公开(公告)号：US07133344B2

公开(公告)日：2006-11-07

申请号：US10466327

申请日：2002-01-28

申请人： Hideaki Yano ,  Kenji Asano ,  Takanori Kishida

发明人： Hideaki Yano ,  Kenji Asano ,  Takanori Kishida

IPC分类号： G11B7/00

CPC分类号： G11B7/126 ,  G11B7/0045 ,  G11B7/1267 ,  G11B11/1051 ,  G11B11/10515 ,  G11B11/10595

摘要： A disk recording-playback device including a laser drive circuit for feeding a drive signal to an optical head and adjusting the power of a laser beam irradiated by the optical head, an error correcting circuit for detecting an error rate of a reproduced signal, and a system controller for controlling operation of the laser drive circuit for signal reproduction and signal recording based on the output of the error correcting circuit. The system controller successively sets the laser powers to at least three different values, obtains evaluation data for each laser power, approximates the relationships between the laser powers and the evaluation data to a quadratic curve, whereby an optimum laser power is derived corresponding to a vertex of the quadratic curve. Accordingly the optimum reproduction power and recording power are set, to thereby record and reproduce signals with high accuracy.

摘要翻译： 一种盘记录重放装置，包括：激光驱动电路，用于将驱动信号馈送到光头并调节由光头照射的激光束的功率;纠错电路，用于检测再生信号的误码率;以及 系统控制器，用于基于纠错电路的输出来控制用于信号再现和信号记录的激光驱动电路的操作。 系统控制器将激光功率连续地设置为至少三个不同的值，获得每个激光功率的评估数据，将激光功率与评估数据之间的关系近似为二次曲线，从而相应于顶点导出最佳激光功率 的二次曲线。 因此，设定了最佳再现功率和记录功率，从而高精度地记录和再现信号。

公开(公告)号：US07345974B2

公开(公告)日：2008-03-18

申请号：US10975074

申请日：2004-10-28

申请人： Takanori Kishida ,  Tsuyoshi Yamamoto ,  Katsumi Hattori ,  Masato Fuma ,  Hiroshi Watanabe

发明人： Takanori Kishida ,  Tsuyoshi Yamamoto ,  Katsumi Hattori ,  Masato Fuma ,  Hiroshi Watanabe

IPC分类号： G11B7/00

CPC分类号： G11B7/1267 ,  G11B7/00736 ,  G11B7/125

摘要： An object of the present invention is to provide an optical recording/reproducing apparatus capable of improving medium usability through a laser power adjusting process while keeping compatibility with a read only type medium. The optical recording/reproducing apparatus adjusts laser power using a PCA till the PCA is used up. After the PCA is used up, an additional area is reserved at the outermost circumference position, thereafter when the additional area is used up, a new additional area is reserved at an inner circumference side of the used up additional area to adjust laser power. The additional area is reserved at an outer circumference than a lead-out area, and therefore format compatibility with a read only type optical disc can be maintained. The additional area is reserved only when the PCA is used up, thus capacity compatibility with a read only type optical disc can be maintained while laser power is adjusted with only the PCA.

摘要翻译： 本发明的目的是提供一种能够通过激光功率调整过程改善介质可用性同时保持与只读型介质的兼容性的光学记录/再现装置。 光学记录/再现装置使用PCA调节激光功率，直到PCA被消耗。 在PCA用完之后，在最外周位置保留另外的区域，此后当附加区域用完时，在用尽的附加区域的内圆周侧保留新的附加区域以调整激光功率。 附加区域在外周保留在引出区域，因此可以保持与只读型光盘的格式兼容性。 仅当PCA用完时，才能保留附加区域，因此只能使用PCA调整激光功率，才能保持与只读型光盘的兼容性。

公开(公告)号：US20100167024A1

公开(公告)日：2010-07-01

申请号：US12647375

申请日：2009-12-24

申请人： Norihiro Natsume ,  Takanori Kishida ,  Hayato Namai ,  Kyoyu Yasuda ,  Satoshi Dei ,  Koichi Hasegawa

发明人： Norihiro Natsume ,  Takanori Kishida ,  Hayato Namai ,  Kyoyu Yasuda ,  Satoshi Dei ,  Koichi Hasegawa

