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103 条记录 (耗时 0.032 秒)

    Circuit for generating pixel clock with fine phase control
    53.
    发明授权
    Circuit for generating pixel clock with fine phase control 失效
    用于产生具有精细相位控制的像素时钟的电路

    公开(公告)号：US07009430B2

    公开(公告)日：2006-03-07

    申请号：US10771521

    申请日：2004-02-05

    申请人： Yasuhiro Nihei ,  Masaaki Ishida ,  Atsufumi Omori ,  Dan Ozasa

    发明人： Yasuhiro Nihei ,  Masaaki Ishida ,  Atsufumi Omori ,  Dan Ozasa

    IPC分类号： H03L7/00

    CPC分类号： H03L7/08 ,  G02B26/127 ,  H03L7/07 ,  H03L7/091 ,  H03L2207/50

    摘要： A circuit for generating a pixel clock for use in scanning a laser beam includes a high-frequency-clock generating circuit which generates a high-frequency clock having a higher frequency than the pixel clock, and a control circuit which generates the pixel clock while shifting a phase of the pixel clock by a shift step proportional to a clock cycle of the high-frequency clock in response to phase data indicative of timing and amounts of phase shifts.

    摘要翻译： 用于产生用于扫描激光束的像素时钟的电路包括：高频时钟产生电路，其生成具有比像素时钟频率更高的高频时钟;以及控制电路，其在移位期间产生像素时钟 响应于指示相位的定时和量的相位数据，通过与高频时钟的时钟周期成比例的移位步长的像素时钟的相位。

    Light source driving device, light scanning device and image forming apparatus
    54.
    发明授权
    Light source driving device, light scanning device and image forming apparatus 有权
    光源驱动装置，光扫描装置和图像形成装置

    公开(公告)号：US09035988B2

    公开(公告)日：2015-05-19

    申请号：US12126103

    申请日：2008-05-23

    申请人： Yasuhiro Nihei ,  Masaaki Ishida ,  Atsufumi Omori ,  Jun Tanabe

    发明人： Yasuhiro Nihei ,  Masaaki Ishida ,  Atsufumi Omori ,  Jun Tanabe

    IPC分类号： B41J2/435 ,  B41J2/47

    CPC分类号： B41J2/473

    摘要： A light source driving device which drives a plurality of light emitting parts provided in a light source to emit a plurality of light beams based on image information, includes a plurality of driving circuits configured to drive the plurality of light emitting parts. Each of the driving circuits includes a signal generation circuit that generates a modulation signal to control a light emitting intensity of the corresponding light emitting part based on the image information, a detection circuit that detects a light emitting status of the corresponding light emitting part; and a light emitting circuit that outputs a driving signal to the corresponding light emitting part to emit a light beam in accordance with the modulation signal and adjustment data obtained based on the light emitting status of at least one of the plurality of light emitting parts.

    摘要翻译： 基于图像信息驱动设置在光源中以发射多个光束的多个发光部分的光源驱动装置包括被配置为驱动多个发光部分的多个驱动电路。 每个驱动电路包括：信号产生电路，产生基于图像信息来控制对应的发光部分的发光强度的调制信号;检测电路，其检测对应的发光部分的发光状态; 以及发光电路，其根据所述调制信号和基于所述多个发光部中的至少一个发光部的发光状态获得的调整数据，向对应的发光部输出驱动信号以发射光束。

    Laser driving device, optical scanning device, image forming apparatus, and laser driving method
    55.
    发明授权
    Laser driving device, optical scanning device, image forming apparatus, and laser driving method 有权
    激光驱动装置，光学扫描装置，成像装置和激光驱动方法

    公开(公告)号：US08811441B2

    公开(公告)日：2014-08-19

    申请号：US13024572

    申请日：2011-02-10

    申请人： Masaaki Ishida ,  Atsufumi Omori

    发明人： Masaaki Ishida ,  Atsufumi Omori

    IPC分类号： H01S3/00

    CPC分类号： H04N1/113 ,  G02B26/127 ,  H01S5/0428 ,  H01S5/06216 ,  H01S5/4025 ,  H04N1/02865

    摘要： A laser driving device that drives a semiconductor laser based on a light-emitting signal includes an expansion circuit that expands a pulse width of the light-emitting signal based on a known difference between the pulse width of the light-emitting signal and a lighting pulse width of the semiconductor laser when the semiconductor laser emits light according to the light-emitting signal, and a driver that outputs a driving signal to the semiconductor laser according to an output signal of the expansion circuit.

