公开(公告)号：US07821910B2

公开(公告)日：2010-10-26

申请号：US12273674

申请日：2008-11-19

申请人： Kohei Nakata ,  Harumitsu Miyashita

发明人： Kohei Nakata ,  Harumitsu Miyashita

IPC分类号： G11B7/24

CPC分类号： G11B7/00745 ,  G11B7/005 ,  G11B7/0053 ,  G11B20/10222 ,  G11B20/1217 ,  G11B20/14 ,  G11B2020/1221 ,  G11B2020/1287 ,  G11B2220/2537

摘要： A big pattern for a run-in area which allows data reproduction to be performed stably even when the recording density of an optical disc is increased is provided. An optical disc according to the present invention includes tracks, each of which divided into a plurality of recording blocks. Each of the plurality of blocks includes a run-in area and a data area. In the run-in area, a prescribed run-in bit pattern is recordable; and in the data area, bit patterns having a plurality of bit lengths obtained by modulating data as a recording target in accordance with a prescribed modulation rule are recordable. In this optical disc, at least one of spatial frequencies corresponding to the bit patterns having the plurality of bit lengths is higher than a cutoff frequency. The run-in bit pattern recordable in the run-in area includes the bit patterns having the plurality of bit lengths, from which the bit pattern corresponding to the frequency higher than the OTF cutoff frequency has been excluded.

摘要翻译： 提供了即使当光盘的记录密度增加时也允许稳定地执行数据再现的运行区域的大图案。 根据本发明的光盘包括被分成多个记录块的轨道。 多个块中的每一个都包括导入区和数据区。 在跑步区域，可以记录规定的磨合位图案; 并且在数据区域中，可以记录具有根据规定的调制规则通过调制作为记录目标的数据而获得的多个位长度的位模式。 在该光盘中，对应于具有多个位长度的位模式的空间频率中的至少一个高于截止频率。 可以在导入区域中记录的流入位模式包括具有多个比特长度的比特模式，从而排除与高于OTF截止频率的频率对应的比特模式。

公开(公告)号：US07623586B2

公开(公告)日：2009-11-24

申请号：US10532468

申请日：2003-10-20

申请人： Harumitsu Miyashita ,  Takeshi Nakajima ,  Naohiro Kimura

发明人： Harumitsu Miyashita ,  Takeshi Nakajima ,  Naohiro Kimura

IPC分类号： H04L23/02 ,  H04L5/12

CPC分类号： G11B27/3027 ,  G11B20/10009 ,  G11B20/10037 ,  G11B20/10055 ,  G11B20/10222 ,  G11B20/10425 ,  G11B2020/1288 ,  G11B2220/2541 ,  G11B2220/2562 ,  H03L7/091 ,  H03L7/107 ,  H04L7/033 ,  H04L7/041

摘要： A frequency and phase control apparatus includes an analog/digital conversion section for converting a reproduction signal into a multiple bit digital signal based on a clock signal; a maximum likelihood decoding section for converting the multiple bit digital signal into a binary signal; a pattern detection section for detecting a pattern of the binary signal; and a determination section for determining whether or not the multiple bit digital signal and the clock signal are in synchronization with each other based on the detection result. When the determination result of the determination section indicates that the multiple bit digital signal and the clock signal are in synchronization with each other, the maximum likelihood decoding section generates a binary signal based on a first state transition rule; otherwise, the maximum likelihood decoding section generates a binary signal based on a second state transition rule.

摘要翻译： 频率相位控制装置包括：模拟/数字转换部分，用于基于时钟信号将再现信号转换成多位数字信号; 最大似然解码部分，用于将多位数字信号转换成二进制信号; 模式检测部分，用于检测二进制信号的模式; 以及确定部分，用于基于检测结果确定多位数字信号和时钟信号是否彼此同步。 当确定部分的确定结果指示多位数字信号和时钟信号彼此同步时，最大似然解码部分基于第一状态转换规则产生二进制信号; 否则，最大似然解码部分基于第二状态转换规则生成二进制信号。

公开(公告)号：US20090028019A1

公开(公告)日：2009-01-29

申请号：US12282439

申请日：2007-03-13

申请人： Harumitsu Miyashita ,  Kohei Nakata ,  Hiroshi Ueda ,  Youichi Ogura

发明人： Harumitsu Miyashita ,  Kohei Nakata ,  Hiroshi Ueda ,  Youichi Ogura

IPC分类号： G11B5/58

CPC分类号： G11B20/10009 ,  G11B7/0053 ,  G11B7/08523 ,  G11B2220/2537

摘要： An information reproduction device according to the present invention is a device for accessing a recording medium having first address information and second address information recorded thereon. The first address information is represented by a shape formed on the recording medium in advance; and the second address information is recorded on the recording medium together with data. The information reproduction device includes a head section for accessing the recording medium to generate a reproduction signal; a first detection section for detecting the first address information from the reproduction signal; a second detection section for detecting the second address information from the reproduction signal; and a control section for, based on a detection result of either the first detection section or the second detection section which detected the address information first, controlling an access after the detection to the recording medium.

