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    Optical disc apparatus and access control method of the same
    52.
    发明授权
    Optical disc apparatus and access control method of the same 失效
    光盘装置和访问控制方法相同

    公开(公告)号：US07616533B2

    公开(公告)日：2009-11-10

    申请号：US11490710

    申请日：2006-07-21

    申请人： Mitsuru Harai ,  Tsuyoshi Toda ,  Nobuhiro Takeda

    发明人： Mitsuru Harai ,  Tsuyoshi Toda ,  Nobuhiro Takeda

    IPC分类号： G11B7/00

    CPC分类号： G11B7/08517 ,  G11B7/00718

    摘要： An optical disc apparatus, as a learning operation before a recording or reproducing operation, rotates an optical disc at a first speed to read PID information, discriminates between lands and grooves of the optical disc, detects switching positions between lands and grooves, sets a rotation angle position of tracking pull-in of an objective lens of a time length that allows the PID information to be stably read, with respect to the switching position, and stores the set position information of tracking pull-in as learning result information. During recording or reproducing, the optical disc apparatus rotates the optical disk at a second speed higher than the first speed, pulls in the objective lens for tracking based on the stored position information of tracking pull-in, reads PID information, and performs the recording or reproducing operation while discriminating between lands and grooves and detecting switching positions between lands and grooves.

    摘要翻译： 作为记录或再现操作之前的学习操作的光盘装置，以第一速度旋转光盘以读取PID信息，区分光盘的平台和凹槽之间，检测平台和凹槽之间的切换位置，设置旋转 相对于切换位置使得能够稳定地读取PID信息的时间长度的物镜的跟踪拉入的角度位置，并存储跟踪拉入的设定位置信息作为学习结果信息。 在记录或再现期间，光盘装置以比第一速度高的第二速度旋转光盘，根据所存储的跟踪引入位置信息，读取PID信息，拉入用于跟踪的物镜，读取PID信息，并执行记录 或者在区分焊盘和槽之间进行再现操作，并且检测焊盘和槽之间的切换位置。

    Information recording systems and methods utilizing controlled mark-length
    55.
    发明授权
    Information recording systems and methods utilizing controlled mark-length 有权
    利用受控标记长度的信息记录系统和方法

    公开(公告)号：US07391695B2

    公开(公告)日：2008-06-24

    申请号：US11504572

    申请日：2006-08-14

    申请人： Tsuyoshi Toda ,  Takakiyo Yasukawa

    发明人： Tsuyoshi Toda ,  Takakiyo Yasukawa

    IPC分类号： G11B7/0045

    CPC分类号： G11B7/0062 ,  G11B7/00456 ,  G11B20/1426 ,  G11B2020/1288 ,  G11B2220/2541

    摘要： The mark-length recording system whereby information is recorded by changing the lengths of a recorded portion and an unrecorded or erased portion has a problem that, when new information is recorded in an already recorded region, the newly recorded information may deteriorate in reliability because the length and width of the newly recorded mark are different from those of the previously recorded mark and a part may exist that is not completely erased at the time of overwriting. The invention widens a setting freedom of the recording power and controls the length and width of the recorded mark by making the effective recording pulse length (the length from a rise of a first pulse to a fall of a last pulse) satisfy a relation: (effective recording pulse length)

    摘要翻译： 通过改变记录部分和未记录或擦除部分的长度来记录信息的标记长度记录系统具有这样的问题，即当新信息被记录在已经记录的区域中时，新记录的信息可能劣化可靠性，因为 新记录的标记的长度和宽度与先前记录的标记的长度和宽度不同，并且可能存在在重写时未完全擦除的部分。 本发明通过使有效记录脉冲长度（从第一脉冲的上升到最后脉冲的下降的长度）满足以下关系来扩大记录功率的设定自由度并控制记录标记的长度和宽度： 有效记录脉冲长度）<（记录码长度，即要记录的数据长度）-2T（参考时钟周期的两倍）。

    Optical disc recording apparatus and recording power control method
    56.
    发明申请
    Optical disc recording apparatus and recording power control method 有权
    光盘记录装置和记录功率控制方法

    公开(公告)号：US20080089204A1

    公开(公告)日：2008-04-17

    申请号：US11581758

    申请日：2006-10-17

    申请人： Tomoya Hoshi ,  Atsushi Yamada ,  Tooru Kawashima ,  Mitsuhiro Nishidate ,  Tsuyoshi Toda ,  Koichiro Nishimura

