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32 条记录 (耗时 0.018 秒)

    DATA FORMATTING IN DATA STORAGE
    4.
    发明申请
    DATA FORMATTING IN DATA STORAGE 有权
    数据存储中的数据格式

    公开(公告)号：US20090046386A1

    公开(公告)日：2009-02-19

    申请号：US11838498

    申请日：2007-08-14

    申请人： Nigel Ronald Evans ,  Andrew Hana

    发明人： Nigel Ronald Evans ,  Andrew Hana

    IPC分类号： G11B5/09

    CPC分类号： G11B20/1866 ,  G11B20/1207 ,  G11B2220/916

    摘要： A method of processing data comprising arranging data into a data group comprising a plurality of sub groups each said subgroup comprising a plurality of columns; for each column, determining at least one checksum data of said column; and for each column, storing the checksum data of that column within at least one said subgroup of the group, other than the subgroup to which said column belongs.

    摘要翻译： 一种处理数据的方法，包括将数据排列成包括多个子组的数据组，每个所述子组包括多个列; 对于每列，确定所述列的至少一个校验和数据; 并且对于每列，将该列的校验和数据存储在该组的至少一个所述子组中，而不是该列所属的子组。

    Signal-processing circuit, and recording and playback apparatus employing the same
    6.
    发明申请
    Signal-processing circuit, and recording and playback apparatus employing the same 失效
    信号处理电路，以及采用该电路的记录和重放装置

    公开(公告)号：US20020122478A1

    公开(公告)日：2002-09-05

    申请号：US09992606

    申请日：2001-11-14

    发明人： Hisato Hirasaka

    IPC分类号： H03H007/30 ,  H03H007/40

    CPC分类号： G11B20/10425 ,  G11B20/10009 ,  G11B20/10037 ,  G11B20/10046 ,  G11B2220/916

    摘要： A signal-processing circuit in which two-stage equalization is carried out by using first and second equalization circuits provided on the upstream and downstream sides from a phase locked loop circuit, respectively, is provided, wherein the first equalization circuit on the upstream side from the phase locked loop circuit is composed of a transversal filter, to minimize an equalization error caused by the first equalization circuit, thereby stabilizing the operation of the phase locked loop circuit. Another signal-processing circuit including an analog-to-digital converter and a digital phase locked loop circuit for receiving the output from the analog-to-digital converter, and a recording and playback apparatus using the same are also provided, wherein the output from the analog-to-digital converter is input as the digital signal in the digital phase locked loop circuit, to fetch a detection point voltage, thereby stabilizing the operation of the phase locked loop circuit without the need of provision of any analog circuit.

    摘要翻译： 提供了一种信号处理电路，其中分别通过使用分别从锁相环电路设置在上游和下游侧的第一和第二均衡电路来执行两级均衡，其中上游侧的第一均衡电路 锁相环电路由横向滤波器组成，以最小化由第一均衡电路引起的均衡误差，从而稳定锁相环电路的操作。 还提供了包括模数转换器和用于接收来自模数转换器的输出的数字锁相环电路的另一个信号处理电路，以及使用其的记录和重放装置，其中， 模数转换器作为数字锁相环电路中的数字信号输入，以提取检测点电压，从而稳定锁相环电路的运行，而无需提供任何模拟电路。

    Tape drive apparatus
    9.
    发明授权
    Tape drive apparatus 有权
    磁带机装置

    公开(公告)号：US07274526B2

    公开(公告)日：2007-09-25

    申请号：US11184430

    申请日：2005-07-19

    申请人： Robert Morling ,  Russell Ian Monk ,  Peter Arthur Walsh

    发明人： Robert Morling ,  Russell Ian Monk ,  Peter Arthur Walsh

    IPC分类号： G11B15/18 ,  G11B17/00 ,  G11B21/02

    CPC分类号： G11B20/1201 ,  G11B5/0086 ,  G11B20/1209 ,  G11B20/1211 ,  G11B2220/90 ,  G11B2220/913 ,  G11B2220/916

    摘要： A tape drive apparatus has at least one rotary head for reading/writing a track. The track has a number of fragments and each fragment has an identifier. The tape drive apparatus has a position indicator apparatus for providing a signal that indicates a rotational position of the head. The combination of the signal and the identifier unequivocally identifies a fragment within the fragments of a track. This has the advantage that non-unique identifiers can be used for the fragments of a track.

    摘要翻译： 磁带驱动装置具有用于读/写轨道的至少一个旋转头。 轨道具有多个片段，每个片段都有一个标识符。 带驱动装置具有用于提供指示头部的旋转位置的信号的位置指示器装置。 信号和标识符的组合明确地识别轨道的片段内的片段。 这具有非唯一标识符可用于轨道的片段的优点。

    Equalization pre-amble region in digital data storage (DDS) format
    10.
    发明申请
    Equalization pre-amble region in digital data storage (DDS) format 失效
    数字数据存储（DDS）格式的均衡前置码区域

    公开(公告)号：US20010028521A1

    公开(公告)日：2001-10-11

    申请号：US09826810

    申请日：2001-04-06

    申请人： Hewlett-Packard Company

    发明人： Robert Philip Morling ,  Andrew Hana

    IPC分类号： G11B005/09

    CPC分类号： G11B20/10 ,  G11B5/00813 ,  G11B5/0086 ,  G11B5/09 ,  G11B20/1201 ,  G11B2220/916

    摘要： A method of encoding a digital data stream for writing to a digital storage (DDS) format tape data storage medium, comprises writing a byte stream to a preamble region, immediately preceding a user data region, said byte stream having a characteristic of having a power spectrum (900) substantially similar to a power spectrum of said user data region. An automatic gain control circuit (504) responds to the preamble data stream in a substantially similar fashion to its response to the user data stream. The disclosure may overcome a problem in read channels detecting prior art DDS-1 to DDS-4 format preamble regions in that an automatic gain control circuit of the read channel responds differently to a cyclical preamble region in the known DDS formats, compared with its response to user data, giving rise to increased bit error rate in a sequence detector device of the read channel.

    摘要翻译： 一种对数字数据流进行编码以对数字存储（DDS）格式磁带数据存储介质进行编码的方法，包括：在紧接用户数据区之前将字节流写入前导码区域，所述字节流具有功率的特性 频谱（900）基本上类似于所述用户数据区域的功率谱。 自动增益控制电路（504）以与其对用户数据流的响应基本相似的方式对前导码数据流进行响应。 本公开可以克服在检测现有技术DDS-1至DDS-4格式前同步码区域的读取通道中的问题，因为读取信道的自动增益控制电路与已知DDS格式的循环前导码区域的响应不同，与其响应 到用户数据，导致读取通道的序列检测器设备中的比特错误率增加。