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Upconverter for a television signal headend distribution center handling analog and digital signals and method of making and using the same

  • US 6,567,132 B1
  • Filed: 03/10/1999
  • Issued: 05/20/2003
  • Est. Priority Date: 03/10/1999
  • Status: Expired due to Term
First Claim
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1. An upconverter for converting an IF television signal to a VHF or UHF signal, said upconverter processing either digital or analog television signals, said upconverter comprising:

  • an upconversion circuit for receiving said IF television signal and outputting a converted television signal; and

    a reference signal circuit for supplying a reference signal to a modulator, said modulator being external to said upconverter, said reference signal circuit generating a first reference signal when said IF television signal is an analog signal and a second reference signal, different from said first reference signal, when said IF television signal is a digital signal.

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