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1. 发明申请

US20090059324A1 SIGNAL GENERATOR, IMAGE READING DEVICE, AND IMAGE FORMING APPARATUS 有权
标题翻译：信号发生器，图像读取装置和图像形成装置
公开(公告)号：US20090059324A1
公开(公告)日：2009-03-05
申请号：US12204355
申请日：2008-09-04
申请人： Masaki NAGASE , Tohru Kanno
发明人： Masaki NAGASE , Tohru Kanno
IPC分类号： H04N1/46
CPC分类号： H04N1/028 , H03K5/135
摘要： A clock-signal generating unit generates temporally-continuous clock signals. A spread-spectrum clock-signal generating unit generates a spread-spectrum clock signal by modulating a frequency spectrum of a clock signal generated by the clock-signal generating unit. A signal delaying unit generates a fixed delay unaffected by a spread spectrum from the spread-spectrum clock signal generated by the spread-spectrum clock-signal generating unit, and delays a phase of the spread-spectrum clock signal based on an amount of the fixed delay.
摘要翻译：时钟信号产生单元产生时间连续的时钟信号。扩频时钟信号生成单元通过调制由时钟信号生成单元生成的时钟信号的频谱来生成扩频时钟信号。信号延迟单元从扩频时钟信号产生单元生成的扩频时钟信号产生不受扩频影响的固定延迟，并且基于固定时钟信号的量来延迟扩频时钟信号的相位延迟。

2. 发明申请

US20090213261A1 TIMING GENERATOR AND IMAGE SCANNING APPARATUS 有权
标题翻译：时序发生器和图像扫描装置
公开(公告)号：US20090213261A1
公开(公告)日：2009-08-27
申请号：US12365510
申请日：2009-02-04
申请人： Masaki NAGASE , Tohru Kanno
发明人： Masaki NAGASE , Tohru Kanno
IPC分类号： H04N5/335
CPC分类号： H04N5/372 , H04N5/3765
摘要： A clock output from a quartz oscillator is input to a timing generator via a spread spectrum clock generator that spreads the spectrum of the clock. The clock is multiplexed by a phase locked loop to generate pixel clocks having the same frequency as a pixel frequency. The pixel clock is input to a delay locked loop, which generates a multi-layer clock by dividing each cycle of the pixel clock by 60. Clock generating units select a required phase from the multi-layer clock, thereby generating a timing signal. The phase, the pulse width, and the output period of the timing signal are controlled as desired by setting appropriate values to a register.
摘要翻译：来自石英振荡器的时钟输出通过扩展时钟频谱的扩频时钟发生器输入到定时发生器。时钟由锁相环复用，以生成与像素频率相同频率的像素时钟。像素时钟被输入到延迟锁定环路，其通过将像素时钟的每个周期除以60来产生多层时钟。时钟产生单元从多层时钟中选择所需的相位，由此产生定时信号。定时信号的相位，脉冲宽度和输出周期通过将适当的值设置到寄存器来根据需要进行控制。

3. 发明申请

US20140368893A1 PHOTOELECTRIC CONVERSION ELEMENT, IMAGE READING DEVICE, IMAGE FORMING APPARATUS, AND IMAGE READING METHOD 有权
标题翻译：光电转换元件，图像读取装置，图像形成装置和图像读取方法
公开(公告)号：US20140368893A1
公开(公告)日：2014-12-18
申请号：US14301488
申请日：2014-06-11
申请人： Masamoto NAKAZAWA , Masaki NAGASE
发明人： Masamoto NAKAZAWA , Masaki NAGASE
IPC分类号： H04N1/10 , H04N1/028
CPC分类号： H04N1/02815 , H04N1/0473 , H04N1/1013 , H04N1/1039
摘要： A photoelectric conversion element includes: a plurality of light receiving elements that are arranged in a main-scanning direction, are arranged in a sub-scanning direction according to colors of light to be received, and accumulates electric charge due to light exposure; and a plurality of AD conversion units that convert analog signals that indicate quantities of electric charge accumulated in the light receiving elements into digital signals are provide for each of groups each consisting of a predetermined number of pixels corresponding to the light receiving elements arranged in the sub-scanning direction. The AD conversion units convert the analog signals into the digital signals in an order in which the light receiving elements in the group are exposed to light. The light receiving elements constitute a correction unit that performs correction so as to reduce a difference relating to the timings in the sub-scanning direction.
摘要翻译：光电转换元件包括：沿主扫描方向布置的多个光接收元件，按照要接收的光的颜色在副扫描方向上排列，并且由于曝光而积累电荷; 将表示在光接收元件中累积的电荷量的模拟信号转换为数字信号的多个AD转换单元，分别对应于配置在子信号中的受光元件的规定数量的像素构成扫描方向。 AD转换单元按照组中的光接收元件暴露于光的顺序将模拟信号转换成数字信号。光接收元件构成校正单元，其执行校正，以减少与副扫描方向上的定时有关的差异。

