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41. 发明授权

US07417815B2 Recording control apparatus, recording and reproduction apparatus, and recording control method 有权
公开(公告)号：US07417815B2
公开(公告)日：2008-08-26
申请号：US11283367
申请日：2005-11-17
申请人： Harumitsu Miyashita , Takeshi Nakajima , Naohiro Kimura
发明人： Harumitsu Miyashita , Takeshi Nakajima , Naohiro Kimura
IPC分类号： G11B5/035 , G11B7/00
CPC分类号： G11B7/0062 , G11B7/00456 , G11B20/10009 , G11B20/10055 , G11B20/10111 , G11B20/10481 , G11B20/1403
摘要： A recording control apparatus includes a waveform rectification section for receiving a digital signal generated from an analog signal representing information reproduced from an information recording medium, and rectifying a waveform of the digital signal; a maximum likelihood decoding section for performing maximum likelihood decoding of the digital signal having the waveform thereof rectified, and generating a binary signal representing a result of the maximum likelihood decoding; a reliability calculation section for calculating a reliability of the result of the maximum likelihood decoding based on the digital signal having the waveform thereof rectified and the binary signal; and an adjusting section for adjusting a shape of a recording signal for recording the information on the information recording medium based on the calculated reliability.

42. 发明申请

US20070177468A1 Access unit, access method, access program, and control unit 有权
标题翻译：访问单元，访问方式，访问程序和控制单元
公开(公告)号：US20070177468A1
公开(公告)日：2007-08-02
申请号：US10591327
申请日：2005-10-21
申请人： Harumitsu Miyashita , Yasumori Hino , Tetsuya Shihara
发明人： Harumitsu Miyashita , Yasumori Hino , Tetsuya Shihara
IPC分类号： G11B21/08
CPC分类号： G11B7/1267 , G11B7/00736
摘要： An access unit, an access method, an access program and a control unit are provided which are capable of shortening the seek time of an optical head for a test record and a test regeneration. A record medium 200 includes a user area for recording user data which can be recorded and regenerated based on an instruction given by a user; a recording-system circuit section 120 records test data based on a predetermined test condition in the user area; a regeneration-system circuit section 130 reads the test data recorded in the user area by the recording-system circuit section 120; and a system control circuit 102 refers to the test data read by the regeneration-system circuit section 130 and adjusts an access parameter for accessing the record medium 200.
摘要翻译：提供一种存取单元，访问方法，访问程序和控制单元，其能够缩短用于测试记录和测试再生的光学头的寻道时间。记录介质200包括用于记录可以基于用户给出的指令来记录和再生的用户数据的用户区域; 记录系统电路部分120根据用户区域中的预定测试条件记录测试数据; 再生系统电路部分130通过记录系统电路部分120读取记录在用户区域中的测试数据; 并且系统控制电路102参考由再生系统电路部分130读取的测试数据，并调整用于访问记录介质200的访问参数。

43. 发明申请

US20060067189A1 Recording control apparatus, recording and reproduction apparatus, and recording control method 有权
公开(公告)号：US20060067189A1
公开(公告)日：2006-03-30
申请号：US11283367
申请日：2005-11-17
申请人： Harumitsu Miyashita , Takeshi Nakajima , Naohiro Kimura
发明人： Harumitsu Miyashita , Takeshi Nakajima , Naohiro Kimura
IPC分类号： G11B20/10 , G11B27/36
CPC分类号： G11B7/0062 , G11B7/00456 , G11B20/10009 , G11B20/10055 , G11B20/10111 , G11B20/10481 , G11B20/1403
摘要： A recording control apparatus includes a waveform rectification section for receiving a digital signal generated from an analog signal representing information reproduced from an information recording medium, and rectifying a waveform of the digital signal; a maximum likelihood decoding section for performing maximum likelihood decoding of the digital signal having the waveform thereof rectified, and generating a binary signal representing a result of the maximum likelihood decoding; a reliability calculation section for calculating a reliability of the result of the maximum likelihood decoding based on the digital signal having the waveform thereof rectified and the binary signal; and an adjusting section for adjusting a shape of a recording signal for recording the information on the information recording medium based on the calculated reliability.

