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Video modulator arrangement

  • US 5,982,446 A
  • Filed: 10/15/1996
  • Issued: 11/09/1999
  • Est. Priority Date: 10/18/1995
  • Status: Expired due to Term
First Claim
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1. A video modulator arrangement comprising:

  • a single-ended to differential amplifier in which audio frequency signals are amplified;

    a first modulator circuit in which the amplified audio frequency signals are amplitude-modulated onto a sub-carrier signal;

    a combining circuit arrangement in which output signals from said first modulator circuit are combined with video signals;

    a second modulator circuit in which signals from said combining circuit arrangement are modulated onto a high frequency carrier signal; and

    high pass filter means connected between an output of the first modulator circuit and the combining circuit arrangement.

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