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    • 78. 发明公开
    • Synchronizing method and synchronizing apparatus
    • Verfahren undGerätzur同步
    • EP1536428A1
    • 2005-06-01
    • EP04021247.4
    • 2004-09-07
    • Kabushiki Kaisha Toshiba
    • Kojima, Tadashi, c/o Intel. Property DivisionYoshioka, You, c/o Intel. Property Division
    • G11B27/19G11B27/24
    • G11B27/19G11B27/24
    • A WDU is defined as a unit composed of a carrier of N cycles which carrier contains data depending on whether or not modulation is executed. A WPA is defined as a unit composed of a set of M of the WDUs. When the WPAs are consecutively inputted, each WDU and each WPA are detected. Further, an N period counter (R4) and an M period counter (R5) are used to obtain timing control signals for sampling the data. Then, WDU detecting means (R10) obtains a WDU synchronization detection signal PB-WDU indicative of a division point between the WDUs. WPA detecting means obtains a WPA synchronization detection signal PB-SYNC. The WDU synchronization detection signal is used to initialize the N period counter (R4) to a set value. The WPA synchronization detection signal is used to initialize the M period counter (R5) to a set value.
    • WDU被定义为由N个周期的载波组成的单元,载波包含取决于是否执行调制的数据。 WPA被定义为由一组M的WDU组成的单元。 当WPA连续输入时,检测到每个WDU和每个WPA。 此外,使用N周期计数器(R4)和M周期计数器(R5)来获得用于对数据进行采样的定时控制信号。 然后,WDU检测装置(R10)获得表示WDU之间的分割点的WDU同步检测信号PB-WDU。 WPA检测装置获得WPA同步检测信号PB-SYNC。 WDU同步检测信号用于将N周期计数器(R4)初始化为设定值。 WPA同步检测信号用于将M周期计数器(R5)初始化为设定值。
    • 80. 发明公开
    • Method and device for detecting land pre-pits
    • 用于检测定位在岸台预制凹坑的方法和装置
    • EP1477985A1
    • 2004-11-17
    • EP03010790.8
    • 2003-05-14
    • DEUTSCHE THOMSON-BRANDT GMBH
    • Büchler, Christian
    • G11B27/19G11B27/24G11B7/00
    • G11B27/24G11B7/0053G11B7/24082G11B20/1403G11B27/3027G11B2220/216G11B2220/218G11B2220/2562
    • The address information of DVD-R or DVD-RW discs should be identified more accurately. Therefore, the detector is implemented with a sample/hold device (10) for storing a reference value to be used for a sampling window. An optional integrator (13) is used for comparing the integrated signal with a reference value (V1) to decide on the presence of a land pre-pit. The timing for controlling both the sample/hold device (10) and the integrator (13) is derived from a phase locked loop (12) that is locked to the incoming groove wobble signal (Twin) by performing a clock multiplication with a predetermined factor. Advantageously, no band pass filter has to be included, which would need to be tuned according to the variations of the disc speed. Furthermore, the proposed land pre-pit detector is less affected by variations of the input amplitude, as no limiter is used.
    • DVD-R或DVD-RW光盘的地址信息应当确定更精确地设定。 因此,检测器被实现与采样/保持装置(10),用于存储参考值将被用于采样窗口。 一个可选的积分器(13)用于所述积分信号与参考值(V1)进行比较来对一个国家预置坑的存在决定。 用于控制这两个采样/保持装置(10)和所述积分器(13)的定时,从一个锁相环(12)没有被锁定到输入槽摆动信号(双床)通过用一个预定的系数执行时钟乘法衍生 , 有利的是,不带通滤波器必须被包括在内,这将需要被调谐gemäß到盘速度的变化。 进一步,所提出的国家预置坑检测器不易受输入振幅的变化的影响,因为没有限制器被使用。