摘要翻译： 根据本发明的信息再现装置是用于访问其上记录有第一地址信息和第二地址信息的记录介质的装置。 第一地址信息由形成在记录介质上的形状预先表示; 并且第二地址信息与数据一起被记录在记录介质上。 信息再现装置包括用于访问记录介质以产生再现信号的头部分; 第一检测部分，用于从再现信号中检测第一地址信息; 第二检测部分，用于从再现信号中检测第二地址信息; 以及控制部分，用于基于首先检测到地址信息的第一检测部分或第二检测部分的检测结果，控制检测到记录介质之后的访问。

公开(公告)号：US20080074969A1

公开(公告)日：2008-03-27

申请号：US11631937

申请日：2005-06-23

申请人： Harumitsu Miyashita ,  Yasumori Hino ,  Tetsuya Shihara

发明人： Harumitsu Miyashita ,  Yasumori Hino ,  Tetsuya Shihara

IPC分类号： G11B15/52

CPC分类号： G11B20/10009 ,  G11B7/00456 ,  G11B7/1267 ,  G11B20/10046 ,  G11B20/10481

摘要： It is an object to minimize the effect of the reproduction transmission path characteristics or optical characteristics of an optical head, and more suitably adjust recording conditions. The recording condition optimization method of the present invention involves optimizing recording conditions in the recording of information to an optical disk (100), comprising a recording step (1103) of recording a recording pattern including a plurality of recording marks to the optical disk using specific recording conditions, a reproduction step (1102) of reproducing the recording pattern recorded in the recording step (1103), an equalization characteristics setting step (1101) of setting waveform equalization characteristics according to the recording pattern, an equalization step (1105) of using the waveform equalization characteristics set in the equalization characteristics setting step (1101) to equalize the waveform of the reproduction signal reproduced in the reproduction step (1102), and an adjustment step (1104) of using the reproduction signal whose waveform has been equalized in the equalization step (1105) to adjust the recording conditions.

摘要翻译： 本发明的目的是最小化光头的再现传输路径特性或光学特性的影响，并且更适当地调节记录条件。 本发明的记录条件优化方法涉及将信息记录中的记录条件优化到光盘（100），其包括使用特定的记录步骤（1103）将包括多个记录标记的记录图案记录到光盘 记录条件，再现记录在记录步骤（1103）中的记录模式的再现步骤（1102），根据记录模式设置波形均衡特性的均衡特性设置步骤（1101），使用 均衡特性设定步骤（1101）中设定的波形均衡特性，用于均衡再现步骤（1102）中再现的再现信号的波形，以及使用其波形已被均衡的再现信号的调整步骤（1104） 均衡步骤（1105），以调节记录条件。

公开(公告)号：US06934233B2

公开(公告)日：2005-08-23

申请号：US10626607

申请日：2003-07-25

申请人： Harumitsu Miyashita ,  Shinichi Konishi ,  Atsushi Nakamura ,  Takeshi Nakajima ,  Junichi Minamino

发明人： Harumitsu Miyashita ,  Shinichi Konishi ,  Atsushi Nakamura ,  Takeshi Nakajima ,  Junichi Minamino

IPC分类号： G11B7/00 ,  G11B7/005 ,  G11B20/10

CPC分类号： G11B20/10009 ,  G11B7/005 ,  G11B20/10046 ,  G11B20/10055 ,  G11B20/10166 ,  G11B20/10296 ,  G11B2020/1484

摘要： A waveform equalizer for equalizing a waveform of a reproduction signal. A delay element delays a propagation of the reproduction signal. A plurality of multipliers multiply predetermined coefficients by the reproduction signal and the delayed propagation reproduction signal. A detector detects an asymmetry of the reproduction signal arising from physical profiles of each of the marks and the non-marks, and outputs a detection signal representing an amount of asymmetry. A discriminator outputs a discrimination signal in response to a discrimination of the marks and the non-marks. A calculator calculates a first coefficient multiplied by the reproduction signal of the marks based on the outputted detection signal, and calculates a second coefficient multiplied by the reproduction signal of the non-marks. A selector selects either the first or second coefficient, based upon the outputted discriminating signal.

