Method of detecting presence and motion for door control...

Details Method of detecting presence and motion for door control... Method of detecting presence and motion for door control...

2005-12-22

2011-11-29

Mehmood, Jennifer (Department: 2612)

Communications: electrical

Selective

Intelligence comparison for controlling

C382S115000, C348S156000, C348S143000

Reexamination Certificate

active

08068006

ABSTRACT:
A method of detecting presence and motion for door control devices, and a door control device implementing the method. On receipt of a door opening command (24), at least a portion of at least one image captured by a digital camera of the floor area is compressed (28) and the compressed image is compared (32) with at least one active presence criterion to inhibit or not inhibit the door closure command (34).

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patent: 2001/0021274 (2001-09-01), Lee
patent: 2002/0067259 (2002-06-01), Fufidio et al.
patent: 2005/0249382 (2005-11-01), Schwab et al.
patent: 1313321 (2003-05-01), None

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