text:
|Publication number
|Publication type
|Application number
|Publication date
|Apr 1, 2010
|Priority date
|Jul 30, 1998
|Also published as
|Publication number
|James M. Barton, Kevin Smith, David Chamberlin, Howard Look
|Original Assignee
|Tivo Inc.
|Export Citation
|BiBTeX, EndNote, RefMan
|Patent Citations (5), Referenced by (24), Classifications (104)
|External Links: USPTO, USPTO Assignment, Espacenet
This application claims benefit as a continuation of application Ser. No. 11/182,135 filed Jul. 14, 2005, which claims benefit as a Divisional of application Ser. No. 09/665,921 filed Sep. 20, 2000, which claims benefit of Provisional Application 60/154,713, filed Sep. 20, 1999, and which is also a Continuation-In-Part of application Ser. No. 09/126,071 filed Jul. 30, 1998, issued as U.S. Pat. No. 6,233,389 B1, on May 15, 2001, the entire contents of which are hereby incorporated by reference as if fully set forth herein, under 35 U.S.C. �120.
The invention relates to the processing of multimedia audio and video streams. More particularly, the invention relates to the tagging of multimedia audio and video television streams.
The Video Cassette Recorder (VCR) has changed the lives of television (TV) viewers throughout the world. The VCR has offered viewers the flexibility to time-shift TV programs to match their lifestyles.
The viewer stores TV programs onto magnetic tape using the VCR. The VCR gives the viewer the ability to play, rewind, fast forward and pause the stored program material. These functions enable the viewer to pause the program playback whenever he desires, fast forward through unwanted program material or commercials, and to replay favorite scenes. However, a VCR cannot both capture and play back information at the same time.
Digital Video Recorders (DVR) have recently entered into the marketplace. DVRs allow the viewer to store TV programs on a hard disk. This has freed the viewer from the magnetic tape realm. Viewers can pause, rewind, and fast forward live broadcast programs. However, the functionality of DVRs extends beyond recording programs.
Having programs stored locally in a digital form gives the programmer many more options than were previously available. Advertisements (commercials) can now be dynamically replaced and specifically targeted to the particular viewer based on his or her viewing habits. The commercials can be stored locally on the viewer's DVR and shown at any time.
DVRs allow interactive programming with the viewer. Generally, promotions for future shows are displayed to viewers during the normal broadcast programs. Viewers must then remember the date, time, and channel that the program will be aired on to record or view the program. DVRs allow the viewer to schedule the recording of the program immediately.
The only drawback is that the current generation of DVRs do not have the capability to interact with the viewer at this level. There is no means by which to notify the DVR that commercials are directly tied to a certain program or other advertisements. Further, there is no way to tell the DVR that a commercial can be replaced.
It would be advantageous to provide a closed caption tagging system that gives the content provider the ability to send frame specific data across broadcast media. It would further be advantageous to provide a closed caption tagging system that allows the receiver to dynamically interact with the viewer and configure itself based on program content.
The invention provides a closed caption tagging system. The invention allows content providers to send frame specific data and commands integrated into video and audio television streams across broadcast media. In addition, the invention allows the receiver to dynamically interact with the viewer and configure itself based on video and audio stream content.
A preferred embodiment of the invention provides a mechanism for inserting tags into an audio or video television broadcast stream. Tags are inserted into the broadcast stream prior to or at the time of transmission. The tags contain command and control information that the receiver translates and acts upon.
The receiver receives the broadcast stream and detects and processes the tags within the broadcast stream. The broadcast stream is stored on a storage device that resides on the receiver. Program material from the broadcast stream is played back to the viewer from the storage device.
During the tag processing stage, the receiver performs the appropriate actions in response to the tags. The tags offer a great amount of flexibility to the content provider or system administrator to create a limitless amount of operations.
Tags indicate the start and end points of a program segment. The receiver skips over a program segment during playback in response to the viewer pressing a button on a remote input device. The receiver also automatically skips over program segments depending on the viewer's preferences.
Program segments such as commercials are automatically replaced by the receiver with new program segments. New program segments are selected based on various criteria such as the locale, time of day, program material, viewer's viewing habits, viewer's program preferences, or the viewer's personal information. The new program segments are stored remotely or locally on the receiver.
Menus, icons, and Web pages are displayed to the viewer based on information included in a tag. The viewer interacts with the menu, icon, or Web page through an input device. The receiver performs the actions associated with the menu, icon, or Web page and the viewer's input. If a menu or action requires that the viewer exit from the playback of the program material, then the receiver saves the exit point and returns the viewer back to the same exit point when the viewer has completed the interaction session.
Menus and icons are used to generate leads, generate sales, and schedule the recording of programs. A one-touch recording option is provided. An icon is displayed to the viewer telling the viewer that an advertised program is available for recording at a future time. The viewer presses a single button on an input device causing the receiver to schedule the program for recording. The receiver will also record the current program in the broadcast stream onto the storage device based on information included in a tag.
Tags are used to create indexes in program material. This allows the viewer to jump to particular indexes in a program.
Other aspects and advantages of the invention will become apparent from the following detailed description in combination with the accompanying drawings, illustrating, by way of example, the principles of the invention.
The invention is embodied in a closed caption tagging system. A system according to the invention allows content providers to send frame specific data and commands integrated into video and audio television streams across broadcast media. The invention additionally allows the receiver to dynamically interact with the viewer and configure itself based on video and audio stream content.
A preferred embodiment of the invention provides a tagging and interpretation system that allows a content provider to tag, in a frame specific manner, video and audio streams transmitted over television broadcast media. A receiver interprets and acts upon the tags embedded in the received stream. The tag data allow the receiver to dynamically interact with the viewer through menus and action icons. The tags also provide for the dynamic configuration of the receiver.
Referring to
The Media Switch 102 mediates between a microprocessor CPU 106, hard disk or storage device 105, and memory 104. Input streams are converted to an MPEG stream and sent to the Media Switch 102. The Media Switch 102 buffers the MPEG stream into memory. It then performs two operations if the user is watching real time TV: the stream is sent to the Output Section 103 and it is written simultaneously to the hard disk or storage device 105.
The Output Section 103 takes MPEG streams as input and produces an analog TV signal according to the NTSC, PAL, or other required TV standards. The Output Section 103 contains an MPEG decoder, On-Screen Display (OSD) generator, analog TV encoder and audio logic. The OSD generator allows the program logic to supply images which will be overlayed on top of the resulting analog TV signal. Additionally, the Output Section can modulate information supplied by the program logic onto the VBI of the output signal in a number of standard formats, including NABTS, CC and EDS.
With respect to
Referring to
The Media Switch enables the program logic to associate proper time sequence information with each segment, possibly embedding it directly into the stream. The time sequence information for each segment is called a time stamp. These time stamps are monotonically increasing and start at zero each time the system boots up. This allows the invention to find any particular spot in any particular video segment. For example, if the system needs to read five seconds into an incoming contiguous video stream that is being cached, the system simply has to start reading forward into the stream and look for the appropriate time stamp.
A binary search can be performed on a stored file to index into a stream. Each stream is stored as a sequence of fixed-size segments enabling fast binary searches because of the uniform timestamping. If the user wants to start in the middle of the program, the system performs a binary search of the stored segments until it finds the appropriate spot, obtaining the desired results with a minimal amount of information. If the signal were instead stored as an MPEG stream, it would be necessary to linearly parse the stream from the beginning to find the desired location.
With respect to
The input stream flows through a parser 401. The parser 401 parses the stream looking for MPEG distinguished events indicating the start of video, audio or private data segments. For example, when the parser 401 finds a video event, it directs the stream to the video DMA engine 402. The parser 401 buffers up data and DMAs it into the video buffer 410 through the video DMA engine 402. At the same time, the parser 401 directs an event to the event DMA engine 405 which generates an event into the event buffer 413. When the parser 401 sees an audio event, it redirects the byte stream to the audio DMA engine 403 and generates an event into the event buffer 413. Similarly, when the parser 401 sees a private data event, it directs the byte stream to the private data DMA engine 404 and directs an event to the event buffer 413. The Media Switch notifies the program logic via an interrupt mechanism when events are placed in the event buffer.
Referring to
With respect to
The program logic continues collecting logical segments 603 until it reaches the fixed buffer size. When this occurs, the program logic generates a new buffer, called a Packetized Elementary Stream (PES) 605 buffer containing these logical segments 603 in order, plus ancillary control information. Each logical segment points 604 directly to the circular buffer, e.g., the video buffer 613, filled by the Media Switch 601. This new buffer is then passed to other logic components, which may further process the stream in the buffer in some way, such as presenting it for decoding or writing it to the storage media. Thus, the MPEG data is not copied from one location in memory to another by the processor. This results in a more cost effective design since lower memory bandwidth and processor bandwidth is required.
A unique feature of the MPEG stream transformation into PES buffers is that the data associated with logical segments need not be present in the buffer itself, as presented above. When a PES buffer is written to storage, these logical segments are written to the storage medium in the logical order in which they appear. This has the effect of gathering components of the stream, whether they be in the video, audio or private data circular buffers, into a single linear buffer of stream data on the storage medium. The buffer is read back from the storage medium with a single transfer from the storage media, and the logical segment information is updated to correspond with the actual locations in the buffer 606. Higher level program logic is unaware of this transformation, since it handles only the logical segments, thus stream data is easily managed without requiring that the data ever be copied between locations in DRAM by the CPU.
A unique aspect of the Media Switch is the ability to handle high data rates effectively and inexpensively. It performs the functions of taking video and audio data in, sending video and audio data out, sending video and audio data to disk, and extracting video and audio data from the disk on a low cost platform. Generally, the Media Switch runs asynchronously and autonomously with the microprocessor CPU, using its DMA capabilities to move large quantities of information with minimal intervention by the CPU.
Referring to
