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
Nucleic acid sequences encoding secE/sec61-gamma subunits of protein translocation complexes
System and method for reliable packet data transport in a computer network
Push to release cover for a portable electronic device
Light emitting device and light emitting device package
Stabilization of dicarbonate diesters with protonic acids
Image processing apparatus, image printing apparatus and printing data generation method
Wafer level packaging structure with large contact area and preparation method thereof
  Randomly Featured Patents
Ferroelectric memory
Voice caller ID
Single source metalloorganic precursors to type II-VI semiconductors
Device for measuring lateral deformations in material test specimens
System and method for re-routing a multicast stream
Telephone set with improved hook switch mechanism
Adsorption processes
Bifunctional energy-reversible acyl-compositions
Evaporator core having biocidal fixture
Egg scoop or spoon