44. 发明授权

US06807134B2 Asymmetry detection apparatus, jitter detection apparatus, and recording/reproduction apparatus 有权
标题翻译：不对称检测装置，抖动检测装置和记录/再现装置
公开(公告)号：US06807134B2
公开(公告)日：2004-10-19
申请号：US09749079
申请日：2000-12-27
申请人： Takeshi Nakajima , Shinichi Konishi , Harumitsu Miyashita , Toshihiko Takahashi
发明人： Takeshi Nakajima , Shinichi Konishi , Harumitsu Miyashita , Toshihiko Takahashi
IPC分类号： G11B509
CPC分类号： G11B7/126 , G11B7/005 , G11B20/10 , G11B20/1403 , G11B20/24
摘要： An asymmetry detection apparatus includes: a clock signal generator for generating a clock signal based on a reproduced signal; an A/D converter for sampling the reproduced signal in synchronization with the clock signal; a determiner for determining whether a level of each of a plurality of sampled data obtained by the sampling operation is equal to or greater than a predetermined level; and a detector for detecting asymmetry in the reproduced signal by using predetermined ones of the sampled data based on an output from the determiner. A jitter detection apparatus includes: a clock signal generator for generating a clock signal based on a reproduced signal; an A/D converter for sampling the reproduced signal in synchronization with the clock signal; a determiner for determining whether a level of each of a plurality of sampled data obtained by the sampling operation is equal to or greater than a predetermined level; and a detector for detecting jitter in the reproduced signal by using predetermined ones of the plurality of sampled data based on an output from the determiner.
摘要翻译：不对称检测装置包括：时钟信号发生器，用于基于再现信号产生时钟信号; A / D转换器，用于与时钟信号同步地对再现信号进行采样; 确定器，用于确定通过采样操作获得的多个采样数据中的每一个的电平是否等于或大于预定电平; 以及检测器，用于基于来自确定器的输出，通过使用预定的采样数据来检测再现信号中的不对称性。抖动检测装置包括：时钟信号发生器，用于基于再现信号产生时钟信号; A / D转换器，用于与时钟信号同步地对再现信号进行采样; 确定器，用于确定通过采样操作获得的多个采样数据中的每一个的电平是否等于或大于预定电平; 以及检测器，用于基于来自所述确定器的输出，通过使用所述多个采样数据中的预定数量来检测再现信号中的抖动。

45. 发明授权

US08848500B2 Optical read/write apparatus 有权
标题翻译：光读/写设备
公开(公告)号：US08848500B2
公开(公告)日：2014-09-30
申请号：US13981150
申请日：2012-07-20
申请人： Emi Kitano , Harumitsu Miyashita , Ryoji Hirose
发明人： Emi Kitano , Harumitsu Miyashita , Ryoji Hirose
IPC分类号： G11B20/18 , G11B7/12 , G11B7/004 , G11B7/085
CPC分类号： G11B20/1879 , G11B7/004 , G11B7/00458 , G11B7/085 , G11B7/12 , G11B7/14
摘要： This optical read/write apparatus has first and second optical heads 2a, 2b and includes location control sections 4a, 4b which make the relative arrangement of the first and second optical heads 2a, 2b variable according to either the environmental temperature or from one medium to another. The first optical head 2a performs a write operation to record a mark on an optical storage medium 1, and the second optical head 2b reads the information that has been written by scanning the recorded mark. The apparatus further includes a nonvolatile memory which saves the relative arrangement of the first and second optical heads 2a and 2b either on an environmental temperature basis or on a medium by medium basis.
摘要翻译：这种光学读/写装置具有第一和第二光头2a，2b，并且包括使第一和第二光头2a，2b相对布置的位置控制部分4a，4b根据环境温度或从一个介质到另一个。第一光学头2a执行写入操作以在光学存储介质1上记录标记，并且第二光学头2b读取通过扫描记录标记而写入的信息。该装置还包括非易失性存储器，其在第一和第二光学头2a和2b的相对布置方面基于环境温度或基于介质的介质。

