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    1.
    发明专利
    未知

    公开(公告)号：DE602004023579D1

    公开(公告)日：2009-11-26

    申请号：DE602004023579

    申请日：2004-11-08

    Applicant: PANASONIC CORP

    Inventor： MIYASHITA HARUMITSU ,  NAKAJIMA TAKESHI ,  SHOJI MAMORU ,  HINO YASUMORI

    IPC: G11B7/004 ,  G11B7/0045 ,  G11B7/005 ,  G11B7/006 ,  G11B7/007 ,  G11B7/125

    Abstract: 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. Further a recording/reproducing method using the recording/reproducing apparatus is dislosed.

    3.
    发明专利
    未知

    公开(公告)号：DE60137155D1

    公开(公告)日：2009-02-05

    申请号：DE60137155

    申请日：2001-12-26

    Applicant: PANASONIC CORP

    Inventor： GUSHIMA TOYOJI ,  FURUMIYA SHIGERU ,  ISHIDA TAKASHI ,  ISHIBASHI HIROMICHI ,  DEGUCHI HIRONORI ,  NAKAMURA ATSUSHI ,  MINAMINO JUNICHI ,  USUI MAKOTO ,  NAKAJIMA TAKESHI

    IPC: G11B7/0045 ,  G11B7/00 ,  G11B7/007 ,  G11B20/10 ,  G11B20/12 ,  G11B20/14 ,  G11B20/18 ,  G11B27/30

    Abstract: A recording medium comprising a recording area, wherein: the recording area includes a first area, the first area includes a fourth area including N number of frame areas, N being equal to or greater than 2, each of the N number of frame areas includes an area in which a synchronization code sequence (SY) and at least a portion of data (DATA) are to be recorded, wherein the synchronization code sequence (VF0) which is to be recorded in the frame area located at the start of the fourth area is different by a code distance equal to or greater than 2 in NRZI representation from any synchronization code sequence (SY) which is to be recorded in any of the frame areas of the fourth area other than the frame area (F0) located at the start of the fourth area, and the synchronization code sequence (SY) which is to be recorded in the frame area located at the start of the fourth area includes a pattern which does not occur in the portion of data (DATA).

    Prml detector
    4.
    发明专利
    Prml detector 有权
    PRML检测器

    公开(公告)号：JP2010176834A

    公开(公告)日：2010-08-12

    申请号：JP2010028348

    申请日：2010-02-12

    Applicant: Panasonic Corp ,  パナソニック株式会社

    Inventor： MIYASHITA SEIJUN ,  NAKAJIMA TAKESHI ,  MINAMINO JUNICHI ,  NAKAMURA ATSUSHI ,  KONISHI SHINICHI

    IPC: G11B20/10 ,  G11B7/00 ,  G11B7/005 ,  G11B20/14 ,  G11B20/18

    CPC classification number: G11B20/10009 ,  G11B7/005 ,  G11B20/10046 ,  G11B20/10055 ,  G11B20/10166 ,  G11B20/10296 ,  G11B2020/1484

    Abstract: PROBLEM TO BE SOLVED: To find an accurate equalizing error and accurately output a temporary decision value, when the coefficient of a FIR filter is adaptively controlled, even with an asymmetric reproduction waveform or under a noisy environment. SOLUTION: A PRML detector includes a waveform equalizer for equalizing the waveform of a reproduction signal from a recording medium, and a decoder for generating binary-coded data, on the basis of the equalized waveform. The decoder outputs a temporary data string that is data before or after the binary-coded data is obtained; the waveform equalizer includes a delay element for delaying the reproduction signal; a plurality of multipliers for multiplying predetermined coefficients by each of the reproduction signal and the delayed reproduction signal; an adder for adding the outputs from the plurality of multipliers; a target value determination unit for determining an equalization target value, on the basis of the temporary data string; and a coefficient adaptive controller for calculating the predetermined coefficients on the basis of an output from the adder of the equalizer and the target value determined by the target value determining unit, and adaptively updating the coefficient for each of the plurality of multipliers. COPYRIGHT: (C)2010,JPO&INPIT

