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    • 5. 发明申请
    • IMAGE PROCESSING APPARATUS, IMAGE READING APPARATUS, AND IMAGE FORMING APPARATUS
    • 图像处理装置,图像读取装置和图像形成装置
    • US20070120989A1
    • 2007-05-31
    • US11535528
    • 2006-09-27
    • Takahiro MinamiSatoshi Morimoto
    • Takahiro MinamiSatoshi Morimoto
    • H04N9/07
    • H04N5/3577
    • An apparatus includes a CCD that reads a script image, an analog front end unit (AFE) that adjusts the offset and the gain of an image signal and A/D-converts the image signal, an image processing IC that applies image processing such as shading correction, input gamma correction, color correction, MTF correction, output gamma correction to the digital image signal, and a spread spectrum frequency IC that generates a spread spectrum clock based on a source oscillation clock, wherein the former block of the image processing unit is driven with the source oscillation clock and the latter block is driven with the spread spectrum clock. The image signal is transferred asynchronously from the former block to the latter block through an external memory controller.
    • 一种装置包括读取脚本图像的CCD,调整图像信号的偏移和增益并对图像信号进行A / D转换的模拟前端单元(AFE),应用图像处理的图像处理IC 阴影校正,输入伽马校正,颜色校正,MTF校正,对数字图像信号的输出伽马校正,以及基于源振荡时钟产生扩频时钟的扩频频率IC,其中图像处理单元的前一个块 用源振荡时钟驱动,后一个模块用扩频时钟驱动。 图像信号通过外部存储器控制器从前一块异步传输到后一块。
    • 8. 发明授权
    • Transfer clock converter for digital data
    • 传输时钟转换器用于数字数据
    • US5990811A
    • 1999-11-23
    • US7076
    • 1998-01-14
    • Satoshi Morimoto
    • Satoshi Morimoto
    • H03K19/0175G06F5/06H04L7/00H04L25/40H03M7/00
    • G06F5/06
    • A transfer clock converter for digital data of the present invention is a circuit for converting digital data synchronized with a first transfer clock into digital data synchronized with a second transfer clock and outputting the digital data, and includes a plurality of latching elements and a comparator-selector circuit. The comparator-selector circuit compares the output data from predetermined latching elements, selects output data to be output according to the result of the comparison, and outputs the selected output data. With this structure, it is possible to always output correct digital data without using a PLL circuit or the like, thereby significantly improving the reliability.
    • 本发明的用于数字数据的传送时钟转换器是用于将与第一传送时钟同步的数字数据转换为与第二传送时钟同步的数字数据并输出数字数据的电路,并且包括多个锁存元件和比较器 - 选择器电路。 比较器选择器电路比较来自预定锁存元件的输出数据,根据比较结果选择要输出的输出数据,并输出所选择的输出数据。 利用这种结构,可以在不使用PLL电路等的情况下始终输出正确的数字数据,从而显着提高可靠性。
    • 10. 发明授权
    • Image processing apparatus, image reading apparatus, and image forming apparatus
    • 图像处理装置,图像读取装置和图像形成装置
    • US07580588B2
    • 2009-08-25
    • US11535528
    • 2006-09-27
    • Takahiro MinamiSatoshi Morimoto
    • Takahiro MinamiSatoshi Morimoto
    • G06K9/40
    • H04N5/3577
    • An apparatus includes a CCD that reads a script image, an analog front end unit (AFE) that adjusts the offset and the gain of an image signal and A/D-converts the image signal, an image processing IC that applies image processing such as shading correction, input gamma correction, color correction, MTF correction, output gamma correction to the digital image signal, and a spread spectrum frequency IC that generates a spread spectrum clock based on a source oscillation clock, wherein the former block of the image processing unit is driven with the source oscillation clock and the latter block is driven with the spread spectrum clock. The image signal is transferred asynchronously from the former block to the latter block through an external memory controller.
    • 一种装置包括读取脚本图像的CCD,调整图像信号的偏移和增益并对图像信号进行A / D转换的模拟前端单元(AFE),应用图像处理的图像处理IC 阴影校正,输入伽马校正,颜色校正,MTF校正,对数字图像信号的输出伽马校正,以及基于源振荡时钟产生扩频时钟的扩频频率IC,其中图像处理单元的前一个块 用源振荡时钟驱动,后一个模块用扩频时钟驱动。 图像信号通过外部存储器控制器从前一块异步传输到后一块。