Method and apparatus for remotely detecting presence

Optics: measuring and testing – Range or remote distance finding – Triangulation ranging to a point with two or more projected...

Reexamination Certificate

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C356S152200, C356S028000, C356S141100

Reexamination Certificate

active

07599044

ABSTRACT:
An apparatus for detecting a person's presence without requiring the person to provide auditory or tactile input. The invention may be incorporated into an electronic device, such as a desktop computer or notebook computer. The embodiment may employ a variety of radiation emissions to determine when a person enters the embodiment's field of detection and, in response to the person entering, activate the electronic device. This may prove particularly useful where, for example, the electronic device consumes significant power and/or may suffer deleterious effects if left active for too long.

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