IPC分类号： B32B3/10 ,  G03F7/004 ,  G03F7/20

CPC分类号： G03F7/0757 ,  Y10T428/24802

摘要： A negative-tone radiation-sensitive composition includes a polymer, a photoacid generator, and a solvent. The polymer has a polystyrene-reduced weight average molecular weight of 4000 to 200,000, and is obtained by hydrolysis and condensation of at least one hydrolyzable silane compound among compounds shown by RaSi(OR1)4-a, Si(OR2)4 and R3x(R4O)3-xSi—(R7)z—Si(OR5)3-yR6y. “R” represents a fluorine atom, an alkylcarbonyloxy group, or a linear or branched alkyl group having 1 to 5 carbon atoms. “R1” represents a monovalent organic group. “R2” represents a monovalent organic group. “R3” and “R6” individually represent a fluorine atom, an alkylcarbonyloxy group, or a linear or branched alkyl group having 1 to 5 carbon atoms “R4” and “R5” individually represent a monovalent organic group. “R7” represents an oxygen atom, a phenylene group, or a group —(CH2)m—. The content of units derived from the compound RaSi(OR1)4-a is 50 to 100 mol % of the total units forming the polymer.

摘要翻译： 负色辐射敏感组合物包括聚合物，光致酸产生剂和溶剂。 聚苯乙烯换算的重均分子量为4000〜200,000，通过RaSi（OR1）4-a，Si（OR2）4和R3x（OR1）4-a表示的化合物中至少一种可水解硅烷化合物的水解和缩合得到， R4O）3-xSi-（R7）z-Si（OR5）3-yR6y。 “R”表示氟原子，烷基羰基氧基或碳原子数1〜5的直链或支链烷基。 “R1”表示一价有机基团。 “R2”表示一价有机基团。 “R3”和“R6”分别表示氟原子，烷基羰基氧基或碳原子数为1〜5的直链或支链烷基，“R4”和“R5”分别表示一价有机基团。 “R7”表示氧原子，亚苯基或基团 - （CH2）m-。 衍生自化合物RaSi（OR1）4-a的单元的含量为形成聚合物的总单元的50〜100摩尔％。

公开(公告)号：US20050094519A1

公开(公告)日：2005-05-05

申请号：US10975074

申请日：2004-10-28

申请人： Takanori Kishida ,  Tsuyoshi Yamamoto ,  Katsumi Hattori ,  Masato Fuma ,  Hiroshi Watanabe

发明人： Takanori Kishida ,  Tsuyoshi Yamamoto ,  Katsumi Hattori ,  Masato Fuma ,  Hiroshi Watanabe

IPC分类号： G11B7/007 ,  G11B7/004 ,  G11B7/0045 ,  G11B7/125 ,  G11B5/09

CPC分类号： G11B7/1267 ,  G11B7/00736 ,  G11B7/125

摘要： An object of the present invention is to provide an optical recording/reproducing apparatus capable of improving medium usability through a laser power adjusting process while keeping compatibility with a read only type medium. The optical recording/reproducing apparatus adjusts laser power using a PCA till the PCA is used up. After the PCA is used up, an additional area is reserved at the outermost circumference position, thereafter when the additional area is used up, a new additional area is reserved at an inner circumference side of the used up additional area to adjust laser power. The additional area is reserved at an outer circumference than a lead-out area, and therefore format compatibility with a read only type optical disc can be maintained. The additional area is reserved only when the PCA is used up, thus capacity compatibility with a read only type optical disc can be maintained while laser power is adjusted with only the PCA.

摘要翻译： 本发明的目的是提供一种能够通过激光功率调整过程改善介质可用性同时保持与只读型介质的兼容性的光学记录/再现装置。 光学记录/再现装置使用PCA调节激光功率，直到PCA被消耗。 在PCA用完之后，在最外周位置保留另外的区域，此后当附加区域用尽时，在用尽的附加区域的内圆周侧保留新的附加区域以调整激光功率。 附加区域在外周保留在引出区域，因此可以保持与只读型光盘的格式兼容性。 仅当PCA用完时，才能保留附加区域，因此只能使用PCA调整激光功率，才能保持与只读型光盘的兼容性。