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。

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：US07791634B2

公开(公告)日：2010-09-07

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：US07684531B2

公开(公告)日：2010-03-23

申请号：US11002885

申请日：2004-12-03

Applicant: Naruhiro Masui ,  Hidetoshi Ema

Inventor： Naruhiro Masui ,  Hidetoshi Ema

IPC: 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）使用通过以规定间隔移位频率f2的第二时钟的相位而产生的多相时钟，对与频率f1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f2处于或低于第一频率f1; （b）从过采样数据中平均提取f1 / f2位; 和（c）恢复提取的比特以恢复所接收的数据。

公开(公告)号：US07573790B2

公开(公告)日：2009-08-11

申请号：US11581150

申请日：2006-10-16

Applicant: Naruhiro Masui ,  Hidetoshi Ema

Inventor： Naruhiro Masui ,  Hidetoshi Ema

IPC: G11B15/52

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：US07349303B2

公开(公告)日：2008-03-25

申请号：US10720230

申请日：2003-11-25

Applicant: Naruhiro Masui

Inventor： Naruhiro Masui

IPC: G11B7/0045

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.

Abstract translation: 在信息记录方法和装置中，指示数据的同步帧序列记录在光记录介质的轨道上。 在记录介质中，以给定间隔在轨道之间的平台上形成预凹坑，并且以同步帧为基础提供同步的同步图案被插入到同步帧中，使得每个同步图案的轨道方向上的长度大于 预定坑之一的长度和每个同步模式的位置与至少一个预凹坑的位置相匹配。 选择表示同步帧的同步模式的代码，使得每个同步模式形成为记录介质上的空间。 通过根据预定的调制方式调制包含所选择的代码的同步帧，基于插入所选择的代码的同步帧来产生调制码。 通过将调制码转换成规定的转换方式，生成记录脉冲序列。 在将记录脉冲写入记录介质期间，对于每个同步帧的预制凹坑中的一个检测预位置信号，从而基于检测到的预置位置信号执行写入位置控制。 进一步在适用于信息记录方法和装置的光记录介质中公开。

公开(公告)号：US07313075B2

公开(公告)日：2007-12-25

申请号：US10408367

申请日：2003-04-08

Applicant: Naruhiro Masui ,  Kenya Yokoi

Inventor： Naruhiro Masui ,  Kenya Yokoi

IPC: G11B7/00

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。