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91. 发明授权

US5870591A A/D with digital PLL 失效
标题翻译：带数字PLL的A / D
公开(公告)号：US5870591A
公开(公告)日：1999-02-09
申请号：US691411
申请日：1996-08-02
申请人： Masaru Sawada
发明人： Masaru Sawada
IPC分类号： G11B5/012 , G11B5/55 , G11B5/596 , H03L7/091 , H03L7/099 , G06F1/04
CPC分类号： H03L7/0993 , G11B5/012 , G11B5/553 , G11B5/59622 , H03L7/091
摘要： A digital arithmetic operation circuit includes a plurality of arithmetic operation blocks, a control signal generator and a selector. The plurality of arithmetic operation blocks receive a plurality of digital input signals and perform different arithmetic operations on the received digital input signals, in parallel, to output operation result signals. The control signal generator receives a plurality of digital input signals and generates a control signal based on the digital input signals. The selector selects one of the operation result signals, in response to the control signal, to output the selected operation result signal. After the control signal generator supplies the control signal to the selector, the selector outputs the selected operation result signal as soon as the selected operation result signal is supplied to the selector.
摘要翻译：数字运算电路包括多个算术运算块，控制信号发生器和选择器。多个算术运算块并行地接收多个数字输入信号，并对接收的数字输入信号进行不同的算术运算，以输出运算结果信号。控制信号发生器接收多个数字输入信号，并根据数字输入信号产生控制信号。选择器响应于控制信号选择一个操作结果信号，以输出所选择的运算结果信号。在控制信号发生器将控制信号提供给选择器之后，一旦选择的操作结果信号被提供给选择器，选择器输出所选择的运算结果信号。

92. 发明授权

US5781381A Double-driving head actuator 失效
标题翻译：双驱动头执行器
公开(公告)号：US5781381A
公开(公告)日：1998-07-14
申请号：US728079
申请日：1996-10-09
申请人： Shinji Koganezawa , Yoshifumi Mizoshita
发明人： Shinji Koganezawa , Yoshifumi Mizoshita
IPC分类号： G11B21/02 , G11B5/48 , G11B5/55 , G11B21/10
CPC分类号： G11B5/553 , G11B5/4813 , G11B5/4873 , G11B5/5552
摘要： A head actuator in a magnetic disk drive, including an actuator arm rotatably mounted on a base of the magnetic disk drive, a first driving mechanism for rotating the actuator arm, and a load beam for supporting at a front end portion thereof a slider carrying a head. The head actuator further includes a second driving mechanism composed of a leaf spring for elastically connecting a front end portion of the actuator arm and a base end portion of the load beam, and an electromagnetic motor for swinging the load beam with respect to the actuator arm.
摘要翻译：一种磁盘驱动器中的头致动器，包括可旋转地安装在磁盘驱动器的基座上的致动器臂，用于使致动器臂旋转的第一驱动机构，以及用于在其前端部分支撑承载头。头致动器还包括第二驱动机构，该第二驱动机构由用于弹性地连接致动器臂的前端部和负载梁的基端部的板簧构成，以及用于使负载梁相对于致动器臂摆动的电磁马达。

93. 发明授权

US5764440A Three flange carriage structure for improved voice coil support 失效
标题翻译：三法兰托架结构，可改善音圈支撑
公开(公告)号：US5764440A
公开(公告)日：1998-06-09
申请号：US24539
申请日：1993-03-01
申请人： Kent Jon Forbord
发明人： Kent Jon Forbord
IPC分类号： G11B5/48 , G11B5/55 , G11B5/596 , G11B33/08
CPC分类号： G11B5/553 , G11B5/4813 , G11B33/08 , G11B5/5582 , G11B5/59605
摘要： An improved actuator support structure for supporting rotary actuator coils in a disc drive system. The support structure includes a support which extends from a central portion to the actuator coil so that when the coil is excited, the coil will remain in tension. The invention increases all natural frequencies of the actuator coil so that servo stability is enhanced. In a preferred embodiment, the support structure fits into a magnetic pole piece such that the actuator coil occupies a gap space between a front leg and a back leg of the magnetic pole piece.
摘要翻译：用于在盘驱动系统中支撑旋转致动器线圈的改进的致动器支撑结构。支撑结构包括从中心部分延伸到致动器线圈的支撑件，使得当线圈被激励时，线圈将保持张力。本发明增加了致动器线圈的所有固有频率，从而提高了伺服稳定性。在优选实施例中，支撑结构装配到磁极片中，使得致动器线圈占据磁极片的前腿和后腿之间的间隙。

