-
公开(公告)号：US5339202A
公开(公告)日：1994-08-16
申请号：US37285
申请日：1993-03-26
申请人： John E. Heinz , Michael E. Hamerly , Richard W. Molstad , Theodore A. Schwarz , Robert J. Youngquist
发明人： John E. Heinz , Michael E. Hamerly , Richard W. Molstad , Theodore A. Schwarz , Robert J. Youngquist
CPC分类号： G11B20/10194 , G11B5/035 , G11B5/09
摘要： An adjustable write-equalized recording circuit for recording data onto a magnetic tape. The circuit variably adjusts the amplitude of write-equalization pulses relative to the data waveform by an amount that can be either preset or determined during operation.
摘要翻译： 一种用于将数据记录到磁带上的可调写入均衡记录电路。 电路可以相对于数据波形可变地调整写入均衡脉冲的幅度，其量可以在操作期间预先设定或确定。
-
2.发明授权Encoded servo track configurations, servo writer and systems/method regarding same 失效编码伺服磁道配置，伺服写入器和系统/方法相同
公开(公告)号：US6134070A
公开(公告)日：2000-10-17
申请号：US861664
申请日：1997-05-22
申请人： Hung T. Tran , Theodore A. Schwarz , Robert J. Youngquist , Alan R. Olson , Richard W. Molstad , Gary D. Moeller , Richard E. Jewett , Christopher L. Hill
发明人： Hung T. Tran , Theodore A. Schwarz , Robert J. Youngquist , Alan R. Olson , Richard W. Molstad , Gary D. Moeller , Richard E. Jewett , Christopher L. Hill
IPC分类号： G11B5/31 , G11B5/008 , G11B5/265 , G11B5/48 , G11B5/55 , G11B5/584 , G11B21/08 , G11B21/10 , G11B21/02
CPC分类号： G11B5/4893 , G11B21/086 , G11B21/103 , G11B5/5504 , G11B5/584 , G11B5/5508
摘要： A servo track recording tape includes a plurality of data tracks and a servo band dedicated for servo information. The servo band includes substantially uniformly written servo carrier information across a predetermined servo carrier width along the length of the tape with at least one encoded track pitch defined therein. Each encoded track pitch has alternating erased and non-erased portions along the length of the tape for defining servo tracks. The alternating erased and non-erased portions of the at least one encoded track pitch include encoded information provided by varying the length of one or more of the erased portions. The encoded information may be representative of tape locations along the length of the tape. The servo band may include two or more encoded track pitches defined in the substantially uniformly written servo carrier information with each encoded track pitch defining corresponding servo tracks. The alternating erased and non-erased portions of each of the two or more encoded track pitches may include encoded information uniquely identifying the corresponding servo tracks. Another servo tracking data recording tape includes a servo band including at least one single frequency servo track written in an erased width of the servo band along the length of the tape. The single frequency servo track includes encoded blocks of information along the length of the tape representative of at least one characteristic of the tape. Systems, head assemblies and encoding methods for use in providing such encoded servo track recording tape configurations are also described.
摘要翻译： 伺服记录磁带包括多个数据磁道和专用于伺服信息的伺服带。 伺服带包括沿着带长度的预定伺服载波宽度的基本均匀地写入的伺服载波信息，其中限定了至少一个编码的轨道间距。 每个编码的轨道间距具有沿磁带长度的交替擦除和不擦除部分，用于定义伺服磁道。 至少一个编码轨道间距的交替擦除和未擦除部分包括通过改变一个或多个擦除部分的长度而提供的编码信息。 编码信息可以代表沿磁带长度的磁带位置。 伺服带可以包括在基本均匀地写入的伺服载体信息中限定的两个或多个编码的轨道间距，每个编码的轨道间距限定对应的伺服轨道。 两个或多个编码轨道间距中的每一个的交替擦除和未擦除部分可以包括唯一地识别对应的伺服轨道的编码信息。 另一个伺服跟踪数据记录带包括一个伺服带，该伺服带包括至少一个沿着磁带长度写入伺服带的擦除宽度的单个频率伺服磁道。 单频伺服磁道包括代表带的至少一个特征的沿磁带长度的编码信息块。 还描述了用于提供这种编码伺服记录带配置的系统，头组件和编码方法。
-
公开(公告)号：US5675448A
公开(公告)日：1997-10-07
申请号：US351798
申请日：1994-12-08
IPC分类号： G11B5/584
CPC分类号： G11B5/584
摘要： A track pitch error compensation system for tape drives of the type configured for reading data from and/or writing data to magnetic tape having adjacent servo tracks with apparent centerlines spaced about a tracking axis. The tape drive includes a multichannel head assembly having a plurality of channels of read gaps which produce position error signals (PES) representative of positions of the read gaps on the tracking axis with respect to the apparent centerlines of servo tracks on the tape, a positioner responsive to positioner drive signals for driving and positioning the head assembly on the tracking axis with respect to the servo tracks, and a servo control system connected between the head assembly and positioner for generating positioner drive signals causing a servoing read gap to be servo locked to a desired servo track as a function of the PES when operated in a closed-loop servo mode. The method includes determining and storing one or more track pitch error values for each magnetic tape, and determining a gain constant of the servo system. PES correction offsets representative of the magnitudes of positioner drive signals causing the positioner to drive the head assembly distances sufficient to compensate for the track pitch errors are calculated as a function of the track pitch errors and the gain constant, and stored. During closed-loop servo mode operation the PES correction offset is summed with the PES to cause the servoing read gap to be servo locked to the desired centerlines of the servo tracks.
