Multiple security video display
First Claim
Patent Images
1. Multiple video monitoring apparatus, comprising:
- a plurality n (n being an integer greater than
1) of video cameras producing respective signals;
selection switching means for selecting k (k being a positive integer less than n) of the camera signals;
a picture memory;
a plurality n+k of image compression circuits, the first n of which have the n signals from the cameras coupled directly to them and feed the first n zones of the picture memory and the last k of which have the signals from the selection switching means coupled to them and feed the last k zones of the picture memory; and
a monitor coupled to the picture memory to display the first n zones of the memory at a common aspect ratio and with a common first size, and the last k zones at the same common aspect ratio as the first n zones and with a common last size larger than the common first size of the first n zones.
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Abstract
Monitoring apparatus for a security system comprises a monitor 21 and twelve video cameras C1 to C12. An effects unit 20 includes a buffer memory 24 and a set of 13 video compression units 23. Twelve of these units generate twelve zones of small size for displaying small complete images on the monitor from the video camera outputs, and the 13th generates a central zone of larger size. Selection means 25 select any desired one of the camera outputs for display as the large image.
234 Citations
16 Claims
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1. Multiple video monitoring apparatus, comprising:
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a plurality n (n being an integer greater than
1) of video cameras producing respective signals;selection switching means for selecting k (k being a positive integer less than n) of the camera signals; a picture memory; a plurality n+k of image compression circuits, the first n of which have the n signals from the cameras coupled directly to them and feed the first n zones of the picture memory and the last k of which have the signals from the selection switching means coupled to them and feed the last k zones of the picture memory; and a monitor coupled to the picture memory to display the first n zones of the memory at a common aspect ratio and with a common first size, and the last k zones at the same common aspect ratio as the first n zones and with a common last size larger than the common first size of the first n zones. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. Multiple video monitoring apparatus, comprising:
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a plurality n (n being an integer greater than
1) of video cameras producing respective camera signals;selection switching means for selecting k (k being a positive integer less than n) of the camera signals; a picture memory; a plurality n+k of image compression circuits, n first image compression circuits of the image compression circuits being directly coupled to n of the camera signals from the video cameras and feeding the n first zones of the picture memory and k last image compression circuits of the image compression circuits being coupled to k of the camera signals from the selection switching means and feeding the k last zones of the picture memory; and a monitor coupled to the picture memory to display the n+k zones thereof, all with the same aspect ratio, the n first zones of the zones being all of one size, and the k last zones of the zones being all of another size that is larger than the size of the n first zones.
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Specification