公开(公告)号：US20050030863A1

公开(公告)日：2005-02-10

申请号：US10937285

申请日：2004-09-10

Applicant: Naruhiro Masui

Inventor： Naruhiro Masui

IPC: G11B7/0045 ,  G11B5/09 ,  G11B7/006 ,  G11B7/125 ,  G11B11/00

CPC classification number: G11B7/1267 ,  G11B7/0045 ,  G11B7/0062

Abstract: An information recording method is disclosed, wherein different optimum recording power levels are determined for different mark lengths. At a first trial writing process, first predetermined test data, from which a specific pattern, e.g., 3T is removed, are written with recording power levels being shifted, and a first optimum recording power level is determined based on a reproduction signal of the recorded first test data. Then, at a second trial writing process, second predetermined test data that are constituted by 3T marks are written with the recording power level for the 3T marks being shifted, and with the recording power level for marks other than the 3T marks being set at the first optimum recording level, and a second optimum recording power level for the 3T marks is determined based on a reproduction signal of the recorded second test data.

Abstract translation: 公开了一种信息记录方法，其中针对不同的标记长度确定不同的最佳记录功率电平。 在第一次试用写入处理中，以记录功率电平被移位的方式写入特定模式（例如，3T被去除）的第一预定测试数据，并且基于所记录的再现信号确定第一最佳记录功率电平 第一个测试数据。 然后，在第二试写处理中，由3T标记构成的第二预定测试数据被写入具有3T标记被移位的记录功率电平，并且除了3T标记之外的标记的记录功率电平被设置在 基于记录的第二测试数据的再现信号来确定第一最佳记录级别和用于3T标记的第二最佳记录功率电平。

公开(公告)号：US06600712B1

公开(公告)日：2003-07-29

申请号：US09334636

申请日：1999-06-17

Applicant: Naruhiro Masui ,  Kenya Yokoi

Inventor： Naruhiro Masui ,  Kenya Yokoi

IPC: G11B700

CPC classification number: G11B7/126 ,  G11B7/0045

Abstract: An optical information recording method and apparatus which records information on a recording medium by irradiating the recording medium with an irradiation light of a recording power to form a recorded-mark on the recording medium such that reflection coefficient from an area of the recorded-mark is different than a reflection coefficient from an area of the recording medium where the recorded-mark is not formed by a changing power of the irradiation light. Information is recorded by modulating the irradiation light according to the information for recording, forming a recorded-mark on the recording medium by changing the power of the irradiation light between a recording power and a non-recording power, receiving reflection light of the irradiation light reflected by the recording medium and producing a corresponding light signal, determining a state of the recorded-mark based upon the light signal produced during a predetermined period of time immediately after the irradiation light changes from the recording power to the non-recording power, and controlling the recording power of the irradiation light according to the state of the recorded-mark.

Abstract translation: 一种光学信息记录方法和装置，其通过用记录功率的照射光照射记录介质以在记录介质上形成记录标记，使得来自记录标记的区域的反射系数为 不同于来自记录介质的区域的反射系数，其中记录标记不由照射光的变化的功率形成。 通过根据用于记录的信息调制照射光来记录信息，通过改变记录功率和非记录功率之间的照射光的功率，在记录介质上形成记录标记，接收照射光的反射光 由记录介质反射并产生对应的光信号，基于在照射光从记录功率改变到非记录功率之后的预定时间段期间产生的光信号来确定记录标记的状态，以及 根据记录标记的状态控制照射光的记录功率。

公开(公告)号：US06556523B1

公开(公告)日：2003-04-29

申请号：US09537894

申请日：2000-03-29

Applicant: Naruhiro Masui

Inventor： Naruhiro Masui

IPC: G11B700

CPC classification number: G11B27/24 ,  G11B7/0053 ,  G11B7/24082 ,  G11B7/24085 ,  G11B20/10009 ,  G11B20/10046 ,  G11B20/10222 ,  G11B20/1403 ,  G11B2020/1239 ,  G11B2020/1274 ,  G11B2020/1287 ,  G11B2220/218 ,  G11B2220/2566

