Adaptive rounder for video signals
US4965668A · kind A · utility
33Cited by
6References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 9, 1989 |
| Grant date | Oct 23, 1990 |
| Priority date | — |
| Expiry date | Nov 9, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G3/2048
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An adaptive rounder for avoiding truncation errors for digital video signal has a dither source that is modified by the bits of an integer portion of an input digital signal corresponding to the video signal. A dither signal from the dither source has a number of bits equal to a fractional portion of the input digital signal. The dither signal is added to the input digital signal and the result is truncated to produce an output digital signal having a number of bits equal to the integer portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.