公开(公告)号：US20230142229A1

公开(公告)日：2023-05-11

申请号：US18152527

申请日：2023-01-10

申请人： FUJIFILM Corporation

发明人： Ren ISHIKAWA ,  Yuto MURATA

IPC分类号： G11B21/10

CPC分类号： G11B21/103

摘要： Provided is a magnetic tape device including: a magnetic head having a magnetic element that acts on a magnetic layer formed on a front surface of a magnetic tape; and a position adjusting actuator that adjusts a position of the magnetic element in a normal direction of the front surface by moving the magnetic head; and a processor that controls an operation of the position adjusting actuator.

公开(公告)号：US09640214B2

公开(公告)日：2017-05-02

申请号：US14919530

申请日：2015-10-21

申请人： Group 47, Inc.

发明人： Daniel Scott Rosen

IPC分类号： G11B7/003 ,  G11B7/007 ,  G11B5/584 ,  G11B15/18 ,  G11B21/10 ,  G11B27/10 ,  G11B7/14 ,  G11B7/09 ,  G11B7/13 ,  G11B20/12

CPC分类号： G11B7/003 ,  G11B5/584 ,  G11B7/00736 ,  G11B7/0901 ,  G11B7/0938 ,  G11B7/13 ,  G11B7/14 ,  G11B15/1825 ,  G11B20/1201 ,  G11B21/103 ,  G11B27/107

摘要： Digital optical tape archival storage systems and methods are disclosed. A digital optical tape recorder may simultaneously write data and two or more guide tracks onto a digital optical tape recording medium. A digital optical taper reader may include a camera comprising an array of detectors to capture a two-dimensional image of the digital optical tape recording medium, and an image processor to extract the data from the two-dimensional image. The camera may capture the two-dimensional image of the digital optical tape recording medium without aligning individual data bits recorded on the digital optical tape recording medium to individual detectors within the camera.

公开(公告)号：US09552841B2

公开(公告)日：2017-01-24

申请号：US13862278

申请日：2013-04-12

申请人： International Business Machines Corporation

发明人： Nhan X. Bui ,  Giovanni Cherubini ,  Evangelos S. Eleftheriou ,  Reed A. Hancock ,  Robert A. Hutchins

IPC分类号： G11B21/10 ,  G11B5/584 ,  G11B15/18

CPC分类号： G11B21/103 ,  G11B5/584 ,  G11B15/18

摘要： In one general embodiment, a magnetic recording tape includes a plurality of servo tracks, each servo track comprising a series of magnetically defined bars, wherein an average stripe width of the bars is between about 1.0 micron and about 2.2 microns, where an average servo frame length of groups of the bars comprising a servo frame is between about 120 microns and about 180 microns. In another general embodiment, a system includes a head having at least one servo reader and an array of data transducers of a type selected from a group consisting of readers and writers; and a controller operative to selectively enable every other transducer of a particular type in the array in a first mode of operation, and operative to selectively enable every transducer of the particular type in the array in a second mode of operation.

摘要翻译： 在一个一般实施例中，磁记录带包括多个伺服轨道，每个伺服轨道包括一系列磁力限定的杆，其中杆的平均条宽在约1.0微米至约2.2微米之间，其中平均伺服框架 包括伺服框架的条的组的长度在约120微米和约180微米之间。 在另一个一般实施例中，系统包括具有至少一个伺服读取器和从由读取器和写入器组成的组中选择的类型的数据换能器阵列的头部; 以及控制器，其可操作以在第一操作模式中选择性地使能阵列中的特定类型的每个其它换能器，并且可操作以在第二操作模式中选择性地使能阵列中的特定类型的每个换能器。

公开(公告)号：US06433952B1

公开(公告)日：2002-08-13

申请号：US09400233

申请日：1999-09-21

申请人： Jürgen Kaaden ,  Peter Mahr

发明人： Jürgen Kaaden ,  Peter Mahr

IPC分类号： G11B5596

CPC分类号： G11B5/584 ,  G11B5/5508 ,  G11B7/0031 ,  G11B11/10547 ,  G11B11/10576 ,  G11B11/10578 ,  G11B21/086 ,  G11B21/103

摘要： A method for tracking control of a head unit with respect to data tracks on a magnetic tape determines a first tracking signal and a second tracking signal from control tracks recorded on the tape. The data tracks are divided into successive data sections, each of which is subdivided into an initial region and a useful region. A first control track extends over the entire length of the data section. In addition to this, a second control track is provided in the initial region of each data section. A first tracking signal is generated from the first control track and a second tracking signal is generated from the first and second control track. A difference signal is generated and stored, which is based on a comparison of the first and second tracking signal. A tracking control signal applied to an actuator adjusting the head unit is generated from the second tracking signal when the second tracking signal is available. The tracking control signal is generated from the first tracking signal and the difference signal when the second tracking signal is not available.

