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    FORMING DIGITAL DATA FOR MAGNETIC TAPE
    11.
    发明申请
    FORMING DIGITAL DATA FOR MAGNETIC TAPE 审中-公开
    形成磁带的数字数据

    公开(公告)号：WO1988009031A1

    公开(公告)日：1988-11-17

    申请号：PCT/US1988001442

    申请日：1988-05-09

    Applicant: EXABYTE CORPORATION

    Inventor： EXABYTE CORPORATION ,  HINZ, Harry, C. ,  ZOOK, Christopher, P.

    IPC: G11B05/09

    CPC classification number: G11B5/0086 ,  G11B20/1209

    Abstract: Apparatus and method are disclosed for formatting and recording digital information. Recording is effected by discrete stripes on 8 mm magnetic tape using a helical scan arrangement that enables a high recording density and a low error rate. Formatting in the data area of each stripe includes recording of digital information with preamble, data block, and postamble sections. The preamble section provides frequency/phase (98) and location referencing (100), the data block section includes a plurality of physical data blocks each of which are divided into sub-blocks that include synchronizing and identifying information along with data to be recorded, and the postamble section ensures compatibility of physical alignement between the recording heads and magnetic tape.

    BUS INTERFACE
    12.
    发明申请
    BUS INTERFACE 审中-公开
    总线接口

    公开(公告)号：WO1997046934A1

    公开(公告)日：1997-12-11

    申请号：PCT/US1997009562

    申请日：1997-06-04

    Applicant: EXABYTE CORPORATION

    Inventor： EXABYTE CORPORATION ,  HARTUNG, Steven, F. ,  MARASCH, Marek, Joseph ,  FOXWORTHY, Neal ,  BAKEMAN, Jack, S., Jr.

    IPC: G06F01/16

    CPC classification number: G06F13/385

    Abstract: An interface or a Nest (30) fits into a peripheral slot (24) connected to an IDE bus (60) of a host computer. IDE devices, such as magnetic tape drives (40) and hard drives, are not swapable in and out of Nest (30) while the IDE bus (60) is active. The Nest isolates the IDE device from the IDE bus until such time (e.g., initialization of the IDE device) as connection of the IDE device to the IDE bus will not corrupt the IDE bus, after which time the Nest connects the IDE device to the IDE bus while the IDE bus is active. A nest driver (230) is executed for computer systems (200) which tend to establish a permanent inventory of IDE devices upon system boot-up. The nest driver determines whether a Nest is connected to the host; determines whether an IDE device has been inserted in the Nest; and determines when the IDE device in the Nest has been initialized.

    Abstract translation: 接口或嵌套（30）适合连接到主计算机的IDE总线（60）的外围插槽（24）。 当IDE总线（60）处于活动状态时，诸如磁带驱动器（40）和硬盘驱动器之类的IDE设备在Nest（30）中不能互换。 Nest将IDE设备与IDE总线隔离，直到IDE设备与IDE总线的连接时间（例如，IDE设备的初始化）不会损坏IDE总线，此后Nest将IDE设备连接到 IDE总线在IDE总线处于活动状态。 对于计算机系统（200）执行嵌套驱动器（230），其在系统启动时倾向于建立IDE设备的永久库存。 嵌套驱动程序确定Nest是否连接到主机; 确定IDE设备是否已插入到Nest中; 并确定Nest中的IDE设备何时被初始化。

    CARTRIDGE HANDLING SYSTEM WITH MOVING I/O DRIVE
    13.
    发明申请
    CARTRIDGE HANDLING SYSTEM WITH MOVING I/O DRIVE 审中-公开
    具有移动I / O驱动器的磁盘处理系统

    公开(公告)号：WO1997044786A1

    公开(公告)日：1997-11-27

    申请号：PCT/US1997008309

    申请日：1997-05-19

    Applicant: EXABYTE CORPORATION

    Inventor： EXABYTE CORPORATION ,  ELLIS, John, F. ,  HOEKSTRA, Daniel, W. ,  WOODRUFF, Daniel, J.

