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81. 发明授权

US06606000B2 Radio-frequency amplifier, radio-frequency module and communication device 失效
公开(公告)号：US06606000B2
公开(公告)日：2003-08-12
申请号：US10096885
申请日：2002-03-13
申请人： Shigeyuki Mikami , Takatoshi Kato , Hiroyasu Matsuzaki
发明人： Shigeyuki Mikami , Takatoshi Kato , Hiroyasu Matsuzaki
IPC分类号： H03F360
CPC分类号： H01P5/02
摘要： A radio-frequency amplifier comprises slot lines formed in a top electrode which are bent to define matching segments that are perpendicular to transmitting segments. The matching segments have a length corresponding to one-quarter of the wavelength of a signal to be amplified and are at least partially perpendicular to the transmitting segments. A DC-cut circuit comprising slot lines is connected to the matching segments, an FET is connected to the transmitting segments and the matching segments, and respective matching circuits serve as an input unit and an output unit of the FET. Source terminals of the FET are connected to parts of a top electrode that do not lie between the segments. A drain terminal and a gate terminal are connected, to be electrically separated from each other, to parts of the top electrode, which are electrically separated from the source terminals by the DC-cut circuit, the transmitting segments, and the matching segments.

82. 发明授权

US06515554B2 High-frequency circuit device and communication apparatus 失效
公开(公告)号：US06515554B2
公开(公告)日：2003-02-04
申请号：US09963248
申请日：2001-09-26
申请人： Yohei Ishikawa , Kenichi Iio , Takatoshi Kato , Koichi Sakamoto
发明人： Yohei Ishikawa , Kenichi Iio , Takatoshi Kato , Koichi Sakamoto
IPC分类号： H01P308
CPC分类号： H01P5/187 , H01P1/16 , H01P3/003 , H01P3/006 , H01P3/023 , H01P3/165 , H01P5/107 , H01P5/184 , H01P7/10
摘要： Electrodes are formed on both top and bottom surfaces of a dielectric plate and grounded coplanar lines, as transmission lines, are formed on the top surface of the dielectric plate. A plurality of micro-strip lines, each composed of high-impedance lines and low-impedance lines alternately connected in series, is arranged at a pitch shorter than the wavelength of a wave traveling along the grounded coplanar lines. A spurious mode propagation blocking circuit thus constructed prevents a spurious mode wave, such as a parallel-plate mode, from traveling.

83. 发明授权

US06498874B1 Optical transmission line 失效
标题翻译：光传输线
公开(公告)号：US06498874B1
公开(公告)日：2002-12-24
申请号：US09599265
申请日：2000-06-22
申请人： Takatoshi Kato , Eisuke Sasaoka , Masayuki Nishimura
发明人： Takatoshi Kato , Eisuke Sasaoka , Masayuki Nishimura
IPC分类号： G02B618
CPC分类号： G02B6/02009 , G02B6/02242 , G02B6/03644 , G02B6/03666 , G02B6/29377 , H04B10/2525
摘要： This invention relates to an optical transmission line having a structure that reduces dispersion with respect to signal light in a 1.55-&mgr;m band. Each transmission unit includes a dispersion-shifted optical fiber as a transmission medium and a mode removing unit for reducing the optical power of high-order modes excluding a fundamental mode of light signals propagating through the dispersion-shifted optical fiber. The dispersion-shifted optical fiber has an incident terminal on which the light signals are incident and an exit terminal from which the light signals are emitted, and has a cutoff wavelength longer than the wavelength of the light signals at a fiber length of 2 m. The mode removing unit has a structure for reducing the optical power of high-order modes to 1/10 or less, preferably 1/40 or less, of the optical power of the fundamental mode so as to satisfy the single-mode condition in relation to fiber length.
摘要翻译：本发明涉及一种光传输线路，其具有相对于1.55μm波段中的信号光减少色散的结构。每个发送单元包括作为传输介质的色散位移光纤和用于降低除通过色散位移光纤传播的基本模式的高阶模式的光功率的模式去除单元。色散位移光纤具有入射端子，光信号入射到入射端子，出射端子发光，并且具有比光纤长度为2μm的光信号的波长更长的截止波长。模式去除单元具有将高阶模式的光功率降低到基模的光功率的1/10以下，优选为1/40以下的结构，以满足关于单模状态的单模状态到纤维长度。

