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1. 发明授权

EP1490866B1 DISK DRIVE WRITER WAVEFORM INDUCED PRECOMPENSATION 有权
标题翻译：由传动信号记录FORM诱导预补偿
公开(公告)号：EP1490866B1
公开(公告)日：2013-07-24
申请号：EP03746078.9
申请日：2003-04-01
申请人： Agere Systems Inc.
发明人： ELLIOTT, Carl F., Agere Systems Guardian Corp. , LEIGHTON, John D., Agere Systems Guardian Corp.
IPC分类号： G11B5/09
CPC分类号： G11B20/10194 , G11B5/012 , G11B5/035 , G11B5/09 , G11B20/10009 , G11B2005/001

2. 发明公开

EP2377124A1 SYSTEMS AND METHODS FOR ADAPTIVE TARGET SEARCH 有权转让
标题翻译：系统和方法自适应目标搜索
公开(公告)号：EP2377124A1
公开(公告)日：2011-10-19
申请号：EP09837740.1
申请日：2009-01-09
申请人： LSI Corporation
发明人： LIU, Jingfeng , SONG, Hongwei
IPC分类号： G11B5/02 , G11B5/035 , G11B21/02 , G11B20/10
CPC分类号： G11B20/10009 , G11B5/035 , G11B5/09 , G11B20/10046 , G11B20/10212 , G11B20/10481 , G11B2220/2516
摘要： Various embodiments of the present invention provide systems and methods for data processing. For example, some embodiments of the present invention provide data processing circuits that include both a main data processing circuit and an adaptive setting determination circuit. The main data processing circuit receives a series of data samples and includes: an equalizer circuit and a data detector circuit. The equalizer circuit receives the series of data samples and provides an equalized output. The equalizer circuit is controlled at least in part by a coefficient. The data detector circuit receives the equalizer output and provides a main data output based at least in part on a target. The adaptive setting determination circuit receives the series of data samples and the main data output, and operates in parallel with the main data processing circuit to adaptively determine the coefficient and the target.

3. 发明公开

EP1333427A3 Circuit for reading differential data from a disk by applying a voltage bias on a read head 审中-公开
标题翻译：用于通过将电压施加到偏置的读取头的装置从磁盘读取数据的差分电路
公开(公告)号：EP1333427A3
公开(公告)日：2008-04-30
申请号：EP03100196.9
申请日：2003-01-30
申请人： Texas Instruments Incorporated
发明人： Sharifi, Reza , Ranmuthu, Indumini W.
IPC分类号： G11B5/012 , G11B5/09 , G11B5/035 , G11B19/02
CPC分类号： H03F1/307 , G11B5/012 , G11B5/02 , G11B5/035 , G11B5/09 , G11B19/02 , G11B20/10527 , G11B2005/0013 , G11B2005/0018 , G11B2020/10537 , G11B2020/10833
摘要： Circuit, including a read circuit (418) to read the differential data from the disk by maintaining the voltage bias on the read head (164), an optimal voltage circuit (430) determining the optimal voltage bias to be applied to the read head (164), and a circuit (402) to apply said optimal voltage bias to the read head.

4. 发明授权

EP0853310B1 Magnetic storage apparatus using a magnetoresistive element 失效
标题翻译：具有磁阻元件的磁存储装置
公开(公告)号：EP0853310B1
公开(公告)日：2004-10-06
申请号：EP98300151.2
申请日：1998-01-09
申请人： Hitachi Global Storage Technologies Japan, Ltd.
发明人： Tsuchiya, Reijiro , Suzuki, Mikio
IPC分类号： G11B5/012 , G11B5/008 , G11B19/02 , G11B5/035 , G11B5/455
CPC分类号： G11B5/02 , G11B5/00813 , G11B5/012 , G11B5/035 , G11B2005/0008 , G11B2005/0018

