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Low frequency digital comb filter system

  • US 4,464,675 A
  • Filed: 08/04/1982
  • Issued: 08/07/1984
  • Est. Priority Date: 08/04/1982
  • Status: Expired due to Fees
First Claim
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1. In a television signal processing system, including a source of sampled data video signals at a given data rate having first and second frequency interleaved signal components in a video passband, a comb filter system comprising:

  • a first bandpass filter having an input responsive to said sampled data video signals and an output at which filtered signal samples occupying a portion of said video passband are produced at said given data rate;

    a comb filter, responsive to said filtered signal samples, and operating at a reduced data rate which is less than said given data rate, for producing a comb filtered signal at said reduced data rate; and

    a second bandpass filter responsive to said comb filtered signal for producing a comb filtered signal at said given data rate which occupies a portion of said video passband.

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