Photographic system for step-motion projector
Abstract
Abstract A MOTION PICTURE RECORDING AND PROJECTING SYSTEM ADAPTED FOR USE WITH AUDIO TAPE ACCOMPANIMENT INCLUDING A CAMERA AND A PROJECTOR. THE CAMERA, IN RESPONSE TO SELECTIVE ACTUATION, EXPOSES A PORTION OF THE FILM FOR A PREDETERMINED TIME INTERVAL AND SIMULTANEOUSLY EXPOSES AN ELONGATED CONTINUOUS STRIP ALONG A MARGIN OF THE FILM, CORRESPONDING TO SCENES TO BE PROJECTED AT SLOW SPEED. THE TAPE RECORDER RUNS FOR A TIME PERIOD WHICH IS CONSIDERABLY GREATER THAN THE OPERATIONAL INTERVAL OF THE CAMERA. DURING PROJECTION, THE EXPOSED FILM MARGIN IS DETECTED AND UTILIZED TO SWITCH THE PROJECTOR DRIVE MECHANISM FROM NORMAL TO SLOW SPEED OPERATION. DURING SLOW SPEED OPERATION THE TAPE ACCOMPANIMENT IS DRIVEN AT ITS NORMAL PLAY-BACK AND RECORDING SPEED.
Inventors
- 👤 Erwin E Figge
- 👤 Edward J Ho
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-07-04 | 1976-01-03 | 1976-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-04 | 1980-01-03 | 1980-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-04 | 1984-01-03 | 1984-07-04 | $7700.00 | Window Closed / Lapsed |