Patent ID: 8538544
Filing Date: 2013-09-17
Classification: A61N

Abstract:
1. An implantable electronic device, comprising: a first radio receiver for receiving telemetry data, said first radio receiver having a wake mode and a sleep mode, and being configured to be in said sleep mode unless woken up by a triggering event; a second radio receiver with very low power consumption compared to said first radio receiver; a control unit coupled to the second radio receiver and configured to periodically turn on the second radio receiver for a listen window to listen for a radio frequency signal containing a wake-up message indicating an external device wishes to establish contact, wherein the listen window is shorter than the duration of a complete wake-up message; an analyzer forming part of the second radio receiver and configured to verify the properties of a received portion of the wake-up message in a listen window by matching the received portion of said wake-up message with predetermined properties, and said analyzer, in response to a match of the received portion of said incoming wake-up message with said predetermined properties, prolonging the listen window to receive a remaining portion of the incoming wake-up message for as long as the received portion of said incoming wake-up message continues to match said predetermined properties until the complete wake-up message is received; and said analyzer further being configured to create said triggering event to place said first radio receiver in the wake mode to receive incoming telemetry data in response to the detection of the complete wake-up message by the second radio receiver.