摘要翻译： 用于跟踪磁头单元相对于磁带上的数据磁道的控制的方法从记录在磁带上的控制轨迹确定第一跟踪信号和第二跟踪信号。 数据磁道被分成连续的数据部分，每个部分被细分为初始区域和有用区域。 第一控制轨道在数据段的整个长度上延伸。 除此之外，在每个数据部分的初始区域中提供第二控制轨迹。 从第一控制轨道产生第一跟踪信号，并且从第一和第二控制轨道产生第二跟踪信号。 产生并存储基于第一和第二跟踪信号的比较的差分信号。 当第二跟踪信号可用时，从第二跟踪信号产生施加到调节头单元的致动器的跟踪控制信号。 当第二跟踪信号不可用时，从第一跟踪信号和差信号产生跟踪控制信号。

公开(公告)号：US06091565A

公开(公告)日：2000-07-18

申请号：US322879

申请日：1999-05-28

申请人： Theodore A. Schwarz ,  Robert J. Youngquist ,  Hung T. Tran

发明人： Theodore A. Schwarz ,  Robert J. Youngquist ,  Hung T. Tran

IPC分类号： G11B5/55 ,  G11B5/584 ,  G11B21/08 ,  G11B21/10 ,  G11B21/02

CPC分类号： G11B5/5508 ,  G11B21/083 ,  G11B21/103 ,  G11B5/5504 ,  G11B5/584

摘要： A tape servo system includes tape having bands of tracks including at least one data band having a plurality of data tracks of track pitch P and a servo band dedicated for servo information. The servo band includes two or more noncontiguous servo tracks with each pair of adjacent servo tracks of the two or more noncontiguous servo tracks having a center to center separation equal to M * P, wherein M for each pair of adjacent servo tracks may be any integer .gtoreq.2. The system may further include a head assembly having a single magnetoresistive read element tapped to provide at least (K+1) tapped servo read elements for use in reading servo information written to the servo band; wherein K is equal to the integer M for the pair of adjacent servo tracks having the greatest center to center separation and a repositioning assembly for repositioning the head assembly as a function of the servo information. Further, the center to center separation between pairs of adjacent servo tracks of the two or more noncontiguous servo tracks may be different for at least two pairs of adjacent servo tracks. A servo tracking data recording tape with two or more noncontiguous servo tracks having center to center separation between pairs of adjacent servo tracks being different for at least two pairs of adjacent servo tracks is also provided along with a method for servo track identification for use therewith. Further, track read/write head assemblies wherein the servo read and write elements are along the same gap lines as the data read and write assemblies, respectively, are provided.

摘要翻译： 带式伺服系统包括具有轨道带的磁带，该轨道包括至少一个具有多个磁道间距P的数据磁道的数据带和专用于伺服信息的伺服带。 伺服带包括两个或更多个不连续的伺服轨道，其中两个或更多个不连续的伺服轨道的每对相邻伺服轨道具有等于M * P的中心到中心间隔，其中每对相邻伺服轨道的M可以是任何整数 > / = 2。 该系统还可以包括具有单个磁阻读取元件的头组件，其被抽头以提供用于读取写入伺服带的伺服信息的至少（K + 1）个抽头伺服读取元件; 其中K等于具有最大中心到中心分离的一对相邻伺服轨道的整数M.以及用于根据伺服信息重新定位头部组件的重新定位组件。 此外，对于至少两对相邻的伺服磁道，两个或更多个不连续伺服磁道的相邻伺服磁道对之间的中心到中心分离可以是不同的。 具有两个或更多个不连续伺服磁道的伺服跟踪数据记录磁带还提供有用于至少两对相邻伺服磁道的至少两对相邻伺服磁道不同的中心到中心分离的伺服磁道。 此外，跟踪读/写头组件，其中伺服读和写元件分别与数据读写组件沿着相同的间隙线。

