公开(公告)号：US07743307B2

公开(公告)日：2010-06-22

申请号：US11455742

申请日：2006-06-20

申请人： Minoru Akiyama ,  Hideki Takahashi ,  Akihito Ogawa ,  Chosaku Noda

发明人： Minoru Akiyama ,  Hideki Takahashi ,  Akihito Ogawa ,  Chosaku Noda

IPC分类号： G06F11/30 ,  G06F11/00 ,  G11B20/10 ,  G11B20/18

CPC分类号： G11B20/1883 ,  G11B2020/1893 ,  G11B2220/20

摘要： In order to select the latest defect management information, the latest selection information first is selected by searching a plurality of selection information areas for a currently active selection information area in which the latest selection information is recorded and subsequently the latest defect management information is obtained by searching a plurality of defect management areas for a currently active defect management area in which the latest defect management information is recorded. If there is no unused defect management area in which defect management information can be alternatively recorded in lieu of the currently active defect management area, recording operation is limited.

摘要翻译： 为了选择最新的缺陷管理信息，首先通过搜索多个选择信息区域来选择最新的选择信息，以选择其中记录有最新选择信息的当前活动选择信息区域，然后通过以下步骤获得最新的缺陷管理信息： 搜索多个缺陷管理区域中记录有最新缺陷管理信息的当前活动缺陷管理区域。 如果不存在缺陷管理信息可替换地记录当前有效缺陷管理区域的未使用的缺陷管理区域，则记录操作受到限制。

公开(公告)号：US20060288257A1

公开(公告)日：2006-12-21

申请号：US11455742

申请日：2006-06-20

申请人： Minoru Akiyama ,  Hideki Takahashi ,  Akihito Ogawa ,  Chosaku Noda

发明人： Minoru Akiyama ,  Hideki Takahashi ,  Akihito Ogawa ,  Chosaku Noda

IPC分类号： G06F11/00

CPC分类号： G11B20/1883 ,  G11B2020/1893 ,  G11B2220/20

摘要： In order to select the latest defect management information, the latest selection information first is selected by searching a plurality of selection information areas for a currently active selection information area in which the latest selection information is recorded and subsequently the latest defect management information is obtained by searching a plurality of defect management areas for a currently active defect management area in which the latest defect management information is recorded, If there is no unused defect management area in which defect management information can be alternatively recorded in lieu of the currently active defect management area, recording operation is limited.

摘要翻译： 为了选择最新的缺陷管理信息，首先通过搜索多个选择信息区域来选择最新的选择信息，以选择其中记录有最新选择信息的当前活动选择信息区域，随后通过以下方式获得最新的缺陷管理信息： 搜索记录了最新缺陷管理信息的当前活动缺陷管理区域的多个缺陷管理区域，如果不存在备用记录缺陷管理信息的未使用的缺陷管理区域代替当前活动缺陷管理区域 ，记录操作有限。

公开(公告)号：US20080205212A1

公开(公告)日：2008-08-28

申请号：US12039648

申请日：2008-02-28

申请人： Takehiro Hiramatsu ,  Hideaki Ohsawa ,  Kazuo Watabe ,  Chosaku Noda ,  Naoki Morishita ,  Akihito Ogawa ,  Kazuto Kuroda ,  Nobuaki Kaji

发明人： Takehiro Hiramatsu ,  Hideaki Ohsawa ,  Kazuo Watabe ,  Chosaku Noda ,  Naoki Morishita ,  Akihito Ogawa ,  Kazuto Kuroda ,  Nobuaki Kaji

IPC分类号： G11B7/004

CPC分类号： G11B7/1359 ,  G11B7/0908 ,  G11B7/1275 ,  G11B7/131 ,  G11B7/1378 ,  G11B7/1381 ,  G11B7/13922 ,  G11B7/24

摘要： According to one embodiment, an optical head device provides a signal processing circuit which sets a control amount to move an objective lens so that a distance between the objective lens and a given recording layer of the an optical disc coincides with a focal position, an optical path length correction mechanism which corrects an influence of an aberration component producing an error in the focal distance, a thickness difference detection circuit which finds an amount of correction to be made by the optical path length, and an aberration correction circuit which generates a correction signal to correct the influence of the aberration component producing the error in the focal distance detected by the thickness difference detection circuit, and supplies the correction signal to the optical path length correction mechanism.

