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    Detector, reproduction system, receiver and method
    2.
    发明授权
    Detector, reproduction system, receiver and method 失效
    检测器，再现系统，接收器和方法

    公开(公告)号：US06731699B2

    公开(公告)日：2004-05-04

    申请号：US09860308

    申请日：2001-05-18

    申请人： Charalampos Pozidis ,  Willem Marie Julia Marcel Coene ,  Johannes Wilhelmus Maria Bergmans

    发明人： Charalampos Pozidis ,  Willem Marie Julia Marcel Coene ,  Johannes Wilhelmus Maria Bergmans

    IPC分类号： H04L2706

    CPC分类号： H03M13/39 ,  G11B20/10009 ,  G11B20/1426 ,  G11B2020/1453

    摘要： A detector (30) is described for detecting a digital signal (Bio) out of an input information signal (Ai) which represents a runlength limited sequence, the runlength having a minimal value m. The detector (30) generates (60, 62) a preliminary binary signal (Bi) out of the input information signal (Ai). A composed sequence of subsequent bits is identified (86) within the preliminary binary signal (Bi) which subsequently includes at least a first neighboring bit of a run of length greater or equal than m+1, one or more further runs of length m and at least a second neighboring bit of a run of length greater or equal than intl. A set of sequences are generated (84, 86). These sequences can be obtained from said composed sequence by changing polarities of binary values within the composed sequence without violating the runlength constraint. The set includes the composed sequence obtained from the preliminary binary signal. A path metric (D) is calculated (94, 96) for two or more sequences of the set, said path metric (D) being the sum of the branch metrics (d) for the path through the trellis corresponding to the sequence of binary values. The sequence from the set which has the highest likelihood of corresponding to the input sequence represented by the input information signal (Ai) is identified (86, 98, 100) on the basis of the path metric.

    摘要翻译： 描述了一种检测器（30），用于检测表示游程受限序列的输入信息信号（Ai）中的数字信号（Bio），该游程长度具有最小值m。 检测器（30）从输入信息信号（Ai）中产生（60,62）初步二进制信号（Bi）。 在初始二进制信号（Bi）内识别（86）的后续比特的组合序列，其随后包括长度大于或等于m + 1的游程的至少第一相邻比特，长度为m的一个或多个另外的游程， 长度大于或等于intl的游程的至少第二相邻位。 生成一组序列（84,86）。 可以通过改变组合序列内的二进制值的极性而不违反游程长度约束从所述组合序列获得这些序列。 该集合包括从初步二进制信号获得的合成序列。 对于集合的两个或多个序列计算路径度量（D）（94,96），所述路径度量（D）是通过与二进制序列对应的网格的路径的分支度量（d）之和， 价值观。 基于路径度量来识别具有与由输入信息信号（Ai）表示的输入序列相对应的最高似然度的集合的序列（86,98,100）。

    Storage device and operating method therefor
    7.
    发明授权
    Storage device and operating method therefor 失效
    存储设备及其操作方法

    公开(公告)号：US08089833B2

    公开(公告)日：2012-01-03

    申请号：US11506229

    申请日：2006-08-18

    申请人： Giovanni Cherubini ,  Evangelos S. Eleftheriou ,  Charalampos Pozidis

    发明人： Giovanni Cherubini ,  Evangelos S. Eleftheriou ,  Charalampos Pozidis

    IPC分类号： G11B7/00

    CPC分类号： G11B9/1454 ,  B82Y10/00 ,  G11B11/007 ,  G11B2005/0021

    摘要： A storage device including a storage medium for storing data in the form of marks in multiple tracks aligned along track center lines, at least one read transducer for writing and reading said data stored in said storage medium, and an actuator for moving said storage medium relative to said at least one read transducer. The storage device further includes stored servo sequences, which are replicated by use of at least two different types of servo marks displaced by a given unique distance in a cross track direction relative to a respective track centerline, wherein the storage device is operable to retrieve servo sequences using read-back signals obtained from at least two different types of servo marks.

    摘要翻译： 一种存储装置，包括存储介质，用于以沿轨道中心线对准的多个轨道中的标记形式存储数据;至少一个读取换能器，用于写入和读取存储在所述存储介质中的所述数据;以及致动器，用于移动所述存储介质相对 到所述至少一个读取换能器。 存储装置还包括存储的伺服序列，其通过使用相对于相应轨道中心线在交叉轨道方向上移位给给定唯一距离的至少两种不同类型的伺服标记来复制，其中存储装置可操作以检索伺服 使用从至少两种不同类型的伺服标记获得的读回信号的序列。