Apparatus useful for converting asynchronous video information to synchronous video information
US4334247A · kind A · utility
5Cited by
20References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 26, 1980 |
| Grant date | Jun 8, 1982 |
| Priority date | — |
| Expiry date | Jun 26, 2000 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2220/90
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A pair of field store devices which are slaved to a stable sync signal are employed to record, along with such sync signal, video information on a recording medium. During periods of asynchronism in the video input to the field store devices, synchronous noise or a synchronous blank is inserted into the output of the field store devices. Such use of field store devices enables (1) the easy conversion of one recording format to another; (2) the splicing of scenes recorded on different tapes of the same, or different formats to be effected on a tape with any format; and (3) the recording of stillframe scene information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.