摘要翻译： 根据一个实施例，光学头装置提供信号处理电路，其设置控制量以移动物镜，使得物镜与光盘的给定记录层之间的距离与焦点位置一致，光学 路径长度校正机构，其校正产生焦距误差的像差分量的影响;求出由光程长度求出的校正量的厚度差检测电路;以及产生校正信号的像差校正电路 以校正产生由厚度差检测电路检测的焦距的误差的像差分量的影响，并将校正信号提供给光路长度校正机构。

公开(公告)号：US07292522B2

公开(公告)日：2007-11-06

申请号：US10762001

申请日：2004-01-22

申请人： Yuji Nagai ,  Chosaku Noda ,  Akihito Ogawa ,  Kazuto Kuroda

发明人： Yuji Nagai ,  Chosaku Noda ,  Akihito Ogawa ,  Kazuto Kuroda

IPC分类号： G11B7/24 ,  G11B5/09

CPC分类号： G11B27/24 ,  G11B7/0053 ,  G11B7/24082 ,  G11B20/025 ,  G11B20/1217 ,  G11B2020/1268 ,  G11B2020/1287 ,  G11B2020/1298 ,  G11B2220/216 ,  G11B2220/218 ,  G11B2220/2562 ,  G11B2220/257 ,  G11B2220/2575

摘要： Address information is formed by M wobbles (integer M is the number of wobble waves) per bit as a basic unit, and is NRZ-recorded. Also, a sync signal used in sync detection of the address information is formed by N wobbles per bit as a basic unit (integer N is the number of wobble waves and M=2N). The sync signal with such configuration (6 wobbles per bit) is recorded on the head side of the address information (12 wobbles per bit). In this way, even when external noise is large, a modulated wobble signal can be demodulated more accurately.

摘要翻译： 地址信息由每个位的M个摆动（整数M是摆动波数）作为基本单位形成，并且被NRZ记录。 此外，用于地址信息的同步检测的同步信号由每位N个摆动形成为基本单位（整数N是摆动波数，M = 2N）。 具有这种配置的同步信号（每位6个摆动）被记录在地址信息的头侧（每位12个摆动）。 以这种方式，即使当外部噪声大时，可以更精确地解调调制的摆动信号。

公开(公告)号：US20050276213A1

公开(公告)日：2005-12-15

申请号：US11150341

申请日：2005-06-13

申请人： Akihito Ogawa ,  Chosaku Noda ,  Yutaka Kashihara ,  Yuji Nagai

发明人： Akihito Ogawa ,  Chosaku Noda ,  Yutaka Kashihara ,  Yuji Nagai

IPC分类号： G11B7/005 ,  G11B7/007 ,  G11B7/26 ,  G11B27/19 ,  G11B27/24 ,  G11B7/24

CPC分类号： G11B7/00745 ,  G11B7/0053 ,  G11B7/24082 ,  G11B7/261 ,  G11B2220/216 ,  G11B2220/218 ,  G11B2220/2562 ,  G11B2220/2575

摘要： The numbers of times by which plural types of segments are consecutively arranged are limited, an address reading performance is enhanced and address information is correctly read out based on determination of the number of consecutive segments. A track is divided into physical segments, N (=17) wobble data units of constant length are formed in each physical segment, the wobble data unit (WDU) is defined to include a first unit (P) having a wobble modulation portion in a first half portion, a second unit (S) having a wobble modulation portion in a latter half portion and a third unit (U) having no wobble modulation portion, and the physical segment is defined to have segment types (TYPE 1, 2, 3) which each include the third unit (U) in a certain area thereof without fail and respectively include the first, second and a combination of the first and second units in the remaining areas. In the arrangement on the track, a lower-limit number of times M1 by which the first and second types (TYPE1, TYPE2) are consecutively arranged and an upper-limit number of times M2 by which the second types (TYPE2) are consecutively arranged are limited and the first type (TYPE1) and the second type (TYPE2) are respectively arranged immediately before and after the third type (TYPE3).

摘要翻译： 多个段连续排列的次数被限制，地址读取性能得到提高，并且基于确定连续段的数量来正确地读出地址信息。 轨道被分成物理段，在每个物理段中形成N（= 17）个恒定长度的摆动数据单元，摆动数据单元（WDU）被定义为包括具有摆动调制部分的第一单元（P） 前半部分，在后半部分具有摆动调制部分的第二单元（S）和没有摆动调制部分的第三单元（U），物理段被定义为具有段类型（类型1,2,3 ），其每一个都包括在其某一区域中的第三单元（U），并且分别包括其余区域中的第一单元，第二单元和第一单元和第二单元的组合。 在轨道上的布置中，连续布置第一和第二类型（TYPE1，TYPE2）的下限次数M1和第二类型（TYPE2）连续布置的上限次数M2 是第一类型（TYPE1）和第二类型（TYPE2）分别紧靠在第三类型（TYPE3）之前和之后。

公开(公告)号：US20050122890A1

公开(公告)日：2005-06-09

申请号：US10507515

申请日：2003-03-14

申请人： Hideo Ando ,  Kazuo Watabe ,  Hiroharu Sato ,  Hisashi Yamada ,  Yuuji Nagai ,  Chosaku Noda ,  Yutaka Kashihara ,  Akihito Ogawa ,  Tadashi Kojima

