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    • 1. 发明公开
    • DEVICE AND METHOD FOR WRITING DATA IN TAPE MEDIA
    • VORRICHTUNG UND VERFAHREN ZUM SCHREIBEN VON DATEN AUF BANDMEDIEN
    • EP2328144A1
    • 2011-06-01
    • EP09804852.3
    • 2009-07-15
    • International Business Machines Corporation
    • OISHI YutakaNAKAMURA KenjiMASUDA Setsuko
    • G11B5/008
    • G11B5/00813G11B5/4893G11B20/10009G11B2020/10898G11B2220/93
    • The invention of a tape drive and a method are provided, which prevent such a defect that old data is not completely overwritten with new data and the new data cannot be properly read. Referring to Fig. 6 , in a controller 16 of a tape drive, a command processing unit 41 receives a request to write new data, an offset determination unit 44 determines whether old data is not partially overwritten with new data, and if old data is not partially overwritten with new data, a head position management unit 45 makes a write head offset toward the unoverwritten portion. Then, a channel input/output unit 43 reads pattern data that disables old data from a pattern storage unit 47 and outputs the data to the write head to thereby overwrite the old data with the pattern data. After that, a tape transport management unit 46 rewinds a tape and the head position management unit 45 returns the write head to the original position to overwrite the old data with the new data as usual.
    • 提供了一种磁带驱动器和方法的发明,其防止旧数据不被新数据完全覆盖的缺陷,并且新数据不能被正确读取。 参见图 如图6所示,在磁带驱动器的控制器16中,命令处理单元41接收写入新数据的请求,偏移确定单元44确定旧数据是否未被新数据重写,并且如果旧数据未被部分重写, 新数据,头位置管理单元45使写头偏移朝向未重写部分。 然后,通道输入/输出单元43读取从模式存储单元47禁用旧数据的模式数据,并将数据输出到写入头,从而用模式数据覆盖旧数据。 之后,磁带传送管理单元46重绕磁带,并且磁头位置管理单元45将写入头返回到原始位置,以照旧的方式用新数据覆盖旧数据。
    • 3. 发明公开
    • Variable width flat magnetic-tape head for bi-directional contact recording and method for making the same
    • Flachmagnetbandkopf mit variabler Breitefürbi-direktionale Aufnahme und Verfahren dieses herzustellen
    • EP1359577A2
    • 2003-11-05
    • EP03252370.6
    • 2003-04-14
    • QUANTUM CORPORATION
    • Kaiser, Donna JeanKennedy, James
    • G11B15/62
    • G11B5/4893G11B15/64
    • A variable width flat tape head for bi-directional contact recording and method for making the same has significant advantages over both traditional contoured tape heads and single width flat heads for contact recording applications. The variable width head and process disclosed herein allows for greater ease of manufacturing, efficient layout of the devices on thin film wafers and provides a significant cost reduction in the production of the head compared to traditionally contoured tape heads. In addition, the present invention reduces unnecessary surface area where the tape contacts the head, thus reducing tape wear and damage that is present in single width flat heads (where the tape is in contact uniformly across the tape width), thereby providing a concomitant improvement in tape wear and life. In addition, the head of the present invention is simpler and less costly to manufacture than comparable devices with distinct advantages to the magnetoresistive ("MR") read element stripe height control process, device alignment and assembly processes particularly with respect to traditionally contoured tape heads, which require more complex and expensive manufacturing operations to form the tape head profile.
    • 用于双向接触记录的可变宽度扁平带头及其制造方法相对于传统轮廓带头和用于接触记录应用的单宽扁平头具有显着优点。 这里公开的可变宽度头部和工艺允许更大的制造容易性,薄膜晶片上的器件的有效布局,并且与传统的轮廓带头相比提供了头部生产的显着成本降低。 此外,本发明减少了磁带与磁头接触的不必要的表面积,从而减少了单宽平头(磁带在磁带宽度上均匀地接触)中存在的磁带磨损和损坏,从而提供了同时的改进 在磁带磨损和寿命。 此外,本发明的头部与具有与磁阻(“MR”)读取元件条纹高度控制过程,装置对准和组装过程相比具有明显优点的可比设备更简单且成本更低,特别是相对于传统的轮廓带头 ,其需要更复杂和昂贵的制造操作以形成磁带头轮廓。
    • 5. 发明公开
    • Alignment of tape head
    • Bandkopfausrichtung
    • EP1204096A2
    • 2002-05-08
    • EP01308762.2
    • 2001-10-15
    • Hewlett-Packard Company
    • Beck, Patricia A.Clifford, George M. Jr.
    • G11B5/48G11B5/56G11B5/584
    • G11B5/4893G11B5/00826G11B5/56G11B5/584
    • A device for precision alignment of a write element (41) of a tape head (10) to a transport direction T of a media (20) that is transported across the tape head (10) is disclosed. The tape head (10) includes at least one alignment element (31) that is cofabricated with the write element (41) so that both the write element (41) and the alignment element (31) have a fixed orientation with respect to a magnetic axis M of the tape head (10). The alignment element (31) and the write element (41) can be fabricated on the tape head (10) using standard microelectronic photolithographic processes. Preferably, the tape head (10) includes a plurality of alignment elements (31). Those alignment elements (31) are operative to write alignment transitions (33) onto the media (20). The alignment transitions (33) can be observed to determine if they are indicative of the write element (41) having a predetermined orientation β with respect to the transport direction T. A read transducer (60) can be used to generate signals (S 1 , S 2 ) from the alignment transitions (33) and those signals (S 1 , S 2 ) can be analyzed to determine if the predetermined orientation β of the write element (41) has been achieved. The tape head (10) can include horizontal and/or vertical elements (61, 71) for a gross visual alignment of the tape head (10) to the media (20). The alignment transitions (33) can be read by a data element (81) of a separate data head (70). A signal from the data element (S 1 , S 2 ) can be used to adjust the azimuth ψ of the data head (70) with respect to a direction of transport T. In servo writer applications where servo code is prerecorded on the media, the alignment transitions (33) can be used to align the write elements of a servo write head to the transport direction of the media so that inter band skew between adjacent servo bands is significantly reduced.
    • 公开了一种用于将磁带头(10)的写入元件(41)与跨磁带头(10)传输的介质(20)的输送方向T精确对准的装置。 带头(10)包括与写入元件(41)共同组成的至少一个对准元件(31),使得写入元件(41)和对准元件(31)相对于磁性元件 磁带头(10)的轴线M。 可以使用标准的微电子光刻工艺在带头(10)上制造对准元件(31)和写元件(41)。 优选地,带头(10)包括多个对准元件(31)。 这些对准元件(31)可操作以将对准转变(33)写入到介质(20)上。 可以观察对准转换(33)以确定它们是否表示相对于传送方向T具有预定取向β的写入元件(41)。读取换能器(60)可用于产生信号(S1, S2),并且可以分析那些信号(S1,S2)以确定是否已经实现了写入元件(41)的预定取向β。 带头(10)可以包括水平和/或垂直元件(61,71),用于磁带头(10)与介质(20)的总视觉对准。 对准转换(33)可由单独数据头(70)的数据元素(81)读取。 来自数据元素(S1,S2)的信号可以用于相对于传送方向T调整数据头(70)的方位角psi。在伺服编码器应用中,伺服码被预先记录在介质上,对准 可以使用转换(33)来将伺服写入头的写入元件与介质的传送方向对准,使得相邻伺服带之间的带间偏移显着减小。