公开(公告)号：US06559582B2

公开(公告)日：2003-05-06

申请号：US09971226

申请日：2001-10-03

申请人： Hiroyuki Miyamoto ,  Misao Iseki ,  Manabu Arai ,  Hideaki Tamai ,  Chikao Kimura

发明人： Hiroyuki Miyamoto ,  Misao Iseki ,  Manabu Arai ,  Hideaki Tamai ,  Chikao Kimura

IPC分类号： H01J114

CPC分类号： H01J1/144

摘要： There is provided a cathode which is easily operable, harmless, and stable at high temperature at least 1,400° C. as well as excellent in electron emission characteristics at the same time, and the process for preparing the same. The cathode of the present invention comprises a polycrystalline substance or a polycrystalline porous substance of high-melting point metal material and an emitter material dispersed into said polycrystalline substance or polycrystalline porous substance in an amount of 0.1 to 30% by weight in the cathode, wherein the emitter material comprises at least one selected from the group consisting of hafnium oxide, zirconium oxide, lanthanum oxide, cerium oxide and titanium oxide.

公开(公告)号：US20090103567A1

公开(公告)日：2009-04-23

申请号：US12222902

申请日：2008-08-19

申请人： Hideaki Tamai

发明人： Hideaki Tamai

IPC分类号： H04J13/00

CPC分类号： H04J13/00 ,  H04B1/707

摘要： A code division multiplex transmitting and receiving apparatus has a transmitting apparatus with two coders per channel and terminal units with two matched filters each. One coder and one matched filter employ one spreading code; the other coder and the other matched filter employ another spreading code. The two coded signals output in parallel by the two coders are converted to a single serial signal before being multiplexed. The two matched filters sample alternate chips in the multiplexed signal. The two coders can be supplied with different data signals to double the transmission capacity, or with the same data signal to double the transmission distance. The outputs of the two matched filters are processed separately in the former case and are combined in the latter case.

摘要翻译： 码分多路复用发送和接收装置具有每通道两个编码器的发送装置和每个具有两个匹配滤波器的终端单元。 一个编码器和一个匹配滤波器使用一个扩展码; 另一个编码器和另一个匹配滤波器使用另一个扩展码。 由两个编码器并行输出的两个编码信号在复用之前被转换成单个串行信号。 两个匹配滤波器在多路复用信号中采样备用芯片。 两个编码器可以提供不同的数据信号，使传输容量加倍，或者使用相同的数据信号将传输距离加倍。 两个匹配滤波器的输出在前一种情况下分开处理，并在后一种情况下组合。

公开(公告)号：US20070196108A1

公开(公告)日：2007-08-23

申请号：US11653351

申请日：2007-01-16

申请人： Hideaki Tamai ,  Masayuki Kashima

发明人： Hideaki Tamai ,  Masayuki Kashima

IPC分类号： H04J14/00 ,  H04J4/00

CPC分类号： H04J3/0682 ,  H04B10/506 ,  H04B10/69 ,  H04J13/00 ,  H04Q11/0067 ,  H04Q2011/0088

摘要： In 1 to N communication based on code division multiplexing, ranging is performed by following the first to ninth steps. First step: all the optical network units are set to standby status. Second step: first and second optical network units are set to transmission enable status. Third step: the phase shift amount is set for the variable phase shifters of the first and second optical network units. Fourth step: reception of a fixed signal is attempted in the optical line terminal. Fifth step: if the fixed signal is not received, processing returns to the second step, and if received, the phase amount of the variable phase shifter is defined and fixed. In the sixth to ninth steps, an operation the same as the first to fifth steps is performed for the third to N-th optical network units. In these steps, the optical line terminal receives the i-th reply signal (i is an integer in the 1 to (n−1) range and i≠n) sent from at least one i-th optical network unit out of the first to (n−1)th optical network units, and sequentially defines and fixes the phase shift amount of the variable phase shifter of the third to N-th optical network units.

