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Telemetry receiver for implantable device, incorporating digital signal processing

  • US 5,466,246 A
  • Filed: 07/29/1994
  • Issued: 11/14/1995
  • Est. Priority Date: 07/29/1994
  • Status: Expired due to Term
First Claim
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1. Apparatus for receiving a modulated data signal transmitted from an implantable device, wherein the modulated data signal is modulated by a digital or an analog data signal in any of a plurality of distinct modulation modes, the apparatus comprising:

  • front-end receiving means for receiving the modulated data signal from the implantable device, the front-end receiving means including means for amplifying and antialias filtering the received signal;

    analog-to-digital converter means for sampling the amplified modulated data signal to produce a sequence of digitized samples; and

    digital signal processing means for filtering the sequence of digitized samples using at least one of a plurality of bandpass filters and for demodulating the filtered sequence of digitized samples using at least one of a plurality of demodulators, including an amplitude demodulator, a frequency demodulator, and a phase demodulator, to produce a demodulated data signal.

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