公开(公告)号：US20140126080A1

公开(公告)日：2014-05-08

申请号：US14156118

申请日：2014-01-15

Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION

Inventor： Nhan X. Bui ,  Eiji Ogura

IPC: G11B15/43

CPC classification number: G11B15/43 ,  B65H23/198 ,  G11B5/00821 ,  G11B5/584 ,  G11B15/46 ,  G11B15/52 ,  G11B15/54

Abstract: A method according to one embodiment includes receiving or determining primary velocity based on at least c of reading information encoded on a magnetic tape and a parameter associated with a motor of a drive mechanism. At a switching point, a reference velocity is made about equal to the primary velocity. After the switching point, the reference velocity is determined at various intervals. Also after the switching point, a value representative of a difference between the reference velocity and the primary velocity is determined, and a speed of the motor of the drive mechanism is adjusted for minimizing the difference between the reference velocity and the primary velocity. A system according to one embodiment includes a controller for controlling a drive mechanism, the controller being configured to perform the foregoing method.

Abstract translation: 根据一个实施例的方法包括基于至少c个编码在磁带上的读取信息和与驱动机构的电机相关联的参数来接收或确定主速度。 在切换点，使基准速度等于主速度。 在切换点之后，以各种间隔确定参考速度。 此外，在切换点之后，确定代表基准速度与一次速度之差的值，并且调节驱动机构的马达的速度以最小化参考速度和主速度之间的差。 根据一个实施例的系统包括用于控制驱动机构的控制器，所述控制器被配置为执行前述方法。

公开(公告)号：US20140063643A1

公开(公告)日：2014-03-06

申请号：US13600104

申请日：2012-08-30

Applicant: Nhan X. Bui ,  Eiji Ogura

Inventor： Nhan X. Bui ,  Eiji Ogura

IPC: G11B15/46 ,  G11B5/008

CPC classification number: G11B15/43 ,  B65H23/198 ,  G11B5/00821 ,  G11B5/584 ,  G11B15/46 ,  G11B15/52 ,  G11B15/54

Abstract: In one embodiment, a system includes a controller configured to: determine a reference velocity at various intervals, receive or determine a secondary velocity based at least in part on a parameter associated with a drive mechanism motor, determine a value representative of a difference between the reference velocity and secondary velocity, adjust a speed of the motor of the drive mechanism for minimizing the difference between the reference velocity and secondary velocity, receive/determine a primary velocity based on reading information encoded on a magnetic tape, at a switching point, make the reference velocity about equal to the primary velocity, after the switching point, determine the reference velocity at various intervals, after the switching point, determine a value representative of a difference between the reference velocity and primary velocity, and adjust the speed of the motor of the drive mechanism for minimizing the difference between the reference velocity and primary velocity.

Abstract translation: 在一个实施例中，系统包括控制器，其被配置为：至少部分地基于与驱动机构电动机相关联的参数来确定不同间隔的参考速度，接收或确定二次速度，确定代表 参考速度和二次速度，调整驱动机构的电机的速度，以最小化参考速度和次速之间的差异，基于读取在磁带上编码的信息，在切换点处接收/确定主速度，使 在切换点之后，参考速度约等于主速度，在切换点之后确定不同间隔的参考速度，确定代表参考速度和主速度之差的值，并调整电机的速度 用于最小化参考速度和初级之间的差的驱动机构 速度

公开(公告)号：US20050061845A1

公开(公告)日：2005-03-24

申请号：US10939817

申请日：2004-09-13

Applicant: Klaus Anderle ,  Klaus Conrad

Inventor： Klaus Anderle ,  Klaus Conrad

IPC: G03B1/04 ,  G11B15/54 ,  H04N3/38 ,  H04N9/11 ,  B65H23/182

CPC classification number: G03B1/04 ,  G11B15/54 ,  H04N3/38 ,  H04N9/11

Abstract: The transport apparatus has a device for determining the transport speed of a tape-type medium. A linear array sensor is provided, which extends along the transport direction. Furthermore, means are provided in order to image a region of the medium onto the linear array sensor. A signal processing circuit connected to the linear array sensor determines the transport speed of the medium from the output signals of the linear array sensor.

