Patent US4501478A successfully refreshed from Google Patents.
US4501478A
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US
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Scene-start and -end reference indicator arrangement for projector storing scene-start and -end frame counts
Assignee: Robert Bosch GmbH
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Filing: 1980-02-13
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Granted: 1985-02-26
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Expires: 2000-02-13
Abstract
Abstract Each time the operator is projecting the start or end of what is to become an audio scene, he presses a store switch, commanding storage of the current frame count, thereby defining all the audio scenes on the film one after the other, for subsequent recording work. Thereafter, during recording work, the projector is referenced to the start and end frame counts of one scene at a time, one scene after another, as the operator controls semi-automatic recording work on successive scenes. A green, red and yellow indicator lamp are arranged in left-to-right order. When the film is ahead of the start of the referenced scene only the green lamp is bright, when past the end of the scene only the yellow, when in the middle of the scene only the red, when at the exact start of the scene both the green and red, when at the exact end of the scene both the red and the yellow.
Inventors
- 👤 Gerd Mattes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:58
CPC Classifications
G; G03; G03B; G03B31/00; G03B31/02
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
150 words
A sound film editor for projecting motion picture film forwardly and rearwardly and informing a user of a position of a projected film frame relative to scene starts and scene ends, comprising: an optical projection system projecting images on the film; a drive motor driving the film forwardly and rearwardly; a frame counter counting each frame on the film as an image thereon is projected by the optical projection system; a memory in which a predetermined frame count may be stored by a user, the predetermined frame count indicating a one of a scene start and a scene end; and a display including indicator lamps arranged to cooperate with the frame counter and the memory and indicating when a count registered by the frame counter is lower than the predetermined frame count and further indicating when a count registered by the frame counter is higher than the predetermined frame count.
Claim 2
Dependent Claim
150 words
A sound film editor for projecting motion picture film forwardly and rearwardly and informing a user of a position of a projected film frame relative to scene starts and scene ends, comprising: an optical projection system projecting images on the film; a drive motor driving the film forwardly and rearwardly; a frame counter counting each frame on the film as an image thereon is projected by the optical projection system; a memory in which a predetermined frame count may be stored by a user, the predetermined frame count indicating a one of a scene start and a scene end; and a display including indicator lamps arranged to cooperate with the frame counter and the memory and indicating when a count registered by the frame counter is lower than the predetermined frame count and further indicating when a count registered by the frame counter is higher than the predetermined frame count.
Claim 3
Dependent Claim
113 words
The sound film editor defined by claim 1, wherein the memory can store a first predetermined frame count and a second predetermined frame count selected by a user, the first predetermined frame count being lower than the second predetermined frame count and corresponding to a scene start, and the second predetermined frame count corresponding to a scene end, and wherein the display indicator when the count registered by the frame count is less than the first predetermined frame count, equal to the first predetermined frame count, between the first predetermined frame count and the second predetermined frame count, equal to the second predetermined frame count, and greater than the second predetermined frame count.
Claim 4
Dependent Claim
15 words
The sound film editor defined by claim 2, wherein the display includes three indicator lamps.
References Cited (Backward Citations)
US3376093A
Cited
US3977776A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-02-26 | 1988-08-27 | 1989-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-02-26 | 1992-08-27 | 1993-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-02-26 | 1996-08-27 | 1997-02-26 | $7700.00 | Window Closed / Lapsed |