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Motion detecting apparatus

  • US 5,339,104 A
  • Filed: 12/09/1992
  • Issued: 08/16/1994
  • Est. Priority Date: 12/09/1991
  • Status: Expired due to Term
First Claim
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1. A motion detecting apparatus, comprising:

  • an analog/digital converter for sampling a video signal input from a charge-coupled device camera and converting the sampled signal into a digital signal;

    a synchronous separator for separating said sampled video signal into a horizontal synchronous signal and a vertical synchronous signal;

    a system clock generator for generating a system clock signal;

    a microcomputer for controlling motion detection, a window/marker indication and window editing in response to key signals from a keyboard;

    a memory control and address generator for receiving the horizontal synchronous signal and vertical synchronous signal from said synchronous separator and outputting an address signal and a control signal for determining an effective sampling region and a motion comparing region under control of said microcomputer;

    a picture memory comparator for receiving the digital video signal from said analog/digital converter and detecting motion of an image by comparing previously input field data and currently input field data under control of said memory control and address generator;

    a level comparing and motion output controller for comparing the motion of the image from said picture memory and motion comparator with a limit value and a reference value and controlling a motion output;

    an alarm output controller for outputting an alarm control signal to an external controller when said level comparing and motion output controller indicates the motion of the image exceeds the limit value;

    a window control and marker indication controller for controlling a window and a marker indication in response to an address signal, for designating a magnitude of a window/marker of said memory control and address generator, and a window/marker selection control signal of the microcomputer upon receipt of the motion output from the level comparing and motion output controller; and

    a picture synthesizer for synthesizing the motion output from said window control and marker indication controller and the video signal and outputting a video signal indicated with a window or a marker.

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