4. 发明申请

US20150304517A1 PHOTOELECTRIC CONVERSION ELEMENT, IMAGE READING DEVICE, IMAGE FORMING APPARATUS, AND IMAGE READING METHOD 审中-公开
标题翻译：光电转换元件，图像读取装置，图像形成装置和图像读取方法
公开(公告)号：US20150304517A1
公开(公告)日：2015-10-22
申请号：US14789600
申请日：2015-07-01
申请人： Masamoto NAKAZAWA , Masaki NAGASE
发明人： Masamoto NAKAZAWA , Masaki NAGASE
IPC分类号： H04N1/028 , H04N1/10
CPC分类号： H04N1/02815 , H04N1/0473 , H04N1/1013 , H04N1/1039
摘要： A photoelectric conversion element includes: a plurality of light receiving elements that are arranged in a main-scanning direction, are arranged in a sub-scanning direction according to colors of light to be received, and accumulates electric charge due to light exposure; and a plurality of AD conversion units that convert analog signals that indicate quantities of electric charge accumulated in the light receiving elements into digital signals are provide for each of groups each consisting of a predetermined number of pixels corresponding to the light receiving elements arranged in the sub-scanning direction. The AD conversion units convert the analog signals into the digital signals in an order in which the light receiving elements in the group are exposed to light. The light receiving elements constitute a correction unit that performs correction so as to reduce a difference relating to the timings in the sub-scanning direction.
摘要翻译：光电转换元件包括：沿主扫描方向布置的多个光接收元件，按照要接收的光的颜色在副扫描方向上排列，并且由于曝光而积累电荷; 将表示在光接收元件中累积的电荷量的模拟信号转换为数字信号的多个AD转换单元，分别对应于配置在子信号中的受光元件的规定数量的像素构成扫描方向。 AD转换单元按照组中的光接收元件暴露于光的顺序将模拟信号转换成数字信号。光接收元件构成校正单元，其执行校正，以减少与副扫描方向上的定时有关的差异。

5. 发明申请

US20080231918A1 IMAGE READING DEVICE AND IMAGE FORMING DEVICE 有权
标题翻译：图像读取装置和图像形成装置
公开(公告)号：US20080231918A1
公开(公告)日：2008-09-25
申请号：US12041196
申请日：2008-03-03
申请人： Masaki NAGASE
发明人： Masaki NAGASE
IPC分类号： H04N1/04
CPC分类号： H04N1/486 , H04N5/2176 , H04N5/361
摘要： An image reading device includes a processing circuit having a clamp unit that matches an offset potential of an inputted analog image signal to a predetermined value, a processing unit that subjects an analog image signal obtained from the clamp unit to analog processing, and a converting unit that converts a processed analog image signal to a digital image signal. A control unit for controlling the processing circuit includes a switching unit that switches a main scanning line period of a charge coupled device and outputs analog image signals using a number of reading speeds, and a changing unit that changes a clamp period depending on the main scanning line period.
摘要翻译：一种图像读取装置包括具有将输入的模拟图像信号的偏移电位与预定值相匹配的钳位单元的处理电路，对从钳位单元获得的模拟图像信号进行模拟处理的处理单元，以及转换单元其将经处理的模拟图像信号转换为数字图像信号。用于控制处理电路的控制单元包括切换单元，其切换电荷耦合器件的主扫描线周期并使用多个读取速度输出模拟图像信号;以及改变单元，其根据主扫描改变钳位周期行期。

6. 发明申请

US20180139345A1 IMAGE READING APPARATUS, IMAGE FORMING APPARATUS, IMAGE READING METHOD, AND RECORDING MEDIUM 审中-公开
公开(公告)号：US20180139345A1
公开(公告)日：2018-05-17
申请号：US15600156
申请日：2017-05-19
申请人： Naoki GOH , Masaki NAGASE , Hiroki SHIRADO , Naoki ASABA , Shiho SHIMOSAKA , Satoshi HATANAKA , Osamu KIZAKI , Hiroshi ISHll , Masayuki YABUUCHI , Hideki HASHIMOTO , Atsushi YOSHIDA , Masafumi KISHI , Ayumu HASHIMOTO
发明人： Naoki GOH , Masaki NAGASE , Hiroki SHIRADO , Naoki ASABA , Shiho SHIMOSAKA , Satoshi HATANAKA , Osamu KIZAKI , Hiroshi ISHll , Masayuki YABUUCHI , Hideki HASHIMOTO , Atsushi YOSHIDA , Masafumi KISHI , Ayumu HASHIMOTO
IPC分类号： H04N1/04 , G03G15/043 , G03G15/01 , H04N1/00
CPC分类号： H04N1/04 , H04N1/00766
摘要： An image reading apparatus includes: a plurality of light sources to emit light to a target to be read from a plurality of different irradiation positions; an illumination controller to sequentially and alternately turn on or off the plurality of light sources with a blinking cycle not perceptible to the human eye; an image capturing device to photoelectrically convert, pixel by pixel, reflected light of the light emitted to the target from the plurality of light sources to capture a plurality of read images; a memory to store one or more read images of the plurality of read images being captured; and a synthesizer to synthesize preset regions of the plurality of read images using the one or more read images stored in the memory to generate a synthesized read image representing the target, the preset region of each of the plurality of read images having an image level change caused by reflected light that is smaller than a threshold.

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