Storage and retrieval of digital data on video tape recorders
US4467373A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 7, 1981 |
| Grant date | Aug 21, 1984 |
| Priority date | — |
| Expiry date | Oct 7, 2001 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B20/18
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A digital data manipulation system for compensating for drop outs on a video recording medium. Data received by an assembler is assigned to a predetermined non-standard format prior to recording. Addition of synchronizing information via process amplifier allows the digital data to be recorded on an analog video tape recorder as lines of video information. A checksum generator and parity bit generator are provided to effect two dimensional coding indicative of assigned data content both prior to recording and following playback. By detecting any differences between the coding information this identifies drop out errors to allow compensation therefor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.