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：US07978576B2

公开(公告)日：2011-07-12

申请号：US12760935

申请日：2010-04-15

申请人： Soichiro Eto ,  Koichi Watanabe ,  Takahiro Kurokawa

发明人： Soichiro Eto ,  Koichi Watanabe ,  Takahiro Kurokawa

IPC分类号： G11B15/52

CPC分类号： G11B7/0062 ,  G11B7/1267

摘要： A power adjustment method in which a modulation index is calculated from reproduced signals of patterns recorded by irradiating light onto an optical information recording medium with a recording power varied and an optimum power of irradiation light is set up using the modulation index. The power adjustment method includes calculating an optimum value PcO of a predetermined correction term Pc using a relation of a value obtained by subtracting the predetermined correction term Pc from the recording power and the modulation index, finding a value Pth of the recording power at which the modulation index becomes substantially zero in the relation of the value obtained by subtracting the optimum value PcO from the recording power and the modulation index, and setting up a value obtained by multiplying the value of Pth by a predetermined constant as a recording power of each of the recording patterns.

摘要翻译： 一种功率调整方法，其中根据通过将光照射到记录功率变化的光信息记录介质上记录的图案的再现信号来计算调制指数，并且使用调制指数建立照射光的最佳功率。 功率调整方法包括使用通过从记录功率减去预定校正项Pc和调制指数获得的值的关系来计算预定校正项Pc的最佳值PcO，找到记录功率的记录功率的值Pth， 调制指数在通过从记录功率减去最佳值PcO而获得的值与调制指数之间的关系基本上为零，并且将通过将Pth的值乘以预定常数获得的值作为每个的记录功率 录音模式。

公开(公告)号：US07751288B2

公开(公告)日：2010-07-06

申请号：US11704352

申请日：2007-02-09

申请人： Soichiro Eto ,  Koichi Watanabe ,  Takahiro Kurokawa

发明人： Soichiro Eto ,  Koichi Watanabe ,  Takahiro Kurokawa

IPC分类号： G11B15/52

CPC分类号： G11B7/0062 ,  G11B7/1267

摘要： A write power adjustment method and optical read/write apparatus for accurate optimum write power setup. Different levels of write power Pwm are used to perform a test write and calculate a modulation Mm corresponding to each level of write power Pwm. Different write power compensated values Pcn are used to calculate an evaluated value Smn=Mm×(Pwm−Pcn). Pcn that maximizes the linearity of the relationship between compensated write power (Pwm−Pcn) and evaluated value Smn is determined as an optimum write power compensated value PcO. Compensated write power PthO that provides a modulation of zero, that is, an evaluated value SmO of zero, when the relationship between compensated write power (Pwm−PcO) for PcO and evaluated value SmO is subjected to linear approximation is determined. PthO and optimum write power compensated value PcO are used to calculate a write power threshold Pth=PthO+PcO. A predetermined calculation is performed on Pth to determine optimum write power Popt. In contrast to a conventional write power adjustment method (κ method), the present invention makes it possible to accurately adjust for the optimum write power even when the optical disc's write power Pwm-to-evaluated value M×Pw relationship is not linear or its modulation M varies.

摘要翻译： 一种写入功率调整方法和光学读/写装置，用于精确的最佳写入功率设置。 使用不同级别的写入功率Pwm进行测试写入，并计算与写入功率Pwm对应的调制Mm。 使用不同的写功率补偿值Pcn来计算评估值Smn = Mm×（Pwm-Pcn）。 将补偿写入功率（Pwm-Pcn）与评估值Smn之间的关系的线性度最大化的Pcn被确定为最佳写入功率补偿值PcO。 确定当PcO的补偿写入功率（Pwm-PcO）与评估值SmO之间的关系经受线性近似时，提供零调制的补偿写入功率PthO，即评估值SmO为零。 PthO和最佳写功率补偿值PcO用于计算写功率阈值Pth = PthO + PcO。 在Pth上执行预定的计算以确定最佳写入功率Popt。 与传统的写入功率调整方法（＆kgr;方法）相反，即使当光盘的写入功率Pwm至评估值M×Pw关系不是线性时，本发明也可以精确地调整最佳写入功率， 其调制M变化。

