System for reading and writing vertical interval time code
US4802023A · kind A · utility
10Cited by
7References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 21, 1986 |
| Grant date | Jan 31, 1989 |
| Priority date | — |
| Expiry date | Aug 21, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B27/3054
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A system for editing videotape includes a subsystem to scan particular information lines within vertical blanking intervals and to identify particular lines that contain time code information, and a subsystem to generate time code information and to write the generated time code information at selected lines in vertical blanking intervals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.