text: Patent US4944299 - High speed digital telemetry system for implantable device - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inAdvanced Patent SearchPatentsA high speed digital telemetry system (10) includes a transmitter (12) and a receiver (14), at least one of which is adapted for use in an implantable device. The transmitter includes a data encoder (14), modulator (16), transmitting coil (20), and transmitting coil drive circuit (18). The data encoder...http://www.google.com/patents/US4944299?utm_source=gb-gplus-sharePatent US4944299 - High speed digital telemetry system for implantable deviceAdvanced Patent SearchPublication numberUS4944299 APublication typeGrantApplication numberUS 07/391,080Publication dateJul 31, 1990Filing dateAug 8, 1989Priority dateAug 8, 1989Fee statusPaidAlso published asDE69033188D1, DE69033188T2, EP0412424A2, EP0412424A3, EP0412424B1Publication number07391080, 391080, US 4944299 A, US 4944299A, US-A-4944299, US4944299 A, US4944299AInventorsSergiu SilvianOriginal AssigneeSiemens-Pacesetter, Inc.Export CitationBiBTeX, EndNote, RefManPatent Citations (3), Referenced by (666), Classifications (19), Legal Events (6) External Links: USPTO, USPTO Assignment, EspacenetHigh speed digital telemetry system for implantable device
  In one embodiment, the present invention includes an implantable transmitter apparatus for transmitting digital binary data, comprising a sequence of input data bits, at a prescribed bit rate from an implantable device. The transmitter apparatus includes: (a) encoding means for converting the input sequence of data bits into an encoded binary data stream, comprising a sequence of encoded data bits, that includes an identifying mark when a prescribed correlation exits between the input data bits and the encoded data bits; (b) a transmitting coil circuit tuned to the prescribed bit rate; and (c) means for applying a carrier signal having a frequency equal to the prescribed bit rate to the transmitting coil circuit, including switching means for switching the phase of the carrier signal applied to the transmitting