Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
December 9, 2008
Patent Application Number
10997488
Date Filed
November 24, 2004
Patent Primary Examiner
Patent abstract
A circuit for detecting light comprising: a) a light-integrating photosensor circuit responsive to light for producing a variable voltage signal representing the accumulation of the light over time; and b) a measurement circuit for receiving a time measurement signal and the variable voltage signal to produce an output value representing the time required for the variable voltage signal to reach a predetermined voltage level, wherein the output value is proportional to the light accumulated during the required time.
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