Resources Contact Us Home
Codebook-based lossy data compression encoding system

Image Number 5 for United States Patent #5838691.

A communication system encodes input data by comparing the data to records in a lossy codebook to determine the closest match. An index corresponding to the record that most closely matches the input data is retrieved from the codebook and transmitted to a receiver. For a predetermined sampling interval, the communication system collects statistics of the frequency of occurrence of each record matching the input data. The records are sorted in descending order by the frequency of occurrence. Using either a predetermined error rate or a predetermined subtable size, the communication system creates a subtable of the records having the greatest frequency of occurrence. To reduce the search time of finding a record matching the input data, the communication system searches only the subtable for records until the error of the match in the subtable exceeds a preselected threshold or until a preselected period of time has elapsed. The communication system again collects statistics of the frequency of occurrence.

  Recently Added Patents
Upper electrode and plasma processing apparatus
Technique for recycling match weight calculations
Dynamic control of scaling in computing devices
Coarse frequency offset estimation and correction for high-speed optical communications
Charger device for a portable electronic device
Ensuring image integrity using document characteristics
Methods for treating thyroid cancer
  Randomly Featured Patents
Vehicle and method of advising a driver therein
Automatic paper towel dispenser with horizontally extending loading door lip
Apparatus for satisfying the non-nutritive, oral-motor sucking needs of infants
LED automotive fog lamp
Return-to-neutral mechanism of rear wheel steering device
Agent for forming coating for narrowing patterns and method for forming fine pattern using the same
Linearly adjustable multi resistance ratio exercise apparatus
Game of entertainment
Microbubbles of oxygen
Metal stud punch system and a method of manufacture