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Computer system with motion-triggered alarm procedure

  • US 6,359,560 B1
  • Filed: 11/12/1999
  • Issued: 03/19/2002
  • Est. Priority Date: 11/12/1998
  • Status: Expired due to Term
First Claim
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1. A computer system, comprising:

  • a video input device to generate video data representing a field of view in front of the video input device;

    a computer connected to the video input device, the computer comprising;

    a buffer configured to record a video clip of the field of view in front of the video input device; and

    a video processing module connected to the buffer and the video input device, the video processing module comprising a video capture device to encode the video data in consecutive frames of varying size, and a signal processing module, the signal processing module configured to process the encoded video data in order to calculate an average value of the size of the encoded video data, and to generate an alarm signal if the average value exceeds a predetermined threshold value, the alarm signal indicating that sufficient motion has been detected in front of the video input device.

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