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System for processing a video signal via series-connected high speed signal processing smart cards

  • US 6,035,037 A
  • Filed: 01/30/1997
  • Issued: 03/07/2000
  • Est. Priority Date: 08/04/1995
  • Status: Expired due to Term
First Claim
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1. A video signal processing system comprising:

  • a source of a video signal including first and second signal components representative of respective first and second video programs;

    said first and second signal components including control information for identifying said different respective video programs therein and for enabling access to said programs;

    coupling means for coupling said video signal to an input of a first smart card for coupling an output signal produced by said first smart card to an input of a second smart card and for receiving an output signal produced by said second smart card;

    said output signal from said first smart card being produced in response to said video signal and said output signal from said second smart card being produced in response to said output signal from said first smart card; and

    means responsive to said output signal from said second smart card for providing a signal suitable for coupling to an image display device for producing an image including a first image portion representative of said first video program and including a second image portion representative of said second video program.

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