Mitsubishi Electric Corporation

Mitsubishi Electric Corpotation

Hisao Nakano

Yasunori Hoshihara

Masahiro Nakatsukasa

Masahiro Abukawa

Takeshi Mitsui

Yoshihiro Nakai

Yasuaki Takimoto

Takuya Kono

Makoto Takeda

Akihiro Sanada

Provided is a data transfer device capable of avoiding reduction in a data communication speed of a sensor in an area with a low wireless communication line speed while suppressing occurrence of overflow. The data transfer device includes: a data acquisition unit that acquires sensor data detected by a sensor at a first data communication speed; a communication unit that transmits the acquired sensor data to an external server at a second data communication speed; an accumulation amount calculating unit that calculates a temporal transition of a predicted accumulation amount of the acquired sensor data in a memory using the first data communication speed and the second data communication speed; and a determination unit that determines whether or not the sensor data to be accumulated in the memory will overflow on the basis of the temporal transition of the predicted accumulation amount.

Data transfer device and data transfer method

A remote operation device that remotely operates a mobile object by communication includes processing circuitry configured to acquire information on non-prime remote operation devices that are allowed to remotely operate the mobile object by the communication; detect a communication delay time in the communication with the mobile object; determine whether or not the detected communication delay time exceeds a delay time determination threshold; determine, when it is determined that the communication delay time exceeds the delay time determination threshold, a switching destination remote operation device from among the non-prime remote operation devices depending on whether or not a switching determination condition is satisfied on a basis of the acquired information on the non-prime remote operation devices; and output switching instruction information for remotely operating the mobile object to the determined switching destination remote operation device.

Remote operation device and remote operation method

A control unit () controls a filter () of a communication device () by wired communication via a LCX () to pass or cut off a signal in a wireless frequency band, to cause the LCX () and LCX () to function as a single antenna or a plurality of antennas.

Information communication device, information communication system, and information communication method

The wireless communication device includes: a wireless communication unit issuing a request to increase or decrease transmission power to another device in such a way that a received signal strength of a radio wave transmitted from another device falls within a predetermined range, and performing a transmission power control of a wireless communication device in response to a request to increase or decrease transmission power from another device. Further, the wireless communication device includes: a control unit performing a control of decreasing the received signal strength of each of the wireless communication device and another device, when a communication state satisfies a condition for increasing the transmission power, to cause the wireless communication unit of the wireless communication device to issue the request to increase the transmission power to another device, and also cause another device to issue the request to increase the transmission power to the wireless communication device.

Wireless communication device

When a wireless communication device is performing wireless communications of real time data by using a wireless LAN method, and the degree of influence of paging a communications partner in an automatic connection operation for a Bluetooth method upon the wireless communications using the wireless LAN method is higher than a permissible upper limit, the wireless communication device changes the paging operation in such a that the degree of influence is reduced.

A wireless communication devicecarries out wireless communications using different wireless communication schemes through antennas independent of each other. When it decides that a party on the other end is a wireless communication device using a single antenna system, it switches to a simultaneous operation that carries out wireless LAN and Bluetooth wireless communication in parallel, and when it does not decide that the party on the other end is a wireless communication device using a single antenna system, it switches to a time-division operation that carries out the wireless LAN and Bluetooth wireless communication in time division.

Wireless communication device and wireless communication control method

An electronic key system includes a lock-side terminal that is mounted in a locked object and capable of at least locking and unlocking the locked object, and a portable terminal capable of sending and receiving the electronic key to and from the lock-side terminal mounted in the locked object and the other portable terminals, and when receiving a request from the one portable terminal, the lock-side terminal generates the electronic key at random, and sends the randomly generated electronic key to the one portable terminal.

Electronic key system, and lock-side terminal and portable terminal employed in same

A wireless communication system includes APsandthat perform communications using different frequency channels, and slave unitstothat connect with either one of the APsandto perform wireless communications. When detecting a radar wave which is a wireless signal of another wireless system, and stopping the communications which have been performed till then via a frequency channel, the APcommands the slave unitstothat have been performing wireless communications by using this frequency channel to switch their connection destinations to the APthat performs communications using a different frequency channel, and the slave unitstoswitch their connection destinations to the APaccording to the command from the AP

Wireless communication system and wireless communication device

A wireless communication device includes first wireless communication unitfor performing wireless communication with information terminalthrough wireless LAN, and for obtaining frequency channel of interference wave by detecting interference wave due to wireless communication through wireless LAN between information terminaland portable information terminal; second wireless communication unit, third wireless communication unit, . . . , nth wireless communication unitfor performing wireless communication with mobile terminalor wireless headphoneby Bluetooth or wireless audio; channel aggregation unitfor setting the frequency channel of first wireless communication unitat the same frequency channel as the frequency channel of interference wave the first wireless communication unitobtains; and assignment control unitfor allocating frequency channels of the second, third, . . . , nth wireless communication unitsat frequency channels other than frequency channel the channel aggregation unitsets.

Wireless communication device and wireless communication system

A wireless communication apparatus includes: attenuators provided in wireless devices for attenuating an input level of a reception signal; a monitoring unit for monitoring communication states of the wireless devices; and a control unit that performs control to determine whether or not the input level of the reception signal of the wireless device to be controlled out of the wireless devices will be excessive because of a wireless communication to be performed by the second wireless device other than the wireless device to be controlled, based on the communication states of the wireless devices monitored by the monitoring unit and to attenuate the input level of the reception signal by operating the attenuator of the wireless device when determination is made that the input level of the reception signal will be excessive.

Wireless communication apparatus

A wireless communication device comprises: a detector configured to detect an interference wave and a frequency of the interference wave, the interference wave causing radio interference in the wireless communication; an interference avoidance controller configured to predict duration where the wireless communication is affected by radio interference due to the interference wave, and configured to issue a command for avoiding the radio interference due to the interference wave when the predicted duration exceeds a threshold time period; and a frequency controller configured to control frequencies used in the wireless communication to exclude the frequency of the interference wave in accordance with the command for avoiding the radio interference issued by the interference avoidance controller.

In UWB communication based on an MB-OFDM communication scheme, when a jamming interference is detected within a receiving frequency band, the frequency of a local signal LO is altered to a frequency that will cause the jamming to be converted to a frequency outside the pass band of an LPF.

Growing community of inventors

Tokyo, Japan

Hisao Nakano