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公开(公告)号：US10738174B2
公开(公告)日：2020-08-11
申请号：US13454054
申请日：2012-04-23
申请人： Krishna M. Bajjuri , David Berman , Qiu Dai , Pierre-Olivier Jubert , Hareem T. Maune , Alshakim Nelson
发明人： Krishna M. Bajjuri , David Berman , Qiu Dai , Pierre-Olivier Jubert , Hareem T. Maune , Alshakim Nelson
摘要： The present invention relates to a water-soluble polymer complex that includes a water-soluble block copolymer and a magnetic nanoparticle, wherein the water-soluble polymer complex has a nonzero net magnetic moment in the absence of an applied magnetic field at ambient temperatures. The water-soluble block copolymer is preferably a diblock or triblock copolymer and the magnetic nanoparticle is preferably a ferrimagnetic or ferromagnetic nanoparticle. The water-soluble complexes may be derivatized with reactive groups and conjugated to biomolecules. Exemplary water-soluble polymer complexes covered under the scope of the invention include PEG112-b-PAA40 modified CoFe2O4; NH2-PEG112-b-PAA40 modified CoFe2O4; PNIPAM68-b-PAA28 modified CoFe2O4; and mPEG-b-PCL-b-PAA modified CoFe2O4.
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2.发明授权Writing timing-based servo patterns in perpendicular and non-oriented magnetic media 失效在垂直和非定向磁性介质中编写基于时序的伺服模式公开(公告)号：US08693127B2
公开(公告)日：2014-04-08
申请号：US13014924
申请日：2011-01-27
摘要： A method and apparatus for bipolar writing of servo marks to perpendicular and non-oriented magnetic recording medium. The method includes applying a varying current to a servo write head to alternately AC-erase and write sets of servo marks to regions of a servo track of a magnetic recording medium proximate to first and second write gaps, each servo mark of the sets of servo marks comprising first and second abutting magnetic domains of opposite magnetization directions, the magnetic recording medium moving with respect to the first and second write gaps in a recording direction, the magnetic recording medium being either (i) a perpendicular magnetic storage medium having magnetic particles with their easy axes oriented perpendicular to a top surface of the perpendicular storage medium or (ii) a non-oriented magnetic storage medium having magnetic particles with their easy axes randomly oriented relative to a top surface of the non-orientated storage medium.
摘要翻译： 一种用于将伺服标记双极写入垂直和非取向磁记录介质的方法和装置。 该方法包括：向伺服写头施加变化的电流，以交替地擦写和写入伺服标记集合到接近第一和第二写入间隙的磁记录介质的伺服磁道的区域，伺服机构的每个伺服标记 包括相对磁化方向的第一和第二邻接磁畴的标记，磁记录介质在记录方向上相对于第一和第二写入间隙移动，磁记录介质为（i）具有磁性颗粒的垂直磁存储介质， 其易于轴垂直于垂直存储介质的顶表面定向，或（ii）具有磁性颗粒的非取向磁存储介质，其易轴相对于非取向存储介质的顶表面随机取向。
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3.发明申请TAPE DRIVE HEAD WITH JOINTLY OPTIMIZED SHIELD-TO-SHEILD GAP AND SENSOR WIDTH 有权带有最佳优化的屏蔽 - 皮瓣和传感器宽度的带状驱动头公开(公告)号：US20130100554A1
公开(公告)日：2013-04-25
申请号：US13277378
申请日：2011-10-20
申请人： Robert G. Biskeborn , Giovanni Cherubini , Simeon Furrer , Pierre-Olivier Jubert , Mark A. Lantz
发明人： Robert G. Biskeborn , Giovanni Cherubini , Simeon Furrer , Pierre-Olivier Jubert , Mark A. Lantz
IPC分类号： G11B5/584
CPC分类号： G11B5/584 , G11B5/00826 , G11B5/11 , G11B5/3146
摘要： A tape drive head includes a set of one or more servo readers designed for reading a servo pattern of a linear recording tape for positioning of the tape drive head, each of the servo readers of the set having: a sensor for sensing a magnetic field component of a servo pattern upon reading it; a first shield and a second shield, one on each side of the sensor, the shields configured to shield spurious components of magnetic fields occurring upon reading the linear recording tape, wherein: a gap between the first shield and the second shield is between 0.4 μm and 1 μm, and a minimal width of the sensor, the first shield and the second shield, in a direction perpendicular to the gap, is between 0.5 μm and 4 μm.
