Two-dimensional inverse discrete cosine transform processor
US5636152A · kind A · utility
13Cited by
4References
16Claims
0Family size
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Key dates
| Filing date | Apr 28, 1995 |
| Grant date | Jun 3, 1997 |
| Priority date | — |
| Expiry date | Apr 28, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F17/147
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A two-dimensional inverse discrete cosine transform (2-D IDCT) processor comprises cosine angle index generators, pipelined multipliers and a symmetrical kernel. The 2-D IDCT processor of the invention has a five-stage pipelined structure for carrying out a coefficient-by-coefficient 2-D IDCT algorithm and can be operated at a clock rate of more than 50 MHz to achieve a pixel rate of about 400 MHz.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.