Apparatus and method for high speed recording of video signals
US6393199B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 18, 1998 |
| Grant date | May 21, 2002 |
| Priority date | — |
| Expiry date | Mar 18, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B33/121
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A helical scan tape recorder records VHS video and audio at speeds up to 40× the playback speed of a standard VHS VCR. The recorder employs a high speed scanner operating in a helical scan mode. Input signals feed the scanner through a capacitive coupler. For VHS recording, the scanner has 32 heads mounted on its periphery; 16 video heads and 16 audio heads. An external source of video and associated audio provides 8 channels each of video and audio, and each channel drives 2 heads in parallel. During a half rotation of the scanner, heads fed from the 8 channels contact the tape and are recorded, and during the next half rotation the other group of 8 heads are similarly recording. The audio is delayed so that a segment of video records over its associated audio segment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.