发明名称 |
Image reading apparatus for reading a color image by irradiating light onto an object and photoelectrically converting light from the object |
摘要 |
This invention has as its object to provide an image reading apparatus which can prevent color mixing even when a linear image sensor in which charge transfer units are arranged to sandwich light-receiving units of different colors therebetween is used. In order to achieve the object, the image reading apparatus includes: a linear image sensor which is constituted by a plurality of image line sensors (301, 302, 303) respectively having a plurality of color filters, and transfer units (304-309) for transferring charges from the image line sensors, so that a charge obtained by a light-receiving/storage operation of at least one color image line sensor (302) is transferred to the transfer units (306, 307) via the image line sensor (303) of another color; and a subtraction circuit for subtracting a value obtained by multiplying a charge obtained by the light-receiving/storage operation of the image line sensor (303) of the other color with a correction coefficient from the charge transferred via the image line sensor (303) of the other color.
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申请公布号 |
US6078685(A) |
申请公布日期 |
2000.06.20 |
申请号 |
US19950516866 |
申请日期 |
1995.08.18 |
申请人 |
CANON KABUSHIKI KAISHA |
发明人 |
KAWAI, TAKASHI;SATO, HIROSHI;OHASHI, KAZUHITO |
分类号 |
H04N3/15;H04N9/04;(IPC1-7):G06K9/00 |
主分类号 |
H04N3/15 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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