Detection apparatus, image pickup apparatus, image pickup system, and control method of the detection apparatus
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United States of America Patent
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Dec 27, 2016
Grant Date -
Apr 23, 2015
app pub date -
Oct 14, 2014
filing date -
Oct 18, 2013
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Abstract
A detection apparatus configured to detect a focus state based on an output signal from an image pickup element capable of outputting an image pickup signal and a phase-difference detection signal includes, a first calculation unit configured to calculate information related to a first phase difference based on the phase-difference detection signal output from the image pickup element, a second calculation unit configured to calculate information related to a second phase difference based on the image pickup signal output from the image pickup element, and a detection unit configured to detect the focus state based on the information related to the first phase difference and the second phase difference.
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