公开(公告)号：US5999359A

公开(公告)日：1999-12-07

申请号：US853243

申请日：1997-05-09

申请人： Donald J. Fasen

发明人： Donald J. Fasen

IPC分类号： G11B5/48 ,  G11B5/55 ,  G11B5/584 ,  G11B21/10 ,  G11B21/02

CPC分类号： G11B5/5508 ,  G11B21/103 ,  G11B5/4893 ,  G11B5/584

摘要： A head positioning system achieves higher track alignment accuracy for audio, video, or data recording or playback. In a digital tape drive embodiment, the positioning system includes a servo read head for receiving conventional servo code from the tape, a voice coil motor that moves the head in relation to the tape, a light source mounted to move with the head, a lateral effect photodiode that is illuminated by the light source to monitor misalignment of the head and tape, and a control circuit. The positioning system locates the head in alignment with the tape when conventional positioning in response to the servo code is not possible, such as when the tape is not moving. Movement of the light source modulates two currents provided by the photodiode. The control circuit drives the source according to the normalized sum of the currents and drives the motor according to the difference of the currents. Alignment on smaller width tracks, improved track access time, improved reversal at end of tape, increased track density, and increasing storage capacity result. Alternate embodiments of the positioning system include disk media instead of tape, and include heads responsive to optically recorded signals such as used with a compact disk.

摘要翻译： 头部定位系统实现音频，视频或数据记录或回放的更高的轨道对准精度。 在数字磁带驱动器实施例中，定位系统包括用于从磁带接收常规伺服代码的伺服读取头，相对于磁带移动磁头的音圈电机，安装成与磁头一起移动的光源， 由光源照明的效应光电二极管，以监测磁头和磁带的未对准，以及控制电路。 当无法响应于伺服代码的常规定位时，例如当磁带不移动时，定位系统将磁头定位成与磁带对准。 光源的移动调制由光电二极管提供的两个电流。 控制电路根据归一化的电流驱动源，并根据电流的差异驱动电动机。 较小宽度轨道上的对准，改进的轨道访问时间，磁带末端改进的反转，轨道密度增加和存储容量增加。 定位系统的替代实施例包括磁盘介质而不是磁带，并且包括响应光学记录信号的磁头，例如与光盘一起使用的磁头。

公开(公告)号：US5844814A

公开(公告)日：1998-12-01

申请号：US722960

申请日：1996-09-27

申请人： Alex Chliwnyj ,  Dennis Peter Rienstra ,  Steven Carter Wills

发明人： Alex Chliwnyj ,  Dennis Peter Rienstra ,  Steven Carter Wills

IPC分类号： G01D5/347 ,  G11B5/55 ,  G11B5/584 ,  G11B21/08 ,  G11B21/10

CPC分类号： G11B5/584 ,  G01D5/34715 ,  G11B21/086 ,  G11B21/103 ,  G11B5/5508

摘要： A high resolution, independent position sensor is provided, having application in a magnetic tape drive and other environments in which a linear or angular position is to be monitored. Analog outputs from an inexpensive, low resolution optical encoder are processed to correct gain and offset distortions and are used as the basis for an interpolation process. If a code strip having a 127-micron grating is used, a resolution of about 0.125 microns can be achieved.

摘要翻译： 提供了一种高分辨率，独立的位置传感器，其应用于磁带驱动器和其中将监视线性或角度位置的其它环境。 来自便宜的低分辨率光学编码器的模拟输出被处理以校正增益和偏移失真，并且被用作插值过程的基础。 如果使用具有127微米光栅的代码条，则可以实现约0.125微米的分辨率。

公开(公告)号：US5815337A

公开(公告)日：1998-09-29

申请号：US547270

申请日：1995-10-24

申请人： Richard K. Milo

发明人： Richard K. Milo

IPC分类号： G11B21/02 ,  G11B5/008 ,  G11B5/588 ,  G11B21/04 ,  G11B21/10

CPC分类号： G11B21/103 ,  G11B21/04 ,  G11B5/0086 ,  G11B5/588

摘要： A tape drive with an arcuate scanner and a method for calibrating the arcuate scanner double wraps recording tape on the scanner to create two scanner/tape contact zones. The two crossings of a scannable line on the recording tape by a scanner head permit the transit times of the scanner head above the scannable line and below the scannable line to be measured. A comparison of the transit times provides an indication as to whether the center of rotation of the scanner is correctly pointing at the recording tape centerline, and corrective action is taken if there is a pointing error. Once the scanner is correctly pointed, an accurate calibration of the scanner, including the commutation and timing between read and write operations, is performed by measuring the transit time of a scanner head from a stationary point to a defined location on the tape.