摘要翻译： 在基于码分复用的1到N通信中，按照第一到第九步进行测距。 第一步：所有光网络单元都设置为待机状态。 第二步：将第一和第二光网络单元设置为传输使能状态。 第三步骤：为第一和第二光网络单元的可变移相器设置相移量。 第四步：在光线路终端中尝试接收固定信号。 第五步：如果没有接收到固定信号，则处理返回到第二步，如果接收到，则可变相移器的相位量被定义和固定。 在第六至第九步骤中，对于第三至第N光网络单元执行与第一至第五步骤相同的操作。 在这些步骤中，光线路终端从至少一个第i个光网络单元发送的第i个应答信号（i是从1到（n-1）范围内的整数，i <> n） 第一到第（n-1）个光网络单元，并且顺序地限定和固定第三到第N个光网络单元的可变移相器的相移量。

公开(公告)号：US07034988B2

公开(公告)日：2006-04-25

申请号：US10767266

申请日：2004-01-30

申请人： Hideaki Tamai ,  Saeko Oshiba

发明人： Hideaki Tamai ,  Saeko Oshiba

IPC分类号： G02F2/02 ,  G02B6/34

CPC分类号： G02B6/29376 ,  G02F1/353

摘要： A feature of a wavelength conversion device of this invention is the board range of selection of wavelengths which can be obtained by conversion. A wavelength conversion device of this invention comprises an SC light generation portion 12, which receives an excitation light pulse output from an excitation light pulse source and generates SC light, and an optical wavelength filter 14 which filters the SC light. An excitation light pulse source generates an excitation light pulse, of central wavelength λS. When the excitation light pulse generated by the excitation light pulse source is incident on the SC medium, SC light having a flat spectral shape over the range from wavelength λL to wavelength λH (where λL

公开(公告)号：US08412043B2

公开(公告)日：2013-04-02

申请号：US12805770

申请日：2010-08-19

申请人： Hideaki Tamai ,  Yasuyuki Kuroda

发明人： Hideaki Tamai ,  Yasuyuki Kuroda

IPC分类号： H04J14/00

CPC分类号： H04Q11/0067 ,  H04B10/272 ,  H04Q11/0071 ,  H04Q2011/0049 ,  H04Q2011/0079

摘要： An optical communications network that is composed of one station-side equipment being connected to plural subscriber-side equipments. The station-side equipment refers to downstream data signals and prepares transmission plans, and generates downstream control signals that include the transmission plans, and converts downstream signals, that include the downstream data signals and the downstream control signals to which identifiers indicating the subscriber-side equipments that are addressees are assigned, into downstream optical signals, and sends the downstream optical signals out toward the subscriber-side equipments. The subscriber-side equipment converts downstream optical signals into downstream electric signals, and refers to identifiers and extracts downstream electric signals addressed to itself, and reads the transmission plans, and generates timer control signals including information of receiving start times and receiving stop times, and, on the basis of the timer control signals, opens and closes a path connecting a receiving section and an electricity supply section.

摘要翻译： 由一个站侧设备连接到多个用户侧设备的光通信网络。 站侧设备是指下行数据信号，准备传输方案，并生成包含传输方案的下行控制信号，并转换下行信号，包括下行数据信号和下行控制信号，标识符表示用户侧 作为地址的设备被分配到下行光信号中，并向用户侧设备发送下行光信号。 用户侧设备将下行光信号转换为下行电信号，并指向标识符并提取寻址到其自身的下行电信号，并读取传输方案，并产生定时控制信号，包括接收开始时间和接收停止时间的信息，以及 基于定时器控制信号，打开和关闭连接接收部分和电力供应部分的路径。

