公开(公告)号：US08472293B2

公开(公告)日：2013-06-25

申请号：US13515654

申请日：2010-03-02

申请人： Soichiro Eto ,  Koichi Watanabe ,  Harukazu Miyamoto

发明人： Soichiro Eto ,  Koichi Watanabe ,  Harukazu Miyamoto

IPC分类号： G11B7/00

CPC分类号： G11B7/0045 ,  G11B7/1267 ,  G11B7/24038 ,  G11B2007/0013

摘要： In write power adjustment for an optical disc having a plurality of information storage layers, data of trial writing is varied by the influence of layers other than a target layer. It is difficult, therefore, to determine optimal write power. A modulation M[m] is obtained from a reproduction signal amplitude of a signal subjected to the trial writing performed with use of write powers Pw[m] (m being an integer) of a plurality of kinds. At least an optimum write power intercept Pint_opt is determined by fitting a relation between the Pw[m] and the M[m] by a modulation characteristic formula M=Masy×(1−(Pint−Pasy)/(Pw−Pasy)) having an asymptotic modulation Masy, a write power intercept Pint, and an asymptotic write power Pasy as parameters. Approximation accuracy by the fitting and/or quality of the trial writing signal are evaluated with use of at least the M[m], the modulation characteristic formula, and the Pint_opt. An optimum write power Pw_opt is calculated by performing a specified operation at least with use of the Pint_opt.

摘要翻译： 在具有多个信息存储层的光盘的写入功率调整中，试写的数据由目标层以外的层的影响而变化。 因此，很难确定最佳写入功率。 通过使用多种写入功率Pw [m]（m为整数）进行试写的信号的再现信号振幅，获得调制M [m]。 通过用调制特性公式M = Masy×（1-（Pint-Pasy）/（Pw-Pasy））拟合Pw [m]和M [m]之间的关系来确定至少最佳写功率截止Pint_opt 具有渐近调制Masy，写功率截取Pint，渐近写功率Pasy作为参数。 通过使用至少M [m]，调制特性公式和Pint_opt来评估试写信号的拟合和/或质量的近似精度。 至少通过使用Pint_opt执行指定的操作来计算最佳写入功率Pw_opt。

公开(公告)号：US20110317532A1

公开(公告)日：2011-12-29

申请号：US13227030

申请日：2011-09-07

申请人： Soichiro ETO ,  Koichi Watanabe ,  Harukazu Miyamoto

发明人： Soichiro ETO ,  Koichi Watanabe ,  Harukazu Miyamoto

IPC分类号： G11B7/12

CPC分类号： G11B7/1267

摘要： An evaluation method and print wire method which includes (a) fitting a modulation characteristic formula M,m=Msat (1−(Pws−Pasy)/(Pw,m−Pasy)) having a saturated modulation Msat, write start power Pws, and asymptotic power Pasy as parameters to a relation between a plurality of kinds of write power Pw,m and a modulation M,m which is obtained from a signal amplitude of a trial-written signal, and finding an index value of an error; and (b) evaluating whether or not the relation between the write power and the modulation is valid for write power adjustment by using the index value of the error and a predetermined value the print write method further including (c) setting the write power based upon the result of evaluating and executing a write power process with the set write power.

摘要翻译： 一种评估方法和打印线方法，其包括：（a）拟合具有饱和调制Msat的调制特性公式M，m = Msat（1-（Pws-Pasy）/（Pw，m-Pasy））写入开始功率Pws， 以及渐近功率Pasy作为从写入信号的信号幅度获得的多种写入功率Pw，m与调制M，m之间的关系的参数，并找到误差的指标值; 以及（b）通过使用误差的指标值和预定值来评估写入功率和调制之间的关系对于写入功率调整是否有效，所述打印写入方法还包括（c）基于 评估和执行具有设定写入功率的写入功率处理的结果。

公开(公告)号：US08050158B2

公开(公告)日：2011-11-01

申请号：US12569059

申请日：2009-09-29

申请人： Soichiro Eto ,  Koichi Watanabe ,  Harukazu Miyamoto

发明人： Soichiro Eto ,  Koichi Watanabe ,  Harukazu Miyamoto

IPC分类号： G11B7/00

CPC分类号： G11B7/1267

摘要： A write power adjustment method makes it possible to set optimum write power with high precision. Trial writing is conducted by using write power Pw,m (where m is an integer) of a plurality of kinds, and a modulation M,m associated with each write power is calculated. Optimum asymptotic power Pasy-opt is calculated by performing predetermined computation by using reference asymptotic power Pasy-ref and reference write start power Pws-ref which are previously determined for each medium. An evaluated value S,m=M,m×(Pw,m−Pasy-opt) is calculated by using the optimum asymptotic power Pasy-opt. Write power Pw that makes the evaluated value S equal to zero when applying straight line approximation to a relation between the write power Pw,m and the evaluated value S,m is calculated as optimum write start power Pws-opt. And optimum write power Pw-opt is found by performing predetermined computation on the optimum write start power Pws-opt.

