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
Internal wiring structure of semiconductor device
Flat panel crystal display employing simultaneous charging of main and subsidiary pixel electrodes
Silicon carbide substrate, epitaxial wafer and manufacturing method of silicon carbide substrate
Method, apparatus, computer program, and computer readable storage media for controlling the insertion of tab sheets into a print job
Method for producing a flexible composite elastomeric polyurethane skin
Chemically resistant membranes, coatings and films and methods for their preparation
Direct file transfer between subscribers of a communications systems
  Randomly Featured Patents
Photodetector with a multilayer filter and method of producing the same
Multi-layer wiring structure having conductive sidewall etch stoppers and a stacked plug interconnect
Method and apparatus for inspecting and controlling tipping paper perforation
Electro-optic modulators
Hydroperoxide lyases
Efficient digital ITU-compliant zero-buffering DTMF detection using the non-uniform discrete fourier transform
Secure streaming container
Cobalt-catalyzed process for preparing 1,3-propanediol
Silicone emulsion polishes and their formulation
Adjustable compound bow