公开(公告)号：US06952380B2

公开(公告)日：2005-10-04

申请号：US10138568

申请日：2002-05-06

申请人： Fumio Isshiki ,  Atsuko Kuroda ,  Takayuki Ichihara ,  Masafumi Mochizuki ,  Takuya Matsumoto

发明人： Fumio Isshiki ,  Atsuko Kuroda ,  Takayuki Ichihara ,  Masafumi Mochizuki ,  Takuya Matsumoto

IPC分类号： G11B5/64 ,  G11B5/00 ,  G11B5/012 ,  G11B5/02 ,  G11B5/127 ,  G11B5/66 ,  G11B5/673 ,  G11B11/10 ,  G11B13/04 ,  G11B7/00

CPC分类号： G11B5/66 ,  G11B5/00 ,  G11B5/012 ,  G11B5/127 ,  G11B5/1278 ,  G11B13/045 ,  G11B2005/0002 ,  G11B2005/0005 ,  G11B2005/001 ,  G11B2005/0013 ,  G11B2005/0021 ,  G11B2005/0029

摘要： A vertical magnetic recording apparatus is provided which can diminish thermal decay of magnetization to ensure a high reliability of the life of recorded information and which can stably effect the write of magnetic information. Light assist is performed by obliquely applying light to a gap between a main pole of a vertical recording head and a medium. The light is radiated from the head side of the apparatus with respect to the medium. Utilizing the present invention, the thermal decay of magnetization at room temperature is diminished, the life of the recorded information is increased, and the storage reliability of the disk is increased.

摘要翻译： 提供了一种垂直磁记录装置，其可以减少磁化的热衰减，以确保记录信息的寿命的高可靠性，并且可以稳定地影响磁信息的写入。 通过向垂直记录头的主极和介质之间的间隙倾斜地施加光来执行光辅助。 光从设备的头侧相对于介质辐射。 利用本发明，室温下磁化的热衰减减小，记录信息的寿命增加，并且磁盘的存储可靠性增加。

公开(公告)号：US20050117474A1

公开(公告)日：2005-06-02

申请号：US10933947

申请日：2004-09-03

申请人： Yoshinori Ishikawa ,  Taku Hoshizawa ,  Fumio Isshiki

发明人： Yoshinori Ishikawa ,  Taku Hoshizawa ,  Fumio Isshiki

IPC分类号： G11B7/00 ,  G11B7/09

CPC分类号： G11B7/0945 ,  G11B7/0941

摘要： Even in an optical disk which includes, within a single disk, plural record areas whose track-pitches differ from each other, a tracking parameter is adjusted in a short time and with a high accuracy. At first, an optical pickup for reading information recorded in the optical disk is displaced into a reference track-pitch area which is one of the plural record areas of the optical disk. Moreover, the tracking gain is adjusted so that the tracking servo gain in this area may exhibit a predetermined characteristic. Also, the value thus acquired is recorded into, e.g., a non-volatile memory. After that, based on the tracking parameter learned/adjusted in the reference track-pitch area, the tracking parameter in another track-pitch area is calculated using the track-pitch ratio therebetween. Thereby it becomes possible to adjust the tracking parameter in a short time and with a high accuracy.

摘要翻译： 即使在单个盘中包括轨道间距彼此不同的多个记录区域的光盘中，也可以在短时间内以高精度调整跟踪参数。 首先，用于读取记录在光盘中的信息的光学拾取器被移动到作为光盘的多个记录区域之一的参考轨道间距区域中。 此外，调整跟踪增益，使得该区域中的跟踪伺服增益可以呈现预定特性。 此外，由此获得的值被记录到例如非易失性存储器中。 之后，基于在参考轨道间距区域中学习/调整的跟踪参数，使用它们之间的轨道间距比来计算另一轨道间距区域中的跟踪参数。 由此，可以在短时间内和高精度地调整跟踪参数。

公开(公告)号：US06839142B2

公开(公告)日：2005-01-04

申请号：US10669329

申请日：2003-09-25

申请人： Fumio Isshiki ,  Masakazu Sugaya ,  Tatsundo Suzuki ,  Masahiro Yamaoka ,  Sumio Hosaka

发明人： Fumio Isshiki ,  Masakazu Sugaya ,  Tatsundo Suzuki ,  Masahiro Yamaoka ,  Sumio Hosaka

IPC分类号： G03F7/20 ,  H01J37/304 ,  G01B9/02

CPC分类号： G03F7/70775 ,  H01J37/3045 ,  H01J2237/20292

摘要： An absolute accuracy in the range from ±2 nm to ±1 nm for a displacement measurement value is provided by a laser interferometer displacement measuring system. A fluctuating error component that appears corresponding to the wave cycle of laser light is detected and subtracted from the measurement value while a stage is moving, thereby providing a high accuracy.

摘要翻译： 激光干涉仪位移测量系统提供了位移测量值在±2 nm至±1 nm范围内的绝对精度。 在阶段移动时，从测量值中检测出相应于激光波周期出现的波动误差分量，从而提供高精度。