Overlap recording device for sound cinecamera
US4163261A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 29, 1977 |
| Grant date | Jul 31, 1979 |
| Priority date | — |
| Expiry date | Aug 29, 1997 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B19/26
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A sound cinecamera is provided with a film feeding motor, an electric circuit for sound recording, an operating means, a controlling signal generating circuit for the purpose of generating, by receiving an instruction signal generated from said operating means, a sound record controlling signal during the time of film reverse-winding for overlap recording and reducing said controlling signal according to a predetermined time constant at the time of starting the film feeding operation again, a sound recoding signal control circuit for the purpose of controlling the level of recording signal in said sound recording circuit by receiving said controlling signal from said controlling signal generating circuit, and an AC biasing control circuit for the purpose of controlling the level of the AC biasing signal to said sound recording circuit by receiving said controlling signal from said controlling signal generating circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.