Audio visual apparatus
US4088399A · kind A · utility
2Cited by
6References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 13, 1976 |
| Grant date | May 9, 1978 |
| Priority date | — |
| Expiry date | May 13, 1996 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B31/02
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
In a dual film-gauge telecine apparatus two optical sound heads are provided in close proximity to the drive capstan. The drive capstan is provided with an annular groove to support one of the optical sound heads. The sound heads comprise a light source and light sensitive detector so disposed as to be in alignment on opposite sides of the edge of a film of the respective gauge.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.