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Multi-channel sonic receiver with combined time-gain control and heterodyne inputs

  • US 4,378,596 A
  • Filed: 03/01/1982
  • Issued: 03/29/1983
  • Est. Priority Date: 07/25/1980
  • Status: Expired due to Term
First Claim
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1. A multiple channel sonic beam receiver for observing internal organs and other medical applications comprising:

  • a plurality of signal processing channels, each channel comprising;

    (i) a transducer;

    (ii) a first amplifier electrically coupled to said transducer and having an output;

    (iii) a first analog multiplier electrically coupled to the output of said first amplifier, and having an output;

    (iv) a second amplifier coupled to the output of said first analog multiplier and having an output;

    a scan control coupled to the outputs of each of said second amplifiers;

    a detector coupled to said scan control for detecting signals therefrom;

    an output display coupled to said detector for displaying signals received therefrom;

    a time gain control generator having an output for generating a time gain control signal;

    a superheterodyne generator having an output for generating a superheterodyne signal;

    a second analog multiplier having an input coupled to said output of said time gain conrol generator and to the output of said superheterodyne generator and having an output generating a heterodyne signal modulated by the time gain control signal, the output of said second analog multiplier electrically coupled to each of said first analog multipliers.

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