公开(公告)号：US08041226B2

公开(公告)日：2011-10-18

申请号：US12180688

申请日：2008-07-28

申请人： Takatoshi Kato

发明人： Takatoshi Kato

IPC分类号： H04B10/00

CPC分类号： H04B10/25133 ,  H04B10/40

摘要： An optical transceiver and a method to setup the optical transceiver are disclosed, where the transceiver has a function to compensate the distortion and the dispersion due to the limited bandwidth of the electrical signal line, that of the active devices, and that of the optical fiber. The optical transceiver comprises a transmitter with an equalizer unit and a receiver also with an equalizer unit. The equalizer unit in the transmitter compensates the distortion due to the limited bandwidth of the transmission lines for the electrical signal and that of the semiconductor active device, while, the equalizer unit in the receiver compensates the dispersion due to the limited bandwidth of the optical fiber.

摘要翻译： 公开了一种用于设置光收发器的光收发器和方法，其中收发器具有补偿由于电信号线的有限带宽，有源器件和光纤的有限带宽引起的失真和色散的功能 。 光收发器包括具有均衡器单元的发射器和具有均衡器单元的接收器。 发射机中的均衡器单元由于电信号和半导体有源器件的传输线的有限带宽而补偿失真，而接收机中的均衡器单元由于光纤的有限带宽而补偿色散 。

公开(公告)号：US20110110397A1

公开(公告)日：2011-05-12

申请号：US12917479

申请日：2010-11-02

申请人： Yoshinori Mochizuki ,  Harumi Morino ,  Takatoshi Kato ,  Tsutomu Tsuboi

发明人： Yoshinori Mochizuki ,  Harumi Morino ,  Takatoshi Kato ,  Tsutomu Tsuboi

IPC分类号： H04L27/00

CPC分类号： H04W28/20

摘要： A data processor which can flexibly control bandwidth settings and setting changes is provided. The data processor controls bandwidth allocation to electronic devices participating in a communication network. The data processor has a communication section used to communicate with the electronic devices and a bandwidth management section which performs control to variably allocate, based on requests from the electronic devices, bandwidths to be used for communication by the electronic devices. In cases where an additional device is added to the communication network and an adequate bandwidth cannot be allocated to the additional device, the bandwidth management section requests another electronic device transmitting video data of a resolution higher than corresponding to the user's intention to change its data format so as to allow an adequate bandwidth to be allocated to the additional device.

摘要翻译： 提供了可灵活控制带宽设置和设置更改的数据处理器。 数据处理器控制对参与通信网络的电子设备的带宽分配。 数据处理器具有用于与电子设备进行通信的通信部件和执行基于来自电子设备的请求可变地分配用于由电子设备进行通信的带宽的控制的带宽管理部件。 在附加设备被添加到通信网络并且足够的带宽不能被分配给附加设备的情况下，带宽管理部分请求另一电子设备传送高于对应于用户改变其数据格式的意图的分辨率的视频数据 以便允许将足够的带宽分配给附加设备。

公开(公告)号：US20100061737A1

公开(公告)日：2010-03-11

申请号：US12555113

申请日：2009-09-08

申请人： Takatoshi Kato

发明人： Takatoshi Kato

IPC分类号： H04B10/12 ,  H04B10/06

CPC分类号： H04B10/6971

摘要： An optical receiver is disclosed in which the error rate for the received data may be effectively reduced even for the non-linear optical transmission system that provides a directly modulate laser diode as the optical transmitter and the single mode fiber inevitably accompanying with the dispersion as the transmission medium. The optical receiver includes a photodiode (PD), a low-pass filter (LPF) and a maximum likelihood sequence estimator (MLSE) carrying out the Viterbi algorithm. The LPF in front of the MLSE effectively suppresses the ringing appeared in the received signal to generate a replica data with good reproducibility.

