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1. 发明申请

WO00058951A1 MAGNETIC HEAD DRIVE CIRCUIT AND MAGNETIC RECORDER 审中-公开
标题翻译：磁头驱动电路和磁记录仪
公开(公告)号：WO00058951A1
公开(公告)日：2000-10-05
申请号：PCT/JP2000/001978
申请日：2000-03-29
IPC分类号： G11B5/00 , G11B5/012 , G11B5/02 , G11B5/09 , G11B11/105 , H03K17/687
CPC分类号： G11B5/09 , G11B5/012 , G11B5/02 , G11B11/10508 , G11B2005/0013 , H03K17/6872
摘要： A magnetic head drive circuit (15) comprises a control circuit (20) for receiving a recording signal for recording a signal on a recording medium by use of magnetism and generating a control signal according to the recording signal and a switch circuit (30) including switching FETs (31 to 34) for changing the direction of current made to flow through a field coil (16) of a magnetic head (14) according to the control signal. The switching FETs are Pch FETs (31, 32) and Nch FETs (33, 34). The maximum of the gate voltage of the switching FETs is lower than the voltage (Vd) of a coil power supply for supplying the current flowing through the field coil (16) and higher than the gate threshold voltage of the switching FETs.
摘要翻译：磁头驱动电路（15）包括控制电路（20），用于通过使用磁场接收用于在记录介质上记录信号的记录信号，并根据记录信号产生控制信号;以及开关电路（30），包括用于根据控制信号改变流过磁头（14）的励磁线圈（16）的电流的方向的开关FET（31至34）。开关FET是Pch FET（31,32）和Nch FET（33,34）。开关FET的栅极电压的最大值低于用于供给流过励磁线圈（16）的电流的线圈电源的电压（Vd），并且高于开关FET的栅极阈值电压。

2. 发明申请

WO9963530A9 A MAGNETO-OPTICAL RECORDING SYSTEM EMPLOYING LINEAR RECORDING AND PLAYBACK CHANNELS 审中-公开
标题翻译：采用线性记录和回放通道的磁光记录系统
公开(公告)号：WO9963530A9
公开(公告)日：2000-03-30
申请号：PCT/US9912231
申请日：1999-06-02
申请人： SEAGATE TECHNOLOGY
发明人： HUBER WILLIAM D
IPC分类号： G11B7/004 , G11B11/105 , G11B20/10 , G11B7/00 , G11B11/10
CPC分类号： G11B11/10515 , G11B7/004 , G11B11/10508 , G11B11/10591 , G11B11/10593 , G11B20/10
摘要： A magneto-optical recording system achieves improved bandwidth efficiency using a modulated recording signal, recording channel linearization, and a MO medium having a low inter-granular exchange coupling and abrupt flux transitions.
摘要翻译：磁光记录系统使用调制记录信号，记录信道线性化和具有低粒间交换耦合和突变通量跃迁的MO介质来实现改进的带宽效率。

3. 发明申请

WO2002103692A1 MAGNETO-OPTICAL RECORDING FOR IMPROVED DOMAIN EXPANSION READING 审中-公开
标题翻译：用于改进域扩展读取的磁光记录
公开(公告)号：WO2002103692A1
公开(公告)日：2002-12-27
申请号：PCT/IB2002/002197
申请日：2002-06-11
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V.
发明人： VERSCHUREN, Coen, A. , VAN ROMPAEY, Bart , BLOM, Paulus, W., M. , HORIKX, Jeroen, J., L. , VAN KESTEREN, Hans, W.
IPC分类号： G11B11/105
CPC分类号： G11B11/10528 , G11B11/10508 , G11B11/10513 , G11B11/10515
摘要： The present invention relates to magneto-optical recording technique whereby improved domain expansion reading is achieved. A mark region is recorded as a sub-mark portion and an adjacent sub-space portion, wherein the length of the sub-mark portion is set to be less than or equal to the length of the sub-space portion. Stray field variations due to different runlengths of the recording data can thus be equalized even for short channel bit lengths, while the resolution and/or power margin is improved.
摘要翻译：本发明涉及磁光记录技术，从而实现了改进的域扩展读取。标记区域被记录为子标记部分和相邻子空间部分，其中子标记部分的长度设置为小于或等于子空间部分的长度。因此，即使对于短通道位长度而言，由于记录数据的不同行程长度而导致的杂散场变化可以被均衡，同时提高了分辨率和/或功率余量。