46. 发明授权

US08817583B2 Optical read/write apparatus 有权
标题翻译：光读/写设备
公开(公告)号：US08817583B2
公开(公告)日：2014-08-26
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： G11B27/36 , 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。

47. 发明授权

US08270542B2 Method for evaluating quality of read signal and apparatus for reading information 有权
标题翻译：用于评估读取信号的质量的方法和用于读取信息的装置
公开(公告)号：US08270542B2
公开(公告)日：2012-09-18
申请号：US12510419
申请日：2009-07-28
申请人： Takeshi Nakajima , Harumitsu Miyashita , Hiromichi Ishibashi , Shigeru Furumiya
发明人： Takeshi Nakajima , Harumitsu Miyashita , Hiromichi Ishibashi , Shigeru Furumiya
IPC分类号： H04L27/06
CPC分类号： G11B20/1816
摘要： A most probable path is selected from a number n (where n≧2) of paths of state transitions occurring from a first state Sk−j (where k≧3 and j≧2) at a time k−j into a second state Sk at a time k. The method includes the steps of detecting predetermined combinations of the first and second states Sk−j and Sk defining the n probable paths in a predetermined period j between the times k−j and k, and evaluating the reliability of a read signal, decoded in the period j, by |Pa−Pb|. Pa and Pb indicate the probabilities of state transition of first and second state transition paths in the period j. The first and second state transition paths are estimated to be the most probable and the second most probable, respectively, among the n probable paths defined by the combinations detected.
摘要翻译：从时刻k-j的第一状态Sk-j（其中k≥3和j≥2）发生的状态转换路径的数n（其中n≥2）中选择最可能的路径到第二状态Sk 在一个时间k。该方法包括以下步骤：检测在时间k-j和k之间的预定周期j中定义n个可能路径的第一和第二状态Sk-j和Sk的预定组合，并且评估读取信号的可靠性，周期j，由| Pa-Pb |。 Pa和Pb表示周期j中第一和第二状态转换路径的状态转移的概率。估计第一和第二状态转换路径是由检测到的组合定义的n个可能路径中最可能和最可能的最可能的。

48. 发明授权

US08248902B2 Reproduction signal evaluation method, reproduction signal evaluation unit, and optical disk device adopting the same 有权
标题翻译：再现信号评估方法，再现信号评估单元和采用该方法的光盘装置
公开(公告)号：US08248902B2
公开(公告)日：2012-08-21
申请号：US12698284
申请日：2010-02-02
申请人： Harumitsu Miyashita , Yasumori Hino , Junya Shiraishi , Shoei Kobayashi
发明人： Harumitsu Miyashita , Yasumori Hino , Junya Shiraishi , Shoei Kobayashi
IPC分类号： G11B7/00
CPC分类号： G11B20/10009 , G11B20/1012 , G11B20/10481 , G11B20/1816 , G11B2220/2537
摘要： A reproduction signal evaluation unit includes a pattern detection section for extracting, from a binary signal, a specific state transition pattern which has a possibility of causing a bit error; a differential metric computing section for computing a differential metric based on the binary signal of the extracted state transition pattern; an error computing section for computing an error rate predicted based on an integration value that is integrated by an integration section, a count value that is counted by a pattern count section, an integration value that is integrated by another integration section, and a count value that is counted by another pattern count section, and a standard deviation computing section for computing a standard deviation based on the computed error rate.
摘要翻译：再现信号评估单元包括：模式检测部分，用于从二进制信号中提取具有引起位错误的可能性的特定状态转换模式; 差分度量计算部分，用于基于所提取的状态转变模式的二进制信号来计算差分度量; 用于计算基于由积分部分积分的积分值，由图案计数部分计数的计数值，由另一积分部分积分的积分值和计数值的误差率的误差计算部分其由另一模式计数部分计数，以及标准偏差计算部分，用于基于计算出的错误率来计算标准偏差。

