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
Compositions substantially free of sodium chloride and methods for the storage of red blood cells
Silicon carbide substrate, epitaxial wafer and manufacturing method of silicon carbide substrate
Methods and systems for automated segmentation of dense cell populations
Antenna device and wireless communication apparatus
Graphical communication user interface with graphical position user input mechanism for selecting a display image
Local access to data while roaming with a mobile telephony device
Automated pizza preparation and vending system
  Randomly Featured Patents
Process for depositing salts
Pet collar
Multi-chip semiconductor package
System and method for user-configurable resource arbitration in a process control system
Electricity generating and air conditioning system
Slider for inhibiting stiction and with backbar
Apparatus for cleaning floor surfaces
Multilayer ceramic capacitor and manufacturing method thereof
Method of and apparatus for analysing data files
Complementary metal oxide semiconductor structure for battery protection circuit and battery protection circuit having the same