    IPC: G11B15/68

    CPC classification number: G11B15/683

    Abstract: An automated cartridge handling system or library (20, 20') for storing cartridges (22) of information storage media comprises a cartridge holder (26); a tape drive (30) movably mounted with respect to the cartridge holder; and, a transport system (40) for transporting the tape drive (30) in a drive transport path (42) between an unloaded position and a cartridge loaded position. The cartridges (22) remain stationary in the library while the tape drive is transported between the unloaded position and the cartridge loaded position. The cartridge holder library has a plurality of apertures (70) which receive cartridge holders or spines (80). To retain the cartridge (22) within the spine, each spine has resilient cartridge retaining fingers (100) formed in its interior cavity (90) for engaging a notch (104) on the cartridge. Each spine is provided with stabilization flanges (112) for stabilizing the cartridge. Each spine has asymmetrical orientation flanges (116) so that the cartridge-laden spine can be inserted into the library only in an up-right orientation.

    Abstract translation: 用于存储信息存储介质的盒（22）的自动化盒式磁带处理系统或库（20,20'）包括盒保持器（26）; 相对于盒保持器可移动地安装的磁带驱动器（30）; 以及传送系统（40），用于将驱动传送路径（42）中的带驱动器（30）运送在卸载位置和盒装载位置之间。 当磁带驱动器在卸载位置和盒装载位置之间传送时，盒（22）保持静止在库中。 墨盒支架库具有多个孔（70），其容纳墨盒保持器或刺（80）。 为了将筒（22）保持在脊柱内，每个脊具有形成在其内部空腔（90）中的弹性筒保持指（100），用于接合盒上的凹口（104）。 每个脊都设有用于稳定盒的稳定凸缘（112）。 每个脊柱具有不对称的取向凸缘（116），使得装满筒的脊柱只能以右上方向插入图书馆。

    SKEW CORRECTION IN A MULTI-TRACK TAPE RECORDER/PLAYER
    15.
    发明申请
    SKEW CORRECTION IN A MULTI-TRACK TAPE RECORDER/PLAYER 审中-公开
    多轨录音机/播放机中的SKEW校正

    公开(公告)号：WO1995034887A1

    公开(公告)日：1995-12-21

    申请号：PCT/US1995007444

    申请日：1995-06-08

    Applicant: EXABYTE CORPORATION

    Inventor： EXABYTE CORPORATION ,  AYRES, Mark, R.

    IPC: G11B05/596

    CPC classification number: G11B5/584

    Abstract: In a multi-track magnetic tape recorder/player of the type used for data storage and retrieval, with a drive mechanism (101), a drive controller (102), an interface controller (105), and at least one read head and one write head (103), both being displaceable laterally relative to the direction of tape travel, and a memory to store values representative of those lateral displacements with respect to a reference position, a method for exact positioning of the read head onto previously written data tracks. In the preferred method, the write head is used to record (or erase) a longitudinal stripe along the tape, and the read head is used to find one or more edges of the stripe relative to a reference position. The diplacements used to write the stripes and the diplacements associated with the edges are compared to generate an offset correction factor used for subsequent head positioning.

    Abstract translation: 在用于数据存储和检索的类型的多轨磁带录音机/播放器中，具有驱动机构（101），驱动控制器（102），接口控制器（105）和至少一个读取头和一个读取头 写头（103），两者都可相对于磁带行进方向横向位移;以及存储器，用于存储表示相对于参考位置的这些侧向位移的值，用于将读取头精确地定位在先前写入的数据轨道上的方法 。 在优选的方法中，写入头用于沿着带记录（或擦除）纵向条带，并且读取头用于相对于参考位置找到条带的一个或多个边缘。 用于写入条纹和与边缘相关联的位置的位置被比较以产生用于后续头部定位的偏移校正因子。