公开(公告)号：US20120051752A1

公开(公告)日：2012-03-01

申请号：US13220605

申请日：2011-08-29

申请人： Hideaki Tamai ,  Akihiro Takahashi ,  Satoshi Furusawa ,  Akiya Suzuki

发明人： Hideaki Tamai ,  Akihiro Takahashi ,  Satoshi Furusawa ,  Akiya Suzuki

IPC分类号： H04B7/212 ,  H04J14/08

CPC分类号： H04Q11/0067 ,  H04J2203/0069 ,  H04Q2011/0064

摘要： A bandwidth allocator for communicating with communication terminals by transmitting and receiving data packets over a line having its communication bandwidth divided into periods of time of a predetermined length. The allocator includes a controller controlling allocation of the bandwidth by using allocation grants as the periods of time. The controller includes a scheduler scheduling the allocation grants so as to cause one allocation grant to partially overlap as a shared grant with another allocation grant adjacent to the one allocation grant. Thus, the bandwidth allocator can minimize allocation loss, otherwise caused by no allocation to an allocation grant, and improve the use efficiency of the bandwidth.

摘要翻译： 一种带宽分配器，用于通过在其通信带宽划分为预定长度的时间段的线路上发送和接收数据分组来与通信终端进行通信。 分配器包括通过使用分配授权作为时间段来控制带宽分配的控制器。 控制器包括调度分配授权的调度器，以使得一个分配授权与作为一个分配授权相邻的另一个分配授权的共享授权部分地重叠。 因此，带宽分配器可以最小化分配丢失，否则由分配授权不分配引起，并提高带宽的使用效率。

公开(公告)号：US20100150178A1

公开(公告)日：2010-06-17

申请号：US12654065

申请日：2009-12-09

申请人： Hideaki Tamai

发明人： Hideaki Tamai

IPC分类号： H04J13/00

CPC分类号： H04B1/7085 ,  H04J3/0682

摘要： There is provided a propagation delay time adjustment method for adjusting the propagation delay time occurring within a reception circuit for each channel of a center node device configuring a 1-to-N communications system in which communication is performed between the center node device and N (N being an integer of 2 or more) individual edge node devices using a Synchronous Code Division Multiplexing method, the center node device comprising a main control section, and each of the edge node devices comprising an auxiliary control section that controls the propagation delay time in cooperation with the main control section, the transmission delay time adjustment method comprising: transmission permission signal transmitting; transmission controlling; reception phase controlling; reception validity determining; optimum reception phase determining; and reception phase setting in which the main control section sets the optimum reception phase as the reception phase for the reception circuit.

摘要翻译： 提供了一种传播延迟时间调整方法，用于调整在配置1到N通信系统的中心节点设备的每个信道的接收电路内发生的传播延迟时间，其中在中心节点设备和N（ N是2以上的整数）个别边缘节点设备，所述中继节点设备包括主控制部分，并且所述边缘节点设备中的每一个包括控制所述传播延迟时间的辅助控制部分 与主控部分协作，传输延迟时间调整方法包括：传输允许信号发送; 传动控制; 接收相位控制; 接收有效性确定; 最佳接收阶段确定; 以及接收相位设置，其中主控制部分设置最佳接收相位作为接收电路的接收相位。

公开(公告)号：US20090208211A1

公开(公告)日：2009-08-20

申请号：US12320157

申请日：2009-01-21

申请人： Hideaki Tamai

发明人： Hideaki Tamai

IPC分类号： H04J14/00

CPC分类号： H04B1/707 ,  H04B10/27 ,  H04B10/272 ,  H04B2201/70715

摘要： An optical communications network in which one optical line terminal is connected to multiple optical network units and in which code division multiplexing communication is carried out between the optical line terminal and the optical network units. The optical intensities of upstream optical signals transmitted from each optical network unit are made constant at the time of multiplexing by an optical directional coupler, and the optical intensity of a downstream optical signal received by an optical network unit and an upstream optical signal received by the optical line terminal is contained within a dynamic range. Each optical network unit is provided with a variable optical attenuator that is common for an upstream optical signal and a downstream optical signal. The upstream optical signal and the downstream optical signal are attenuated by an equal attenuation. Moreover, the optical line terminal controls the attenuation at the variable optical attenuator.

