专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

11. 发明授权

US6125084A Optical disk device using a recording medium structurally arranged to generate a recording clock 失效
标题翻译：使用结构地布置成产生记录时钟的记录介质的光盘装置
公开(公告)号：US6125084A
公开(公告)日：2000-09-26
申请号：US11486
申请日：1998-02-04
申请人： Hirofumi Sukeda , Hideki Saga
发明人： Hirofumi Sukeda , Hideki Saga
IPC分类号： G11B7/0045 , G11B7/125 , G11B11/105 , G11B11/00
CPC分类号： G11B7/1267 , G11B11/1051 , G11B11/10517 , G11B11/1053 , G11B11/10563 , G11B11/10521 , G11B7/00456
摘要： A high-speed large capacity file system is built in which the track density is improved by applying a highly precise magnetic domain width control technique to a light pulse-irradiated magnetic field modulation magnetooptical disk device which can be overwritten and is suitable for the improvement of the bit density. For the purpose, bipolar magnetic domains having edges of positive and negative polarities with respect to the direction of movement of a light spot are formed and the recording condition is optimized. Normal recording is carried out on the basis of the result of the optimization of the recording condition.
摘要翻译： PCT No.PCT / JP95 / 01585第 371日期：1998年2月4日 102（e）1998年2月4日PCT PCT 1995年8月9日PCT公布。公开号WO97 / 06530 日期1997年2月20日内置高速大容量文件系统，通过对能够被覆盖的光脉冲照射磁场调制磁光盘装置应用高度精确的磁畴宽度控制技术来改善轨道密度，并且是适合改善位密度。为此，形成了具有相对于光斑移动方向具有正极性和负极性边缘的双极性磁畴，并优化了记录条件。基于记录条件优化的结果进行正常记录。

12. 发明授权

US08154823B2 Information recording and reproducing apparatus, information recording and reproducing system, information processing apparatus and information reproducing apparatus 有权
标题翻译：信息记录和再现装置，信息记录和再现系统，信息处理装置和信息再现装置
公开(公告)号：US08154823B2
公开(公告)日：2012-04-10
申请号：US12486014
申请日：2009-06-17
申请人： Hideki Saga , Masaki Nagashima
发明人： Hideki Saga , Masaki Nagashima
IPC分类号： G11B5/596
CPC分类号： G11B5/5552 , G11B5/596
摘要： An information recording and reproducing apparatus 1 having a high efficiency of information transfer includes one or more recording media forming a plurality of recording surfaces, a plurality of heads respectively disposed on the recording surfaces, a first actuator for supporting the heads and moving the heads uniformly, a plurality of second actuators provided one for an associated one of the heads, the second actuators moving the heads independently relative to the first actuator, recording processing circuits for simultaneously outputting recording signals, and reproducing processing circuits simultaneously supplied with reproduced signals read out by the heads to reproduce information from the reproduced signals.
摘要翻译：具有高信息传递效率的信息记录和再现装置1包括形成多个记录表面的一个或多个记录介质，分别设置在记录表面上的多个记录头，用于支撑头部并均匀地移动头部的第一致动器，多个第二致动器，其设置为一个用于相关联的一个头部，第二致动器相对于第一致动器独立地移动头部，用于同时输出记录信号的记录处理电路，以及再现处理电路，同时提供由磁头从再现的信号中再现信息。

13. 发明授权

US07747810B2 Address assigning method, disk drive, and data writing method 有权
标题翻译：地址分配方法，磁盘驱动器和数据写入方式
公开(公告)号：US07747810B2
公开(公告)日：2010-06-29
申请号：US11645254
申请日：2006-12-21
申请人： Tetsuya Uemura , Hideki Saga
发明人： Tetsuya Uemura , Hideki Saga
IPC分类号： G06F12/00
CPC分类号： G11B20/1217 , G11B2020/1238 , G11B2020/1247 , G11B2020/1248 , G11B2020/1267 , G11B2020/1292 , G11B2020/1294 , G11B2220/2516
摘要： Embodiments in accordance with the present invention enable a disk drive of an address system to write data normally, wherein track groups of different track widths are discretely disposed on the storage medium in a same disk drive and the dimensional relationship among physical block addresses of a sector is valid for the dimensional relationship among logical block addresses. Track groups are managed corresponding to their respective track width in a disk drive and for disposing successively in a logical block address space the respective track groups located discretely on the physical block address space.
摘要翻译：根据本发明的实施例使得地址系统的磁盘驱动器能够正常地写入数据，其中不同磁道宽度的磁道组在相同的磁盘驱动器中离散地布置在存储介质上，并且扇区的物理块地址之间的尺寸关系对于逻辑块地址之间的维度关系是有效的。轨道组根据磁盘驱动器的各自的磁道宽度进行管理，并且连续地在逻辑块地址空间中分别放置在物理块地址空间上的各个磁道组。

