Encoding method for acquiring codes corresponding to prediction residuals, decoding method for decoding codes corresponding to noise or pulse sequence, encoder, decoder, program, and recording medium
US9230554B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 8, 2012 |
| Grant date | Jan 5, 2016 |
| Priority date | — |
| Expiry date | Oct 6, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M5/06
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In encoding, the number of bits to be assigned to codes corresponding to noise or a pulse sequence obtained according to prediction analysis applied to time series signals included in a predetermined time interval is switched according to whether an index that indicates a level of periodicity and/or stationarity of input time series signals satisfies a condition that indicates high periodicity and/or high stationarity or a condition that indicates low periodicity and/or low stationarity, to acquire the codes corresponding to the noise and the pulse sequence. In decoding, a decoding mode for codes corresponding to noise or a pulse sequence included in codes corresponding to a predetermined time interval is switched according to the same criterion as that described above to decode the codes corresponding to the noise or the pulse sequence to acquire noise or a pulse sequence corresponding to the predetermined time interval.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.