System and method for RF wake-up of implantable medical device
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United States of America Patent
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Dec 4, 2012
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app pub date -
Aug 26, 2011
filing date -
Apr 7, 2004
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Abstract
A telemetry system is presented for enabling radio-frequency (RF) communications between an implantable medical device and an external device in a manner which reduces the power requirements of the implantable device by duty cycling its circuitry. A wakeup scheme for the implantable device is provided in which the external device transmits a data segment containing a repeating sequence of special wakeup characters in order to establish a communications session with the implantable device. The wakeup scheme may be designed to operate in the context of a handshaking protocol for collision avoidance.
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