4. 发明申请

WO99050833A1 METHOD AND APPARATUS FOR MAGNETIC RECORDING 审中-公开
标题翻译：用于磁记录的方法和装置
公开(公告)号：WO99050833A1
公开(公告)日：1999-10-07
申请号：PCT/JP1999/000546
申请日：1999-02-09
IPC分类号： G11B5/00 , G11B5/02 , G11B5/127 , G11B5/64 , G11B5/74 , G11B5/855 , G11B9/00 , G11B11/105 , G11C11/14 , G11C11/16 , G11C19/08
CPC分类号： B82Y10/00 , G11B5/00 , G11B5/02 , G11B5/1278 , G11B5/64 , G11B5/74 , G11B5/855 , G11B9/1409 , G11B11/10508 , G11B11/10517 , G11B11/10528 , G11B11/10584 , G11C11/14 , G11C11/16 , G11C19/08
摘要： A method and apparatus for high-density magnetic recording carried out in spins. A recording media (1) has recording tracks (3) composed of an array of recorded spins (2). The recording media (1) comprises very thin magnetic film on which an array of positive and negative spins (2) are recorded.
摘要翻译：用于在旋转中进行的高密度磁记录的方法和装置。记录介质（1）具有由记录旋转阵列（2）组成的记录轨迹（3）。记录介质（1）包括非常薄的磁性膜，其上记录有正和负旋转阵列（2）。

5. 发明申请

WO1990015409A1 MAGNETIC FIELD MODULATION CONTROL CIRCUIT FOR RECORDING A MAGNETO-OPTIC MEMORY 审中-公开
标题翻译：用于记录磁光记忆体的磁场调制控制电路
公开(公告)号：WO1990015409A1
公开(公告)日：1990-12-13
申请号：PCT/FR1990000386
申请日：1990-06-01
申请人： THOMSON-CSF , LEHUREAU, Jean-Claude
发明人： THOMSON-CSF
IPC分类号： G11B11/10
CPC分类号： G11B11/10508
摘要： A magnetic field modulation circuit for recording a magneto-optic memory. Said circuit comprises, mounted in parallel, a fist coil (1) which generates a magnetic field of which the polarity is defined by the information bearing signal, a capacitor (c) and a switching circuit (S1), the opening and closing of the switching circuit being controlled by a first fixed-length pulse (G) generated at each moment of transition of the information-bearing signal to be recorded. The invention applies to magneto-optic memories.
摘要翻译：一种用于记录磁光存储器的磁场调制电路。所述电路包括并联安装的第一线圈（1），其产生由信息承载信号限定极性的磁场，电容器（c）和开关电路（S1），所述第一线圈开关电路由在要记录的信息承载信号的每个转变时刻产生的第一固定长度脉冲（G）控制。本发明适用于磁光存储器。

