Imaging element, gain control method, program, and electronic device
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United States of America Patent
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Jan 23, 2018
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N/A
app pub date -
Apr 3, 2015
filing date -
Apr 16, 2014
priority date (Note) -
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Abstract
The present disclosure relates to an imaging element, a gain control method, a program, and an electronic device that can capture an image with a high image quality or a high dynamic range with lower power consumption. The imaging element includes: an A/D conversion unit configured to A/D-convert a pixel signal outputted from a pixel; and a reference signal generation unit. The reference signal generation unit includes a prescribed number of pairs of transistors forming a current mirror circuit, and a switching unit configured to switch the number of transistors connected to the current mirror circuit. The switching unit is controlled so as to reduce the number of transistors connected to the current mirror circuit when the pixel signal is A/D-converted to a high gain. The present technology can be applied to a CMOS image sensor, for example.
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