摘要翻译： 一种光通信网络，其中一个光线路终端连接到多个光网络单元，并且其中在光线路终端和光网络单元之间执行码分复用通信。 从光网络单元发送的上行光信号的光强度在光定向耦合器复用时保持恒定，由光网络单元接收的下行光信号的光强度和 光线路终端包含在动态范围内。 每个光网络单元设置有对于上行光信号和下行光信号是公共的可变光衰减器。 上游光信号和下行光信号衰减相等的衰减。 此外，光线路终端控制可变光衰减器处的衰减。

公开(公告)号：US07929572B2

公开(公告)日：2011-04-19

申请号：US12458687

申请日：2009-07-20

申请人： Hideaki Tamai

发明人： Hideaki Tamai

IPC分类号： H04J13/00

CPC分类号： H04J13/00

摘要： N channels of encoded data are added into added data, which is compared with a first threshold of 2M−1−A and a second threshold of 2M−1−1, where M is the number of the bit positions of the binary representation of N and A is defined by 2M−(N+1). When the added data is less than the first threshold, it is selected. When the added data falls between the first and second thresholds, inclusive, either the added data or shifted data, obtained by adding A to the added data, is selected. When the added data exceeds the second threshold, the shifted data is selected. Based on output data representing the values of the respective bit positions of the binary representation of the selected data, the k-th output data, where k is a natural number less than M, is amplified into k-th amplified data having an amplitude level of 2k−1, and the M-th output data is amplified into M-th amplified data having an amplitude level of 2M−1−A. The first to M-th amplified data are multiplexed into a CDM signal.

摘要翻译： 将N个编码数据通道加到相加的数据中，该数据与2M-1-A的第一阈值和2M-1-1的第二阈值进行比较，其中M是N的二进制表示的位位数 A由2M-（N + 1）定义。 当添加的数据小于第一个阈值时，将被选中。 当添加的数据落在第一和第二阈值（包括端点）之间时，选择通过向添加的数据添加A而获得的添加数据或移位数据。 当添加的数据超过第二个阈值时，选择移位的数据。 基于表示所选数据的二进制表示的各个比特位置的值的输出数据，其中k是小于M的自然数的第k个输出数据被放大到具有振幅电平的第k个放大数据 的2k-1，并且第M个输出数据被放大为具有2M-1-A的幅度电平的第M个放大数据。 第一至第M放大数据被复用到CDM信号中。

公开(公告)号：US07746805B2

公开(公告)日：2010-06-29

申请号：US11606150

申请日：2006-11-30

申请人： Hideaki Tamai ,  Masayuki Kashima

发明人： Hideaki Tamai ,  Masayuki Kashima

IPC分类号： G01R31/08 ,  H04J13/00 ,  H04J1/00 ,  H04J3/06 ,  H04J4/00

CPC分类号： H04J14/0226 ,  H04B1/7075 ,  H04B1/7085 ,  H04J14/0246 ,  H04J14/0247 ,  H04J14/025 ,  H04J14/0252 ,  H04J14/0282

摘要： In a communication network which performs transmission from a plurality of first communication devices to a single second communication device using a synchronous code division multiplexing technique, the phases of signals transmitted from the first communication devices are synchronized easily. The first communication devices control the transmission phase of spread modulated signals using phase control information received from the second communication device. A repeater generates a code division multiplexed signal by superposing the spread modulated signals transmitted respectively from the first transmission devices. The second transmission device demultiplexes the code division multiplexed signal received from the repeater, determines the optimum phase of the demultiplexed signals, and transmits the determined optimum phase to the first transmission devices as the phase control information.

摘要翻译： 在使用同步码分复用技术从多个第一通信装置执行发送到单个第二通信装置的通信网络中，从第一通信装置发送的信号的相位容易地同步。 第一通信设备使用从第二通信设备接收的相位控制信息来控制扩展调制信号的传输相位。 中继器通过叠加分别从第一传输设备传输的扩展调制信号来产生码分复用信号。 第二发送装置对从中继器接收的码分多路复用信号进行解复用，确定解复用信号的最佳相位，并将确定的最佳相位发送给第一发送装置作为相位控制信息。