94. 发明授权

US5606470A Method and apparatus for controlling magnetoresistive effect element head 失效
标题翻译：用于控制磁阻效应元件头的方法和装置
公开(公告)号：US5606470A
公开(公告)日：1997-02-25
申请号：US397522
申请日：1995-03-02
申请人： Akio Shioya , Yuji Hata
发明人： Akio Shioya , Yuji Hata
IPC分类号： G11B5/00 , G11B5/02 , G11B5/40 , G11B5/55 , G11B5/584 , G11B5/596 , G11B19/04 , G11B5/03 , G11B5/127 , G11B5/58
CPC分类号： G11B5/553 , G11B19/04 , G11B5/40 , G11B5/5508 , G11B5/5547 , G11B5/584 , G11B5/59683 , G11B2005/0018
摘要： When a magnetic recording and reproducing apparatus is in a waiting state, feedback control for positioning the carriage is released, and a supply of a sense current to the magnetoresistive effect element of the MR magnetic head is adjusted so as to prolong the life of the MR magnetic head. When the interface and control circuit recognizes that there is no order from the host computer and that the magnetic recording and reproducing apparatus is in a wait state, the servo control circuit releases the feedback control for positioning the head. A mode, etc. selection control circuit controls the recording/reproduction amplifier so as not to supply a sense current to the magnetoresistive effect element of the MR magnetic head. Accordingly, the time for supplying a sense current to the magnetoresistive effect element of the MR magnetic head is reduced in a great measure and, therefore, it is possible to prevent the deterioration of the element characteristics by electro-migration or the like. The result is that the life of the element can be prolonged. Hence, the output of the MR magnetic head can be increased without sacrificing the reliability. Accordingly, it has become possible to improve the performance of a high-output magnetic recording and reproducing apparatus using an MR magnetic head.
摘要翻译：当磁记录和再现装置处于等待状态时，释放用于定位滑架的反馈控制，并且调整向MR磁头的磁阻效应元件提供感测电流以延长MR的寿命磁头。当接口和控制电路识别出没有来自主机的命令并且磁记录和再现装置处于等待状态时，伺服控制电路释放用于定位磁头的反馈控制。模式等选择控制电路控制记录/再现放大器，以便不向MR磁头的磁阻效应元件提供感测电流。因此，为MR磁头的磁阻效应元件提供感应电流的时间大大降低，因此可以通过电迁移等来防止元件特性的劣化。结果是元素的寿命可以延长。因此，可以增加MR磁头的输出而不牺牲可靠性。因此，可以提高使用MR磁头的高输出磁记录和再现装置的性能。

95. 发明授权

US5596460A System and method for encoding a servo address 失效
标题翻译：用于编码伺服地址的系统和方法
公开(公告)号：US5596460A
公开(公告)日：1997-01-21
申请号：US364561
申请日：1994-12-27
申请人： Richard Greenberg , John C. Purkett
发明人： Richard Greenberg , John C. Purkett
IPC分类号： G11B21/10 , G11B5/48 , G11B5/55 , G11B5/596 , G11B7/007 , G11B20/12 , G11B21/00 , G11B21/08 , G11B27/10 , G11B27/30 , G11B5/09
CPC分类号： G11B20/1252 , G11B21/00 , G11B27/105 , G11B27/3027 , G11B5/4886 , G11B5/59655 , G11B7/00745 , G11B20/1217 , G11B2020/1234 , G11B2220/20 , G11B5/553
摘要： A servo address is encoded in a disk drive system having at least one disk for storing data. A servo address associated with a sector in a track, or cylinder, on a surface of a disk and comprised of a sector number, a track number, and in multiple disk systems, a head number is encoded into the encoded servo address. Encoding the servo address saves disk storage space because the encoded servo address uses fewer bits than a conventional servo address while still enabling the disk drive system to locate positions on the disk.
摘要翻译：伺服地址被编码在具有至少一个用于存储数据的盘的磁盘驱动器系统中。与盘的表面上的轨道或圆柱体中的扇区相关联的由扇区号，轨道号和多个盘系统组成的伺服地址，头编号到编码的伺服地址中。编码伺服地址可节省磁盘存储空间，因为编码伺服地址比传统伺服地址使用的位数更少，同时仍然允许磁盘驱动器系统定位磁盘上的位置。

