公开(公告)号：US4882718A

公开(公告)日：1989-11-21

申请号：US154240

申请日：1988-02-10

Applicant: Mark H. Kryder ,  Han-Ping D. Shieh

Inventor： Mark H. Kryder ,  Han-Ping D. Shieh

IPC: G11B11/105 ,  G11B20/18 ,  G11B27/034 ,  G11B27/036

CPC classification number: G11B11/10517 ,  G11B11/10515 ,  G11B11/10521 ,  G11B20/1879 ,  G11B27/036 ,  G11B2220/216 ,  G11B2220/2525 ,  G11B27/034

Abstract: A magneto-optic information storage system is disclosed suitable for compensation point recording in the absence of an external bias field. The pulse of light used to erase imparts less energy than the pulse used to write. Also disclosed is a method for directly overwriting data recorded on a magneto-optic medium by applying lower energy erasing pulses of light and higher energy writing pulses.

Abstract translation: 公开了一种适用于在不存在外部偏置场的情况下进行补偿点记录的磁光信息存储系统。 用于擦除的光脉冲比用于写入的脉冲赋予能量更少的能量。 还公开了一种通过应用较低能量擦除脉冲的光和较高能量写入脉冲来直接重写记录在磁光介质上的数据的方法。

公开(公告)号：US5155643A

公开(公告)日：1992-10-13

申请号：US605513

申请日：1990-10-30

Applicant: Robert E. Jones, Jr. ,  Mark H. Kryder ,  Keith R. Mountfield ,  Javier I. Guzman

Inventor： Robert E. Jones, Jr. ,  Mark H. Kryder ,  Keith R. Mountfield ,  Javier I. Guzman

IPC: G07D5/08 ,  G01R33/06 ,  G07D7/04 ,  G07D7/20 ,  G11B5/09 ,  G11B5/39

CPC classification number: G11B5/3958 ,  G07D7/04 ,  G07D7/20 ,  G11B5/09

Abstract: An unshielded horizontal magnetoresistive head for magnetic sensing and reading devices. The horizontal unshielded magnetoresistive head is comprised of two magnetoresistive elements separated by a gap and a conductive cross member which electrically connects the magnetoresistive elements together and to a common electrical point such as system ground. A differential voltage sensing circuit is connected across the magnetoresistive elements for sensing voltage variations when magnetic data is sensed by the head. The present invention further facilitates a more simplified fabrication process which results in cost savings and more efficient fabrication methods and procedures.

Abstract translation: 用于磁感测和读取装置的非屏蔽水平磁阻头。 水平非屏蔽磁阻头包括由间隙隔开的两个磁阻元件和将磁阻元件电连接在一起的公共电点，例如系统接地的导电横向构件。 差分电压感测电路连接在磁阻元件两端，用于在磁头被磁头感测到磁数据时检测电压变化。 本发明进一步促进了更简化的制造过程，其导致成本节省和更有效的制造方法和程序。

公开(公告)号：US4670316A

公开(公告)日：1987-06-02

申请号：US702166

申请日：1985-02-15

Applicant: Mark H. Kryder

Inventor： Mark H. Kryder

IPC: G03G5/16 ,  G11B5/64 ,  H01F10/13

CPC classification number: G03G5/16 ,  G11B5/64 ,  H01F10/135 ,  Y10S428/90 ,  Y10T428/24975 ,  Y10T428/265

Abstract: Amorphous alloys of two materials having antiferromagnetically-coupled magnetization sublattices, and capable of deposition as a thin film supporting small stable domains for thermo-magnetic recording. The thin-film material is an alloy of at least one rare-earth element and a transistion-metal element. A stable domain of a few microns diameter, allowing highest density of information recording, is achieved by providing the lowest possible wall energy to the domain, with a resulting low anisotropy.

