利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

351 条记录 (耗时 0.039 秒)

    Method and apparatus for determining optical recording power used for recording onto an optical disk
    34.
    发明授权
    Method and apparatus for determining optical recording power used for recording onto an optical disk 失效
    用于确定用于记录到光盘上的光学记录功率的方法和装置

    公开(公告)号：US06614735B2

    公开(公告)日：2003-09-02

    申请号：US09814073

    申请日：2001-03-22

    申请人： Mamoru Shoji ,  Ariaki Ito ,  Takashi Ishida ,  Yukihiro Yamasaki ,  Toshiya Akagi

    发明人： Mamoru Shoji ,  Ariaki Ito ,  Takashi Ishida ,  Yukihiro Yamasaki ,  Toshiya Akagi

    IPC分类号： G11B7125

    CPC分类号： G11B7/126 ,  G11B7/00375 ,  G11B7/00718 ,  G11B27/36 ,  G11B2220/20

    摘要： The invention provides an optical disc device and a method of determining an optimal laser power for data recording by trial recording before recording actual user data even when there are fingerprints in the test track area for the trial recording. The BER (Byte Error Rate) is detected in each recorded sector. If the BER is less than a particular threshold value, the sector is taken as OK (good). Otherwise the sector is taken as NG (no good). While the peak power level is gradually changed or decreased from the power level at which half or more of the plural reproduced sectors are OK, a boundary peak power at which half or more of the sectors become NG is found. Based on the found boundary power, an amount of the optimal peak power is determined.

    摘要翻译： 本发明提供了一种光盘装置和方法，即使在用于试验记录的测试轨迹区域中存在指纹时，也可以在记录实际用户数据之前通过试验记录确定用于数据记录的最佳激光功率。 在每个记录扇区中检测到BER（字节错误率）。 如果BER小于特定阈值，则扇区被视为OK（良好）。 否则，该部门被视为NG（不好）。 当峰值功率电平从多个再现扇区的一半以上的功率电平逐渐变化或减小时，发现半个以上的扇区变为NG的边界峰值功率。 基于找到的边界功率，确定最佳峰值功率的量。

    Tilt detection device, optical disc device, and tilt control method
    35.
    发明授权
    Tilt detection device, optical disc device, and tilt control method 有权
    倾斜检测装置，光盘装置和倾斜控制方法

    公开(公告)号：US06549493B1

    公开(公告)日：2003-04-15

    申请号：US09352203

    申请日：1999-07-13

    申请人： Atsushi Nakamura ,  Mamoru Shoji ,  Takashi Ishida

    发明人： Atsushi Nakamura ,  Mamoru Shoji ,  Takashi Ishida

    IPC分类号： G11B709

    CPC分类号： G11B7/24085 ,  G11B7/00718 ,  G11B7/00745 ,  G11B7/0901 ,  G11B7/0938 ,  G11B7/094 ,  G11B7/0943 ,  G11B7/0956

    摘要： A tilt detection device detects an inclination (tilt angle) of the recording surface of an optical disc with respect to the optical axis of the light beam. The device has an optical head for directing a light beam onto the optical disc, a photo detector for receiving light reflected from the optical disc, and a tilt detector for detecting inclination of the recording surface of the optical disc with respect to the optical axis of the light beam by a signal output from the photo detector.

    摘要翻译： 倾斜检测装置检测光盘的记录面相对于光束的光轴的倾斜（倾斜角）。 该装置具有用于将光束引导到光盘上的光学头，用于接收从光盘反射的光的光电检测器和用于检测光盘的记录表面相对于光盘的光轴的倾斜度的倾斜检测器 光束通过从光电检测器输出的信号。

    Data recording medium and data recording/reproducing apparatus for providing optimum position of mark start and end parts
    36.
    发明授权
    Data recording medium and data recording/reproducing apparatus for providing optimum position of mark start and end parts 有权
    用于提供标记开始和结束部分的最佳位置的数据记录介质和数据记录/再现装置

    公开(公告)号：US06181654B2

    公开(公告)日：2001-01-30

    申请号：US09379738

    申请日：1999-08-24

    申请人： Mamoru Shoji ,  Takashi Ishida ,  Atsushi Nakamura

    发明人： Mamoru Shoji ,  Takashi Ishida ,  Atsushi Nakamura

    IPC分类号： G11B70045

    CPC分类号： G11B7/00456 ,  G11B7/0045 ,  G11B7/00454 ,  G11B7/006 ,  G11B7/0062 ,  G11B7/007 ,  G11B7/00736 ,  G11B7/126 ,  G11B7/24085 ,  G11B7/261 ,  G11B20/10194 ,  G11B20/10212 ,  G11B20/1217

    摘要： An optical disc has a plurality of tracks for recording information represented as marks and spaces between the marks. The marks are formed by an optical beam modulated by a plurality of drive pulses where a number of the drive pulses is determined according to a length of a mark part in the original signal to be recorded to the track. The optical disc has a data recording area for recording data, and a control information recording area for storing a first pulse position Tu value indicative of rising edge of the first drive pulse for determining a start position of a mark to be recorded, and a last pulse position Td value indicative of falling edge of the last drive pulse for determining an end position of a mark to be recorded.