6. 发明申请

WO1990010290A1 CIRCUIT ARRANGEMENT FOR REVERSING A MAGNETIC FIELD 审中-公开
标题翻译：用于反转磁场的电路布置
公开(公告)号：WO1990010290A1
公开(公告)日：1990-09-07
申请号：PCT/EP1990000297
申请日：1990-02-22
申请人： DEUTSCHE THOMSON-BRANDT GMBH , ZUCKER, Friedhelm
发明人： DEUTSCHE THOMSON-BRANDT GMBH
IPC分类号： G11B11/10
CPC分类号： H03K17/662 , G11B5/02 , G11B11/10508 , G11B11/10595
摘要： Magneto-optical devices for recording and reproducing comprise an electromagnet which reverses the magnetization of the magneto-optical layer of the magneto-optical disk in function of the bits to be stored. To ensure rapid and reliable reversal of the magnetic field, a series circuit consisting of a first and a second diode (D1, D2), a series circuit consisting of a third and a fourth diode (D3, D4) and a constant voltage source (U) are connected in parallel. The common connection (A) of the first and second diodes (D1, D2) is connected to the common connection (B) of the third and fourth diodes (D3, D4) by a coil (L). The second diode (D2) is bridged by a first controllable switch (S1) and the fourth diode (D4) by a second controllable switch (S2). One input of a current sensor (SF) is connected to one connection (A) of the coil (L) by a third controllable switch (S3) and to the other connection (B) by a fourth controllable switch (S4). The other input of the current sensor (SF) is connected to the common connection point of the first and third diodes (D1, D3). The output of the current sensor (SF) is connected to the input of a control circuit (S) whose outputs (A1, A2, A3, A4) are connected to the control inputs of the controllable switches (S1, S2, S3, S4). The diodes (D1, D2, D3, D4) are poled in the non-conducting direction to the constant voltage source (U). Application: magnetic and magneto-optical recording devices.
摘要翻译：用于记录和再现的磁光装置包括电磁体，其根据要存储的位的功能来反转磁光盘的磁光层的磁化。为了确保快速可靠地反转磁场，由第一和第二二极管（D1，D2）组成的串联电路，由第三和第四二极管（D3，D4）和恒定电压源（ U）并联连接。第一和第二二极管（D1，D2）的公共连接（A）通过线圈（L）连接到第三和第四二极管（D3，D4）的公共连接（B）。第二二极管（D2）由第一可控开关（S1）和第四二极管（D4）由第二可控开关（S2）桥接。电流传感器（SF）的一个输入通过第三可控开关（S3）连接到线圈（L）的一个连接（A），并通过第四可控开关（S4）连接到另一个连接（B）。电流传感器（SF）的另一输入端连接到第一和第三二极管（D1，D3）的公共连接点。电流传感器（SF）的输出连接到其输出（A1，A2，A3，A4）连接到可控开关（S1，S2，S3，S4）的控制输入端的控制电路（S）的输入端）。二极管（D1，D2，D3，D4）以非导通方向极化到恒压源（U）。应用：磁光和磁光记录装置。

7. 发明申请

WO2004057579A3 ENHANCED DATA STORAGE AND RETRIEVAL DEVICES AND SYSTEMS AND METHODS FOR UTILIZING SAME 审中-公开
标题翻译：增强的数据存储和检索设备和系统及其使用方法
公开(公告)号：WO2004057579A3
公开(公告)日：2006-11-02
申请号：PCT/US0337253
申请日：2003-11-20
申请人： BERKSHIRE LAB INC , BROOKS JULIANA H J , MORTENSON MARK G
发明人： BROOKS JULIANA H J , MORTENSON MARK G
IPC分类号： G11B11/00 , G11B5/02 , G11B5/596
CPC分类号： G11B11/10508 , G11B5/02 , G11B5/0275 , G11B11/10515 , G11B11/10532 , G11B11/10547 , G11B11/10584
摘要： The present invention relates generally to the storage and/or retrieval of information on magnetic storage media by using one or more novel approaches alone or in combination. These novel approaches are capable of using at least one code which may comprise more than two values (i.e., more than a "0" and a "1"). A series of approaches applies generally to existing electric and/or magnetic storage/retrieval systems (e.g., magnetic, magneto-optic, etc.) as well as other novel electrical/magnetic systems. Each series of approaches is capable of storing information in one or more codes, wherein such approaches permit, if desired, the use of at least one higher order code which is different from the traditional binary code of "0's" and "l's" currently utilized for the storage of digital information. Said at least one higher order code may comprise three or more optical and/or magnetic values or bits that are used to represent, for example, ASCII or Unicode characters that are currently represented predominately by the traditional binary code. This higher order code may also be an analog or analog-like code.
摘要翻译：本发明一般涉及通过单独或组合地使用一种或多种新颖方法来存储和/或检索磁性存储介质上的信息。这些新颖的方法能够使用至少一个可以包括多于两个值（即大于“0”和“1”）的代码。一系列方法通常适用于现有的电和/或磁存储/检索系统（例如，磁，磁光等）以及其它新颖的电/磁系统。每一系列方法能够将信息存储在一个或多个代码中，其中如果需要，这样的方法允许使用与当前使用的“0”和“1”的传统二进制代码不同的至少一个更高阶代码用于存储数字信息。所述至少一个较高阶代码可以包括用于表示例如主要由传统二进制代码表示的ASCII或Unicode字符的三个或更多个光学和/或磁性值或位。该较高阶代码也可以是模拟或类似模拟的代码。

