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1. 发明申请

US20070140094A1 OPTICAL DISK AND OPTICAL DISK REPRODUCING DEVICE 审中-公开
标题翻译：光盘和光盘再现设备
公开(公告)号：US20070140094A1
公开(公告)日：2007-06-21
申请号：US11462938
申请日：2006-08-07
申请人： Takayuki SHIMA , Junji TOMINAGA , Takashi NAKANO , Takashi KIKUKAWA , Narutoshi FUKUZAWA , Tatsuhiro KOBAYASHI , Joo-ho KIM , In-oh HWANG
发明人： Takayuki SHIMA , Junji TOMINAGA , Takashi NAKANO , Takashi KIKUKAWA , Narutoshi FUKUZAWA , Tatsuhiro KOBAYASHI , Joo-ho KIM , In-oh HWANG
IPC分类号： G11B7/24
CPC分类号： G11B7/252 , G11B7/00455 , G11B7/24
摘要： An optical disk primarily includes a recording layer and a viscosity-variable material layer. When a laser beam is irradiated to reproduce a record written on the recording layer, part of the crystalline thin layer of the viscosity-variable material layer is softened to vary the optical constant of the softened region. Consequently, a plane having discontinuous optical constants is produced at the boundary between the softened region and the other region, so that a ring-shaped specific region is produced in a light spot. The ring-shaped specific region allows record patterns smaller than or equal to the resolution limit to be reproduced with the same signal intensity as that of the other record patterns larger than the resolution limit.
摘要翻译：光盘主要包括记录层和粘性可变材料层。当照射激光束以再现记录在记录层上的记录时，粘性可变材料层的结晶薄层的一部分被软化以改变软化区域的光学常数。因此，在软化区域和其他区域之间的边界处产生具有不连续光学常数的平面，从而在光斑中产生环形特定区域。环形特定区域允许以与分辨率极限大的其他记录图案的信号强度相同的信号强度再现小于或等于分辨率极限的记录图案。

2. 发明申请

US20130258514A1 MICROWAVE-ASSISTED MAGNETIC RECORDING DEVICE AND METHOD USING NON-CONSTANT MICROWAVE 有权
标题翻译：微波辅助磁记录装置及使用非恒定微波的方法
公开(公告)号：US20130258514A1
公开(公告)日：2013-10-03
申请号：US13436563
申请日：2012-03-30
申请人： Tatsuhiro KOBAYASHI , Yoshikazu Soeno , Akimasa Kaizu
发明人： Tatsuhiro KOBAYASHI , Yoshikazu Soeno , Akimasa Kaizu
IPC分类号： G11B21/02 , G11B5/09
CPC分类号： G11B5/314 , G11B2005/0024
摘要： A magnetic recording device includes a magnetic disk and a magnetic head that performs magnetic recording to the magnetic disk. The magnetic head includes a main magnetic pole layer and a microwave generating element. The magnetic recording device further includes a microwave generating element driving current control circuit. The microwave generating element driving current control circuit, during the magnetic recording, applies a microwave generating element driving current at a first current level to the microwave generating element for a period that is from at the latest a polarity reversal of the recording current before a subsequent polarity reversal of the recording voltage, and thereafter applies another microwave generating element driving current at a second current level, which is smaller than the first current level, to the microwave generating element, or stops the application of the another microwave generating element driving current until the polarity reversal of the recording voltage.
摘要翻译：磁记录装置包括对磁盘执行磁记录的磁盘和磁头。磁头包括主磁极层和微波产生元件。磁记录装置还包括微波产生元件驱动电流控制电路。微波发生元件驱动电流控制电路在磁记录期间将微波产生元件的第一电流电平施加到微波产生元件一段时间，该时间周期是在之前的记录电流的极性反转之前极性反转，然后将微波产生元件的第二电流水平的微波产生元件驱动电流（小于第一电流电平）施加到微波产生元件，或停止施加另一个微波产生元件的驱动电流直到记录电压的极性反转。

3. 发明申请

US20080158718A1 MAGNETIC RECORDING MEDIUM, RECORDING AND REPRODUCING DEVICE, MAGNETIC RECORDING MEDIUM-MAGNETIZING METHOD, AND MAGNETIC RECORDING MEDIUM-MAGNETIZING DEVICE 失效
标题翻译：磁记录介质，记录和再现装置，磁记录介质磁化方法和磁记录介质磁化装置
公开(公告)号：US20080158718A1
公开(公告)日：2008-07-03
申请号：US11965091
申请日：2007-12-27
申请人： Tatsuhiro KOBAYASHI , Makoto MORIYA
发明人： Tatsuhiro KOBAYASHI , Makoto MORIYA
IPC分类号： G11B5/596
CPC分类号： G11B5/59688
摘要： A magnetic recording medium enhances the quality of a reproducing signal. The magnetic recording medium has a servo pattern formed in a servo pattern area on at least one surface of a disk-shaped substrate by a concave/convex pattern having convex portions (recording areas) and concave portions (non-recording areas), and a data track pattern formed by the concave/convex pattern in a data recording area on the at least one surface of the disk-shaped substrate. In a state where recording data is not recorded in the data recording area, the convex portions in the servo pattern area are DC-magnetized, and the convex portions in the data recording area are AC-magnetized.
摘要翻译：磁记录介质提高再现信号的质量。磁记录介质具有通过具有凸部（记录区域）和凹部（非记录区域）的凹凸图案形成在盘状基板的至少一个表面上的伺服图案区域中的伺服图案，以及在盘状基板的至少一个表面上的数据记录区域中由凹/凸图案形成的数据轨道图案。在记录数据没有记录在数据记录区域的状态下，伺服图案区域中的凸部被直流磁化，并且数据记录区域中的凸部被AC磁化。

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