High speed digital telemetry system for implantable devices

摘要: A high speed digital telemetry system (10) includes a transmitter (12) and receiver (14), at least one of which is adapted for use in an implantable device. The data encoder modulator (16), transmitting coil (20), drive circuit (18). examines prescribed incoming bits prior encoded bits, generating stream (36) that transition only when correlation noted amongst the examined bits. modulates carrier signal (34) with stream, causing phase reversal each stream. applies modulated (38) to coil. receiving (22) associated amplifier (24) bandpass filter (26) detecting transmitted carrier. centered frequency carrier, passing no reversals are present. This results on-off An AM detector (28) detects present it not, appropriate decision logic (30) suitable acceptance criteria detected define received binary data.