Magnetic recording and reproducing apparatus
US4786986A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 28, 1987 |
| Grant date | Nov 22, 1988 |
| Priority date | — |
| Expiry date | Oct 28, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/833
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magnetic recording and reproducing apparatus of a cassette type has a first and a second recording mode converting a luminance signal of a video signal into an FM luminance signal having a first and a second carrier frequency and recording the FM luminance signal on a magnetic tape respectively. When the FM luminance signal is to be recorded according to the second recording mode, a magnetic tape having an excellent short wavelength recording characteristic is used for recording. A cassette containing this magnetic tape is provided with a configurational feature on its upper or lower half, and a detector for detecting this feature is disposed in the apparatus. When the detector detects that a magnetic tape is adapted for recording according to the first recording mode, the FM luminance signal is recorded according to the first recording mode, but when the detector detects that the magnetic tape is adapted for recording according to the second recording mode, the user can select either the first recording mode or the second recording mode as desired. A discriminating circuit is disposed in the reproducing system to discriminate as to whether the FM luminance signal was recorded ac…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.