Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Kuniyuki Tani0
Atsushi Wada0
Hajime Takashima0
Date of Patent
June 29, 2010
0Patent Application Number
118642860
Date Filed
September 28, 2007
0Patent Primary Examiner
Patent abstract
In a photo detecting apparatus, a first capacitance is caused by a photo detecting element and the first capacitance is charged or discharged by current flowing through the photo detecting element. A second capacitance is connected in parallel with the photo detecting element, and the second capacitance charges or discharges an electric charge overflowing from the first capacitance. A current control element is connected to a terminal of the second capacitance on a side where the electric charge flows in, and the current control element delivers a current to cancel part of an electric charge when the electric charge overflowing from the first capacitance is stored in the second capacitance.
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