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1. 发明授权

US06791800B2 Device for suppressing magnetic noise of dual-layered disk in a disk drive 有权
标题翻译：用于抑制磁盘驱动器中双层磁盘的磁噪声的装置
公开(公告)号：US06791800B2
公开(公告)日：2004-09-14
申请号：US09943087
申请日：2001-08-31
申请人： Akihiko Takeo , Yoichiro Tanaka
发明人： Akihiko Takeo , Yoichiro Tanaka
IPC分类号： G11B500
CPC分类号： G11B5/581
摘要： There is disclosed a disk drive having a magnetic device for applying a direct current magnetic field to the disk 1 by using a disk with a double-layered structure in which a soft magnetic layer is provided on a lower layer of the recording magnetic layer. The magnetic device generates a direct current magnetic field to uniform a magnetic domain state of the soft magnetic layer of the disk. The intensity of the direct current is larger than the anisotropic magnetic field of the soft magnetic layer and is smaller than the coercive force of the recording magnetic layer. As a consequence, the stabilization of the magnetic domain state of the soft magnetic layer of the disk can be realized to make an attempt of decreasing the magnetic noise and establishing stabilization with respect to the disturbance magnetic field.
摘要翻译：公开了一种磁盘驱动器，其具有用于通过使用其中在记录磁性层的下层上提供软磁性层的双层结构的盘将直流磁场施加到盘1的磁性装置。磁性装置产生直流磁场以使磁盘的软磁性层的磁畴状态均匀。直流电流的强度大于软磁性层的各向异性磁场，并且小于记录磁性层的矫顽力。结果，可以实现磁盘的软磁性层的磁畴状态的稳定化，从而试图减小磁噪声并建立相对于扰动磁场的稳定性。

2. 发明授权

US06781784B2 Reading tape with transverse distortion 有权
标题翻译：读带带横向变形
公开(公告)号：US06781784B2
公开(公告)日：2004-08-24
申请号：US09834233
申请日：2001-04-13
申请人： David L. Peterson
发明人： David L. Peterson
IPC分类号： G11B500
CPC分类号： G11B5/584
摘要： Magnetic tape experiencing transverse distortion may be read by selecting between longitudinally offset read elements to read a data track. The read elements are part of a tape head having an azimuth angle relative to the tape which creates a transverse offset between the data read elements. This transverse offset is exploited to minimize the effects of any transverse tape distortion.
摘要翻译：可能通过选择纵向偏移读取元件来读取数据轨迹来读取遇到横向失真的磁带。读取元件是具有相对于磁带的方位角的磁带头的一部分，其在数据读取元件之间产生横向偏移。这种横向偏移被用来最小化任何横向带失真的影响。

3. 发明授权

US06549000B2 Semiconductor device testing apparatus having timing hold function 失效
标题翻译：具有定时保持功能的半导体器件测试装置
公开(公告)号：US06549000B2
公开(公告)日：2003-04-15
申请号：US10205742
申请日：2002-07-26
申请人： Koichi Ebiya
发明人： Koichi Ebiya
IPC分类号： G11B500
CPC分类号： G01R31/3191
摘要： There is provided a semiconductor device testing apparatus capable of greatly decreasing an interrupted time of a testing even if a board on which a test pattern supply path and/or a strobe pulse supply path is provided is replaced. A signal propagation delay time of the test pattern supply path through which a test pattern signal is supplied to a semiconductor device under test and a signal propagation delay time of the strobe pulse supply path through which a strobe pulse is supplied to a signal read circuit reading therein a logical value of a response signal outputted from the semiconductor device under test are measured respectively, and differences between the measured respective values and predetermined corresponding delay times are found respectively. The obtained time differences are stored as delay correcting data in a non-volatile memory or corresponding non-volatile memories.
摘要翻译：即使替换了设置了测试图案供给路径和/或选通脉冲供给路径的基板，也能够大幅度地减少测试中断时间的半导体装置测试装置。将测试图案信号通过其提供给被测半导体器件的测试图案供给路径的信号传播延迟时间和选通脉冲供给路径的信号传播延迟时间，通过该延迟时间将选通脉冲提供给信号读取电路读取其中分别测量从被测半导体器件输出的响应信号的逻辑值，分别找出所测量的各个值和预定相应的延迟时间之间的差。将获得的时间差作为延迟校正数据存储在非易失性存储器或相应的非易失性存储器中。

