Editing system for videotape sound
US4214278A · kind A · utility
14Cited by
7References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 30, 1978 |
| Grant date | Jul 22, 1980 |
| Priority date | — |
| Expiry date | Nov 30, 1998 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2220/90
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus is provided enabling sound editing for videotape to be carried out using procedures substantially identical to those conventionally used when the picture carrying medium is photographic film. Editing is carried out using a mechanical synchronizer, the tape drive of a videotape playback apparatus being slaved to the synchronizer shaft using control signals generated by comparing codes, updated in accordance with cumulative movements of the shaft, with codes recorded on the videotape to identify successive frames of picture information thereon.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.