Analog/digital conversion system, X-ray CT apparatus, and medical image imaging apparatus
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United States of America Patent
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May 29, 2018
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app pub date -
Aug 5, 2015
filing date -
Aug 18, 2014
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Abstract
In order to provide a highly precise analog/digital conversion system in which an output error of an AD converter is small, sampling is performed at a certain sampling period S from the start time of a measurement period TL to the (N−1)-th sampling when the measurement period TL does not correspond to the sampling period S multiplied by the number of samplings N, the N-th sampling is performed at a timing when a time interval between the (N−1)-th sampling and the N-th sampling is equal to the sampling period S multiplied by a predetermined coefficient k, and the k value is set to a non-integer optimum value evaluated in advance in accordance with the N value in order to minimize an error of the detection value of the AD converter.
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