摘要翻译： 公开了一种光接收器，其中即使对于提供直接调制激光二极管作为光发射机的非线性光传输系统也可以有效地减少接收数据的误码率，并且单模光纤不可避免地伴随着色散 传输介质。 光接收器包括执行维特比算法的光电二极管（PD），低通滤波器（LPF）和最大似然序列估计器（MLSE）。 MLSE前面的LPF有效地抑制了接收信号中出现的振铃，以产生具有良好重现性的复制数据。

公开(公告)号：US20090222798A1

公开(公告)日：2009-09-03

申请号：US12332397

申请日：2008-12-11

申请人： Shinya IGUCHI ,  Takatoshi Kato ,  Masaya Umemura ,  Nobuaki Kohinata ,  Yasushi Nagai ,  Hiroshi Nakagoe ,  Keitaro Okasaki ,  Hirotaka Moribe ,  Takeshi Asahi

发明人： Shinya IGUCHI ,  Takatoshi Kato ,  Masaya Umemura ,  Nobuaki Kohinata ,  Yasushi Nagai ,  Hiroshi Nakagoe ,  Keitaro Okasaki ,  Hirotaka Moribe ,  Takeshi Asahi

IPC分类号： G06F9/45

CPC分类号： G06F8/52

摘要： A mobile device includes a memory for storing therein a subroutine management table to manage kinds of existing codes out of native code, first code and second code for a plurality of subroutines contained in content, a virtual machine, a precompile circuit for producing second code from first code and a subroutine management circuit for changing over processing in accordance with the kind of existing code for subroutine called up during execution of content. The subroutine management circuit judges kind of existing code with reference to the subroutine management table when the processing is changed over.

摘要翻译： 移动设备包括一个存储器，用于在其中存储子程序管理表以管理内容中的现有代码的种类，用于内容中包含的多个子程序的第一代码和第二代码，虚拟机，用于从第 第一代码和子程序管理电路，用于根据在执行内容期间调用的子程序的现有代码的种类来改变处理。 当处理转换时，子程序管理电路参考子程序管理表来判断现有代码的种类。

公开(公告)号：US20080120726A1

公开(公告)日：2008-05-22

申请号：US11905226

申请日：2007-09-28

申请人： Takashi Tsunehiro ,  Hiromi Isokawa ,  Tomihisa Hatano ,  Takatoshi Kato

发明人： Takashi Tsunehiro ,  Hiromi Isokawa ,  Tomihisa Hatano ,  Takatoshi Kato

IPC分类号： G06F7/04

CPC分类号： G06F21/79 ,  G06F21/77 ,  G06F2221/2141 ,  G06F2221/2143

摘要： To provide a mechanism for preventing information leakage by erasing stored information if a preset condition is not satisfied, because if an external storage device in which the information is stored is stolen or lost the risk of information leakage through decryption still remains even in the case where the information is encrypted. An external storage device has a locking management function capable of setting available conditions for stored information and controlling permission/prohibition of user access depending on whether the conditions are satisfied. User access is permitted if the available conditions are satisfied. The stored information is erased if the available conditions are not satisfied.

摘要翻译： 为了提供如果不满足预设条件，通过擦除存储的信息来防止信息泄漏的机制，因为如果其中存储信息的外部存储装置被盗或丢失，则即使在通过解密的情况下泄漏信息的风险仍然保持，即使在 信息被加密。 外部存储装置具有锁定管理功能，其能够根据条件是否满足来设置存储信息的可用条件和控制用户访问的许可/禁止。 如果满足可用条件，则允许用户访问。 如果可用条件不满足，则存储的信息被擦除。

公开(公告)号：US20080109549A1

公开(公告)日：2008-05-08

申请号：US11572444

申请日：2005-01-27

申请人： Kazushi Nakagawa ,  Takatoshi Kato ,  Takashi Tsunehiro

发明人： Kazushi Nakagawa ,  Takatoshi Kato ,  Takashi Tsunehiro

IPC分类号： G06F1/00 ,  G06F15/00 ,  G06F17/00

CPC分类号： G06F21/10 ,  G06F2221/0797 ,  G06F2221/2137

摘要： The service provider stores a program to use a service and license information in a memory card including an IC card chip, a flash memory, and an interface controller. According to the license information, the user can select a specification of a server PC on the service provider side and uses a server PC, which is maintained by the service provider, by use of the memory card through remote operation. Also, when the user reports the loss of the memory card to the service provider, a managing server on the service provider side sends a card function inactivation command to the memory card to prevent its false use.

