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    • 1. 发明专利
    • Method and device for amending recess caused on external plate
    • 用于修复外部引起的回波的方法和装置
    • JPS6123523A
    • 1986-02-01
    • JP14224484
    • 1984-07-11
    • Yuko Muramatsu
    • MURAMATSU YUKO
    • B21D1/12B21D1/06
    • B21D1/06
    • PURPOSE:To make a amendment easy by expanding with inserting a bag-shaped rubber pad inside the space of the inside of an external plate and by amending the recess of the outer plate by the expansion force thereof. CONSTITUTION:A bag-like rubber pad 1 which is deflated is inserted into the space 4 of the part where a recess 3 is caused on an external plate 2. The pad 1 has the area to be able to cover the part of the recess 3 and one end of at least one piece of a flexible tube 7 is fitted thereto. The pad 1 is then inflated with letting a compressed air in inside the pad 1 and an amendment is performed with extruding the recess 3 of the external plate 2. The air inside the pad 1 is diacharged after the amendment and the pad 1 is taken out of the space 4. With this method the recess 3 of the external plate cam be amended simply and easily in a short time.
    • 目的:通过在外部板的内部的空间内插入袋状橡胶垫并通过其膨胀力修正外部板的凹部来扩大容易的修改。 构成:将放气的袋状橡胶垫1插入到在外板2上产生凹部3的部分的空间4中。垫1具有能够覆盖凹部3的部分的区域 并且至少一个柔性管7的一端安装在其上。 然后通过在垫1内部放置压缩空气来充填垫1,并且通过挤压外部板2的凹部3进行修正。在修改之后垫1内的空气被排出并且取出垫1 通过该方法,外部板凸轮的凹部3在短时间内简单且容易地被修改。
    • 2. 发明授权
    • Aperture ratio measuring apparatus for optical recording medium with pre-pits
    • 具有预凹坑的光学记录介质的孔径比测量装置
    • US06956802B2
    • 2005-10-18
    • US10079041
    • 2002-02-21
    • Masahiro KatoNaoharu YanagawaTatsuhiro YoneYuko MuramatsuShinji Suzuki
    • Masahiro KatoNaoharu YanagawaTatsuhiro YoneYuko MuramatsuShinji Suzuki
    • G11B7/004G11B7/0037G11B7/005G11B7/26G06F15/00
    • G11B7/268G11B7/00375G11B7/0053
    • An AR measuring apparatus receives the reflection light of an optical beam irradiated on an optical recording medium having a recording surface on which pre-pits are repeatedly formed between tracks by means of a first light receiving surface and a second light receiving surface, obtains a push-pull signal based on the difference between light receiving signals from the first and second light receiving surfaces, collects sample data by sampling the push-pull signals for a predetermined period of time, repeats the sampling for the predetermined period of time by a plurality of times, determines whether or not each data value corresponding to a pre-pit position of the sample data by the plurality of times is obtained by a predetermined number of times or greater, and when data values obtained by the predetermined number of times or greater are determined, calculates as an aperture ratio, a ratio between the minimum value and the maximum value of values corresponding to a pre-pit component of the data values obtained by the predetermined number of times or greater.
    • AR测量装置接收照射在具有通过第一光接收表面和第二光接收表面在轨道之间重复形成预凹坑的记录表面的光记录介质上的光束的反射光,获得推 基于来自第一和第二光接收表面的光接收信号之间的差的脉冲信号通过在预定时间段内对推挽信号进行采样来收集采样数据,通过多个 多次确定与样本数据的预凹坑位置相对应的多个数据值是否被获得预定次数以上,并且当通过预定次数以上获得的数据值为 作为孔径比,计算最小值和对应于前置凹坑部件的值的最大值之间的比率 t的预定次数或更大的数据值。