The parser 705 parses the input data stream from the MPEG encoder 703, audio encoder 704 and VBI decoder 702, or from the transport demultiplexor in the case of a digital TV stream. The parser 705 detects the beginning of all of the important events in a video or audio stream, the start of all of the frames, the start of sequence headers—all of the pieces of information that the program logic needs to know about in order to both properly play back and perform special effects on the stream, e.g. fast forward, reverse, play, pause, fast/slow play, indexing, and fast/slow reverse play.
The parser 705 places tags 707 into the FIFO 706 when it identifies video or audio segments, or is given private data. The DMA 709 controls when these tags are taken out. The tags 707 and the DMA addresses of the segments are placed into the event queue 708. The frame type information, whether it is a start of a video I-frame, video B-frame, video P-frame, video PES, audio PES, a sequence header, an audio frame, or private data packet, is placed into the event queue 708 along with the offset in the related circular buffer where the piece of information was placed. The program logic operating in the CPU 713 examines events in the circular buffer after it is transferred to the DRAM 714.
The Media Switch 701 has a data bus 711 that connects to the CPU 713 and DRAM 714. An address bus 712 is also shared between the Media Switch 701, CPU 713, and DRAM 714. A hard disk or storage device 710 is connected to one of the ports of the Media Switch 701. The Media Switch 701 outputs streams to an MPEG video decoder 715 and a separate audio decoder 717. The audio decoder 717 signals contain audio cues generated by the system in response to the user's commands on a remote control or other internal events. The decoded audio output from the MPEG decoder is digitally mixed 718 with the separate audio signal. The resulting signals contain video, audio, and on-screen displays and are sent to the TV 716.
The Media Switch 701 takes in 8-bit data and sends it to the disk, while at the same time extracts another stream of data off of the disk and sends it to the MPEG decoder 715. All of the DMA engines described above can be working at the same time. The Media Switch 701 can be implemented in hardware using a Field Programmable Gate Array (FPGA), ASIC, or discrete logic.
Rather than having to parse through an immense data stream looking for the start of where each frame would be, the program logic only has to look at the circular event buffer in DRAM 714 and it can tell where the start of each frame is and the frame type. This approach saves a large amount of CPU power, keeping the real time requirements of the CPU 713 small. The CPU 713 does not have to be very fast at any point in time. The Media Switch 701 gives the CPU 713 as much time as possible to complete tasks. The parsing mechanism 705 and event queue 708 decouple the CPU 713 from parsing the audio, video, and buffers and the real time nature of the streams, which allows for lower costs. It also allows the use of a bus structure in a CPU environment that operates at a much lower clock rate with much cheaper memory than would be required otherwise.
The CPU 713 has the ability to queue up one DMA transfer and can set up the next DMA transfer at its leisure. This gives the CPU 713 large time intervals within which it can service the DMA controller 709. The CPU 713 may respond to a DMA interrupt within a larger time window because of the large latency allowed. MPEG streams, whether extracted from an MPEG2 Transport or encoded from an analog TV signal, are typically encoded using a technique called Variable Bit Rate encoding (VBR). This technique varies the amount of data required to represent a sequence of images by the amount of movement between those images. This technique can greatly reduce the required bandwidth for a signal, however sequences with rapid movement (such as a basketball game) may be encoded with much greater bandwidth requirements. For example, the Hughes DirecTV satellite system encodes signals with anywhere from 1 to 10 Mb/s of required bandwidth, varying from frame to frame. It would be difficult for any computer system to keep up with such rapidly varying data rates without this structure.
With respect to
A source 801 accepts data from encoders, e.g., a digital satellite receiver. It acquires buffers for this data from the downstream transform, packages the data into a buffer, then pushes the buffer down the pipeline as described above. The source object 801 does not know anything about the rest of the system. The sink 803 consumes buffers, taking a buffer from the upstream transform, sending the data to the decoder, and then releasing the buffer for reuse.
There are two types of transforms 802 used: spatial and temporal. Spatial transforms are transforms that perform, for example, an image convolution or compression/decompression on the buffered data that is passing through. Temporal transforms are used when there is no time relation that is expressible between buffers going in and buffers coming out of a system. Such a transform writes the buffer to a file 804 on the storage medium. The buffer is pulled out at a later time, sent down the pipeline, and properly sequenced within the stream.
Referring to
The TmkPipeline class 905, 909, 914 is responsible for flow control through the system. The pipelines point to the next pipeline in the flow from source 901 to sink 903. To pause the pipeline, for example, an event called "pause" is sent to the first object in the pipeline. The event is relayed on to the next object and so on down the pipeline. This all happens asynchronously to the data going through the pipeline. Thus, similar to applications such as telephony, control of the flow of MPEG streams is asynchronous and separate from the streams themselves. This allows for a simple logic design that is at the same time powerful enough to support the features described previously, including pause, rewind, fast forward and others. In addition, this structure allows fast and efficient switching between stream sources, since buffered data can be simply discarded and decoders reset using a single event, after which data from the new stream will pass down the pipeline. Such a capability is needed, for example, when switching the channel being captured by the input section, or when switching between a live signal from the input section and a stored stream.
The source object 901 is a TmkSource 906 and the transform object 902 is a TmkXform 910. These are intermediate classes that define standard behaviors for the classes in the pipeline. Conceptually, they handshake buffers down the pipeline. The source object 901 takes data out of a physical data source, such as the Media Switch, and places it into a PES buffer. To obtain the buffer, the source object 901 asks the down stream object in his pipeline for a buffer (allocEmptyBuf). The source object 901 is blocked until there is sufficient memory. This means that the pipeline is self-regulating; it has automatic flow control. When the source object 901 has filled up the buffer, it hands it back to the transform 902 through the pushFullBuf function.
The sink 903 is flow controlled as well. It calls nextFullBuf which tells the transform 902 that it is ready for the next filled buffer. This operation can block the sink 903 until a buffer is ready. When the sink 903 is finished with a buffer (i.e., it has consumed the data in the buffer) it calls releaseEmptyBuf. ReleaseEmptyBuf gives the buffer back to the transform 902. The transform 902 can then hand that buffer, for example, back to the source object 901 to fill up again. In addition to the automatic flow-control benefit of this method, it also provides for limiting the amount of memory dedicated to buffers by allowing enforcement of a fixed allocation of buffers by a transform. This is an important feature in achieving a cost-effective limited DRAM environment.
The MediaSwitch class 909 calls the allocEmptyBuf method of the TmkClipCache 912 object and receives a PES buffer from it. It then goes out to the circular buffers in the Media Switch hardware and generates PES buffers. The MediaSwitch class 909 fills the buffer up and pushes it back to the TmkClipCache 912 object.
The TmkClipCache 912 maintains a cache file 918 on a storage medium. It also maintains two pointers into this cache: a push pointer 919 that shows where the next buffer coming from the source 901 is inserted; and a current pointer 920 which points to the current buffer used.
The buffer that is pointed to by the current pointer is handed to the Vela decoder class 916. The Vela decoder class 916 talks to the decoder 921 in the hardware. The decoder 921 produces a decoded TV signal that is subsequently encoded into an analog TV signal in NTSC, PAL or other analog format. When the Vela decoder class 916 is finished with the buffer it calls releaseEmptyBuf.
The structure of the classes makes the system easy to test and debug. Each level can be tested separately to make sure it performs in the appropriate manner, and the classes may be gradually aggregated to achieve the desired functionality while retaining the ability to effectively test each object.
The control object 917 accepts commands from the user and sends events into the pipeline to control what the pipeline is doing. For example, if the user has a remote control and is watching TV, the user presses pause and the control object 917 sends an event to the sink 903, that tells it pause. The sink 903 stops asking for new buffers. The current pointer 920 stays where it is at. The sink 903 starts taking buffers out again when it receives another event that tells it to play. The system is in perfect synchronization; it starts from the frame that it stopped at.
The remote control may also have a fast forward key. When the fast forward key is pressed, the control object 917 sends an event to the transform 902, that tells it to move forward two seconds. The transform 902 finds that the two second time span requires it to move forward three buffers. It then issues a reset event to the downstream pipeline, so that any queued data or state that may be present in the hardware decoders is flushed. This is a critical step, since the structure of MPEG streams requires maintenance of state across multiple frames of data, and that state will be rendered invalid by repositioning the pointer. It then moves the current pointer 920 forward three buffers. The next time the sink 903 calls nextFullBuf it gets the new current buffer. The same method works for fast reverse in that the transform 902 moves the current pointer 920 backwards.
A system clock reference resides in the decoder. The system clock reference is sped up for fast play or slowed down for slow play. The sink simply asks for full buffers faster or slower, depending on the clock speed.
With respect to
Referring to
An important feature of this apparatus is the ease with which it can selectively capture portions of an incoming signal under the control of program logic. Based on information such as the current time, or perhaps a specific time span, or perhaps via a remote control button press by the viewer, a TmkClipWriter 1106 may be switched on to record a portion of the signal, and switched off at some later time. This switching is typically caused by sending a "switch" event to the PushSwitch 1102 object.
An additional method for triggering selective capture is through information modulated into the VBI or placed into an MPEG private data channel. Data decoded from the VBI or private data channel is passed to the program logic. The program logic examines this data to determine if the data indicates that capture of the TV signal into which it was modulated should begin. Similarly, this information may also indicate when recording should end, or another data item may be modulated into the signal indicating when the capture should end. The starting and ending indicators may be explicitly modulated into the signal or other information that is placed into the signal in a standard fashion may be used to encode this information.
With respect to
During stream capture, each word is looked up in a table 1206 which indicates the action to take on recognizing that word. This action may simply change the state of the recognizer state machine 1207, or may cause the state machine 1207 to issue an action request, such as "start capture", "stop capture", "phrase seen", or other similar requests. Indeed, a recognized word or phrase may cause the pipeline to be switched; for example, to overlay a different audio track if undesirable language is used in the program.
Note that the parsing state table 1206 and recognizer state machine 1207 may be modified or changed at any time. For example, a different table and state machine may be provided for each input channel. Alternatively, these elements may be switched depending on the time of day, or because of other events.
Referring to
An ActionClip class provides for sequencing a number of different stored signals in a predictable and controllable manner, possibly with the added control of viewer selection via a remote control. Thus, it appears as a derivative of a TmkXform object that accepts a "switch" event for switching to the next stored signal.
