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61. 发明公开

EP0822554A3 Method and apparatus for adaptively processing the readback signal in a read channel device for digital storage 失效
标题翻译：在用于数字存储一读取通道设备的方法和用于读出信号的自适应处理装置
公开(公告)号：EP0822554A3
公开(公告)日：1998-10-21
申请号：EP97113311.1
申请日：1997-08-01
申请人： NEC CORPORATION
发明人： Shih, Shih-Ming , Thapar, Hemant K. , Contreras, Richard A.
IPC分类号： G11B20/10 , H03H21/00
CPC分类号： G11B20/10055 , G05F3/225 , G11B5/035 , G11B20/10009 , G11B20/10481 , G11B33/14 , G11B2005/001 , H03H11/1291 , H03H21/0001 , H03H21/0012
摘要： Apparatus and Methods are disclosed for adaptively optimizing an ER filter in a readback system of a storage device, such as a disk drive. A sample value is read from the storage device and an error measure is calculated between the sample value and an ideal value. Pole parameters and zeros of the ER filter are modified to minimize the ER filter. The apparatus and methods disclosed can function with customer data to adaptively optimize the ER filter in real time during normal operation of the storage device. Furthermore, temperature compensation circuits are disclosed to compensate for temperature dependencies in the ER filter.
摘要翻译：设备和方法盘游离缺失用于自适应地优化到ER滤波器在存储装置中的读回系统，检测作为磁盘驱动器。的采样值是从所述存储装置读和误差测量值的采样值之间，并理想计算。极参数和ER滤波器的零点被修改以最小化ER滤波器。可以游离缺失与客户数据功能的装置和方法盘向存储装置的正常手术期间自适应地优化实时ER滤波器。进一步，温度补偿电路是游离缺失盘，以补偿在ER过滤器温度的依赖关系。

62. 发明公开

EP0806036A4 EP0806036A4 - 失效
标题翻译： CN101607654A - Google专利
公开(公告)号：EP0806036A4
公开(公告)日：1997-11-12
申请号：EP95940512
申请日：1995-09-29
IPC分类号： G11B5/035 , G11B5/48 , G11B5/55 , G11B5/596 , G11B21/08 , G11B5/82
CPC分类号： G11B21/083 , G11B5/035 , G11B5/4886 , G11B5/5534 , G11B5/59611 , G11B5/59644 , G11B5/5965 , G11B5/59655 , G11B5/59683
摘要： A method and apparatus for creating a position error signal (PES) voltage v. track distance curve for the head (20) of a hard disk drive (10). The disk (12) has a dedicated track which contains a plurality of servo bits (34) that allow the head to be centered with the centerline of the track. The dedicated track also has a number of calibration bits (50-60) each embedded at a known location off-set from the track centerline. The PES voltage v. track distance curve is generated by reading each calibration bit and storing the corresponding amplitude of the position error signal in a memory device of the disk drive. Each calibration bit is located from the track centerline a distance that is different from the other calibration bits so that there are provided multiple points on the track curve.
摘要翻译：一种用于为硬盘驱动器（10）的磁头（20）产生位置误差信号（PES）电压与磁道距离曲线的方法和装置。盘（12）具有专用轨道，该专用轨道包含允许头部与轨道的中心线对中的多个伺服位（34）。专用轨道还具有多个校准位（50-60），每个校准位嵌入在距离轨道中心线偏离的已知位置处。通过读取每个校准位并将相应的位置误差信号的幅度存储在磁盘驱动器的存储装置中来产生PES电压对轨道距离曲线。每个校准位都位于轨道中心线上与其他校准位不同的距离处，以便在轨道曲线上提供多个点。

