×

Signal processors for transparent and simultaneous transmission and reception of a data signal in a video signal

  • US 5,587,743 A
  • Filed: 04/08/1994
  • Issued: 12/24/1996
  • Est. Priority Date: 06/14/1991
  • Status: Expired due to Fees
First Claim
Patent Images

1. A method of transmitting information, the method comprising:

  • receiving the information from a source;

    generating a carrier at an odd quarter, non-integral multiple of the frequency of a raster rate of a rasterized video signal, the rasterized video signal having a bandwidth having spectral energy having chrominance and luminance components;

    modulating the carrier based upon the received information so that the spectral energy of the modulated carrier is frequency interleaved with the chrominance and luminance components to provide a modulated signal;

    injecting the modulated signal into the video signal bandwidth; and

    transmitting the injected signal in a channel containing a signal format of said rasterized video signal.

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