This allows the program logic or user to create custom sequences of video output. Any number of video segments can be lined up and combined as if the program logic or user were using a broadcast studio video mixer. TmkClipReaders 1108, 1109, 1110 are allocated and each is hooked into the PullSwitch 1104. The PullSwitch 1104 switches between the TmkClipReaders 1108, 1109, 1110 to combine video and audio clips. Flow control is automatic because of the way the pipeline is constructed. The Push and Pull Switches are the same as video switches in a broadcast studio.
The derived class and resulting objects described here may be combined in an arbitrary way to create a number of different useful configurations for storing, retrieving, switching and viewing of TV streams. For example, if multiple input and output sections are available, one input is viewed while another is stored, and a picture-in-picture window generated by the second output is used to preview previously stored streams. Such configurations represent a unique and novel application of software transformations to achieve the functionality expected of expensive, sophisticated hardware solutions within a single cost-effective device.
With respect to
The VCR 1307 output can also be routed back into the Input Module 1301. In this configuration the VCR acts as a backup system for the Media Switch 1302. Any overflow storage or lower priority programming is sent to the VCR 1307 for later retrieval.
The Input Module 1301 can decode and pass to the remainder of the system information encoded on the Vertical Blanking Interval (VBI). The Output Module 1303 can encode into the output VBI data provided by the remainder of the system. The program logic may arrange to encode identifying information of various kinds into the output signal, which will be recorded onto tape using the VCR 1307. Playing this tape back into the input allows the program logic to read back this identifying information, such that the TV signal recorded on the tape is properly handled. For example, a particular program may be recorded to tape along with information about when it was recorded, the source network, etc. When this program is played back into the Input Module, this information can be used to control storage of the signal, presentation to the viewer, etc.
Such a mechanism may be used to introduce various data items to the program logic which are not properly conceived of as television signals. For instance, software updates or other data may be passed to the system. The program logic receiving this data from the television stream may impose controls on how the data is handled, such as requiring certain authentication sequences and/or decrypting the embedded information according to some previously acquired key. Such a method works for normal broadcast signals as well, leading to an efficient means of providing non-TV control information and data to the program logic.
Additionally, although a VCR is specifically mentioned above, any multimedia recording device (e.g., a Digital Video Disk-Random Access Memory (DVD-RAM) recorder) is easily substituted in its place.
Although the invention is described herein with reference to the preferred embodiment, other applications may be substituted for those set forth herein without departing from the spirit and scope of the present invention. For example, the invention can be used in the detection of gambling casino crime. The input section of the invention is connected to the casino's video surveillance system. Recorded video is cached and simultaneously output to external VCRs. The user can switch to any video feed and examine (i.e., rewind, play, slow play, fast forward, etc.) a specific segment of the recorded video while the external VCRs are being loaded with the real-time input video.
Referring again to
The invention provides a mechanism called the TiVo Video Tag Authoring (TVTAG) system for inserting tags (TiVo tags) into a video stream prior to broadcast. With respect to
The TVTAG software 1406, in its most basic implementation, is responsible for controlling the VBI Insertion device 1402. The TVTAG software 1406 communicates with the VBI insertion device 1402 by means of standard computer interfaces and device control code protocols. When an operator observing the video monitor 1405 determines that the desired tag insertion point has been reached, he presses a key, causing the TiVo tag data object to be generated, transmitted to the VBI insertion device 1402, and incorporated in the video stream for transmission 1404 or storage 1403.
The TVTAG software has the additional capability of controlling the video input source 1401 and the video output storage device 1403. The operator selects the particular video 1602 and has the ability to pause the video input stream to facilitate overlaying a graphic element 1702 on the monitor, and positioning it by means of a pointing device, such as a mouse. The positioning of the graphic element 1702 is also accomplished through the operator interface 1601. The operator inputs the position of the graphic using the X position 1605 and the Y position 1604.
The graphic element and positioning information are then incorporated in the TiVo tag data object (discussed below) and the time-code or frame of the video noted. When the operator is satisfied, playback and record are resumed. The tag is then issued through the insertion device with the highest degree of accuracy.
Referring to
Another embodiment of the invention integrates the software with popular non-linear video editing systems as a "plug-in", thereby allowing the TiVo tag data objects to be inserted during the video production process. In this embodiment, the non-linear editing system serves as the source and storage system controller and also provides graphic placement facilities, allowing frame-accurate placement of the TiVo tag data object.
With respect to
The invention provides an architecture that supports taking various actions based on tags in the video stream. Some examples of the flexibility that TiVo tags offer are:
There are three options at this point:
The program segment to be played back is selected based, for example, on locale, the time of day, program material, or on the preference engine (described in application Ser. No. 09/422,121 owned by the Applicant). Using the preference engine, the appropriate program segment from local or server storage 1906 is selected according to the viewer's profile. The profile contains the viewer's viewing habits, program preferences, and other personal information. The stored program segments 1906 have program objects describing their features as well, which are searched for best match versus the preference vector.
Clearly, there must be a rotation mechanism among commercials to avoid ad burnout. The preference vector can be further biased by generating an error vector versus the program data for the currently viewed program, and using this error vector to bias the match against the commercial inventory on disk 1906. For example, if the viewer is watching a soap opera and the viewer's preference vector is oriented towards sports shows, then the invention will select the beer commercial in favor of the diaper commercial.
A tag can also be used to make conditional choices. The tag contains a preference weighting of its own. In this case, the preference weighting is compared to the preference vector and a high correlation causes the invention to leave the commercial alone. A low correlation invokes the method above.
NOTE: In all of these cases the system 1905 has more than enough time to make a decision. The structure of the pipeline routinely buffers � second of video, giving lots of time between input and output to change the stream. If more time is needed, add buffering to the pipeline. If playing back off disk, then the system creates the same time delay by reading ahead in the stream.
Also note that commercials can also be detected using the method described in application Ser. No. 09/187,967 entitled "Analog Video Tagging and Encoding System," also owned by the Applicant. The same type of substitution described above can be used when tags described in the aforementioned application are used.
With respect to
Depending on the viewer's preset preferences, the system 1905 itself can skip commercials on live or prerecorded programs stored in memory 1906. Skipping commercials on live video just requires a larger amount of buffering in the pipeline as described above. Allowing the system to skip commercials on recorded programs presents the viewer with a continuous showing of the program without any commercial interruptions.
Tags are added to program material to act as indexes. The viewer, for example, can jump to each index within the program by pressing the jump button 2205 on the remote control 2201.
Tags are also used for system functions. As noted above, the system locally stores program material for its own use. The system 1905 must somehow receive the program material. This is done by tuning in to a particular channel at off hours. The system 1905 searches for the tag in the stream 1901 that tells it to start recording. The recording is comprised of a number of program segments delimited by tags 1903, 1904 that identify the content and possibly a preference vector. A tag at the end of the stream tells the system 1905 to stop recording. The program segments are stored locally 1906 and indexed for later use as described above.
The invention incorporates the following design points:
Referring to
The source object 2001 is responsible for inserting tags into the PesBuf stream it produces. This is assuming there are separate source objects for analog input and digital TV sources.
There are a number of different ways that tags may appear in an analog stream:
Within the EDS field.
Implicitly using the CC field.
Modulated onto the VBI, perhaps using the ATVEF specification.
Time Based
In a digital TV stream, or after conversion to MPEG from analog:
In-band, using TiVo Tagging Technology.
MPEG2 Private data channel.
MPEG2 stream features (frame boundaries, etc.).
Time-based tags.
The source object 2001 is not responsible for parsing the tags and taking any actions. Instead, the source object 2001 should solely be responsible for recognizing potential tags in the stream and adding them to the PesBuf stream.
Conceptually, all tags may be broken up into two broad groups: those that require action upon reception, such as recording a program; and those that require action upon presentation, i.e., when the program is viewed.
Tags that require action upon reception are handled as follows: a new Reception Tag Mechanism subclass 2003 of the TmkPushSwitch class 2002 is created. As input streams pass through this class 2003 between the source object 2001 and the program cache transform 2013, the class 2003 recognizes reception tags and takes appropriate actions.
Reception tags are generally handled once and then disabled.
Tags that require actions upon presentation are handled as follows: a new Presentation Tag Mechanism subclass 2007 of the TmkPullSwitch class 2008 is created. As output streams pass through this class 2007 between the program cache transform 2013 and the sink object 2011, the class 2007 recognizes presentation tags and takes appropriate actions.
Tag reception handling is only permitted if there is a TagReceptionPolicy object 2009 present for the current channel. Tag presentation handling is only permitted if there is a TagPresentationPolicy object 2010 for the source channel.
The TagPolicy objects describe which tags are to be recognized, and what actions are allowed.
When an input channel change occurs, the reception tag object is notified, and it fetches the TagReceptionPolicy object 2009 (if any) for that channel, and obeys the defined policy.
When an output channel change occurs, the presentation tag object is notified, and it fetches the TagPresentationPolicy object 2010 (if any) for that channel, and obeys the defined policy.
The reception of tags may be logged into the database. This only occurs if a TagReceptionPolicy object 2009 is present, and the tag logging attribute is set. As an example, the logging attribute might be set, but no reception actions allowed to be performed. This allows passive logging of activity in the input stream.
It is important to support updates of information about the current showing. The following strategy is proposed:
Tags are extremely flexible in that, once the TagPolicy object has been used to identify a valid tag, standardized abstract tags are interpreted by the Tag Interpreter 2005 and operational tags are executed by the TiVo Tag State Machine 2006. Interpreted tags trigger a predefined set of actions. Each set of actions have been preprogrammed into the system.
State machine tags are operational tags that do not carry executable code, but perform program steps. This allows the tag originator to combine these tags to perform customized actions on the TiVo system. State machine tags can be used to achieve the same results as an interpreted tag, but have the flexibility to dynamically change the set of actions performed.
