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21. 发明授权

US06525895B2 Reproducing apparatus 失效
标题翻译：再现装置
公开(公告)号：US06525895B2
公开(公告)日：2003-02-25
申请号：US08625100
申请日：1996-04-01
申请人： Tetsuya Wakui
发明人： Tetsuya Wakui
IPC分类号： G11B1512
CPC分类号： G11B15/087 , G11B5/0086 , G11B20/24
摘要： A reproducing apparatus for reproducing an information signal recorded on a recording medium is provided with a reproducing part arranged to reproduce the information signal recorded on the recording medium and to output the reproduced information signal, a muting circuit for muting the information signal outputted from the reproducing part, a detecting circuit for detecting the level of a noise component included in the information signal outputted from the reproducing part, and a control part for controlling a muting action of the muting circuit on the basis of a result of detection provided by the detecting circuit. These parts in combination enable the reproducing apparatus to reproduce the information signal without generating any noise component, in a minimal length of time after the commencement of reproduction.
摘要翻译：用于再现记录在记录介质上的信息信号的再现装置设置有再现部分，其被布置为再现记录在记录介质上的信息信号，并输出再现的信息信号;静音电路，用于使从再现信号输出的信息信号变暗检测电路，用于检测包含在从再现部分输出的信息信号中的噪声分量的电平;以及控制部分，用于根据由检测电路提供的检测结果来控制静噪电路的静噪动作。这些部件组合使得再现装置能够在再现开始后的最短时间内再现信息信号而不产生任何噪声分量。

22. 发明授权

US06501609B2 Method and apparatus for driving actuator of storage disk device 失效
标题翻译：用于驱动存储盘装置的执行器的方法和装置
公开(公告)号：US06501609B2
公开(公告)日：2002-12-31
申请号：US09206525
申请日：1998-12-07
申请人： Tomoaki Saito , Tatsuya Gofuku
发明人： Tomoaki Saito , Tatsuya Gofuku
IPC分类号： G11B1512
CPC分类号： G11B5/5521 , G11B5/022 , G11B5/5547
摘要： An actuator driving method and an actuator driving device for PWM-driving an actuator of a storage disk device are disclosed. This method and device prevent a servo signal from being overlapped with switching noises. The storage disk device includes a head for reading information from a storage disk, a PWM driver for generating a drive current having a pulse width corresponding to a current indication value, a linear driver for generating a drive current of which a magnitude corresponds to the current indication value, an actuator, driven by the drive current, for moving the head, and a control circuit for generating the current indication value for positioning the head from the servo information read by the head from the storage disk. The driving method includes a step of PWM-driving the actuator by the PWM driver, and a step of effecting a switchover from the PWM drive to a linear drive by the linear driver during a period for which the control circuit reads the servo information.
摘要翻译：公开了一种致动器驱动方法和用于PWM驱动存储盘装置的致动器的致动器驱动装置。该方法和装置防止伺服信号与开关噪声重叠。存储盘装置包括用于从存储盘读取信息的头，用于产生具有与当前指示值相对应的脉冲宽度的驱动电流的PWM驱动器，用于产生幅度对应于电流的驱动电流的线性驱动器指示值，由驱动电流驱动的致动器，用于移动头部;以及控制电路，用于产生用于从头部从存储盘读取的伺服信息来定位头部的当前指示值。该驱动方法包括通过PWM驱动器对致动器进行PWM驱动的步骤，以及在控制电路读取伺服信息的期间内通过线性驱动器将PWM驱动器切换到线性驱动的步骤。

