公开(公告)号：US20050146596A1

公开(公告)日：2005-07-07

申请号：US11030419

申请日：2005-01-07

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： B41J2/44 ,  B41J2/47 ,  G02B26/10 ,  G06K15/12 ,  H04N1/036 ,  H04N1/053 ,  H04N1/113 ,  H04N1/12 ,  H04N1/405

CPC分类号： H04N1/053 ,  G06K15/1219 ,  H04N1/1135 ,  H04N1/12 ,  H04N2201/02439 ,  H04N2201/0471 ,  H04N2201/04732 ,  H04N2201/04744 ,  H04N2201/04784 ,  H04N2201/04794

摘要： A pixel clock and pulse-modulation-signal generating device includes a high-frequency-clock generating unit that generates a high-frequency clock; a modulation-data generating unit that generates, based on pixel control data that specifies a pixel length and image data, phase data that indicates a transition timing of a pixel clock and modulation data that indicates a desired bit pattern that corresponds to the image data; a pixel-clock generating unit that generates a pixel clock based on the high-frequency clock, the phase data, and a horizontal synchronization signal; and a serial-modulation-signal generating unit that inputs the modulation data, and outputs a pulse modulation signal in a serial pulse string based on the high-frequency clock.

摘要翻译： 像素时钟和脉冲调制信号发生装置包括产生高频时钟的高频时钟产生单元; 调制数据生成单元，其基于指定像素长度和图像数据的像素控制数据生成指示像素时钟的转移定时的相位数据和表示与图像数据对应的期望位图案的调制数据; 像素时钟生成单元，其基于高频时钟，相位数据和水平同步信号生成像素时钟; 以及串行调制信号生成单元，其输入调制数据，并且基于高频时钟输出串行脉冲串中的脉冲调制信号。

公开(公告)号：US20050099489A1

公开(公告)日：2005-05-12

申请号：US10953372

申请日：2004-09-30

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： B41J2/44 ,  G02B26/10 ,  G02B26/12 ,  G06K15/12 ,  H04N1/036 ,  H04N1/113 ,  B41J2/435

CPC分类号： G02B26/127 ,  G06K15/1219

摘要： In a pixel clock creation method and device, a high frequency clock is created. A scanning time needed to scan a predetermined scanning length is detected in accuracy of half a period of the high frequency clock to output a detection value indicating the detected scanning time. The detection value and a predetermined target value are compared to output a comparison result. A phase data is created based on the comparison result. A pixel clock whose phase is controlled based on both the high frequency clock and the phase data is created.

摘要翻译： 在像素时钟创建方法和装置中，产生高频时钟。 以高频时钟的半周期的精度检测扫描预定扫描长度所需的扫描时间，以输出指示检测到的扫描时间的检测值。 将检测值和预定目标值进行比较以输出比较结果。 基于比较结果创建相位数据。 创建基于高频时钟和相位数据来控制相位的像素时钟。

公开(公告)号：US08995486B2

公开(公告)日：2015-03-31

申请号：US12881482

申请日：2010-09-14

申请人： Atsufumi Omori ,  Masaaki Ishida

发明人： Atsufumi Omori ,  Masaaki Ishida

IPC分类号： H01S3/00 ,  H01S5/042 ,  H01S5/40

CPC分类号： H01S5/0427 ,  H01S5/4025

摘要： There provided is a semiconductor laser control device which including plural light sources that are configured with eight or more semiconductor laser elements, a one detecting section that detects a light power of the light sources, a light power control unit that compares a signal according to a light power detected by the detecting section with a control signal corresponding to a predetermined light power to control a current supplied to the light sources, and a voltage clamp circuit that functions as an overvoltage preventing means for the detecting section when turning on each of the light sources to perform light power control.

摘要翻译： 提供了一种半导体激光控制装置，其包括配置有八个或更多个半导体激光元件的多个光源，检测光源的光功率的一个检测部分，将功率控制单元 由检测部分检测到的光功率具有对应于预定光功率的控制信号以控制提供给光源的电流;以及电压钳位电路，其用作当开启每个光时用于检测部分的过电压防止装置 来源进行光功率控制。

公开(公告)号：US08446444B2

公开(公告)日：2013-05-21

申请号：US12358867

申请日：2009-01-23

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

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

IPC分类号： B41J2/435 ,  B41J2/455 ,  B41J2/47

CPC分类号： G02B26/127

摘要： A deflector deflects a light beam emitted from a light source including a plurality of light-emitting units. A scanning optical system focuses the light beam deflected by the deflector on a scanning target surface. A monitoring photoreceiver receives a part of a light beam deflected by the deflector and directed toward an area within a scanning area outside an image area. A detecting unit individually detects emission powers of at least two light-emitting units based on an output signal of the monitoring photoreceiver in a single sweep of scanning.

