×

Video signal selection circuit

  • US 5,572,263 A
  • Filed: 11/30/1994
  • Issued: 11/05/1996
  • Est. Priority Date: 11/30/1993
  • Status: Expired due to Term
First Claim
Patent Images

1. A video signal selection circuit, comprising:

  • a predetermined number of video jack ports;

    a predetermined number of switching means, each respectively connected to an associated one of said video jack ports and being switched when a jack is connected to said associated video jack port;

    a micro-processing means, perceiving whether the jack is connected to said associated video jack port by determining if said respective switching means is switched, and outputting a corresponding control signal so that only a video signal from the connected jack is selected by said micro-processor for output.

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