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Automatic characterization of a television signal

  • US 6,064,449 A
  • Filed: 10/31/1997
  • Issued: 05/16/2000
  • Est. Priority Date: 10/31/1997
  • Status: Expired due to Term
First Claim
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1. In a processing system that is configured to receive a plurality of television signal types including standard cable (STD), incremental coherent carrier (IRC) and harmonically related carrier (HRC), a method of characterizing an input television signal, the method comprising the following:

  • a step for tuning to a plurality of television channels in the range of from channel 2 to channel 13;

    for each of the plurality of the television channels tuned to in the step for tuning, a step for determining which of the plurality of television signal types that the television channel frequency is closest to;

    a step for maintaining a counter corresponding to each of the plurality of television signal types;

    a step for incrementing a counter corresponding to a television signal type when the step for determining determines that a television channel corresponds to the television signal type; and

    a step for automatically identifying the input television signal type as that having the highest counter.

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