Block-based negative filtering of MPEG-2 compliant table sections
US7028095B1 · kind B1 · utility
7Cited by
12References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 23, 2000 |
| Grant date | Apr 11, 2006 |
| Priority date | — |
| Expiry date | Nov 30, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/4345
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Positive negative and mixed digital filtering over an arbitrary variable length bit string of a datastream by evaluating bits, bytes or any other desired granularity in accordance with a mask, a filter and a not match byte. Results are accumulated over a plurality of data blocks by ANDing of compare result values similarly representing match and not match results identically depending on the not match bit except where negayive logic has been applied over an entire data block. The preferred form of the digital filter is particularly adapted to be MPEG-2 compliant.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.