Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
July 9, 2019
Patent Application Number
15520470
Date Filed
August 3, 2015
Patent Citations Received
Patent Primary Examiner
Patent abstract
Presence or absence of a photon is accurately detected in an image sensor with a simple configuration. A pixel circuit generates as an input voltage a signal voltage by photoelectrically converting light when the light is incident, and generates as the input voltage a predetermined reset voltage when light is not incident. A capacitor retains the predetermined reset voltage as a retained voltage. An amplification comparator amplifies a voltage difference between the input voltage and the retained voltage. A detection comparator outputs a result of determining whether or not the amplified voltage difference is higher than a predetermined value, as a detection signal indicating detected presence or absence of light incidence.
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