×

Video detection system

  • US 4,896,206 A
  • Filed: 02/21/1989
  • Issued: 01/23/1990
  • Est. Priority Date: 12/14/1987
  • Status: Expired due to Fees
First Claim
Patent Images

1. A video detection system for detecting the common edge line of adjacent first and second portions of an article in a predetermined orientation, comprising:

  • video means for generating a video signal corresponding to a video image of the article, the video signal including a brightness level of changing magnitude in response to differences in a brightness of the image of the first and second portions of the article;

    comparison means in communication with the video means for comparing a reference brightness magnitude with the magnitude of the video signal brightness level and for providing a brightness status signal that assumes first and second states whenever the magnitude of the video signal brightness level is, respectively, greater than and less than the reference brightness magnitude; and

    detection point means for establishing within the video image a detection point at a selectable position that is independent of the orientation of the common edge line, the detection point means cooperating with the video means so that the detection point is movable from one of the first and second portions to the common edge line,whereby the state of the brightness status signal changes whenever the detection point moves from one of the first and second portions to the common edge line and the change in the state of the brightness status signal represents detection of the common edge line.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×