公开(公告)号：US20100195459A1

公开(公告)日：2010-08-05

申请号：US12760935

申请日：2010-04-15

申请人： Soichiro Eto ,  Koichi Watanabe ,  Takahiro Kurokawa

发明人： Soichiro Eto ,  Koichi Watanabe ,  Takahiro Kurokawa

IPC分类号： G11B19/00

CPC分类号： G11B7/0062 ,  G11B7/1267

摘要： A power adjustment method in which a modulation index is calculated from reproduced signals of patterns recorded by irradiating light onto an optical information recording medium with a recording power varied and an optimum power of irradiation light is set up using the modulation index. The power adjustment method includes calculating an optimum value PcO of a predetermined correction term Pc using a relation of a value obtained by subtracting the predetermined correction term Pc from the recording power and the modulation index, finding a value Pth of the recording power at which the modulation index becomes substantially zero in the relation of the value obtained by subtracting the optimum value PcO from the recording power and the modulation index, and setting up a value obtained by multiplying the value of Pth by a predetermined constant as a recording power of each of the recording patterns.

摘要翻译： 一种功率调整方法，其中根据通过将光照射到记录功率变化的光信息记录介质上记录的图案的再现信号来计算调制指数，并且使用调制指数建立照射光的最佳功率。 功率调整方法包括使用通过从记录功率减去预定校正项Pc和调制指数获得的值的关系来计算预定校正项Pc的最佳值PcO，找到记录功率的记录功率的值Pth， 调制指数在通过从记录功率减去最佳值PcO而获得的值与调制指数之间的关系基本上为零，并且将通过将Pth的值乘以预定常数获得的值作为每个的记录功率 录音模式。

公开(公告)号：US20070286042A1

公开(公告)日：2007-12-13

申请号：US11704352

申请日：2007-02-09

申请人： Soichiro Eto ,  Koichi Watanabe ,  Takahiro Karokawa

发明人： Soichiro Eto ,  Koichi Watanabe ,  Takahiro Karokawa

IPC分类号： G11B7/004

CPC分类号： G11B7/0062 ,  G11B7/1267

摘要： A write power adjustment method and optical read/write apparatus for accurate optimum write power setup. Different levels of write power Pwm are used to perform a test write and calculate a modulation Mm corresponding to each level of write power Pwm. Different write power compensated values Pcn are used to calculate an evaluated value Smn=Mm×(Pwm−Pcn). Pcn that maximizes the linearity of the relationship between compensated write power (Pwm−Pcn) and evaluated value Smn is determined as an optimum write power compensated value PcO. Compensated write power PthO that provides a modulation of zero, that is, an evaluated value SmO of zero, when the relationship between compensated write power (Pwm−PcO) for PcO and evaluated value SmO is subjected to linear approximation is determined. PthO and optimum write power compensated value PcO are used to calculate a write power threshold Pth=PthO+PcO. A predetermined calculation is performed on Pth to determine optimum write power Popt. In contrast to a conventional write power adjustment method (κ method), the present invention makes it possible to accurately adjust for the optimum write power even when the optical disc's write power Pwm-to-evaluated value M×Pw relationship is not linear or its modulation M varies.

摘要翻译： 一种写入功率调整方法和光学读/写装置，用于精确的最佳写入功率设置。 使用不同级别的写入功率Pwm进行测试写入，并计算与写入功率Pwm对应的调制Mm。 不同的写功率补偿值Pcn用于计算评估值Smn = Mmx（Pwm-Pcn）。 将补偿写入功率（Pwm-Pcn）与评估值Smn之间的关系的线性度最大化的Pcn被确定为最佳写入功率补偿值PcO。 确定当PcO的补偿写入功率（Pwm-PcO）与评估值SmO之间的关系经受线性近似时，提供零调制的补偿写入功率PthO，即评估值SmO为零。 PthO和最佳写功率补偿值PcO用于计算写功率阈值Pth = PthO + PcO。 在Pth上执行预定的计算以确定最佳写入功率Popt。 与传统的写入功率调整方法（kappa方法）相比，本发明即使当光盘的写入功率Pwm至估计值MxPw关系不是线性或其调制M时也可以精确地调节最佳写入功率 不一样