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140 条记录 (耗时 0.047 秒)

    Information recording and reproducing apparatus, evaluation method, and information recording and reproducing medium
    32.
    发明申请
    Information recording and reproducing apparatus, evaluation method, and information recording and reproducing medium 失效
    信息记录和再现装置，评估方法和信息记录和再现介质

    公开(公告)号：US20060280093A1

    公开(公告)日：2006-12-14

    申请号：US11501705

    申请日：2006-08-10

    申请人： Yuji Nagai ,  Yutaka Kashihara ,  Akihito Ogawa

    发明人： Yuji Nagai ,  Yutaka Kashihara ,  Akihito Ogawa

    IPC分类号： G11B5/09

    CPC分类号： G11B20/1816 ,  G11B7/0062 ,  G11B20/10009 ,  G11B20/10111

    摘要： An evaluation method for calculating an identification signal by using PRML, comprises a table storing true patterns and ideal signals thereof, false patterns corresponding to the true patterns and ideal signals thereof, and Euclidean distance between the true pattern and the false pattern, a calculating unit, when a recording signal synchronized with an identification signal coincides with any pattern of the table, calculates a distance between Euclidean distance between the ideal signal of the true pattern and a reproduction signal and Euclidean distance between the ideal signal of the false pattern and a reproduction signal, and an evaluation unit which evaluates an identification signal by using an average and standard deviation of difference. A table for patterns is created for a likely mistaken pattern, whereby calculating an evaluation value with high precision, of a signal quality, with a small amount of calculation.

    摘要翻译： 一种用于通过使用PRML来计算识别信号的评估方法，包括存储真实图案及其理想信号的表，与其真实图案和理想信号相对应的伪图案，以及真图案与假图案之间的欧氏距离，计算单元 当与识别信号同步的记录信号与表格的任何图形一致时，计算真实图案的理想信号与再现信号之间的欧几里德距离与假图案的理想信号之间的欧几里德距离与再现 信号和评估单元，其通过使用差的平均和标准差来评估识别信号。 创建用于模式的表格用于可能的错误模式，由此以较少的计算量以高精度计算信号质量的评估值。

    Recording/reproducing method and recording/reproducing apparatus and optical disk
    34.
    发明申请
    Recording/reproducing method and recording/reproducing apparatus and optical disk 失效
    记录/再现方法和记录/再现装置和光盘

    公开(公告)号：US20050254412A1

    公开(公告)日：2005-11-17

    申请号：US11127223

    申请日：2005-05-12

    申请人： Akihito Ogawa ,  Yutaka Kashihara ,  Hideki Takahashi ,  Yutaka Yamanaka ,  Shigeru Shimonou ,  Tatsunori Ide

    发明人： Akihito Ogawa ,  Yutaka Kashihara ,  Hideki Takahashi ,  Yutaka Yamanaka ,  Shigeru Shimonou ,  Tatsunori Ide

    IPC分类号： G11B7/0045 ,  G11B5/09 ,  G11B7/007 ,  G11B7/125 ,  G11B7/24

    CPC分类号： G11B7/1267 ,  G11B7/00736

    摘要： An optical disk medium in which a learning area can be expanded, an optical disk information recording method and an optical disk apparatus are provided. A first lead-in area and second lead-in area are provided on the inner side and outer side of a data area. The first lead-in area includes a first learning area, management information recording area and data connection area and the second lead-in area includes a protection area which protects the user data in the inner portion thereof and a second learning area which is provided on the outer side of the protection area and sets an optimum condition for an operation of recording data into the data area. An area in which information indicating the utilization state of the protection area is recorded is prepared in one of the management information recording area and data connection area.

    摘要翻译： 提供学习区域可扩展的光盘介质，光盘信息记录方法和光盘装置。 第一导入区和第二导入区设置在数据区的内侧和外侧。 第一导入区域包括第一学习区域，管理信息记录区域和数据连接区域，并且第二导入区域包括保护其内部的用户数据的保护区域和设置在其上的第二学习区域 保护区域的外侧，并为将数据记录到数据区域中的操作设定最佳条件。 在管理信息记录区域和数据连接区域之一中准备记录了表示保护区域的使用状态的信息的区域。

    Two-layer optical disk and recording/reproducing optical disk apparatus of the two-layer optical disk
    36.
    发明授权
    Two-layer optical disk and recording/reproducing optical disk apparatus of the two-layer optical disk 有权
    双层光盘的双层光盘和记录/再现光盘装置

    公开(公告)号：US07835256B2

    公开(公告)日：2010-11-16

    申请号：US11519527

    申请日：2006-09-12

    申请人： Yutaka Yamanaka ,  Shuichi Ohkubo ,  Kazuo Watabe ,  Yutaka Kashihara ,  Akihito Ogawa

    发明人： Yutaka Yamanaka ,  Shuichi Ohkubo ,  Kazuo Watabe ,  Yutaka Kashihara ,  Akihito Ogawa

    IPC分类号： G11B7/24

    CPC分类号： G11B7/00736 ,  G11B7/24038

    摘要： A two-layer recording type optical disk capable of realizing stable recording and reproduction without being affected by another recording layer and an optical disk apparatus for the two-layer recording type optical disk are provided. In layouts of various areas in the optical disk, a position where a border between a recorded part and an unrecorded part is formed on one recording layer is set so that the position is always separated from a position where a border between a recorded part and an unrecorded part is formed on another recording layer by a predetermined clearance amount. Moreover, to a recording layer farther from an incident surface, test recording or data recording is always performed through a recorded part on a closer recording layer.

    摘要翻译： 提供能够实现稳定的记录和再现而不受另一记录层的影响的双层记录型光盘和用于双层记录型光盘的光盘装置。 在光盘中的各个区域的布局中，设置记录部分和未记录部分之间的边界形成在一个记录层上的位置，使得位置总是与记录部分和记录部分之间的边界的位置分离 未记录部分在另一记录层上形成预定间隙量。 此外，对于距离入射面更远的记录层，总是通过更靠近记录层上的记录部分进行测试记录或数据记录。