公开(公告)号：US20070036059A1

公开(公告)日：2007-02-15

申请号：US11581483

申请日：2006-10-17

Applicant: Naruhiro Masui ,  Hidetoshi Ema

Inventor： Naruhiro Masui ,  Hidetoshi Ema

IPC: G11B7/00

CPC classification number: G11B7/126 ,  G11B7/0062 ,  G11B7/1263 ,  G11B11/1053 ,  H01S5/0427 ,  H01S5/0683

Abstract: A light source drive which modulates a light source so as to cause the same to emit a light, includes: a superposition current generation part which generates a superposition current approximately corresponding to a charging/discharging current needed for a capacitance occurring in parallel to the light source for a predetermined time period near at least one of a rising-up part and a decaying-down part of a waveform of a drive current for the light source; and an addition/subtraction part which adds to or subtracts from the drive current the superposition current generated by the superposition current generation part.

公开(公告)号：US6118798A

公开(公告)日：2000-09-12

申请号：US272197

申请日：1999-03-18

Applicant: Hidetoshi Ema ,  Masaaki Ishida ,  Naruhiro Masui

Inventor： Hidetoshi Ema ,  Masaaki Ishida ,  Naruhiro Masui

IPC: H01S5/042 ,  H01S5/0683 ,  H01S3/10

CPC classification number: H01S5/06835 ,  H01S5/042 ,  H01S5/0428

Abstract: A pulse width modulation and intensity modulation signal generating unit, based on input data, performs pulse width modulation and intensity modulation and generates a light emission instruction signal. An error amplifier forms a negative feedback loop together with a semiconductor laser and a light reception device which monitors light output of the semiconductor laser, the error amplifier controlling forward current of the semiconductor laser so that a light reception signal proportional to the light output of the semiconductor laser is equal to the light emission instruction signal. A current driving unit causes a driving current, according to the light emission instruction signal, to flow through the semiconductor laser as the forward current thereof, the driving current being generated so as to control driving of the semiconductor laser with a current of the difference or sum with the control current of the negative feedback loop. The pulse width modulation nd intensity modulation signal generating unit, the error amplifier and the current driving unit are formed as one chip of an integrated circuit.

Abstract translation: 脉冲宽度调制和强度调制信号产生单元基于输入数据进行脉冲宽度调制和强度调制，并产生发光指示信号。 误差放大器与半导体激光器和监视半导体激光器的光输出的光接收装置一起形成负反馈回路，误差放大器控制半导体激光器的正向电流，使得与光输出成比例的光接收信号 半导体激光器等于发光指示信号。 电流驱动单元使得根据发光指示信号的驱动电流作为其正向电流流过半导体激光器，产生驱动电流以便以不同的电流控制半导体激光器的驱动，或者 与负反馈回路的控制电流相加。 脉冲宽度调制和强度调制信号发生单元，误差放大器和电流驱动单元形成为集成电路的一个芯片。

公开(公告)号：US5946334A

公开(公告)日：1999-08-31

申请号：US825300

申请日：1997-03-27

Applicant: Hidetoshi Ema ,  Masaaki Ishida ,  Naruhiro Masui

Inventor： Hidetoshi Ema ,  Masaaki Ishida ,  Naruhiro Masui

IPC: H01S5/042 ,  H01S5/0683 ,  H01S3/10

CPC classification number: H01S5/06835 ,  H01S5/042 ,  H01S5/0428

Abstract: A pulse width modulation and intensity modulation signal generating unit, based on input data, performs pulse width modulation and intensity modulation and generates a light emission instruction signal. An error amplifier forms a negative feedback loop together with a semiconductor laser and a light reception device which monitors light output of the semiconductor laser, the error amplifier controlling forward current of the semiconductor laser so that a light reception signal proportional to the light output of the semiconductor laser is equal to the light emission instruction signal. A current driving unit causes a driving current, according to the light emission instruction signal, to flow through the semiconductor laser as the forward current thereof, the driving current being generated so as to control driving of the semiconductor laser with a current of the difference or sum with the control current of the negative feedback loop. The pulse width modulation and intensity modulation signal generating unit, the error amplifier and the current driving unit are formed as one chip of an integrated circuit.