Abstract translation: 具有反铁磁耦合磁化子晶格的两种材料的非晶合金，并且能够沉积作为支持用于热磁记录的小稳定域的薄膜。 薄膜材料是至少一种稀土元素和转移金属元素的合金。 通过向结构域提供最低可能的壁能，获得最低密度的信息记录，实现几微米直径的稳定区域，从而产生低各向异性。

公开(公告)号：US4221000A

公开(公告)日：1980-09-02

申请号：US902657

申请日：1978-05-04

Applicant: Alina Deutsch ,  Mark H. Kryder ,  Walter Nystrom

Inventor： Alina Deutsch ,  Mark H. Kryder ,  Walter Nystrom

IPC: G11C11/14 ,  G11C19/08 ,  G11C19/28

CPC classification number: G11C19/0875 ,  G11C19/0866 ,  G11C19/287 ,  Y10S707/99937

Abstract: A magnetic bubble domain storage system comprising an array of rows and columns of logical chips are organized into logical half-chips with even numbered bits in one half-chip and odd numbered bits in the other half-chip. Alternating rows of half-chips are used for storing even numbered bits and odd numbered bits, respectively. Each half-chip has its own bubble domain generator, but a common generator current line serves all generators for a row of even half-chips and all generators for a row of odd half-chips. Thus, information is written into even half-chips and odd half-chips at the same time by pulsing the generator current line common to a row of even half-chips and a row of odd half-chips. Each half-chip has a sensing element and all the sensing elements corresponding to a row of half-chips are connected in series. The series connection of sensors in any row forms one leg of a bridge circuit, and another leg of the bridge circuit is another series connection of sensors in another row of the storage array. One of these legs corresponds to sensors from a row of even half-chips while the other leg corresponds to sensors from a row of odd half-chips. The other two legs of the bridge circuit are comprised of dummy resistors. Even though two rows of sensors are connected to the same bridge circuit, even numbered bits and odd numbered bits will be read at alternating times.

Abstract translation: 包括逻辑芯片的行和列的阵列的磁性气泡域存储系统被组织成在另一个半芯片中的一个半芯片和奇数位中具有偶数位的逻辑半芯片。 半芯片的交替行分别用于存储偶数位和奇数位。 每个半芯片都有自己的气泡域发生器，但是通常的发电机电流线为所有发生器提供了一行甚至半芯片，并且所有发生器都用于一排奇数半芯片。 因此，通过脉冲发生器电流线将偶数半芯片和奇数半芯片同时写入偶数半芯片行和奇数半芯片行，将信息写入偶数半芯片和奇数半芯片。 每个半芯片具有感测元件，并且对应于一行半芯片的所有感测元件串联连接。 任何行中的传感器的串联连接形成桥接电路的一条支路，桥接电路的另一条支路是存储阵列的另一行中的传感器的另一串联连接。 这些腿中的一个对应于来自一排偶数半芯片的传感器，而另一条腿对应于来自一排奇数半芯片的传感器。 桥接电路的另外两条支路由虚拟电阻组成。 即使两行传感器连接到相同的桥接电路，偶数位和奇数位将在交替时间读取。

公开(公告)号：US06771462B1

公开(公告)日：2004-08-03

申请号：US09665598

申请日：2000-09-19

Applicant: Sakhrat Khizroev ,  Dmitri Litvinov ,  Mark H. Kryder

Inventor： Sakhrat Khizroev ,  Dmitri Litvinov ,  Mark H. Kryder

IPC: G11B5187

CPC classification number: G11B5/1278 ,  G11B5/1871 ,  G11B5/3163

Abstract: A perpendicular recording head for use with magnetic recording media includes a main pole having a concave tip. The concave tip focuses the magnetic flux from the main pole onto a smaller area of the magnetic recording medium than a conventional main pole when the main pole is at its flying height from the magnetic recording medium. Although the most preferred perpendicular recording head includes a concave cavity having an elliptical profile when viewed from the side, any substantially concave cavity may be used advantageously.

Abstract translation: 用于磁记录介质的垂直记录头包括具有凹形尖端的主极。 当主极处于与磁记录介质的飞行高度时，凹形尖端将来自主极的磁通量聚焦到比常规主极小的磁记录介质的较小区域上。 虽然最优选的垂直记录头包括从侧面观察时具有椭圆形轮廓的凹腔，但是可以有利地使用任何基本上凹的腔。