14. 发明授权

US07446969B2 Thermally assisted recording system 有权
标题翻译：热辅助记录系统
公开(公告)号：US07446969B2
公开(公告)日：2008-11-04
申请号：US11134088
申请日：2005-05-19
申请人： Fumiko Akagi , Masukazu Igarashi , Hideki Saga
发明人： Fumiko Akagi , Masukazu Igarashi , Hideki Saga
IPC分类号： G11B5/02
CPC分类号： G11B5/66 , G11B5/02 , G11B5/656 , G11B11/10536 , G11B11/10584 , G11B11/10586 , G11B2005/001 , G11B2005/0021 , H01F10/137 , H01F10/16
摘要： A thermally assisted magnetic recording system is provided to achieve excellent thermal resistance and low noise. In one embodiment, a magnetic recording medium is used, in which the magnetic intergrain exchange coupling is large to let the magnetization be thermally stable by coupling the magnetic grains constituting the recording layer at room temperature (the temperature maintaining the magnetization) and reduced by heating during recording to let the recording magnetization transition slope become steep. Parameter A normalizing the slope around the coercivity of the MH-loop of the medium is 1.5≦A
摘要翻译：提供热辅助磁记录系统以实现优异的耐热性和低噪音。在一个实施例中，使用磁记录介质，其中磁性颗粒间交换耦合大以通过在室温下（构成记录层的磁性颗粒）（保持磁化的温度）并通过加热而减小而使磁化热稳定在记录期间使记录磁化转变斜率变得陡峭。参数A围绕介质MH环的矫顽力的斜率标准化在室温下为1.5 <= A <6.0，加热时变为约1.0。

15. 发明申请

US20080168278A1 Information recording/reproducing device and information recording medium 失效
标题翻译：信息记录/再现装置和信息记录介质
公开(公告)号：US20080168278A1
公开(公告)日：2008-07-10
申请号：US12006698
申请日：2008-01-04
申请人： Hideki Saga , Tatsuya Hirai
发明人： Hideki Saga , Tatsuya Hirai
IPC分类号： H04L9/06
CPC分类号： G06F21/80 , G06F21/31 , G06F21/6218 , G06F2221/2133
摘要： Embodiments of the present invention help to protect user data in its entirety from any unauthorized access, by making encryption key data used to encrypt the user data not available for reading, when a user having an authorized access right does not access an information recording medium for a predetermined length of time. According to one embodiment, through use of a magnetic disk in which a data losing time of an encryption key data recording area is shorter than a data losing time in a user data recording area, recording is performed to the magnetic disk while encrypting user data during recording, and encryption key data for use with encryption is recorded in the encryption data recording area. For reproduction of the user data by a user having an authorized access right, the encryption key data is read from the encryption key data recording area, and the user data encrypted during the recording is output while being decrypted using an encryption key generated by the encryption key data, and the encryption key data is overwritten on the encryption key data recording area.
摘要翻译：本发明的实施例有助于通过制作用于加密不可用于读取的用户数据的加密密钥数据来保护用户数据全部免受任何未经授权的访问，当具有授权访问权限的用户不访问用于预定的时间长度。根据一个实施例，通过使用其中加密密钥数据记录区域的数据丢失时间短于用户数据记录区域中的数据丢失时间的磁盘，在磁盘中执行记录，同时在记录和加密密钥数据被记录在加密数据记录区中。为了由具有授权访问权限的用户再现用户数据，从加密密钥数据记录区读取加密密钥数据，并且在使用由加密产生的加密密钥进行解密的同时输出在记录期间加密的用户数据密钥数据和加密密钥数据被重写在加密密钥数据记录区域上。

