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1. 发明申请

US20090009903A1 METHOD OF INCREASING RECORDING DENSITY OF HARD DISC DRIVE AND CONTROLLING DEVICE THEREOF 有权
标题翻译：增加硬盘驱动器的记录密度和控制装置的方法
公开(公告)号：US20090009903A1
公开(公告)日：2009-01-08
申请号：US11946074
申请日：2007-11-28
申请人： Hoo-san LEE , Hyun-jei KIM , Sung-hoon CHOA , Hoon-sang OH
发明人： Hoo-san LEE , Hyun-jei KIM , Sung-hoon CHOA , Hoon-sang OH
IPC分类号： G11B21/02
CPC分类号： G11B5/02 , G11B2005/001
摘要： Provided is a method of increasing recording density and a control apparatus for increasing the recording density. The method includes applying a recording current corresponding to a recording signal to a magnetic head of a hard disc drive (HDD), and limiting a current value being applied to the magnetic head to a critical value when the recording current reaches the critical value. In the method, a rising time is reduced by using an overshoot recording current and the recording current is limited to a critical value when an actual recording current reaches the critical value. Thus, write track widths (WTWs) can be reduced at a low recording frequency, thereby increasing tracks per inch (TPI).
摘要翻译：提供了增加记录密度的方法和用于提高记录密度的控制装置。该方法包括将对应于记录信号的记录电流施加到硬盘驱动器（HDD）的磁头，并且当记录电流达到临界值时将施加到磁头的电流值限制为临界值。在该方法中，通过使用过冲记录电流来降低上升时间，并且当实际记录电流达到临界值时，记录电流被限制在临界值。因此，可以在低记录频率下减小写轨道宽度（WTW），从而增加每英寸轨迹（TPI）。

2. 发明申请

US20090011282A1 MAGNETIC RECORDING MEDIUM, HARD DISK DRIVE EMPLOYING THE SAME, AND METHOD OF MEASURING WRITE READ OFFSET OF THE HARD DISK DRIVE 审中-公开
标题翻译：磁记录介质，使用其的硬盘驱动器以及测量硬盘驱动器的写入偏移量的方法
公开(公告)号：US20090011282A1
公开(公告)日：2009-01-08
申请号：US12018820
申请日：2008-01-24
申请人： Hoo-san LEE , Hoon-sang OH , Sung-hoon CHOA
发明人： Hoo-san LEE , Hoon-sang OH , Sung-hoon CHOA
IPC分类号： G11B5/66
CPC分类号： G11B5/59627 , B82Y10/00 , G11B5/743 , G11B5/855
摘要： A magnetic recording medium, a hard disk drive (HDD) employing the same, and a method of measuring a write read (WR) offset of the HDD are provided. The magnetic recording medium includes a disk substrate and a magnetic recording layer formed on one or both surfaces of the disk substrate, wherein the magnetic recording layer comprises: at least one pattern area patterned into a plurality of data tracks wherein the at least one pattern area is formed of a patterned magnetic substance; and at least one continuous area formed of a continuous magnetic substance, wherein the continuous area is used to measure a WR offset. Accordingly, the HDD employing the magnetic recording medium can correct the WR offset of the magnetic head without requiring large modifications.
摘要翻译：提供一种磁记录介质，采用该记录介质的硬盘驱动器（HDD）以及测量HDD的写入读取（WR）偏移的方法。磁记录介质包括形成在盘基片的一个或两个表面上的盘基片和磁记录层，其中磁记录层包括：图案化成多个数据道的至少一个图案区，其中至少一个图案区由图案化的磁性物质形成; 以及由连续磁性物质形成的至少一个连续区域，其中所述连续区域用于测量WR偏移。因此，使用磁记录介质的HDD可以校正磁头的WR偏移，而不需要大的修改。

