System and method for increasing dual FIR filter efficiency
US6374279B1 · kind B1 · utility
5Cited by
4References
26Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 22, 1999 |
| Grant date | Apr 16, 2002 |
| Priority date | — |
| Expiry date | Feb 22, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H17/0202
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A method and system are provided for efficiently implementing a dual finite impulse response (FIR) filter to vertically filter video data. A unique feedback mechanism enables multi-filter performance while implementing fewer actual filters and accompanying line delays than required in the available art. Advantageous placement of arithmetic elements is used to compensate for approximation error introduced by the feedback mechanism, resulting in substantially undiminished circuit performance in a more efficient circuit than currently available.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.