63. 发明公开

EP0806036A1 OFF-TRACK PES CALIBRATION FOR A MAGNETO-RESISTIVE ELEMENT 失效
标题翻译：偏离轨道位置误差信号标定的磁阻元件
公开(公告)号：EP0806036A1
公开(公告)日：1997-11-12
申请号：EP95940512.0
申请日：1995-09-29
申请人： MAXTOR CORPORATION
发明人： VALENT, James, A.
IPC分类号： G11B5 , G11B21
CPC分类号： G11B21/083 , G11B5/035 , G11B5/4886 , G11B5/5534 , G11B5/59611 , G11B5/59644 , G11B5/5965 , G11B5/59655 , G11B5/59683
摘要： A method and apparatus for creating a position error signal (PES) voltage v. track distance curve for the head (20) of a hard disk drive (10). The disk (12) has a dedicated track which contains a plurality of servo bits (34) that allow the head to be centered with the centerline of the track. The dedicated track also has a number of calibration bits (50-60) each embedded at a known location off-set from the track centerline. The PES voltage v. track distance curve is generated by reading each calibration bit and storing the corresponding amplitude of the position error signal in a memory device of the disk drive. Each calibration bit is located from the track centerline a distance that is different from the other calibration bits so that there are provided multiple points on the track curve.

64. 发明公开

EP0766244A2 A read channel for at least partially offsetting nonlinear signal effects associated with the use of magneto-resistive heads 失效
标题翻译：为与使用的磁阻磁头相关联的非线性信号的影响至少部分位移的读信道
公开(公告)号：EP0766244A2
公开(公告)日：1997-04-02
申请号：EP96306733.5
申请日：1996-09-17
申请人： AT&T Corp.
发明人： Sonntag, Jeffrey Lee
IPC分类号： G11B20/10 , G11B5/09
CPC分类号： G11B5/02 , G11B5/035 , G11B20/10009 , G11B2005/0016
摘要： In accordance with one aspect of the invention, a device for use in a magnetic recording read channela (READ CHANNEL 1000) adapted to be coupled to a magneto-resistive (MR) read head (2000) comprises: an integrated circuit adapted (1100, 1105) so as to introduce a controllable amount of second-order nonlinearity into the magnetic recording read channel signal path to at least partially offset nonlinearity associated with use of the MR read head. In accordance with another aspect of the invention, a method of reducing nonlinear signal effects in a magnetic recording read channel signal path associated with use of a magneto-resistive (MR) read head comprises the step of: introducing into the read channel signal path a scalable square of the read channel signal.
摘要翻译：在符合本发明的一个方面雅舞蹈，用于在磁记录中使用的装置读取channela（读通道1000）angepasst为耦合到一个磁阻（MR）读头（2000）包括：集成电路angepasst（1100， 1105）以引入第二阶非线性的可控量到磁记录读通道信号路径与使用MR相关联的至少部分抵消非线性读头。在符合本发明的另一个方面雅舞蹈，减少磁记录非线性信号影响的方法读利用磁阻（MR）的相关联的信道信号路径读头包括以下步骤：引入所述读取通道信号路径中的读通道信号的可扩展的平方。

65. 发明授权

EP0534651B1 Signal processing system for adaptive equalization 失效
标题翻译：与自适应均衡信号处理系统
公开(公告)号：EP0534651B1
公开(公告)日：1996-10-23
申请号：EP92308316.6
申请日：1992-09-14
申请人： Hewlett-Packard Company
发明人： Baugh, Richard A. , Chiu, Ran-Fun , Hart, Darlene L. , Jam, Merban , Leung, Sui-Hing
IPC分类号： H04N5/92 , G11B20/18
CPC分类号： H04L25/03057 , G11B5/035 , G11B5/09 , G11B20/10009 , G11B20/24 , H04L25/03114 , H04L2025/03369 , H04L2025/03496 , H04L2025/03617

