Locating items with flickering lamps

Details Locating items with flickering lamps Locating items with flickering lamps

2006-06-13

2006-06-13

Swarthout, Brent A. (Department: 2612)

Communications: electrical

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C235S472010, C340S005920, C705S028000

Reexamination Certificate

active

07061395

ABSTRACT:
Items, including lost items or items out of place, can be located by attaching flickering LED's to them and moving about with a detector that registers the presence of the desired item or items by decoding the flickers. The flickers can substitute for, or augment, ordinary printed bar codes, and can use the same encoding so that the temporal pattern of flickering corresponds to the spatial pattern of black and white stripes in the printed bar code. The flickering items can be registered from a distance and from among a large group of other flickering items.

REFERENCES:
patent: 5172113 (1992-12-01), Hamer
patent: 5214268 (1993-05-01), Doing
patent: 5380994 (1995-01-01), Ray
patent: 5760383 (1998-06-01), Heske, III
patent: 6089453 (2000-07-01), Kayser et al.
patent: 6476715 (2002-11-01), Bromer

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