发明授权
- 专利标题： Image reading apparatus
- 专利标题（中）： 图像读取装置
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申请号： US220959申请日： 1988-06-21
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公开(公告)号： US5020118A公开(公告)日： 1991-05-28
- 发明人: Susumu Sugiura
- 申请人： Susumu Sugiura
- 申请人地址： JPX Tokyo
- 专利权人： Canon Kabushiki Kaisha
- 当前专利权人： Canon Kabushiki Kaisha
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX59-119895 19840613; JPX59-126331 19840621; JPX59-130180 19840626
- 主分类号： H04N1/409
- IPC分类号： H04N1/409
摘要：
There is disclosed an image reading apparatus capable of preparing unsharp mask data from an image with a simple structure. For this purpose there is employed a first line sensor with plural photoelectric converting elements, and a second line sensor with larger photoelectric converting elements of a greater length, both being arranged parallel and desired data being obtained by processing the signal from these sensors.
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