Method and apparatus for encoding digital data
US6577255B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 16, 2002 |
| Grant date | Jun 10, 2003 |
| Priority date | — |
| Expiry date | Oct 16, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2020/1457
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Encoding tables are accorded with variable-length encoding rules using a variable constraint length. A DSV control bit is periodically inserted into a first input bit stream to generate a second input bit stream. Every m-bit piece of the second input bit stream is encoded into an n-bit output signal forming at least a portion of an output code word by referring to the encoding tables. Thereby, the second input bit stream is converted into a first output bit stream composed of output code words and observing RLL (d, k). A sync word is inserted into the first output bit stream for every frame to generate a second output bit stream. A frame-end output code word is terminated at a position before a next-frame sync word. DSV control of the second output bit stream is implemented in response to the inserted DSV control bits.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.