Nippon Telegraph and Telephone Corporation

Mitsubishi Electric Corporation

Manabu Yoshino

Kazuhiro Shimizu

Tomoya Hatano

Yuji Kawasaki

Noriki Miki

Takumi Harada

Toshihiro Imasaka

Junichi Yamashita

Takashi Yamada

Kenichi Suzuki

Hajime Akiyama

Junichi Kani

Hiroo Suzuki

Tomohiro Taniguchi

Shin Kaneko

Hirotaka Ujikawa

Jun-ichi Kani

Keita Nishimoto

Yusuke Kawase

Masashi Tadokoro

Noriyuki Oota

Takuichiro Shitomi

Akiyuki Takeda

Toshikiyo Tanaka

Takeaki Mochida

Jun-Ichi Kani

An aspect of the present invention provides an input/output switch including: a plurality of virtual switches formed by asymmetrically divided switches with symmetrically aligned ports; and ports on a side of end points and ports on a side of an intermediate switch allocated for each of the virtual switches, in which some of the ports of the virtual switches on the side of the end points act as ports that form a path that returns traffic among the virtual switches.

Input/output switch and communication system

An optical communication device include: an optical switch configured to output an optical signal input from one transmission line to another transmission line among the plurality of transmission lines; a wavelength management control unit configured to allocate a wavelength, a time, a polarized wave, a mode, a code, a frequency, a core, a core wire, a wavelength that is a combination thereof, or the like to a subscriber device by using a control signal in accordance with the subscriber device and a transfer destination on a path to a communication destination, and transmits the control signal to the subscriber device by using a carrier different from a carrier to which the wavelength or the like is allocated; and an optical switch control unit configured to control the optical switch such that the input optical signal is output to the another transmission line corresponding to the communication destination.

Optical communication apparatus, optical communication system and optical communication method

An optical communication device includes: an optical switch configured to output an optical signal input from one transmission line to another transmission line among a plurality of transmission lines; and a control unit configured to control the optical switch such that a wavelength in accordance with a subscriber device and a transmission destination on a path of a communication destination is allocated to the subscriber device by using a control signal inserted or written by the control unit or a monitoring unit, and the input optical signal is output to the another transmission line corresponding to the communication destination. The subscriber device divides a main signal of the input optical signal into at least first and second partial main signals, inserts the control signal between the first and second partial main signals, inserts a time region for inserting the control signal in the control unit or the monitoring unit in a middle of a path, or inserts a writable signal region for overwriting using the control signal for transmission, deletes the control signal, the time region for inserting the control signal, or the writable signal region for overwriting using the control signal from a received signal, and combines the divided main signals to output the main signal.

An optical communication device includes an optical switch that outputs an optical signal input from one of a plurality of transmission lines to another transmission line among the plurality of transmission lines, a monitoring unit that relays an optical signal in a transmission line on a side where the optical signal is output from the optical switch, a blocking unit that blocks transmission of an optical signal output from the monitoring unit, a wavelength controller that allocates a wavelength and the like that are a wavelength, a time, a polarization, a mode, a code, a frequency, a core, a core wire, or a combination thereof to an optical signal of a subscriber device via the monitoring unit, and an optical switch controller that controls the optical switch such that the optical signal input from the transmission line to the optical switch is output to the another transmission line, and cancels the blocking by the blocking unit.

A service start method is a service start method executed by a communication system, and the service start method includes: a step of acquiring identification information or authentication information of a device, a customer, or a service; a step of making authentication of the device, the customer, or the service to succeed when the identification information or the authentication information has been acquired together with information that is associated with the customer or a customer's location in advance, or when the identification information or the authentication information has been acquired from a terminal or a line that is associated with the customer in advance; and a step of starting provision of the service for the device for which the authentication has succeeded.

Service start method and communication system

A communication device in a communication system in which functions that are converted to software are configured as a plurality of components, and the functions are realized as a result of the components being respectively executed by a plurality of communication devices that are connected to a network, the communication device including a sorting unit configured to acquire a signal that is transmitted by a first component and transmit the signal to a second component indicated by destination information that is added to the signal by the first component.

