Film handling apparatus control system
US3941465A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 28, 1973 |
| Grant date | Mar 2, 1976 |
| Priority date | — |
| Expiry date | Jun 28, 1993 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03D13/007
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A control system for a cinematographic film cassette processor/projector unit. The control system includes a function programmer comprising an operating cycle selector responsive to a processed/unprocessed indicator on the cassette to program the control system for either a processed-film operating cycle or an unprocessed-film operating cycle and a logic unit for programming the sequence and execution of the plural operational modes of the apparatus during an operating cycle. The control system further includes a reel drive control circuit having plural speed and direction drive control modes programmed by the function programmer, a mode change actuator circiut responsive to cessation of film movement to actuate a change in the operational mode of the processor/projector by changing the logic state of the logic disc assembly, and a manually-actuatable replay circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.