摘要翻译： 偏转器偏转从包括多个发光单元的光源发射的光束。 扫描光学系统将由偏转器偏转的光束聚焦在扫描目标表面上。 监视光接收器接收由偏转器偏转并被指向图像区域外的扫描区域内的区域的一部分光束。 检测单元在单次扫描扫描中基于监视光接收器的输出信号单独地检测至少两个发光单元的发射功率。

公开(公告)号：US08310516B2

公开(公告)日：2012-11-13

申请号：US11913558

申请日：2006-08-30

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

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

IPC分类号： B41J2/45 ,  B41J2/47

CPC分类号： G02B26/123 ,  B41J2/455 ,  B41J2/473 ,  H04N1/1135 ,  H04N1/40031

摘要： A light scanning apparatus having plural light sources includes a light source control unit configured to control the light sources to form L (L≧2) light beam arrays aligned in a sub scanning direction each of which L light beam arrays are formed by causing M ((N−1)≧M≧1) light sources out of N (N≧2) light sources assigned to each of the L light beam arrays to emit light as M light emitting sources, wherein each of the L light beam arrays forms a pixel and a total of L pixels aligned in the sub scanning direction are formed.

摘要翻译： 具有多个光源的光扫描装置包括光源控制单元，被配置为控制光源以形成沿副扫描方向排列的L（L≥2）个光束阵列，每个L光束阵列通过使M（ （N-1）≥M≥1）分配给每个L光束阵列的N（N≥2）个光源中的光源作为M个发光源发光，其中L个光束阵列中的每一个形成 形成在副扫描方向上对齐的L个像素和总共L个像素。

公开(公告)号：US08300075B2

公开(公告)日：2012-10-30

申请号：US13149234

申请日：2011-05-31

申请人： Masaaki Ishida ,  Atsufumi Omori

发明人： Masaaki Ishida ,  Atsufumi Omori

IPC分类号： B41J2/47

CPC分类号： H01S5/06835 ,  B41J2/442 ,  B41J2/471 ,  G03F7/70391 ,  G03F7/704

摘要： A laser driving device in the embodiment includes: a laser light source that emits laser light; a light source drive control unit that adjusts a light amount of laser light emitted from the laser light source constant and controls on-off driving of the laser light source; a light amount adjustment element that is disposed in an optical path of laser light emitted from the laser light source and is capable of electrically changing transmittance or reflectance of the laser light that is entered thereinto; and a peak light amount control unit that controls the transmittance or the reflectance of the light amount adjustment element, so as to adjust a peak light amount of the laser light that is output from the light amount adjustment element after having traveled through or having been reflected by the light amount adjustment element.

摘要翻译： 本实施方式的激光驱动装置具备发射激光的激光光源， 光源驱动控制单元，其调整从所述激光光源发射的激光的光量恒定并控制所述激光源的开关驱动; 光量调节元件，其设置在从所述激光光源发射的激光的光路中，并且能够改变进入其中的激光的透射率或反射率; 以及峰值光量控制单元，其控制光量调节元件的透射率或反射率，以便调整在经过或被反射之后从光量调节元件输出的激光的峰值光量 通过光量调节元件。

公开(公告)号：US08253768B2

公开(公告)日：2012-08-28

申请号：US11565315

申请日：2006-11-30

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

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

IPC分类号： B41J2/47 ,  B41J2/385 ,  B41J15/14

CPC分类号： B41J2/473 ,  B41J2/455 ,  G02B26/123 ,  G02B26/124

摘要： A disclosed optical scanner includes a light source unit and a control unit configured to control the light source unit. Light emitted from the light source unit is scanned to expose a scan object surface and form an image on the scan object surface. The light source unit includes plural light sources arranged at a density equal to N (N being an integer of two or more) times higher than a density of pixels on the scan object surface. The control unit controls the light source unit such that one pixel is formed by at least two of the light sources.

