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    • 9. 发明授权
    • Image reading apparatus
    • 图像读取装置
    • US5371613A
    • 1994-12-06
    • US838968
    • 1992-02-21
    • Shinobu ArimotoHisakazu Okubo
    • Shinobu ArimotoHisakazu Okubo
    • H04N1/401G06K9/00H04N1/40
    • H04N1/401
    • An image reader comprises a platen on which an original is to be placed, a read unit for reading an image of the original placed on the platen, a first standard member having even density, a second standard member having even density and provided at a position different from the first standard member, a correction unit for correcting unevenness of a video signal resulted from reading the image of the original by the read unit on the basis of a first standard signal resulted from reading the first standard member by the read unit, and a compensation unit for compensating correction operation made by the correction unit on the basis of a second standard signal resulted from reading the second standard member by the read unit. The reader may also comprise an authorization unit for authorizing the compensation operation by the compensation unit. With the reader, unevenness of the video signal is always automatically corrected with satisfactory results.
    • 图像读取器包括其上要放置原件的压板,用于读取放置在压板上的原稿的图像的读取单元,具有均匀密度的第一标准构件,具有均匀密度的第二标准构件,并且设置在位置 基于由读取单元读取第一标准构件而得到的第一标准信号,由读取单元读取原稿的图像而产生的视频信号的不均匀性的校正单元,以及 补偿单元,用于基于由读取单元读取第二标准构件而产生的第二标准信号来补偿由校正单元进行的校正操作。 读取器还可以包括授权单元,用于由补偿单元授权补偿操作。 对于读写器,视频信号的不均匀性总是自动校正,结果令人满意。
    • 10. 发明授权
    • Processing apparatus using selectable period triangular or sawtooth waves
    • 使用可选择的周期三角形或锯齿波的处理装置
    • US4989098A
    • 1991-01-29
    • US276935
    • 1988-11-28
    • Shinobu Arimoto
    • Shinobu Arimoto
    • G03G15/04H03K7/08H04N1/405
    • H04N1/4056
    • An image processing apparatus includes an input unit for inputting an image signal, a conversion unit for converting the image signal input from the input unit and outputting the converted image signal, and an output unit for outputting a pulse-width modulation signal based on the converted image signal output from the conversion unit. The output unit is operated in a fixed period processing mode regardless of an output characteristic of the pulse-width modulation signal, and outputs the pulse-width modulation signal. The conversion unit switches a conversion mode of the input image signal in association with the output characteristic of the pulse-width modulation signal.
    • 一种图像处理装置,包括用于输入图像信号的输入单元,转换单元,用于转换从输入单元输入的图像信号并输出​​转换的图像信号;以及输出单元,用于输出基于转换的图像信号的脉冲宽度调制信号 从转换单元输出的图像信号。 输出单元在固定周期处理模式下操作,而不管脉冲宽度调制信号的输出特性如何,并输出脉宽调制信号。 转换单元与脉冲宽度调制信号的输出特性相关联地切换输入图像信号的转换模式。