The set of available abstract tags is defined in a table called the Tag/Action table. This table is typically stored in a database object. There are a small number of abstract actions defined. These actions fall into three general categories:
Viewer visible actions (may include interaction).
Meta-information about the stream (channel, time, duration, etc.).
TiVo control tags.
Tags which cause a change to the on-disk database, or cause implicit recording, must be validated. This is accomplished through control tags.
This tag indicates that the viewer is to be presented with a choice. The data associated with the tag indicates what the choice is, and other interesting data, such as presentation style. A menu has an associated inactivity timeout.
The idea of the menu tag is that the viewer is offered a choice. If the viewer isn't present, or is uninterested, the menu should disappear quickly. The menu policy may or may not be to pause the current program. The presentation of the menu does not have to be a list.
Push Alternate Program Conditional
This tag indicates that some alternate program should be played if some condition is true. The condition is analyzed by the policy module. It may always be true.
Pop Alternate Program Conditional
This tag reverts to the previous program. If a program ends, then the alternate program stack is popped automatically. All alternate programs are popped if the channel is changed or the viewer enters the TiVo Central menu area.
Alternate programs are a way of inserting arbitrary sequences into the viewed stream. The conditional data is not evaluated at the top level. Instead, the policy module must examine this data to make choices. This, for example, can be used to create "telescoping" ads.
Show Indicator Conditional
This tag causes an indication to be drawn on the screen. Indicators are named, and the set of active indicators may be queried at any time. The tag or tag policy may indicate a timeout value at which time the indicator is derived.
Clear Indicator Conditional
This tag causes an active indication to be removed. All indicators are cleared if the channel is changed or the viewer enters the TiVo Central menu area.
Indicators are another way to offer a choice to the viewer without interrupting program flow. They may also be used to indicate conditions in the stream that may be of interest. For example, "Active Promo" is created by providing a program object ID as part of the tag data, allowing that program to be selected. If the viewer hits a particular key while the indicator is up, then the program is scheduled for recording.
Current Showing Information
This tag is a general bucket for information about the current showing. Each tag typically communicates one piece of information, such as the start time, end time, duration, etc. This tag can be used to "lengthen" a recording of an event.
Future Showing Information
This tag is similar to the above, but contains information about a future showing. There are two circumstances of interest:
Authorize Modification
This tag is generally encrypted with the current month's security key. The lifetime of the authorization is set by policy, probably to an hour or two. Thus, the tag needs to be continually rebroadcast if modifications to local TiVo system states are permitted.
The idea of this tag is to avoid malicious (or accidental) attacks using inherently insecure tag mechanisms such as EDS. If a network provides EDS information, we first want to ensure that their tags are accurate and that attacks on the tag delivery system are unlikely. Then, we would work with that network to provide an authorization system that carouseled authorization tags on just that network. Unauthorized tags should never be inserted into the PES stream by the source object.
Record Current Conditional
This tag causes the current program to be saved to disk starting from this point. The recording will cease when the current program ends.
Stop Recording Current Conditional
This tag ceases recording of the current program.
Record Future Conditional
A showing object ID is provided (perhaps just sent down in a Future Showing tag). The program is scheduled for recording at a background priority lower than explicit viewer selections.
Cancel Record Future Conditional
A showing object ID is provided. If a recording was scheduled by a previous tag for that object, then the recording is canceled.
These tags, and the Future Showing tag, may be inserted in an encrypted, secure format. The source object will only insert these tags in the PES stream if they are properly validated.
One of the purposes of these tags is to automatically trigger recording of TiVo inventory, such as loopsets, advertisements, interstitials, etc. A later download would cause this inventory to be "installed" and available.
Save File Conditional
This tag is used to pass data through the stream to be stored to disk. For instance, broadcast Web pages would be passed through this mechanism.
Save Object Conditional
This tag is used to pass an object through the stream to be stored to disk. Storing the object follows standard object updating rules.
The following is an example of an implementation using presentation tags inserted into the Closed Captioning (CC) part of a stream. The CC part of the stream was chosen because it is preserved when a signal is transmitted and digitized and decoded before it reaches the user's receiver. There are no guarantees on the rest of the VBI signal. Many of the satellite systems strip out everything except the closed captioning when encoding into MPEG-2.
There is a severe bandwidth limitation on the CC stream. The data rate for the CC stream is two 7-bit bytes every video frame. Furthermore, to avoid collision with the control codes, the data must start at 0x20, thus effectively limiting it to about 6.5-bit bytes (truncate to 6-bit bytes for simplicity). Therefore, the bandwidth is roughly 360 bits/second. This rate gets further reduced if the channel is shared with real CC data. In addition, extra control codes need to be sent down to prevent CC-enabled televisions from attempting to display the TiVo tags as CC text.
This section describes how the tags are laid out in the closed captioning stream. It assumes a general familiarity with the closed captioning specification, though this is not crucial.
A TiVo Tag placed in a stream should not affect the display on a closed captioning enabled television. This is achieved by first sending down a "resume caption loading" command (twice for fault tolerance), followed by a string of characters that describes the tag followed by an "erase nondisplayed memory" command (twice for fault tolerance). What this does is to load text into offscreen memory, and then clear the memory. A regular TV with closed captioning enabled will not display this text (as per EIA-701 standard).
This works as long as the closed captioning decoder is not in "roll-up" or "scrolling" mode. In this mode, a "resume caption loading" command would cause the text to be erased. To solve this problem, TiVo Tags will be accepted and recognized even if they are sent to the second closed captioning channel. This way, even if closed captioning channel 1 is set up with scrolling text, we can still send the tag through closed captioning channel 2.
The text sent with a TiVo Tag consists of the letters "Tt", followed by a single character indicating the length of the tag, followed by the tag contents, followed by a CRC for the tag contents. The letters "Tt" are sufficiently unique that it is unlikely to encounter these in normal CC data. Furthermore, normal CC data always starts with a position control code to indicate where on the screen the text is displayed. Since we are not displaying onscreen, there is no need for this positioning data. Therefore, the likelihood of encountering a "Tt" immediately after a "resume caption loading" control code is sufficiently rare that we can almost guarantee that this combination is a TiVo tag (though the implementation still will not count on this to be true).
The single character indicating the length of the tag is computed by adding the tag length to 0x20. If the length is 3 characters, for example, then the length character used is 0x23 ('#'). So as not to limit the implementation to a length of 95 (since there are only 96 characters in the character set), the maximum length is defined as 63. If longer tags are needed, then an interpretation for the other 32 possible values for the length character can be added.
The possible values for the tag itself are defined in the Tag Types section below.
The CRC is the 16 bit CRC-CCITT (i.e., polynomial=x̂16+x̂12+x̂5+1). It is placed in the stream as three separate characters. The first character is computed by adding 0x20 to the most significant six bits of the CRC. The next character is computed by adding 0x20 to the next six bits of the CRC. The last character is computed by adding 0x20 to the last four bits of the CRC.
This section details an example of a TiVo Tag. Note that every tag sequence begins with at least one byte indicating the tag type.
iPreview Tag
With respect to
The screen location for the iPreview alert is a fraction of the screen resolution in width and height. The X coordinate uses 9 bits to divide the width, so the final coordinate is given as: X=(x_resolution/511)*xval. If the xval is given as 10, on a 720�486 screen (using CCIR656 resolution), the X coordinate would be 14. The Y coordinate uses 8 bits to divide the height, so the final coordinate is given as: Y=(y_resolution/255)*yval. The X,Y coordinates indicate the location of the upper-left corner of the bug graphic.
If the value of X and Y are set to the maximum possible values (i.e., x=511, y=255), then this indicates that the author is giving the system the job of determining its position. The system will place the bug at a predetermined default position. The rationale for using the max values to indicate the default position is that it is never expected that a "real" position will be set to these values since that would put the entire bug graphic offscreen.
The size field is a four bit number that indicates what size any alert graphic should be. The 16 possible values of this field correspond to predefined graphic sizes that the settop boxes should be prepared to provide.
The timeout is a ten bit number indicating the number of frames left in the promotion. This puts a 34 second lifetime limit on this tag. If a promotion is longer, then the tag needs to be repeated. Note that the timeout was "artificially limited" to 10 bits to limit exposure to errors. This is to limit the effect it will have on subsequent commercials if an author puts a malformed timeout in the tag.
The version is a versioning number used to identify the promo itself. Instead of bit-packing this number (and thus limiting it to 6 bits), the full closed captioning character set is used, which results in 96 possibilities instead of 64 (2̂6). The version number thus needs to be within the range 0-95.
The reserved character is currently unused. This character needs to exist so that the control codes end up properly aligned on the 2-byte boundaries.
The first character of an iPreview tag is always "i".
All of the data fields are packed together on a bit boundary, and then broken into six bit values which are converted into characters (by adding 0x20) and transmitted. The order of the fields are as follows:
32 bits: program ID
9 bits: X location
8 bits: Y location
4 bits: graphic size
10 bits: timeout
1 character: version
1 character: reserved
The data fields total 66 bits which requires 11 characters to send+1 character for version and 1 character for reserved. The exact contents of each character are:
1) 0x20+ID[31:26]
2) 0x20+ID[25:20]
3) 0x20+ID[19:14]
4) 0x20+ID[13:8]
5) 0x20+ID[7:2]
6) 0x20+ID[1:0] X[8:5]
7) 0x20+X[4:0] Y[7]
8) 0x20+Y[6:1]
9) 0x20+Y[0] size[3:0]
10) 0x20+Y[0] size[3:0] timeout[9]
11) 0x20+timeout[8:3]
12) 0x20+timeout[2:0]
13) 0x20+version
14) reserved
Including the first character "i", the length of the iPreview tag is 14 characters+3 CRC characters. With the tag header (3 characters), this makes a total length of 20 characters which can be sent down over 10 frames. Adding another 4 frames for sending "resume caption loading" twice and "erase nondisplayed memory" twice means an iPreview tag will take 14 frames (0.47 seconds) to broadcast.
A complete iPreview tag consists of:
Currently, the parity bit is being used as a parity bit. However, since a CRC is already included, there is no need for the error-checking capabilities of the parity bit. Taking this a step further, the parity bit can be used in a clever way. Since a closed captioning receiver should ignore any characters with an incorrect parity bit, a better use of the limited bandwidth CC channel can be had by intentionally using the wrong parity. This allows the elimination of the resume caption loading and erase nondisplayed memory characters, as well as making it easier to "intersperse" TiVo tags among existing CC data.
iPreview Viewer Interaction
Referring to
The Tag Interpreter 2005 waits for the user input. Depending on the viewer's preset preferences, the press of the select button 2204 results in the program automatically scheduled by the Tag Interpreter 2005 for recording, resulting in a one-touch record, or the viewer is presented with a record options screen 2101. The viewer highlights the record menu item 2102 and presses the select button 2204 to have the program scheduled for recording.
