Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Data compression method and apparatus










Image Number 4 for United States Patent #7864085.

Embodiments of the invention include a dictionary based data compression method, apparatus and system that is not based on either the LZ77 compression algorithm or the LZ78 compression algorithm, but includes many features of the LZW compression algorithm. The data compression method includes creating a mapping table of the messages in the alphabet of messages to a corresponding plurality of codewords, maintaining a dictionary including a mapping table of a first codeword and a second codeword to a new codeword, reading an input ensemble including a plurality of messages, converting the messages to an input codeword using the mapping table, and outputting the converted codewords as an output ensemble of compressed data. Unlike conventional data compression methods, the dictionary is generated from the output ensemble only, and is not based on any input messages. Therefore, the dictionary more quickly builds to define longer sequences of messages compared to conventional data compression methods.








 
 
  Recently Added Patents
Method for adjusting link speed and computer system using the same
Elegant solutions for fingerprint image enhancement
Integrated multi-sat LNB and frequency translation module
Sending notification of event
Remote device pairing setup
System and method to assess serviceability of device
Polymeric structures comprising a siloxane
  Randomly Featured Patents
Integrated scheme for semiconductor device verification
Rotary screw machine with rotor thrust load balancing
Multi resistance ratio exercise apparatus
Shopping cart accessory
Solid state image sensor
Thin-fingered medical glove
Method for forming a via in a substrate
Multi-purpose scoop
Coffee maker
Instrument panel for a truck vehicle