Abstract: A stream encryption method encodes plaintext of N number of 1-bit input signal sequences into L (L is N or more) bits of encrypted text using N number of pseudo random sequences and uses only one pseudo random sequence used for the encryption to decode the single corresponding plaintext. This stream encryption method comprises using the N number of pseudo random sequences to divide a L-bit encryption symbol set averagely into two equal parts; selecting either of the two partial sets by a corresponding 1-bit plaintext sequence; and when there are one or more elements of the selected N number of partial sets forming common parts in the sets, using one of those as an encryption symbol.

Abstract: When an update instruction for updating task data stored in a memory is transmitted through a transaction process performed by an application server, an active node apparatus generates, based on the update instruction, an update log indicating update contents of the task data stored in the memory, and then distributes, in a multicast manner, the generated update log to other standby node apparatuses each with a memory. With this, mirroring among the plurality of memories is controlled.

Abstract: A relay unit includes: a storing unit storing a first correspondence relation between interface information of a client and a tenant identifier of the client, and a second correspondence relation among the tenant identifier, connection information about a connection with a server, and a state of connection with the server; a tenant identifying unit obtaining the tenant identifier from the first correspondence relation; a connection identifying unit creating the first connection information and adding the correspondence relation among the created first connection information, the obtained tenant identifier, and the state to a busy state into the second correspondence relation; and a connection creating unit creating a connection with the server and transmitting the obtained tenant identifier and the message to the server, wherein the connection identifying unit sets the state to an unused state in response to a reply message from the server.

Abstract: A circuit design support apparatus for supporting design of a semiconductor integrated circuit includes an upper limit path delay determining unit that sorts circuit paths included in the semiconductor integrated circuit by probability distributions for the delay values of the circuit paths, selects a worst path having a largest delay value in the circuit paths, and determines a maximum delay value as an upper limit path delay value that does not affect an operational timing of the semiconductor integrated circuit, a cell size optimization processor that replaces cells by modifying their cell sizes on the basis of the upper limit path delay value, and a critical path determining unit that determines critical paths that are capable of affecting the upper limit path delay value if the cell size optimization processor replaces cells included in the circuit paths.

Abstract: In order to realize road-road communications, a roadside device is provided with an MS function unit and a BS function unit that have a termination function of a signal. In a case of performing road-road communications, any of plural roadside devices can function as a BS, and others as an MS. In a wireless communication system that only enables wireless communications between MS and BS, road-road communication can be performed. In order to realize vehicle-vehicle communication, an in-vehicle device has the BS function unit and the MS function unit having a termination function of the signal and performs the same operations as the road-road communication. In road-vehicle communication, any of the roadside devices can function as the BS, and other roadside devices and in-vehicle devices are operated as the MS.

Abstract: A compound semiconductor device includes a carrier transit layer including GaN formed over a substrate; a carrier supply layer including GaN formed over the carrier transit layer; a source electrode and a drain electrode formed over the carrier supply layer; a first compound semiconductor layer including N in which a first opening is formed and that is located between the source electrode and the drain electrode over the carrier supply layer; a gate electrode extending from within the first opening to above the first compound semiconductor layer; and an insulator layer having a second opening that is smaller than the first opening, and insulating the gate electrode and the first compound semiconductor layer within the first opening. The gate electrode extends from within the second opening to above the first compound semiconductor layer.

Abstract: A decryption processor for calculating a plaintext through decryption of a ciphertext c includes, a first part that calculates m?p through modular exponentiation modulo a first prime number p wherein an exponent is a shifted value of d(mod(p?1)), and a base is a value of c(mod p); a second modular exponentiation part that calculates m?q through modular exponentiation modulo a second prime number q, wherein an exponent is a value of d(mod(q?1)) and a base is a value of c(mod q); a composition part that calculates ms through calculation of ((u×(m?q?m?p)(mod q))×p+m?p by using the values m?p and m?q and a private key u corresponding to p?1(mod q); and a shift release part that calculates the plaintext m through calculation of ms×(cs(mod n))(mod n) by using the value ms.

Abstract: An optical hybrid circuit includes a MMI coupler including a pair of input channels provided at positions symmetrical with respect to a center position in a widthwise direction thereof, a pair of first output channels outputting a pair of first optical signals having an in-phase relationship, and a pair of second output channels neighboring with each other outputting a pair of second optical signals having an in-phase relationship. The MMI coupler converts QPSK signal light or DQPSK signal light into the pair of first optical signals and the pair of second optical signals having an in-phase relationship. The optical hybrid circuit includes a 2:2 optical coupler connected to the first or the second output channels. The 2:2 optical coupler converts the pair of first optical signals or the pair of second optical signals into a pair of third optical signals having a quadrature phase relationship with the pair of first or second optical signals.

Abstract: An amplifying apparatus includes an amplifier that amplifies a signal, using a voltage supplied; a power source unit that generates a first voltage and a second voltage having an amplitude greater than that of the first voltage; and a switching controller that, when the an envelope signal of the signal becomes current zero, switches between and supplies to the amplifier, the first voltage and the second voltage generated by the power source unit.

Abstract: A GaN layer and an n-type AlGaN layer are formed over an insulating substrate, and thereafter, a gate electrode, a source electrode and a drain electrode are formed on them. Next, an opening reaching at least a surface of the insulating substrate is formed in the source electrode, the GaN layer and the n-type AlGaN layer. Then, a nickel (Ni) layer is formed in the opening. Thereafter, by conducting dry etching from the back side while making the nickel (Ni) layer serve as an etching stopper, a via hole reaching the nickel (Ni) layer is formed in the insulating substrate. Then, a via wiring is formed extending from an inside the via hole to the back surface of the insulating substrate.

