公开(公告)号：US5257091A

公开(公告)日：1993-10-26

申请号：US837728

申请日：1992-02-19

申请人： Gustavo Caicedo, Jr. ,  Scott L. Hanson

发明人： Gustavo Caicedo, Jr. ,  Scott L. Hanson

IPC分类号： G01B9/04 ,  G01B11/27 ,  G11B21/00 ,  G11B23/04 ,  G11B33/10 ,  G01B11/14

CPC分类号： G11B23/049 ,  G01B11/27 ,  G01B9/04 ,  G11B21/00 ,  G11B33/10

摘要： An optical alignment system for aligning a multiple gap tape head assembly of a tape drive, including a cartridge plate insertable in a tape drive and having a first surface mirror that is parallel to a reference plane for the drive when the plate is inserted in the drive, a microscope objective imaging lens for providing images of the head gaps of the tape head assembly, a video camera and display for providing an operator viewable display of the output of the imaging lens, translation apparatus for moving the imaging lens, and an interferometer cooperating with the first surface mirror for maintaining the imaging lens at a constant distance relative to the first surface mirror as the translation apparatus moves the imaging lens from one head gap to another, such that the imaging lens moves in a plane parallel to the reference plane for the drive. By maintaining the imaging lens at a constant distance relative to the first surface mirror reflecting surface, as the imaging lens is moved from one head gap to another, the misalignment of a tape head assembly can be detected and corrected by an operator by reference to the images of the head gaps which are displayed with a reticle that is at a fixed location in the field of view of the imaging lens.

摘要翻译： 一种用于对准带驱动器的多间隙带头组件的光学对准系统，包括可插入带驱动器中的盒板，并且当板被插入驱动器中时具有平行于用于驱动器的参考平面的第一表面反射镜 ，用于提供磁带头组件的磁头间隙的图像的显微镜物镜成像透镜，用于提供成像透镜的输出的操作者可视显示的摄像机和显示器，用于移动成像透镜的平移装置以及协作的干涉仪 其中第一表面镜用于当成像透镜从一个头部间隙移动到另一个头部间隙时使成像透镜相对于第一表面镜保持恒定的距离，使得成像透镜在平行于参考平面的平面中移动， 驱动器。 通过将成像透镜相对于第一表面反射镜反射表面保持恒定的距离，当成像透镜从一个头部间隙移动到另一个头部间隙时，可以通过参考的方式检测和校正磁头组件的未对准 使用在成像透镜的视野中的固定位置处的掩模版显示的头部间隙的图像。

公开(公告)号：US5218501A

公开(公告)日：1993-06-08

申请号：US691760

申请日：1991-04-26

申请人： Richard G. Sellke

发明人： Richard G. Sellke

IPC分类号： G11B15/60

CPC分类号： G11B15/60

摘要： A tape guide device adapted for a magnetic tape transport system is disclosed. A biasable flat spring, mounted on a barrel roller mechanism, frictionally engages the top edge of magnetic tape. The spring is mounted in order to allow simple adjustment of both the force applied to the top edge of the magnetic tape and the contact angle between the tape and the spring at the arc-radius of the barrel roller.

摘要翻译： 公开了适用于磁带传送系统的磁带引导装置。 安装在滚筒机构上的偏置平板弹簧摩擦地接合磁带的顶部边缘。 安装弹簧以便简单地调节施加到磁带的顶部边缘的力以及在辊筒的圆弧半径处的带和弹簧之间的接触角。

公开(公告)号：US5191492A

公开(公告)日：1993-03-02

申请号：US931110

申请日：1992-08-17

申请人： Ashok B. Nayak ,  Donald Schilling

发明人： Ashok B. Nayak ,  Donald Schilling

IPC分类号： G11B5/008 ,  G11B5/55 ,  G11B5/584 ,  G11B5/588 ,  G11B33/08

CPC分类号： G11B5/5504 ,  G11B5/5508 ,  G11B5/584 ,  G11B5/588 ,  G11B33/08 ,  G11B5/00817

摘要： Tape head positioning apparatus that includes a head carriage frame and a parallel beam positioning structure supported by the head carriage for supporting the magnetic tape head and for variably positioning the magnetic tape head relative to the carriage along a path generally transverse to the tape travel direction. The parallel beam positioning structure includes parallel support beams secured at their ends to the head carriage. The magnetic tape head is secured between the bender beam at a location generally between their ends. In a particular embodiment of the parallel beam positioning apparatus, the parallel support beams comprise first and second resilient reed beams having their ends secured to the head carriage and configured to be deflectable in a direction transverse to the tape travel direction. A voice coil linear motor deflects the reed beams pursuant to a control signal to move the magnetic tape head along the path transverse to the tape travel direction. In a further embodiment of the parallel beam positioning apparatus, the support beams comprise first and second parallel piezoelectric bender beams having their ends secured to the head carriage and configured to deflect in a direction transverse to the tape travel direction in response to a control signal. Deflection of the bender beams pursuant to the control signal displaces the magnetic tape head along the path transverse to the tape travel direction.

