US4811102A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hybrid wipe generator
Assignee: Grass Valley USA LLC
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Filing: 1987-03-26
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Granted: 1989-03-07
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Expires: 2007-03-26
Abstract
Abstract Video special effects apparatus comprises both an analog pattern generator and a digital pattern generator. The analog control signal generated by the analog pattern generator and the digital control signal generated by the digital pattern generator are combined to provide a hybrid control signal, and the hybrid control signal is used to control the wipe between two video signals.
Inventors
- 👤 Daniel J. Chaplin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:33
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/222; H04N5/262; H04N5/265
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
112 words
Video effects apparatus comprising: an analog pattern generator for generating an analog control signal, a digital pattern generator for generating a digital control signal, means for combining the analog control signal and the digital control signal to provide a hybrid control signal, and mixer means having a first video signal input terminal for receiving a first input video signal, a second video signal input terminal for receiving a second input video signal, a control input terminal connected to receive the hybrid control signal, and an output terminal for providing an output video signal which is formed by combining the first and second input video signals in dependence upon the hybrid control signal.
Claim 2
Dependent Claim
112 words
Video effects apparatus comprising: an analog pattern generator for generating an analog control signal, a digital pattern generator for generating a digital control signal, means for combining the analog control signal and the digital control signal to provide a hybrid control signal, and mixer means having a first video signal input terminal for receiving a first input video signal, a second video signal input terminal for receiving a second input video signal, a control input terminal connected to receive the hybrid control signal, and an output terminal for providing an output video signal which is formed by combining the first and second input video signals in dependence upon the hybrid control signal.
Claim 3
Dependent Claim
23 words
Apparatus according to claim 1, wherein the means for combining the analog control signal and the digital control signal comprise a summing network.
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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) | 1992-03-06 | 1992-09-05 | 1993-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-03-06 | 1996-09-05 | 1997-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-03-06 | 2000-09-05 | 2001-03-07 | $7700.00 | Window Closed / Lapsed |