16. 发明申请

US20050259343A1 Thermally assisted recording system 有权
标题翻译：热辅助记录系统
公开(公告)号：US20050259343A1
公开(公告)日：2005-11-24
申请号：US11134088
申请日：2005-05-19
申请人： Fumiko Akagi , Masukazu Igarashi , Hideki Saga
发明人： Fumiko Akagi , Masukazu Igarashi , Hideki Saga
IPC分类号： G11B5/64 , G11B5/00 , G11B5/02 , G11B5/65 , G11B5/66 , G11B5/706 , H01F10/13 , H01F10/16 , G11B5/82
CPC分类号： G11B5/66 , G11B5/02 , G11B5/656 , G11B11/10536 , G11B11/10584 , G11B11/10586 , G11B2005/001 , G11B2005/0021 , H01F10/137 , H01F10/16
摘要： A thermally assisted magnetic recording system is provided to achieve excellent thermal resistance and low noise. In one embodiment, a magnetic recording medium is used, in which the magnetic intergrain exchange coupling is large to let the magnetization be thermally stable by coupling the magnetic grains constituting the recording layer at room temperature (the temperature maintaining the magnetization) and reduced by heating during recording to let the recording magnetization transition slope become steep. Parameter A normalizing the slope around the coercivity of the MH-loop of the medium is 1.5≦A
摘要翻译：提供热辅助磁记录系统以实现优异的耐热性和低噪声。在一个实施例中，使用磁记录介质，其中磁性颗粒间交换耦合大以通过在室温下（构成记录层的磁性颗粒）（保持磁化的温度）并通过加热而减小而使磁化热稳定在记录期间使记录磁化转变斜率变得陡峭。参数A围绕介质MH环的矫顽力的斜率标准化在室温下为1.5 <= A <6.0，加热时变为约1.0。

17. 发明申请

US20050237890A1 Information recording method and apparatus with suppressed mark edge jitters 有权
标题翻译：具有抑制标记边缘抖动的信息记录方法和装置
公开(公告)号：US20050237890A1
公开(公告)日：2005-10-27
申请号：US11170154
申请日：2005-06-30
申请人： Makoto Miyamoto , Tsuyoshi Toda , Masatoshi Ohtake , Motoyasu Terao , Junko Ushiyama , Keikichi Andoo , Yumiko Anzai , Akemi Hirotsune , Tetsuya Nishida , Hideki Saga
发明人： Makoto Miyamoto , Tsuyoshi Toda , Masatoshi Ohtake , Motoyasu Terao , Junko Ushiyama , Keikichi Andoo , Yumiko Anzai , Akemi Hirotsune , Tetsuya Nishida , Hideki Saga
IPC分类号： G11B7/00 , G11B5/09 , G11B7/004 , G11B7/0045 , G11B7/0055 , G11B7/006 , G11B7/125 , G11B7/126 , G11B20/10 , G11B20/14
CPC分类号： G11B7/0062 , G11B7/00454 , G11B7/00557 , G11B7/006 , G11B7/126 , G11B20/10009 , G11B20/1426
摘要： Recording information is disclosed in which an information recording medium is irradiated with a recording energy beam that is power-modulated into at least a record power level and a record-ready power level lower than the record power level. The information is recorded on the recording medium in the form of length and interval of a mark portion. When forming a mark portion of a predetermined length, the radiation energy of the energy beam is increased as compared with when forming a mark portion of a different length before or after the first pulse of an energy beam pulse train including at least a pulse for forming the mark portion.
摘要翻译：公开了一种信息记录介质，其被记录能量束照射，所述记录能量束被功率调制成至少记录功率电平和低于记录功率电平的记录就绪功率电平。信息以标记部分的长度和间隔的形式记录在记录介质上。当形成预定长度的标记部分时，与在至少包括用于形成的脉冲的能量束脉冲串的第一脉冲之前或之后形成不同长度的标记部分相比，能量束的辐射能量增加标记部分。

