Method and apparatus for stop-motion playback of a record disc
US4583131A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 2, 1985 |
| Grant date | Apr 15, 1986 |
| Priority date | — |
| Expiry date | Oct 2, 2005 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/783
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A video record medium, such as a record disc, for recording a composite video and audio signal suitable for stop-motion playback, with accompanying audio. Discrete segments of an analog audio signal are digitized and compressed in time and recorded on alternate tracks on the disc, and corresponding frames of a video signal are recorded on the tracks located therebetween. During playback of the disc, a selected audio track is scanned initially and the digital audio data recovered therefrom is entered into a memory device, after which the track for recording the corresponding video frame is scanned in a repeated fashion, to produce a stop-motion display of the frame, while the stored audio data is extracted from the memory device and converted back to an analog format, for simultaneous playback at its original speed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.