96. 发明授权

US5430594A Magnetic recording medium 失效
标题翻译：磁记录介质
公开(公告)号：US5430594A
公开(公告)日：1995-07-04
申请号：US240370
申请日：1994-05-10
申请人： Nobuhiro Umebayashi , Minoru Fujita
发明人： Nobuhiro Umebayashi , Minoru Fujita
IPC分类号： G11B5/55 , G11B5/74 , G11B5/82 , G11B21/10
CPC分类号： G11B5/855 , G11B5/553 , G11B5/74 , G11B5/825
摘要： There is provided a magnetic recording medium which is highly reliable so that tracking servo can be properly effected wherein Z.ltoreq.0.49 is established when light reflectance on a data track is represented by X, light reflectance of a magnetic head-tracking recess is represented by Y, and Z=Y/X.
摘要翻译：提供了一种高度可靠的磁记录介质，使得可以适当地实现跟踪伺服，其中当数据轨道上的光反射率由X表示时，Z <= 0.49被建立，表示磁头跟踪凹部的光反射率 Y，Z = Y / X。

97. 发明授权

US5400192A Storage device having vibratory head 失效
标题翻译：具有振动头的存储装置
公开(公告)号：US5400192A
公开(公告)日：1995-03-21
申请号：US945455
申请日：1992-09-16
申请人： Yoshifumi Mizoshita , Hiroshi Maeda , Takao Koshikawa , Takayuki Yamamoto
发明人： Yoshifumi Mizoshita , Hiroshi Maeda , Takao Koshikawa , Takayuki Yamamoto
IPC分类号： G11B5/008 , G11B5/012 , G11B5/48 , G11B5/53 , G11B5/54 , G11B5/55 , G11B25/04 , H02K7/14 , H02N1/00 , G11B21/02 , G11B5/596
CPC分类号： G11B5/5521 , G11B25/04 , G11B5/00804 , G11B5/012 , G11B5/488 , G11B5/53 , G11B5/54 , G11B5/55 , G11B5/553 , H02K7/14 , H02N1/004 , H02N1/008 , H02K99/00
摘要： A storage device includes a substrate, a magnetic storage medium provided on the substrate, information being magnetically stored in the magnetic storage medium, a head unit, and a reciprocating mechanism provided on the substrate, the reciprocating mechanism causing the head unit to reciprocate in a plane parallel to a surface of the magnetic storage medium, wherein, while the head unit is being moved by the reciprocating mechanism, information is recorded in or reproduced from the magnetic storage medium via the head unit. The reciprocating motion of the head unit is provided by piezoelectric elements on arms supporting the head, which move the head with a predetermined stroke width in simple harmonic motion.
摘要翻译：存储装置包括基板，设置在基板上的磁存储介质，磁存储在磁存储介质中的信息，磁头单元和设置在基板上的往复机构，所述往复机构使磁头单元在平行于磁存储介质的表面的平面，其中，当头单元通过往复机构移动时，信息经由头单元记录在磁存储介质中或从磁存储介质再现。头单元的往复运动由支撑头部的臂上的压电元件提供，其以简单的谐波运动以预定的行程宽度移动头部。