摘要翻译： 一种用于磁带驱动器的磁道间距误差补偿系统，其被配置用于从具有相邻伺服磁道的磁带读取数据和/或将数据写入到具有围绕跟踪轴线间隔开的明显中心线的磁带。 磁带驱动器包括具有多个读取间隙通道的多通道磁头组件，其产生相对于磁带上的伺服磁道的明显中心线的代表跟踪轴上的读取间隙的位置的位置误差信号（PES），定位器 响应于定位器驱动信号，用于驱动和定位相对于伺服轨道的跟踪轴上的头部组件;以及伺服控制系统，连接在头部组件和定位器之间，用于产生定位器驱动信号，使得伺服读取间隙被伺服锁定 当以闭环伺服模式操作时作为PES的函数的期望的伺服轨道。 该方法包括确定和存储每个磁带的一个或多个轨道间距误差值，以及确定伺服系统的增益常数。 作为轨道间距误差和增益常数的函数计算代表定位器驱动信号的大小的PES校正偏移，其定位器驱动信号的大小导致定位器驱动头部组件距离足以补偿轨道间距误差，并被存储。 在闭环伺服模式操作期间，PES校正偏移与PES相加，使得伺服读取间隙被伺服锁定到伺服轨道的期望中心线。
-
公开(公告)号：US5426543A
公开(公告)日：1995-06-20
申请号：US194752
申请日：1994-02-10
CPC分类号： G11B5/584
摘要： This invention relates to a magnetic recording head assembly and method enabling an end user to record a unique servo control track on a magnetic recording tape while the tape is in the recorder to be used for recording and playback of computer data. Previously, most such control tracks were applied only at the time of manufacture of preformatted media. The head assembly includes, in addition to a plurality of sets of read/write transducers, a servo write head having an extended transverse width for uniformly recording a servo signal across the width of a servo track section, and a servo erase head having a plurality of alternating erasing and non-erasing sections adapted to controllably erase portions of the previously recorded servo signal, resulting in unique servo control tracks.
摘要翻译： 磁记录头组件和方法本发明涉及一种磁记录头组件和方法，使得终端用户能够在磁带位于记录器中用于记录和重放计算机数据的同时在磁记录带上记录唯一的伺服控制轨迹。 以前，大多数这样的控制轨道仅在制造预格式化介质时应用。 除了多组读/写换能器之外，头组件还包括具有扩展横向宽度的伺服写头，用于在伺服磁道部分的宽度上均匀地记录伺服信号，以及具有多个伺服磁头的伺服擦除头 交替擦除和非擦除部分适于可控地擦除先前记录的伺服信号的部分，从而产生唯一的伺服控制轨道。
-
公开(公告)号：US4791643A
公开(公告)日：1988-12-13
申请号：US947409
申请日：1986-12-29
CPC分类号： H03M13/31 , G11B20/1809 , H03M13/05
摘要： An error correcting method for use with a continuous serialized stream of digital information, such as present with digitized stereo audio signals, in which data is formatted in frames containing a preselected number of data words, parity words which in combination with data words of other frames enable correction of data in yet other, spatially remote frames, error check words from which errors in any frame may be detected, and frame sync words, and wherein the parity words are encoded from three orthogonal data sets having in common a single data word so that that word can be reconstructed by operating on any of the three sets, thus enabling correction of that word even if one or two of the three sets also contains an error.
-
公开(公告)号：US20080198500A1
公开(公告)日：2008-08-21
申请号：US11708762
申请日：2007-02-20
IPC分类号： G11B5/596
CPC分类号： G11B5/584
摘要： In general, the invention is directed to servo techniques that utilize servo patterns to facilitate head positioning relative to the data tracks. For example, the servo techniques may include a first series of servo patterns configured to allow calculation of a position error signal that substantially mitigates error resulting from a variation in velocity of the data storage tape during detection of the at least one of the servo patterns in the first series. The servo techniques may also include a second series of servo patterns interleaved within the first series of servo patterns in order to encode data. The encoded data may include linear position information. Embodiments may allow a data storage tape meeting a currently accepted data storage tape specification, e.g., an LTO Ultrium specification, to record data in a higher density than currently implemented with the specification.
