公开(公告)号：US07158338B2

公开(公告)日：2007-01-02

申请号：US10854078

申请日：2004-05-24

申请人： John A. Koski ,  Timothy C. Hughes

发明人： John A. Koski ,  Timothy C. Hughes

IPC分类号： G11B5/584 ,  G11B21/02

CPC分类号： G11B5/584 ,  G11B27/107 ,  G11B27/3027 ,  G11B2220/90

摘要： Methods and systems for sensing a position of a transducer head with respect to a storage medium. One method includes generating a read signal from a servo track stored on a magnetic storage medium. The servo track includes servo frames of magnetic flux transitions forming detectable servo marks, the servo marks forming a tone field of repeating servo marks oriented at a first azimuth angle and a mid-frame synchronization mark incorporated within the tone field, wherein the tone field provides a metric reference for dimensional measurements between features within the servo frame(s). The number of servo marks in the tone field of each servo frame along a longitudinal direction of the servo track before the mid-frame synchronization mark and after the mid-frame synchronization mark varies with lateral position.

公开(公告)号：US06985323B2

公开(公告)日：2006-01-10

申请号：US10131499

申请日：2002-04-25

申请人： Steven L. Magnusson ,  Timothy C. Hughes

发明人： Steven L. Magnusson ,  Timothy C. Hughes

IPC分类号： G11B15/14

CPC分类号： G11B5/0086 ,  G11B5/531 ,  G11B5/534 ,  G11B15/125 ,  G11B15/14 ,  G11B15/6655 ,  G11B15/6656

摘要： A helical scan tape recorder (30) comprises a rotatable scanner (85) upon which is mounted a first set of plural transducing heads (W1, W3) and a second set of transducing heads (W2, W4). A transport system transports magnetic tape (31) proximate the rotatable scanner in a manner so that information is transduced by at least one of the transducing heads during a revolution of the scanner. The sets of transducing heads are so mounted on the scanner with respect to azimuthal orientation of the transducing heads that all tracks transduced by the transducing heads have a desired width regardless of an error in physical distance separating the sets of transducing heads. In one aspect, the first set of plural transducing heads comprises a first head (W1) and a third head (W3), and the second set of plural transducing heads comprises a second head (W2) and a fourth head (W4). The sets of transducing heads are mounted on the scanner so the first head and the third head transduce respective tracks during a first angular phase of the rotation of the scanner, and so that the second head and the fourth head transduce, during a second angular phase of the rotation of the scanner, respective tracks which partially overlap a previously-transduced track. The tracks on the tape alternate according to differing azimuthal orientation.

摘要翻译： 螺旋扫描磁带录像机（30）包括可旋转的扫描器（85），其上安装有第一组多个换能头（W1，W2）和第二组换能头（W 2，W 4）。 传送系统以可旋转扫描器的方式传送磁带（31），使得信息在扫描仪的转动期间由至少一个传感头传导。 传感头组相对于转换头的方位取向安装在扫描仪上，所有的传感头转向的轨道都具有所需的宽度，而不考虑分离传感头组的物理距离的误差。 一方面，第一组多个转换头包括第一头（W 1）和第三头（W 3），并且第二组多个换能头包括第二头（W 2）和第四头（W 4）。 传感头组安装在扫描器上，使得第一头部和第三头部在扫描器的旋转的第一角度相位期间转换相应的轨道，并且使得第二头部和第四头部在第二角度相位 扫描仪旋转的各个轨道与先前转换的轨道部分重叠。 磁带上的轨道根据不同的方位取向交替。

公开(公告)号：US4577811A

公开(公告)日：1986-03-25

申请号：US706553

申请日：1985-02-28

申请人： Stuart W. Bray ,  Timothy C. Hughes ,  Susan E. Ariniello

发明人： Stuart W. Bray ,  Timothy C. Hughes ,  Susan E. Ariniello

IPC分类号： G11B15/08 ,  G11B15/67 ,  G03B1/04 ,  G11B15/32

CPC分类号： G11B15/67 ,  G11B15/08

摘要： Apparatus and methods are disclosed for properly positioning the machine reel in a magnetic tape drive containing an automatic tape threading mechanism, wherein the file reel consists of a tape cartridge with tape attached to a leader block. The automatic threading mechanism connects to the leader block and pulls the tape through the tape path to insert the leader block into the hub of the machine reel. However, before the leader block can be inserted into the machine reel hub, the machine reel must be properly aligned to receive the leader block. The present invention provides apparatus and methods for properly aligning the machine reel to receive the tape leader block. The disclosure also provides a means to detect when the last wrap of tape is being removed from the machine reel hub during an unload operation and stop the machine reel at the proper angular location so that the tape leader block can be removed from the hub without damage to the hub or the leader block.

