Data coding method and apparatus therefor
US6483944B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 21, 1999 |
| Grant date | Nov 19, 2002 |
| Priority date | — |
| Expiry date | Jun 21, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B27/3027
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A picture target amount-of-code calculating unit calculates a target amount of codes for each picture type that corresponds to an encoding rate that has been determined by an audio/video encoding rate determining unit. An amount-of-code controlling unit controls the quantizing scale of a quantizing unit so as to make the target amount of codes for each picture type match with a total amount of codes of a unit as a whole. A unit address calculating unit calculates the addresses used when a search is made, as navigation data, on the basis of the target amount of codes for each picture type and the encoding rate. A unifying unit makes a construction of the unit while, on the other hand, a navigation data producing unit depicts navigation data at a foremost position of the unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.