84. 发明授权

US06400877B1 Negative-dispersion optical fiber and optical transmission line incorporating the same 有权
标题翻译：负分散光纤和包含其的光传输线
公开(公告)号：US06400877B1
公开(公告)日：2002-06-04
申请号：US09879103
申请日：2001-06-13
申请人： Takatoshi Kato , Masaaki Hirano
发明人： Takatoshi Kato , Masaaki Hirano
IPC分类号： G02B602
CPC分类号： G02B6/02261 , G02B6/02004 , G02B6/0228 , G02B6/03627 , G02B6/03644 , G02B6/29377
摘要： The present invention concerns a negative-dispersion optical fiber for compensating in a shorter length for chromatic dispersion of a positive-dispersion optical fiber in a signal wavelength band, and an optical transmission line incorporating it. The negative-dispersion optical fiber has the following properties at the wavelength of 1550 nm; chromatic dispersion D of not more than −150 ps/nm/km; a dispersion slope satisfying such a condition that a ratio thereof (S/D) to the chromatic dispersion D is not less than 2.0×10−3/nm nor more than 4.7×1031 3/nm; and an effective area of not less than 12 &mgr;m2 but less than 25 &mgr;m2. For satisfying these properties, the negative-dispersion optical fiber has, in the order stated from the center toward the outer periphery, a core region of a maximum refractive index n1, a first cladding of a refractive index n2 ( n2), and a third cladding of a refractive index n4 (
摘要翻译：本发明涉及用于在信号波长带中的正色散光纤的色散在较短长度上进行补偿的负色散光纤以及包括其的光传输线。负色散光纤在1550nm的波长下具有以下性质：色散D不大于-150ps / nm / km; 满足（S / D）与色散D的比例为2.0×10 -3 / nm以上4.7×10 31 3 / nm以下的条件的色散斜率; 有效面积不低于12mum2但小于25mum2。为了满足这些特性，负色散光纤以从中心向外周的顺序具有最大折射率n1的芯区域，折射率n2（ n2）的包层和折射率n4（

85. 发明授权

US06337942B1 Optical fiber 有权
公开(公告)号：US06337942B1
公开(公告)日：2002-01-08
申请号：US09441550
申请日：1999-11-17
申请人： Takatoshi Kato , Kazuhiro Okamoto , Mitsuomi Hada , Shinjiro Hagihara , Morio Watanabe , Kohei Kobayashi
发明人： Takatoshi Kato , Kazuhiro Okamoto , Mitsuomi Hada , Shinjiro Hagihara , Morio Watanabe , Kohei Kobayashi
IPC分类号： G02B622
CPC分类号： G02B6/02014 , G02B6/02266 , G02B6/03611 , G02B6/03627
摘要： The present invention relates to an optical fiber having a large positive dispersion in a wavelength band of 1.55 &mgr;m in order to compensate for a negative dispersion inherent in an NZ-DSF in the wavelength band of 1.55 &mgr;m. This optical fiber comprises a depressed cladding structure constituted by a core region; an inner cladding, disposed at the outer periphery of the core region, having a lower refractive index; and an outer cladding having a higher refractive index. In this optical fiber, the relative refractive index difference of the core region with respect to the outer cladding is at least 0.30% but not greater than 0.50%, and the relative refractive index difference of the inner cladding with respect to the outer cladding is at least −0.50% but not greater than −0.02%. Also, the optical fiber has a dispersion greater than 18 ps/nm/km at a wavelength of 1.55 &mgr;m, and an effective cross-sectional area Aeff of at least 70 &mgr;m2 at the wavelength of 1.55 &mgr;m.

