US4051524A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sequential video switching system
Assignee: QSI SYSTEMS Inc
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Filing: 1976-05-07
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Granted: 1977-09-27
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Expires: 1996-05-07
Abstract
Abstract A video surveillance system having a plurality of video cameras and means for reproducing the scenes viewed by a selected by one of the cameras. A switch selectively connects the cameras to the reproducing means. A counter generates a sequence of signals wherein each signal corresponds to one of the cameras. The counter signals are applied to the switch to select the corresponding camera and apply its output to the reproducing means. The counter signals are also applied to a character generator which generates characters identifying the selected camera for display at a selected location in the reproduced scene.
Inventors
- 👤 Larry K. Baxter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:15
CPC Classifications
H; H04; H04N; H04N7/00; H04N7/18; H04N7/181; G; G08; G08B; G08B13/00; G08B13/18; G08B13/189; G08B13/194; G08B13/196; G08B13/19639; G08B13/19645; G08B13/19665; G08B13/19671; G08B13/19673
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
160 words
A video surveillance system comprising A. two or more video cameras, each camera generating a video signal corresponding to the scene viewed by that camera, B. means responsive to the video signals for reproducing the scenes viewed by the cameras, C. counter means for generating a sequence of counter signals, each signal corresponding to one of said video cameras, D. switching means connected between the cameras and the reproducing means for automatically applying the video signals from the cameras to the reproducing means in response to the counter signals for a selected time interval and in a selected sequence so that the reproducing means can reproduce the scenes viewed by said cameras during said time intervals and in said sequence, E. means for generating, in response to the counter signals, video signals representing the characters identifying the respective video cameras, and G. means whereby the reproducing means reproduce the camera identifying characters at a selected location in the reproduced scene.
Claim 2
Dependent Claim
160 words
A video surveillance system comprising A. two or more video cameras, each camera generating a video signal corresponding to the scene viewed by that camera, B. means responsive to the video signals for reproducing the scenes viewed by the cameras, C. counter means for generating a sequence of counter signals, each signal corresponding to one of said video cameras, D. switching means connected between the cameras and the reproducing means for automatically applying the video signals from the cameras to the reproducing means in response to the counter signals for a selected time interval and in a selected sequence so that the reproducing means can reproduce the scenes viewed by said cameras during said time intervals and in said sequence, E. means for generating, in response to the counter signals, video signals representing the characters identifying the respective video cameras, and G. means whereby the reproducing means reproduce the camera identifying characters at a selected location in the reproduced scene.
Claim 3
Dependent Claim
29 words
The system defined in claim 1 and further including means for adjusting the intensity of the characters relative to the intensity of the scenes reproduced by the reproducing means.
Claim 4
Dependent Claim
23 words
The system defined in claim 1 and further including means for controlling the position of said character location in the scene reproducing means.
Claim 5
Dependent Claim
34 words
The system defined in claim 1 and further including manually operated means for controlling the switching means so that the video signal from any of the cameras is applied constantly to the reproducing means.
Claim 6
Dependent Claim
36 words
The system defined in claim 1 and further including indicating means responsive to the counter signals for indicating which camera video signal is being applied to the reproducing means at any given time in the sequence.
References Cited (Backward Citations)
US3686434A
Cited
US3935380A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-09-26 | 1981-03-28 | 1981-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-26 | 1985-03-28 | 1985-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-26 | 1989-03-28 | 1989-09-27 | $7700.00 | Window Closed / Lapsed |