    METHOD AND APPARATUS FOR SYNCHRONIZING TIMING SIGNALS FOR HELICAL SCAN RECORDER
    16.
    发明申请
    METHOD AND APPARATUS FOR SYNCHRONIZING TIMING SIGNALS FOR HELICAL SCAN RECORDER 审中-公开
    用于同步呼叫记录仪的时序信号的方法和装置

    公开(公告)号：WO1991007751A1

    公开(公告)日：1991-05-30

    申请号：PCT/US1990006323

    申请日：1990-11-06

    Applicant: EXABYTE CORPORATION

    Inventor： EXABYTE CORPORATION ,  HUGHES, Timothy, C. ,  GEORGIS, Steven, Philip

    IPC: G11B20/12

    CPC classification number: G11B20/1209 ,  G11B20/10 ,  G11B27/10 ,  G11B27/3027 ,  G11B2220/90

    Abstract: Method and apparatus are provided for developing a digital timing signal (HEAD SYNC) indicative of when a head (R1) of a helical scan recorder (30) is positioned over a recorded stripe on magnetic tape (32). The method involves rotating a drum (36) upon which a head (R1) is mounted while the magnetic tape (32) is transported past the drum (36) at a speed greater than the nominal speed at which stripes were recorded on the tape (32). Given the geometry of the system and format of the tape (32), the head (R1) is eventually able to recognize a pattern of digital data. The timing of the recognition of the pattern of digital data is used to determine the precise time, relative to each rotation of the drum (36), that the head (R1) ceases to traverse a stripe and the precise time during each rotation of the drum that the head (R1) begins to traverse a stripe. The determination of the edges of the digital timing signal (HEAD SYNC) is repeated upon every rotation of the drum (36). A servo timing signal (SERVO SYNC) for a servo head (S) (also mounted on the drum (36)) is generated in ninty (90) degree phase relationship to the digital timing signal (HEAD SYNC).

    DUAL CHANNEL HELICAL SCAN RECORDER
    17.
    发明申请
    DUAL CHANNEL HELICAL SCAN RECORDER 审中-公开
    双通道螺旋扫描记录仪

    公开(公告)号：WO1991007744A1

    公开(公告)日：1991-05-30

    申请号：PCT/US1990006321

    申请日：1990-11-09

    Applicant: EXABYTE CORPORATION

    Inventor： EXABYTE CORPORATION ,  ZOOK, Christopher ,  BORDASCH, Robert ,  GEORGIS, Steven, P. ,  ATAI-AZIMI, Alireza ,  PISCIOTTA, Christopher ,  HAUGLAND, Steve, E. ,  HUGHES, Timothy, C.

    IPC: G11B05/09

    CPC classification number: G11B20/1883 ,  G11B5/00865 ,  G11B5/09 ,  G11B20/1209 ,  G11B2020/183 ,  G11B2220/90

    Abstract: A dual channel helical scan recording system (30) includes a rotating drum (36) having sets of heads (W1, W2, R1, R2) mounted on its peripheral surface (56). A set of write heads (W1, W2) is situated on an opposite side of the drum (36) from a set of read heads (R1, R2). The write heads (W1, W2) simultaneously write two adjacent tracks (T1, T2), which are read for verification 180 degrees later by corresponding read heads (R1, R2). The heads (W1, W2, R1, R2) are strategically mounted on the drum (36) with respect to angular and axial placement, and have selected head widths and azimuthal angles. Should a block of data (317) written to tape (32) be determined, during readback, to be a bad block, that bad block is subsequently rewritten on the tape (32) in the course of writing good blocks and amongst other good blocks. The rewritten block is recorded at a row position on the tape which is sufficiently displaced from the row position of a previous writing to avoid media defects occurring on the tape. In addition, a block written by a first write head (W1) and perceived as having been written as a bad block must be written by a second write head (W2) before that block is rewritten a predetermined number of times.

