Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Reexamination Certificate
2006-05-16
2006-05-16
Pyo, Kevin (Department: 2878)
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
C250S236000, C347S237000, C347S246000, C347S250000
Reexamination Certificate
active
07045771
ABSTRACT:
According to an aspect of the present invention, a light beam scanning apparatus comprises light emitting unit for emitting a light beam, scanning control unit for controlling scanning of the light beam, light quantity detecting unit for detecting the quantity of light in the light beam, light quantity control signal output unit for outputting a light quantity control signal that performs control such that the quantity of light in the light beam is kept fixed on the basis of a result of detection of the quantity of light in the light beam, and light emission control unit for controlling a light emission timing for the light beam on the basis of image data and controlling the quantity of light in the light beam on the basis of the light quantity control signal while the light emission timing is being controlled.
REFERENCES:
patent: 6344866 (2002-02-01), Komiya et al.
patent: 6509921 (2003-01-01), Komiya et al.
patent: 6549265 (2003-04-01), Sakakibara et al.
patent: 2001-88344 (2001-04-01), None
patent: 2002-307751 (2002-10-01), None
Inagawa Yuji
Ishikawa Daisuke
Komiya Kenichi
Tanimoto Koji
Foley & Lardner LLP
Kabushiki Kaisha Toshiba
Pyo Kevin
Toshiba TEC Kabushiki Kaisha
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