4. 发明授权

US06299507B1 Thin-film magnetic head manufacturing method and apparatus 有权
公开(公告)号：US06299507B1
公开(公告)日：2001-10-09
申请号：US09488694
申请日：2000-01-20
申请人： Masato Katoh , Shigenobu Miyajima
发明人： Masato Katoh , Shigenobu Miyajima
IPC分类号： G11B500
CPC分类号： G11B5/3903 , G11B5/1871 , G11B5/3166 , G11B5/3169 , G11B5/3173 , G11B33/10 , Y10T29/49034 , Y10T29/49041
摘要： In a thin-film magnetic head manufacturing method and apparatus, lapping is continued until the MR height of a magnetoresistive sensor falls into a finish tolerance range and the lapping time from the beginning of lapping exceeds a predetermined time, thereby substantially reducing the recession between an ABS of a slider bar and a surface of a thin-film magnetic element opposing a recording medium.

5. 发明授权

US06278564B1 Digital transmission signal processing system and recording/reproducing system 失效
标题翻译：数字传输信号处理系统和记录/再现系统
公开(公告)号：US06278564B1
公开(公告)日：2001-08-21
申请号：US09567005
申请日：2000-05-09
申请人： Hideo Arai , Hitoaki Owashi , Kyoichi Hosokawa , Keizo Nishimura , Yoshizumi Watatani , Akira Shibata
发明人： Hideo Arai , Hitoaki Owashi , Kyoichi Hosokawa , Keizo Nishimura , Yoshizumi Watatani , Akira Shibata
IPC分类号： G11B500
CPC分类号： H04N5/926 , G11B5/00839 , G11B5/0086 , G11B5/09 , G11B15/00 , G11B15/1808 , G11B15/1875 , G11B15/4671 , G11B15/4673 , G11B20/00007 , G11B20/10527 , G11B20/18 , G11B27/005 , G11B27/032 , G11B27/10 , G11B2220/90 , H04N5/765 , H04N5/775 , H04N5/78263 , H04N5/783 , H04N9/7921 , H04N9/7973 , H04N9/8042
摘要： A digital information transmitting, receiving and/or recording/reproducing system, provided with the digital information transmitting apparatus for transmitting the digital information to a transmission path, a receiving apparatus for receiving the transmitted digital information and a recording/reproducing apparatus for the recording received digital information to a recording media and reproducing therefrom. The apparatus includes a compressor which compresses the digital information, a transmission parity signal adder which adds a transmission parity signal to the output signal of the compressor in order to correct an error occurring in the transmission path, wherein the transmission parity signal is different from a record parity signal to be added at the recording apparatus and a transmitter which transmits the transmission parity signal added compressed digital information added by the transmission parity signal adder to the transmission path.
摘要翻译：具有数字信息发送装置的数字信息发送，接收和/或记录/再现系统，用于将数字信息发送到传输路径，用于接收所发送的数字信息的接收装置和用于记录的记录/再现装置数字信息到记录介质并从中再现。该装置包括压缩数字信息的压缩器，传输奇偶校验信号加法器，其将传输奇偶校验信号与压缩器的输出信号相加，以便校正在传输路径中发生的错误，其中传输奇偶信号不同于记录在记录装置中添加的奇偶校验信号;以及发送器，其将由发送奇偶校验信号加法器相加的加法压缩数字信息的发送奇偶校验信号发送到发送路径。

