Video monitoring apparatus
First Claim
Patent Images
1. A video monitoring apparatus comprising:
- a video camera for observing a scene and providing an analog signal thereof;
an analog-digital convertor for converting an analog signal from said camera consisting of n scanning lines to a digital signal,abridge and memory means for memorizing an abridged part of said digital signal abridged from said digital signal corresponding to said n scanning lines,picture range conversion means for converting a picture range by reading out memorized data from said memory means, to reconstitute a picture signal consisting of n scanning lines, anddisplay means for displaying video pictures produced by said picture range conversion means.
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Abstract
A video signal which is provided up by a conventional video camera is converted into a digital signal, and a necessary part of the digital signal is selected, is memorized and is displayed, and furthermore, two video images are picked up by two video cameras are connected in the shape of video signal side by side, and if necessary, disposition of one or both of the two video images are reversed in the horizontal direction.
342 Citations
7 Claims
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1. A video monitoring apparatus comprising:
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a video camera for observing a scene and providing an analog signal thereof; an analog-digital convertor for converting an analog signal from said camera consisting of n scanning lines to a digital signal, abridge and memory means for memorizing an abridged part of said digital signal abridged from said digital signal corresponding to said n scanning lines, picture range conversion means for converting a picture range by reading out memorized data from said memory means, to reconstitute a picture signal consisting of n scanning lines, and display means for displaying video pictures produced by said picture range conversion means. - View Dependent Claims (2, 4)
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3. A video monitoring apparatus comprising two video cameras,
a first analog-digital convertor for converting an analog video signal from a first of said video cameras to a first digital signal, a second analog-digital convertor for converting an analog video signal from a second of said video cameras to a second digital signal, first switch means for switching said first digital signal as a function of an odd numbered (2n-1) scanning line or an even numbered (2n) scanning line, second switch means for switching said second digital signal as a function of an odd numbered 2n-1) scanning line or an even numbered 2n) scanning line, a first line memory for memorizing said first digital signal provided through said first switch means during said scanning of an odd numbered scanning line, a second line memory for memorizing said first digital signal provided through said first switch means during said scanning of an even numbered scanning line, a third line memory for memorizing said second digital signal provided through said second switch means during said scanning of an odd numbered scanning line, a fourth line memory for memorizing said second digital signal provided through said second switch means during said scanning of an even numbered scanning line, a first adder for adding and issuing digital signal read out from said third line memory after read out of digital signal of said first line memory during said scanning of an even scanning line, a second adder adding and issuing digital signal read out from said fourth line memory after read out of digital signal of said second line memory during scanning of an odd numbered scanning line, a third adder adding and issuing digital signal of said second adder after issue of output digital signal of said first adder, and a display means for displaying video pictures from the output of said third adder.
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6. A video monitoring apparatus comprising,
a video camera for issuing a video signal by scanning lines corresponding to a two dimensional picture, an analog to digital convertor for converting said video signal from said video camera to a digital signal, a first line memory for memorizing the digital signal corresponding to picture elements of odd numbered scanning lines from a start of a field, a second line memory for memorizing the digital signal corresonding to picture elements of even numbered scanning lines from a start of the field, readout means for reading out data of said first line memory in reverse order to said memorizing during a memorizing period of said even numbered scanning lines, readout means for reading out data of said second line memory in reverse order during a memorizing period of said odd numbered scanning line, and a display means for displaying a video picture from the outputs of said first line memory and said second line memory controlled by said readout means.
Specification