摘要翻译： 磁带驱动器头包括一组一个或多个伺服读取器，设计用于读取用于定位磁带驱动器磁头的线性记录磁带的伺服模式，该组伺服读取器具有：用于感测磁场分量的传感器 读取伺服模式时; 第一屏蔽和第二屏蔽，在传感器的每一侧上的一个屏蔽层，被配置为屏蔽在读取线性记录带时发生的磁场的杂散分量，其中：第一屏蔽和第二屏蔽之间的间隙在0.4μm之间 和1um，并且在垂直于间隙的方向上的传感器，第一屏蔽和第二屏蔽的最小宽度在0.5μm和4μm之间。
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公开(公告)号：US08416537B2
公开(公告)日：2013-04-09
申请号：US12614275
申请日：2009-11-06
申请人： David Berman , Robert G. Biskeborn , Michel Despont , Philipp Herget , Wayne Isami Imaino , Pierre-Olivier Jubert , Peter V. Koeppe , Chandrasekhar Narayan
发明人： David Berman , Robert G. Biskeborn , Michel Despont , Philipp Herget , Wayne Isami Imaino , Pierre-Olivier Jubert , Peter V. Koeppe , Chandrasekhar Narayan
IPC分类号： G11B5/39
CPC分类号： G11B5/3163 , G11B5/00826 , G11B5/398
摘要： In one embodiment, a read sensor for a recording head for a magnetic media storage system, has first and second shields, and a magneto-resistive sensor disposed between and shielded by the first and second shields in which the sensing axis of the sensor is tilted with respect to the recording surface of the head. In one embodiment, the sensing axis is oriented at an angle between 10 and 60 degrees with respect to the normal of the recording surface. Other embodiments are described and claimed.
摘要翻译： 在一个实施例中，用于磁性介质存储系统的记录头的读取传感器具有第一和第二屏蔽以及设置在第一和第二屏蔽之间并被传感器的感测轴倾斜的屏蔽的磁阻传感器 相对于头部的记录表面。 在一个实施例中，感测轴相对于记录表面的法线定向成10度至60度的角度。 描述和要求保护其他实施例。
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公开(公告)号：US08310777B2
公开(公告)日：2012-11-13
申请号：US12556452
申请日：2009-09-09
IPC分类号： G11B15/12
CPC分类号： G11B5/00813 , G11B5/00826 , G11B20/10009
摘要： In one general embodiment, a recording system controller includes a controller controlling a timing of flux switching of adjacent pairs of writers such that the writers in a given pair do not switch substantially concurrently, and reducing a current of one of the writers in the pair while the adjacent writer is writing a transition. In another general embodiment, a recording system controller includes a controller controlling a timing of pulse writing of adjacent pairs of writers such that the writers in a given pair do not pulse substantially concurrently. In yet another general embodiment, a method includes controlling a timing of pulse writing or flux switching of adjacent pairs of writers such that the writers in a given pair do not pulse or switch substantially concurrently.
摘要翻译： 在一个一般实施例中，记录系统控制器包括一个控制器，用于控制相邻的写入器对的通量切换定时，使得给定对中的写入器基本上并行地切换，并减少一对中的一个写入器的电流，同时 相邻的作家正在写一个过渡。 在另一个一般实施例中，记录系统控制器包括控制相邻成对写入器的脉冲写入定时的控制器，使得给定对中的写入器基本上不同时脉冲。 在另一个一般实施例中，一种方法包括控制相邻写入器对的脉冲写入或磁通切换的定时，使得给定对中的写入器不基本同时脉冲或切换。
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6.发明申请WRITING TIMING-BASED SERVO PATTERNS IN PERPENDICULAR AND NON-ORIENTED MAGNETIC MEDIA 失效基于时序的伺服模式在非对称磁性介质中的应用公开(公告)号：US20120194941A1
公开(公告)日：2012-08-02
申请号：US13014924
申请日：2011-01-27
摘要： A method and apparatus for bipolar writing of servo marks to perpendicular and non-oriented magnetic recording medium. The method includes applying a varying current to a servo write head to alternately AC-erase and write sets of servo marks to regions of a servo track of a magnetic recording medium proximate to first and second write gaps, each servo mark of the sets of servo marks comprising first and second abutting magnetic domains of opposite magnetization directions, the magnetic recording medium moving with respect to the first and second write gaps in a recording direction, the magnetic recording medium being either (i) a perpendicular magnetic storage medium having magnetic particles with their easy axes oriented perpendicular to a top surface of the perpendicular storage medium or (ii) a non-oriented magnetic storage medium having magnetic particles with their easy axes randomly oriented relative to a top surface of the non-orientated storage medium.
