Adaptive leak HDTV encoder
US5331348A · kind A · utility
11Cited by
4References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 27, 1992 |
| Grant date | Jul 19, 1994 |
| Priority date | — |
| Expiry date | Jul 27, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/61
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An improved predictive encoder where the leak signal is a function of the buffer fullness of the encoder. More specifically, the signals stored in the encoder output buffer are further encoded based on the fullness of the buffer, and information about this further encoding is used in determining the leak factor level. In accordance with another improvement, this leak factor level is not constrained to granularity that is imposed by the decoder hardware. Removal of the constraint is accomplished by cycling through a sequence of permissible leak levels that averages at the desired level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.