66. 发明公开

EP0632430A3 Amplifying circuit for magnetic record and playback apparatus 失效
标题翻译： Aufzeichnungs- undWiedergabegerät的Verstärker-Schaltungfürmagnetisches。
公开(公告)号：EP0632430A3
公开(公告)日：1996-02-28
申请号：EP94304694.6
申请日：1994-06-28
申请人： KABUSHIKI KAISHA TOSHIBA
发明人： Fujii, Toshikazu, c/o Intellectual Property Div.
IPC分类号： G11B5/02 , G11B33/12 , G11B15/12
CPC分类号： G11B5/00 , G11B5/0086 , G11B5/02 , G11B5/035 , G11B5/53 , G11B15/125 , G11B33/122 , H03F3/68 , H03F3/72
摘要： A DC feed-back circuit (A2) for causing a DC voltage of an external transistor (QX) in which an output bias current of a record amplifier flows to be equal to a DC voltage of an output terminal is provided so as to decrease power consumption. Thus, a plurality of record amplifying circuits can be incorporated into one IC chip. In particular, in home-use Hi-Fi VCRs, a Hi-Fi record amplifying circuit and video record amplifying circuits can be incorporated into one chip.
摘要翻译：设置用于使记录放大器的输出偏置电流流过的外部晶体管的直流电压等于输出端子的直流电压的DC反馈电路，以降低功耗。因此，可以将多个记录放大电路并入一个IC芯片。特别地，在家用Hi-Fi VCR中，Hi-Fi记录放大电路和视频记录放大电路可并入一个芯片中。

67. 发明公开

EP0665535A2 Method and apparatus for controlling magnetic disk drive 失效
标题翻译： Vorrichtung und Verfahren zur Steuerung einer magnetischen Platteneinheit。
公开(公告)号：EP0665535A2
公开(公告)日：1995-08-02
申请号：EP95100082.7
申请日：1995-01-04
申请人： FUJITSU LIMITED
发明人： Kohno, Keiichi, c/o Fujitsu Limited , Nagasaka, Yoshiyuki, c/o Fujitsu Limited , Kozuka, Tamotsu, c/o Fujitsu Limited , Yoshida, Susumu, c/o Fujitsu Limited , Takahashi, Tsuyoshi, c/o Yamagata Fujitsu Limited , Ishii, Masayoshi, c/o Yamagata Fujitsu Limited
IPC分类号： G11B5/55 , G11B21/08 , G11B5/02 , G11B19/20 , G11B19/02 , G11B5/39
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： Disclosed are a method of and an apparatus for controlling a magnetic disc drive including a magnetic head in which a write head and a read head are separated. The control method comprises: a step of calculating a moving quantity up to a designated target track position in accordance with a write instruction or a read instruction and calculating a moving quantity from the moving quantity up to the target track position and a yaw angle offset quantity in accordance with the read instruction or the write instruction; and a step of locating the magnetic head in the target track position by seek-controlling the rotary type actuator in accordance with the calculated moving quantity. The control apparatus comprises: a first control circuit for indicating a seek to a designated target track in accordance with a write instruction or a read instruction; and a second control circuit for calculating a moving quantity up to a designated target track position in accordance with the write instruction or the read instruction, calculating a moving quantity from the moving quantity up to the target track position and a yaw angle offset quantity in accordance with the read instruction or the write instruction and thus seek-controlling the rotary type actuator in accordance with the calculated moving quantity.
摘要翻译：公开了一种用于控制磁盘驱动器的方法和装置，该磁盘驱动器包括写入头和读取头分离的磁头。控制方法包括：根据写指令或读指令计算直到指定目标轨迹位置的移动量的步骤，并计算从移动量到目标轨迹位置的移动量和偏航角偏移量根据读取指令或写入指令; 以及通过根据计算的移动量搜索旋转型致动器来将磁头定位在目标轨迹位置的步骤。控制装置包括：第一控制电路，用于根据写入指令或读取指令指示对指定的目标轨道的寻道; 以及第二控制电路，用于根据写入指令或读取指令计算直到指定的目标轨道位置的移动量，根据移动量计算到目标轨迹位置的移动量和根据该偏移角偏移量的移动量读取指令或写入指令，从而根据计算出的移动量来寻求控制旋转型致动器。

