利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

2 条记录 (耗时 0.012 秒)

    Optical information recording/reproducing device and method for recording/reproducing information
    1.
    发明公开
    Optical information recording/reproducing device and method for recording/reproducing information 失效
    的装置和方法的光学记录和再现信息

    公开(公告)号：EP0801382A2

    公开(公告)日：1997-10-15

    申请号：EP97106002.5

    申请日：1997-04-11

    申请人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.

    发明人： Miyagawa, Naoyasu ,  Furumiya, Shigeru ,  Shoji, Mamora ,  Hisakado, Yuji ,  Ishida, Takashi

    IPC分类号： G11B7/00

    CPC分类号： G11B27/3027 ,  G11B7/00718 ,  G11B7/00745 ,  G11B7/013 ,  G11B20/10009 ,  G11B20/1252 ,  G11B27/19 ,  G11B2220/20

    摘要： There is provided an optical information recording/reproducing device for recording, reproducing, or erasing information on an optical information recording medium including information tracks formed on a disk substrate including alternating groove tracks and land tracks each including: a header region for recording identification data representing location information in pre-pits; and a data region for recording user data, the pre-pits being grouped into blocks, the blocks wobbling alternately toward an inner periphery or an outer periphery of the disk substrate along a radius direction from a center line of each information track by a distance which is substantially 1/2 of the information track pitch. The pre-pits are provided along the radius direction at a pitch twice as large as the track pitch. The device includes: an optical system for radiating a light beam as a converged beam spot on an information track; an optical detector including two light receiving portions divided in parallel to the track direction for receiving the light beam reflected from the recording medium; a signal generator for generating a differential signal and an addition signal of output signals respectively output from the light receiving portions; a header region detection circuit for determining whether the converged beam spot is tracing the header region or the data region using the differential signal; and at least one reading circuit for reading the identification data from the differential signal and for reading information recorded in the data region from the addition signal.

    摘要翻译： 用于记录代表识别数据的报头区：有设置在光学信息记录/记录再现设备，再现或擦除到光学信息记录介质，包括形成在包括交替的凹槽轨道和岸台的盘基片的信息轨道中的信息跟踪每个包含 在预制凹坑的位置信息; 和用于记录用户数据的数据区，该预凹陷被分组为块，这些块可替换地朝向到内周或在一距离从每个信息轨道的中心线沿一个半径方向上的盘基片的外周摆动哪 实质上是信息道间距的一半。 在一个间距的两倍一样大轨道间距沿半径方向设置的预凹陷。 该装置包括：用于点上辐射的光束作为会聚光束跟踪信息的光学系统; 到光检测器包括在平行分轨道方向，用于接收所述光束的两个光接收部分从记录介质反射的光; 用于生成差分信号，并发送信号相加输出信号的信号发生器分别从光接收部输出; 确定性采矿是否会聚的光束点正在跟踪标题区，或者使用的差分信号的数据区域的首标区域检测电路; 以及用于从所述差分信号读取识别数据和用于读取从所述相加信号记录在数据区域的信息的至少一个读出电路。