Mitsubishi Electric Corporation

Mitsubishi Denki Kabushiki Kaisha

Hiroaki Hirai

Koji Sato

Akinori Fujimura

Yukimasa Nagai

Yasunori Hoshihara

Kiyotaka Kato

Toshiyuki Kuriyama

Takuya Miura

Yosikatu Tajima

Mari Otiai

Kosuke Shimmyo

Katsuhiro Kondo

A list-type detection unit () performs list-type detection on communication data so as to detect a fraudulent communication. A machine-learning-type detection unit () performs machine-learning-type detection on communication data so as to detect a fraudulent communication. A communication acceptance unit () receives communication data from a network, and allocates the received communication data to at least one of the list-type detection unit and the machine-learning-type detection unit, using an allocation filter. A filter setting unit () determines a parameter value based on a load status of the list-type detection unit and a load status of the machine-learning-type detection unit, and sets the determined parameter value in the allocation filter.

Network security apparatus, network security system, and network security method

A video delivery apparatus includes: a division unit to divide video information corresponding to one screen, which is to be delivered to each of multiple display modules constituting a display, into pieces of video information each corresponding to the number of output lines, which is N times (N is an integer of one or greater) a line indicating pixels per one line of the corresponding display module, and output the pieces of video information corresponding to the number of output lines for each of the multiple display modules; and a delivery processor to deliver the video information corresponding to one screen of the display by repetitively delivering, to the multiple display modules, delivery data obtained by multiplexing the pieces of video information corresponding to the number of output lines of the respective multiple display modules, output from the division unit, and control information indicating the target display modules to which the pieces of video information corresponding to the number of output lines are to be delivered respectively. Thus, it is possible to reduce the size of a memory held by a display controller.

Video delivery apparatus, display controller, and video delivery system

A data distribution server and terminals measure a communication status with other devices. Based on measurement results of the communication status, the data distribution server categorizes the terminals as 'trunk' or 'branch', notifies the terminals of categorization results, notifies the terminals of selection of a relay path through which data can be distributed to all relay terminals by relaying the data between &#x201c;trunks&#x201d;, and instructs a &#x201c;trunk&#x201d; terminal to relay the data through the relay path. When notified that the terminal itself is a &#x201c;trunk&#x201d;, each of the terminals relays the data based on an instruction from the data distribution server. When notified by the data distribution server that the terminal itself is a &#x201c;branch&#x201d;, each of the terminals receives the data distributed from the data distribution server or the &#x201c;trunk&#x201d;.

Data distribution system, distribution device, terminal device, and data distribution method providing enhanced communication efficiency

A content delivery system which comprises a delivery server and multiple terminal devices, the delivery server delivering content, the multiple terminal devices receiving delivery of the content, in the content delivery system connection between the delivery server and the terminal devices and connection between the terminal devices being made by radio, in the content delivery system the terminal devices being connected in multiple stages, wherein the delivery server instructs a terminal device which has received delivery of the content and which is connected to an other terminal device at the next stage to deliver content possessed by a self terminal device to the other terminal device, and wherein the instructed terminal device delivers content possessed by the self terminal device to the other terminal device and notifies the delivery result to the delivery server.

Delivery server, and terminal device

A wireless communication system including a master station, and slave stations that execute a predetermined operation based on an operation instruction transmitted by the master station, in which the master station includes a normal frame processor that generates an operation instruction, and a Go/Stop signal processor that generates an execution instruction signal instructing to execute the operation instruction to transmit the signal when a response to the operation instruction is obtained from all the slave stations during a predetermined response waiting time, each of the slave stations include an execution-instruction-signal receiving unit that receives the execution instruction signal, and the execution-instruction-signal receiving unit executes an operation corresponding to the execution instruction signal when receiving the execution instruction signal or waits execution of the corresponding operation until the execution instruction signal corresponding to the operation instruction is received.

Wireless communication system, wireless communication device, and wireless communication method

A transmission device includes an RQAM modulating unit that has an S/P that divides a transmitting signal indicating information to be transmitted into a first signal and a second signal, a mapping unit that maps the first signal into a first in-phase component and a second in-phase component and the second signal into a first orthogonal component and a second orthogonal component by a predetermined mapping system, a P/S that generates a first modulated signal including the first in-phase component and the first orthogonal component and a second modulated signal including the second in-phase component and the second orthogonal component, an IFFT that transmits the first modulated signal and the second modulated signal, a DAC, an LPF, a Mixer, a BPF, and a LOCAL OSCILLATOR.

Transmission device and modulation method

A reception processing unit measures reception states of input reception signals of each of a plurality of channels, generates local channel reception information, and applies a reception processing to the input reception signals to generate decoded signals. A media-access-control unit generates transmission frames for each of the channels using transmission data. A transmission processing unit generates radio signals including each of the transmission frames. A channel-information processing unit generates local feedback information, and inserts the local feedback information generated into at least one of the radio signals that are transmitted by the radio communication apparatus.

Growing community of inventors

Tokyo, Japan

Hiroaki Hirai