Digest playback apparatus and method for video cassette recorder
US5757565A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 11, 1995 |
| Grant date | May 26, 1998 |
| Priority date | — |
| Expiry date | Aug 11, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2220/90
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Digest playback apparatus and method for a VCR. The digest playback apparatus includes a system controller for outputting a plurality of control signals to control the entire operation of a video cassette recorder system, the plurality of control signals including speed-change multispeed and direction data and audio multispeed change mode ON/OFF data. An analog/digital conversion circuit converts an analog audio signal read by an audio head and then restored to its original state into digital audio data regardless of a speed-change mode. A memory stores the digital audio data from the analog/digital conversion circuit. A digital/analog conversion circuit converts the digital audio data stored in the memory into an analog audio signal, and a control circuit controls the analog/digital conversion circuit, the memory and the digital/analog conversion circuit to output the analog audio signal from the digital/analog conversion circuit as a 1 multispeed which allows the user to accurately listen to the output analog audio signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.