Video encoding and decoding apparatus
US6002802A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 24, 1996 |
| Grant date | Dec 14, 1999 |
| Priority date | — |
| Expiry date | Oct 24, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/152
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An encoding apparatus comprising a encoder for encoding an input video signal, thereby generating encoded data, an output buffer for receiving the encoded data and outputting the data at a predetermined transmission rate, and an encoding control circuit for selecting a frame to be encoded. In the encoding control circuit, the target number of bits for each frame is calculated on the basis of the encoding bit rate, the encoding frame rate and the limits of delay, all of which are set externally. The number of encoded bits, thus calculated, is compared with the target number of encoded bits. A quantizer and a switch are controlled in accordance with the difference between the number of encoded code and the target number of encoded bits, thereby adjusting a quantization parameter and the number of frames which are to be skipped.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.