18. 发明授权

US06842415B2 Information recording method and apparatus with suppressed mark edge jitters 有权
公开(公告)号：US06842415B2
公开(公告)日：2005-01-11
申请号：US10600442
申请日：2003-06-23
申请人： Makoto Miyamoto , Tsuyoshi Toda , Masatoshi Ohtake , Motoyasu Terao , Junko Ushiyama , Keikichi Andoo , Yumiko Anzai , Akemi Hirotsune , Tetsuya Nishida , Hideki Saga
发明人： Makoto Miyamoto , Tsuyoshi Toda , Masatoshi Ohtake , Motoyasu Terao , Junko Ushiyama , Keikichi Andoo , Yumiko Anzai , Akemi Hirotsune , Tetsuya Nishida , Hideki Saga
IPC分类号： G11B7/00 , G11B5/09 , G11B7/004 , G11B7/0045 , G11B7/0055 , G11B7/006 , G11B7/125 , G11B7/126 , G11B20/10 , G11B20/14
CPC分类号： G11B7/0062 , G11B7/00454 , G11B7/00557 , G11B7/006 , G11B7/126 , G11B20/10009 , G11B20/1426
摘要： A method for recording information is disclosed in which an information recording medium is irradiated with a recording energy beam power-modulated into at least a record power level and a record-ready power level lower than the record power level. When forming a mark portion of a predetermined length, the radiation energy of the energy beam is increased as compared with when forming a mark portion of a different length before or after the first pulse of an energy beam pulse train including at least a pulse for forming the mark portion. Also, only in the case where the energy beam is modulated by the power lower in power level than the record-ready power level after the last pulse of the energy beam pulse train including at least one pulse for forming a mark portion and the mark portion is followed by a space portion of a predetermined length, the particular radiation energy of low power level is reduced as compared with when the mark portion is followed by a space potion of a different length. The radiation energy is increased and/or decreased.

19. 发明授权

US06809908B1 Light induction type thin film magnetic head 失效
标题翻译：感光型薄膜磁头
公开(公告)号：US06809908B1
公开(公告)日：2004-10-26
申请号：US10069668
申请日：2002-05-20
申请人： Kenchi Ito , Hideki Saga , Hiroaki Nemoto , Tomohiro Okada
发明人： Kenchi Ito , Hideki Saga , Hiroaki Nemoto , Tomohiro Okada
IPC分类号： G11B539
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/127 , G11B5/1278 , G11B5/3163 , G11B5/3903 , G11B5/3909 , G11B5/3967 , G11B7/1387 , G11B11/10534 , G11B11/10554 , G11B11/1058 , G11B2005/0002 , G11B2005/0005 , G11B2005/001 , G11B2005/0021
摘要： A light induction type thin film magnetic recording head according to the present invention includes a lower magnetic core (2) formed on a substrate, an upper magnetic core (6) whose front end part is connected to the lower magnetic core through a magnetic gap film and whose rear end part is directly connected to the lower magnetic core with a back contact part (11) formed of a magnetic substance, and an insulating layer (3) formed between the upper magnetic core and the lower magnetic core, characterized in that an optically transparent waveguide part (5) whose width is smaller than the width of the upper magnetic core and whose thickness is thinner than the thickness of the upper magnetic core is buried in the upper magnetic core, and a coil (8) which generates magnetic flux in a magnetic circuit composed of the upper magnetic core, lower magnetic core, magnetic gap, and back contact part is arranged around the back contact part.
摘要翻译：根据本发明的感光型薄膜磁记录头包括形成在基板上的下磁芯（2），上磁芯（6），其前端部通过磁隙膜连接到下磁芯并且其后端部由与磁性物质形成的背接触部（11）直接连接到下磁芯，以及形成在上磁芯与下磁芯之间的绝缘层（3），其特征在于，光学透明的波导部分（5）的宽度小于上磁芯的宽度，其厚度比上磁芯的厚度薄，埋在上磁芯中，并且产生磁通量的线圈（8）在由上磁芯，下磁芯，磁隙和后接触部构成的磁路中，配置在后接触部的周围。

20. 发明授权

US06614737B2 Optical reproduction method and optical information device 失效
公开(公告)号：US06614737B2
公开(公告)日：2003-09-02
申请号：US10076149
申请日：2002-02-15
申请人： Harukazu Miyamoto , Hideki Saga , Seiji Yonezawa
发明人： Harukazu Miyamoto , Hideki Saga , Seiji Yonezawa
IPC分类号： G11B700
CPC分类号： G11B7/005 , G11B11/10515
摘要： An optical reproduction apparatus includes a light source which irradiates irradiation light onto a recording medium, the irradiation light being reflected by the recording medium to produce reflection light, a modulator which repetitively pulse modulates the irradiation light to produce irradiation light pulses, a photodetector which detects reflection light from the recording medium at more than two timings during each of the irradiation light pulses, and outputs detection signals respectively representative of the reflection light detected at the more than two timings during each of the irradiation light pulses, and an operation circuit which performs an operation between the detection signals outputted from the photodetector during each of the irradiation light pulses.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式