Communications: electrical – Condition responsive indicating system – With particular coupling link
Reexamination Certificate
2006-07-18
2006-07-18
Tweel, Jr., John (Department: 2636)
Communications: electrical
Condition responsive indicating system
With particular coupling link
C340S901000, C340S904000
Reexamination Certificate
active
07079024
ABSTRACT:
A presence detection system comprising, among other things, a radio transmitter and receiver is described herein. The transmitter includes a motion detection circuit, a microprocessor, and a radio frequency modulator. The motion detection circuit is configured to direct a motion detected signal to the microprocessor upon the transmitter being moved in a predetermined manner. The microprocessor is configured to generate an encoded message that includes a preamble denoting a beginning of the encoded message, an identification code denoting a type of transmitter, and a check message (such as a checksum) containing information about content of the encoded message. Finally, the radio frequency modulator is configured to modulate the encoded message at a transmitting frequency.
REFERENCES:
patent: 3967575 (1976-07-01), Coutts
patent: 4196412 (1980-04-01), Sluis et al.
patent: 6292112 (2001-09-01), Bader et al.
patent: 6411896 (2002-06-01), Shuman et al.
patent: 6469628 (2002-10-01), Richards et al.
patent: 6731202 (2004-05-01), Klaus
patent: 6759948 (2004-07-01), Grisham et al.
patent: 6917284 (2005-07-01), Grisham et al.
Dechert LLP
Garcia Guadalupe
Tweel , Jr. John
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