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Analog-to-digital converter, analog-to-digital converting method, solid-state image pickup device, and camera system
Analog-to-digital converter, analog-to-digital converting method, solid-state image pickup device, and camera system
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机译:模数转换器,模数转换方法,固态图像拾取装置和照相机系统
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摘要
An analog-to-digital converter that converts an analog input signal into a digital signal includes a comparator configured to compare a reference signal with an input signal and, if the input signal matches the reference signal, inverts an output; a counter configured to count a comparison time of the comparator; a control circuit configured to monitor the output of the comparator; a voltage generating circuit configured to generate, if a monitoring result obtained by the control circuit indicates that the output of the comparator is at a predetermined level, a direct current voltage in accordance with the monitoring resu and an analog adder configured to add the voltage generated by the voltage generating circuit to the input signal and supply a sum signal to an input terminal of the comparator.
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