公开(公告)号：EP2058805A4

公开(公告)日：2011-03-09

申请号：EP07859699

申请日：2007-11-30

Applicant: PANASONIC CORP

Inventor： HINO YASUMORI ,  MIYASHITA HARUMITSU ,  SHOJI MAMORU ,  ITOU KIYOTAKA

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

CPC classification number: G11B20/10009 ,  G11B20/10046 ,  G11B20/10111 ,  G11B20/10481 ,  G11B2020/122 ,  G11B2220/2541 ,  G11B2220/2562

公开(公告)号：EP1710790A4

公开(公告)日：2009-05-06

申请号：EP05709414

申请日：2005-01-27

Applicant: PANASONIC CORP

Inventor： SHOJI MAMORU ,  HINO YASUMORI ,  SATO TAKAHIRO ,  OKADA YUU

IPC: G11B7/0045 ,  G11B7/006 ,  G11B7/125

CPC classification number: G11B7/1267 ,  G11B7/00456 ,  G11B7/0062

Abstract: A recording power determination method for determining a recording power of an optical beam for recording data on an information storage medium includes the steps of recording test data on the information storage medium at a plurality of test recording powers; reading the test data recorded at each test recording power, generating a signal, and measuring a modulation factor of the signal corresponding to each test recording power; calculating a product of an n'th power of each test recording power and the corresponding modulation factor, thereby obtaining a plurality of products corresponding to the plurality of test recording powers, where n is a value of exponent and is a real number other than 1; calculating a first recording power based on the correlation between the plurality of test recording powers and the plurality of products; and calculating the recording power based on the first recording power.

公开(公告)号：EP1909280A4

公开(公告)日：2009-04-15

申请号：EP06781201

申请日：2006-07-18

Applicant: PANASONIC CORP

Inventor： SHOJI MAMORU ,  HINO YASUMORI ,  MIYASHITA HARUMITSU ,  KOBAYASHI ISAO

IPC: G11B20/18 ,  G11B7/0045 ,  G11B7/007 ,  G11B7/125 ,  G11B20/10

CPC classification number: G11B7/1267 ,  G11B7/00456 ,  G11B7/0062

Abstract: An operation of a reliability value of |Pa-Pb|-Pstd of maximum-likelihood decoding results of a portion, which is equivalent to a start/end edge of a recording mark edge and has a high error generating probability in the maximum-likelihood decoding method, is performed for each combination of a prescribed mark length and a length of a space just before the mark, and for each combination of the mark length and a space just after the mark. Based on the operation results, a recording parameter is optimized, and recording is performed by having the optimized recording parameter reflected.

公开(公告)号：JP2013218782A

公开(公告)日：2013-10-24

申请号：JP2013158521

申请日：2013-07-31

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

Inventor： NAKAMURA ATSUSHI ,  MIYAGAWA NAOYASU ,  FURUMIYA SHIGERU ,  HINO YASUMORI ,  ITO MOTOSHI ,  SHOJI MAMORU ,  TAKAHASHI NOBUHISA

IPC: G11B7/007 ,  G11B7/0045 ,  G11B7/125 ,  G11B7/24 ,  G11B7/24038 ,  G11B7/24082

CPC classification number: G11B7/00736 ,  G11B7/0045 ,  G11B7/1267 ,  G11B7/24038 ,  G11B7/24082

Abstract: PROBLEM TO BE SOLVED: To minimize influence of a test record in an OPC area of one information recording layer on OPC areas of the other information recording layers.SOLUTION: An information recording medium is provided with a plurality of information recording layers having three layers or more. Each of the plurality of information recording layers is provided with a test record area used for adjusting recording conditions. One information recording layer out of the plurality of information recording layers is provided with a reproduction-exclusive management data area in which management data for managing the information recording medium is recorded beforehand. Each of other two or more information recording layers out of the plurality of information recording layers has the test record area where a part of the management data area and a radial position overlap with each other.

