Radiant energy – Photocells; circuits and apparatus – Photocell controlled circuit
Reexamination Certificate
2009-01-27
2010-06-22
Epps, Georgia Y (Department: 2878)
Radiant energy
Photocells; circuits and apparatus
Photocell controlled circuit
C250S208100, C348S308000, C257S308000
Reexamination Certificate
active
07741593
ABSTRACT:
A photoelectric conversion device comprises: a clipping unit including a MOS transistor which has a source connected to a signal line and a drain being connected to a power supply, and the clipping unit clipping an electric potential of the signal line to an electric potential corresponding to an electric potential of the source; a holding capacitance which has a first electrode and a second electrode, the first electrode being connected to a gate of the MOS transistor, and the holding capacitance holding at least a voltage transferred to the signal line while the charge-voltage converter has been reset; and a shift unit which shifts an electric potential of the second electrode in a direction such that the electric potential of the second electrode comes close to a level to be transferred to the signal line while the charge-voltage converter has been reset.
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Itano Tetsuya
Iwata Koichiro
Kato Satoshi
Sakurai Katsuhito
Shinohara Mahito
Canon Kabushiki Kaisha
Epps Georgia Y
Fitzpatrick ,Cella, Harper & Scinto
Williams Don
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