Method, apparatus and computer program product for image data compression and decompression capable of high-speed processing
US6792150B1 · kind B1 · utility
7Cited by
6References
16Claims
0Family size
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Key dates
| Filing date | Nov 2, 2000 |
| Grant date | Sep 14, 2004 |
| Priority date | — |
| Expiry date | Sep 5, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/13
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A compression and decompression apparatus, method and computer program product, wherein compression and decompression of image data is performed via a combination of two-dimensional reversible wavelet transform processing, context model processing, and binary entropy encode/decode processing. Faster processing, as compared to conventional devices and methods, is achieved by performing the context model processing and the binary entropy encoding/decoding processing in parallel, such that two-story pipeline processing is performed, resulting in a reduction of a basic cycle time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.