Methods and apparatus for storing data and auxiliary information
    1.
    发明授权
    Methods and apparatus for storing data and auxiliary information 有权
    用于存储数据和辅助信息的方法和装置

    公开(公告)号:US06229659B1

    公开(公告)日:2001-05-08

    申请号:US08532776

    申请日:1998-09-09

    IPC分类号: G11B509

    摘要: Data are stored on magnetic tape along successive tracks extending obliquely across the tape, in each of several areas including a lead-in area, a data area and an end-of-data (EOD) area. Each track comprises successive blocks or fragments of data, and each fragment has a compact header containing a synchronization byte, six information bytes and two parity bytes. The information bytes include a fragment ID, an area ID sub code identifying the area in which the fragment is located, and various other sub codes relating to logical structure of the data. The inclusion of an area ID sub code and logical structure sub codes in the (compact) header of every fragment facilitates reliable searching of the data stored on the tape at high tape advance speeds.

    摘要翻译: 数据沿着包括导入区域,数据区域和数据结束(EOD))区域的多个区域中的每一个中沿着磁带倾斜延伸的连续轨道存储在磁带上。 每个轨道包括连续的块或数据片段,并且每个片段具有包含同步字节,六个信息字节和两个奇偶校验字节的紧凑标题。 信息字节包括片段ID,识别片段所在区域的区域ID子代码以及与数据的逻辑结构有关的各种其他子代码。 在每个片段的(紧凑)头部中包括区域ID子代码和逻辑结构子代码便于以高带速提前速度可靠地搜索存储在磁带上的数据。

    Data storage method and apparatus with adaptive buffer threshold control
based upon buffer's waiting time and filling degree of previous data
transfer
    2.
    发明授权
    Data storage method and apparatus with adaptive buffer threshold control based upon buffer's waiting time and filling degree of previous data transfer 失效
    基于缓冲器的等待时间和先前数据传输的填充程度的具有自适应缓冲器阈值控制的数据存储方法和装置

    公开(公告)号:US5412780A

    公开(公告)日:1995-05-02

    申请号:US873426

    申请日:1992-04-27

    申请人: Nigel Rushton

    发明人: Nigel Rushton

    IPC分类号: G06F3/06 G11B15/02 G06F13/00

    CPC分类号: G06F3/0601 G06F2003/0691

    摘要: A data storage device for reading and/or writing data to a storage medium includes a buffer memory (15) for smoothing the flow of data to/from the storage medium. Activation of the storage apparatus (9) to read/write data from/to the storage medium is generally controlled in dependence upon the amount of data held in the buffer (13). In order to optimize utilization of the buffer (15), it is proposed to adaptively set the threshold level at which such activation is effected. To this end, the utilization of the buffer (13) during a previous activation is monitored and a new threshold value is set in dependence on the monitored utilization parameter.

    摘要翻译: 用于向存储介质读取和/或写入数据的数据存储装置包括缓冲存储器(15),用于平滑与存储介质之间的数据流。 通常根据保存在缓冲器(13)中的数据量来控制从存储介质读/写数据的存储装置(9)的激活。 为了优化缓冲器(15)的利用率,建议自适应地设置实现这种激活的阈值水平。 为此,监视先前激活期间缓冲器(13)的利用率,并根据所监视的利用参数来设置新的阈值。

    Data transfer device and method
    3.
    发明申请
    Data transfer device and method 审中-公开
    数据传输装置及方法

    公开(公告)号:US20050201015A1

    公开(公告)日:2005-09-15

    申请号:US11123047

    申请日:2005-05-06

    摘要: A data transfer device adapted to transfer data from a data storage medium having at least one data storage element the data transfer device comprising a head block having first and second transfer elements. The first and second transfer elements arranged such that, when, in use, the data storage medium moves past the first and second transfer elements said at least one data storage element is aligned with both of said first and second data transfer elements. The first data transfer element is arranged to read data from a portion of said at least one data storage element at a different time to the second data transfer element being arranged to read data from said portion of said at least one data storage element.

    摘要翻译: 一种数据传输装置,适于从具有至少一个数据存储元件的数据存储介质传送数据,所述数据传输装置包括具有第一和第二传送元件的头块。 第一和第二传送元件布置成使得当使用中数据存储介质移动经过第一和第二传送元件时,所述至少一个数据存储元件与所述第一和第二数据传送元件两者对准。 第一数据传送元件被布置成在不同的时间从所述至少一个数据存储元件的一部分读取数据,以将第二数据传送元件布置成从所述至少一个数据存储元件的所述部分读取数据。