    Abstract translation: 双通道螺旋扫描记录系统（30）包括具有安装在其外周表面（56）上的一组头（W1，W2，R1，R2）的旋转鼓（36）。 一组写头（W1，W2）位于鼓（36）的与一组读头（R1，R2）相反的一侧。 写入头（W1，W2）同时写入两个相邻的磁迹（T1，T2），它们被相应的读取头（R1，R2）180度后读取。 头部（W1，W2，R1，R2）相对于角度和轴向布置策略地安装在滚筒（36）上，并且具有选择的头部宽度和方位角。 如果写入磁带（32）的数据块（317）在回读期间被确定为坏块，那么在编写好的块和其它好的块之间随后在带（32）上重写该坏块 。 重写的块被记录在磁带上的行位置，该位置从先前写入的行位置充分移位，以避免在磁带上发生介质缺陷。 此外，由第一写入头（W1）写入并且被感知为被写入坏块的块必须在该块被重写预定次数之前由第二写入头（W2）写入。

    READING METHOD AND APPARATUS FOR CARTRIDGE LIBRARY
    18.
    发明申请
    READING METHOD AND APPARATUS FOR CARTRIDGE LIBRARY 审中-公开
    阅读方法和装置图书馆

    公开(公告)号：WO1991007731A1

    公开(公告)日：1991-05-30

    申请号：PCT/US1990006349

    申请日：1990-11-07

    Applicant: EXABYTE CORPORATION

    Inventor： EXABYTE CORPORATION ,  YOUNGLOVE, Bruce

    IPC: G06K15/00

    CPC classification number: G11B17/225 ,  G06K17/0012 ,  G07F7/069 ,  G07F11/62 ,  G11B15/6835 ,  G11B27/002

    Abstract: An automated magnetic tape cartridge library system houses a plurality of tape drives (56A-56E) and a plurality of racks (70) wherein magnetic tape cartridges are stored. A cartridge transport assembly (100) serves to retrieve a cartridge from a cartridge cell (826) of a rack (70) and to load the cartridge into a target tape drive (56), and vice versa. The cartridge transport assembly (100) includes a pair of engagement fingers (402A, 402B) which engage a selected cartridge upon contact with the cartridge, and a biased plunger (438). The plunger (438) has a bar code reader (446) internally mounted therein for reading bar code indicia on the cartridges and for detecting tracking indicia (868) provided on projections (866) of the cartridge racks (70). A method for library inventory, necessitated by possible manual removal or insertion of cartridges after opening of a library door (26), is also provided. A library map has stored therein cartridge label bar code values and the precise X, Y, and Z coordinates for each cartridge in the library system.

    ERROR CORRECTION METHOD AND APPARATUS
    19.
    发明申请
    ERROR CORRECTION METHOD AND APPARATUS 审中-公开
    错误校正方法和装置

    公开(公告)号：WO1991007721A1

    公开(公告)日：1991-05-30

    申请号：PCT/US1990006322

    申请日：1990-11-06

    Applicant: EXABYTE CORPORATION

    Inventor： EXABYTE CORPORATION ,  ZOOK, Christopher, P.

    IPC: G06F11/10

    CPC classification number: G11B20/1809

    Abstract: In a method of encoding and decoding informational data for transmission to a storage medium (32), a group G of physical blocks written to the storage medium includes both user data information blocks and auxiliary error correction blocks (70415). Each block (Br,c) included in the group G belongs both to a row r and a column c. Informational data is formatted into preselected bit positions of the user data information blocks. Values for bit positions in the auxiliary error correction blocks (70415) are generated by performing an exclusive OR operation upon values in corresponding bit positions in a subgroup of strategically selected user data blocks. By strategically selecting the user data blocks to be included in the subgroup, the method facilitates recovery of entire blocks, and even rows or columns of blocks.

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