Abstract translation: 输送装置具有用于确定带式介质的输送速度的装置。 提供了沿输送方向延伸的线性阵列传感器。 此外，提供了将介质的区域成像到线性阵列传感器上的装置。 连接到线性阵列传感器的信号处理电路根据线性阵列传感器的输出信号确定介质的传送速度。

公开(公告)号：US06836386B2

公开(公告)日：2004-12-28

申请号：US10241510

申请日：2002-09-12

Applicant: John Alexander Koski

Inventor： John Alexander Koski

IPC: G11B1552

CPC classification number: G11B15/54

Abstract: Calibration logic separately operates DC motors of a tape drive at a steady state estimated velocity (Omega C) for at least one full revolution without a tape; senses Hall sensor(s) to indicate a full revolution of each motor, measuring the time of the full revolution; determines the actual velocity (Omega A) of each motor employing the measured time; compares Omega C to Omega A to determine a calibration constant (K calib) for each motor; to calibrate the motor velocity of each motor, for determining the velocity for a mounted tape by averaging the tape velocity generated by each motor based on the calibrated motor velocity.

Abstract translation: 校准逻辑以固定的估计速度（Ω-C）将带驱动器的直流电动机分别运行至少一整圈而无需磁带; 感测霍尔传感器以指示每个电机的全转，测量完全旋转的时间; 使用测量时间确定每台电机的实际速度（Ω-A） 将Omega C与Omega A进行比较，以确定每台电机的校准常数（K calib）; 以校准每个电机的电机速度，以通过基于校准的电动机速度平均由每个电动机产生的磁带速度来确定安装的磁带的速度。

公开(公告)号：US20040051991A1

公开(公告)日：2004-03-18

申请号：US10241510

申请日：2002-09-12

Applicant: International Business Machines Corporation

Inventor： John Alexander Koski

IPC: G11B015/52

CPC classification number: G11B15/54

Abstract: Calibration logic separately operates DC motors of a tape drive at a steady state estimated velocity (Omega C) for at least one full revolution without a tape; senses Hall sensor(s) to indicate a full revolution of each motor, measuring the time of the full revolution; determines the actual velocity (Omega A) of each motor employing the measured time; compares Omega C to Omega A to determine a calibration constant (K calib) for each motor; to calibrate the motor velocity of each motor, for determining the velocity for a mounted tape by averaging the tape velocity generated by each motor based on the calibrated motor velocity.

公开(公告)号：US20040027710A1

公开(公告)日：2004-02-12

申请号：US10415905

申请日：2003-05-05

Inventor： Hideyo Shibata

IPC: G11B005/02

CPC classification number: G11B15/4677 ,  G11B7/00 ,  G11B15/1875 ,  G11B15/54

Abstract: Track thinning at an IN point of consecutive recording is prevented by doing a head-track one-edge coincidence tracking by using a head of a larger width than the track width. ATF control means (15) makes a control during reproduction of pre-roll of consecutive recording according to a pilot signal out of the reproduction output from heads (1a, 1c) so that centers of the heads (1a, 1c) may scan the center line of the track. A positioning signal (6g) during the control and a phase of HSW are detected by a detecting circuit (16), and a desired phase having a predetermined advanced amount is set by a desired phase setting means (18) and stored in a storage unit (19). After this, a tracking method switching control unit (23) switches the tracking method into another by which a control unit (20) controls the difference in phase between the positioning signal (6g) and the HSW to a desired value stored in the storage unit (19).

Abstract translation: 通过使用宽度大于磁道宽度的磁头进行头轨一次边缘重合跟踪来防止在连续记录的IN点处的轨迹变薄。 ATF控制装置（15）根据从头（1a，1c）的再现输出中的导频信号在再现连续记录的前贴片期间进行控制，使得头部（1a，1c）的中心可以扫描中心 线的线。 在控制期间的定位信号（6g）和HSW的相位由检测电路（16）检测，并且具有预定提前量的期望相位由期望的相位设置装置（18）设置并存储在存储单元 （19）。 之后，跟踪方式切换控制单元（23）将跟踪方法切换到另一个控制单元（20），通过该方法控制单元（20）将定位信号（6g）和HSW之间的相位差控制到存储在存储单元 （19）。

公开(公告)号：US06565029B2

公开(公告)日：2003-05-20

申请号：US09885660

申请日：2001-06-20

Applicant: James Zweighaft ,  David B. Daniel

Inventor： James Zweighaft ,  David B. Daniel

IPC: G11B1546

CPC classification number: G11B15/54 ,  G11B15/093 ,  G11B15/43 ,  G11B23/107

Abstract: A method for detecting slippage in a tape path, and re-calibrating a sensing assembly in a tape storage device to account for the slippage. The method includes sensing a position of one of a supply reel and a take-up reel. In response to sensing the position of the supply reel or take-up reel, sensing a position of a guide roller. The position of the guide roller corresponds to the position of the guide roller when the position of the supply reel or the take-up reel is sensed. In response to sensing the position of the guide roller, the tape media is wound through the tape path between the supply reel and the take-up reel. In response to winding the tape media through the tape path, a second position of the one of the supply reel and the take-up reel is sensed. In response to sensing the second position of the one of the supply reel and the take-up reel, a second position of the guide roller is sensed. The second position of the guide roller corresponds to the position of the guide roller when the second position of the one of the supply reel or the take-up reel is sensed. In response to sensing the second position of the guide roller, a position difference between the first position of the guide roller and the second position of the guide roller is determined. The position difference is compared to a previous position difference to determine a relative difference in position, which is used to detect slippage.