    发明人： Tomoya Hoshi ,  Atsushi Yamada ,  Tooru Kawashima ,  Mitsuhiro Nishidate ,  Tsuyoshi Toda ,  Koichiro Nishimura

    IPC分类号： G11B3/74

    CPC分类号： G11B7/1267 ,  G11B7/0055

    摘要： It is to provide an optical disc recording apparatus and a recording power control method that are adapted to high-speed recording and can set an optimal erasing power with high accuracy. A test writing signal detector reproduces a test writing signal of a predetermined mark length or space length with varied power, and detects the number of error mark signals and an amplitude value of an envelope. A controller obtains a first threshold Pe0 of the erasing power based on the number of error mark signals in a region where laser power is low, and obtains a second threshold Pe1 of the erasing power based on the amplitude value in a region where the laser power is high. Then, the controller sets an optimal value of the erasing power from an average value of the first and second thresholds.

    摘要翻译： 本发明提供适用于高速记录的光盘记录装置和记录功率控制方法，并能够高精度地设定最佳擦除功率。 测试写入信号检测器以变化的功率再现预定标记长度或空格长度的测试写入信号，并且检测错误标记信号的数量和信封的振幅值。 控制器基于激光功率低的区域中的误差标记信号的数量获得擦除功率的第一阈值Pe 0，并且基于振幅值获得擦除功率的第二阈值Pe 1，其中， 激光功率高。 然后，控制器根据第一和第二阈值的平均值设置擦除功率的最佳值。

    Optical disc apparatus and information recording method
    57.
    发明申请
    Optical disc apparatus and information recording method 审中-公开
    光盘装置和信息记录方法

    公开(公告)号：US20070121462A1

    公开(公告)日：2007-05-31

    申请号：US11488617

    申请日：2006-07-19

    申请人： Toshiki Ishii ,  Tsuyoshi Toda ,  Tetsuya Fushimi ,  Masashi Imai

    发明人： Toshiki Ishii ,  Tsuyoshi Toda ,  Tetsuya Fushimi ,  Masashi Imai

    IPC分类号： G11B7/0045

    CPC分类号： G11B7/00456 ,  G11B7/1267

    摘要： To provide a technology for improving the recording quality through edge correction of recording pulse in an optical disc apparatus. An optimum recording power of recording pulse is obtained through OPC processing according to a recording strategy with a first pulse timing; recording is performed by use of recording pulse with the optimum recording power; a first edge-shift amount of recording mark is measured from a reproduction signal to perform edge correction of recording pulse to form a second pulse timing of a recording strategy. Subsequently, recording is performed with pulse width variations of recording pulse to measure a second edge-shift amount of recording mark from a reproduction signal; and optimum edge positions of recording pulse are calculated based on the first edge-shift amount and the second edge-shift amount.

    摘要翻译： 提供通过光盘装置中的记录脉冲的边缘校正来提高记录质量的技术。 通过根据具有第一脉冲定时的记录策略的OPC处理获得记录脉冲的最佳记录功率; 通过使用具有最佳记录功率的记录脉冲进行记录; 从再现信号测量记录标记的第一边缘移位量，以执行记录脉冲的边缘校正，以形成记录策略的第二脉冲定时。 随后，利用记录脉冲的脉冲宽度变化执行记录，以从再现信号测量记录标记的第二边缘移位量; 并且基于第一边缘移位量和第二边缘移位量来计算记录脉冲的最佳边缘位置。

    Optical disk recording method and an optical disk apparatus
    58.
    发明申请
    Optical disk recording method and an optical disk apparatus 失效

    公开(公告)号：US20060280090A1

    公开(公告)日：2006-12-14

    申请号：US11290510

    申请日：2005-12-01

    申请人： Toshiki Ishii ,  Tsuyoshi Toda

    发明人： Toshiki Ishii ,  Tsuyoshi Toda

    IPC分类号： G11B5/09

    CPC分类号： G11B7/126 ,  G11B7/00456 ,  G11B7/0079

    摘要： In a CAV recording of an optical disk, when a plurality of zones are provided, a write strategy is matched for a change in recording linear velocity in the zone so that recording quality can be assured, and recording power is controlled. The write strategy (pulse timing and power ratio) is optimized at the highest recording linear velocity of each zone and the setting of the power in each zone is controlled so that a relation between a recording linear velocity V and a recording power Po satisfies Po=CV (C is a coefficient which is obtained from the relation between Po and V at a zone end point), thereby assuring the reliability of recorded information.