Record mode discriminating apparatus using non-pilot repetitive signals
US6219487A · kind A · utility
2Cited by
14References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 22, 1994 |
| Grant date | Apr 17, 2001 |
| Priority date | — |
| Expiry date | Jun 22, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/83
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A record mode discriminating apparatus used in a magnetic recording/reproducing system records a record mode discriminating signal having a predetermined periodicity that is dependent upon the record mode being used to record an audio/video signal. The record mode discriminating signal is recorded along with the audio/video signal and a pilot signal. During reproduction of the recorded signals in a search mode the record mode discriminating signals are detected and the record mode is determined therefrom. The detected record mode is used to control the speed of the recording medium during playback.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.