The tag itself has been interpreted by the Tag Interpreter 2005. The Tag Interpreter 2005 waits for any viewer input through the remote control 2201. Once the viewer presses the select button 2204, the Tag Interpreter 2005 tells the TiVo system to schedule a recording of the program described by the 32 bit program ID in the iPreview tag.
With respect to
The process of generating a lead occurs when, for example, a car ad is being played. An iPreview icon appears 2301 on the screen and the viewer knows that he can press the select button 2204 to enter an interactive menu.
A menu screen 2302 is displayed by the Tag Interpreter 2005 giving the user the choice to get more information 2303 or see a video of the car 2304. The viewer can always exit by pressing the live TV button 2202. If the viewer selects get more information 2303 with the up and down arrow button 2203 select button 2204, then the viewer's information is sent to the manufacturer 2305 by the Tag Interpreter 2005, thereby generating a lead. The viewer returns to the program by pressing the select button 2204.
Generating a sale occurs when a product, e.g., a music album ad, is advertised. The iPreview icon 2301 appears on the screen. The viewer presses the select button 2204 and a menu screen 2307 is displayed by the Tag Interpreter 2005.
The menu screen 2307 gives the viewer the choice to buy the product 2308 or to exit 2309. If the viewer selects yes 2308 to buy the product, then the Tag Interpreter 2005 sends the order to the manufacturer with the viewer's purchase information 2310. If this were a music album ad, the viewer may also be presented with a selection to view a music video by the artist.
Whenever the system returns the viewer back to the program, it returns to the exact point that the viewer had originally exited from. This gives the viewer a sense of continuity.
The concept of redirection is easily expanded to the Internet. The iPreview icon will appear as described above. When the viewer presses the select button 2204 on the remote control 2201, a Web page is then displayed to the viewer. The viewer then interacts with the Web page and when done, the system returns the viewer back to the program that he was watching at the exact point from which the viewer had exited.
Using the preference engine as noted above, the information shown to the viewer during a lead or sale generation is easily geared toward the specific viewer. The viewer's viewing habits, program preferences, and personal information are used to select the menus, choices, and screens presented to the viewer. Each menu, choice and screen has an associated program object that is compared to the viewer's preference vector.
For example, if a viewer is male and the promo is for Chevrolet, then when the viewer presses the select button, a still of a truck is displayed. If the viewer were female, then a still of a convertible would be displayed.
Note that the Tag State Machine 2006 described below is fully capable of performing the same steps as the Tag Interpreter 2005 in the above examples.
Referring again to
A simple example is the creation of an active promo. As demonstrated above, an active promo is where a promotion for an upcoming show is broadcast and the viewer is immediately given the option of having the TiVo system record that program when it actually is broadcast.
Hidden complexities underlie this simple example: some indicator must be generated to alert the viewer to the opportunity; the indicator must be brought into view or removed with precision; accurate identification of the program in question must be provided; and the program within which the active promo appears may be viewed at a very different time then when it was broadcast.
Creation and management of the TiVo tags is also challenging. It is important to cause as little change as possible to existing broadcast practices and techniques. This means keeping the mechanism as simple as possible for both ease of integration into the broadcast stream and for robust and reliable operation.
As previously noted, it is assumed that the bandwidth available for sending tags is constrained. For example, the VBI has limited space available which is under heavy competition. Even in digital television signals, the amount of out-of-band data sent will be small since most consumers of the signal will be mainly focused on television programming options.
A tag is then a simple object of only a few bytes in size. More complex actions are built by sending multiple tags in sequence.
The nature of broadcast delivery implies that tags will get lost due to signal problems, sunspots, etc. The TSM incorporates a mechanism for handling lost tags, and insuring that no unexpected actions are taken due to lost tags.
In general, viewer-visible tag actions are relevant only to the channel on which they are received; it is assumed that tag state is discarded after a channel change.
Physical tags are translated into abstract tags by the source object 1901 receiving the physical tag. Tags are not "active agents" in that they carry no executable code; functioning the TSM may result in viewer-visible artifacts and changes, but the basic operation of the TiVo receiver system will remain unaffected by the sequence of tags. If tags could contain executable code, such as the Java byte streams contemplated by the ATVEF, the integrity of the TiVo viewing experience might be compromised by poorly written or malicious software.
All tag actions are governed by a matching policy object matched to the current channel. Any or all actions may be enabled or disabled by this object; the absence of a policy object suppresses all tag actions.
All abstract tags have a common infrastructure. The following components are present in any abstract tag:
Tag Type (1 Byte)
The type 0 is disallowed. The type 255 indicates an "extension" tag, should more than 254 tag values be required at some future time.
Tag Sequence (1 Byte)
This unsigned field is incremented for each tag that is part of a sequence. Tags which are not part of a sequence must have this field set to zero. A tag sequence of one indicates the start of a new sequence; a sequence may be any length conceptually, but it will be composed of segments of no more than 255 tags in order.
Each tag type has an implicit sequence length (which may be zero); the sequence number is introduced to handle dropouts or other forms of tag loss in the stream. In general, if a sequence error occurs, the entire tag sequence is discarded and the state machine reset.
Tags should be checksummed in the physical domain. If the checksum doesn't match, the tag is discarded by the source object. This will result in a sequence error and reset of the state machine.
Tag Timestamp (8 Bytes)
This is the synchronous time within the TV stream at which the tag was recognized. This time is synchronous to all other presentation times generated by the TiVo Receiver. This component is never sent, but is generated by the receiver itself.
Tag Data Length (2 Bytes)
This is the length of any data associated with the tag. The interpretation of this data is based on the tag type. The physical domain translator should perform some minimal error checking on the data.
The TSM is part of the Tag Presentation Mechanism, which is in-line with video playback.
Conceptually, the TSM manages an abstract stack of integer values with at least 32 bits of precision, or sufficient size to hold an object ID. The object ID is abstract, and may or may not indicate a real object on the TiVo Receiver—it may otherwise need to be mapped to the correct object. The stack is limited in size to 255 entries to limit denial-of-service attacks.
The TSM also manages a pool of variables. Variables are named with a 2-byte integer. The variable name 0 is reserved. "User" variables may be manipulated by tag sequences; such variables lie between 1 and 2̂15−1. "System" variables are maintained by the TSM, and contain values about the current TiVo Receiver, such as: the current program object ID; the TSM revision; and other useful information. These variables have names between 2̂15 and 2̂16−1. The number of user variables may be limited within a TSM; a TSM variable indicates what this limit is.
The tag data is a sequence of TSM commands. Execution of these commands begins when the tag is recognized and allowed. TSM commands are byte oriented and certain commands may have additional bytes to support their function.
The available TSM commands may be broken down into several classes:
push_byte—push the byte following the command onto the stack.
push_short—push the short following the command onto the stack.
push_word—push the word following the command onto the stack.
push_var—push the variable named in the 16-bit quantity following the command.
pop_var—pop into the variable named in the 16-bit quantity following the command.
copy_var—copy into the variable named in the 16-bit quantity following the command from the stack.
swap—swap the top two stack values.
pop—toss the top stack value.
add_byte—add the signed byte following the command to the top of stack.
add_short—add the signed short following the command to the top of stack.
add_word—add the signed word following the command to the top of stack.
and—and the top and next stack entries together, pop the stack and push the new value.
or—or the top and next stack entries together, pop the stack and push the new value.
brif_zero—branch to the signed 16-bit offset following the command if the top of stack is zero.
brif_nz—branch to the signed 16-bit offset following the command if the top of stack is not zero.
brif_gt—branch to the signed 16-bit offset following the command if the top of stack is greater than the next stack entry.
brif_ge—branch to the signed 16-bit offset following the command if the top of stack is greater than or equal to the next stack entry.
brif_le—branch to the signed 16-bit offset following the command if the top of stack is less than or equal to the next stack entry.
brif_lt—branch to the signed 16-bit offset following the command if the top of stack is less than the next stack entry.
brif_set—branch to the signed 16-bit offset following the command if there are bits set when the top and next stack entries are ANDed together.
exec—execute tag action on the object ID named on top of stack.
fin—terminate tag taking no action.
32768—(TAG)—value of current tag.
32769 (YEAR)—current year (since 0).
32770 (MONTH)—current month (1-12).
32771 (DAY)—day of month (1-31).
32772 (WDAY)—day of week (1-7, starts Sunday).
32773 (HOUR)—hour of the day (0-23).
32774 (MIN)—minute of the hour (0-59).
32775 (SEC)—seconds of the minute (0-59).
32800 (SWREL)—software release (in x.x.x notation in bytes).
32801 (NTWRK)—object ID of currently tuned network.
32802 (PRGRM)—object ID of currently tuned program.
32803 (PSTATE)—current state of output pipeline:
0—normal playback
10—rewind speed 1
11—rewind speed 2
. . .
20—ff speed 1
21—ff speed 2
32900 (IND)—indicator number to display or take down.
32901 (PDURING)—state of the pipeline while tag is executing.
32902 (ALTP)—alternate program object ID to push on play stack.
32903 (SELOBJ)—program object ID to record if indicator selected.
33000 (MENU1)—string object number for menu item 1.
33001 (MENU2)—string object number for menu item 2.
. . .
33009 (MENU10)—string object number for menu item 9.
33100 (PICT1)—picture object number for menu item 1.
33101 (PICT2)—picture object number for menu item 2.
. . .
33109 (PICT10)—picture object number for menu item 10.
33200 (MSELOBJ1)—program object ID to record if menu item selected.
33201 (MSELOBJ2)—program object ID to record if menu item selected.
. . .
33209 (MSELOBJ10)—program object ID to record if menu item selected.
Push Alternate Program
Pop Alternate Program (auto-pop at end of program)
Raise Indicator
Lower Indicator
Execution policy is determined by the TSM. Some suggestions are:
Menus are laid out as per standard TiVo menu guidelines. In general, menus appear over live video. Selection of an item typically invokes the record dialog. It may be best to pause the pipeline during the menu operation.
With respect to
Alternate Programs
Alternate programs should appear as part of the video stream, and have full ff/rew controls. The skip to live button 2202 pops the alternate program stack to empty first.
Although the closed caption stream is specifically mentioned above, other transport methods can be used such as the EDS fields, VBI, MPEG2 private data channel, etc.
Although the invention is described herein with reference to the preferred embodiment, one skilled in the art will readily appreciate that other applications may be substituted for those set forth herein without departing from the spirit and scope of the present invention. Accordingly, the invention should only be limited by the Claims included below.
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|U.S. Classification
|International Classification
|Cooperative Classification
|European Classification


