Method and system for the fractal compression of data using an integrated circuit for discrete cosine transform compression/decompression
US5923376A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 22, 1998 |
| Grant date | Jul 13, 1999 |
| Priority date | — |
| Expiry date | Oct 22, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/99
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for compressing related data sets of a sequence is disclosed. The method compares domain blocks from a current frame buffer to range blocks in a previous frame buffer or vector quantization ("VQ") tables to generate codes. The method includes determining an initial codeword that represents a domain block of a current frame buffer in reference to a selected range block in a previous frame buffer. The selected range block is identified by a best measurement determined from an initial type of search performed on a first group of range blocks in the previous frame buffer. A cost factor is generated for coding the initial codeword. A first estimated cost of a codeword representing the domain block in reference to a second range block is determined. The second range block is identified by an estimated best measurement determined for a second type of search performed on a second group of range blocks. The first estimated cost is compared to initial codeword cost and a second type of search is performed in response to the first estimated cost being less than the initial codeword cost. A second codeword is generated that represents the domain block in reference to a second range bl…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.