Image input apparatus
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Abstract
An image input apparatus has an image sensor for photoelectrically converting image information of an object into an electric signal and outputting the signal, and a correction circuit for adjusting a fluctuation of offset components generated during photoelectric conversion contained in the signal output from the image sensor to correct the offset components. Images of good quality can be obtained by correcting the offset components contained in the signal output from the image sensor.
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Citations
50 Claims
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1-36. -36. (canceled)
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37. An image input apparatus comprising:
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a photoelectric conversion unit adapted to acquire image information of an object from a plurality of divided areas and to output signals from each of a plurality of output units corresponding to respective ones of the areas, wherein each of the areas includes a plurality of effective pixels and a plurality of non-image pixels; and
a correcting unit adapted to correct offset components contained in the signals output from each of the output units during a period of acquiring the image information, in accordance with a first signal output from the plurality of effective pixels during a period other than the image information acquiring, a second signal output from the plurality of non-image pixels during the period other than the image information acquiring, and a third signal output from the plurality of non-image pixels during the period of acquiring image information. - View Dependent Claims (38, 39, 40)
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41. An image processing method of processing signals output from a photoelectric conversion unit adapted to acquire image information of an object from a plurality of divided areas and to output the signals from each of a plurality of output units corresponding to respective ones of the areas, wherein each of the areas includes a plurality of effective pixels and a plurality of non-image pixels, said method comprising:
correcting offset components contained in the signals output from each of the output units during a period of acquiring the image information, in accordance with a first signal output from the plurality of effective pixels during a period other than the image information acquiring, a second signal output from the plurality of non-image pixels during the period other than the image information acquiring, and a third signal output from the plurality of non-image pixels during the period of acquiring image information.
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42. A storage medium storing a program for processing signals output from a photoelectric conversion unit adapted to acquire image information of an object from a plurality of divided areas and to output the signals from each of a plurality of output units corresponding to respective ones of the areas, wherein each of the areas includes a plurality of effective pixels and a plurality of non-image pixels, said program comprising:
a code of correcting offset components contained in the signals output from each of the output units during a period of acquiring the image information, in accordance with a first signal output from the plurality of effective pixels during a period other than the image information acquiring, a second signal output from the plurality of non-image pixels during the period other than the image information acquiring, and a third signal output from the plurality of non-image pixels during the period of acquiring image information.
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43. An image input apparatus comprising:
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a photoelectric conversion unit adapted to acquire image information of an object from a plurality of divided areas and to output signals from each of a plurality of output units corresponding to respective ones of the areas, wherein each of the areas includes a plurality of effective pixels and a plurality of non-image pixels; and
a correcting unit adapted to correct offset components contained in the signals output from each of the output units during a period of acquiring image information, in accordance with a first signal output from the plurality of effective pixels during a period other than the image information acquiring, a second signal output from the plurality of non-image pixels during the period of acquiring the image information, and an average of the second signal. - View Dependent Claims (44, 45, 46, 47, 48)
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49. An image processing method of processing signals output from a photoelectric conversion unit adapted to acquire image information of an object from a plurality of divided areas and to output the signals from each of a plurality of output units corresponding to respective ones of the areas, wherein each of the areas includes a plurality of effective pixels and a plurality of non-image pixels, said method comprising:
correcting offset components contained in the signals output from each of the output units during a period of acquiring image information, in accordance with a first signal output from the plurality of effective pixels during a period other than the image information acquiring, a second signal output from the plurality of non-image pixels during the period of acquiring the image information, and an average of the second signal.
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50. A storage medium storing a program for processing signals output from a photoelectric conversion unit adapted to acquire image information of an object from a plurality of divided areas and to output the signals from each of a plurality of output units corresponding to respective ones of the areas, wherein each of the areas includes a plurality of effective pixels and a plurality of non-image pixels, said program comprising:
a code of correcting offset components contained in the signals output from each of the output units during a period of acquiring image information, in accordance with a first signal output from the plurality of effective pixels during a period other than the image information acquiring, a second signal output from the plurality of non-image pixels during the period of acquiring the image information, and an average of the second signal.
Specification