摘要翻译： 用于均衡再现信号的波形的波形均衡器。 延迟元件延迟再现信号的传播。 多个乘法器通过再现信号和延迟的传播再现信号乘以预定系数。 检测器检测由每个标记和非标记的物理轮廓产生的再现信号的不对称性，并且输出表示不对称量的检测信号。 鉴别器响应于对标记和非标记的区分而输出鉴别信号。 计算器基于输出的检测信号计算乘以标记的再现信号的第一系数，并计算与非标记的再现信号相乘的第二系数。 选择器根据输出的鉴别信号选择第一或第二系数。

公开(公告)号：US20050128911A1

公开(公告)日：2005-06-16

申请号：US10981869

申请日：2004-11-05

申请人： Harumitsu Miyashita ,  Takeshi Nakajima ,  Mamoru Shoji ,  Yasumori Hino

发明人： Harumitsu Miyashita ,  Takeshi Nakajima ,  Mamoru Shoji ,  Yasumori Hino

IPC分类号： G11B7/004 ,  G11B7/0045 ,  G11B7/005 ,  G11B7/007 ,  G11B7/125 ,  G11B11/00 ,  G11B5/09

CPC分类号： G11B7/1267 ,  G11B7/0053 ,  G11B7/0062 ,  G11B7/00736

摘要： A recording/reproduction apparatus, comprising a first recording section for recording test information onto a medium using at least one recording power, a reproduction section for reproducing at least one test signal indicating the test information from the medium, and a second recording section for recording information onto the medium using one of the at least one recording power. The reproduction section comprises a decoding section for performing maximum likelihood decoding of the at least one test signal and generating at least one binary signal indicating a result of the maximum likelihood decoding, a calculation section for calculating a reliability of the result of the maximum likelihood decoding based on the at least one test signal and the at least one binary signal, and an adjustment section for adjusting a recording power for recording the information onto the medium to the one recording power based on the reliability.

摘要翻译： 一种记录/再现装置，包括用于使用至少一个记录功率将测试信息记录在介质上的第一记录部分，用于从介质再现指示测试信息的至少一个测试信号的再现部分和用于记录的第二记录部分 使用所述至少一个记录功率之一将信息传送到介质上。 再现部分包括：解码部分，用于对所述至少一个测试信号执行最大似然解码，并产生指示最大似然解码结果的至少一个二进制信号;计算部分，用于计算最大似然解码结果的可靠性 基于所述至少一个测试信号和所述至少一个二进制信号，以及调整部分，用于基于所述可靠性调整用于将所述信息记录到所述介质上的记录功率与所述一个记录功率。

公开(公告)号：US20050111318A1

公开(公告)日：2005-05-26

申请号：US10973780

申请日：2004-10-26

申请人： Takeshi Nakajima ,  Harumitsu Miyashita ,  Naohiro Kimura

发明人： Takeshi Nakajima ,  Harumitsu Miyashita ,  Naohiro Kimura

IPC分类号： G11B5/09 ,  G11B7/00 ,  G11B7/09 ,  G11B20/10 ,  G11B20/14 ,  G11B27/24 ,  H03L7/08 ,  H03L7/085 ,  H03L7/091

CPC分类号： G11B27/24 ,  G11B20/1403 ,  G11B2220/216 ,  G11B2220/218 ,  G11B2220/2562 ,  G11B2220/2575 ,  H03L7/085 ,  H03L7/091

摘要： An optical disc apparatus is provided, which comprises a signal detection section for detecting a wobble signal from a reproduced signal of an optical disc, and a generation section for generating a clock signal in synchronization with the wobble signal. The generation section comprises a first difference signal generation section for generating a first difference signal indicating a difference between a frequency of the wobble signal and a frequency of the clock signal, a period detection section for detecting a modulation period of the wobble signal based on the first difference signal, and an adjustment section for adjusting the frequency of the clock signal based on a predetermined signal other than the first difference signal during a modulation period, and adjusting the frequency of the clock signal based on the first difference signal during a period other than the modulation period.

摘要翻译： 提供了一种光盘装置，其包括用于从光盘的再现信号检测摆动信号的信号检测部分和用于与摆动信号同步地产生时钟信号的生成部分。 所述生成部分包括：第一差分信号生成部分，用于产生指示摆动信号的频率与时钟信号的频率之间的差异的第一差分信号;周期检测部分，用于基于所述摆动信号的调制周期检测所述摆动信号; 第一差分信号和调整部分，用于在调制周期期间基于除第一差分信号之外的预定信号调整时钟信号的频率，并且在其它时间段期间基于第一差分信号调整时钟信号的频率 比调制周期。

公开(公告)号：US06618337B2

公开(公告)日：2003-09-09

申请号：US09770778

申请日：2001-01-26

申请人： Harumitsu Miyashita ,  Shinichi Konishi ,  Takeshi Nakajima ,  Toshihiko Takahashi

发明人： Harumitsu Miyashita ,  Shinichi Konishi ,  Takeshi Nakajima ,  Toshihiko Takahashi