摘要翻译： 公开了用于将机器卷盘正确地定位在包含自动带穿线机构的磁带驱动器中的装置和方法，其中文件卷筒由附接到引导块的带的带盒组成。 自动穿线机构连接到引导块，并通过磁带路径拉动磁带，将引导块插入机器卷轴的轮毂。 然而，在引导块可以插入机器卷轴毂之前，机器卷轴必须正确对齐以接收引导块。 本发明提供了用于使机器卷轴正确对准以接收带引导块的装置和方法。 本公开还提供了一种方法，用于检测在卸载操作期间胶带的最后卷绕何时从机器卷轴轮毂移除，并将机器卷轴停止在适当的角度位置，使得带引导块可以从轮毂移除而不损坏 到枢纽或领导块。

公开(公告)号：US5068757A

公开(公告)日：1991-11-26

申请号：US433977

申请日：1989-11-09

申请人： Timothy C. Hughes ,  Steven P. Georgis

发明人： Timothy C. Hughes ,  Steven P. Georgis

IPC分类号： G11B5/588 ,  G11B15/467

CPC分类号： G11B5/588

摘要： In a servo tracking method and apparatus, a servo head (S) of a helical scan recorder (30) endeavors to travel equidistant between two servo signal-bearing stripes recorded on the tape (32). The recorder (30) determines a reference-crossing time at which the servo head (S) begins to cross a horizontal reference line (606) drawn with respect to the beginning of a stripe on the tape (32). The servo head (S) samples the amplitude of a servo signal provided on the tape (32) at a plurality of predetermined times after the reference-crossing time. A servo tracking circuit (175) uses the amplitude of the servo signal at the predetermined sampling times to determine how to adjust the position of said head (S) relative to the pitch of said stripe.

摘要翻译： 在伺服跟踪方法和装置中，螺旋扫描记录器（30）的伺服头（S）在记录在带子（32）上的两个伺服信号承载条带之间等距移动。 记录器（30）确定伺服头（S）开始穿过相对于带（32）上的条纹开头绘制的水平参考线（606）的参考交叉时间。 伺服头（S）在参考交叉时间之后的多个预定时间对提供在带（32）上的伺服信号的振幅进行采样。 伺服跟踪电路（175）使用在预定采样时间的伺服信号的振幅来确定如何调节所述磁头（S）相对于所述磁条间距的位置。

公开(公告)号：US4864511A

公开(公告)日：1989-09-05

申请号：US7047

申请日：1987-01-27

申请人： Michael E. Moy ,  Stuart W. Bray ,  Paul Kummli ,  Kelly J. Beavers ,  Frank Goodknight ,  James R. Baer ,  Timothy C. Hughes ,  John L. Seabury ,  Steven F. Nugent ,  Thomas J. Studebaker ,  Eugene Kutasy ,  Richard G. Sellke

发明人： Michael E. Moy ,  Stuart W. Bray ,  Paul Kummli ,  Kelly J. Beavers ,  Frank Goodknight ,  James R. Baer ,  Timothy C. Hughes ,  John L. Seabury ,  Steven F. Nugent ,  Thomas J. Studebaker ,  Eugene Kutasy ,  Richard G. Sellke

IPC分类号： G06F3/06 ,  G11B15/68 ,  G11B27/00 ,  G11B27/36

CPC分类号： G06F3/0601 ,  G11B15/688 ,  G11B27/002 ,  G11B27/36 ,  G06F2003/0698 ,  G11B2220/41 ,  G11B2220/90

摘要： A storage and retrieval subsystem in a data processing system includes a plurality of magnetic tape cartridges, a host computer, and a library storage module storing the plurality of magnetic tape cartridges in substantially upright positions. The library storage module includes a first cylindrical array of storage cells centered about a vertical axis, a second cylindrical array concentrically arranged about the first array, and a library tape unit including a plurality of tape drives, each of the tape drives being adapted to receive one of the magnetic tape cartridges in a substantially horizontal transducing position. A robot within the library storage module is used to transfer selected ones of the magnetic tape cartridges between their substantially upright positions and the substantially horizontal transducing positions at a selected tape drive. A first controller outboard the channel communicating with the host computer is adapted to receive commands from the host computer for interfacing between the host computer and the library storage module, and a second controller inboard of the channel is adapted to receive commands from the outboard controller for interfacing between the outboard controller and the robot.

