Method and apparatus for applying overlay images

DC
  • US 5,523,791 A
  • Filed: 10/12/1993
  • Issued: 06/04/1996
  • Est. Priority Date: 10/12/1993
  • Status: Expired due to Term
First Claim
Patent Images

1. A method of interacting with a video image, comprising the steps of:

  • generating a first horizontal synchronization pulse train comprising a plurality of first pulses each having a first predetermined width;

    generating a second horizontal synchronization pulse train comprising a plurality of second pulses each having a second predetermined width different than said first predetermined width; and

    selecting said first and second horizontal pulses for each of a plurality of horizontal scan lines of said video image so as to alter the position of at least one horizontal scan line in said video image.

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