Error coding for video disc system
US4309721A · kind A · utility
22Cited by
2References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 12, 1979 |
| Grant date | Jan 5, 1982 |
| Priority date | — |
| Expiry date | Oct 12, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B20/1813
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An improved error code used for encoding and decoding data in a video disc system of the type wherein the data format comprises a start code followed by an error code and information bits. The error code is chosen so that the error code check register in the video disc player begins with the start code in the register, and, if no errors are detected after the full message is received, also ends with the start code in the register. This unique code simplifies both the control logic and the decoding logic in the video disc player decoder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.