Abstract translation: 要解决的问题：最小化其他信息记录层的OPC区域上的一个信息记录层的OPC区域中的测试记录的影响。解决方案：信息记录介质设置有多个信息记录层，其具有三层或 更多。 多个信息记录层中的每一个设置有用于调整记录条件的测试记录区域。 多个信息记录层中的一个信息记录层设置有再现专用管理数据区，其中预先记录了用于管理信息记录介质的管理数据。 多个信息记录层中的其他两个以上的信息记录层中的每一个具有其中管理数据区的一部分和径向位置彼此重叠的测试记录区。

公开(公告)号：JP2011123997A

公开(公告)日：2011-06-23

申请号：JP2011032354

申请日：2011-02-17

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

Inventor： SHOJI MAMORU ,  HINO YASUMORI ,  SATO TAKAHIRO ,  OKADA TAKESHI

IPC: G11B7/0045 ,  G11B7/006 ,  G11B7/125

CPC classification number: G11B7/1267 ,  G11B7/00456 ,  G11B7/0062

Abstract: PROBLEM TO BE SOLVED: To determine recording power of a light beam when data are recorded in an information recording medium. SOLUTION: A recording power determination method includes steps of: recording test data at a plurality of test recording powers, measuring a modulation factor of the signal corresponding to each test recording power, calculating a product of an n'th power (exponent n is 2) of each test recording power and the corresponding modulation factor, calculating a first recording power based on correlation of the test recording power and the product and calculating recording powers based on the first recording power. A value of ρ and a value of κ are recorded in the information recording medium and are read out, an approximation linear line showing correlation of the plurality of test recording powers and the plurality of products is formed, the first recording power wherein the product is made 0 in the approximation linear line is calculated and the first recording power, and the product of (-1/(the value of κ)+2) and (the value of ρ) are calculated. COPYRIGHT: (C)2011,JPO&INPIT

Abstract translation: 要解决的问题：当数据被记录在信息记录介质中时，确定光束的记录功率。 解决方案：记录功率确定方法包括以下步骤：在多个测试记录功率下记录测试数据，测量对应于每个测试记录功率的信号的调制因子，计算第n个功率（指数 n是每个测试记录功率的2）和相应的调制因子，基于测试记录功率和产品的相关性计算第一记录功率，并基于第一记录功率计算记录功率。 在信息记录介质中记录ρ和值的值，并读出，形成表示多个测试记录功率与多个产品的相关关系的近似线性线，其中产品为 计算近似线性线中的0，并计算第一记录功率，并计算（-1 /（κ值）+ 2）和（ρ值）的乘积。 版权所有（C）2011，JPO＆INPIT

公开(公告)号：JP2010118114A

公开(公告)日：2010-05-27

申请号：JP2008290535

申请日：2008-11-13

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

Inventor： TSUKUDA MASAHIKO ,  HINO YASUMORI ,  KANEUMA YOSHIAKI ,  ONO EIJI

IPC: G11B7/24

Abstract: PROBLEM TO BE SOLVED: To provide an optical information recording medium having a thickness that solves the problem due to thickness variation from a protective layer to each of information layers in a multilayer optical information recording medium, which considers process margin in manufacturing the optical information recording medium and attains recording and reproducing characteristics of the drive. SOLUTION: The range of the thickness variation from the protective layer surface to the respective information layers in the multilayer optical information recording medium is set equal to or less than a predetermined error of thickness with respect to thickness reference lines having thickness set for each of a plurality of ranges divided in the radial direction, thereby substantially suppressing an influence of the thickness variation and achieving excellent recording and reproducing characteristics. COPYRIGHT: (C)2010,JPO&INPIT

Abstract translation: 要解决的问题：提供一种光学信息记录介质，其具有在多层光学信息记录介质中解决由保护层到信息层中的每一个的厚度变化的问题的厚度，其考虑制造过程中的处理余量 光信息记录介质，并获得驱动器的记录和再现特性。 解决方案：将多层光学信息记录介质中的从保护层表面到各个信息层的厚度变化的范围设定为相对于厚度设定为厚度的厚度基准线的预定的厚度误差等于或小于 在径向上分割的多个范围中的每一个，从而基本上抑制厚度变化的影响并实现优异的记录和再现特性。 版权所有（C）2010，JPO＆INPIT