IPC分类号： G11B700

CPC分类号： G11B27/36 ,  G11B7/0045 ,  G11B7/005 ,  G11B27/24 ,  G11B27/3027 ,  G11B2220/216 ,  G11B2220/2525 ,  G11B2220/2575

摘要： An information recording and reproduction apparatus includes a recording section for recording data into a recording medium in accordance with address information recorded in the recording medium, a first reproduction section for reproducing at least one data including the data recorded in the recording medium in accordance with a first reproduction method to obtain at least one reproduced data, a second reproduction section for reproducing the address information in accordance with a second reproduction method to obtain reproduced address information, and a determination section for mapping the data to a specific reproduced data of the at least one reproduced data based on the address information and the reproduced address information, and comparing the data with the specific reproduced data to determine a recording condition of a region of the recording medium storing the data. The degree of influence of the recording condition of data recorded in the recording medium, on whether the data is correctly reproduced, is greater when the data is reproduced in accordance with the first reproduction method than with the second reproduction method.

公开(公告)号：US20140003211A1

公开(公告)日：2014-01-02

申请号：US13880359

申请日：2012-08-31

申请人： Ryoji Hirose ,  Harumitsu Miyashita

发明人： Ryoji Hirose ,  Harumitsu Miyashita

IPC分类号： G11B7/0045

CPC分类号： G11B7/00458

摘要： An optical read/write apparatus according to an embodiment includes: an optical head unit (2a, 2b) which focuses a write light beam and a read light beam onto an optical storage medium (100) and which generates a signal based on the light beam that has been reflected from the optical storage medium; and a control section (6) which controls the optical head unit (2a, 2b) so that the optical head unit records a mark on the optical storage medium by irradiating the optical storage medium with the write light beam and reads the recorded mark on the optical storage medium with the read light beam. After having started to record the mark on the optical storage medium by irradiating the optical storage medium with the write light beam and before forming the recorded mark completely, the optical head unit (2a, 2b) reads the recorded mark on the optical storage medium with the read light beam.

摘要翻译： 根据实施例的光学读/写装置包括：将写入光束和读取光束聚焦到光学存储介质（100）上并且基于光束产生信号的光学头单元（2a，2b） 已从光学存储介质反射出来; 以及控制部分（6），其控制光学头单元（2a，2b），使得光学头单元通过用光学光束照射光学存储介质来在光学存储介质上记录标记，并读取记录标记 具有读取光束的光学存储介质。 在通过用写入光束照射光学存储介质并且在完全形成记录标记之前开始在光学存储介质上记录标记之后，光学头单元（2a，2b）在光学存储介质上读取记录的标记， 读光束。

公开(公告)号：US08400894B2

公开(公告)日：2013-03-19

申请号：US13132159

申请日：2010-09-14

申请人： Hiroaki Shigematsu ,  Harumitsu Miyashita ,  Yoshiyasu Nakayama

发明人： Hiroaki Shigematsu ,  Harumitsu Miyashita ,  Yoshiyasu Nakayama

IPC分类号： G11B15/52

CPC分类号： G11B7/1267 ,  G11B7/00736 ,  G11B2007/0013

摘要： The present invention provides a method for writing data on a multilayer optical disc with N information storage layers (where N is an integer and N≧2). The kth deepest one (where k is an integer and 1≦k≦N) of the storage layers of the multilayer optical disc is called a kth information storage layer. The method includes the steps of: (A) finding the number of layers that an optical disc loaded into an optical disc drive has (disc type recognition); if the number of layers is X (which is an integer and X≧2), (B) tentatively writing data on a test write area of an mth information storage layer (where m is an integer and 1≦m≦X−1), thereby determining a provisional initial optical recording power (performing OPC); (C) choosing an appropriate correction coefficient according to the level of a target layer, on which data needs to be written, and correcting the provisional initial optical recording power based on the correction coefficient chosen, thereby determining an initial optical recording power; and (D) starting writing the data on the target layer with the initial optical recording power.

摘要翻译： 本发明提供一种用于在具有N个信息存储层（其中N是整数，N≥2）的多层光盘上写入数据的方法。 多层光盘的存储层的第k个最深的（其中k是整数，1＆nlE; k＆nlE; N）被称为第k个信息存储层。 该方法包括以下步骤：（A）找到装入光盘驱动器的光盘的层数（盘型识别）; 如果层数为X（X为整数，X≥2），（B）暂时将数据写入第m个信息存储层的测试写入区（m为1和nlE; m＆nlE; X-1） 从而确定暂时的初始光学记录功率（执行OPC）; （C）根据需要写入数据的目标层的电平选择适当的校正系数，并且基于所选择的校正系数校正临时初始光学记录功率，由此确定初始光学记录功率; 和（D）以初始光学记录功率开始在目标层上写入数据。