Abstract translation: 脉冲宽度调制和强度调制信号产生单元基于输入数据进行脉冲宽度调制和强度调制，并产生发光指示信号。 误差放大器与半导体激光器和监视半导体激光器的光输出的光接收装置一起形成负反馈回路，误差放大器控制半导体激光器的正向电流，使得与光输出成比例的光接收信号 半导体激光器等于发光指示信号。 电流驱动单元使得根据发光指示信号的驱动电流作为其正向电流流过半导体激光器，产生驱动电流，以便以不同的电流控制半导体激光器的驱动，或 与负反馈回路的控制电流相加。 脉冲宽度调制和强度调制信号产生单元，误差放大器和电流驱动单元形成为集成电路的一个芯片。

公开(公告)号：US20130064580A1

公开(公告)日：2013-03-14

申请号：US13609737

申请日：2012-09-11

Applicant: Norikazu IGARASHI ,  Naruhiro Masui

Inventor： Norikazu IGARASHI ,  Naruhiro Masui

IPC: G03G15/01

CPC classification number: G03G15/0189 ,  G03G15/5058 ,  G03G2215/0161

Abstract: An image forming apparatus reduces superimposing misalignment due to skew difference and registration difference and superimposing misalignment of visible image due to periodic position error generated on a plurality of latent image carriers respectively by correcting image information. A controller of the image forming apparatus has a deviation amount storing unit store data of magnification error in the sub-scanning direction e, executes rotation posture determining process that sets writing rotation posture as rotation angle posture at the time of starting writing latent image on photoconductors for Y, M, C, and K respectively, and has an image data correcting unit correct the image information based on the determined writing rotation posture and various error data (including magnification error in the sub-scanning direction e).

Abstract translation: 图像形成装置通过校正图像信息，分别减少由于偏差和配准差引起的叠加不对准，并且由于分别在多个潜像载体上产生的周期性位置误差而叠加可见图像的未对准。 图像形成装置的控制器具有偏离量存储单元存储副扫描方向e的放大误差数据，执行旋转姿势确定处理，其将写入旋转姿势设定为开始将潜像写入到感光体上的旋转角度姿势 对于Y，M，C和K分别具有图像数据校正单元，该图像数据校正单元基于确定的写入旋转姿势和各种错误数据（包括副扫描方向e的倍率误差）来校正图像信息。

公开(公告)号：US20110164273A1

公开(公告)日：2011-07-07

申请号：US12998063

申请日：2009-09-15

Applicant: Naruhiro Masui

Inventor： Naruhiro Masui

IPC: G06K15/00

CPC classification number: H04N1/053 ,  G02B26/127 ,  G03G15/043 ,  G06K15/1219 ,  H04N1/1135 ,  H04N1/12 ,  H04N2201/0082 ,  H04N2201/02439 ,  H04N2201/0471 ,  H04N2201/04732 ,  H04N2201/04744 ,  H04N2201/04772 ,  H04N2201/04784 ,  H04N2201/04786 ,  H04N2201/04794

Abstract: A pixel clock generator includes a frequency divider 4 that generates a pixel clock PCLK based on a high frequency clock VCLK, a comparator 5 that calculates an error Lerr in the time obtained by integrating a cycle of the pixel clock PCLK for a target number RefN from a time when synchronization signals SPSYNC and EPSYNC are detected, a filter 6, and a frequency calculating unit 7 that sets a frequency dividing value M of the frequency divider 4. The filter 6 and the frequency calculating unit 7 calculate an average of a frequency of the pixel clock PCLK based on the error Lerr, determine a reference error value from the error Lerr in N-cycles, calculate offset values of the frequencies of N pieces of pixel clocks PCLK based on a difference between the reference error value and the error Lerr, and calculate the frequency dividing value M based on a result obtained by adding the circularly selected offset values and the average of the frequency of the pixel clock PCLK.

Abstract translation: 像素时钟发生器包括：分频器4，其基于高频时钟VCLK产生像素时钟PCLK;比较器5，其计算通过将像素时钟PCLK的周期与目标编号RefN的周期进行积分而获得的时间中的误差Lerr， 检测同步信号SPSYNC和EPSYNC的时间，滤波器6和设定分频器4的分频值M的频率计算单元7.滤波器6和频率计算单元7计算频率 基于误差Lerr的像素时钟PCLK基于误差Lerr在N个周期中确定参考误差值，基于参考误差值和误差Lerr之间的差来计算N个像素时钟PCLK的频率的偏移值 ，并且基于通过将循环选择的偏移值和像素时钟PCLK的频率的平均值相加而获得的结果来计算分频值M.

公开(公告)号：US07656422B2

公开(公告)日：2010-02-02

申请号：US11681561

申请日：2007-03-02

Applicant: Dan Ozasa ,  Naruhiro Masui

Inventor： Dan Ozasa ,  Naruhiro Masui

IPC: B41J2/435 ,  B41J2/47 ,  H03L7/00 ,  H03L1/00 ,  H04N1/40

CPC classification number: H04N1/506

Abstract: A disclosed device for generating a pulse-width modulated signal according to image data and based on a pixel clock signal includes a pixel clock generating unit configured to generate the pixel clock signal and a modulated data generating unit configured to generate the pulse-width modulated signal. The pixel clock generating unit includes a multi-phase clock signal generating unit, a comparing unit, a frequency calculation unit, a counting unit, and a pixel clock signal output unit. The modulated data generating unit includes a data converting unit, an edge time calculation unit, and a pulse-width modulated signal output unit.

