Video surveillance system
First Claim
1. A video surveillance system comprising:
- a plurality of video cameras,means for modulating signals from each camera,means for multiplexing said modulated signals onto a path capable of carrying a plurality of video channels,a signal splitter which provides the signals on said path in parallel to a plurality of video displays each comprising a tuner and a display screen, anda computer connected to said tuners and comprising means for controlling at least one of said tuners so as to display on its display screen a sequence of images from different video cameras.
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Accused Products
Abstract
A video surveillance system is disclosed in which modulated signals from a plurality of video cameras are multiplexed onto a single path capable of carrying for example up to 36 video channels. One or more such communication paths are provided to a signal splitter which provides the paths to one or more video screens and tuners. The tuners are operated under computer control so as to sequence the display of information from the different video cameras. Advantageously, structure is also provided for recording the video display on a VCR when a display includes matters of interest. The computer is also responsive to alarm inputs to display on one or more screens the signals from video cameras in the area adjacent the alarm.
93 Citations
17 Claims
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1. A video surveillance system comprising:
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a plurality of video cameras, means for modulating signals from each camera, means for multiplexing said modulated signals onto a path capable of carrying a plurality of video channels, a signal splitter which provides the signals on said path in parallel to a plurality of video displays each comprising a tuner and a display screen, and a computer connected to said tuners and comprising means for controlling at least one of said tuners so as to display on its display screen a sequence of images from different video cameras. - View Dependent Claims (2, 3)
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4. In a predetermined surveillance area, a video surveillance system comprising:
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a plurality of surveillance video cameras, stationed at predetermined surveillance points; each of said cameras having a video output and being provided with means for modulating said video output at a predetermined frequency band; a signal path capable of carrying a plurality of modulated signals at different frequency bands; each of said modulating means being provided with connection means for connecting said modulating means to said signal path; a surveillance control station, said control station comprising selectable tuner means, demodulating means, and video display means, said tuner means being connected to said signal path, and said demodulating means being connected from said tuner means to said display means whereby adjustment of said selectable tuner means selects one of said predetermined frequency bands for demodulation and display on said video display means, thereby displaying on said video display means a selected surveillance point; and
a sequencing means, said sequencing means being provided with means for adjusting said selectable tuner so as to select one of said predetermined frequency bands, said sequencing correlating each of said predetermined frequency bands with a corresponding one of said surveillance points whereby the video signal generated by the camera at any surveillance point can be rapidly displayed on said video display means, said sequencing means also associating a time interval with each of said frequency bands and having means for arranging an order of frequency bands such that the video signal from each surveillance point can be displayed on said video display means in a predetermined order for a predetermined duration. - View Dependent Claims (5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method of video surveillance comprising the steps of
positioning a video camera at each of N number of preselected surveillance points; -
providing each video camera with a modulator for modulating the output of each camera at one of N number of different frequency bands; providing a first signal path capable of carrying N number of modulated signals in such a way that the first signal path extends in a circuit covering every one of said N number of surveillance points; connecting each one of the N number of modulators to said first signal path; choosing a monitoring point along said first signal path for a monitoring station; providing a monitoring station with a selectable first tuner capable of tuning each of said N number of frequency bands and connecting said selectable first tuner to said first signal path at said monitoring point; providing said monitoring station with a video display device and connecting said display device to said first tuner; associating each of said N number of frequency bands with one of said surveillance points; adjusting said first tuner to select a frequency band associated with the surveillance point to be dispalyed. - View Dependent Claims (15, 16, 17)
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Specification