摘要翻译： 磁带头定位装置包括磁头支架框架和由磁头支架支撑的平行光束定位结构，用于支撑磁带头，并且用于相对于支架沿着大致横向于磁带行进方向的路径可变地定位磁带头。 平行光束定位结构包括在其端部固定到头部托架的平行支撑梁。 磁带头固定在通常在其端部之间的位置处的弯曲梁之间。 在平行光束定位装置的特定实施例中，平行支撑梁包括第一和第二弹性簧片梁，其第一和第二弹性簧片梁的端部固定到磁头滑架并且被构造成可沿横向于磁带行进方向的方向偏转。 音圈线性电机根据控制信号使簧片光束偏转，以使磁带头沿横向于磁带行进方向的路径移动。 在平行光束定位装置的另一实施例中，支撑梁包括第一和第二平行压电弯曲梁，其端部固定到头部托架，并且构造成响应于控制信号沿横向于磁带行进方向的方向偏转。 根据控制信号的弯曲光束的偏转使磁带头沿横向于磁带行进方向的路径移位。

公开(公告)号：US5182687A

公开(公告)日：1993-01-26

申请号：US510548

申请日：1990-04-18

申请人： Kenneth C. Campbell ,  Roger M. Gray ,  Barry C. Kockler

发明人： Kenneth C. Campbell ,  Roger M. Gray ,  Barry C. Kockler

IPC分类号： G11B15/68

CPC分类号： G11B15/681

摘要： The present invention provides an automated cartridge loader 10 of novel design for use with a cartridge drive 12. In accordance with one aspect of the present invention, there is provided a sequentially loading cartridge loader 10 which allows the unattended storage of gigabytes of data. The loaders are adapted to be attached to a cartridge drive 12. The novel loaders of the present invention may comprise three moving components: the magazine 30, the pusher 91, and the gripper 93. Each moving component has its own drive motor 80, 94, 146. The magazine 30 has a plurality of slots 40 for holding cartridges 38 which are loaded into a cartridge drive 12. The pusher 91 of the present invention is aligned with the cartridge drive 12 and pushes the cartridges 38 into the cartridge drive 12. The gripper 93 closes on a cartridge 38 after it is ejected from the cartridge drive 12 and holds the cartridge 38 as the pusher 91 moves back to pull the cartridge 38 back into its slot 40 in the magazine 30. There is additionally provided a method of sequentially loading cartridges 38 into a cartridge drive 12 using the novel cartridge loader 10.

摘要翻译： 本发明提供了一种与盒式驱动器12一起使用的新颖设计的自动盒装载器10.根据本发明的一个方面，提供了一种依次装载的盒装载器10，其允许无人值守的存储千兆字节的数据。 装载机适于附接到盒式驱动器12.本发明的新型装载机可以包括三个移动部件：钉仓30，推动器91和夹具93.每个移动部件都具有其自己的驱动马达80,94 盒子30具有多个槽40，用于保持装载到盒驱动器12中的盒38。本发明的推动器91与盒驱动器12对准，并将盒38推入盒驱动器12中。 夹持器93在盒38从盒驱动器12弹出之后关闭，并且当推动器91向后移动时保持盒38，以将盒38拉回到盒30中的狭槽40中。还提供了一种方法 使用新型墨盒装载机10将墨盒38顺序加载到墨盒驱动器12中。

