Multiplex communications – Communication over free space – Combining or distributing information via frequency channels
Reexamination Certificate
2009-02-02
2011-11-15
Ngo, Ricky (Department: 2464)
Multiplex communications
Communication over free space
Combining or distributing information via frequency channels
C370S241000, C370S340000, C607S032000, C607S060000, C128S903000, C600S300000
Reexamination Certificate
active
08059628
ABSTRACT:
A low power multiple channel receiver mixing architecture for detecting wake-up signals over multiple communication channels in sniff processing performed in an implantable medical device (IMD). The architecture includes a direct conversion real receiver configured to scan a selected center channel and a Weaver receiver configured in parallel to the direct conversion real receiver to simultaneously scan side channels, together simultaneously detecting whether a wake-up signal is being received over the center and side channels with minimal power consumption. The architecture further utilizes a falsing protection algorithm that reduces power consumption during sniff operations by inhibiting the sniffing of channels likely to provide a false indication of a wake-up signal based the presence of unwanted signals on those channels. The falsing protection algorithm restricts those channels from sniff processing likely to provide a false indication of a wake-up signal, such that sniff processing can aborted, prevented, limited or otherwise altered to conserve power consumption.
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Bottomley Andrew M.
Bradley Peter
Corndorf Eric D.
Delight Guy A.
Denzene Quentin Scott
Bauer Stephen W.
Han Clemence
Medtronic Inc.
Ngo Ricky
Ostrom Michael J.
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