摘要翻译： 写入功率调整方法能够以高精度设置最佳写入功率。 通过使用多种写入功率Pw，m（其中m是整数）进行试写，并且计算与每个写入功率相关联的调制M，m。 通过使用预先为每种介质确定的参考渐近功率Pasy-ref和参考写入启动功率Pws-ref执行预定的计算来计算最佳渐近功率Pasy-opt。 通过使用最佳渐近幂Pasy-opt计算评价值S，m = M，m×（Pw，m-Pasy-opt）。 写入功率Pw，当将写入功率Pw，m与评估值S之间的关系应用直线近似时，使评估值S等于零，将m计算为最佳写入开始功率Pws-opt。 通过对最佳写入开始功率Pws-opt执行预定的计算，找到最佳写入功率Pw-opt。

公开(公告)号：US20120250483A1

公开(公告)日：2012-10-04

申请号：US13515654

申请日：2010-03-02

申请人： Soichiro Eto ,  Koichi Watanabe ,  Harukazu Miyamoto

发明人： Soichiro Eto ,  Koichi Watanabe ,  Harukazu Miyamoto

IPC分类号： G11B7/1263 ,  G11B27/36

CPC分类号： G11B7/0045 ,  G11B7/1267 ,  G11B7/24038 ,  G11B2007/0013

摘要： In write power adjustment for an optical disc having a plurality of information storage layers, data of trial writing is varied by the influence of layers other than a target layer. It is difficult, therefore, to determine optimal write power. A modulation M[m] is obtained from a reproduction signal amplitude of a signal subjected to the trial writing performed with use of write powers Pw[m] (m being an integer) of a plurality of kinds. At least an optimum write power intercept Pint_opt is determined by fitting a relation between the Pw[m] and the M[m] by a modulation characteristic formula M=Masy×(1−(Pint−Pasy)/(Pw−Pasy)) having an asymptotic modulation Masy, a write power intercept Pint, and an asymptotic write power Pasy as parameters. Approximation accuracy by the fitting and/or quality of the trial writing signal are evaluated with use of at least the M[m], the modulation characteristic formula, and the Pint_opt. An optimum write power Pw_opt is calculated by performing a specified operation at least with use of the Pint_opt.

摘要翻译： 在具有多个信息存储层的光盘的写入功率调整中，试写的数据由目标层以外的层的影响而变化。 因此，很难确定最佳写入功率。 通过使用多种写入功率Pw [m]（m为整数）进行试写的信号的再现信号振幅，获得调制M [m]。 通过用调制特性公式M = Masy×（1-（Pint-Pasy）/（Pw-Pasy））拟合Pw [m]和M [m]之间的关系来确定至少最佳写功率截止Pint_opt 具有渐近调制Masy，写功率截取Pint，渐近写功率Pasy作为参数。 通过使用至少M [m]，调制特性公式和Pint_opt来评估试写信号的拟合和/或质量的近似精度。 至少通过使用Pint_opt执行指定的操作来计算最佳写入功率Pw_opt。

公开(公告)号：US08164996B2

公开(公告)日：2012-04-24

申请号：US13227030

申请日：2011-09-07

申请人： Soichiro Eto ,  Koichi Watanabe ,  Harukazu Miyamoto

发明人： Soichiro Eto ,  Koichi Watanabe ,  Harukazu Miyamoto

IPC分类号： G11B7/00

CPC分类号： G11B7/1267

摘要： An evaluation method and print wire method which includes (a) fitting a modulation characteristic formula M,m=Msat (1−(Pws−Pasy)/(Pw,m−Pasy)) having a saturated modulation Msat, write start power Pws, and asymptotic power Pasy as parameters to a relation between a plurality of kinds of write power Pw,m and a modulation M,m which is obtained from a signal amplitude of a trial-written signal, and finding an index value of an error which occurs in the fitting step; and (b) evaluating whether or not the relation between the write power and the modulation is valid for write power adjustment by using the index value of the error and a predetermined value the print write method further including (c) setting the write power based upon the result of evaluating and executing a write power process with the set write power.

