Telecommunications – Transmitter and receiver at separate stations – Short range rf communication
Reexamination Certificate
2007-08-14
2007-08-14
Sobutka, Philip J. (Department: 2618)
Telecommunications
Transmitter and receiver at separate stations
Short range rf communication
C455S411000
Reexamination Certificate
active
11008759
ABSTRACT:
A security system for wireless devices such as mobile phones includes a wireless signal transmitter, and a signal strength detector and microprocessor associated with the wireless device being safeguarded. The microprocessor disables or locks the wireless device if the measurement by the detector of the strength of the signal transmitted by the wireless transmitter is less than a predetermined value, thereby indicating that there is more than a predetermined separation distance between the protected device and the transmitter, i.e., that, e.g., someone has taken the device. The disabled wireless device stays disabled until the measured signal strength is again greater than the predetermined value. Once this value is reached the device is automatically unlocked or enabled.
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Cingular Wireless II LLC
Gardner Groff Greenwald & Villanueva P.C.
Sobutka Philip J.
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