    摘要翻译： 光盘具有用于记录表示为标记之间的标记和间隔的信息的多个轨道。 标记由通过多个驱动脉冲调制的光束形成，其中根据要记录到轨道的原始信号中的标记部分的长度来确定多个驱动脉冲。 光盘具有用于记录数据的数据记录区域和用于存储表示用于确定要记录的标记的开始位置的第一驱动脉冲的上升沿的第一脉冲位置Tu值的控制信息记录区域和最后一个 指示用于确定要记录的标记的结束位置的最后驱动脉冲的下降沿的脉冲位置Td值。

    Multi-layered information recording medium, recording apparatus, and recording method
    39.
    发明授权
    Multi-layered information recording medium, recording apparatus, and recording method 有权
    多层信息记录介质，记录装置和记录方法

    公开(公告)号：US08121002B2

    公开(公告)日：2012-02-21

    申请号：US12980413

    申请日：2010-12-29

    申请人： Motoshi Ito ,  Takashi Ishida ,  Hiroshi Ueda ,  Yoshikazu Yamamoto ,  Mamoru Shoji

    发明人： Motoshi Ito ,  Takashi Ishida ,  Hiroshi Ueda ,  Yoshikazu Yamamoto ,  Mamoru Shoji

    IPC分类号： G11B7/00

    CPC分类号： G11B7/00736 ,  G11B7/007 ,  G11B7/1267 ,  G11B7/24038 ,  G11B20/1883 ,  G11B2220/20 ,  G11B2220/235

    摘要： A multi-layered information recording medium including a plurality of recording layers, the multi-layered information recording medium comprising: a user data area for recording user data; and a plurality of spare areas including at least one replacement region, wherein when the user data area includes at least one defect region, the at least one replacement region may be used in place of the at least one defect region, wherein a first spare area of the plurality of spare areas is positioned so as to be contiguous to a first user data area of a first recording layer, a second spare area of the plurality of spare areas is positioned so as to be contiguous to a second user data area of a second recording layer, and the first spare area and the second spare area are positioned approximately at the same radial position on the multi-layered information recording medium.

    摘要翻译： 一种包括多个记录层的多层信息记录介质，所述多层信息记录介质包括：用于记录用户数据的用户数据区; 以及包括至少一个替换区域的多个备用区域，其中当所述用户数据区域包括至少一个缺陷区域时，可以使用所述至少一个替换区域来代替所述至少一个缺陷区域，其中第一备用区域 定位成与第一记录层的第一用户数据区域相邻，多个备用区域的第二备用区域被定位成与第一记录层的第二用户数据区域相邻， 第二记录层，第一备用区和第二备用区大致位于多层信息记录介质上的相同径向位置。

    Optical disc including a learning area having first and second regions, and methods for reproducing and recording data on the optical disc
    40.
    发明授权
    Optical disc including a learning area having first and second regions, and methods for reproducing and recording data on the optical disc 有权
    包括具有第一和第二区域的学习区域的光盘以及用于在光盘上再现和记录数据的方法

    公开(公告)号：US07920459B2

    公开(公告)日：2011-04-05

    申请号：US12335106

    申请日：2008-12-15

    申请人： Atsushi Nakamura ,  Mamoru Shoji ,  Takashi Ishida

    发明人： Atsushi Nakamura ,  Mamoru Shoji ,  Takashi Ishida

    IPC分类号： G11B7/24

    CPC分类号： G11B7/00745 ,  G11B7/00454 ,  G11B7/0901 ,  G11B7/0908 ,  G11B7/0956 ,  G11B7/126 ,  G11B7/1267 ,  G11B2007/0013

    摘要： When recording or reading an optical disc having plural data recording layers, which data recording layer the light spot is focused on is detected to improve playback signal quality and signals written to the layer on which the light spot is focused are read more reliably. A convergent lens converges the laser beam on the optical disc, and a focus controller controls the focal point of the laser beam on the data layer. A tracking controller positions and tracks the focal point of the laser beam converged by the convergent lens on a track of the optical disc. A photodetector detects the reflected laser beam from the disc. A convergence detector then detects the convergence state of the laser beam emitted to the plural data recording layers. Based on output from the convergence detector, the laser driver is controlled to separately set beam power appropriately for each of the plural data layers of the disc during playback.

    摘要翻译： 当记录或读取具有多个数据记录层的光盘时，检测到该光斑聚焦的哪个数据记录层以提高重放信号质量，并且更可靠地读取写入到其上聚焦光点的层的信号。 会聚透镜将激光束会聚在光盘上，并且聚焦控制器控制激光束在数据层上的焦点。 跟踪控制器将由会聚透镜会聚的激光束的焦点位置并跟踪在光盘的轨道上。 光电检测器检测来自盘的反射激光束。 然后，会聚检测器检测发射到多个数据记录层的激光束的会聚状态。 基于会聚检测器的输出，激光驱动器被控制为在回放期间对盘的多个数据层中的每一个分别设置光束功率。