Abstract: The distributed Raman amplifier monitors an OSNR of each channel in a WDM light which has been propagated through a transmission path to be Raman amplified, and thereafter, is amplified by an optical amplifier in an optical repeating node; judges whether a monitor value of the OSNR is larger or smaller than a previously set target value thereof; and feedback controls a driving state of a pumping light source which supplies a Raman pumping light to the transmission path, based on the judgment result. The optical communication system comprises the above distributed Raman amplifier in each repeating span thereof, and performs a pumping light control of the distributed Raman amplifier corresponding to the repeating span selected based on the OSNR in each distributed Raman amplifier and the monitor result of span loss. As a result, it becomes possible to effectively improve the OSNR of each channel in the WDM light, and also, to reduce the power consumption.

Abstract: An apparatus for collecting attribute information of an information processing apparatus to be monitored in a system for monitoring the information processing apparatus via a network includes an attribute-information obtaining unit that regularly obtains first attribute information from the information processing apparatus to be monitored, and when obtaining the first attribute-information, collectively obtains second attribute information that was obtained subsequent to the first attribute information in past times.

Abstract: An apparatus relays packets transferred over a network and discards an attack packet detected among the packets. The apparatus includes: an inspection-packet outputting unit that outputs, when detecting the attack packet, an inspection packet in which a transmission-source address contained in the attack packet is set as a destination address and a destination address contained in the attack packet is set as a transmission-source address; a filter table storing unit that stores, when acquiring a response packet for the inspection packet, a transmission-source address, a destination address, and identification information of an interface, which has received the response packet, that are contained in the response packet, in a filter table in an associated manner; and a transfer control unit that determines whether to transfer a packet as a transfer object based on the filter table.

Abstract: A signal-compensation device includes a band-limitation unit that performs band limitation on a signal based on a variably adjusted band-set value and externally transmits the signal subjected to the band limitation to an amplifier, a measurement unit that measures a signal level of each of first and second signal components of a feedback signal which is part of an output of the amplifier fed back by a feedback unit to the band-limitation unit, where the each of first and second signal components is based on at least one of a property of variability of the band-set value, a feedback of the feedback signal by the feedback unit, and a nonlinear distortion of the amplifier, and an adjustment unit that adjusts the band-set value based on the signal level of each of the first and second signal components.

Abstract: A semiconductor device includes a first MISFET having a first conduction type channel and formed on a semiconductor substrate; a second MISFET having a second conduction type channel and formed on the semiconductor substrate; a first strain film having a first sign strain that covers a region where the second MISFET is disposed; and a second strain film having a second sign strain that covers a region where the first MISFET is disposed. In the semiconductor device, an edge of the second strain film closer to the second MISFET overlaps with part of the first strain film; and the second strain film at a portion where the second strain film overlaps with the first strain film and at a portion extending from the portion, is thinner than the second strain film at a portion that covers the first MISFET.

Abstract: There is provided an optical semiconductor device having a first optical semiconductor element including an InP substrate, a lower cladding layer formed on the InP substrate, a lower optical guide layer which is formed on the lower cladding layer and is composed of AlGaInAs, an active layer which is formed on the lower optical guide layer and has a multiple quantum well structure where a well layer and a barrier layer that is formed of AlGaInAs are alternately stacked, an upper optical guide layer which is formed on the active layer and is composed of InGaAsP, and an upper cladding layer formed on the upper optical guide layer.

Abstract: In an RFID system comprising a detection unit for detecting an RFID tag and a control unit for exercising the control concerning the RFID tag, a determination unit determines whether to access a second area of an RFID tag comprising storage area, comprising of a first area for storing ID information and the second area for storing command information. An extraction unit extracts command information from the second area when it is determined to access the second area. An execution unit performs a process corresponding to the command information extracted by the extraction unit.

Abstract: A method for a computer including a processor that is capable of counting invalidation of translation lookaside buffers and generating an interrupt at the occurrence of the invalidation, the invalidation being performed by an operating system upon switching between application programs, includes acquiring identification information of application programs from the operating system and storing the identification information as a first list; detecting an interrupt generated from the processor at the occurrence of switching from a first application program to a second application program; and when the interrupt is detected, acquiring the identification information of the first and second application programs from the operating system or the mechanism and comparing the acquired identification information with the first list to determine whether either of the first and second application programs is a program that has been created or disappeared.

Abstract: An electronic device that includes a cabinet having a top face, an undersurface, and a side that completely surrounds the top face and the undersurface by connecting the outer edge of the top face and the outer edge of the undersurface together; and an electronic part disposed inside the cabinet, wherein the cabinet has an exhaust hole provided in the undersurface of the cabinet, at a position distant from the side of the cabinet; a fan disposed inside the cabinet, which blows air inside the cabinet from the exhaust hole; and at least one protrusion disposed at the back of the undersurface of the cabinet, protruding from the undersurface of the cabinet and holding the cabinet placed on a flat plate in a state of being lifted.

Abstract: A plurality of inductors are connected in series between a load resistor and a first transistor, and a plurality of second transistors provided in parallel are connected to the plurality of inductors.