公开(公告)号：US07038417B1

公开(公告)日：2006-05-02

申请号：US11065705

申请日：2005-02-23

Applicant: Kempton William Redhead ,  David James Brecht

Inventor： Kempton William Redhead ,  David James Brecht

IPC: G11B5/02

CPC classification number: G11B15/18 ,  G11B15/26 ,  H02P23/14

Abstract: Ascertaining through integration a bias calibration level for a current control loop of a driver motor of a tape drive. The driver motor includes a current controller having as inputs a demand signal, a bias signal, and a feedback signal. The current controller includes an integrator coupled to the output. The method includes setting the demand signal to a zero current level, setting the bias signal to a level that substantially prevents the integrator from driving itself high, stepping down the bias signal to form a stepped down bias signal, measuring a sense parameter at the output of the current controller, determining whether the sense parameter is high for the stepped down bias signal, and setting the bias calibration level to a level sufficiently above the stepped down bias signal such that the integrator is not driven high when the demand signal is set to the zero current level.

Abstract translation: 通过集成确定磁带驱动器的驱动器电机的电流控制回路的偏置校准电平。 驱动器电动机包括具有作为输入的需求信号，偏置信号和反馈信号的电流控制器。 电流控制器包括耦合到输出的积分器。 该方法包括将需求信号设置为零电流电平，将偏置信号设置为基本上防止积分器自身驱动的水平，降低偏置信号以形成降压偏置信号，测量输出端的感测参数 确定对于降压偏置信号的感测参数是否高，以及将偏置校准电平设置为足够高于降压偏置信号的电平，使得当需求信号被设置为高电平时积分器不被驱动为高电平 零电流电平。

公开(公告)号：US06637691B1

公开(公告)日：2003-10-28

申请号：US09864282

申请日：2001-05-25

Applicant: John Anthony Hamming ,  Robert Ralph Heinze ,  Scott Louis Hanson ,  Kempton William Redhead ,  Walter Fehlmann ,  Russell Allen Bauer ,  Turguy Goker

Inventor： John Anthony Hamming ,  Robert Ralph Heinze ,  Scott Louis Hanson ,  Kempton William Redhead ,  Walter Fehlmann ,  Russell Allen Bauer ,  Turguy Goker

IPC: G11B1566

CPC classification number: G11B23/113 ,  G11B15/67 ,  G11B23/107

Abstract: A method and apparatus for loading tape from a single reel tape cartridge into a take-up reel. The hub filler is securely and releaseably attached to the take-up reel upon the hub filler entering the take-up reel. This attachment provides adequate securement between the hub filler and the take-up reel for the tape to be wrapped around the take-up reel during loading of the tape without the hub filler partially ejecting from the take-up reel. By preventing the hub filler from partially ejecting from the take-up reel, damage to the tape and the tape drive loading mechanism is mitigated. Upon unloading of the tape from the tape drive, the hub filler can be readily released from its attachment to the take-up reel.

Abstract translation: 一种用于将卷带从单个卷带盒装入收纸卷轴的方法和装置。 当轮毂填料进入卷取卷轴时，轮毂填料可靠地和可释放地连接到卷取卷轴上。 这种附件提供了轮毂填充器和卷取卷轴之间的适当固定，以便在加载带的过程中将带缠绕在卷取卷轴周围，而轮毂填料部分地不会从卷取卷轴上弹出。 通过防止轮毂填料从卷取卷轴部分地排出，减轻了带和带驱动装载机构的损坏。 当磁带从磁带驱动器卸下时，轮毂填料可以容易地从附件释放到卷取卷轴上。