Abstract translation: 根据图像数据并基于像素时钟信号生成脉宽调制信号的装置包括：像素时钟生成单元，被配置为生成像素时钟信号;调制数据生成单元，被配置为生成脉宽调制信号 。 像素时钟生成单元包括多相时钟信号生成单元，比较单元，频率计算单元，计数单元和像素时钟信号输出单元。 调制数据生成单元包括数据转换单元，边沿时间计算单元和脉冲宽度调制信号输出单元。

公开(公告)号：US07423940B2

公开(公告)日：2008-09-09

申请号：US11508293

申请日：2006-08-23

Applicant: Naruhiro Masui ,  Hidetoshi Ema

Inventor： Naruhiro Masui ,  Hidetoshi Ema

IPC: G11B7/00

CPC classification number: G11B7/09 ,  G11B7/094 ,  G11B7/0941

Abstract: A signal processing apparatus is provided with a converter for converting at least one analog light detection signal into a digital light detection signal, and a signal generator for generating at least one servo error signal by subjecting the digital light detection signal to a predetermined operation process. The signal generator has a function of modifying contents of the operation process.

Abstract translation: 信号处理装置设置有用于将至少一个模拟光检测信号转换为数字光检测信号的转换器，以及用于通过使数字光检测信号经受预定的操作处理而产生至少一个伺服误差信号的信号发生器。 信号发生器具有修改操作过程的内容的功能。

公开(公告)号：US07142486B2

公开(公告)日：2006-11-28

申请号：US10109696

申请日：2002-04-01

Applicant: Naruhiro Masui ,  Hidetoshi Ema

Inventor： Naruhiro Masui ,  Hidetoshi Ema

IPC: G11B7/095 ,  G11B7/00

CPC classification number: G11B7/09 ,  G11B7/094 ,  G11B7/0941

Abstract: A signal processing apparatus is provided with a converter for converting at least one analog light detection signal into a digital light detection signal, and a signal generator for generating at least one servo error signal by subjecting the digital light detection signal to a predetermined operation process. The signal generator has a function of modifying contents of the operation process.

公开(公告)号：US20060227916A1

公开(公告)日：2006-10-12

申请号：US11376064

申请日：2006-03-16

Applicant: Naruhiro Masui ,  Hidetoshi Ema

Inventor： Naruhiro Masui ,  Hidetoshi Ema

IPC: H04L7/00

CPC classification number: H03L7/0995 ,  H04L7/0337 ,  H04L25/068

Abstract: Serially transferred data is over sampled with a multiphase clock signal generated as a result of shifting a predetermined frequency clock signal by a predetermined phase each, to obtain over sampling data; generating clock patterns, having mutually different phase states according to a data phase state of the over sampling data. A first phase pattern generated from the over sampling data is compared with a second phase pattern generated from the clock pattern, and the number of bits to extract from the over sampling data is controlled. A phase error of the over sampling data is detected based on the first phase pattern and the second phase pattern. Bits to extract from the over sampling data is selected to restore the data based on the phase state of the clock pattern and the phase error.

Abstract translation: 作为通过以预定的相位移动预定频率时钟信号而产生的多相时钟信号，对串行数据进行过采样，以获得过采样数据; 产生根据过采样数据的数据相位状态具有相互不同的相位状态的时钟模式。 将从过采样数据生成的第一相位模式与从时钟模式产生的第二相位模式进行比较，并控制从过采样数据中提取的位数。 基于第一相位图案和第二相位图案检测过采样数据的相位误差。 选择从过采样数据中提取的位，以基于时钟模式的相位状态和相位误差恢复数据。

公开(公告)号：US06954415B2

公开(公告)日：2005-10-11

申请号：US10606780

申请日：2003-06-27

Applicant: Naruhiro Masui ,  Hidetoshi Ema

Inventor： Naruhiro Masui ,  Hidetoshi Ema

IPC: G11B7/006 ,  G11B7/125 ,  H01S5/022 ,  H01S5/042 ,  G11B5/09

CPC classification number: G11B7/126 ,  G11B7/0062 ,  G11B7/1263 ,  G11B11/1053 ,  H01S5/0427 ,  H01S5/0683

Abstract: A light source drive which modulates a light source so as to cause the same to emit a light, includes: a superposition current generation part which generates a superposition current approximately corresponding to a charging/discharging current needed for a capacitance occurring in parallel to the light source for a predetermined time period near at least one of a rising-up part and a decaying-down part of a waveform of a drive current for the light source; and an addition/subtraction part which adds to or subtracts from the drive current the superposition current generated by the superposition current generation part.

Abstract translation: 调制光源以使其发光的光源驱动器包括：叠加电流产生部分，其产生大致对应于与光并行发生的电容所需的充电/放电电流的叠加电流 源于光源的驱动电流的波形的上升部分和衰减部分中的至少一个附近的预定时间段; 以及加法/减法部分，其从驱动电流增加或减去由叠加电流产生部分产生的叠加电流。