68. 发明授权

EP0370772B1 Digital signal reproducing apparatus 失效
标题翻译：重放装置，用于数字信号。
公开(公告)号：EP0370772B1
公开(公告)日：1995-01-18
申请号：EP89312085.7
申请日：1989-11-21
申请人： SONY CORPORATION
发明人： Kanota, Keiji c/o Patents Division , Inoue, Hajime c/o Patents Division , Seki, Takahito c/o Patents Division
IPC分类号： G11B20/10
CPC分类号： G11B20/10009 , G11B5/035

69. 发明公开

EP0624867A3 Recording device with temperature-dependent write current control 失效
标题翻译： Aufzeichnungsvorrichtung mittemperaturabhängigerSchreibstromsteuerung。
公开(公告)号：EP0624867A3
公开(公告)日：1995-01-11
申请号：EP94201230.3
申请日：1994-05-03
申请人： PHILIPS ELECTRONICS N.V.
发明人： van Doorn, Rudolf Alexander , Verhallen, Franciscus Johannes Robertus
IPC分类号： G11B5/02 , G11B5/035 , G11B15/02 , G11B5/008
CPC分类号： G11B5/3945 , G11B5/035 , G11B5/3903 , G11B15/02
摘要： A device for recording an information signal on a magnetic record carrier comprises a recording amplifier (3), a magnetic head (4), and means for controlling the write current amplitude in dependence on temperature variations which occur during recording. This is effected by means of a temperature detector. The magnetic head (4) has a write section (5) for recording an information signal on the magnetic record carrier in a recording mode of the device, and a read section (6) for reading an information signal from the record carrier in a playback mode of the device. The read section (6) is of the magneto-resistive type. The temperature detector is formed by the read section.
摘要翻译：用于在磁记录载体上记录信息信号的装置包括记录放大器（3），磁头（4）和用于根据记录期间发生的温度变化来控制写入电流幅度的装置。这通过温度检测器来实现。磁头（4）具有用于在设备的记录模式下在磁记录载体上记录信息信号的写入部分（5），以及用于在回放中从记录载体读取信息信号的读取部分（6）设备的模式。读取部分（6）是磁阻型的。温度检测器由读取部分形成。

70. 发明公开

EP0592037A3 Recording device with temperature-dependent write-current control 失效
标题翻译：具有温度依赖性写入电流控制的记录装置
公开(公告)号：EP0592037A3
公开(公告)日：1994-05-11
申请号：EP93202811.1
申请日：1993-10-04
申请人： Philips Electronics N.V.
发明人： Van Doorn, Rudolf Alexander , Van Beckhoven, Stephanus Josephus Maria , Akkermans, Gerardus Wilhelmus Antonius , Verhallen, Francisus Johannes Robertus , Hoogendoorn, Abraham
IPC分类号： G11B5/02 , G11B15/02 , G11B33/14
CPC分类号： G11B33/144 , G11B5/02 , G11B5/035
摘要： The device for recording an information signal on a magnetic record carrier (2) comprises a write amplifier (3), a magnetic head (4) of the magnetoresistive type, and compensation means for controlling the amplitude of the write current in dependence upon temperature variations which occur during recording. The compensation means comprise actuator means for bringing the record carrier into contact with the magnetic head (4) before a recording is started. In addition, detection means (17, 18) have been provided to detect an output signal of the magnetic head produced as a result of the magnetic head being brought into contact with the record carrier. Control signal generator means (17) generate a control signal whose magnitude is a measure of the magnitude of the output signal. The compensation means (3, 5, 8, 11, 17) are adapted to control the amplitude of the write current in dependence upon the control signal.
摘要翻译：用于在磁记录载体（2）上记录信息信号的装置包括写放大器（3），磁阻型磁头（4）和用于根据温度变化控制写入电流的幅度的补偿装置这在录制过程中发生。补偿装置包括用于在记录开始之前使记录载体与磁头（4）接触的致动器装置。此外，已经提供检测装置（17,18）来检测由于磁头与记录载体接触而产生的磁头的输出信号。控制信号发生器装置（17）产生一个控制信号，其幅度是输出信号幅度的量度。补偿装置（3,5,8,11,17）适于根据控制信号控制写入电流的幅度。

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