5. 发明公开

EP1411501A1 MAGNETIC REPRODUCTION APPARATUS AND MAGNETIC REPRODUCTION METHOD 审中-公开
标题翻译：磁性重放设备和磁性回放
公开(公告)号：EP1411501A1
公开(公告)日：2004-04-21
申请号：EP02751645.9
申请日：2002-07-18
申请人： Sony Corporation
发明人： KOTANI, Yasutaka , YANAGI, Yuji
IPC分类号： G11B5/09 , G11B5/02 , G11B20/10 , G11B20/14
CPC分类号： G11B20/10175 , G11B5/00 , G11B5/00813 , G11B5/0086 , G11B5/02 , G11B5/035 , G11B5/09 , G11B5/488 , G11B20/00086 , G11B20/10009 , G11B20/10055 , G11B20/18 , G11B2005/0016 , G11B2020/1461 , G11B2220/2562
摘要： There are provided a magnetic reproducing apparatus and a magnetic reproducing method, which are suitable for use in reproducing a magnetic tape by using, for example, a magnetoresistive element.
A signal input from a data input 1 undergoes processing suitable for magnetic recording in a recording signal processing circuit 2, and is supplied to a predetermined precoder 3. The signal from the precoder 3 is recorded by a recording head 5 on a recording medium 6 such as a magnetic tape through a recording amplifier 4. The signal read from the recording medium 6 by the reproducing head 7 is supplied to a reproduction equalizer amplifier 8 to be amplified and equalized. The equalized signal is supplied to a circuit 10 having a channel characteristic of, for example, a Partial Response Class 4 (PR4) through an A/D converter 9. The output signal from the circuit 10 is supplied to a PR4 decoder circuit 11 to detect the signal. Further, the signal from the decoder circuit 11 is sent to a reproduction signal processing circuit 12. Then, the signal is output to a data output 13 after executing demodulation, restoration to the original form from the packetized state of the signal, error correction and the like.
Accordingly, the magnetoresistive element conventionally used for reproducing a hard disk and the like may be applied to reproduction of a magnetic tape.

6. 发明授权

EP0831478B1 Data processing apparatus and methods 失效
标题翻译：数据处理设备和方法
公开(公告)号：EP0831478B1
公开(公告)日：2003-11-19
申请号：EP96306938.0
申请日：1996-09-24
申请人： Hewlett-Packard Company, A Delaware Corporation
发明人： Williams, Christopher Huw , Brown, Andrew David , Morling, Robert Philip
IPC分类号： G11B20/10 , G11B5/09
CPC分类号： G11B15/087 , G11B5/0086 , G11B5/035 , G11B5/09 , G11B20/10009 , H03H21/0012

7. 发明公开

EP1293977A2 Programmable write equalization circuit 审中-公开
标题翻译： Programmierbare Schreibentzerrungsvorrichtung
公开(公告)号：EP1293977A2
公开(公告)日：2003-03-19
申请号：EP02256398.5
申请日：2002-09-16
申请人： QUANTUM CORPORATION
发明人： Sembera, Ben , Koller, Justin J.
IPC分类号： G11B20/10 , G11B5/09
CPC分类号： G11B20/10046 , G11B5/00813 , G11B5/035 , G11B5/09 , G11B20/10009
摘要： A programmable write equalization circuit (30) includes a first digital clock (48) that is used as a reference to indicate data rate, a second digital clock (52) used to indicate write equalization quantization, a look-up table (60) used to store waveforms used in equalizing the input from the first digital clock domain to the second digital clock domain, a counter (54) used to indicate the number of bits within the look-up table that are to be used for each translation, a polarity detector (74) used to detect the current state of the input data, a non-return-to-zero (NRZ) filter (34) used to indicate the placement of data transitions and non-transitions, and a software interface including programmable registers to control each one of the parameters within the equalization circuit.
摘要翻译：可编程写入均衡电路（30）包括用作指示数据速率的参考的第一数字时钟（48），用于指示写均衡量化的第二数字时钟（52），使用的查找表（60）用于存储用于将来自第一数字时钟域的输入均衡到第二数字时钟域的波形;计数器（54），用于指示查找表中用于每个转换的位数，极性用于检测输入数据的当前状态的检测器（74），用于指示数据转换和非转换的放置的非归零（NRZ）滤波器（34），以及包括可编程寄存器以控制均衡电路内的每个参数。

