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    • 6. 发明授权
    • Pre-block ID mark for multi-directional block location when using a unidirectional coding format
    • 使用单向编码格式时,可以使用多方向块位置的Pre-Block ID标记
    • US06947241B1
    • 2005-09-20
    • US10213945
    • 2002-08-07
    • Richard Allen GillRoger D. HayesKeith Gary Boyer
    • Richard Allen GillRoger D. HayesKeith Gary Boyer
    • G11B5/584G11B19/02
    • G11B5/584
    • An asynchronous method for locating individual blocks of data in a tape drive, without having to read the blocks of data is provided. The invention comprises placing an ID mark adjacent to the data blocks and inter-block gaps on the tape. The ID mark contains a small amount of information about the next respective data block on the tape. The ID mark is encoded such that the same detection mechanism that detects the inter-block gap can also retrieve the ID mark information, without having to process the entire block of data associated with a particular ID mark. The ID mark is symmetrical such that it can be detected and decoded in the forward and backward direction, allowing the tape drive to find a desired block of data by searching either forward or backward, even when the magnetic tape uses a unidirectional data format.
    • 提供了一种用于在磁带驱动器中定位各个数据块的异步方法,而不必读取数据块。 本发明包括将ID标记与数据块相邻并且在块上设置块间隙。 ID标记包含关于磁带上下一个相应数据块的少量信息。 ID标记被编码,使得检测块间间隙的相同检测机制也可以检索ID标记信息,而不必处理与特定ID标记相关联的整个数据块。 ID标记是对称的,使得其可以在向前和向后方向上被检测和解码,从而允许磁带驱动器通过向前或向后搜索来寻找期望的数据块,即使当磁带使用单向数据格式时。
    • 7. 发明授权
    • System and method for recovery from writing errors during data storage
    • 在数据存储期间从写入错误中恢复的系统和方法
    • US06898036B2
    • 2005-05-24
    • US10044773
    • 2001-12-31
    • Richard Allen GillKeith Gary BoyerSteven Gregory Trabert
    • Richard Allen GillKeith Gary BoyerSteven Gregory Trabert
    • G11B5/584G11B5/09G11B27/36
    • G11B5/584
    • A system and method for recovering from write errors during writing of a moving storage medium suspend write current while allowing the storage medium to continue moving. The system and method continue to format data for writing while the write current is suspended and resequence the data for subsequent storage. Information is recorded to distinguish previously written data from current data with error correction pointers adjusted accordingly. Write errors may be detected in a track following streaming tape system based on data errors from a read back check or based on positioning errors of a read/write head servo system, for example. By allowing the storage medium to continue moving through the error event, the system and method improve speed, capacity utilization, and throughput of the storage and retrieval process.
    • 一种用于在写入移动存储介质期间从写入错误中恢复的系统和方法暂停写入电流,同时允许存储介质继续移动。 当写入电流被暂停时,系统和方法继续格式化写入数据,并重新排列数据以供后续存储。 记录信息以将先前写入的数据与当前数据区分开,并相应地调整误差校正指针。 例如,可以基于来自回读检查的数据错误或基于读/写头伺服系统的定位误差的流式磁带系统之后的轨道中检测到写入错误。 通过允许存储介质继续移动通过错误事件,系统和方法提高了存储和检索过程的速度,容量利用率和吞吐量。
    • 8. 发明授权
    • Method for recovering data in a tape drive system
    • 在磁带机系统中恢复数据的方法
    • US07810008B2
    • 2010-10-05
    • US11440682
    • 2006-05-24
    • Richard Allen GillHoward H. Rather
    • Richard Allen GillHoward H. Rather
    • G06F11/30
    • G11B20/18G11B2020/183G11B2020/1836G11B2220/90G11C2029/0411
    • A method is disclosed. The method includes performing a first read operation at a tape drive, determining if a minimum number of data bytes have been recovered in the first read operation to perform error correcting codes (ECC), performing a second read operation if the minimum number of data bytes to perform ECC have not been recovered, determining if a minimum number of data bytes have been recovered in the second read operation to perform ECC, combining the recovered data bytes from the first read operation and the second read operation to form combined recovered data bytes, determining if a minimum number of data bytes are included in the combined recovered data bytes to perform ECC and performing ECC if the minimum number of data bytes are included in the combined recovered data bytes.
    • 公开了一种方法。 该方法包括在磁带驱动器处执行第一读取操作,确定在第一读取操作中是否已经恢复了最小数量的数据字节以执行纠错码(ECC),如果最小数量的数据字节数 执行ECC尚未恢复,确定在第二读取操作中是否已经恢复了最小数量的数据字节以执行ECC,将来自第一读取操作和第二读取操作的恢复数据字节组合以形成组合的恢复数据字节, 确定组合的恢复数据字节中是否包括最小数量的数据字节以执行ECC,并且如果最小数量的数据字节包括在组合的恢复数据字节中,则执行ECC。
    • 9. 发明授权
    • Mechanism for minimizing unload times in a tape drive system
    • 减少磁带机系统卸载时间的机制
    • US07372657B2
    • 2008-05-13
    • US11440599
    • 2006-05-24
    • Richard Allen GillBradley E. Whitney
    • Richard Allen GillBradley E. Whitney
    • G11B15/48
    • G11B15/467
    • In one embodiment, a method and apparatus for minimizing unload times in a tape drive system is disclosed. The method includes: writing to a tape in serpentine format; reaching a comparison point on the tape, wherein at the comparison point an actual capacity is compared to an expected capacity; utilizing the comparison at the comparison point to estimate a distance from the comparison point until a guaranteed capacity for the tape is reached; and determining a turn-around point on the tape based on the estimated distance, wherein at the turn-around point a tape drive writing to the tape to stop writing in a first direction and then continue writing in a second direction opposite from the first direction and towards a physical beginning of the tape. Other embodiments are also disclosed.
    • 在一个实施例中,公开了一种用于最小化磁带驱动系统中的卸载时间的方法和装置。 该方法包括:以蛇形格式写入磁带; 达到磁带上的比较点,其中在比较点将实际容量与预期容量进行比较; 利用比较点的比较来估计距离比较点的距离,直到达到带的保证容量; 以及基于估计的距离确定磁带上的转折点,其中在转向点处,磁带驱动器写入磁带以停止在第一方向上的写入,然后在与第一方向相反的第二方向上继续写入 并朝着磁带的物理开始。 还公开了其他实施例。