Information recording and reproducing apparatus, evaluation method, and information recording and reproducing medium
    81.
    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

    IPC分类号: G11B5/09

    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
    86.
    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

    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。

    Writable information recording and reproducing apparatus
    88.
    发明授权
    Writable information recording and reproducing apparatus 有权
    可写信息记录和再现设备

    公开(公告)号:US09064506B2

    公开(公告)日:2015-06-23

    申请号:US13618173

    申请日:2012-09-14

    IPC分类号: G11B7/09 G11B7/095 G11B7/00

    摘要: According to one embodiment, an information recording and reproducing apparatus including, a focus control module, an objective lens control module, a calculation module, and a tracking control module. If, detection the recording marks line, to focus a laser light of a second wavelength to the recording layer through an objective lens and to operation a recording layer tracking control using a tracking error signal taken out from a second reflected light and a laser light of a first wavelength to a track groove through the objective lens and to operation a guide layer tracking control to control the objective lens using a tracking error signal taken out from a first reflected light.

    摘要翻译: 根据一个实施例,一种信息记录和再现装置,包括聚焦控制模块,物镜控制模块,计算模块和跟踪控制模块。 如果检测记录标记线,则通过物镜将第二波长的激光聚焦到记录层,并且使用从第二反射光和第二反射光的激光中取出的跟踪误差信号来操作记录层跟踪控制 通过物镜的轨道槽的第一波长,并且使用从第一反射光取出的跟踪误差信号来操作引导层跟踪控制来控制物镜。

    DATA STORAGE DEVICE
    89.
    发明申请
    DATA STORAGE DEVICE 审中-公开
    数据存储设备

    公开(公告)号:US20120294130A1

    公开(公告)日:2012-11-22

    申请号:US13478441

    申请日:2012-05-23

    摘要: According to one embodiment, a data storage device includes a data recording medium, a light source, and following units. The light application unit splits the laser beam from the light source, and applies the first and second light beams to the data recording medium from different directions. The light detection unit detects reflected light beams from the data recording medium. The light deflection unit deflects the reflected light beams to direct the reflected light beams to the light detection unit. The arithmetic unit calculates positional error information based on the detection signal. The drive unit displaces a position and a posture of the data recording medium based on the positional error information.

    摘要翻译: 根据一个实施例,数据存储设备包括数据记录介质,光源和后续单元。 光施加单元将来自光源的激光束分离,并且将第一和第二光束从不同方向施加到数据记录介质。 光检测单元检测来自数据记录介质的反射光束。 光偏转单元偏转反射光束以将反射光束引导到光检测单元。 算术单元基于检测信号来计算位置误差信息。 驱动单元基于位置误差信息移位数据记录介质的位置和姿势。

    PICKUP HEAD, INFORMATION RECORDING METHOD AND REPRODUCING METHOD
    90.
    发明申请
    PICKUP HEAD, INFORMATION RECORDING METHOD AND REPRODUCING METHOD 失效
    PICKUP头,信息记录方法和再现方法

    公开(公告)号:US20120224462A1

    公开(公告)日:2012-09-06

    申请号:US13410649

    申请日:2012-03-02

    IPC分类号: G11B7/09 G11B7/085

    摘要: According to one embodiment, a pickup head includes a plurality of light sources, a first objective lens, second objective lens, a driving unit, a first control unit, a second control unit, light receiving units. The first objective lens focuses a first light beam at a first recording layer. The second objective lens focuses a second light beam at a second recording layer. The driving unit moves the first objective lens and the second objective lens in a first direction and a second direction. The first control unit corrects displacement from target track along the first direction. The second control unit controls a moving direction of a position of the second light spot in the second direction.

    摘要翻译: 根据一个实施例,拾取头包括多个光源,第一物镜,第二物镜,驱动单元,第一控制单元,第二控制单元,光接收单元。 第一物镜将第一光束聚焦在第一记录层。 第二物镜将第二光束聚焦在第二记录层。 驱动单元沿第一方向和第二方向移动第一物镜和第二物镜。 第一控制单元沿着第一方向校正与目标轨迹的位移。 第二控制单元控制第二光点在第二方向上的位置的移动方向。