公开(公告)号：US07522372B2

公开(公告)日：2009-04-21

申请号：US11602872

申请日：2006-11-20

申请人： John A. Koski ,  Timothy C. Hughes

发明人： John A. Koski ,  Timothy C. Hughes

IPC分类号： G11B5/584

CPC分类号： G11B5/584 ,  G11B27/107 ,  G11B27/3027 ,  G11B2220/90

摘要： Methods and systems for sensing a position of a transducer head with respect to a storage medium. One method includes generating a read signal from a servo track stored on a magnetic storage medium. The servo track includes servo frames of magnetic flux transitions forming detectable servo marks, the servo marks forming a tone field of repeating servo marks oriented at a first azimuth angle and a mid-frame synchronization mark incorporated within the tone field, wherein the tone field provides a metric reference for dimensional measurements between features within the servo frame(s). The number of servo marks in the tone field of each servo frame along a longitudinal direction of the servo track before the mid-frame synchronization mark and after the mid-frame synchronization mark varies with lateral position.

公开(公告)号：US06697209B2

公开(公告)日：2004-02-24

申请号：US09761658

申请日：2001-01-18

申请人： Timothy C. Hughes ,  David E. Norton, Jr.

发明人： Timothy C. Hughes ,  David E. Norton, Jr.

IPC分类号： G11B5584

CPC分类号： G11B15/4677 ,  G11B5/00869 ,  G11B5/534 ,  G11B15/14

摘要： In a helical scan recording system, magnetic tape (31) is transported by a tape transport (98) proximate a rotating scanner (85). The scanner has a pair of read heads (82) mounted thereon, e.g., a first read head and a second read head, which travel in a helical direction on the magnetic tape in view of the transport of the tape and rotation of the scanner. A synchronization detection system (38) determines a first synchronization mark detection time at which a first synchronization mark is read by the first read head from the first track, and a second synchronization mark detection time at which a synchronization mark read by the second read head from the second track. A position error signal generator (100) develops a position error signal (PES) based upon a difference between the first synchronization mark detection time and the second synchronization mark detection time. The servo or transport controller (98) uses the position error signal to develop a servo correction signal for adjusting the position of the read heads. In accordance with one aspect of the present invention, a first distance separating the sync marks along the helical direction of head travel is sufficiently less than a second distance by which the read heads of the pair are circumferentially separated on the scanner to render the position error signal (PES) immune to any variation in the rotational speed of the scanner. In accordance with another aspect of the invention, the position error signal generator comprises a coarse position error signal generator; a fine adjustment signal generator; and a combination element. The combination element combines a course position error signal and an adjustment signal to obtain the position error signal PES which is used by the servo controller to keep the read heads traveling along a longitudinal centerline of their respective tracks.

摘要翻译： 在螺旋扫描记录系统中，磁带（31）通过靠近旋转扫描仪（85）的磁带传送（98）传送。 考虑到带的传送和扫描仪的旋转，扫描仪具有安装在其上的一对读取头（82），例如第一读取头和第二读取头，其在磁带上沿螺旋方向行进。 同步检测系统（38）确定第一同步标记检测时间，第一同步标记由第一读取头从第一轨道读取，第二同步标记检测时间由第二读取头读取的同步标记 从第二轨。 位置误差信号发生器（100）基于第一同步标记检测时间和第二同步标记检测时间之间的差异来产生位置误差信号（PES）。 伺服或传送控制器（98）使用位置误差信号产生伺服校正信号，以调整读取头的位置。 根据本发明的一个方面，沿着头部行程的螺旋方向分离同步标记的第一距离足够小于在扫描仪上沿着圆周分隔的一对读取头的第二距离，以产生位置误差 信号（PES）免受扫描仪转速的任何变化。 根据本发明的另一方面，位置误差信号发生器包括粗略位置误差信号发生器; 微调信号发生器; 和组合元素。 组合元件组合了位置误差信号和调整信号，以获得伺服控制器使用的位置误差信号PES，以保持读取头沿其相应轨道的纵向中心线行进。

公开(公告)号：US5734518A

公开(公告)日：1998-03-31

申请号：US476367

申请日：1995-06-07

申请人： Timothy C. Hughes

发明人： Timothy C. Hughes

IPC分类号： G11B5/027 ,  G11B5/008 ,  G11B5/48 ,  G11B5/53 ,  G11B5/588 ,  G11B15/02 ,  G11B15/18 ,  G11B15/20 ,  G11B15/467 ,  G11B15/473 ,  G11B15/60 ,  G11B27/032 ,  G11B27/036 ,  G11B27/13 ,  G11B27/36 ,  G11B33/10 ,  G11B5/596

CPC分类号： G11B15/1875 ,  G11B15/026 ,  G11B15/20 ,  G11B15/4671 ,  G11B15/4672 ,  G11B15/4673 ,  G11B15/4677 ,  G11B15/4678 ,  G11B15/4736 ,  G11B15/602 ,  G11B27/036 ,  G11B27/13 ,  G11B27/36 ,  G11B33/10 ,  G11B5/0086 ,  G11B5/4893 ,  G11B5/531 ,  G11B5/534 ,  G11B2220/90 ,  G11B27/032