23. 发明授权

US06388830B1 Head switching operation utilizing an automatic dummy load 失效
标题翻译：利用自动虚拟负载进行头切换操作
公开(公告)号：US06388830B1
公开(公告)日：2002-05-14
申请号：US09365050
申请日：1999-07-30
申请人： Robert Matousek , Timothy T. Walker
发明人： Robert Matousek , Timothy T. Walker
IPC分类号： G11B1512
CPC分类号： G11B15/12 , G11B5/012 , G11B19/04 , G11B2005/0013
摘要： Apparatus and method for a head switching operation utilizing an automatic dummy load in a disc drive. A preamplifier circuit sequentially selects head positions and applies corresponding bias currents. A sequence control circuit automatically diverts the path of a first bias current from a head selection circuit to a dummy load after detecting an input of a second head location value into a buffer, and before the input is complete. After a bias current value for the second head is written into the buffer, the sequence control automatically deasserts the path to the dummy load after a predetermined time interval. The second bias current is then applied to the second head.
摘要翻译：利用磁盘驱动器中的自动虚拟负载进行磁头切换操作的装置和方法。前置放大器电路依次选择磁头位置并施加相应的偏置电流。在检测到第二头位置值的输入到缓冲器之后，以及在输入完成之前，顺序控制电路将第一偏置电流的路径自头部选择电路转移到虚拟负载。在将第二磁头的偏置电流值写入缓冲器之后，顺序控制在预定的时间间隔之后自动地去除虚拟负载的路径。然后将第二偏置电流施加到第二头。

24. 发明授权

US06331920B1 Backward compatible head and head positioning assembly for a linear digital tape drive 失效
公开(公告)号：US06331920B1
公开(公告)日：2001-12-18
申请号：US09685418
申请日：2000-10-10
申请人： Laurence J. Albrecht , George A. Saliba
发明人： Laurence J. Albrecht , George A. Saliba
IPC分类号： G11B1512
CPC分类号： G11B15/125 , G11B5/00878 , G11B5/4893
摘要： A tape recording and playback unit records and reads back data from tape either in a high track density standard format or alternatively reads back data from a tape previously recorded on another unit in accordance with a previous low density standard track format. The unit includes a primary head positioning mechanism for positioning a primary multi-channel write/read head and a secondary head positioning mechanism for positioning a secondary read-only head. The secondary head may be positioned angularly to read longitudinal and azimuth track patterns, and also to be retracted when not needed.

25. 发明授权

US06249397B1 Device for reading and writing data on magnetic recording layer of photo film 失效
标题翻译：摄影胶片磁记录层读写数据的装置
公开(公告)号：US06249397B1
公开(公告)日：2001-06-19
申请号：US08867588
申请日：1997-06-02
申请人： Wataru Sasaki
发明人： Wataru Sasaki
IPC分类号： G11B1512
CPC分类号： G11B15/125 , G03B17/24 , G03B2217/244 , G11B5/008 , G11B5/02 , G11B15/026
摘要： A magnetic read-write device with a magnetic head consisting of a core and a coil. The read-write device is incorporated into in a camera. A writing circuit is connected directly and in parallel to the coil, for driving the coil with writing current in a writing mode for writing binary code data on a magnetic recording layer provided on photo film. The writing circuit has a pair of write control switches which are turned ON and OFF alternately to each other, to apply the writing current to the coil in alternating directions. An amplification circuit is also connected directly and in parallel to the coil. The amplification circuit amplifies signal voltage induced between terminals of the coil in a reading mode for reading binary code data from the magnetic recording layer, to output a reproduction signal. A switching transistor is connected in a line through which a drive voltage is supplied to the amplification circuit. In the writing mode, the switching transistor is turned OFF to deactivate the amplification circuit. In the reading mode, the switching transistor is turned ON, and the write control switches are turned OFF.
摘要翻译：具有由磁芯和线圈组成的磁头的磁读写装置。读写装置并入相机中。写入电路直接并联连接到线圈，用于以写入模式驱动具有写入电流的线圈，用于将二进制码数据写入到在胶片上提供的磁记录层上。写入电路具有彼此交替地导通和截止的一对写入控制开关，以便在交替的方向上向线圈施加写入电流。放大电路也直接与线圈并联连接。放大电路在用于从磁记录层读取二进制码数据的读取模式中放大在线圈的端子之间感应的信号电压，以输出再现信号。开关晶体管连接在驱动电压被提供给放大电路的一行中。在写入模式下，开关晶体管截止以使放大电路去激活。在读取模式下，开关晶体管导通，写控制开关断开。