公开(公告)号：JP2009272032A

公开(公告)日：2009-11-19

申请号：JP2009152066

申请日：2009-06-26

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

Inventor： SHOJI MAMORU ,  HINO YASUMORI ,  SATO TAKAHIRO ,  OKADA TAKESHI

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

CPC classification number: G11B7/1267 ,  G11B7/00456 ,  G11B7/0062

Abstract: PROBLEM TO BE SOLVED: To decide recording power of an optical beam when data is recorded in an information recording medium. SOLUTION: The recording power decision method includes: a step of recording test data with a plurality of test recording powers, a step of measuring modulation degree corresponding to respective test recording powers, a step of calculating a product of n-th power (n is 2) of each test recording power and corresponding modulation degree, a step of calculating first recording power based on correlation between the test recording power and the products, and a step of calculating recording power based on the first recording power. A value of ρ and a value of κ are recorded in the information recording medium, a value of ρ and a value of κ are read out, an approximation line indicating correlation between a plurality of test recording powers and a plurality of products is created, the first recording power in which the product becomes 0 in the approximation line is calculated, then product of the first recording power and (-1/(value of κ)+2) and (value of ρ) is calculated. COPYRIGHT: (C)2010,JPO&INPIT

Abstract translation: 要解决的问题：当数据记录在信息记录介质中时，决定光束的记录功率。 解决方案：记录功率决定方法包括：记录具有多个测试记录功率的测试数据的步骤，测量与各测试记录功率相对应的调制度的步骤，计算第n次功率乘积的步骤 （n是2）和相应的调制度，基于测试记录功率和产品之间的相关性来计算第一记录功率的步骤，以及基于第一记录功率计算记录功率的步骤。 在信息记录介质中记录ρ的值和κ的值，读出ρ的值和κ的值，形成指示多个测试记录功率与多个产品之间的相关性的近似线， 计算在近似线中产品变为0的第一记录功率，然后计算第一记录功率与（-1 /（κ值）+2）和（ρ值）的乘积。 版权所有（C）2010，JPO＆INPIT

公开(公告)号：JP2011119024A

公开(公告)日：2011-06-16

申请号：JP2011059788

申请日：2011-03-17

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

Inventor： SANO AKIMASA ,  KANEUMA YOSHIAKI ,  HINO YASUMORI

IPC: G11B7/26

CPC classification number: G11B7/268 ,  G11B7/00375 ,  G11B2007/0013

Abstract: PROBLEM TO BE SOLVED: To provide an optical information medium measurement method that achieves accurate comparison of modulation degree or reflectance difference even when any measuring optical system measures an optical information medium without preparing a special measuring optical system. SOLUTION: The optical information medium measurement method is used for measuring a degree of modulation in the optical information medium with a multilayered structure having multiple information layers. The optical information medium measurement method includes: a first step of measuring the modulation degree of each layer of the optical information medium by using the measurement optical system; a second step of obtaining a thickness between layers of the optical information medium; a third step of obtaining a reflectance of each layer of the optical information medium; and a fourth step of converting the modulation degree of each layer, the modulation degree being measured in the first step, into a modulation degree at a reference optical system different from the measurement optical system. COPYRIGHT: (C)2011,JPO&INPIT

Abstract translation: 要解决的问题：提供一种光信息介质测量方法，即使在任何测量光学系统测量光学信息介质而不准备专门的测量光学系统时，也可以精确地比较调制度或反射率差异。 光信息介质测量方法用于测量具有多个信息层的多层结构的光信息介质中的调制度。 光信息介质测量方法包括：通过使用测量光学系统测量光信息介质的每一层的调制度的第一步骤; 获得所述光信息介质的层之间的厚度的第二步骤; 获得光信息介质的每一层的反射率的第三步骤; 以及将在第一步骤中测量的每层的调制度转换成与测量光学系统不同的参考光学系统的调制度的第四步骤。 版权所有（C）2011，JPO＆INPIT

公开(公告)号：JP2011044230A

公开(公告)日：2011-03-03

申请号：JP2010241713

申请日：2010-10-28

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

Inventor： KANEUMA YOSHIAKI ,  ANZAI JOJI ,  TSUKUDA MASAHIKO ,  HINO YASUMORI

IPC: G11B7/24 ,  G11B7/085 ,  G11B7/135

CPC classification number: G11B7/24038 ,  G11B7/005 ,  G11B7/09 ,  G11B7/13925 ,  G11B2007/0013

