公开(公告)号：US20130148996A1

公开(公告)日：2013-06-13

申请号：US13818726

申请日：2011-09-02

Applicant: Naruhiro Masui

Inventor： Naruhiro Masui

IPC: G03G15/01

CPC classification number: G03G15/0131 ,  G03G15/0189 ,  G03G15/5058 ,  G03G2215/0161 ,  H04N1/506

Abstract: An image forming apparatus includes an intermediate transfer body; a generating unit generating test pattern data; a storage unit storing a color displacement amount; a correcting unit correcting the test pattern data and image data based on the color displacement amount currently stored in the storage unit; a forming unit forming a test pattern based on the test pattern data corrected by the correcting unit on the intermediate transfer body at predetermined intervals, and forming an image based on the image data corrected by the correcting unit on the intermediate transfer body; a detecting unit detecting the test pattern formed on the intermediate transfer body; an updating unit determining an amount of change of the color displacement amount from a result of detection by the detecting unit, and updating the color displacement amount stored in the storage unit by using the amount of change of the color displacement amount.

Abstract translation: 图像形成装置包括中间转印体; 产生测试图案数据的生成单元; 存储颜色位移量的存储单元; 校正单元，基于当前存储在存储单元中的颜色位移量来校正测试图案数据和图像数据; 形成单元，其基于由所述校正单元在所述中间转印体上以预定间隔校正的测试图案数据形成测试图案，并且基于由所述校正单元校正的图像数据在所述中间转印体上形成图像; 检测单元，检测形成在中间转印体上的测试图案; 更新单元，根据检测单元的检测结果确定颜色位移量的变化量，并且通过使用颜色位移量的变化量来更新存储在存储单元中的颜色位移量。

公开(公告)号：US20110221739A1

公开(公告)日：2011-09-15

申请号：US13042006

申请日：2011-03-07

Applicant: NARUHIRO MASUI

Inventor： NARUHIRO MASUI

IPC: G06F3/038

CPC classification number: H04N1/053 ,  G02B26/123 ,  G02B26/127 ,  G03G15/04072 ,  G06K15/1219 ,  H04N1/1135 ,  H04N1/506 ,  H04N2201/0471 ,  H04N2201/04729 ,  H04N2201/04734 ,  H04N2201/04744 ,  H04N2201/04768 ,  H04N2201/04772 ,  H04N2201/04774 ,  H04N2201/04775 ,  H04N2201/04784 ,  H04N2201/04789 ,  H04N2201/04793 ,  H04N2201/04794 ,  H04N2201/04798

Abstract: A pixel clock generating device includes a time interval detection unit detecting a time interval between a first signal and a second signal in each of cyclically repeating N (≧2) time periods; a comparing unit cyclically selecting a target value from N target values corresponding to the N time periods and outputting an error indicating a difference between the detected time interval and the selected target value for each of the N time periods; a frequency calculation unit correcting a frequency of the pixel clock signal based on the error and cyclically generating a frequency specification signal indicating the corrected frequency for each of the N time periods; a high-frequency clock generating unit generating a high-frequency clock signal; and a pixel clock generating unit generating a pixel clock signal based on the frequency specification signal and the high-frequency clock signal.

Abstract translation: 像素时钟发生装置包括时间间隔检测单元，其检测周期性地重复的N（≥2）个时间段中的每一个中的第一信号和第二信号之间的时间间隔; 比较单元，从与N个时段对应的N个目标值周期性地选择目标值，并且输出针对所述N个时间段中的每一个的所述检测到的时间间隔与所选择的目标值之间的差异的误差; 频率计算单元，基于所述误差校正所述像素时钟信号的频率，并且循环地生成指示所述N个时间段中的每一个的校正频率的频率指定信号; 产生高频时钟信号的高频时钟发生单元; 以及像素时钟生成单元，其基于频率指定信号和高频时钟信号生成像素时钟信号。

公开(公告)号：US07512050B2

公开(公告)日：2009-03-31

申请号：US10541591

申请日：2004-10-15

Applicant: Kenya Yokoi ,  Naruhiro Masui

Inventor： Kenya Yokoi ,  Naruhiro Masui

IPC: G11B7/0045

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

Abstract: A first trial write process obtains an optimum recording power of a test pattern even with respect to data having different rules for the recording waveforms corresponding n type data length sets, and a second trial write process using this optimum recording power obtains optimum pulse width or optimum pulse edge position separately for each data length set. 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: 即使对于与n种数据长度组相对应的记录波形的规则不同的数据，第一试写法也可获得测试图案的最佳记录功率，并且使用该最佳记录功率的第二试写步骤获得最佳脉冲宽度或最佳 脉冲边缘位置分别针对每个数据长度设置。 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：US20080143814A1

