公开(公告)号：US08862002B2

公开(公告)日：2014-10-14

申请号：US13609737

申请日：2012-09-11

Applicant: Norikazu Igarashi ,  Naruhiro Masui

Inventor： Norikazu Igarashi ,  Naruhiro Masui

IPC: G03G15/00 ,  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：US08493578B2

公开(公告)日：2013-07-23

申请号：US12998063

申请日：2009-09-15

Applicant: Naruhiro Masui

Inventor： Naruhiro Masui

IPC: B41J2/435 ,  H04N1/40

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：US07200091B2

公开(公告)日：2007-04-03

申请号：US10274193

申请日：2002-10-21

Applicant: Naruhiro Masui ,  Hidetoshi Ema

Inventor： Naruhiro Masui ,  Hidetoshi Ema

IPC: G11B20/10

CPC classification number: G11B7/1263 ,  G11B7/0062 ,  G11B11/1053

Abstract: A light source driving unit includes a modulating signal generating section generating modulating signals based on driving waveform generating information of a light source, a current source selecting section selecting one or more currents output from current sources based on the modulating signals, a light source driving section generating a current having multi-levels based on the one or more currents selected and supplying the generated current to the light source to drive the light source so that light in multi-levels is generated from the light source, and a cancelling section adding a signal error amount which cancels differences in amounts of signal delays generated between the modulating signal generating section and the light source driving section at a stage prior to the current source selecting section.

Abstract translation: 光源驱动单元包括：调制信号产生部分，基于光源的驱动波形产生信息产生调制信号;电流源选择部分，根据调制信号选择从电流源输出的一个或多个电流;光源驱动部分 基于所选择的一个或多个电流产生具有多电平的电流，并将所产生的电流提供给光源以驱动光源，使得从光源产生多电平的光;以及消除部分， 误差量，其消除在当前源选择部分之前的阶段在调制信号产生部分和光源驱动部分之间产生的信号延迟量的差异。

公开(公告)号：US20070030785A1

公开(公告)日：2007-02-08

申请号：US11581150

申请日：2006-10-16

Applicant: Naruhiro Masui ,  Hidetoshi Ema

Inventor： Naruhiro Masui ,  Hidetoshi Ema

IPC: G11B20/10

CPC classification number: G11B7/1263 ,  G11B7/0062 ,  G11B11/1053

Abstract: A light source driving unit includes a modulating signal generating section generating modulating signals based on driving waveform generating information of a light source, a current source selecting section selecting one or more currents output from current sources based on the modulating signals, a light source driving section generating a current having multi-levels based on the one or more currents selected and supplying the generated current to the light source to drive the light source so that light in multi-levels is generated from the light source, and a cancelling section adding a signal error amount which cancels differences in amounts of signal delays generated between the modulating signal generating section and the light source driving section at a stage prior to the current source selecting section.

公开(公告)号：US20060245336A1

公开(公告)日：2006-11-02

申请号：US10541591

申请日：2004-10-15

Applicant: Kenya Yokoi ,  Naruhiro Masui

Inventor： Kenya Yokoi ,  Naruhiro Masui

IPC: G11B7/00

CPC classification number: G11B7/1267 ,  G11B7/0062 ,  G11B7/00736

Abstract: [Problem to be Solved]Accurate recording is achieved by obtaining each optimum pulse width and pulse edge position in a recording method that performs recording according to the rules of recording waveform using different pulse widths and pulse edge positions for individual data length sets with respect to the data length sets having the different relationship between the number of pulses and the data length. [Means for Solving the Problem]The first trial write process obtains an optimum recording power of a test pattern (S1 through S3) even with respect to data having different rules for the recording waveforms corresponding n type data length sets, and the second trial write process using this optimum recording power obtains optimum pulse width or optimum pulse edge position separately for each data length set (S4 through S6). Based on the optimum recording power and optimum recording waveform obtained by these trial write processes, recording operation is performed so as to form all the data lengths with satisfactory accuracy, thereby making it possible to obtain a proper reproduced signal.