text:
Hurst 373-4529 - Hurst Competition/Plus Installation Kits
Competition/Plus Shifters - Installation Kits
Competition/Plus Shifter; Installation Kit
These Hurst Competition Plus Shifter installation kits are designed to go with each of the shifters available for a specific application. They are vehicle, transmission, and shifter-specific. Get the Hurst Competition Plus Shifter installation kit you need to complete your shifter installation.

subset: commoncrawl


text:
The 'Power Rangers Super Samurai' Christmas Special Is The Best Clip Show Ever
I haven't actually watched an episode of Power Rangers in around two decades. If there's one thing I love at this time of year, however, it's a Christmas Special, so when I saw that Power Rangers Super Samurai: Stuck On Christmas had been added to Netflix Instant, I was delighted. I settled in with a nice tall glass of


text:
BBD Editor: Dan Hope
At 4-7 and trailing in the AFC East by four games, making the playoffs isn't supposed to be considered realistic for the Buffalo Bills.
While there have been 10 NFL playoff teams since 2007 with seven or more losses, only five of those teams have been wild card teams. And there is certainly a big difference between teams who finished the year 9-7 or even 8-8, and expecting the Bills, who have not won consecutive games yet this season, to put together a significant winning streak to secure a playoff berth.
Coming out of Buffalo's Week 12 bye, however, the possibility should not be ruled out. And that isn't just blind optimism from a Bills perspective. In the American Football Conference, in which only five teams have winning records, there are still nine teams with a realistic of being the AFC's second wild card and sixth playoff team.


text:
School Adventure - Vietnam North to South
Vietnam, School Expeditions, 14 days - from £1,395 (land only) - from €1,955 (land only) - from $2,260 (land only)
Country Profile
The national language of Vietnam is Vietnamese, although some of the hill tribes have their own unique languages. Outside of the main tourist areas, few Vietnamese speak English and it is well worth the effort of learning a few simple phrases and common greetings. Very few tourists make the effort to learn a little Vietnamese so it will really be appreciated if you have a go. Your guide will be delighted to help you with your Vietnamese pronunciations. We recommend you take a pocket phrase book and practice some key phrases.
Vietnam has a tropical climate with two distinct monsoons. From May to September during the the southern monsoon the prevailing winds are south to southeasterly and from October to April, the north monsoon is dominant with northerly to northeasterly winds. There is a transition period between each monsoon season when winds are light and variable. Temperatures are generally high all year round for southern and central Vietnam, but northern Vietnam has a definite cooler season as the north monsoon occasionally brings in cold air in from China. September to November and March to May are the best times for trekking in North Vietnam. Daytime temperatures at this time are in the range 15-28°C with night-time temperatures around 5-10°C. Vietnam has a single rainy season during the south monsoon. Rainfall is infrequent and light during the remainder of the year. During the north monsoon, northern Vietnam has cloudy days with occasional light rain, while southern Vietnam tends to be dry and sunny.
The currency of Vietman is th dong but in main tourist area it is also possible to pay for some goods and services in US dollars.
Visa Requirements
A passport with at least 6 month remaining validity is required. Nationals of EU countries, USA, Canada, Australia, New Zealand, South Africa & Switzerland also require visas. Visas should be obtained from the embassy of Vietnam in your home country prior to travel. More detailed information on visas can be found on the website on the trip page for your holiday.
You should attend your own doctor and dentist for a check-up. Your doctor will have access to the most up to date information on the required vaccinations for the country you are visiting. In general we recommend vaccinations against the following: Polio, Tetanus, Typhoid, & Hepatitis 'A'. Malaria prophylaxis is generally recommended for visits to Vietnam. Yellow Fever vaccination is not required unless arriving from an endemic area. A very good online resource is the National Health Travellers website at fitfortravel.nhs.uk


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Owner of Internet service provider PRQ believes police investigations into his company have to do with sites that deal in illegal file-sharing.
After authorities raided Web host PRQ and seized three of its servers earlier this week, the owner now says police were after sites that dealt in piracy and copyright infringement.
Looking for new ways to avoid raids and the seizure of its information-full servers, the file-sharing service moves all of its content to the cloud.
week in review Mitt Romney hatches social network backlash while shakeup hits wireless sector. Also: Samsung appeals Apple verdict.
Following numerous raids across Europe, five are accused of pirating movies, but authorities don't target The Pirate Bay or WikiLeaks. Police say those arrested are not pirating for own financial gain.
The Internet has revolutionised the way we live, over almost 50 years of development. In this feature, we detail the 50 defining moments we feel are most significant to the Web
A new site that lets users share digital copies of magazines conveniently slips around U.S. copyright laws by hosting its domain name and servers abroad.