公开(公告)号：US06381400B1

公开(公告)日：2002-04-30

申请号：US09116322

申请日：1998-07-15

Applicant: Young-gi Kwon ,  Jong-gyu Lee

Inventor： Young-gi Kwon ,  Jong-gyu Lee

IPC: H04N591

CPC classification number: G11B15/54 ,  G11B15/46 ,  G11B15/4673

Abstract: A method for controlling the speed of a capstan motor in a video cassette recorder (VCR) includes modulating a capstan frequency generating (CFG) signal into a pulse signal. Time intervals corresponding to one of a rising edge to a next rising edge and a falling edge to a next falling edge of the pulse signal are calculated. The calculated time intervals are compared to a target time to obtain a difference therebetween. A rotation speed of the capstan motor is compensated based on the obtained difference to control the rotation speed of the capstan motor.

Abstract translation: 用于控制录像机（VCR）中的主导轴马达的速度的方法包括将主导轴频率产生（CFG）信号调制成脉冲信号。 计算对应于脉冲信号的上升沿到下一个上升沿和下降沿之一的时间间隔。 将所计算的时间间隔与目标时间进行比较以获得它们之间的差。 基于获得的差值来补偿主导轴马达的转速，以控制主导轴马达的转速。

公开(公告)号：US06275348B1

公开(公告)日：2001-08-14

申请号：US09126992

申请日：1998-07-31

Applicant: Robert Edward Walsh

Inventor： Robert Edward Walsh

IPC: G11B1546

CPC classification number: G11B15/54 ,  G11B15/48

Abstract: A magnetic tape recording/playback apparatus, and a method of operating the apparatus, which minimises or eliminates the tape damage which is caused by the tape-driving capstan spinning and skidding across the tape at start-up. Initial acceleration of the capstan is held to a relatively low level when capstan speed is below a predetermined value and capstan acceleration is at a higher level at capstan speeds above said predetermined value. Intermediate levels of capstan acceleration can be set for intermediate speeds.

Abstract translation: 一种磁带记录/重放装置，以及操作该装置的方法，其最小化或消除了由启动时的磁带驱动主导轴旋转和打滑而导致的磁带损坏。 当绞盘速度低于预定值时，主导轴的初始加速度保持在相对较低的水平，主导轴加速度在主轴速度高于所述预定值时处于较高水平。 可以为中间速度设置中等级别的主导轴加速度。

公开(公告)号：US06227476B1

公开(公告)日：2001-05-08

申请号：US09378304

申请日：1999-08-20

Applicant: Katsuhiro Morisada

Inventor： Katsuhiro Morisada

IPC: G11B1546

CPC classification number: G11B15/46 ,  G11B15/05 ,  G11B15/54

Abstract: A take-up reel sensor measures a rotation cycle of a take-up reel of a loaded tape cassette in a take-up operation. A changing rate calculating section calculates a changing rate of the rotation cycle measured by the take-up reel sensor. A type discriminating section discriminates the tape cassette as a thick hub type or a thin hub type based on the rotation cycle measured by the take-up reel sensor, while it discriminates the tape cassette as the thin hub type or a VHS-C type based on the changing rate calculated by the changing rate calculating section. A system controller conducts a high speed take-up mode suitable for the type of the tape cassette discriminated by the type discriminating section. Accordingly, the take-up mode can be controlled by employing only the rotation cycle of the take-up reel.

Abstract translation: 卷取卷轴传感器在卷取操作中测量装入的盒式磁带的卷取卷轴的旋转周期。 变化率计算部分计算由卷取传感器测量的旋转周期的变化率。 A型识别部基于由卷带盘传感器测量的旋转周期将盒式磁带识别为厚型轮毂型或薄型轮毂型，同时将带盒识别为薄型轮毂型或VHS-C型 关于由变化率计算部分计算的变化率。 系统控制器执行适合于由类型识别部分辨别的盒式磁带的类型的高速拾取模式。 因此，可以通过仅采用卷取卷轴的旋转周期来控制卷取模式。