Abstract translation: [待解决的问题]通过在记录方法中获得每个最佳脉冲宽度和脉冲边缘位置来实现准确的记录，所述记录方法根据记录波形的规则，使用不同的脉冲宽度和脉冲边缘位置对于各个数据长度集相对于 数据长度集具有脉冲数与数据长度之间的不同关系。 [解决问题的手段]即使对于与n种数据长度集合对应的记录波形的规则不同的数据，第一试写法也能够获得测试图案的最佳记录功率（S 1至S 3），第二试写 使用该最佳记录功率的试写步骤分别为每个数据长度集合（S 4至S 6）分别获得最佳脉冲宽度或最佳脉冲边沿位置。 基于通过这些试写法处理获得的最佳记录功率和最佳记录波形，执行记录操作以便以令人满意的精度形成所有数据长度，从而可以获得适当的再现信号。

公开(公告)号：US20050135527A1

公开(公告)日：2005-06-23

申请号：US11002885

申请日：2004-12-03

Applicant: Naruhiro Masui ,  Hidetoshi Ema

Inventor： Naruhiro Masui ,  Hidetoshi Ema

IPC: H04L25/08 ,  H04L7/033 ,  H04L7/00

CPC classification number: H04L7/0338

Abstract: A data recovery method includes the steps of: (a) oversampling data that have been transmitted serially in sync with a first clock of frequency f1, using a multiphase clock generated by shifting a phase of a second clock of frequency f2 at a prescribed interval, the second frequency f2 of the multiphase clock being at or below the first frequency f1; (b) extracting f1/f2 bits on average from the oversampled data; and (c) recovering the extracted bits to restore the received data.

Abstract translation: 数据恢复方法包括以下步骤：（a）使用通过将频率f 2的第二时钟的相位移位到规定的频率而产生的多相时钟，对与频率f 1的第一时钟同步地串行发送的数据进行过采样 多相时钟的第二频率f 2处于或低于第一频率f 1; （b）从过采样数据平均提取f 1 / f 2比特; 和（c）恢复提取的比特以恢复所接收的数据。

公开(公告)号：US09387671B2

公开(公告)日：2016-07-12

申请号：US14695493

申请日：2015-04-24

Applicant: Naruhiro Masui

Inventor： Naruhiro Masui

IPC: B41J29/38 ,  B41J2/045

CPC classification number: B41J2/04581 ,  B41J2/04506 ,  B41J2/04563 ,  B41J2/04586 ,  B41J2/04588 ,  B41J2/04593 ,  B41J2/04596

Abstract: The invention is concerning a head driving device that drives a recording head including a plurality of nozzles and a plurality of pressure generating elements corresponding to the respective nozzles. The head driving device comprises: a plurality of drive waveform generating units corresponding to the respective pressure generating elements, wherein the drive waveform generating units drive the respective pressure generating elements on the basis of pieces of drive waveform information that are set for the respective nozzles so as to approximately equalize ejection characteristics of droplets ejected from the nozzles.

Abstract translation: 本发明涉及一种驱动包括多个喷嘴的记录头和对应于各个喷嘴的多个压力产生元件的头驱动装置。 头驱动装置包括：多个对应于各个压力产生元件的驱动波形产生单元，其中驱动波形生成单元基于为各个喷嘴设定的多条驱动波形信息驱动各压力发生元件， 大致均衡从喷嘴喷出的液滴的喷射特性。

公开(公告)号：US07746971B2

公开(公告)日：2010-06-29

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生成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：US07518969B2

公开(公告)日：2009-04-14

申请号：US11581110

申请日：2006-10-16

Applicant: Naruhiro Masui ,  Hidetoshi Ema

Inventor： Naruhiro Masui ,  Hidetoshi Ema

IPC: G11B20/10

CPC classification number: G11B7/1263 ,  G11B7/0062 ,  G11B11/1053

Abstract: A light source driving unit includes a modulating signal generating section generating modulating signals based on driving waveform generating information of a light source, a current source selecting section selecting one or more currents output from current sources based on the modulating signals, a light source driving section generating a current having multi-levels based on the one or more currents selected and supplying the generated current to the light source to drive the light source so that light in multi-levels is generated from the light source, and a cancelling section adding a signal error amount which cancels differences in amounts of signal delays generated between the modulating signal generating section and the light source driving section at a stage prior to the current source selecting section.

Abstract translation: 光源驱动单元包括：调制信号产生部分，基于光源的驱动波形产生信息产生调制信号;电流源选择部分，根据调制信号选择从电流源输出的一个或多个电流;光源驱动部分 基于所选择的一个或多个电流产生具有多电平的电流，并将所产生的电流提供给光源以驱动光源，使得从光源产生多电平的光;以及消除部分， 误差量，其消除在当前源选择部分之前的阶段在调制信号产生部分和光源驱动部分之间产生的信号延迟量的差异。

公开(公告)号：US07480230B2

公开(公告)日：2009-01-20

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.

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。