Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Reexamination Certificate
2008-07-29
2008-07-29
Le, Que (Department: 2878)
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
C250S559290
Reexamination Certificate
active
07405390
ABSTRACT:
A plurality of optical beacons that emit light in respective light emitting patterns containing an ID code are distributed and installed in a space in which of a mobile body are moved. The mobile body is provided with a detection unit. The detection unit identifies at least three optical beacons according to the ID codes of the lights emitted according to the optical beacons and detects the direction of light emitted according to each of the identified optical beacons. Then, it detects the position of the mobile body according to the outcome of detection.
REFERENCES:
patent: 6498338 (2002-12-01), Oosterling et al.
patent: 6727511 (2004-04-01), Cusick et al.
patent: 2003-302469 (2003-10-01), None
Numata Akiko
Sano Masahito
Takanose Tsuyoshi
Bui-Pho Pascal M
Harness & Dickey & Pierce P.L.C.
Le Que
Toshiba Tec Kabushiki Kaisha
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