摘要翻译： 一种评估方法和打印线方法，其包括：（a）拟合具有饱和调制Msat的调制特性公式M，m = Msat（1-（Pws-Pasy）/（Pw，m-Pasy））写入开始功率Pws， 和渐近功率Pasy作为多种写入功率Pw，m与从试写信号的信号幅度获得的调制M，m之间的关系的参数，并且找到发生的错误的指标值 在装配步骤; 以及（b）通过使用误差的指标值和预定值来评估写入功率和调制之间的关系是否对写入功率调整有效，所述打印写入方法还包括（c）基于 评估和执行具有设定写入功率的写入功率处理的结果。

公开(公告)号：US20110002204A1

公开(公告)日：2011-01-06

申请号：US12569059

申请日：2009-09-29

申请人： Soichiro ETO ,  Koichi Watanabe ,  Harukazu Miyamoto

发明人： Soichiro ETO ,  Koichi Watanabe ,  Harukazu Miyamoto

IPC分类号： G11B7/00

CPC分类号： G11B7/1267

摘要： A write power adjustment method makes it possible to set optimum write power with high precision. Trial writing is conducted by using write power Pw,m (where m is an integer) of a plurality of kinds, and a modulation M,m associated with each write power is calculated. Optimum asymptotic power Pasy-opt is calculated by performing predetermined computation by using reference asymptotic power Pasy-ref and reference write start power Pws-ref which are previously determined for each medium. An evaluated value S,m=M,m×(Pw,m−Pasy-opt) is calculated by using the optimum asymptotic power Pasy-opt. Write power Pw that makes the evaluated value S equal to zero when applying straight line approximation to a relation between the write power Pw,m and the evaluated value S,m is calculated as optimum write start power Pws-opt. And optimum write power Pw-opt is found by performing predetermined computation on the optimum write start power Pws-opt.

摘要翻译： 写入功率调整方法能够以高精度设置最佳写入功率。 通过使用多种写入功率Pw，m（其中m是整数）进行试写，并且计算与每个写入功率相关联的调制M，m。 通过使用预先为每种介质确定的参考渐近功率Pasy-ref和参考写入启动功率Pws-ref执行预定的计算来计算最佳渐近功率Pasy-opt。 通过使用最佳渐近幂Pasy-opt计算评价值S，m = M，m×（Pw，m-Pasy-opt）。 写入功率Pw，当将写入功率Pw，m与评估值S之间的关系应用直线近似时，使评估值S等于零，将m计算为最佳写入开始功率Pws-opt。 通过对最佳写入开始功率Pws-opt执行预定的计算，找到最佳写入功率Pw-opt。

公开(公告)号：US20110080815A1

公开(公告)日：2011-04-07

申请号：US12893069

申请日：2010-09-29

申请人： Hideharu MIKAMI ,  Koichi Watanabe ,  Harukazu Miyamoto

发明人： Hideharu MIKAMI ,  Koichi Watanabe ,  Harukazu Miyamoto

IPC分类号： G11B20/00

CPC分类号： G11B7/0065 ,  G11B7/00781 ,  G11B7/128 ,  G11B7/24088

摘要： The present invention achieves an optical recording and regenerating apparatus focusing two opposed beams of light at a same place in an optical recording medium to record a standing wave generated by interference of the two beams of light. In the apparatus, phase information is recorded in the optical recording medium by a phase modulating means for modulating phase of one of the two beams of light. The generation reference light generated from a light source is allowed to interfere with regenerated light generated by projecting one of the two beams of light onto the optical recording medium to generate three or more beams of interfering light having different interference phases are simultaneously generated. The three or more beams of interfering light are then detected, and the phase modulated by the phase modulating means is demodulated from an output of the detector.

摘要翻译： 本发明实现了在光记录介质中的相同位置聚焦两个相对的光束的光学记录和再生装置，以记录由两束光的干涉产生的驻波。 在该装置中，通过用于调制两束光之一的相位的相位调制装置将相位信息记录在光学记录介质中。 从光源产生的生成参考光被允许同时产生通过将两个光束中的一个投影到光学记录介质上而产生三个或更多个具有不同干涉相位的干涉光束的再生光。 然后检测三个或更多个干涉光束，并且由相位调制装置调制的相位从检测器的输出解调。

公开(公告)号：US20110317535A1

公开(公告)日：2011-12-29

申请号：US13230290

申请日：2011-09-12

申请人： Harukazu Miyamoto ,  Koichi Watanabe ,  Yutaka Nagai ,  Koichiro Nishimura ,  Takakiyo Yasukawa

发明人： Harukazu Miyamoto ,  Koichi Watanabe ,  Yutaka Nagai ,  Koichiro Nishimura ,  Takakiyo Yasukawa

