Joseph E. Bange,Allan T. Koshiol,Karen M. Kramer,Paul Holmquist,Thomas J. Harris
申请号：
US13218672
公开号：
US08326424B2
申请日:
2011.08.26
申请国别(地区):
US
年份:
2012
代理人:
摘要：
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.