摘要翻译： 通常，本发明涉及利用伺服模式以便于相对于数据轨道进行头部定位的伺服技术。 例如，伺服技术可以包括第一系列伺服模式，所述第一系列伺服模式被配置为允许计算位置误差信号，所述位置误差信号基本上减轻在检测到所述伺服模式中的至少一个伺服模式期间数据存储带的速度变化导致的误差 第一个系列。 伺服技术还可以包括在第一系列伺服模式中交错的第二系列伺服模式，以便对数据进行编码。 编码数据可以包括线性位置信息。 实施例可以允许满足当前接受的数据存储磁带规范（例如LTO Ultrium规范）的数据存储磁带以比当前在说明书中实现的密度更高的密度记录数据。
-
7.发明授权System with matrix array of write heads and matrix array of magnetoresistive (MR) read heads 有权具有写磁头矩阵阵列和磁阻（MR）读头的矩阵阵列的系统公开(公告)号：US07342748B2
公开(公告)日：2008-03-11
申请号：US11013279
申请日：2004-12-14
CPC分类号： G11B5/00826 , G11B5/29 , G11B5/3958 , G11B5/4976 , G11B5/584
摘要： The invention provides a system comprising a non-linear array of magnetoresistive (MR) heads arranged in a two-dimensional matrix for reading information stored on magnetic media. The non-linear array of MR heads may comprise a planar array formed by a plurality of linear arrays of MR heads stacked to define a plurality of layers. Each of the linear arrays may share at least one shield element with another linear array of the non-linear array. In general, each layer is offset by one written track pitch and the number of layers of the invention is equal to the number of written track pitches in a channel pitch. The invention can also be used in a system for reading and writing information to magnetic media at improved track pitches relative to conventional read/write systems.
摘要翻译： 本发明提供一种系统，其包括以二维矩阵排列的用于读取存储在磁性介质上的信息的磁阻（MR）磁头的非线性阵列。 MR头的非线性阵列可以包括由堆叠以限定多个层的MR头的多个线性阵列形成的平面阵列。 每个线性阵列可以与非线性阵列的另一线性阵列共享至少一个屏蔽元件。 通常，每个层被一个写入的轨道间距偏移，本发明的层数等于通道间距中写入的轨道间距的数量。 本发明也可用于相对于常规读/写系统以改进的磁道间距读取和写入磁介质的系统。
-
公开(公告)号：US07173794B2
公开(公告)日：2007-02-06
申请号：US10664235
申请日：2003-09-17
CPC分类号： G11B5/5513 , G11B5/00813 , G11B5/5504
摘要： The invention provides a tape drive comprising a head mounted on a turntable. The turntable rotates to allow the head to access first and second sides of a data storage tape. Techniques for accessing the first and second sides may include rotating the turntable to position the head in first and second positions. In addition, the techniques may further include raising and lowering the turntable relative to the data storage tape in order to facilitate access to both sides of the data storage tape without requiring the data storage tape to be unspooled and re-spooled.
摘要翻译： 本发明提供了一种磁带驱动器，其包括安装在转台上的磁头。 转盘旋转以允许头部访问数据存储带的第一和第二侧。 用于接近第一和第二侧面的技术可以包括旋转转台以将头部定位在第一和第二位置。 此外，这些技术可以进一步包括相对于数据存储磁带提升和降低转盘，以便于访问数据存储磁带的两侧，而不需要使数据存储磁带未被插入和重新卷绕。
-
公开(公告)号：US07079343B2
公开(公告)日：2006-07-18
申请号：US10894326
申请日：2004-07-19
CPC分类号： G11B5/584 , G11B5/09 , G11B5/59655
摘要： The invention combines the benefits of sectored servo data with the benefits of time-based servo data. Recording media such as magnetic tape, magnetic disks, optical tape and optical disks can store servo data in a time-based sectored servo format.
摘要翻译： 本发明将分段伺服数据的优点与基于时间的伺服数据的优点相结合。 诸如磁带，磁盘，光带和光盘之类的记录介质可以以基于时间的扇区伺服格式存储伺服数据。
-
公开(公告)号：US06999258B2
公开(公告)日：2006-02-14
申请号：US10087415
申请日：2002-03-01
申请人： Richard W. Molstad , Yung Yip
发明人： Richard W. Molstad , Yung Yip
摘要： Servo positioning systems, methods, formats, and data recording media used in association with the same, employing additional timing reference information to improve immunity to time-based errors caused by instantaneous speed variations.
摘要翻译： 与其相关联使用的伺服定位系统，方法，格式和数据记录介质，采用额外的定时参考信息来提高对由瞬时速度变化引起的基于时间的误差的抵抗力。
-
-
-
-
-
-
-
-
-
搜索结果
35 条记录 (耗时 0.025 秒)
