07076104 is referenced by 28 patents and cites 191 patents.

A compression and decompression system in which a reversible wavelet filter are used to generates coefficients from input data, such as image data. The reversible wavelet filter is an efficient transform implemented with integer arithmetic that has exact reconstruction. The present invention uses the reversible wavelet filter in a lossless system (or lossy system) in which an embedded codestream is generated from the coefficients produced by the filter. An entropy coder performs entropy coding on the embedded codestream to produce the compressed data stream.

Title
Compression and decompression with wavelet style and binary style including quantization by device-dependent parser
Application Number
9/236753
Publication Number
7076104 (B1)
Application Date
January 25, 1999
Publication Date
July 11, 2006
Inventor
Michael J Gormish
Los Altos
CA, US
Martin Boliek
San Francisco
CA, US
Ahmad Zandi
Cupertino
CA, US
Edward L Schwartz
Sunnyvale
CA, US
Alexander F Keith
East Palo Alto
CA, US
Agent
Blakely Sokoloff Taylor & Zafman
Assignee
Ricoh Corporation
CA, US
Ricoh
JP
IPC
G06K 9/46
G06K 9/36
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