公开(公告)号：US5172280A

公开(公告)日：1992-12-15

申请号：US428501

申请日：1989-10-26

申请人： John J. Quintus ,  Michael S. Sheehan ,  Tuong M. Vu

发明人： John J. Quintus ,  Michael S. Sheehan ,  Tuong M. Vu

IPC分类号： G11B5/008 ,  G11B5/035 ,  G11B5/09

CPC分类号： G11B5/035 ,  G11B5/00817 ,  G11B5/09

摘要： An apparatus and a method for calibrating the write current applied to a write head (110, 114) in a tape drive (100) finds the peak value of the write current applied to the tape head (110, 114) (i.e., the write current value providing the maximum read voltage amplitude on a tape (104)) by indirectly measuring the voltage sensed by a read head (112, 115). The apparatus includes a digital write current control circuit (170, 160) that applies a write current having a magnitude responsive to a digital write current value. An amplifier (190) in a read circuit (180, 182, 184, 190, 196) has a gain responsive to a digital read gain value. The method includes the steps of sampling the output of a pattern detector (146) (e.g., a gap detector) as the digital read gain value is adjusted for each of a number of digital write current data values applied to the write current control circuit (170, 160). The digital read gain value is adjusted to provide a predetermined range of the number of samples wherein the pattern corresponds to a predetermined pattern. The digital read gain value for each digital write current value is inversely related to the amplitude of the signal recorded on the tape (104). The sampled digital read voltage gain values are then stored. The digital write current value corresponding to the minimum stored digital read gain value also corresponds to the peak value of the actual write current. The digital write current value corresponding to the minimum digital read voltage gain value is then selected and stored as the calibrated digital write current.

公开(公告)号：US5163136A

公开(公告)日：1992-11-10

申请号：US436570

申请日：1989-11-13

申请人： Robert C. Richmond

发明人： Robert C. Richmond

IPC分类号： G06F3/06 ,  G11B20/10 ,  G11B20/12 ,  G11B20/18 ,  G11B27/28 ,  G11B27/30

CPC分类号： G06F3/0601 ,  G11B20/10 ,  G11B20/1883 ,  G11B27/3063 ,  G06F2003/0698 ,  G11B2220/90 ,  G11B2220/913

摘要： Apparatus and method for assembling data read from a data storage DAT tape into data groups. A tape data processing circuit responsive to the playback of DAT tape for provides for each frame a serial frame information output including a frame header and frame data, and an associated subcode information output, the subcode information output being available in advance of the associated frame information. A processor responsive to the subcode information checks the validity of the subcode information and determines the destination group memory locations of the associated frame data, such destination group memory locations being group frame locations specified pursuant to valid subcode information or temporary storage areas for frames having invalid subcode information. DMA circuitry transfers the frame data to the destination group memory locations. The processor further checks the error status of the stored frame data, verifies the group memory locations specified by the subcode information for frame data stored pursuant to valid subcode information, relocates frame data stored in temporary storage areas pursuant to frame location information contained in the frame headers under certain conditions, and updates a Bad Track Table to indicate the status of the received frame data stored in the group memory.

摘要翻译： 将从数据存储DAT磁带读取的数据组装成数据组的装置和方法。 一种磁带数据处理电路，其响应于DAT磁带的重放，为每个帧提供包括帧头和帧数据的串行帧信息输出以及相关的子代码信息输出，子代码信息输出在关联的帧信息之前可用 。 响应于子码信息的处理器检查子码信息的有效性并且确定相关联的帧数据的目的地组存储器位置，这样的目的地组存储器位置是根据有效子码信息指定的组帧位置或者具有无效帧的临时存储区域 子码信息。 DMA电路将帧数据传送到目的地组存储单元。 处理器进一步检查所存储的帧数据的错误状态，验证由根据有效子码信息存储的帧数据的子码信息指定的组存储器位置，根据包含在帧中的帧位置信息重新定位存储在临时存储区域中的帧数据 标题，并更新坏轨迹表以指示存储在组存储器中的接收帧数据的状态。

公开(公告)号：US4816932A

公开(公告)日：1989-03-28

申请号：US928472

申请日：1986-11-07

申请人： Robert H. Yates

发明人： Robert H. Yates

IPC分类号： G11B5/09 ,  G11B5/02

CPC分类号： G11B5/02

摘要： A write circuit for a streaming cartridge tape drive provides a substantially constant and symmetric write current to the magnetic write heads in the drive. The write current is provided by a pair of transistors coupled to the write head and the magnitude of the write current is maintained substantially constant by an operational amplifier coupled to the two write current transistors which regulates the voltage at the emitters of the two write current transistors.

公开(公告)号：US5375224A

公开(公告)日：1994-12-20

申请号：US116047

申请日：1993-09-02

申请人： Keith J. Larsen ,  Raymond W. Hall

发明人： Keith J. Larsen ,  Raymond W. Hall

IPC分类号： G06F3/06 ,  G11B20/10 ,  G11B20/12 ,  H03M5/14 ,  G06F11/00 ,  G06F12/00 ,  G06F13/00

CPC分类号： G06F3/0601 ,  G11B20/10 ,  G11B20/12 ,  H03M5/145 ,  G06F2003/0692

摘要： A raw data reader for reading a magnetic medium computer storage device wherein data is stored as binary bits, including a data conditioner responsive to the computer storage device for providing serial binary data representative of the binary data read from the magnetic medium and corresponding thereto on a one-to-one basis, a serial to parallel converter for providing parallel data that includes formatting control information contained in the serial binary data, a decoder for decoding the parallel data, and control circuitry responsive to the serial binary data and the formatting control information for transferring selected decoded data to the host computer.

