Helical-scan information recording-playback apparatus
US5463505A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 15, 1990 |
| Grant date | Oct 31, 1995 |
| Priority date | — |
| Expiry date | Jun 15, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2220/90
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An information recording-playback apparatus is made up of a circuit for recording first information, which is video data or data for the evaluation of a recording medium such as a magnetic tape, on the first track formed by helical scanning of rotary heads, a circuit for recording second information such as a control signal or time code or third information on a second or third track formed by one or more fixed heads in the longitudinal direction of the tape, and switching device for selecting the operational mode in which the first information and the second or third information are recorded or the operational mode in which only the second or third information is recorded. The arrangement enables pre-formatting of only the second or third information without recording the tape evaluation information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.