26. 发明授权

US06233109B1 Magnetic tape drive having a set of heads configured such that at least one of the heads reads a desired data track 有权
标题翻译：磁带驱动器具有一组头部，其被配置成使得至少一个头部读取期望的数据轨道
公开(公告)号：US06233109B1
公开(公告)日：2001-05-15
申请号：US09228099
申请日：1999-01-11
申请人： Hartvig E. Melbye
发明人： Hartvig E. Melbye
IPC分类号： G11B1512
CPC分类号： G11B15/125
摘要： Proper coverage of data tracks of a magnetic tape in a magnetic tape drive is ensured by providing a head assembly having a set of read heads configured such that at least one of the read heads reads a desired data track as the magnetic tape moves across the head assembly. At least one of the read heads reads the desired data track by creating lateral differential motion of the head assembly with respect to the longitudinally extending data tracks of the magnetic tape. The differential motion is either created by tracking irregularities between the head assembly and the magnetic tape or by dithering or wobbling the head assembly with respect to the magnetic tape. In operation, a controller selects one of the read data signals generated by the read heads to generate a read back signal. The read back signal is the read data signal from the at least one of the two read heads reading the desired data track.
摘要翻译：通过提供具有一组读取头的头组件来确保对磁带驱动器中的磁带的数据轨道的适当覆盖，该组头读取头被配置为使得当磁带移动穿过头部时，读取头中的至少一个读取期望的数据轨迹部件。读头中的至少一个通过产生磁头组件相对于磁带的纵向延伸的数据磁道的横向差分运动来读取所需的数据磁道。通过跟踪磁头组件和磁带之间的不规则性或通过使磁头组件相对于磁带抖动或摆动来产生微分运动。在操作中，控制器选择读头产生的读数据信号之一以产生回读信号。读回信号是来自读取期望数据磁道的两个读取头中的至少一个读取数据信号。

27. 发明授权

US06188532B1 Backward compatible head and head positioning assembly for a linear digital tape drive 有权
标题翻译：用于线性数字磁带驱动器的向后兼容头和头定位组件
公开(公告)号：US06188532B1
公开(公告)日：2001-02-13
申请号：US09149733
申请日：1998-09-08
申请人： Laurence J. Albrecht , George A. Saliba
发明人： Laurence J. Albrecht , George A. Saliba
IPC分类号： G11B1512
CPC分类号： G11B15/125 , G11B5/00878 , G11B5/4893
摘要： A tape recording and playback unit records and reads back data from tape either in a high track density standard format or alternatively reads back data from a tape previously recorded on another unit in accordance with a previous low density standard track format. The unit includes a primary head positioning mechanism for positioning a primary multi-channel write/read head and a secondary head positioning mechanism for positioning a secondary read-only head. The secondary head may be positioned angularly to read longitudinal and azimuth track patterns, and also to be retracted when not needed.
摘要翻译：磁带记录和重放单元以高轨道密度标准格式从磁带记录和读回数据，或者根据先前的低密度标准轨道格式从先前记录在另一个单元上的磁带读回数据。该单元包括用于定位主要多通道写入/读取头的主要头部定位机构和用于定位第二只读头部的次级头部定位机构。次级头部可以成角度地定位以读取纵向和方位轨迹图案，并且还可以在不需要时缩回。