摘要翻译： 一种用于读取磁性介质计算机存储装置的原始数据读取器，其中数据被存储为二进制位，包括响应于计算机存储装置的数据调节器，用于提供表示从磁介质读取并与其对应的二进制数据的串行二进制数据 一对一的基础，串行到并行转换器，用于提供包括串行二进制数据中包含的格式化控制信息的并行数据，用于解码并行数据的解码器以及响应于串行二进制数据和格式化控制信息的控制电路 用于将选择的解码数据传送到主计算机。

公开(公告)号：US5327059A

公开(公告)日：1994-07-05

申请号：US950457

申请日：1992-09-24

申请人： Van K. Truong ,  Edward H. Patrick ,  David E. Woodral

发明人： Van K. Truong ,  Edward H. Patrick ,  David E. Woodral

IPC分类号： G11B15/46 ,  G11B15/48 ,  G11B19/20 ,  G11B19/28 ,  H02P6/20 ,  H02P1/28 ,  H02P1/30

CPC分类号： H02P6/20 ,  G11B15/46 ,  G11B15/48 ,  G11B19/20 ,  G11B19/28

摘要： A system and apparatus for startup and speed regulation of low-inertia capstan motors under circumstances where the capstan load during startup may vary widely. A stiction handler provides dynamic control of the motor drive voltage imposed to overcome stationary friction, minimizing the power consumption on startup independently of variations in drag load or motor inertia. A stepped speed-up signal is applied to the motor instead of a conventional constant current-limited signal or sawtooth ramp signal. Motor speed regulation is imposed at each step of a stepped speed-up drive signal. This invention is particularly useful, for example, in low-power magnetic tape drives that must efficiently adapt to variations in drag between one tape cassette or cartridge and another.

摘要翻译： 在启动期间主导轴负载可能变化很大的情况下，用于启动和调速低惯性绞盘电机的系统和装置。 静态处理器可以动态地控制电机驱动电压，以克服固定摩擦，使启动时的功耗最小化，无论阻力负载或电机惯量的变化如何。 步进加速信号被施加到电动机，而不是传统的恒定电流限制信号或锯齿波形信号。 在步进加速驱动信号的每一步施加电机调速。 本发明在例如低功率磁带驱动器中特别有用，其必须有效地适应一个磁带盒或磁带盒与另一磁带盒之间的拖动变化。

公开(公告)号：US5267096A

公开(公告)日：1993-11-30

申请号：US838187

申请日：1992-02-18

申请人： William A. Buchan ,  Gregory A. Unruh ,  Yinyi Lin

发明人： William A. Buchan ,  Gregory A. Unruh ,  Yinyi Lin

IPC分类号： G11B5/09 ,  G11B20/10 ,  G11B27/36

CPC分类号： G11B20/10194 ,  G11B20/10009 ,  G11B20/10046 ,  G11B20/10481 ,  G11B27/36 ,  G11B5/09

摘要： A write equalization circuit that includes a data encoder for producing a binary data signal wherein a 1 is represented by a transition at the start of a bit interval and a 0 is represented by no transition at the start of a bit interval, and a nominal pulse generating circuit for producing nominal equalization pulses respectively synchronized with predetermined 0's in the binary signal. Adjusting circuitry responsive to the binary data signal and the nominal equalization pulses produces a write data signal that includes equalization pulses having a width and location in bit intervals that remain substantially constant with changes in component delays due to changing temperature and voltage, wherein the constant width and location of the equalization pulses are selected to achieve a predetermined suppression characteristic.

摘要翻译： 一种写均衡电路，包括用于产生二进制数据信号的数据编码器，其中a由位间隔开始时的转换表示，0表示在位间隔开始时无转换，标称脉冲 产生分别与二进制信号中的预定0相同步的标称均衡脉冲的电路。 响应于二进制数据信号和标称均衡脉冲的调节电路产生写入数据信号，该写入数据信号包括均匀脉冲，该均衡脉冲具有以比特间隔的宽度和位置，其随着温度和电压的变化而随分量延迟的变化而保持基本恒定，其中恒定宽度 并且选择均衡脉冲的位置以实现预定的抑制特性。