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：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。

公开(公告)号：US07400210B2

公开(公告)日：2008-07-15

申请号：US11608352

申请日：2006-12-08

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

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

IPC分类号： H03B5/24 ,  H03L7/06 ,  H03L7/099

CPC分类号： H03L7/0812 ,  H03K3/0315 ,  H03K3/0322 ,  H03L7/0891 ,  H03L7/0995 ,  H03L7/18

摘要： An oscillation frequency control part includes a voltage-to-current converting circuit converting an input voltage to a current having a value corresponding to the input voltage, and outputting a current in proportion to the current obtained from the voltage-to-current converting circuit. An oscillating circuit part includes a ring oscillator, wherein a current in proportion to the output current of the oscillation frequency control part flows through the ring oscillator so that the oscillation frequency in the ring oscillator is controlled by the output current of the oscillation frequency control part. The voltage-to-current converting circuit has linear voltage-to-current conversion characteristics in a predetermined range of the input voltage including a ground potential.

摘要翻译： 振荡频率控制部分包括将输入电压转换为具有与输入电压相对应的值的电流的电压 - 电流转换电路，并且与从电压 - 电流转换电路获得的电流成比例地输出电流。 振荡电路部分包括环形振荡器，其中与振荡频率控制部分的输出电流成比例的电流流过环形振荡器，使得环形振荡器中的振荡频率由振荡频率控制部分的输出电流控制 。 电压 - 电流转换电路在包括接地电位的输入电压的预定范围内具有线性的电压 - 电流转换特性。

公开(公告)号：US20070285495A1

公开(公告)日：2007-12-13

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：US07193480B2

公开(公告)日：2007-03-20

申请号：US10854268

申请日：2004-05-27

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

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

IPC分类号： H03K3/03

CPC分类号： H03L7/0812 ,  H03K3/0315 ,  H03K3/0322 ,  H03L7/0891 ,  H03L7/0995 ,  H03L7/18

摘要： An oscillation frequency control part includes a voltage-to-current converting circuit converting an input voltage to a current having a value corresponding to the input voltage, and outputting a current in proportion to the current obtained from the voltage-to-current converting circuit. An oscillating circuit part includes a ring oscillator, wherein a current in proportion to the output current of the oscillation frequency control part flows through the ring oscillator so that the oscillation frequency in the ring oscillator is controlled by the output current of the oscillation frequency control part. The voltage-to-current converting circuit has linear voltage-to-current conversion characteristics in a predetermined range of the input voltage including a ground potential.

摘要翻译： 振荡频率控制部分包括将输入电压转换为具有与输入电压相对应的值的电流的电压 - 电流转换电路，并且与从电压 - 电流转换电路获得的电流成比例地输出电流。 振荡电路部分包括环形振荡器，其中与振荡频率控制部分的输出电流成比例的电流流过环形振荡器，使得环形振荡器中的振荡频率由振荡频率控制部分的输出电流控制 。 电压 - 电流转换电路在包括接地电位的输入电压的预定范围内具有线性的电压 - 电流转换特性。

公开(公告)号：US20060049893A1

公开(公告)日：2006-03-09

申请号：US11204183

申请日：2005-08-16

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： H01P5/12

CPC分类号： H04L25/0278 ,  H03H7/25 ,  H03H7/40 ,  H03H11/30 ,  H03K19/0005

摘要： An output device is disclosed that includes an impedance matching section including an impedance adjustment section, and a dummy circuit section having the same configuration as the impedance adjustment section and adapted to calculate an adjustment value for matching an output impedance to a characteristic impedance of the transmission line. The impedance matching section sets the adjustment value to an impedance adjustment section, thereby matching the output impedance to the characteristic impedance. The output device further includes a switching transistor configured to be turned on/off so as to switch the output between an H level and an L level, and a constant current driver configured to add a constant current to the output.

公开(公告)号：US20050219354A1

公开(公告)日：2005-10-06

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： B41J2/44 ,  B41J2/435 ,  B41J2/47 ,  G02B26/10 ,  G02B26/12 ,  H04N1/036 ,  H04N1/053 ,  H04N1/113 ,  H04N1/12

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。