Image capturing apparatus and control method thereof
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United States of America Patent
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Aug 23, 2016
Grant Date -
Apr 2, 2015
app pub date -
Sep 24, 2014
filing date -
Sep 27, 2013
priority date (Note) -
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Abstract
In an image capturing apparatus comprising an image sensor has focus detection pixels and image forming pixels, a calculation unit calculates first and second charge accumulation periods, a control unit reads out an image forming signal from the image forming pixels accumulated for the first charge accumulation period and a focus detection signal from the focus detection pixels accumulated for the second charge accumulation period, a display unit displays the image forming signal, and a focus control unit performs phase difference focus control process based on the focus detection signal. When the second charge accumulation period is longer than the first charge accumulation period, the control unit reads out the focus detection signal and the image forming signal in parallel, and sets a readout rate of the focus detection signal to be lower than that of the image forming signal.
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