Digital signal encoding and decoding method and apparatus without transmitting information on quantization width
US6064324A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 16, 1998 |
| Grant date | May 16, 2000 |
| Priority date | — |
| Expiry date | Jun 16, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/46
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Digital signal encoding and decoding method and apparatus are provided, by which the amount of codes for communicating the quantization width can be reduced to the utmost and the coding efficiency can be improved. In the method, at the time of encoding a digital signal, the quantization width is determined based on the amount of encoded data which have already been encoded, and information on the quantization width is not included into generated encoded data. At the time of decoding, the quantization width is determined according to the amount of encoded data which have already been received. Therefore, even if the quantization width is changed, information on the quantization width is not included in the generated encoded data and thus the amount of generated codes can be reduced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.