Abstract: PROBLEM TO BE SOLVED: To provide an optical recording medium and an optical information device which improve the quality of a servo signal and a reproducing signal. SOLUTION: When geometrical thicknesses tr1, tr2, tr3, tr4 of a cover layer 42, a first intermediate layer 43, a second intermediate layer 44, and a third intermediate layer 45 are converted into thicknesses of the respective layers t1, t2, t3, t4 respectively when a predetermined refractive index "no" is present, a defocus amount generated in the layer having a refractive index nrα and a thickness trα (1≤α≤n (α is a natural number and n is an integer not smaller than 4)) is equal to a defocus amount generated in the layer having a refractive index "no" and a thickness tα (1≤α≤n (α is a natural number and n is an integer not smaller than 4)). Moreover, the thicknesses t1, t2, t3, t4 satisfy the following relationships: ¾t1-(t2+t3+t4)¾≥1 μm, difference between arbitrary two values of the thicknesses t1, t2, t3, t4 is larger than or equal to 1 μm, and ¾(t1+t2)-(t3+t4)¾≥1 μm. COPYRIGHT: (C)2011,JPO&INPIT

Abstract translation: 要解决的问题：提供一种提高伺服信号和再现信号的质量的光学记录介质和光学信息装置。 解决方案：当覆盖层42，第一中间层43，第二中间层44和第三中间层45的几何厚度tr1，tr2，tr3，tr4被转换成各层的厚度t1，t2 ，t3，t4时，在折射率nrα和厚度trα（1≤α≤n（α为自然数，n为不整数）的层中产生的散焦量， 小于4））等于在折射率“no”和厚度tα（1≤α≤n（α是自然数，n是不小于4的整数））的层中产生的散焦量。 此外，厚度t1，t2，t3，t4满足以下关系：¾t1（t2 + t3 + t4）¾≥1μm，厚度t1，t2，t3，t4的任意两个值之间的差大于或等于 （t1 + t2） - （t3 + t4）¾≥1μm。 版权所有（C）2011，JPO＆INPIT

公开(公告)号：JP2013191247A

公开(公告)日：2013-09-26

申请号：JP2010156880

申请日：2010-07-09

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

Inventor： NAKADA HIDEKI ,  WADA HIDEHIKO ,  HINO YASUMORI

IPC: G11B7/13 ,  H01L31/10

CPC classification number: G11B7/13 ,  G11B7/131 ,  G11B7/1381

Abstract: PROBLEM TO BE SOLVED: To solve the problems that the conventional photodetector cannot correspond to a slim size because of a configuration having a resin package and wire bonding to increase the size of the photodetector, that an S/N of a reproduction signal is bad because a luminous flux of 405 nm cannot secure transmittance corresponding to a multilayer optical disk of low reflectivity due to four layers of a multilayer antireflection layer on a light reception part, and further that specifications of a light reception part of a BD and a multilayer antireflection layer on a light reception part of a DVD and a CD have to be changed to correspond to a three-wavelength light source.SOLUTION: A photodetector 120 which can eliminate reflection loss and obtain a reproduction signal excellent in an S/N is achieved by adjusting a refraction index of a glass package 125 of the photodetector 120 to a reflection index of an adhesion layer 124 (silicone resin) to make a multilayer antireflection layer 128 three layers, reducing the number of layers of the multilayer antireflection layer 128.

Abstract translation: 要解决的问题为了解决由于具有树脂封装和引线接合的结构而使传统的光电检测器不能对应于细长尺寸的问题，以增加光电检测器的尺寸，因此再现信号的S / N是坏的，因为 405nm的光通量不能确保由于在光接收部分上的多层反射层的四层而导致的低反射率的多层光盘的透射率，此外，BD的光接收部分和多层抗反射层的规格 必须对DVD和CD的光接收部分进行改变以对应于三波长光源。解决方案：可以消除反射损耗并获得S / N优良的再现信号的光电检测器120通过调节 光电检测器120的玻璃封装125的折射率相对于粘合层124（硅树脂）的反射指数，以形成多层抗反射 n层128三层，减少多层抗反射层128的层数。