6. 发明授权

US06823466B2 Circuit and method for adjusting the clock skew in a communications system 失效
标题翻译：用于调整通信系统中的时钟偏移的电路和方法
公开(公告)号：US06823466B2
公开(公告)日：2004-11-23
申请号：US09967443
申请日：2001-09-28
申请人： Richard K. Karlquist
发明人： Richard K. Karlquist
IPC分类号： G11B500
CPC分类号： G01R31/31725 , G01R31/3191 , G01R31/31937
摘要： A circuit and method are disclosed for adjusting the clock skew in a synchronous system. The circuit and method include initially applying an offset voltage to a data input of a device in the system. Next, the clock skew between a device and a data source providing data thereto is adjusted to approximately 180 degrees, by selecting the clock skew resulting in an approximately maximum DC offset appearing at the output of the device. Thereafter, the clock skew is shifted from approximately 180 degrees to the desired clock skew amount.
摘要翻译：公开了用于调整同步系统中的时钟偏差的电路和方法。电路和方法包括首先将偏移电压施加到系统中的装置的数据输入端。接下来，通过选择时钟偏移导致出现在设备的输出处的近似最大DC偏移，将设备和提供数据的数据源之间的时钟偏差调整到大约180度。此后，时钟偏移从大约180度移动到期望的时钟偏移量。

7. 发明授权

US06754030B2 Optimal reader-to-writer offset measurement of a head in a disc drive for reduced track misregistration 有权
标题翻译：磁盘驱动器中头部的最佳读写器偏移测量用于减少轨道重合失调
公开(公告)号：US06754030B2
公开(公告)日：2004-06-22
申请号：US10029318
申请日：2001-12-21
申请人： Edmun Chian Song Seng , Xiong Liu , Aik Chuan Lim , Kay Hee Tang , Utt Heng Kan , Choon Kiat Lim
发明人： Edmun Chian Song Seng , Xiong Liu , Aik Chuan Lim , Kay Hee Tang , Utt Heng Kan , Choon Kiat Lim
IPC分类号： G11B500
CPC分类号： G11B20/20 , G11B5/59627 , G11B27/36 , G11B2220/20
摘要： A method of and apparatus for generating a reader-to-writer offset for a head positioned over a track on a disc in a disc drive having a plurality of tracks is disclosed. A reader and a writer are mounted on the head in a non-overlapping manner with a gap between the reader and the writer, which is known as the reader-to-writer offset. A disc drive controller is operably connected to the reader and the writer. The disc drive controller determines the reader-to-writer offset of the head for each track by computing the difference between a first head position x1 and a second head position x2. The first head position x1 is an optimal head position for writing information on the track and the second head position x2 is a midpoint of an off-track capability (OTC) of the head. The OTC is a portion of a track pitch over which the reader is expected to read information that is free of an incorrigible bit error such that the writer-to-reader track misregistration (TMR) is minimized as the head is radially displaced the reader-to-writer offset to read information written on the track or to write information on the track.
摘要翻译：公开了一种用于为位于具有多个磁道的磁盘驱动器中的磁盘上的轨道上的磁头产生读取器到写入器偏移的方法和装置。阅读器和写入器以不重叠的方式安装在头上，读取器和写入器之间的间隙被称为读写器偏移。磁盘驱动器控制器可操作地连接到读取器和写入器。磁盘驱动器控制器通过计算第一磁头位置x1和第二磁头位置x2之间的差来确定每个轨道的磁头的读写器偏移。第一头位置x1是用于在轨道上写入信息的最佳头部位置，而第二头部位置x2是头部的偏离轨迹能力（OTC）的中点。 OTC是轨道间距的一部分，阅读器期望阅读器读取没有不可避免的位错误的信息，使得写入器到读取器轨迹重合失调（TMR）最小化，因为磁头使读取器 - 写入器偏移以读取写在轨道上的信息或在轨道上写入信息。

