Impulse signal producing device of the pneumatic pressure type
    61.
    发明授权
    Impulse signal producing device of the pneumatic pressure type 失效
    气动压力式脉冲信号发生装置

    公开(公告)号:US3937252A

    公开(公告)日:1976-02-10

    申请号:US528624

    申请日:1974-12-02

    Applicant: Takashi Ishida

    Inventor: Takashi Ishida

    CPC classification number: F15B21/125 F15C3/16 Y10T137/86405 Y10T137/86871

    Abstract: The impulse signal producing device comprises a rotatable sleeve which has several small holes and/or slots, a supply body which is formed with air ejecting openings at positions inside the rotating paths of the small holes and/or slots, and a receiving cover which is formed with output ports at positions corresponding to the air ejecting openings. The slot is extended in the circumferential direction of the rotatable sleeve, and one end of the slot in the rotating direction is arranged on the same generating line of the rotatable sleeve as that including the position of the small hole. Air ejected from the openings passes through the small hole and slot of the rotatable sleeve and flows out of the output ports, to produce output pulses. By varying the length of the slot in the circumferential direction, the pulse width can be varied. By varying the arrangement of the small holes and slots, it is possible to vary the phases of the output pulses or to produce several pulses at the same time.

    Abstract translation: 脉冲信号产生装置包括具有若干小孔和/或槽的可旋转套管,供应主体在小孔和/或狭槽的旋转路径内的位置处形成有喷射口,以及接收罩, 在与喷射口对应的位置形成有输出口。 狭槽在可旋转套筒的圆周方向上延伸,并且槽的一端在旋转方向上布置在与包括小孔的位置相同的可旋转套筒的相同生成线上。 从开口喷射的空气穿过可旋转套筒的小孔和狭槽,并从输出端口流出,以产生输出脉冲。 通过改变槽周向的长度,可以改变脉冲宽度。 通过改变小孔和狭缝的布置,可以改变输出脉冲的相位或者同时产生几个脉冲。

    Multi-layered information recording medium, recording apparatus, and recording method
    66.
    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

    Abstract: 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.

    Abstract translation: 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。

    Wobble information recording method, information recording medium, and recording and reproduction method and apparatus thereof
    67.
    发明授权
    Wobble information recording method, information recording medium, and recording and reproduction method and apparatus thereof 有权
    摆动信息记录方法,信息记录介质及其记录和再现方法及装置

    公开(公告)号:US08036071B2

    公开(公告)日:2011-10-11

    申请号:US12121141

    申请日:2008-05-15

    CPC classification number: G11B7/0053 G11B7/24082 G11B2007/0013

    Abstract: An optical disk and a method for identifying the optical disk making it possible to identify a recording system of the optical disk easily in a short time by a recording and reproduction apparatus when a groove-recording system and a land-recording system are both employed in one kind of optical disk, such as, for example, a BD-R. Specifically, a polarity upon reproducing wobble information is made to be the same in both an optical disk of groove-recording system and the optical disk of a land-recording system. The recording system of the optical disk that shows the same wobble polarity irrespective of the recording system can be easily detected by finding a tracking polarity that can recognize the wobble information by changing the tracking polarity, whereby the start-up time of the recording and reproduction apparatus can be shortened.

    Abstract translation: 一种光盘和一种用于识别光盘的方法,当在槽记录系统和陆地记录系统都被采用时,可以通过记录和再现装置在短时间内容易地识别光盘的记录系统 一种光盘,例如BD-R。 具体来说,在凹槽记录系统的光盘和陆地记录系统的光盘两者中,在摆动信息再现时的极性是相同的。 通过发现通过改变跟踪极性可以识别摆动信息的跟踪极性,可以容易地检测到与记录系统无关地显示相同摆动极性的光盘的记录系统,从而记录和再现的启动时间 装置可以缩短。

    Optical disc including a learning area having first and second regions, and methods for reproducing and recording data on the optical disc
    69.
    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

    Abstract: 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.

    Abstract translation: 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。

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