公开(公告)号：US5358088A

公开(公告)日：1994-10-25

申请号：US981800

申请日：1992-11-25

Applicant: Elwood E. Barnes ,  Mark H. Kryder ,  Keith R. Mountfield

Inventor： Elwood E. Barnes ,  Mark H. Kryder ,  Keith R. Mountfield

IPC: G07D7/00 ,  G06K7/08 ,  G07D7/02 ,  G07D7/04 ,  G07D7/20 ,  G11B5/02 ,  G11B5/39

CPC classification number: G07D7/04 ,  G06K7/087 ,  G07D7/20

Abstract: An apparatus and method for detecting magnetic data on media is disclosed which utilizes an array or arrays of horizontal magnetoresistive sensors. The present invention detects the pitch or separation of magnetic transition data on the magnetic medium under test, and generates a signal that is independent of the velocity of the medium. In one embodiment, the magnetoresistive sensors employed in an array are spaced apart a distance which corresponds to the separation of magnetic transition data of interest, and the output of each sensor is connected to a voltage adder. The signal from the voltage adder is at a maximum when the separation of the magnetic transition data corresponds to the sensor separation. A comparator is connected to the output of the voltage adder, and compares the voltage adder output to a predetermined threshold voltage before indicating that a medium having a particular magnetic transition data pattern is detected. Alternate embodiments contemplate connecting linear circuitry, digital circuitry, fuzzy logic or other electronic circuitry to the array of magnetoresistive sensors. An apparatus according to the present invention is accurate, requires a minimum of parts, is simple and inexpensive to manufacture, and may be employed in a currency validator, magnetic card reader or the like.

Abstract translation: 公开了一种用于在介质上检测磁数据的装置和方法，其利用水平磁阻传感器的阵列或阵列。 本发明检测被测磁介质上的磁转移数据的间距或间隔，并产生与介质速度无关的信号。 在一个实施例中，阵列中使用的磁阻传感器间隔一段距离，其对应于感兴趣的磁转移数据的分离，并且每个传感器的输出连接到电压加法器。 当磁转移数据的分离对应于传感器分离时，来自电压加法器的信号处于最大值。 比较器连接到电压加法器的输出，并且在指示检测到具有特定磁转移数据模式的介质之前将电压加法器输出与预定阈值电压进行比较。 替代实施例考虑将线性电路，数字电路，模糊逻辑或其他电子电路连接到磁阻传感器阵列。 根据本发明的装置是准确的，需要最少的部件，制造简单且便宜，并且可以用于货币验证器，磁卡读卡器等。

公开(公告)号：US4247912A

公开(公告)日：1981-01-27

申请号：US959960

申请日：1978-11-13

Applicant: Clifton D. Cullum, Jr. ,  George E. Keefe ,  Mark H. Kryder ,  Yeong-Show Lin

Inventor： Clifton D. Cullum, Jr. ,  George E. Keefe ,  Mark H. Kryder ,  Yeong-Show Lin

IPC: G11C11/14 ,  G11C19/08

CPC classification number: G11C19/0883 ,  G11C19/0808

Abstract: In magnetic bubble domain chips using layers of crystalline material having in-plane magnetization for propagation, hard bubble suppression, etc., asymmetric propagation often results due to crystalline anisotropies in the layer of in-plane magnetization. In these chips, different propagation margins result for propagation in different directions with respect to the crystalline axes of the in-plane layer. In the present magnetic chip, a plurality of shift registers is provided for movement of bubble domains in a plurality of directions, all of which provide good propagation margins. The registers are aligned in particular directions with respect to the directions of easy stripout of bubble domains in order to avoid the problem of asymmetric propagation. Examples are shown using ion implanted contiguous element propagation patterns organized in a major/minor loop type of storage organization.

Abstract translation: 在使用具有面内磁化的结晶材料层用于传播，硬气泡抑制等的磁性气泡区域芯片中，由于平面内磁化层中的晶体各向异性，常常导致不对称传播。 在这些芯片中，不同的传播裕度导致相对于平面内层的晶轴在不同方向传播。 在本磁芯中，提供多个移位寄存器用于在多个方向上移动气泡畴，所有这些均提供良好的传播裕度。 为了避免不对称传播的问题，寄存器相对于容易脱除气泡区域的方向在特定方向上排列。 示例使用以主/次循环类型的存储组织组织的离子注入的连续元件传播模式。

