Method of encoding a digital data stream
US6882296B2 · kind B2 · utility
Assignees
Inventor
Key dates
| Filing date | Nov 6, 2003 |
| Grant date | Apr 19, 2005 |
| Priority date | — |
| Expiry date | Nov 6, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B20/14
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of encoding a digital data stream which comprises providing a first stream of clock pulses at a first rate; deriving a second stream of clock pulses from the first stream at a second rate which is an integer sub-multiple of the first rate and less than the minimum bit rate in the data stream; monitoring the data stream for changes in level therein; counting pulses in the first stream starting with the occurrence of a pulse in the second stream; capturing the pulse count when a change in level in the data stream is detected or when the next pulse in the second stream of clock pulses occurs; and upon the occurrence of this pulse in the second stream producing a time domain descriptor of the data by combining the count obtained with information as to the direction of the change in level in the data input stream.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.