发明人： Hideo Ando ,  Kazuo Watabe ,  Hiroharu Sato ,  Hisashi Yamada ,  Yuuji Nagai ,  Chosaku Noda ,  Yutaka Kashihara ,  Akihito Ogawa ,  Tadashi Kojima

IPC分类号： G11B7/0045 ,  G11B7/006 ,  G11B7/007 ,  G11B7/24082 ,  G11B20/12 ,  G11B20/18 ,  G11B27/19 ,  G11B27/24 ,  G11B27/30 ,  G11B7/24 ,  G11B5/09

CPC分类号： G11B27/3027 ,  G11B7/006 ,  G11B7/00718 ,  G11B7/24082 ,  G11B20/12 ,  G11B20/1217 ,  G11B20/1833 ,  G11B27/24 ,  G11B2220/216 ,  G11B2220/218 ,  G11B2220/235 ,  G11B2220/2562 ,  G11B2220/2575

摘要： An information storage medium (1) has tracks in which information is recorded. The tracks are formed as a groove section (2) and a land section (3). The groove section (2) has a synchronous structure in which wobbles (2a) and (2b) formed on both walls of the groove section (2) are not displaced from each other in the circumferential direction of the medium, and the land section (3) has an asynchronous structure in which wobbles formed on both sides of the land section (3) are displaced from each other. A good signal is reproduced from each of the groove and land sections.

摘要翻译： 信息存储介质（1）具有记录信息的轨道。 轨道形成为槽部（2）和岸台部（3）。 槽部（2）具有同步结构，其中形成在槽部（2）的两壁上的摆动（2a）和（2b）在介质的圆周方向上不相互移位， 部分（3）具有异步结构，其中形成在陆部（3）的两侧上的摆动相互错开。 从凹槽和陆地部分中的每一个再现良好的信号。

公开(公告)号：US20100135436A1

公开(公告)日：2010-06-03

申请号：US12626338

申请日：2009-11-25

申请人： Yuji NAGAI ,  Chosaku Noda ,  Kazuo Watabe ,  Akihito Ogawa ,  Kazuto Kuroda ,  Nobuhisa Yoshida ,  Nobumasa Naito ,  Naoki Morishita ,  Naomasa Nakamura ,  Hideaki Ohsawa ,  Hiroharu Sato ,  Hisashi Yamada ,  Toshihiko Kaneshige

发明人： Yuji NAGAI ,  Chosaku Noda ,  Kazuo Watabe ,  Akihito Ogawa ,  Kazuto Kuroda ,  Nobuhisa Yoshida ,  Nobumasa Naito ,  Naoki Morishita ,  Naomasa Nakamura ,  Hideaki Ohsawa ,  Hiroharu Sato ,  Hisashi Yamada ,  Toshihiko Kaneshige

IPC分类号： H04L27/04

CPC分类号： G11B20/14 ,  G11B20/0021 ,  G11B20/00579 ,  G11B20/00884 ,  G11B20/1426 ,  G11B2020/1457

摘要： According to one embodiment, a first encoder encodes main information, a second encoder encodes sub-information, a first modulator modulates a carrier based on an output of the first encoder, a duplicating module duplicates an output of the second encoder to generate encoded sub-information units, and a second modulator amplitude-modulates an output of the first modulator based on the encoded sub-information units. The second modulator amplitude-modulates with σ/(μ×(2N)1/2) being 0.4 or less, wherein a noise power of a transmission path or a storage medium is σ2, a number of the encoded sub-information units is N, signal levels after amplitude modulation, which correspond to bit 1 and bit 0 of the encoded sub-information units, are A and B, and a level difference A−B is μ.

摘要翻译： 根据一个实施例，第一编码器对主信息进行编码，第二编码器对子信息进行编码，第一调制器基于第一编码器的输出调制载波，复制模块复制第二编码器的输出， 信息单元和第二调制器基于编码的子信息单元对第一调制器的输出进行幅度调制。 第二调制器以＆sgr; /（μ×（2N）1/2）振幅调制为0.4或更小，其中传输路径或存储介质的噪声功率为2，编码子信息的数量 单位为N，对应于编码子信息单元的位1和位0的幅度调制后的信号电平为A和B，电平差A-B为μ。

公开(公告)号：US07949071B2

公开(公告)日：2011-05-24

申请号：US12626338

申请日：2009-11-25

申请人： Yuji Nagai ,  Chosaku Noda ,  Kazuo Watabe ,  Akihito Ogawa ,  Kazuto Kuroda ,  Nobuhisa Yoshida ,  Nobumasa Naito ,  Naoki Morishita ,  Naomasa Nakamura ,  Hideaki Ohsawa ,  Hiroharu Sato ,  Hisashi Yamada ,  Toshihiko Kaneshige