公开(公告)号：US4229807A

公开(公告)日：1980-10-21

申请号：US902649

申请日：1978-05-04

Applicant: Mark H. Kryder

Inventor： Mark H. Kryder

IPC: G11C11/14 ,  G11C19/08

CPC classification number: G11C19/0858

Abstract: A magnetic bubble domain chip having two levels of metallurgy fabricated in a single masking step and including a replicate type bubble generator. The bubble generator includes a magnetic disk which holds a seed domain during reorientation of a magnetic drive field in the plane of the magnetic bubble material, and a conductor located at the leading, i.e., cutting, edge of the magnetic disk. Current in the conductor is used to assist the splitting operation whereby a new domain is split from the stretched seed domain. The conductor includes a first portion having a relatively wide cross-section where most of the current flows through a highly conductive material, such as gold. In the area of the generator, the conductor is narrow and the current path is through the magnetic material comprising the disk. Use of the magnetic material as a conductor path reduces problems due to electromigration and the generator is particularly suitable for use in providing magnetic bubble domains having diameters 2 microns and less.

Abstract translation: 具有在单个掩模步骤中制造并包括重复型气泡发生器的两级冶金的磁性气泡域芯片。 气泡生成器包括磁盘，该磁盘在磁性材料的平面内的磁驱动场的重新取向期间保持种子域，以及位于磁盘的前导切割边缘处的导体。 导体中的电流用于辅助分裂操作，从而从延伸的种子域分裂新的结构域。 导体包括具有较宽横截面的第一部分，其中大部分电流流过高导电材料，例如金。 在发电机的区域中，导体窄，电流路径通过包括盘的磁性材料。 使用磁性材料作为导体路径减少了由于电迁移引起的问题，并且发生器特别适用于提供直径为2微米或更小的磁性气泡区域。

公开(公告)号：US07394622B2

公开(公告)日：2008-07-01

申请号：US11005819

申请日：2004-12-07

Applicant: Edward Charles Gage ,  Gary Clark Rauch ,  Rene Johannes Marinus van de Veerdonk ,  Hans Juergen Richter ,  Terry Wayne McDaniel ,  Mark H. Kryder

Inventor： Edward Charles Gage ,  Gary Clark Rauch ,  Rene Johannes Marinus van de Veerdonk ,  Hans Juergen Richter ,  Terry Wayne McDaniel ,  Mark H. Kryder

IPC: G11B5/82

CPC classification number: G11B5/82 ,  G11B5/656 ,  G11B5/667 ,  G11B5/855

Abstract: A magnetic recording medium comprises a magnetically soft underlayer having a plurality of cavities in a surface thereof, and a magnetic recording material in the cavities, wherein a surface of the magnetic recording material in the cavities is substantially coplanar with the surface of the soft underlayer. A recording system that includes the recording medium is also included.

Abstract translation: 磁记录介质包括在其表面具有多个空腔的磁软底层和空腔中的磁记录材料，其中空腔中的磁记录材料的表面与软底层的表面基本上共面。 还包括包括记录介质的记录系统。

公开(公告)号：US5863661A

公开(公告)日：1999-01-26

申请号：US634051

申请日：1996-04-17

Applicant: Xiaoyu Sui ,  James A. Bain ,  Mark H. Kryder

Inventor： Xiaoyu Sui ,  James A. Bain ,  Mark H. Kryder

IPC: G11B5/64 ,  G11B5/66

CPC classification number: G11B5/65 ,  G11B5/656 ,  Y10S428/90

Abstract: A method of making c-axis perpendicularly oriented barium hexaferrite thin films by the crystallization of amorphous barium hexaferrite on a platinum underlayer is provided. Using a thin underlayer of platinum, barium hexaferrite films can be deposited by conventional rf diode or magnetron sputtering. Such deposition may be performed at room temperature, after which excellent c-axis perpendicular orientation can be achieved by rapid ex-situ annealing. The c-axis perpendicular orientation can also be achieved through in-situ annealing.

Abstract translation: 提供了通过在铂底层上结晶无定形六方铁硼酸盐制造c轴垂直取向的六偏硼酸钡薄膜的方法。 使用铂的薄层，可以通过常规的rf二极管或磁控溅射沉积六方晶钡钡膜。 这种沉积可以在室温下进行，然后通过快速的非原位退火可以获得优异的c轴垂直取向。 也可以通过原位退火来实现c轴垂直取向。