Video recording on disk and device for the repetitive reading of such a recording
US4347527A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 14, 1980 |
| Grant date | Aug 31, 1982 |
| Priority date | — |
| Expiry date | Aug 14, 2000 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/9267
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The invention relates to recordings in the form of disks and to the reading devices making it possible to repetitively read a still with its sound accompaniment. The invention relates to a recording where the video and audio data form interlaced blocks located in equal sectors of the same turn. The repetitive reading device utilizes buffer stores in which are loaded the video and audio data blocks. The reading of the buffer stores takes place at a reduced speed in order to reconstitute uninterrupted sequences of video and audio data. The invention is more particularly applicable to the storage of pictures on disk with their sound accompaniment with a view, for example, of giving programmed audio-visual instruction or teaching.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.