发明人： Yuji Nagai ,  Chosaku Noda ,  Kazuo Watabe ,  Akihito Ogawa ,  Kazuto Kuroda ,  Nobuhisa Yoshida ,  Nobumasa Naito ,  Naoki Morishita ,  Naomasa Nakamura ,  Hideaki Ohsawa ,  Hiroharu Sato ,  Hisashi Yamada ,  Toshihiko Kaneshige

IPC分类号： H03C1/52 ,  G06K9/00

CPC分类号： G11B20/14 ,  G11B20/0021 ,  G11B20/00579 ,  G11B20/00884 ,  G11B20/1426 ,  G11B2020/1457

摘要： According to one embodiment, a first encoder encodes main information, a second encoder encodes sub-information, a first modulator modulates a carrier based on an output of the first encoder, a duplicating module duplicates an output of the second encoder to generate encoded sub-information units, and a second modulator amplitude-modulates an output of the first modulator based on the encoded sub-information units. The second modulator amplitude-modulates with σ/(μ×(2N)1/2) being 0.4 or less, wherein a noise power of a transmission path or a storage medium is σ2, a number of the encoded sub-information units is N, signal levels after amplitude modulation, which correspond to bit 1 and bit 0 of the encoded sub-information units, are A and B, and a level difference A−B is μ.

摘要翻译： 根据一个实施例，第一编码器对主信息进行编码，第二编码器对子信息进行编码，第一调制器基于第一编码器的输出调制载波，复制模块复制第二编码器的输出， 信息单元和第二调制器基于编码的子信息单元对第一调制器的输出进行幅度调制。 第二调制器以＆sgr; /（μ×（2N）1/2）振幅调制为0.4或更小，其中传输路径或存储介质的噪声功率为2，编码子信息的数量 单位为N，对应于编码子信息单元的位1和位0的幅度调制后的信号电平为A和B，电平差A-B为μ。

公开(公告)号：US07453780B2

公开(公告)日：2008-11-18

申请号：US11190853

申请日：2005-07-28

申请人： Akihito Ogawa ,  Hiroharu Satoh ,  Chosaku Noda

发明人： Akihito Ogawa ,  Hiroharu Satoh ,  Chosaku Noda

IPC分类号： G11B7/00

CPC分类号： G11B20/00326 ,  G11B7/0055 ,  G11B20/00086 ,  G11B20/0021 ,  G11B20/00253 ,  G11B20/00507

摘要： There is provided an information management apparatus which can make it impossible to read out data recorded on a write-once type recordable optical disk as required and the usefulness thereof is enhanced. When recorded data is destroyed on the write-once type recordable optical disk, data modulated by a modulation system of the same run length restriction as run length restriction of a modulation system used for recording data is overwritten and recorded, data is overwritten and recorded by use of patterns in which the frequency of occurrence of spaces of the longest code is higher than the frequency of occurrence of the modulation system used for recording data, or data is overwritten and recorded by use of successive patterns of the shortest code in the run length restriction of the modulation system used for recording data.

摘要翻译： 提供了一种信息管理装置，其可以根据需要读出记录在一次写入型可记录光盘上的数据，并且其有用性得到增强。 当在一次写入型可记录光盘上记录数据被破坏时，由与用于记录数据的调制系统的游程长度限制相同的行程长度限制的调制系统调制的数据被覆盖和记录，数据被覆盖并被 使用其中最长码的间隔的出现频率高于用于记录数据的调制系统的出现频率或数据的模式，通过使用运行长度中的最短码的连续模式来重写和记录 用于记录数据的调制系统的限制。

公开(公告)号：US20080123490A1

公开(公告)日：2008-05-29

申请号：US11616626

申请日：2006-12-27

申请人： Akihito Ogawa ,  Chosaku Noda

发明人： Akihito Ogawa ,  Chosaku Noda

IPC分类号： G11B3/70 ,  G11B7/00

CPC分类号： G11B27/329 ,  G11B20/00115 ,  G11B20/1217 ,  G11B2020/1278 ,  G11B2020/1285 ,  G11B2020/1288 ,  G11B2220/2537

摘要： According to one embodiment, an information recording medium which is configured to record information includes a first area which stores first information indicating the range of a currently formatted area, and a second area which stores second information indicating the range of a previously formatted area.

摘要翻译： 根据一个实施例，被配置为记录信息的信息记录介质包括存储指示当前格式化区域的范围的第一信息的第一区域和存储指示先前格式化区域的范围的第二信息的第二区域。