Abstract: A wobble-signal detecting device detects a wobble signal based on a signal which is the difference between outputs of two divisions of a light receiving device. These two divisions are located on both sides of a line parallel to a target portion of an information recording track. This light receiving device receives light reflected by a recording medium as a result of an optical beam being incident on the recording medium. This recording medium contains the information recording track, which wobbles at a predetermined frequency, and has pre-pits formed at predetermined intervals in areas between the information recording tracks. This light receiving device comprises a pre-pit controlling portion which removes or reduces the pre-pit components of the signal which is the difference between the outputs of the two divisions of the light receiving device, and outputs a pre-pit-component-controlled signal; and a wobble-frequency-component extracting portion which extracts wobble-frequency components from the pre-pit-component-controlled signal and outputs a wobble-frequency-component signal, the wobble signal being obtained based on the wobble-frequency-component signal.

Abstract translation: 摆动信号检测装置基于作为光接收装置的两个部分的输出之间的差的信号来检测摆动信号。 这两个分区位于与信息记录轨道的目标部分平行的行的两侧。 该光接收装置接收由于光束入射到记录介质上而被记录介质反射的光。 该记录介质包含以预定频率摆动的信息记录磁道，并且在信息记录磁道之间的区域中具有以预定间隔形成的预凹陷。 该光接收装置包括：预凹坑控制部，其去除或减少作为光接收装置的两个部分的输出之间的差的信号的预凹陷分量，并输出预凹陷分量控制 信号; 以及摆频分量提取部分，其从所述预凹陷分量控制信号中提取摆频分量，并输出摆动频率分量信号，所述摆动信号是基于所述摆频分量信号获得的。

公开(公告)号：US10166766B2

公开(公告)日：2019-01-01

申请号：US15448046

申请日：2017-03-02

Applicant: Naruhiro Masui

Inventor： Naruhiro Masui

IPC: B41J29/38 ,  B41J2/045

Abstract: A head driving device drives a liquid ejection head. The liquid ejection head includes a plurality of nozzles and a plurality of pressure generating devices provided respectively corresponding to the nozzles. The head driving device includes a driving-waveform correcting unit configured to correct driving waveform data that defines ejection characteristics of liquid to be ejected from the nozzle based on interference patterns expressing variations in the ejection characteristics caused by an interference occurring in the nozzle.

公开(公告)号：US09030517B2

公开(公告)日：2015-05-12

申请号：US13042006

申请日：2011-03-07

Applicant: Naruhiro Masui

Inventor： Naruhiro Masui

IPC: B41J2/435 ,  H04N1/053 ,  G02B26/12 ,  G06K15/12 ,  H04N1/113 ,  H04N1/50 ,  G03G15/04

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：US09020406B2

公开(公告)日：2015-04-28

申请号：US14101504

申请日：2013-12-10

Applicant: Norikazu Igarashi ,  Naruhiro Masui

Inventor： Norikazu Igarashi ,  Naruhiro Masui

IPC: G03G15/01 ,  G03G15/00

CPC classification number: G03G15/55 ,  G03G15/5058 ,  G03G2215/0129 ,  G03G2215/0161

Abstract: An image forming apparatus includes a color registration error amount calculation unit that calculates a color registration error amount from a first test pattern; a correction information obtaining unit that obtains a correction information for correcting an image on a back surface based on previously obtained contraction information of a printing paper after printing an image on a front surface when printing on both surfaces; and an image data correction unit that corrects the image on the back surface based on the color registration error amount calculated by the color registration error amount and the correction information obtained by the correction information obtaining unit.

Abstract translation: 一种图像形成装置，包括从第一测试图案计算颜色配准误差量的颜色配准误差量计算单元; 校正信息获取单元，当在两个表面上打印时，在基于先前获得的打印纸的收缩信息在前表面上打印图像之后，获得用于校正背面上的图像的校正信息; 以及图像数据校正单元，其基于由颜色配准误差量计算的颜色配准误差量和由校正信息获取单元获得的校正信息来校正背面上的图像。

公开(公告)号：US08867973B2

公开(公告)日：2014-10-21

申请号：US13818726

申请日：2011-09-02

Applicant: Naruhiro Masui

Inventor： Naruhiro Masui

IPC: G03G15/01 ,  G03G15/00 ,  H04N1/50

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：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：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。