摘要翻译： 具有弓形扫描仪的磁带机和用于校准弓形扫描仪的方法在扫描仪上双重记录磁带，以创建两个扫描仪/磁带接触区域。 通过扫描头在记录带上的可扫描线的两个交叉口允许扫描仪头部在可扫描线上方和下方可扫描线路上的运送时间被测量。 传输时间的比较提供了扫描仪的旋转中心是否正确地指向记录带中心线的指示，并且如果存在指向误差，则采取纠正措施。 一旦扫描仪正确指向，扫描仪的精确校准（包括读取和写入操作之间的换向和定时）通过测量扫描仪头从固定点到磁带上定义位置的传播时间来执行。

公开(公告)号：US5640285A

公开(公告)日：1997-06-17

申请号：US256907

申请日：1994-08-09

申请人： Fran.cedilla.ois Maurice ,  Joseph Colineau ,  Charaf Hanna ,  Michel Sonrier

发明人： Fran.cedilla.ois Maurice ,  Joseph Colineau ,  Charaf Hanna ,  Michel Sonrier

IPC分类号： G11B20/10 ,  G11B5/008 ,  G11B5/49 ,  G11B5/584 ,  G11B7/0045 ,  G11B11/10 ,  G11B11/105 ,  G11B15/12 ,  G11B20/00 ,  G11B20/12 ,  G11B21/10 ,  G11B5/39

CPC分类号： G11B5/4969 ,  G11B15/12 ,  G11B20/00 ,  G11B21/10 ,  G11B21/103 ,  G11B5/00813 ,  G11B5/00821 ,  G11B5/584 ,  G11B7/0045 ,  G11B11/10547

摘要： System for recording/writing on a recording medium in which there are distributed, on the tracks, groups (G0) of tracks with positive continuous components and groups (G1) of tracks with negative continuous components. In reading, the values of the different signals are integrated for each track. Then, on the one hand, a first addition circuit S1 adds up the results of integration of the first tracks of each group of tracks and, secondly, a second addition circuit S2 adds up the results of integration of the last tracks of each group of tracks. A comparison circuit (CD) compares the results of additions of the two addition circuits to correct the track-following operation.

摘要翻译： PCT No.PCT / FR93 / 01278 Sec。 371日期1994年8月9日 102（e）日期1994年8月9日PCT提交1993年12月21日PCT公布。 出版物WO94 / 15334 日期1994年7月7日在记录媒体上进行记录/写入的系统，其中在轨道上分布有具有负连续分量的轨道的正连续分量和组（G1）的轨道的组（G0）。 在读取时，不同信号的值针对每个轨道进行积分。 然后，一方面，第一加法电路S1将每组磁道的第一磁道的积分结果相加，其次，第二加法电路S2将每组的最后一条磁迹的积分结果相加 轨道 比较电路（CD）比较两个加法电路的相加结果，以校正跟踪跟踪操作。

公开(公告)号：US5493553A

公开(公告)日：1996-02-20

申请号：US284653

申请日：1994-08-17

申请人： Francois Maurice ,  Michel Sonrier ,  Charaf Hanna ,  Joseph Colineau

发明人： Francois Maurice ,  Michel Sonrier ,  Charaf Hanna ,  Joseph Colineau

IPC分类号： G11B5/027 ,  G11B5/49 ,  G11B11/105 ,  G11B15/12 ,  G11B20/10 ,  G11B21/10 ,  G11B7/00

CPC分类号： G11B15/12 ,  G11B21/103 ,  G11B5/4969 ,  G11B11/10547

摘要： A method and system for preventing cross-talk during reproduction of data recorded on a high density recording medium. The method includes the steps of receiving signals from at least three consecutively parallel information tracks on a recording medium, determining first and second cross-talk coefficients representing a degree of cross-talk between the three parallel information tracks, filtering the first and second cross-talk coefficients, correcting the cross-talk between the first, second, and third information tracks in accordance with the first and second cross-talk coefficients, forming a difference between the first and second cross-talk coefficients and integrating this difference to generate a track following correction signal, and repeating the above steps for each of the information tracks on the recording medium.

摘要翻译： PCT No.PCT / FR93 / 01279 Sec。 371日期：1994年8月17日 102（e）日期1994年8月17日PCT提交1993年12月21日PCT公布。 出版物WO94 / 15335 日期：1994年7月7日。一种用于在再现记录在高密度记录介质上的数据时防止串扰的方法和系统。 该方法包括以下步骤：从记录介质上的至少三个连续并行的信息轨道接收信号，确定表示三个并行信息轨迹之间的串扰程度的第一和第二串扰系数， 通话系数，根据第一和第二串扰系数校正第一，第二和第三信息轨道之间的串扰，形成第一和第二串扰系数之间的差异并积分该差异以产生轨迹 跟随校正信号，并且对记录介质上的每个信息轨道重复上述步骤。