8. 发明授权

US06675327B1 Communications system including lower rate parallel electronics with skew compensation and associated methods 有权
标题翻译：通信系统包括具有偏斜补偿的低速并行电路和相关方法
公开(公告)号：US06675327B1
公开(公告)日：2004-01-06
申请号：US09460165
申请日：1999-12-13
申请人： Mohammad S. Mobin , Michael S. Shaffer , Himanshu Mahendra Thaker , Charles Albert Webb, III , Lesley Jen-Yuan Wu
发明人： Mohammad S. Mobin , Michael S. Shaffer , Himanshu Mahendra Thaker , Charles Albert Webb, III , Lesley Jen-Yuan Wu
IPC分类号： G11B500
CPC分类号： H04L1/0061 , H04J3/0626 , H04L25/4904
摘要： A communications system includes a first device comprising a plurality of electrical-to-transmission medium converters, and a second device comprising a plurality of transmission medium-to-electrical converters to be connected to respective ones of the electrical-to-transmission medium converters via at least one transmission medium and defining parallel communications channels between the first and second devices, and wherein deskewing is provided. More particularly, the first device may include a string-based framing coder for determining and appending a string-based framing code to each information symbol string of information symbol strings to be transmitted in parallel over respective parallel communications channels. Each string-based framing code is based upon at least some of the information symbols in the respective information symbol string. The second device preferably comprises a deskewer for aligning received information symbol strings based upon the string-based framing codes. The symbols may be binary bits, and the string-based codes may be CRC codes.
摘要翻译：通信系统包括包括多个电传输介质转换器的第一设备和包括多个传输介质到电转换器的第二设备，所述多个传输介质到电转换器经由至少一个传输介质并且在第一和第二设备之间定义并行通信信道，并且其中提供了去歪斜。更具体地，第一设备可以包括基于串的成帧编码器，用于确定并将基于字符串的成帧代码附加到要在各个并行通信信道上并行发送的信息符号串的每个信息符号串。每个基于字符串的成帧代码基于相应信息符号串中的至少一些信息符号。第二装置优选地包括用于基于基于字符串的成帧代码来对准所接收的信息符号串的偏台。符号可以是二进制位，并且基于字符串的代码可以是CRC码。

9. 发明授权

US06577458B2 Memo tape recorder and reader system and method 失效
公开(公告)号：US06577458B2
公开(公告)日：2003-06-10
申请号：US10125962
申请日：2002-04-18
申请人： Richard Paul Day
发明人： Richard Paul Day
IPC分类号： G11B500
CPC分类号： G11B25/063 , G11B5/008
摘要： There is provided a system and method for the recordation an audio message, whereby the system converts the recorded message to a digital format, and stores the message on a record medium (18) integrally associated with the system. The record medium (18) with recorded message can be removably affixed to a wide range of objects. The system easily facilitates read, decode, and playback functionality for the recorded message without necessitating removal of the record medium (18) from the object to which it is affixed. Further, the system provides the functionality to store and forward audio messages in digital format to various computer systems (56) and computer-related devices.

10. 发明授权

US06411461B1 Data collection system and method for zero acceleration path correction 有权
标题翻译：零加速度路径校正的数据采集系统和方法
公开(公告)号：US06411461B1
公开(公告)日：2002-06-25
申请号：US09243574
申请日：1999-02-03
申请人： Gabor Szita
发明人： Gabor Szita
IPC分类号： G11B500
CPC分类号： G11B5/59627
摘要： A method of correcting track misregistration in a servo system for a disc drive including one or more discs includes positioning a head over a track located on a disc and maintaining the head centered over the track. The process for maintaining the head centered may include measuring the radial position of the head relative to the disc and determining correction factors for a zero acceleration path. Correction factors are determined by modeling an actuator transfer function to produce an estimated position signal. Subsequently, an estimated disturbance signal is determined by subtracting the measured position and the estimated position signal and filtering it with an adaptation filter. Thereafter, the estimated disturbance signal is subtracted from the measured radial position to produce a modified position measurement signal. The head is repositioned in accordance with the modified position measurement signal. In addition, a servo system for a disc drive which implements the method of correcting track misregistration is provided.
摘要翻译：一种校正用于包括一个或多个光盘的盘驱动器的伺服系统中的轨迹重合失调的方法包括将磁头定位在位于盘上的轨道上，并将磁头保持在轨道上方的中心位置。用于保持头部居中的过程可以包括测量头相对于盘的径向位置并且确定零加速路径的校正因子。校正因子通过对致动器传递函数建模以产生估计位置信号来确定。随后，通过减去测量位置和估计的位置信号并用适配滤波器对其进行滤波来确定估计的干扰信号。此后，从测量的径向位置减去估计的干扰信号，以产生修改的位置测量信号。根据修改的位置测量信号重新定位头部。此外，提供了一种用于实现纠正轨迹重合失调的方法的盘驱动器的伺服系统。

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