8. 发明申请

WO9963539A9 EFFICIENT LINEARIZATION OF SATURATION CHANNELS 审中-公开
标题翻译：饱和通道的有效线性化
公开(公告)号：WO9963539A9
公开(公告)日：2000-07-20
申请号：PCT/US9912288
申请日：1999-06-02
申请人： SEAGATE TECHNOLOGY
发明人： HUBER WILLIAM D , SMITH ROBERT F , AULTMAN TERRY A , KUKLEWICZ JOHN C
IPC分类号： G11B5/00 , G11B5/012 , G11B5/03 , G11B5/09 , G11B7/004 , G11B11/105 , G11B20/10 , G11B7/00 , G11B11/10
CPC分类号： G11B5/09 , G11B5/012 , G11B5/03 , G11B7/004 , G11B11/10508 , G11B11/10515 , G11B20/10 , G11B2005/0029
摘要： Data storage in general, but most advantageously in Magneto-Optical data storage utilizing linear data storage without significant SNR loss.
摘要翻译：通常数据存储，但最有利的是利用线性数据存储的磁光数据存储，而没有显着的SNR损失。

9. 发明申请

WO9963539A8 EFFICIENT LINEARIZATION OF SATURATION CHANNELS 审中-公开
标题翻译：饱和通道的有效线性化
公开(公告)号：WO9963539A8
公开(公告)日：2000-04-27
申请号：PCT/US9912288
申请日：1999-06-02
申请人： SEAGATE TECHNOLOGY
发明人： HUBER WILLIAM D , SMITH ROBERT F , AULTMAN TERRY A , KUKLEWICZ JOHN C
IPC分类号： G11B5/00 , G11B5/012 , G11B5/03 , G11B5/09 , G11B7/004 , G11B11/105 , G11B20/10 , G11B7/00 , G11B11/10
CPC分类号： G11B5/09 , G11B5/012 , G11B5/03 , G11B7/004 , G11B11/10508 , G11B11/10515 , G11B20/10 , G11B2005/0029
摘要： Data storage in general, but most advantageously in Magneto-Optical data storage utilizing linear data storage without significant SNR loss.
摘要翻译：通常数据存储，但最有利的是在使用线性数据存储而没有显着的SNR损失的磁光数据存储中。

10. 发明申请

WO1997048094A1 MAGNETO-OPTICAL RECORDING MEDIUM 审中-公开
标题翻译：磁光记录介质
公开(公告)号：WO1997048094A1
公开(公告)日：1997-12-18
申请号：PCT/JP1997002064
申请日：1997-06-13
申请人： SEIKO EPSON CORPORATION , ISHIDA, Masaya , KAWASE, Takeo
发明人： SEIKO EPSON CORPORATION
IPC分类号： G11B11/10
CPC分类号： G11B11/10584 , G11B11/10508 , G11B11/10591 , Y10S428/90 , Y10T428/26 , Y10T428/265
摘要： Information is recorded correctly even if the magnetic field of the magnetic field modulation recording is weak. A recording film which is composed of a recording layer (13) and an antiferromagnetic layer (14) is a part of a magneto-optical recording medium. The thickness of the antiferromagnetic layer (14) is less than 150 ANGSTROM . Letting the Curie point of the recording layer (13) be Tc1 and the Née1 point of the antiferromagnetic layer (14) be Tc2, the relation Tc2 > Tc1 is satisfied.
摘要翻译：即使磁场调制记录的磁场较弱，也能正确记录信息。由记录层（13）和反铁磁层（14）组成的记录膜是磁光记录介质的一部分。反铁磁性层（14）的厚度小于150安培。使记录层（13）的居里点为Tc1，反铁磁层（14）的Née1点为Tc2，满足关系式Tc2> Tc1。

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