Biopresence based keyguard mechanism

Details Biopresence based keyguard mechanism Biopresence based keyguard mechanism

2007-06-01

2011-11-15

Zimmerman, Brian (Department: 2612)

Communications: electrical

Selective

Intelligence comparison for controlling

C455S411000

Reexamination Certificate

active

08058969

ABSTRACT:
A bio-presence based keyguard mechanism for a portable device detects a situation where both a bio-presence sensor and a pressure or displacement sensor are engaged, and then selectively removes an associated keypad from a locked state and places the keypad in an unlocked state. In accordance with one aspect, the keyguard mechanism employs a method for transforming the status of a portable device keypad from a locked state to an unlocked state. Within the method, a signal is received from a pressure or displacement sensor associated with a particular key of the keypad, when the keypad is in a locked state. It is then determined whether a signal is received from a bio-presence sensor associated with the particular key, or with a particular portion of the keypad, within an allotted time period, and if so, the status of the keypad is changed to an unlocked state.

REFERENCES:
patent: 5153572 (1992-10-01), Caldwell et al.
patent: 2005/0132180 (2005-06-01), Parker
patent: 2005/0253815 (2005-11-01), Blacklock et al.
patent: 2006/0227114 (2006-10-01), Geaghan et al.
patent: 2007/0049358 (2007-03-01), Kang et al.

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