Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
May 31, 2011
Patent Application Number
12342707
Date Filed
December 23, 2008
Patent Citations Received
Patent Primary Examiner
Patent abstract
It is an object of the present invention to provide a solid-state imaging device for enhancing accuracy of AD conversion and active switching of up-counting and down-counting in the asynchronous counter without limiting the AD conversion frequency. The solid-state imaging device according to the present invention includes an asynchronous counter having an up-counting mode in which up-counting is performed, a down-counting mode in which down-counting is performed, and a holding mode for switching operation settings between the up-counting and the down-counting while maintaining a count value held in the asynchronous counter.
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