    Abstract translation: 要解决的问题：为了找到精确的均衡误差并准确地输出临时判定值，当FIR滤波器的系数被自适应地控制时，即使具有不对称再现波形或在嘈杂的环境下。 解决方案：PRML检测器包括用于均衡来自记录介质的再现信号的波形的波形均衡器和用于产生二进制编码数据的解码器，其基于均衡波形。 解码器输出作为获得二进制编码数据之前或之后的数据的临时数据串; 波形均衡器包括用于延迟再现信号的延迟元件; 多个乘法器，用于通过再现信号和延迟再现信号中的每一个来乘以预定系数; 加法器，用于将来自所述多个乘法器的输出相加; 目标值确定单元，用于基于临时数据串确定均衡目标值; 以及系数自适应控制器，用于基于来自均衡器的加法器的输出和由目标值确定单元确定的目标值来计算预定系数，并且自适应地更新多个乘法器中的每一个的系数。 版权所有（C）2010，JPO＆INPIT

    Recording control apparatus, recording and reproduction apparatus, and recording control method
    5.
    发明专利
    Recording control apparatus, recording and reproduction apparatus, and recording control method 有权
    记录控制装置，记录和再现装置以及记录控制方法

    公开(公告)号：JP2010272206A

    公开(公告)日：2010-12-02

    申请号：JP2010178161

    申请日：2010-08-06

    Applicant: Panasonic Corp ,  パナソニック株式会社

    Inventor： MIYASHITA SEIJUN ,  NAKAJIMA TAKESHI ,  KIMURA NAOHIRO

    IPC: G11B20/18 ,  G11B7/0045 ,  G11B7/125 ,  G11B20/10 ,  G11B20/14

    CPC classification number: G11B7/0062 ,  G11B7/00456 ,  G11B20/10009 ,  G11B20/10055 ,  G11B20/10111 ,  G11B20/10481 ,  G11B20/1403

    Abstract: PROBLEM TO BE SOLVED: To set a recording parameter optimal for the maximum likelihood decoding method. SOLUTION: The reliability ¾Pa-Pb¾-Pstd of the result of maximum likelihood decoding is calculated for portions of a signal which correspond to a mark start edge and a mark termination edge of a recording mark and have a high error probability by the maximum likelihood decoding method. The calculation is performed for each combination of a predetermined mark length and a previous space length and combinations of a mark length and a following space length. Based on the result, a recording parameter for optimizing the position of the edge shift is determined. Information is recorded on the basis of the recording parameter determined. COPYRIGHT: (C)2011,JPO&INPIT

    Abstract translation: 要解决的问题：为最大似然解码方法设定最佳的记录参数。 解决方案：针对对应于记录标记的标记开始边缘和标记终止边缘的信号的部分计算最大似然解码结果的可靠性¾Pa-Pb¾-Pstd，并且具有高误差概率 最大似然解码方法。 对于预定标记长度和先前空格长度以及标记长度和随后的空格长度的组合的每个组合执行计算。 基于该结果，确定用于优化边缘位移的记录参数。 基于确定的记录参数来记录信息。 版权所有（C）2011，JPO＆INPIT

    Method for correcting recording condition and optical disk unit
    6.
    发明专利
    Method for correcting recording condition and optical disk unit 审中-公开
    校正记录条件和光盘单元的方法

    公开(公告)号：JP2009070434A

    公开(公告)日：2009-04-02

    申请号：JP2007234882

    申请日：2007-09-11

    Applicant: Panasonic Corp ,  パナソニック株式会社

    Inventor： NAKAJIMA TAKESHI

    IPC: G11B7/0045 ,  G11B7/125

    Abstract: PROBLEM TO BE SOLVED: To provide an optical disk unit which can correct recording parameters while recording user data when a temperature, disk characteristic, and a linear speed change and which does not lower a recording rate substantially. SOLUTION: A method for correcting the recording parameters for recording on an optical disk with a constant angular velocity stops recording temporarily when the linear speed changes by a preset value while recording, and measures asymmetry of a reproducing signal of a recording area right before stopping to update setting of a recording power based on the result of the asymmetry measurement. COPYRIGHT: (C)2009,JPO&INPIT

    Abstract translation: 要解决的问题：提供一种光盘单元，其可以在温度，盘特性和线速度改变时记录用户数据时校正记录参数，并且基本上不降低记录速率。 解决方案：一种用于校正用于以恒定角速度记录在光盘上的记录参数的方法当记录时线速度改变预设值时暂时停止记录，并且测量记录区域正确的再现信号的不对称性 在停止之前，基于不对称测量的结果来更新记录功率的设置。 版权所有（C）2009，JPO＆INPIT

