| 摘要 |
PROBLEM TO BE SOLVED: To realize wide dynamic range analog to digital conversion at a high speed, with high sensitivity and with low power consumption on the same chip as that of CCDs. SOLUTION: An image pickup device is provided with an analog operating means which is provided with one or a plurality of columns of charge coupled devices and performs one or a plurality of additions, subtractions or multiplications of one column of charge coupled devices, a charge detecting means and detection value comparing means, and has an analog to digital converting means having a means which performs charge detection, compares a detection value with a reference value for one or a plurality of operations and converts the number of operations in which a magnitude relation to the reference value changes into a numerical character. The image pickup device can realize wide dynamic range charge detection at a high speed, with high sensitivity and with low power consumption, and an analog to digital converting means on the same element as that of an image pickup element or on two elements whose surfaces are electrically connected to each other. COPYRIGHT: (C)2005,JPO&NCIPI
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