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
Plants and seeds of hybrid corn variety CH817100
Linear book scanner
Elastic wave device having a capacitive electrode on the piezoelectric substrate
Thermoforming sheet loading apparatus and method
Electronic apparatus and manufacturing method of electronic apparatus
Electrode composition with enhanced performance characteristics
Method for production of a thermoelectric apparatus
  Randomly Featured Patents
Image forming optical system and electronic image pickup apparatus using image forming optical system
Data processing system and method for a surface inspection apparatus
Wheel attitude control method and wheel attitude control device
Electric heating appliance
Mechanism for binding nails
Computerized tomographic reconstruction method utilizing reflection
Support for fuel reforming catalyst with excellent heat and mass transfer characteristics and method of preparing the same
Small sized optical transmission unit suitable for non-simultaneous transmission and reception
Goalkeeper's glove with protective fingertip extension
Calculation methodology for complex target signatures