IPC分类号： G11B27/36 ,  G11B7/24

CPC分类号： G11B7/00736 ,  G11B7/1267 ,  G11B7/24038 ,  G11B2007/0013

摘要： A multilayered optical disk an information recording method and information reproducing method utilizing the disk includes three or more recordable or rewritable information recording layers, which has, among the plurality of information recording layers, at least a first recording layer and a second recording layer located on a side nearer to a light incident surface than the first recording layer, and which respectively has a first test area configured by a plurality of segments in the first recording layer, a second test area configured by a plurality of segments in the second recording layer, and comprising a specific area in which there is recorded information used to determine whether or not the respective segments in the first test area can be used.

摘要翻译： 一种多层光盘，利用该盘的信息记录方法和信息再现方法包括三个或更多个可记录或可重写的信息记录层，它们在多个信息记录层之中至少存在第一记录层和位于 比第一记录层更靠近光入射表面的一侧，分别具有由第一记录层中的多个段构成的第一测试区，由第二记录层中的多个段构成的第二测试区， 并且包括其中存储有用于确定第一测试区域中的各个段是否可以被使用的记录信息的特定区域。

公开(公告)号：US09286929B2

公开(公告)日：2016-03-15

申请号：US12570106

申请日：2009-09-30

申请人： Harukazu Miyamoto ,  Koichi Watanabe ,  Yutaka Nagai ,  Koichiro Nishimura ,  Takakiyo Yasukawa

发明人： Harukazu Miyamoto ,  Koichi Watanabe ,  Yutaka Nagai ,  Koichiro Nishimura ,  Takakiyo Yasukawa

IPC分类号： G11B7/007 ,  G11B7/1267 ,  G11B7/24038 ,  G11B7/00

CPC分类号： G11B7/00736 ,  G11B7/1267 ,  G11B7/24038 ,  G11B2007/0013

摘要： A method for performing recording on a multilayered optical disk which has three or more recordable or rewritable information recording layers with a first recording layer and a second recording layer located nearer to a light incident surface than the first recording layer, and which respectively has a first test area configured by a plurality of segments in the first recording layer and in the second recording layer, wherein a predetermined radial distance L is defined beforehand. When an arbitrary segment in the second test area is test-recorded, a segment in the first test area, the radial distance of which from the recorded test area in the second test area is within the range of the predetermined radial distance L, is set as a segment in which test recording is not performed.

摘要翻译： 一种用于在具有三个或更多个可记录或可重写信息记录层的多层光盘上执行记录的方法，所述信息记录层具有位于比第一记录层更靠近光入射表面的第一记录层和第二记录层，并且分别具有第一 测试区域由第一记录层和第二记录层中的多个段构成，其中预先定义预定的径向距离L. 当对第二测试区域中的任意段进行测试记录时，将第一测试区域中与第二测试区域中记录的测试区域的径向距离设置在预定的径向距离L的范围内的段被设置 作为不执行测试记录的段。

公开(公告)号：US08400898B2

公开(公告)日：2013-03-19

申请号：US12893069

申请日：2010-09-29

申请人： Hideharu Mikami ,  Koichi Watanabe ,  Harukazu Miyamoto

发明人： Hideharu Mikami ,  Koichi Watanabe ,  Harukazu Miyamoto

IPC分类号： G11B7/00

CPC分类号： G11B7/0065 ,  G11B7/00781 ,  G11B7/128 ,  G11B7/24088

摘要： The present invention achieves an optical recording and reproducing apparatus focusing two opposed beams of light at a same place in an optical recording medium to record a standing wave generated by interference of the two beams of light. In the apparatus, phase information is recorded in the optical recording medium by a phase modulating means for modulating phase of one of the two beams of light. The reproduction reference light generated from a light source is allowed to interfere with reproduced light generated by projecting one of the two beams of light onto the optical recording medium to generate three or more beams of interfering light having different interference phases are simultaneously generated. The three or more beams of interfering light are then detected, and the phase modulated by the phase modulating means is demodulated from an output of the detector.

摘要翻译： 本发明实现了在光记录介质中的相同位置聚焦两个相对的光束以记录由两束光的干涉产生的驻波的光学记录和再现装置。 在该装置中，通过用于调制两束光之一的相位的相位调制装置将相位信息记录在光学记录介质中。 从光源产生的再现参考光被允许同时产生通过将两个光束中的一个投影到光记录介质上而产生三个或更多个具有不同干涉相位的干涉光束的再生光。 然后检测三个或更多个干涉光束，并且由相位调制装置调制的相位从检测器的输出解调。