摘要翻译： 一种用于将伺服标记双极写入垂直和非取向磁记录介质的方法和装置。 该方法包括：向伺服写头施加变化的电流，以交替地擦写和写入伺服标记集合到接近第一和第二写入间隙的磁记录介质的伺服磁道的区域，伺服机构的每个伺服标记 包括相对磁化方向的第一和第二邻接磁畴的标记，磁记录介质在记录方向上相对于第一和第二写入间隙移动，磁记录介质为（i）具有磁性颗粒的垂直磁存储介质， 其易于轴垂直于垂直存储介质的顶表面定向，或（ii）具有磁性颗粒的非取向磁存储介质，其易轴相对于非取向存储介质的顶表面随机取向。
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公开(公告)号：US20120019954A1
公开(公告)日：2012-01-26
申请号：US12839515
申请日：2010-07-20
IPC分类号： G11B21/02
CPC分类号： G11B5/584 , G11B5/00826
摘要： A method and apparatus for bipolar servo marks writing with high output. The method includes providing a servo write head having first and second write gaps; and applying a varying current comprising either (i) abrupt changes in current in combination with current ramps or (ii) patterns of high-frequency current pulses before and after writing servo marks to a medium proximate to and moving past the first and second write gaps. The apparatus includes a bipolar servo write driver configured to generate a varying bipolar current signal having both negative and positive polarity currents and a servo write head having a first write gap and second write gap spaced apart, the varying current signal comprising either (i) abrupt changes in current in combination with current ramps or (ii) patterns of high-frequency current pulses before and after low-frequency pulses and a component to move a medium proximate to and past the first and second write gaps.
摘要翻译： 一种高输出双极伺服标记写入的方法和装置。 该方法包括提供具有第一和第二写入间隙的伺服写入头; 以及施加变化的电流，其包括（i）电流突然变化与电流斜坡的组合，或（ii）在将伺服标记写入到接近并移动经过第一和第二写入间隙的介质之前和之后的高频电流脉冲的图案 。 该装置包括双极性伺服写入驱动器，其被配置为产生具有负极性和正极性电流的变化双极性电流信号，以及具有间隔开的第一写入间隙和第二写入间隙的伺服写入头，所述变化的电流信号包括（i）突发 结合电流斜坡的电流变化或（ii）低频脉冲之前和之后的高频电流脉冲的模式，以及移动靠近并超过第一和第二写间隙的介质的分量。
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8.发明申请ELECTRONIC CARD AND METHOD FOR GENERATING A MAGNETIC FIELD FROM SWIPING THE ELECTRONIC CARD THROUGH A CARD READER 失效用于产生磁场的电子卡和方法通过卡读取器来驱动电子卡公开(公告)号：US20110108626A1
公开(公告)日：2011-05-12
申请号：US12613751
申请日：2009-11-06
CPC分类号： G06K7/00 , G06K19/06206
摘要： An electronic card and a method for processing data stored in the electronic card. The electronic card includes a memory containing data to be read by a card reader. The electronic card may include a programmable field source containing wire structures geometrically configured and energized in a manner that drives an electric current through only two wire structures at a time for generating a time varying magnetic field that induces a readback signal in the card reader as the electronic card is being swiped through the card reader. An electrical current in at least one wire in the electronic card generates a time varying magnetic field and may include a finite time derivative of electrical current whose magnitude does not exceed a specified maximum time derivative of electrical current corresponding to a peak voltage threshold (Vth) and an overshoot ratio (f) of the card reader.