公开(公告)日：2008-06-19

申请号：US11793594

申请日：2006-04-20

Applicant: Naruhiro Masui ,  Hidetoshi Ema ,  Nobunari Tsukamoto

Inventor： Naruhiro Masui ,  Hidetoshi Ema ,  Nobunari Tsukamoto

IPC: B41J2/435

CPC classification number: G02B26/127 ,  G06K15/1219 ,  H04N1/0473 ,  H04N2201/0082 ,  H04N2201/04755 ,  H04N2201/04791 ,  H04N2201/04794

Abstract: A comparator compares a time interval between a first synchronization signal and a second synchronization signal with a target value, and outputs an error therebetween. A frequency calculator calculates a set value of a pixel clock frequency based on the error output from the comparator, and outputs a frequency specification signal for specifying a pixel clock frequency according to the calculated set value. A frequency divider divides a high frequency clock generated by a high frequency clock generator by a frequency division ratio based on the frequency specification signal output from the frequency calculator, and generates the pixel clock.

Abstract translation: 比较器将第一同步信号和第二同步信号之间的时间间隔与目标值进行比较，并在其间输出误差。 频率计算器基于从比较器输出的误差来计算像素时钟频率的设定值，并根据计算出的设定值输出用于指定像素时钟频率的频率指定信号。 分频器基于从频率计算器输出的频率指定信号，通过分频比将由高频时钟发生器产生的高频时钟分频，并生成像素时钟。

公开(公告)号：US20070206234A1

公开(公告)日：2007-09-06

申请号：US11681561

申请日：2007-03-02

Applicant: Dan Ozasa ,  Naruhiro Masui

Inventor： Dan Ozasa ,  Naruhiro Masui

IPC: 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：US07193957B2

公开(公告)日：2007-03-20

申请号：US11213829

申请日：2005-08-30

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。

公开(公告)号：US07164637B2

公开(公告)日：2007-01-16

申请号：US10938945

申请日：2004-09-13

Applicant: Naruhiro Masui

Inventor： Naruhiro Masui

IPC: G11B7/00

CPC classification number: G11B7/126 ,  G11B7/0062 ,  G11B7/1267

Abstract: In a method of transforming a recording power level into multi-levels by using an extra recording power level, the optimum value of each recording power level is obtained, thereby achieving recording with good accuracy. By including a first test writing step (S1–S3) of performing test writing of predetermined first test data while varying the recording power in stages, and calculating an optimum recording power from the reproduction signal, and a second test writing step (S4–S6) of setting the recording power to the calculated optimum recording power and performing test writing of predetermined second test data while varying in stages the extra recording power applied in a part of a time period in which the optimum recording power is applied, and calculating an optimum extra recording power from the reproduction signal, the recording power and the extra recording power are separately calculated by test writing, and with which information is recorded. Hence, it is possible to form the shape of a recording mark and the mark position with good accuracy. Thus, recording can be performed with good accuracy.

Abstract translation: 在通过使用额外的记录功率电平将记录功率电平变换为多电平的方法中，获得每个记录功率电平的最佳值，从而以高精度实现记录。 通过包括在分级地改变记录功率的同时执行预定的第一测试数据的测试写入并根据再现信号计算最佳记录功率的第一测试写入步骤（S1-S3）和第二测试写入步骤（S 4 -S 6），其将记录功率设定为所计算的最佳记录功率，并且在施加了最佳记录功率的时间段的一部分中施加的额外记录功率分级时，执行预定的第二测试数据的测试写入， 并且根据再现信号计算最佳额外记录功率，通过测试写入分别计算记录功率和额外记录功率，并记录哪个信息。 因此，可以以高精度形成记录标记的形状和标记位置。 因此，可以以高精度执行记录。

公开(公告)号：US06687206B1

公开(公告)日：2004-02-03

申请号：US09584693

申请日：2000-06-01

Applicant: Naruhiro Masui

Inventor： Naruhiro Masui

IPC: G11B509

CPC classification number: G11B27/24 ,  G11B7/00456 ,  G11B7/0053 ,  G11B7/00745 ,  G11B20/1403 ,  G11B2220/218 ,  G11B2220/2562

Abstract: In an information recording method and apparatus, a sequence of sync frames indicative of data is recorded onto tracks of an optical recording medium. In the recording medium, prepits are formed on lands between the tracks at given intervals, and sync patterns, providing synchronization on a sync-frame basis, are inserted in the sync frames such that each sync pattern has a length in a track direction larger than a length of one of the prepits and a position of each sync pattern matches with a position of at least one of the prepits. Codes that represent sync patterns for the sync frames are selected such that each sync pattern is formed as a space on the recording medium. Modulation codes are generated based on the sync frames in which the selected codes are inserted, by modulating the sync frames containing the selected codes in accordance with a predetermined modulation scheme. A sequence of recording pulses is generated by converting the modulation codes through a predetermined conversion scheme. A prepit position signal is detected from one of the prepits for each of the sync frames during the writing of the recording pulses to the recording medium, so that a write position control is performed based the detected prepit position signal. Further disclosed in an optical recording medium which is appropriate for use with the information recording method and apparatus.