摘要翻译： 所公开的光学扫描器包括光源单元和被配置为控制光源单元的控制单元。 从光源单元发射的光被扫描以暴露扫描对象表面并在扫描对象表面上形成图像。 光源单元包括以等于扫描对象面上的像素密度的N（N为2以上的整数）的密度排列的多个光源。 控制单元控制光源单元，使得一个像素由至少两个光源形成。

公开(公告)号：US07973817B2

公开(公告)日：2011-07-05

申请号：US11844854

申请日：2007-08-24

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： B41J2/435

CPC分类号： H04N1/053 ,  G06K15/1219 ,  H04N1/1135 ,  H04N1/12 ,  H04N2201/02439 ,  H04N2201/0471 ,  H04N2201/04732 ,  H04N2201/04744 ,  H04N2201/04784 ,  H04N2201/04794

摘要： A pixel clock and pulse-modulation-signal generating device includes a high-frequency-clock generating unit that generates a high-frequency clock; a modulation-data generating unit that generates, based on pixel control data that specifies a pixel length and image data, phase data that indicates a transition timing of a pixel clock and modulation data that indicates a desired bit pattern that corresponds to the image data; a pixel-clock generating unit that generates a pixel clock based on the high-frequency clock, the phase data, and a horizontal synchronization signal; and a serial-modulation-signal generating unit that inputs the modulation data, and outputs a pulse modulation signal in a serial pulse string based on the high-frequency clock.

摘要翻译： 像素时钟和脉冲调制信号发生装置包括产生高频时钟的高频时钟产生单元; 调制数据生成单元，其基于指定像素长度和图像数据的像素控制数据生成指示像素时钟的转移定时的相位数据和表示与图像数据对应的期望位图案的调制数据; 像素时钟生成单元，其基于高频时钟，相位数据和水平同步信号生成像素时钟; 以及串行调制信号生成单元，其输入调制数据，并且基于高频时钟输出串行脉冲串中的脉冲调制信号。

公开(公告)号：US20100214637A1

公开(公告)日：2010-08-26

申请号：US12693775

申请日：2010-01-26

申请人： Yasuhiro Nihei ,  Masaaki Ishida ,  Atsufumi Omori

发明人： Yasuhiro Nihei ,  Masaaki Ishida ,  Atsufumi Omori

IPC分类号： G02B26/08

CPC分类号： B41J2/473 ,  G02B26/10 ,  G03G15/04072 ,  G03G15/0435 ,  G03G2215/0404 ,  G06K15/1261 ,  H04N1/02865 ,  H04N1/113 ,  H04N2201/04767

摘要： In a light-source driving device, a high-frequency clock generating circuit generates two high-frequency clock signals having mutually different phases, an image-data creating circuit creates a plurality of image data corresponding to a plurality of light-emitting units according to image information, and a write control circuit creates a plurality of modulated data corresponding to the light-emitting units from the plurality of image data and separately controls output timings of the plurality of modulated data by using a time, as a unit, corresponding to a phase difference between the two high-frequency clock signals. The write control circuit includes two data switching circuits that set a correspondence relation between image data and PWM data based on one of a relation between an array of the light-emitting units and an array of a plurality of light spots and a relation between a surface to be scanned and a main scanning direction.

摘要翻译： 在光源驱动装置中，高频时钟生成电路生成具有相互不同相位的两个高频时钟信号，图像数据生成电路根据与图像数据生成电路对应的多个发光单元生成多个图像数据 图像信息和写入控制电路从多个图像数据创建对应于发光单元的多个调制数据，并且通过使用对应于一个单元的时间单独地控制多个调制数据的输出定时 两个高频时钟信号之间的相位差。 写控制电路包括两个数据切换电路，其基于发光单元的阵列与多个光点的阵列之间的关系和表面之间的关系之一来设置图像数据和PWM数据之间的对应关系 被扫描和主扫描方向。

公开(公告)号：US07671882B2

公开(公告)日：2010-03-02

申请号：US11079381

申请日：2005-03-15

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

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

IPC分类号： B41J2/435 ,  B41J2/47

CPC分类号： H04N1/40037 ,  H01S5/0427

摘要： A semiconductor laser modulation signal is generated for modulating a semiconductor laser. The semiconductor laser is driven based on the semiconductor laser modulation signal. An output impedance of a semiconductor laser modulation signal generating unit and an input impedance of a semiconductor laser driving unit are corrected. The semiconductor laser modulation signal is transmitted as a low amplitude differential signal, from the semiconductor laser modulation signal generating unit to the semiconductor laser driving unit.

摘要翻译： 产生用于调制半导体激光器的半导体激光调制信号。 基于半导体激光调制信号驱动半导体激光器。 校正半导体激光调制信号生成部的输出阻抗和半导体激光驱动部的输入阻抗。 半导体激光调制信号从半导体激光调制信号发生单元传输到半导体激光器驱动单元作为低振幅差分信号。