Communication apparatus and communication method

A communication device in a communication system in which functions that are converted to software are configured as a plurality of components, and the functions are realized as a result of the components being respectively executed by a plurality of communication devices that are connected to a network, the communication device including a platform for each component that realizes a function corresponding to a plurality of the networks, wherein the platform includes a common processing unit configured to execute processing that is not dependent on the network and a dependent processing unit for each network, the dependent processing unit being configured to execute processing that is dependent on the network.

A communication device in a communication system in which functions that are converted to software are configured as a plurality of components, and the functions are realized as a result of the components being respectively executed by a plurality of communication devices that are connected to a network, the communication device including a capsulation function unit configured to encapsulate information that is to be transmitted to another communication device.

One aspect of the present invention is a communication device including: a first control unit that converts, when data including partial data obtained by fragmenting a user frame and a user frame is received via a passive optical network, the partial data into data that is not discarded in a transmission line through which the user frame is transmitted, and transmits the data through the transmission line through which the user frame is transmitted; and a second control unit that receives the data via the transmission line through which the user frame is transmitted from the first control unit, converts the received data into a user frame that is transmittable through the passive optical network, and transmits the user frame via the passive optical network.

A communication device includes: a first transmission-reception unit connected with a first optical line terminal; a second transmission-reception unit connected with a second optical line terminal; and a control unit, the first transmission-reception unit acquires a control signal having a destination at the second or third optical line terminal from the first optical line terminal, the control unit forwards the control signal toward the second transmission-reception unit connected with the second or third optical line terminal, and the second transmission-reception unit forwards the control signal to the second or third optical line terminal.

Communication apparatus, and communication method

Provided is a semiconductor device including: an N-type diffusion layer being a second region, formed in a surface portion of a P-type diffusion layer being a first region, to function as a RESURF region; an N-type buried diffusion layer being a third region formed in a bottom portion of the second region, close to a high-side circuit; and a MOSFET using the second region as a drift layer. The MOSFET includes a thermal oxide film formed between an N-type diffusion layer being a fourth region serving as a drain region and an N-type diffusion layer being a sixth region serving as a source region, and an N-type diffusion layer being a seventh region formed below the thermal oxide film. The seventh region has an end portion close to a low-side circuit, being closer to the low-side circuit than an end portion of the third region close to the low-side circuit.

Semiconductor device comprising a MOSFET having a RESURF region and higher peak impurity concentration diffusion region in the RESURF region

There is provided a setting device including a setting unit configured to, based on setting content input/output to/from some interfaces among a plurality of interfaces, when the setting content includes setting content related to other interfaces, perform setting for the other interfaces.

Setting apparatus and setting method

A communication apparatus includes: a memory that stores, first data on firmware before update, second data on firmware after the update, and a table in which the first data or the second data is associated with an address where the first data or the second data is positioned; and a processor that executes processing based on the first data or the second data positioned at the address defined in the table.

Communication device and information processing method

A high withstand voltage isolation region has a first diffusion layer of a second conductivity type formed on a principal surface of a semiconductor substrate. The high withstand voltage MOS has a second diffusion layer of the second conductivity type formed on the principal surface of the semiconductor substrate. A low side circuit region has a third diffusion layer of a first conductivity type formed on the principal surface of the semiconductor substrate. A fourth diffusion layer of the first conductivity type having a higher impurity concentration than the semiconductor substrate is formed on the principal surface of the semiconductor substrate exposed between the first diffusion layer and the second diffusion layer. The fourth diffusion layer extends from the high side circuit region to the low side circuit region and does not contact the third diffusion layer.

Semiconductor device comprising resurf isolation structure surrounding an outer periphery of a high side circuit region and isolating the high side circuit region from a low side circuit region

A communication apparatus includes a packet reception unit; a packet transmission unit; and a processing sequence control unit that controls a processing sequence, and the processing sequence control unit includes a packet holding unit; function instances for respective function files including groups of procedures and groups of variables; an instance information management unit that holds instance information including function instance identifiers identifying the function instances, procedure identifiers identifying the procedures belonging to the function instances, and memory addresses of the procedures; an execution sequence information management unit that holds execution sequence information that associates the function instance identifiers, the procedure identifiers, return values of the procedures, and procedures belonging to function instances that are to be executed next; and a function execution unit that, on the basis of the execution sequence information and the instance information, calls a procedure, executes a process on the communication packet, and executes the next process depending on a return value.

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Tokyo, Japan

Manabu Yoshino