摘要翻译： 一种用于处理存储在电子卡中的数据的电子卡和方法。 该电子卡包括一个存储器，该存储器包含读卡器读取的数据。 电子卡可以包括可编程场源，其包含几何地构造和通电的线结构，其方式是一次驱动电流仅通过两个线结构，用于产生时变磁场，其引起读卡器中的回读信号为 电子卡正在通过读卡器擦拭。 电子卡中的至少一根导线中的电流产生时变磁场，并且可以包括电流的有限时间导数，其幅度不超过对应于峰值电压阈值（Vth）的规定的电流最大时间导数， 和读卡器的过冲比（f）。
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9.发明授权Writing and reading multi-level patterned magnetic recording media, with more than two recording levels 失效写和读多层次磁记录介质，具有两个以上的记录级别公开(公告)号：US08085502B2
公开(公告)日：2011-12-27
申请号：US12615290
申请日：2009-11-10
IPC分类号： G11B5/66
摘要： A method and apparatus for writing magnetization states in magnetic islands of a multi-level patterned magnetic recording medium with more than two recording levels and a method and apparatus for reading readback waveforms representing written magnetization states of the magnetic islands in the multi-level patterned magnetic recording medium. Writing each magnetization state includes selecting the magnetization state, determining a write current sufficient to write the magnetization state, and applying the write current to a magnetic write head to write the magnetization state, including simultaneously writing associated magnetic states in each magnetic island of at least one pair of magnetic islands. Reading the readback waveform representing a written magnetization state is implemented through use of a magnetic read head and includes: identifying the written magnetization state by decoding the readback waveform; and displaying and/or recording the written magnetization state.
摘要翻译： 一种用于在具有多于两个记录电平的多电平图案化磁记录介质的磁岛中写入磁化状态的方法和装置，以及用于读取表示多级图案化磁场中的磁岛的写入磁化状态的读回波形的方法和装置 记录介质。 写入每个磁化状态包括选择磁化状态，确定足以写入磁化状态的写入电流，以及向磁性写入头施加写入电流以写入磁化状态，包括同时在至少每个磁性岛中写入相关联的磁状态 一对磁岛。 通过使用磁读头实现读取表示书写磁化状态的回读波形，包括：通过解码回读波形来识别写入的磁化状态; 并显示和/或记录写入的磁化状态。
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10.发明授权Writing and reading multi-layer continuous magnetic recording media, with more than two recording layers 失效写和阅读多层连续磁记录介质，具有两个以上的记录层公开(公告)号：US08031425B2
公开(公告)日：2011-10-04
申请号：US12615375
申请日：2009-11-10
IPC分类号： G11B5/02
CPC分类号： G11B5/02 , G11B5/66 , G11B2005/0002 , G11B2005/0021 , G11B2005/0024
摘要： A method and apparatus for writing magnetization states in magnetic layers of a multi-layer continuous magnetic recording medium with more than two recording levels and a method and apparatus for reading readback pulse shapes representing a magnetization state transition between such written magnetization states. Writing each magnetization state includes selecting the magnetization state, determining a write current sufficient to write the magnetization state, and applying the write current to a magnetic write head to write the magnetization state, including simultaneously writing associated magnetic states in each magnetic layer of at least one pair of magnetic layers. A readback pulse shape representing a written magnetization state transition is read. The written magnetization state transition is uniquely identified from the readback pulse shape of the transition or from both the readback pulse shape of the transition and the readback pulse shape of one or more contiguous magnetization state transitions.
摘要翻译： 一种用于在具有两个以上记录电平的多层连续磁记录介质的磁性层中写入磁化状态的方法和装置以及用于读取表示这种书写磁化状态之间的磁化状态转变的读回脉冲形状的方法和装置。 写入每个磁化状态包括选择磁化状态，确定足以写入磁化状态的写入电流，以及向磁性写入头施加写入电流以写入磁化状态，包括同时将至少在每个磁性层中写入相关联的磁状态 一对磁性层。 读取表示写入的磁化状态转变的回读脉冲形状。 从转换的回读脉冲形状或从转换的回读脉冲形状和一个或多个连续磁化状态转变的回读脉冲形状两者中唯一地识别写入的磁化状态转变。
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