86. 发明授权

US6157754A Optical transmission line 失效
标题翻译：光传输线
公开(公告)号：US6157754A
公开(公告)日：2000-12-05
申请号：US75324
申请日：1998-05-11
申请人： Eisuke Sasaoka , Takatoshi Kato
发明人： Eisuke Sasaoka , Takatoshi Kato
IPC分类号： G02B6/00 , G02B6/02 , H04B10/25 , H04B10/2525 , G02B6/28
CPC分类号： H04B10/25253
摘要： The present invention relates to an optical transmission line, applicable to Wave Division Multiplexing (WDM) transmission, having a structure for restraining optical transmission characteristics from deteriorating due to each of the occurrence of nonlinear optical phenomena and the wavelength dispersion. This optical transmission line comprises, at least, a first optical fiber having, as characteristics at the predetermined operating wavelength, a first effective area and a first dispersion slope; and a second optical fiber having, as characteristics at the predetermined operating wavelength, a second effective area smaller than the first effective area and a second dispersion slope smaller than the first dispersion slope. In particular, the second optical fiber contributes to suppressing the deterioration in its optical transmission characteristics in the whole optical transmission line.
摘要翻译：本发明涉及一种适用于波分多路复用（WDM）传输的光传输线路，具有抑制由于非线性光学现象和波长色散引起的光传输特性劣化的结构。该光传输线至少包括作为在预定工作波长处的特性的第一有效区域和第一色散斜率的第一光纤; 以及第二光纤，其具有作为所述预定工作波长的特性的小于所述第一有效面积的第二有效面积和小于所述第一色散斜率的第二色散斜率。特别地，第二光纤有助于抑制整个光传输线路中的光传输特性的劣化。

87. 发明授权

US5128639A Phase shifter utilizing hybrid element 失效
标题翻译：移相器利用混合元件
公开(公告)号：US5128639A
公开(公告)日：1992-07-07
申请号：US698079
申请日：1991-05-10
申请人： Hiroyuki Ueda , Takatoshi Kato , Yuichi Tanaka
发明人： Hiroyuki Ueda , Takatoshi Kato , Yuichi Tanaka
IPC分类号： H01P1/185
CPC分类号： H01P1/185
摘要： A hybrid element for phase shifting an input signal and providing a phase shifted output signal includes conductive plates which are capacitive coupled together. The hybrid element includes four terminals: an input terminal for receiving an input signal, an isolation terminal capacitive coupled with the input terminal and for providing an output signal, a through terminal connected directly with the input terminal, and a coupling terminal capacitive coupled with the input terminal. A distributed constant line and an FET are connected in pair with the through and coupling terminals, respectively, the other end of the distributed constant line being connected with earth. When the FET is turned on or off, the amount of phase shift in the phase shifter is controlled. Since the FET and distributed constant line are connected together in parallel, the amount of phase shift can be adjusted easily by turning the FET on or off.
摘要翻译：用于相移输入信号并提供相移输出信号的混合元件包括电容耦合在一起的导电板。混合元件包括四个端子：用于接收输入信号的输入端子，与输入端子电容耦合并用于提供输出信号的隔离端子，直接与输入端子连接的通孔端子以及与该端子电容耦合的耦合端子输入端子。分布常数线和FET分别与通孔和耦合端子成对连接，分布常数线的另一端与地连接。当FET导通或关断时，移相器中的相移量被控制。由于FET和分布常数线路并联连接在一起，所以通过打开或关闭FET可以容易地调整相移量。