98. 发明授权

US5087996A Disk drive method and apparatus 失效
标题翻译：磁盘驱动方式及装置
公开(公告)号：US5087996A
公开(公告)日：1992-02-11
申请号：US455078
申请日：1989-12-22
申请人： Roger O. Williams , Titus E. Davis
发明人： Roger O. Williams , Titus E. Davis
IPC分类号： G11B5/55
CPC分类号： G11B5/553
摘要： A disk drive has a side-zero and a side-one analog and digital circuits. The disk drive may write both sides of the disk at the same time and then verify both sides at the same time. A microcontroller is connected to the side-zero and side-one digital circuits. The microcontroller receives the sensor index pulse from the index sensor and then sends a microcontroller index pulse to the side-zero and side-one digital circuits a predetermined period of time after receiving the sensor index pulse. The predetermined period of time is such that after the head is stepped to the next track and achieves a stable position, writing will begin.
摘要翻译：一个磁盘驱动器有一个旁路零和一个模拟和数字电路。磁盘驱动器可以同时写入磁盘的两侧，然后同时验证两边。微控制器连接到侧零和一对数字电路。微控制器从索引传感器接收传感器索引脉冲，然后在接收到传感器索引脉冲之后的预定时间段内向微处理器索引脉冲发送到副零和一对数字电路。预定时间段使得在头部踏入下一个轨道并达到稳定位置之后，将开始写入。

99. 发明授权

US4967294A Magnetic recording/reproducing device which discriminates recorded and unrecorded tracks 失效
标题翻译：磁记录/再现装置，其识别记录和未记录的轨道
公开(公告)号：US4967294A
公开(公告)日：1990-10-30
申请号：US238850
申请日：1988-08-31
申请人： Kiyotaka Kaneko , Izumi Miyake , Yoshio Nakane , Hiroshi Shimaya
发明人： Kiyotaka Kaneko , Izumi Miyake , Yoshio Nakane , Hiroshi Shimaya
IPC分类号： G11B19/02 , G11B5/55 , G11B19/04
CPC分类号： G11B19/04 , G11B5/553
摘要： A magnetic recording/reproducing device which has a track search function to discriminate a recorded track from an unrecorded track for all tracks formed in a magnetic disc. In the magnetic recording/reproducing device, in accordance with signals output from a magnetic head when the magnetic head is moved to positions lying at least adjacent to the central position of a track accessed, with a predetermined position on the magnetic disc designated as a reference position, it is determined whether each accessed track is a recorded track or an unrecorded track. Data representing the check results are stored in memory corresponding to the track numbers respectively given to the tracks. This assures an accurate track search.
摘要翻译：磁记录/再现装置，其具有轨道搜索功能，用于将记录的轨道与形成在磁盘中的所有轨道的未记录轨道区分开。在磁记录/再现装置中，当磁头移动到至少邻近所访问的轨道的中心位置的位置时，根据从磁头输出的信号，在磁盘上指定为参考的预定位置位置，确定每个被访问的轨道是记录的轨道还是未记录的轨道。表示检查结果的数据存储在与分配给轨道的轨道号相对应的存储器中。这确保了一个准确的轨道搜索。

100. 发明授权

US4677358A Stepping motor drive controlling circuit 失效
标题翻译：步进电机驱动控制电路
公开(公告)号：US4677358A
公开(公告)日：1987-06-30
申请号：US841874
申请日：1986-03-20
申请人： Tadami Sugawara , Masao Okita
发明人： Tadami Sugawara , Masao Okita
IPC分类号： H02P8/40 , G11B5/55 , G11B21/08 , H02P8/00
CPC分类号： G11B5/553
摘要： A controlling circuit for a stepping motor provided on a disk recording and reproducing apparatus which circuit can prevent outputting of a zero track signal in error that may be caused by a stepping error to assuredly step a head to the zero track of a disk. The circuit comprises an excitation initializing circuit which is operable in response to a power on signal and a drive select signal for sequentially switching the exciting mode of the stepping motor from the AB phase mode to the AB phase mode.
摘要翻译：一种用于设置在盘记录和再现装置上的步进电机的控制电路，该电路可以防止可能由步进误差引起的错误的零轨道信号的输出，以确定地将盘头的零轨迹推向盘。该电路包括可响应于接通信号操作的激励初始化电路和用于将步进电机的激励模式从“升压和A相模式”顺序切换到AB相模式的驱动选择信号。

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