摘要： Methods and apparatus are provided for determining a servo offset value and a take-up reel velocity for imparting a desired linear velocity to tape in a helical scan recording system (20). The helical scan recorder system records information on a magnetic tape (22), the magnetic tape being transported between a supply reel (24) and a take-up reel (26) in the helical scan recorder through a tape path, which tape path includes at least a partial wrapping of the tape around a drum (30) of the helical scan recorder. The methods include moving the tape from the supply reel to the take-up reel whereby the tape travels a predetermined displacement; rewinding the tape by the tape extraction displacement and determining an angular rewind displacement of the take-up reel; and using the determined displacements to ascertain parameters including a desired velocity of the take-up reel.

摘要翻译： 提供了用于确定伺服偏移值和卷取卷轴速度的方法和装置，用于在螺旋扫描记录系统（20）中向带施加期望的线速度。 螺旋式扫描记录器系统通过磁带路径将信息记录在磁带（22）上，该磁带通过磁带路径在螺旋扫描记录器中在供电卷轴（24）和卷取卷轴（26）之间运输，该磁带路径包括 将所述带至少部分地缠绕在所述螺旋扫描记录器的鼓（30）周围。 所述方法包括将带从供带盘移动到卷带盘，由此带行进预定位移; 通过磁带提取位移来重绕磁带并确定卷绕卷轴的倒角位移; 并且使用确定的位移来确定包括卷取卷轴的期望速度的参数。

公开(公告)号：US5535068A

公开(公告)日：1996-07-09

申请号：US180485

申请日：1994-01-12

申请人： Timothy C. Hughes

发明人： Timothy C. Hughes

IPC分类号： G11B5/09 ,  G11B15/02 ,  G11B15/087 ,  G11B15/18 ,  G11B15/467 ,  G11B20/10 ,  G11B20/12 ,  G11B20/18 ,  G11B27/00 ,  G11B27/10 ,  G11B27/30 ,  G11B15/46 ,  G11B15/48

CPC分类号： G11B27/3027 ,  G11B15/026 ,  G11B15/087 ,  G11B15/1875 ,  G11B15/4673 ,  G11B20/10 ,  G11B20/12 ,  G11B20/18 ,  G11B27/005 ,  G11B27/107 ,  G11B2020/183 ,  G11B2220/90

摘要： A helical scan system (10) determines whether a medium is a non-native formatted medium and controls operating parameters (e.g., tape speed) so that a non-native formatted medium can be read without resort to embedded servo information in the non-native medium. The helical scan system reads the medium in a manner to obtain format-indicative information therefrom, and then determines whether the medium is non-native formatted. If the medium is non-native formatted, a controller determines operating parameters required by the system to read the non-native formatted medium and generates signals corresponding to the required operating parameters. The medium is preferably read in a slow speed mode in order to obtain format-indicative information therefrom, and block header information obtained from the medium is analyzed to determine whether the medium is non-native formatted.

摘要翻译： 螺旋扫描系统（10）确定介质是否是非原始格式的介质，并且控制操作参数（例如，磁带速度），使得可以读取非本机格式的介质而不需要在非本地的情况下访问嵌入的伺服信息 中。 螺旋扫描系统以从其中获得格式指示信息的方式读取介质，然后确定介质是否是非原始格式的。 如果介质是非本地格式化的，则控制器确定系统所需的操作参数以读取非原始格式的介质并产生对应于所需操作参数的信号。 优选地以慢速模式读取介质以从其获得格式指示信息，并且分析从介质获得的块头信息以确定介质是否是非本地格式化的。

公开(公告)号：US07245453B2

公开(公告)日：2007-07-17

申请号：US11602871

申请日：2006-11-20

申请人： John A. Koski ,  Timothy C. Hughes

发明人： John A. Koski ,  Timothy C. Hughes

IPC分类号： G11B5/584

CPC分类号： G11B5/584 ,  G11B27/107 ,  G11B27/3027 ,  G11B2220/90

摘要： Methods and systems for sensing a position of a transducer head with respect to a storage medium. One method includes generating a read signal from a servo track stored on a magnetic storage medium. The servo track includes servo frames of magnetic flux transitions forming detectable servo marks, the servo marks forming a tone field of repeating servo marks oriented at a first azimuth angle and a mid-frame synchronization mark incorporated within the tone field, wherein the tone field provides a metric reference for dimensional measurements between features within the servo frame(s). The number of servo marks in the tone field of each servo frame along a longitudinal direction of the servo track before the mid-frame synchronization mark and after the mid-frame synchronization mark varies with lateral position.