Recording device of a time lapse magnetic video recorder
US4238776A · kind A · utility
4Cited by
6References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 12, 1978 |
| Grant date | Dec 9, 1980 |
| Priority date | — |
| Expiry date | Oct 12, 1998 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/783
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A recording device of a helical-scan type time lapse video recorder comprising a mechanism for making the phase of rotation of the rotary magnetic head and the phase of the horizontal sync signal coincide with each other, and means for allowing the recording of only the frame or field immediately after the coincidence is attained at a constant or a variable time interval. Said mechanism includes means for forcibly imparting an irregularity of rotation to said rotary magnetic head.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.