Communications: directive radio wave systems and devices (e.g. – Presence detection only – By motion detection
Reexamination Certificate
2011-04-12
2011-04-12
Tarcza, Thomas H (Department: 3662)
Communications: directive radio wave systems and devices (e.g.,
Presence detection only
By motion detection
C342S027000, C342S192000, C342S195000
Reexamination Certificate
active
07924212
ABSTRACT:
A method of detecting human presence includes using a radar sensor to monitor a space, and receiving an output signal from the radar sensor. A Fourier transform is performed on the output signal to produce a signal spectrum. It is decided whether the output signal is indicative of human activity dependent upon at least one acoustic feature of the signal spectrum and at least one spectral feature of the signal spectrum.
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patent: 2007073173 (2007-06-01), None
Benitez Diego
Jin Zhaozhang
Brainard Timothy A
Robert & Bosch GmbH
Swedo Keith J.
Taft Stettinius & Hollister LLP
Tarcza Thomas H
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