Information encoding method and apparatus, information decoding method and apparatus, information transmission method, and information recording medium
US5680130A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 17, 1995 |
| Grant date | Oct 21, 1997 |
| Priority date | — |
| Expiry date | Nov 17, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L2025/935
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
According to the present invention, for encoding input signals, the input signals are transformed into frequency components, and the frequency components are separated into a first signal composed of tonal components and a second signal composed of other components. The first and second signals are encoded respectively, and code strings for transmission or recording are generated on the basis of encoded signals resulting from first and second encoding. For example, only the first signal is encoded and the code string is caused to include partial information strings grouped so as to have common values on the basis of at least one of reference parameters pertaining to the signal separation and parameters pertaining to the first encoding. Thus, more efficient encoding than in the conventional technique can be realized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.