8. 发明公开

EP1267331A2 Method and apparatus for controlling magnetic disk drive 失效
标题翻译：用于控制磁盘驱动器的方法和设备
公开(公告)号：EP1267331A2
公开(公告)日：2002-12-18
申请号：EP02018030.3
申请日：1995-01-04
申请人： FUJITSU LIMITED
发明人： Kohno, Keiichi , Nagasaka, Yoshiyuki , Kozuka, Tamotsu , Yoshida, Susumu , Takahashi, Tsuyoshi , Ishii, Masayoshi
IPC分类号： G11B5/39 , G11B21/08 , G11B19/02
CPC分类号： G11B19/20 , G11B5/012 , G11B5/03 , G11B5/035 , G11B5/39 , G11B5/40 , G11B5/4886 , G11B5/5521 , G11B5/5547 , G11B5/56 , G11B5/59683 , G11B19/02 , G11B19/04 , G11B19/28 , G11B21/085 , G11B21/18 , G11B2005/0018
摘要： A method of controlling a magnetic disk drive including: at least one magnetic head including a write element for writing data to a magnetic disk (100) and a magneto-resistive element for reading the data from the magnetic disk; a spindle motor for rotating the magnetic disk; and a rotary type actuator (101) for locating the magnetic head in a desired track position on the magnetic disk, the method comprising: a step of detecting whether or not the spindle motor reaches steady rotation from rotating start; a step of starting a supply of a bias current to the magneto-resistive element according to a detection of the steady rotation; a step of detecting that the write head performs on a data writing and detecting that there is no access to the drive between a predetermined interval during supply of the bias current to the magneto-resistive element; and a step of stopping the supply of a bias current to the magneto-resistive element when detecting that the write head performs on a data writing or that there is no access to the drive between a predetermined interval.
摘要翻译：一种控制磁盘驱动器的方法，包括：至少一个磁头，包括用于将数据写入磁盘（100）的写入元件和用于从磁盘读取数据的磁阻元件; 用于旋转磁盘的主轴电机; 以及用于将磁头定位在磁盘上的期望磁道位置上的旋转型致动器（101），该方法包括：检测主轴电机是否从旋转开始达到稳定旋转的步骤; 根据稳定旋转的检测开始向磁阻元件提供偏置电流的步骤; 检测写入头对数据写入执行的步骤，并检测在向所述磁阻元件提供所述偏置电流期间在预定间隔之间不存在对所述驱动器的访问; 以及当检测到写入头执行数据写入或停止在预定间隔之间访问驱动器时停止向磁阻元件提供偏置电流的步骤。

9. 发明公开

EP1214708A1 RATIO METHOD FOR MEASUREMENT OF MR READ HEAD RESISTANCE 有权
标题翻译： ON用电阻MR读取器的每一个的关系基于方法的测定
公开(公告)号：EP1214708A1
公开(公告)日：2002-06-19
申请号：EP00958830.2
申请日：2000-09-08
申请人： International Business Machines Corporation , IBM United Kingdom Limited
发明人： TRETTER, Larry, LeeRoy , MALMBERG, James, Ernest
IPC分类号： G11B5/02 , G11B5/012 , G01R27/14
CPC分类号： G11B5/035 , G01R27/14 , G11B5/00813 , G11B5/012 , G11B5/40 , G11B5/455 , G11B33/10 , G11B2005/0016
摘要： A reference current (ICAL) and resistance is used to determine a reference voltage. A variable current is then applied to the MR read head, and is adjusted to produce a voltage equal to that of the reference voltage (V ref). Then, the known current and voltage is used to determine the resistance of the MR read head.

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