Modular video control system
First Claim
Patent Images
1. For use in a closed circuit television system for selectively coupling at least one of N video sources to one or more video output devices, the improvement comprising:
- a chassis adapted to receive a plurality of physically separate plug-in modules,at least two switching modules plugged into said chassis, each switching module including M input terminals, each of which receives video signals from one of said N video sources, where M is less than N, the total number of switching modules providing between them a total of at least N input terminals so that any of said N video sources may be coupled to said one or more video output devices, at least one of said switching modules including at least one output terminal for coupling said N video sources to said one or more video output devices,means for scanning at least some of said N video sources in a predetermined sequence, andmeans responsive to said scanning means for coupling the video signals from said N video sources sequentially to said at least one output device.
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Abstract
A modular video switching system for switching a video signal from one of many video cameras to a video monitor. The system includes one or more individual modules each containing a limited set of input channels. The modules can be cascaded with each other to permit scanning of the video signals from all modules on to a single video monitor. Also provision is made for modular camera controls, requiring only a single control for all cameras, using modular circuitry to rout the control signals to the appropriate camera.
44 Citations
11 Claims
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1. For use in a closed circuit television system for selectively coupling at least one of N video sources to one or more video output devices, the improvement comprising:
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a chassis adapted to receive a plurality of physically separate plug-in modules, at least two switching modules plugged into said chassis, each switching module including M input terminals, each of which receives video signals from one of said N video sources, where M is less than N, the total number of switching modules providing between them a total of at least N input terminals so that any of said N video sources may be coupled to said one or more video output devices, at least one of said switching modules including at least one output terminal for coupling said N video sources to said one or more video output devices, means for scanning at least some of said N video sources in a predetermined sequence, and means responsive to said scanning means for coupling the video signals from said N video sources sequentially to said at least one output device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. For use in a television surveillance system for selectively coupling one of N video cameras to one or more video monitors and for controlling the position of said cameras and the movement of the cameras lens, the improvement comprising:
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a chassis adapted to receive a plurality of physically separate plug-in modules, at least two switching modules plugged into said chassis, each of said switching moddules including M input terminals, each of which receives video signals from one of said cameras, where M is less than N, the total number of switching modules providing between them a total of at least N input terminals so that any of said N video cameras may be coupled to said one or more video output devices, and M switch means connected to respective ones of said input terminals, at least one of said switching modules including at least one output terminal for coupling said video cameras to said one or more video monitors, means for scanning said N video cameras in a predetermined sequence and coupling their video signals sequentially to at least one of said video monitors, each of said M switch means selectively connecting the video camera connected to its associated terminal to said scanning means or to said one or more video monitors, and at least one control module for controlling the position and lens movement of selected ones of said video cameras.
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Specification