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：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：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。

公开(公告)号：US20080012933A1

公开(公告)日：2008-01-17

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： B41J2/47

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：US20070091163A1

公开(公告)日：2007-04-26

申请号：US11512122

申请日：2006-08-30

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： B41J2/47 ,  B41J2/435

CPC分类号： H04N1/40031 ,  H04N1/191 ,  H04N2201/04758

摘要： An optical scanner includes a light source unit configured to emit light; an optical system configured to cause the light emitted from the light source unit to scan an object so as to form an image on the object; and a control unit configured to control the light source unit. The light source unit includes a plurality of light emitting units arranged in a sub scanning direction, and the control unit controls the light source unit to emit light at different positions on the object by using either n (n: positive integer) light emitting units or n+1 light emitting units selected from among the plurality of light emitting units, according to a positional shift amount of the image in the sub scanning direction.

摘要翻译： 一种光学扫描器，包括配置成发光的光源单元; 光学系统，被配置为使从所述光源单元发射的光扫描物体以在所述物体上形成图像; 以及控制单元，被配置为控制所述光源单元。 光源单元包括沿副扫描方向布置的多个发光单元，并且控制单元通过使用n（n：正整数）发光单元或者n（n：正整数）发光单元来控制光源单元在物体上的不同位置发光 根据副扫描方向上的图像的位置偏移量，从多个发光单元中选择n + 1个发光单元。

公开(公告)号：US06933957B2

公开(公告)日：2005-08-23

申请号：US10667321

申请日：2003-09-23

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： B41J2/435 ,  B41J2/47 ,  G03G15/043 ,  G03G15/30

CPC分类号： G03G15/305 ,  G03G15/043

摘要： A pixel clock generation apparatus includes a detector detecting a time interval between two horizontal synchronization signals. A comparing part compares the time interval detected by the detector and a target value, and outputs the difference. A phase shift data generation part stores one or more lookup tables each storing a pattern of phase shift data for controlling a phase shift amount of a pixel clock, and reads and outputs the phase shift data from the lookup table based on the difference that is output from the comparing part. A high frequency clock generation part generates a high frequency clock. A pixel clock generation part generates the pixel clock whose phase is controlled in accordance with the phase shift data based on the high frequency clock.

摘要翻译： 像素时钟生成装置包括检测两个水平同步信号之间的时间间隔的检测器。 比较部分将检测器检测的时间间隔与目标值进行比较，并输出差值。 相移数据生成部分存储一个或多个查找表，每个查找表存储用于控制像素时钟的相移量的相移数据的模式，并且基于输出的差读取并输出来自查找表的相移数据 从比较部分。 高频时钟生成部生成高频时钟。 像素时钟生成部根据高频时钟生成相位根据相移数据进行相位控制的像素时钟。

公开(公告)号：US07834902B2

公开(公告)日：2010-11-16

申请号：US11741871

申请日：2007-04-30

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： B41J2/435

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：US20090195635A1

公开(公告)日：2009-08-06

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： B41J15/14

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：US20090174915A1

公开(公告)日：2009-07-09

申请号：US12348618

申请日：2009-01-05

申请人： YASUHIRO NIHEI ,  Masaaki Ishida ,  Atsufumi Omori ,  Dan Ozasa ,  Jun Tanabe

发明人： YASUHIRO NIHEI ,  Masaaki Ishida ,  Atsufumi Omori ,  Dan Ozasa ,  Jun Tanabe

IPC分类号： H04N1/04

CPC分类号： H04N1/053 ,  H04N2201/0471 ,  H04N2201/04729 ,  H04N2201/04732 ,  H04N2201/04744 ,  H04N2201/04784 ,  H04N2201/04789

摘要： A write control circuit includes a first data switching circuit that sets a correspondence relationship between signals from line buffers and input signals to a delay circuitry, based on a signal from a CPU; and a second data switching circuit that sets a correspondence relationship between output signals of the delay circuitry and drive signals, based on a signal from the CPU. This enables a plurality of light emitting sections to be driven properly, regardless of a main scanning direction and an arrangement of a plurality of light spots being in any of CASE-1 to CASE-4 in an optical scanning device.

摘要翻译： 写控制电路包括：第一数据切换电路，其基于来自CPU的信号，将来自线缓冲器的信号和输入信号之间的对应关系设置为延迟电路; 以及第二数据切换电路，其基于来自CPU的信号来设置延迟电路的输出信号和驱动信号之间的对应关系。 这使得能够适当地驱动多个发光部，而不管主扫描方向和在光学扫描装置中的CASE-1至CASE-4中的任何一个的多个光点的布置。

公开(公告)号：US07327379B2

公开(公告)日：2008-02-05

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： B41J2/435

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。