×

Web defect continuous surveillance system

  • US 5,239,376 A
  • Filed: 02/11/1992
  • Issued: 08/24/1993
  • Est. Priority Date: 02/11/1992
  • Status: Expired due to Fees
First Claim
Patent Images

1. A video surveillance system for monitoring a continuous web of material navigating a paper making machine comprising:

  • a plurality of video cameras for the continuous monitoring of the web arranged in pairs, each of said pairs addressing a different location of interest along the paper making machine, each of said cameras being adapted to receive and operate using an external sync signal and produce a video output signal;

    a plurality of video image splitters each of which is for splitting the video output signal from each said pair of cameras;

    a plurality of video recorders each of which is for recording and playing back the split video output signals from each of said video image splitters;

    a plurality of video monitors each of which is for displaying a sequence of split-screen images from said each pair of video cameras;

    synchronization means, including synchronization signal generating means for generating a synchronization signal for the operation of all the cameras;

    means for receiving and responding to an independent alerting input signal indicating the occurrence of an event to be reviewed;

    wherein the means for responding to the alerting input signal includes means for causing the cameras and recorders to cease operation after a predetermined time and rewind the videotape in the recorders to a point corresponding to a predetermined time before the alerting input signal was received so that the event can thereafter be immediately reviewed; and

    control means including computer means for controlling the operation of the system.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×