06990247 is referenced by 42 patents and cites 189 patents.

A method and apparatus for performing compression and/or decompression is described. In one embodiment, the present invention comprises a system having a buffer, a wavelet transform unit, and a coder. The wavelet transform unit has an input coupled to the buffer to perform a wavelet transform on pixels stored therein and to generate coefficients at an output. The coder is coupled to the wavelet transform unit to code the transformed pixels received from the buffer.

Title
Multiple coder technique
Application Number
10/339544
Publication Number
6990247 (B2)
Application Date
January 8, 2003
Publication Date
January 24, 2006
Inventor
Edward L Schwartz
Sunnyvale
CA, US
Agent
Blakely Sokoloff Taylor & Zafman
Assignee
Ricoh Corporation
NJ, US
Ricoh
JP
IPC
G06K 9/46
G06K 9/36
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