28. 发明授权

US06639747B2 Signal recording and reproducing method and signal recording and reproducing unit 失效
标题翻译：信号记录和再现方法以及信号记录和再现单元
公开(公告)号：US06639747B2
公开(公告)日：2003-10-28
申请号：US09365949
申请日：1999-08-02
申请人： Hiroyuki Asakura , Hideaki Kondo
发明人： Hiroyuki Asakura , Hideaki Kondo
IPC分类号： G11B1512
CPC分类号： G11B5/5921 , G11B5/584 , G11B7/00
摘要： The present invention relates to a signal recording and reproducing method used for video tape recorder. An erasing position precedes a recording position and a reproducing position precedes the erasing position. By using a period when reproducing does not reproduce a signal recorded on a track of a tape-like storage medium, the period occurring during recording and reproducing operation, recording apparatus records a signal on a recording track or erasing apparatus erases a signal recorded on a recording track. Hereby, if a signal recorded on a recording track of the tape-like storage medium is processed and replaced, the signal recorded on the recording track of the tape-like storage medium can be satisfactorily reproduced without being influenced by signal recording operation and signal erasing operation.
摘要翻译：本发明涉及用于录像机的信号记录和再现方法。擦除位置在记录位置之前，再现位置在擦除位置之前。通过使用再现时的周期不再现记录在带状存储介质的轨道上的信号，记录和再现操作期间的记录装置将记录信号记录在记录磁迹或擦除装置上，录音轨因此，如果记录在带状存储介质的记录轨道上的信号被处理和替换，则可以令人满意地再现记录在带状存储介质的记录轨道上的信号，而不受信号记录操作和信号擦除的影响操作。

29. 发明授权

US06587296B1 Capacitor bias recovery methodology 有权
标题翻译：电容偏置恢复方法
公开(公告)号：US06587296B1
公开(公告)日：2003-07-01
申请号：US09621200
申请日：2000-07-21
申请人： Echere Iroaga , Ashish Manjrekar , Bryan E. Bloodworth
发明人： Echere Iroaga , Ashish Manjrekar , Bryan E. Bloodworth
IPC分类号： G11B1512
CPC分类号： G11B5/4984
摘要： A preamplifier circuit for a hard disk drive system comprises a preamplifier circuit having a bias voltage circuit stage associated therewith. The preamplifier circuit further comprises a current bias boost recovery circuit operatively coupled to the bias voltage circuit stage which is configured to increase a rate of charging of a noise reduction capacitor associated with the bias voltage circuit stage. A head select boost recovery circuit is also operatively coupled to the bias voltage circuit and is configured to increase a rate of charging or discharging of a bias capacitor associated with the bias voltage circuit stage. Together the circuits allow for a concurrent head switch and current bias switch and avoids the problems associated with the prior art.
摘要翻译：用于硬盘驱动系统的前置放大器电路包括具有与其相关联的偏置电压电路级的前置放大器电路。前置放大器电路还包括可操作地耦合到偏置电压电路级的电流偏置升压恢复电路，其被配置为增加与偏置电压电路级相关联的降噪电容器的充电速率。头部选择升压恢复电路还可操作地耦合到偏置电压电路，并且被配置为增加与偏置电压电路级相关联的偏置电容器的充电或放电的速率。这些电路一起允许同时的头开关和电流偏置开关，并且避免了与现有技术相关的问题。

30. 发明授权

US06411454B1 Head control for disc drive apparatuses, systems and processes 有权
标题翻译：磁盘驱动装置，系统和进程的磁头控制
公开(公告)号：US06411454B1
公开(公告)日：2002-06-25
申请号：US09259837
申请日：1999-03-01
申请人： Albert D. Monroe, III
发明人： Albert D. Monroe, III
IPC分类号： G11B1512
CPC分类号： G11B5/4976 , G11B5/4886 , G11B21/00
摘要： A method of associating data with a plurality of heads in a disc drive apparatus employs heads disposed in physical locations in a head array. A plurality of data sets are provided, wherein each data set is associated with an address corresponding to the physical location of a respective head in the head array. In addition, the number of heads in the disc drive apparatus is determined and, based on the number of heads, a new head location scheme is selected. The new head location scheme defines a new head location for each physical head location address. Each data set is then associated with the new head location associated, in the new head location scheme, with the physical head location address associated with the data set.
摘要翻译：将数据与盘驱动装置中的多个磁头相关联的方法使用设置在磁头阵列中的物理位置的磁头。提供了多个数据组，其中每个数据集与对应于头部阵列中相应头部的物理位置的地址相关联。此外，确定了盘驱动装置中的磁头数量，并且根据磁头的数量，选择了新的磁头定位方案。新的头位置方案为每个物理头位置地址定义新的头位置。然后，每个数据集与新的头部位置方案中的与与数据集相关联的物理头部位置地址相关联的新的头部位置相关联。

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