49. 发明申请

US20110032809A1 INFORMATION RECORDING MEDIUM EVALUATION METHOD, INFORMATION RECORDING MEDIUM, METHOD FOR MANUFACTURING INFORMATION RECORDING MEDIUM, SIGNAL PROCESSING METHOD AND ACCESS CONTROL APPARATUS 审中-公开
标题翻译：信息记录介质评估方法，信息记录介质，制造信息记录介质的方法，信号处理方法和访问控制装置
公开(公告)号：US20110032809A1
公开(公告)日：2011-02-10
申请号：US12910091
申请日：2010-10-22
申请人： Harumitsu Miyashita , Kohei Nakata
发明人： Harumitsu Miyashita , Kohei Nakata
IPC分类号： G11B27/36
CPC分类号： G11B7/013 , G11B20/10009 , G11B20/10046 , G11B20/10055 , G11B20/1012 , G11B20/10296 , G11B20/10481 , G11B2220/216 , G11B2220/2541
摘要： A method for rating an information recording medium according to the present invention includes the steps of: receiving a digital read signal, which has been generated based on an analog read signal representing information that has been read from the information recording medium, and shaping the waveform of the digital read signal; subjecting the shaped digital read signal to maximum likelihood decoding, thereby generating a binarized signal showing a result of the maximum likelihood decoding; and calculating the quality of the digital read signal based on the shaped digital read signal and the binarized signal. If the quality of the read signal is calculated by a PRML method in which a number of zero-cross portions are included in a merging path of a minimum difference metric, the quality is calculated by using only a state transition pattern in which only one zero-cross portion is included in a merging path of a non-minimum difference metric.
摘要翻译：根据本发明的用于对信息记录介质进行评级的方法包括以下步骤：接收基于表示从信息记录介质读取的信息的模拟读取信号产生的数字读取信号，并且对波形进行整形的数字读取信号; 对成形数字读取信号进行最大似然解码，从而生成表示最大似然解码结果的二值化信号; 并根据成形数字读取信号和二值化信号计算数字读取信号的质量。如果通过PRML方法计算读取信号的质量，其中在最小差值度量的合并路径中包括多个零交叉部分，则仅通过仅使用仅一个零的状态转换模式来计算质量 - 交叉部分被包括在非最小差值度量的合并路径中。

50. 发明授权

US07848198B2 Information processing device, access device, recording medium, information processing method, and information processing program 有权
标题翻译：信息处理装置，存取装置，记录介质，信息处理方法和信息处理程序
公开(公告)号：US07848198B2
公开(公告)日：2010-12-07
申请号：US11666884
申请日：2005-10-14
申请人： Harumitsu Miyashita , Junichi Minamino , Takeshi Nakajima
发明人： Harumitsu Miyashita , Junichi Minamino , Takeshi Nakajima
IPC分类号： G11B7/00
CPC分类号： G11B7/00736 , G11B7/004 , G11B7/005 , G11B7/0053 , G11B19/12
摘要： An information processing device for processing specific information recorded to a recording medium that has a characteristic identification unit and a processing unit. The characteristic identification unit identifies the reflection characteristic of the recording medium. The processing unit processes the specific information recorded to the recording medium according to the identified reflection characteristic. The reflection characteristic is either a first characteristic such that the reflectance of light reflected by a recorded region of the recording medium (referred to as first reflectance) is greater than the reflectance of light reflected by an unrecorded region of the recording medium (referred to as second reflectance), or a second characteristic such that the first reflectance is less than the second reflectance.
摘要翻译：一种用于处理记录在具有特征识别单元和处理单元的记录介质上的特定信息的信息处理设备。特征识别单元识别记录介质的反射特性。处理单元根据所识别的反射特性来处理记录在记录介质上的特定信息。反射特性是由记录介质的记录区域反射的光的反射率（被称为第一反射率）大于由记录介质的未记录区域反射的光的反射率的第一特性（称为第一反射率第二反射率）或第二特性使得第一反射率小于第二反射率。

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