Digital filtering of blocks of data values with symmetric data extension at edges of the blocks
US5381354A · kind A · utility
17Cited by
3References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 30, 1993 |
| Grant date | Jan 10, 1995 |
| Priority date | — |
| Expiry date | Aug 30, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/14
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Digital filters are described for filtering blocks of data values. In order to reduce edge effects, symmetric data extension at the edges of the blocks is used. Multiplexers 34, 40, 46, 52 are used to pass data values between non-adjacent delay elements 36, 38, 42, 44, 48, 50 at leading and trailing edges of a data block to effect symmetric extension. The delay elements can be multisample delay elements and data being filtered can be multiplexed data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.