发明名称 Image reading apparatus
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.
申请公布号 US5020118(A) 申请公布日期 1991.05.28
申请号 US19880220959 申请日期 1988.06.21
申请人 CANON KABUSHIKI KAISHA 发明人 SUGIURA, SUSUMU
分类号 H04N1/409 主分类号 H04N1/409
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