    摘要翻译： 基于发光信号驱动半导体激光器的激光驱动装置包括扩展电路，该扩展电路基于发光信号的脉冲宽度与点亮脉冲之间的已知差扩大发光信号的脉冲宽度 半导体激光器根据发光信号发光时的半导体激光器的宽度;以及根据扩展电路的输出信号向半导体激光器输出驱动信号的驱动器。

    Pixel clock generator, optical scanner, and image forming apparatus
    57.
    发明授权
    Pixel clock generator, optical scanner, and image forming apparatus 有权
    像素时钟发生器，光学扫描仪和图像形成装置

    公开(公告)号：US08005321B2

    公开(公告)日：2011-08-23

    申请号：US11062671

    申请日：2005-02-23

    申请人： Atsufumi Omori ,  Masaaki Ishida ,  Yasuhiro Nihei ,  Dan Ozasa

    发明人： Atsufumi Omori ,  Masaaki Ishida ,  Yasuhiro Nihei ,  Dan Ozasa

    IPC分类号： G06K7/00

    CPC分类号： G02B26/127 ,  H04N1/053 ,  H04N1/1135 ,  H04N1/12 ,  H04N2201/02439 ,  H04N2201/0471 ,  H04N2201/04732 ,  H04N2201/04744 ,  H04N2201/04781 ,  H04N2201/04793 ,  H04N2201/04794

    摘要： A pixel clock generator that generates a pixel clock to regulate a drive timing of a scanning light source includes a data generating circuit that generates phase data based on a phase data pattern to correct an uneven scanning speed and fluctuation of scanning widths, and a pixel clock generating circuit generates a pixel clock having a long cycle based on a high-frequency clock and that performs a phase shift for the pixel clock based on the high-frequency clock. The phase pattern is set-such that difference in an amount of the phase shift between the pixel clocks adjacent to each other does not exceed a basic amount of the phase shift of the pixel clock generating circuit.

    摘要翻译： 产生用于调节扫描光源的驱动定时的像素时钟的像素时钟发生器包括数据生成电路，其基于相位数据模式生成相位数据，以校正扫描速度不均匀和扫描宽度的波动，以及像素时钟 生成电路基于高频时钟生成具有长周期的像素时钟，并且基于高频时钟执行针对像素时钟的相移。 相位图案被设置为使得彼此相邻的像素时钟之间的相移量的差异不超过像素时钟产生电路的相移的基本量。

    LIGHT-SOURCE DRIVING DEVICE, OPTICAL SCANNING DEVICE, AND COUNTING METHOD
    59.
    发明申请
    LIGHT-SOURCE DRIVING DEVICE, OPTICAL SCANNING DEVICE, AND COUNTING METHOD 有权
    光源驱动装置，光扫描装置和计数方法

    公开(公告)号：US20100045767A1

    公开(公告)日：2010-02-25

    申请号：US12541719

    申请日：2009-08-14

    申请人： Yasuhiro Nihei ,  Atsufumi Omori ,  Dan Ozasa ,  Jun Tanabe ,  Masaaki Ishida

    发明人： Yasuhiro Nihei ,  Atsufumi Omori ,  Dan Ozasa ,  Jun Tanabe ,  Masaaki Ishida

    IPC分类号： B41J2/435 ,  G02B27/20

    CPC分类号： G03G15/326 ,  G02B26/12 ,  G03G15/0435 ,  G06K15/1219

    摘要： A light-source driving device includes a high-frequency clock generating circuit that generates high-frequency clock signals of which phases are different from each other; an image-data generating circuit that generates a plurality of pieces of image data corresponding to light emitting units in accordance with image information; a write control circuit that generates a plurality of pieces of modulation data corresponding to the light emitting units based on the image data and adjusts output timing of the modulation data individually in units of time corresponding to a phase difference of the high-frequency clock signals; and a light-source driving circuit that drives the light emitting units based on a plurality of pieces of PWM data output from the write control circuit.

    摘要翻译： 光源驱动装置包括：高频时钟发生电路，其产生相位彼此不同的高频时钟信号; 图像数据生成电路，根据图像信息生成与发光单元对应的多个图像数据; 写入控制电路，其基于图像数据生成与发光单元对应的多个调制数据，并且以对应于高频时钟信号的相位差的时间为单位分别调整调制数据的输出定时; 以及基于从写入控制电路输出的多条PWM数据驱动发光单元的光源驱动电路。