3. 发明申请

US20090068500A1 PERPENDICULAR MAGNETIC RECORDING MEDIUM AND METHOD OF MANUFACTURING THE SAME 审中-公开
标题翻译：全能磁记录介质及其制造方法
公开(公告)号：US20090068500A1
公开(公告)日：2009-03-12
申请号：US12061823
申请日：2008-04-03
申请人： Sok-hyun KONG , Sang-hwan PARK , Hoo-san LEE , Taek-dong LEE , Hoon-sang OH
发明人： Sok-hyun KONG , Sang-hwan PARK , Hoo-san LEE , Taek-dong LEE , Hoon-sang OH
IPC分类号： G11B5/706 , B05D5/12 , C23C14/34
CPC分类号： G11B5/66 , G11B5/65 , G11B5/667 , G11B5/7325 , G11B5/851
摘要： Provided are a perpendicular magnetic recording medium and a method of manufacturing the same. The perpendicular magnetic recording medium includes: a substrate; a soft magnetic layer formed on the substrate; an underlayer formed on the soft magnetic layer; and a recording layer comprising a plurality of ferromagnetic layers and formed on the underlayer, wherein each of the plurality of ferromagnetic layers has a magnetic anisotropic energy which decreases as distance increases from the underlayer.
摘要翻译：提供了一种垂直磁记录介质及其制造方法。垂直磁记录介质包括：基板; 形成在所述基板上的软磁性层; 形成在软磁性层上的底层; 以及包括多个铁磁层并形成在所述底层上的记录层，其中所述多个铁磁层中的每一个具有随距离从所述底层距离增加而减小的磁各向异性能量。

4. 发明申请

US20090061259A1 BIT PATTERNED MEDIUM 有权
标题翻译：位图形图
公开(公告)号：US20090061259A1
公开(公告)日：2009-03-05
申请号：US12039112
申请日：2008-02-28
申请人： Hoo-san LEE , Sung-chul LEE , Hoon-sang OH
发明人： Hoo-san LEE , Sung-chul LEE , Hoon-sang OH
IPC分类号： G11B5/66 , G11B5/65
CPC分类号： G11B5/66 , G11B5/855
摘要： A bit patterned medium in which an exchange coupling layer induces exchange coupling between adjacent bits in order to reduce a switching field difference resulting from different magnetization directions of bits. The exchange coupling layer is disposed either over or under a recording layer having a plurality of bits. The exchange coupling layer induces exchange coupling between a bit which is to be recorded and an adjacent bit and reduces a switching field difference resulting from a difference between the magnetization direction of the bit to be recorded and the magnetization direction of neighboring bits due to an exchange coupling force generated during the exchange coupling.
摘要翻译：一种位图形介质，其中交换耦合层引起相邻位之间的交换耦合，以便减少由不同磁化方向引起的开关场差。交换耦合层设置在具有多个位的记录层之上或之下。交换耦合层引起要被记录的位和相邻位之间的交换耦合，并减少由于要记录的位的磁化方向与由于交换而产生的相邻位的磁化方向之间的差导致的开关场差在交换耦合期间产生的耦合力。

5. 发明申请

US20090316564A1 ELECTRIC FIELD READ/WRITE APPARATUS AND METHOD 失效
标题翻译：电场读/写装置和方法
公开(公告)号：US20090316564A1
公开(公告)日：2009-12-24
申请号：US12489560
申请日：2009-06-23
申请人： Dong-ki MIN , Hoon-sang OH
发明人： Dong-ki MIN , Hoon-sang OH
IPC分类号： G11B9/00
CPC分类号： G11B9/02 , B82Y10/00 , G11B9/1409
摘要： Provided are an electric field read/write apparatus and method, which reproduce information written in a recording medium by using an electric field read/write head including a channel. In the electric field read/write apparatus and method, an electric field generated from the recording medium is modulated by using a modulation signal, a variation in the modulated electric field is detected, and a voltage signal determined according to the detected variation is demodulated and information written in the recording medium is determined according to a result of the demodulation.
摘要翻译：提供一种电场读/写装置和方法，其通过使用包括通道的电场读/写头来再现记录在记录介质中的信息。在电场读/写装置和方法中，通过使用调制信号调制从记录介质产生的电场，检测调制电场的变化，并且解调根据检测到的变化确定的电压信号，根据解调结果确定写在记录介质中的信息。

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