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Timing control for injecting a burst and data into a video signal

  • US 5,410,360 A
  • Filed: 06/14/1993
  • Issued: 04/25/1995
  • Est. Priority Date: 06/14/1991
  • Status: Expired due to Fees
First Claim
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1. A processor for combining a primary color video signal having active video lines separated by blanking intervals, and having a color burst with a secondary signal for subsequent transmission, the processor comprising:

  • a primary signal section providing the primary color video signal having active intervals and blanking intervals;

    a secondary signal section generating a secondary signal carrier at a frequency of a predetermined number of cycles per second for providing a carrier burst and being modulated by a rasterized version of the secondary signal for injecting into the primary color video signal; and

    a timing section for generating at least one timing signal to control the injection of the carrier burst into the primary color video signal for a predetermined time period such that the injection of the burst and the rasterized data is halted a predetermined period before each blanking interval.

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