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I am undergoing with weight training and cardiovascular exercises these days majorly for reducing belly fat and for strengthening muscles as well . After workout i feel hungry so i immediately takes my dinner (not so heavy). Is that right to take dinner just after workout?
Take the 2-minute tour ×
Physical Fitness Stack Exchange is a question and answer site for physical fitness professionals, athletes, trainers, and those providing health-related needs. It's 100% free, no registration required.
Yes, it's okay to eat right away. Based on the advice from this article (Recovery Nutrition for Athletes, from the NSCA's Performance Training Journal):


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TOPsoccer, The Outreach Program for Soccer, is a league designed for children starting at the age of four with physical and/or mental disabilities. The object of TOPSoccer is player development, not competition and the teams are grouped by skill, not age, so that the players can move at their own speed as opposed to being forced to move up for the sake of their age.
Every year, TOPSoccer in Tracy, CA puts on an event called PumpkinFest. Pumpkinfest is an event in which a soccer tournament is combined with a BBQ for all those who wish to attend and watch these children play some soccer.
At this year's event, there were around 160 children participating, with an all time high of 500 people being served at the BBQ. It was a great day filled with soccer, laughter and some delicious burgers, with many people volunteering to make it possible.
Shirley Thompson, the President of the Tracy Youth Soccer League, sends a big thank you to all those that helped and can't wait to see the program grow in years to come.
1040 Serpentine Lane Suite 201
Pleasanton, CA 94566
Office: 925.426.KIDS (5437) Fax: 925.426.9473


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Three-day tickets for this year's Outside Lands festival are sold out, but a limited amount of single day tickets will be available starting Thursday, April 2nd at 10am PT. Ben Harper & The Innocent Criminals will be performing Saturday, August 8th.
In keeping with the spirit from the first three reunion shows soundboard releases, we are happy to offer up the fourth and final night of the Innocent Criminal reunion run at The Fillmore in San Francisco. This soundboard tape will be available for download for 24 hours only. Please share and enjoy. Thank you from Ben Harper & the Innocent Criminals. We will see you soon!!
The download link has expired. Thanks to all!
People of San Francisco and BHIC fans worldwide, we can't begin to thank you for welcoming this band back with so much love and enthusiasm. These first four shows were some of our favorite gigs ever and WE ARE JUST GETTING STARTED. In the continued spirit of gratitude to all the fans worldwide - new and old - we are doing a 24 hour release of the soundboard tape from the third night of music at the legendary Fillmore. Byron Bay Bluesfest ... We will see you next and we can't wait!
Update 3/30/2015 - The download link has expired. Thanks to all!


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|Softball » News » Schedule » Roster » Coaches » Statistics
ETSU softball team wraps-up fall season
Monday, October 06, 2003Johnson City, Tenn. (Oct. 6, 2003) -- Looking back on her team's performance this fall, ETSU head softball coach Amy Fuller claimed she was happy with what she saw on the field, and also knows what the Buccaneers need to do better in order to improve by spring. "We won a total of 11 games this fall, so I was extremely pleased overall," said Fuller. "We used this fall to find out what the strengths of this team were, but we also wanted to find out what we needed to work on over the winter." With a solid core of 12 returning players from last year's team that finished with a 28-26 record, ETSU won fall tournaments at Milligan and UNC Charlotte, including a runner-up finish at the ETSU Fall Round Robin tournament last weekend. The Buccaneers are scheduled to return to action on February 13, when they host Mars Hill in the team's season opener from Metro-Kiwanis Park in Johnson City.
Softball Archives
2003-04 Softball


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Hang tight!
Recipe by kelcampbell
"This pasta dish is wonderful served with a green salad. The best thing about it is that you can put this meal together in just a few minutes."
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1 (16 ounce) package
dry penne pasta
roma (plum) tomatoes, diced
1/2 cup
Italian dressing
1/4 cup
finely chopped fresh basil
1/4 cup
diced red onion
1/4 cup
grated Parmesan cheese
Absolutley delicious summertime meal! I have always had a phobia of using uncooked, fresh tomatoes in a sauce but I've been converted! lol My husband loves red onions and Italian dressing so I decided to give this recipe a try. I used four beefsteak tomatoes (my plum romas were not ripe yet) that I picked from my garden and I seeded and diced them. Then I picked a big handful of basil and chopped that up. I added 1/2 cup of Good Seasons Salad dsg ( that I had made with balsamic vinegar...I noted that alot of recipes for fresh tomato sauce add balsamic vinegar so that is how I incorporated it into this one). Finally, I used angel hair because that is what I had. It is just an explosion of freshness and summer in your mouth when you eat this. I highly recommend!
This sounded good until you got to the part with the bottled dressing. Instead, I would have sauteed some garlic and olive oil and then proceeded from there.
139 Ratings
I just loved this but I don't use or buy Italian dressing and I omitted the raw onion - straight olive oil and a little fresh minced garlic worked for me instead. Served this with "Grandma Bogie's Parmesan Chicken," recipe also from this site.
This is excellent. I added about 1 teaspoon of miniced garlic. This is wonderful hot, but I liked it better as a nice refreshing macaroni salad! Also would consider adding a can of olives for the salad.
This was fantastic.I made it tonight for dinner and we loved the flavor of all the mixture. I did like the other lady said about balsamic vinager. I used the bottle dressing. It was so good. I also chopped, (In my food processor) celerey, green onions & mushroom's very fine and sauteed them in olive oil and added them to the pasta and then added the chopped tomatoes. I tossed it all together with the other ingredient's while in the hot pan, and served it warm. The olive oil that it was used to cook the veggies really added to it. It was so good. Thank you for the recipe.
This was very quick, easy, and tasty. Very light for summer! I used Farfalle pasta, 6 roma tomatoes, chopped roasted red peppers and a small can of sliced black olives. I only had a handful of fresh basil, so I used that plus some dried. I skipped the onion because my family doesn't care for it. I added more grated parm than called for in the recipe. Even my picky 8 year old liked this, and my 12 year old said it was a keeper! Good warm and cold too!!
I had my doubts, but it worked out just fine. I made it according to the recipe and I thought the dressing was a little overpowering. I then drizzled a little olive oil on it and it was much better. I'll be making this again.
Quick, easy, and delicious! This is perfect for summer, when fresh tomatoes are so abundant. I used angel hair pasta and opted out the red onion. For the "Italian dressing", I kept it very, very simple and used a mix of olive oil and minced garlic. It doesn't get much better or much simpler than this!
* Percent Daily Values are based on a 2,000 calorie diet.
Pasta with Fresh Tomato Sauce
Serving Size: 1/8 of a recipe
Servings Per Recipe: 8
Amount Per Serving
Calories: 257
Calories from Fat: 28
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This delicious pasta dish comes together in just minutes.
See how to make Chef Johnson's homemade noodles and rich Bolognese sauce.
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Red Bull remain "extremely confident" of winning their appeal against the FIA's decision to disqualify Daniel Ricciardo from the Australian Grand Prix.
The Australian finished second in Melbourne earlier this month in the season-opening Grand Prix, but was excluded from the race after stewards ruled that the Red Bull debutant's RB10 had consistently been in breach of fuel flow limit regulations.
Red Bull announced their intention to appeal immediately after their the race, and now Red Bull Team Principal Christian Horner has revealed to Sky Sports News why is so confident that the decision will be overturned.
"We are appealing on the grounds that we do not believe, we are extremely confident, that we have not broken the rules, that we haven't exceeded the 100kg/h of fuel that is permitted to be utilised by the car and the engine," Horner told Sky Sports News on Tuesday.
"So that was the reason for our appeal, we feel we have a strong case and it will be down to the appeal court to ultimately decide."
The reigning Constructors' Champions' case is based on their interpretation of the FIA's Technical Regulations with Article 5.1.4, which states that "Fuel mass flow must not exceed 100kg/h.
The Article, however, doesn't say that this reading has to be provided by the FIA's sensors, and Red Bull believe they are within their rights to use their own measurement tools to prove that they didn't break the rules.
"Our whole case is on the fact of which reading is correct," Horner continued.
"We have a sensor that is drifting and isn't reading correctly versus a fuel rail that we know is calibrated and we know that hasn't varied throughout the weekend and has subsequently been checked and found to be not faulty and hasn't moved or varied at all since it was installed on the car prior to the weekend.
"Our argument is very simple - that we haven't broken the Technical Regulations. That we haven't exceeded the fuel flow limit and that the sensor, which hopefully we will be able to demonstrate in the appeal, is erroneous.
"I think the problem with the Technical Directive is that as we have seen in the Pirelli tyre case or the double diffuser days, that the directive, as it now states on the bottom of the directive, is the opinion of the Technical Delegate - it is not a regulation, it is not regulatory, it is purely an opinion.
"We are bound by the Technical and Sporting Regulations. 5.1.4 of the Technical Regulations says you must not exceed 100kg/h of fuel usage - we haven't done that. Therefore our view is we haven't broken the regulations and Technical Directives are of non-regulatory value."
The FIA's International Court of Appeal will hear their case on April 14.


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Home > Sports Memorabilia > NHL Team Gear & Collectibles > Florida Panthers > Florida Panthers Signature Rink Photo
Florida Panthers Signature Rink Photo
The perfect collector's item for any NHL team fan!
The Highland Mint presents NHL Signature Rinks, featuring your favorite team's home rink with players' facsimile signatures!
Each Signature Rink comes in a 12 inch x 20 inch wood frame, and each is individually numbered. Protected under durable glass, this item is a Limited Edition for the 2013 season and is officially licensed by the NHL and NHLPA. Proudly made in the USA!
Note: Player roster and rink photos may vary during the season.
Dimensions: 20"L x 1"W x 12"H; 5 lbs.
Florida Panthers Signature Rink Photo
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Kinder Morgan gets more time to answer pipeline questions
Kinder Morgan has been granted a two-week extension to answer thousands of questions from intervenors about its planned Trans Mountain oil pipeline project.
The National Energy Board decision pushes back the company's original June 4 deadline to June 18.
Kinder Morgan had asked for an extension to June 27 to respond to the more than 10,000 questions from 122 intervenors registered for the NEB hearings into the project that get underway next January.
The company still expects to answer questions from about half the intervenors by the original deadline.
Intervenors have been given a new deadline of July 4 to file subsequent motions in response to Kinder Morgan's answers.
The proposed $5.4-billion project would nearly triple Kinder Morgan's pipeline capacity to 890,000 barrels of oil per day and greatly increase the number of tankers passing through Vancouver harbour.
Community Events, September 2015
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Browse the print edition page by page, including stories and ads.
Aug 28 edition online now. Browse the archives.


