Coding arrangement including variable length encoder incorporating a buffer filling control based on averaged block quality, and an associated decoding device
US5122874A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 22, 1990 |
| Grant date | Jun 16, 1992 |
| Priority date | — |
| Expiry date | Oct 22, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/10
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A coding arrangement which includes a coder for variable-length encoding provided with a quality control to determine the different coding characteristics, a buffer store for receiving the coded information originating from the said coder and for recovering them at an output terminal with a fixed rate thanks to the presence of a regulating circuit. The regulating circuit uses the average quality of packets of information blocks to control a filler circuit which supplies a fill quantity of the coded information. A correction circuit supplies a corrected quality value by correcting the average quality as a function of the fill quantity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.