Simultaneous radio frequency and magnetic field microprocessor reset circuit
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United States of America Patent
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-
Feb 16, 1993
Issued Date -
N/A
app pub date -
Dec 5, 1991
filing date -
Nov 13, 1989
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An implant for stimulating the vagus nerve receives commands over a radio frequency link. The implant disables a voltage convertor used in providing the stimulation signal at periodic intervals to monitor for communications attempts. The implant provides radio frequency marker pulses before providing stimulation signals of certain frequencies. During the providing of stimulation signals the implant monitors the voltage overhead present between the voltage source and the load and adjusts the overhead to a desired level. The implant changes the voltage applied to certain internal components during stimulation periods to allow full power operation during those intervals and reduced power levels at other intervals. The implant is reset by the placing a magnet in a given location in conjunction with the application of a radio frequency transmission for a given period.
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