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If you can dream it, you can do it. -Walt Disney
Quality is a great business plan. -John Lasseter
Let's make some funny pictures. -Tex Avery
I never considered a difference of opinion in politics, in religion, in philosophy, as cause for withdrawing from a friend. -Howard Zinn
When critics sit in judgment it is hard to tell where justice leaves off and vengeance begins. -Chuck Jones
And what do you benefit if you gain the whole world but lose your own soul? -Jesus
A man should never neglect his family for business. -Walt Disney
What's most important in animation is the emotions and the ideas being portrayed. -Ralph Bakshi
Once you have heard a strange audience burst into laughter at a film you directed, you realize what the word joy is all about. -Chuck Jones
Before enlightenment: chop wood, carry water. After enlightenment: chop wood, carry water. -Buddhist Proverb
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CelAction brings 3-D stereoscopy to 2D animators
Topics related to the business of animation.
1 post • Page 1 of 1
CelAction brings 3-D stereoscopy to 2D animators
Andy Blazdell, a long time ANer, heads up CelAction 2D. We're happy to post this latest announcement.
CelAction brings 3-D stereoscopy to 2D animators
June 9th 2010, Annecy
CelAction today announced a brand new add-in called PlusOne for their popular CelAction2D animation software that enables 2D animators to work in a full 3D environment, include 3D models in their scenes, and output full stereoscopic 3-D. Animators can use 3-D glasses to view and edit their stereoscopic scenes in real-time, without having to render first, making it much easier to produce effective 3D movement. Full 3D environments can be created either using existing 2D artwork oriented in 3D or by importing textured 3D models from a variety of standard formats. An unlimited number of cameras with full xyz movement and rotation can be set up and moved freely around the set.
"This is a breakthrough for 2D animation," said Andy Blazdell, CEO of CelAction. "Other 2D software companies have made half-hearted attempts to cash in on the stereoscopic boom, but we're taking 3-D stereoscopy very seriously. We've implemented powerful yet easy to use features, designed to enhance the 3-D viewing experience, both for the animator and the audience. This isn't just an afterthought, we have integrated it into our workflow properly."
To make sure that CelAction's 3-D efforts are in line with the market's needs, they have teamed up with Alexander Lentjes from 3-D Revolution Productions, a leading expert in stereoscopic 3-D animation production.
"I am pleased to be helping CelAction with their stereoscopic development," said Alexander. "Too many companies don't realise just how complex stereoscopy can be, so it's important to get it right. CelAction's feature set even puts some 3D software to shame."
The PlusOne module is an optional add-in to CelAction2D Professional Edition, and is automatically included in CelAction2D Studio Edition.
For more information about 3-D stereoscopy, visit 3-D Revolution Productions' website at http://www.the3drevolution.com
About CelAction Ltd.
London-based CelAction has been providing animation software solutions to the 2D industry for over 10 years, helping to create massively successful award-winning series such as Peppa Pig, Little Princess and Charlie & Lola. Their flagship product, CelAction2D, allows small teams of animators to work on very complicated shows, creating high-quality animation in short time-frames, in a variety of visual styles.
For more information about CelAction, please visit http://www.celaction.com
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(2 of 2 customers found this review helpful)
Gorgeous!! Rich color, easy to style!
By catmum
from Julian, CA
About Me Beauty Conscious
Comments about Paula Young Valerie Wig by Joan Collins:
This is my first Joan Collins wig. I have a dozen Paula Young ones and love them, but wanted to try something different. Although the style shown online is nothing like what the wig looks like "out of the box" ..I was able to style it with ease. I love the highlights, looks like I spent over 100 dollars at the salon. I gladly give this wig 5 stars. And I am truly picky and particular when it comes to my hair. If it looks "wiggy" I won't wear it! This wig is everything I was hoping for and the price was amazing!!! THANK YOU!!!!!
Bottom Line Yes, I would recommend this to a friend
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(5 of 5 customers found this review helpful)
I bought this TWICE!
By Krealtor
from Gulf Shore, Al.
Absolutely fabulous! So natural! I have never had as many compliments on any wig I have ever had! And it looks great even unstyled (wind blown) Don't buy one! Buy two!
(26 of 27 customers found this review helpful)
By City girl
from Harvey LA
This wig is shorter and straighter than depicted in photos. Really doesn't even look like the photo. It's uncontrollable on top and hard to style without hair spray.. Very disappointed especially since it is so pricey. Would not buy again.
Bottom Line No, I would not recommend this to a friend


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Visit an ITT Tech near you and see for yourself what an ITT Tech education involves.
Download our brochure today to learn more about our campuses, programs and life as an ITT Tech student.
The Mission of the ITT Technical InstituteThe ITT Technical Institute is an institution of higher learning that is committed to offering quality undergraduate and continuing education locally, nationally and worldwide to students of diverse backgrounds, interests and abilities. The institution offers career-related educational programs that integrate life-long learning with knowledge and skills to help students:
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Christmas has come early for young West Australian Daniel Ricciardo, with the 22 year-old securing a 2012 Formula One drive with the Scuderia Toro Rosso.
Ricciardo will join Frenchman Jean-Eric Vergne as part of a new look line up at the Red Bull owned team, replacing Sebastien Buemi and Jaime Alguersuari for the 2012 FIA World Championship season.
The Scuderia Toro Rosso was first established in 2005 with the intention of providing a first step into Formula One for the youngsters in the Red Bull driver program and is considered a training ground for future Red Bull Racing Team drivers.
AGPC Chief Executive Officer, Andrew Westacott said he is thrilled that Daniel has been able to secure a contract for the upcoming season.
"It has been an exciting six months for Daniel, he debuted for the Hispania Racing Team at the 2011 British Grand Prix and raced the remainder of the season gaining invaluable experience with 11 race starts," he said.
"We are absolutely delighted to see his hard work and talent rewarded with a permanent team position next season and are excited to watch him line up on the Albert Park grid when the 2012 season commences in Melbourne in March".
Fans wanting to witness history unfold as Ricciardo and fellow Australian Mark Webber compete at the Formula 1™ Australian Grand Prix can experience the thrill and adrenalin of Formula One, across 4 days of entertainment, for only $79 with an early bird ticket.


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Fun times were had at the old house of horrors last night. All the monsters' parts were falling off so it was up to the wolves to save the day. But what horrors would our little supernaturals have to More »
Quite the interesting episode of "Being Human" this week, with things headed in decidedly unexpected directions all around, on "Of Mice & Wolfmen." Had those developments been dubious, I might have ha More »
Being Human (US) "Of Mice and Wolfmen" Season 3 episode 9 airs on Monday, March 11 on Syfy (9-10 p.m. ET) on Syfy. Show Summary: The new season of "Being Human" picks up 15 months after the events More »
There was so much to enjoy in "Of Mice and Wolfmen" that even though the cure for the vampire flu left me slightly disappointed—ONLY slightly—I'm thrilled that the season appears to be righting itself More »
Oh my God was that one of the freakiest openers EVER on " Of Mice and Wolfmen " with Sally brushing her teeth? I almost shrieked when her toothbrush poked through her cheek. I was expecting her teeth More »


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Kosher Meat
Adapted from the files of Daniel Rogov, author of Rogov's Guide to Kosher Wines 2010
A Traditional Italian dish, consisting of braised veal shanks in white wine. Two wines are suggested that complement the dish.
1/2 cup olive oil or less
In a medium sized flameproof casserole dish, heat the oil.
In a small bowl mix together the flour, salt, pepper, nutmeg, sage, chervil and tarragon. Tie each of the pieces of veal shank with a string (this will ensure that the meat stays on the bone during the long cooking). Roll the tied meat in the flour mixture, coating lightly on all sides, add these to the casserole and sauté for 1 minute on each side. Add the chopped vegetables and cook for 5 – 6 minutes longer, turning the meat one more time during this. Season with additional salt and pepper to taste.
Add the wine and parsley and let cook uncovered on a medium high flame for about 8 – 10 minutes. Add the tomatoes, stir, well and let cook, covered now, for 45 minutes longer, adding stock as necessary to ensure that the bottom of the casserole will always be generously covered with liquid. After this, with a slotted spoon remove the meat from the casserole and set aside. Add the root vegetables, the garlic and the lemon rind, and simmer until the vegetables are just soft enough to be pierced through with the tines of a fork. Correct the seasoning again with salt and pepper, return the meat to the casserole and continue to cook, covered, until the meat is fully soft but still on the bones (about 10 – 15 minutes longer).
Transfer the meat to a large platter, remove the strings, and with two slotted spoons transfer them to individual plates. Divide the vegetables among the plates, spoon some of the sauce over and serve the remaining sauce in a sauceboat so that diners can add more as they like. Serve piping hot.
Yield: Serves 6
Suggested Wine Matches:
Yarden, Cabernet Sauvignon, 2007: Medium to full-bodied (leaning to the full), with soft tannins and sweet-and-spicy wood integrating nicely. An aromatic black fruit and chocolate nose, going on to show a fine array of blackberry, blackcurrant, wild berry and roasted herbs, all leading to a long and generous finish. Drink now-2024. Score 92. K
* Note that Falesco comes in both kosher and non-kosher editions so be sure to check the label on the bottle to be certain you are purchasing the one you want.
Recipes: Meat, Veal, Kosher, Wine Suggestions