Camera allowing simultaneous sound recording
US4000940A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 23, 1974 |
| Grant date | Jan 4, 1977 |
| Priority date | — |
| Expiry date | Sep 23, 1994 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B31/02
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention relates to a camera allowing simultaneous sound recording into which a film magazine housing a photographing film which can record sound information thus allowing simultaneous sound recording and an ordinary photographing film magazine can be selectively loaded. Also provided is a detection device to distinguish the kind of film magazines mentioned above and a linking mechanism which shifts the camera into a sound recording state in correspondence with the closing action of the magazine chamber cover of a camera only when the above mentioned detection device detects the film magazine which allows simultaneous sound recording.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.