88. 发明授权

US4925810A Compound semiconductor device and a method of manufacturing the same 失效
标题翻译：化合物半导体器件及其制造方法
公开(公告)号：US4925810A
公开(公告)日：1990-05-15
申请号：US397367
申请日：1989-08-24
申请人： Hiroyuki Kano , Takatoshi Kato , Masafumi Hashimoto
发明人： Hiroyuki Kano , Takatoshi Kato , Masafumi Hashimoto
IPC分类号： H01L21/76 , H01L21/20 , H01L21/203 , H01L21/26
CPC分类号： H01L21/02546 , H01L21/02381 , H01L21/02636 , Y10S148/017 , Y10S148/026 , Y10S148/097 , Y10S148/169 , Y10S438/933 , Y10S438/938 , Y10S438/969
摘要： A compound semiconductor device comprises a substrate formed from a single crystal of silicon, a layer of an insulator formed on a portion of a surface of the substrate, at least one layer of a high resistance compound semiconductor formed on the insulator layer, and at least one layer of a single crystal of a compound semiconductor formed on a different portion of the substrate surface from the insulator layer. The device can be manufactured by forming an insulator layer on one portion of a surface of a single crystal silicon substrate, and growing a compound semiconductor by epitaxy on the insulator layer and on the different portion from the insulator layer. One of useful applications is a hybrid semiconductor device having a compound semiconductor formed from e.g. GaAs on a silicon substrate.
摘要翻译：化合物半导体器件包括由单晶硅形成的衬底，形成在衬底的表面的一部分上的绝缘体层，至少一层形成在绝缘体层上的高电阻化合物半导体，并且至少形成在与绝缘体层的衬底表面的不同部分上的化合物半导体的单晶的一层。该器件可以通过在单晶硅衬底的一个表面上形成绝缘体层并通过在绝缘体层上和绝缘体层的不同部分上的外延生长化合物半导体来制造。有用的应用之一是具有由例如化合物形成的化合物半导体的混合半导体器件。 GaAs在硅衬底上。

89. 发明授权

US09654415B2 Information processing system, management server group, and server management program 有权
公开(公告)号：US09654415B2
公开(公告)日：2017-05-16
申请号：US14395670
申请日：2012-04-20
申请人： Takatoshi Kato , Yutaka Kudo , Naoto Matsunami , Akira Fujibayashi
发明人： Takatoshi Kato , Yutaka Kudo , Naoto Matsunami , Akira Fujibayashi
IPC分类号： G06F15/173 , H04L12/917 , H04L29/06 , H04L29/08 , H04W40/20
CPC分类号： H04L47/76 , H04L65/1063 , H04L67/34 , H04W40/20
摘要： This invention includes an application server for executing an application and transmitting the execution results to a terminal or other such device connected to a network, and a management server for allocating the application and data on an application server and a storage device, respectively, wherein the management server reallocates the application execution site using: a procedure for obtaining device location information from a device via an application server and selecting, from the location information, an application server that will be the application migration destination; a procedure for indicating the migration-destination application server to the migration-source application server; and a procedure for migrating the application and the data between the application servers.

90. 发明申请

US20150163163A1 DISTRIBUTED APPLICATION AND DATA HOSTING SYSTEM 有权
标题翻译：分布式应用和数据管理系统
公开(公告)号：US20150163163A1
公开(公告)日：2015-06-11
申请号：US14395670
申请日：2012-04-20
申请人： Takatoshi Kato , Yutaka Kudo , Naoto Matsunami , Akira Fujibayashi
发明人： Takatoshi Kato , Yutaka Kudo , Naoto Matsunami , Akira Fujibayashi
IPC分类号： H04L12/917
CPC分类号： H04L47/76 , H04L65/1063 , H04L67/34 , H04W40/20
摘要： This invention includes an application server for executing an application and transmitting the execution results to a terminal or other such device connected to a network, and a management server for allocating the application and data on an application server and a storage device, respectively, wherein the management server reallocates the application execution site using: a procedure for obtaining device location information from a device via an application server and selecting, from the location information, an application server that will be the application migration destination; a procedure for indicating the migration-destination application server to the migration-source application server; and a procedure for migrating the application and the data between the application servers.
摘要翻译：本发明包括用于执行应用并将执行结果发送到连接到网络的终端或其他这样的设备的应用服务器，以及分别在应用服务器和存储设备上分配应用和数据的管理服务器，其中，管理服务器使用以下步骤重新分配应用执行站点：用于通过应用服务器从设备获取设备位置信息并从位置信息中选择将是应用迁移目的地的应用服务器的过程; 用于向迁移源应用服务器指示迁移目的地应用服务器的过程; 以及在应用服务器之间迁移应用程序和数据的过程。

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