    Recording control apparatus, recording and reproducing apparatus, and recording control method
    7.
    发明专利
    Recording control apparatus, recording and reproducing apparatus, and recording control method 有权
    记录控制装置，记录和再现装置以及记录控制方法

    公开(公告)号：JP2008293651A

    公开(公告)日：2008-12-04

    申请号：JP2008204692

    申请日：2008-08-07

    Applicant: Panasonic Corp ,  パナソニック株式会社

    Inventor： MIYASHITA SEIJUN ,  NAKAJIMA TAKESHI ,  KIMURA NAOHIRO

    IPC: G11B7/0045 ,  G11B7/125 ,  G11B20/10 ,  G11B20/14 ,  G11B20/18

    CPC classification number: G11B7/0062 ,  G11B7/00456 ,  G11B20/10009 ,  G11B20/10055 ,  G11B20/10111 ,  G11B20/10481 ,  G11B20/1403

    Abstract: PROBLEM TO BE SOLVED: To set a recording parameter optimal for a maximum likelihood decoding method. SOLUTION: Calculation of a reliability value ¾Pa-Pb¾-Pstd of the maximum likelihood decoding result of a part equivalent to the head/tail end part of the edge of a recording mark and having a high error occurrence probability is executed for each combination of a predetermined mark length and a space length immediately before and each combination of a mark length and a space length immediately after. A recording parameter for optimizing an edge shift position is obtained from its calculation result, and recording reflecting the obtained recording parameter is executed. COPYRIGHT: (C)2009,JPO&INPIT

    Abstract translation: 要解决的问题：为最大似然解码方法设定最佳的记录参数。 解决方案：对于每个记录标记的边缘的头/尾端部分的等效的部分的最大似然解码结果的可靠性值¾Pa-Pb¾-Pstd进行计算，并且具有高错误发生概率 紧接在之前的预定标记长度和空格长度的组合以及紧接在之后的标记长度和间隔长度的每个组合。 从其计算结果获得用于优化边缘移位位置的记录参数，并且执行反映所获得的记录参数的记录。 版权所有（C）2009，JPO＆INPIT

    Information processing device, access device, recording medium, information processing method, and information processing program
    9.
    发明专利
    Information processing device, access device, recording medium, information processing method, and information processing program 有权
    信息处理设备，访问设备，记录介质，信息处理方法和信息处理程序

    公开(公告)号：JP2008305540A

    公开(公告)日：2008-12-18

    申请号：JP2008184118

    申请日：2008-07-15

    Applicant: Panasonic Corp ,  パナソニック株式会社

    Inventor： MIYASHITA SEIJUN ,  MINAMINO JUNICHI ,  NAKAJIMA TAKESHI

    IPC: G11B7/24

    CPC classification number: G11B7/00736 ,  G11B7/004 ,  G11B7/005 ,  G11B7/0053 ,  G11B19/12

    Abstract: PROBLEM TO BE SOLVED: To provide an information processing device with which information recorded to a recording medium can be properly processed regardless of the reflection characteristic of the recording medium. SOLUTION: The information processing device 225 is a device for processing specific information recorded to the recording medium 100, and has a characteristic identification unit 204 and a processing unit 226. The characteristic identification unit 204 identifies the reflection characteristic of the recording medium 100. The processing unit 226 processes the specific information recorded to the recording medium 100 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 100 (referred to as first reflectance) is greater than the reflectance of light reflected by an unrecorded region of the recording medium 100 (referred to as second reflectance), or a second characteristic such that the first reflectance is less than the second reflectance. COPYRIGHT: (C)2009,JPO&INPIT

    Abstract translation: 要解决的问题：提供一种信息处理装置，无论记录介质的反射特性如何，可以将记录在记录介质上的信息适当地处理。 解决方案：信息处理设备225是用于处理记录到记录介质100的特定信息的设备，并具有特征识别单元204和处理单元226.特征识别单元204识别记录介质的反射特性 处理单元226根据识别的反射特性处理记录到记录介质100的特定信息。 反射特性是使由记录介质100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100的未记录区域反射的光的反射率的第一特性（参考 或第二特性，使得第一反射率小于第二反射率。 版权所有（C）2009，JPO＆INPIT

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