Adaptive predictive encoder
US4093962A · kind A · utility
22Cited by
5References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 1, 1976 |
| Grant date | Jun 6, 1978 |
| Priority date | — |
| Expiry date | Dec 1, 1996 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/50
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In a predictive encoder, a predictive error signal is multiplied in effect by a controllable factor before quantized into information codes. A variable length coder converts the information codes into variable length codes, which are temporarily stored in a buffer memory for transmission to a receiver at a predetermined bit rate. The controllable factor is controlled by buffer occupancy of the buffer memory. Normally, the factor may be 1/2. The factor is decreased when the buffer occupancy increases towards overflow.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.