摘要翻译： 服务提供商存储在包括IC卡芯片，闪存和接口控制器的存储卡中使用服务和许可信息的程序。 根据许可信息，用户可以通过远程操作使用存储卡，在服务提供方侧选择服务器PC的规格，并使用服务提供商维护的服务器PC。 此外，当用户将存储卡的丢失报告给服务提供商时，服务提供商侧的管理服务器向存储卡发送卡功能失活命令以防止其错误使用。

公开(公告)号：US20050041316A1

公开(公告)日：2005-02-24

申请号：US10914243

申请日：2004-08-10

申请人： Takatoshi Kato ,  Takushi Nishiya ,  Hideyuki Yamakawa ,  Takashi Nara ,  Nobuaki Nakai ,  Hiroshi Ide ,  Shintaro Suzumura ,  Terumi Takashi

发明人： Takatoshi Kato ,  Takushi Nishiya ,  Hideyuki Yamakawa ,  Takashi Nara ,  Nobuaki Nakai ,  Hiroshi Ide ,  Shintaro Suzumura ,  Terumi Takashi

IPC分类号： G11B5/012 ,  G11B5/09 ,  G11B20/10 ,  G11B20/14 ,  G11B20/20

CPC分类号： G11B20/10009 ,  G11B5/012 ,  G11B5/09 ,  G11B20/1403

摘要： In order to generate a sampling clock having a higher accuracy, a synchronous signal generating circuit is provided with a phase error detector, detecting a phase error of a read out signal digitized on the basis of FDTS algorithm, and a VCO, controlling an oscillation frequency on the basis of a phase error detected by the phase error detector, to generate a synchronous signal by the VCO. On the basis of the synchronous signal generated by the synchronous signal generating circuit, an ADC digitizes the read out signal. The digitized read out signal is then converted to binary data by a detection circuit.

公开(公告)号：US06748152B2

公开(公告)日：2004-06-08

申请号：US10098172

申请日：2002-03-15

申请人： Yuji Kubo ,  Masashi Onishi ,  Takatoshi Kato

发明人： Yuji Kubo ,  Masashi Onishi ,  Takatoshi Kato

IPC分类号： G02B602

CPC分类号： H04B10/2916 ,  G02B6/02242 ,  G02B6/02271

摘要： The optical transmission system in accordance with the present invention is an optical transmission system in which an optical fiber transmission line is laid between a transmitting station and a receiving station, first and second optical couplers are provided on the optical fiber transmission line, a first Raman amplification pumping light source is connected to the first optical coupler, a second Raman amplification pumping light source is connected to the second optical coupler, the optical fiber transmission line Raman-amplifies signal light in S band when Raman amplification pumping light is supplied thereto while transmitting the signal light, and the optical fiber transmission line has a zero-dispersion wavelength of 1350 nm to 1440 nm and a cable cutoff wavelength of less than 1368 nm.

摘要翻译： 根据本发明的光传输系统是一种光传输系统，其中在发射站和接收站之间铺设光纤传输线，第一和第二光耦合器设置在光纤传输线上，第一拉曼 放大泵浦光源连接到第一光耦合器，第二拉曼放大泵浦光源连接到第二光耦合器，当传输拉曼放大泵浦光时，光纤传输线拉曼放大S波段中的信号光 信号光和光纤传输线具有1350nm至1440nm的零色散波长和小于1368nm的电缆截止波长。

公开(公告)号：US06681072B2

公开(公告)日：2004-01-20

申请号：US09939741

申请日：2001-08-28

申请人： Katsuya Nagayama ,  Kiichiro Kawasaki ,  Takatoshi Kato

发明人： Katsuya Nagayama ,  Kiichiro Kawasaki ,  Takatoshi Kato

IPC分类号： G02B602

CPC分类号： G02B6/03655 ,  C03B37/01413 ,  C03B37/01446 ,  C03B37/02718 ,  C03B37/029 ,  C03B2201/12 ,  C03B2201/20 ,  C03B2203/22 ,  C03B2205/56 ,  C03B2207/30 ,  C03C13/04 ,  G02B6/0281 ,  G02B6/0286 ,  G02B6/03627 ,  G02B6/03644 ,  Y02P40/57

摘要： An optical fiber comprising a core region 100 doped with Cl which raises the refractive index; and a cladding region 200, provided at the outer periphery of the core region 100, having a cladding layer 201 doped with F which lowers the refractive index is formed. The cladding region 201 to become the outermost cladding layer is configured such that the doping amount of F successively decreases within an outer peripheral part 205 including the outer periphery thereof to a predetermined doping amount which is the minimum doping amount of F within the cladding layer 201. Therefore, the stress within the optical fiber is dispersed into the outer peripheral part 205 having an enhanced viscosity, whereby the stress concentration into the core is suppressed. Since the favorable tension range at the time of drawing the optical fiber becomes wider at this time, tension control is facilitated.

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.