Kabushiki Kaisha Toshiba

Toshiba Electronic Devices & Storage Corporation

Seiichiro Horikawa

Koji Akita

Tomoko Adachi

Ryoko Matsuo

Hideo Kasami

Koichiro Ban

Takayoshi Ito

Norikazu Kohara

According to one embodiment, when a control unit is notified of information in at least one second signal received by one of first and second wireless communication units after the control unit provides the second wireless communication unit with a command to transmit a first signal containing first address information and before a waiting time elapses and when the at least one second signal contains second address information assigned to an authentication apparatus having received the first signal, then the control unit provides the first wireless communication unit with a command to transmit a third signal for a connection request with the second address information set in a destination address.

Wireless communication apparatus, authentication apparatus, wireless communication method and authentication method

A wireless communication system includes a control station and a plurality of second wireless communication apparatuses. The control station includes a management table that holds sending permission information indicating whether or not to transmit a packet for requesting to send an orientation estimation auxiliary signal. The plurality of second wireless communication apparatuses each refer to the management table, transmit the packet to a first wireless communication apparatus in response to the sending permission information, and perform orientation estimation using the orientation estimation auxiliary signal transmitted from the first wireless communication apparatus.

In-facility wireless communication system and method for determining locations based on tag orientation

A card devices includes an authentication unit, a wireless communication unit, and a control unit. The authentication unit performs and authentication process with an external device via wired communication. The wireless communication unit performs wireless communication with the external device. The control unit controls the wireless communication unit to reduce radio waves radiated from the wireless communication unit when the control unit detects that the authentication process is being performed.

Card device

A wireless communication device has a first wireless unit, a second wireless unit, a storage, a communication judging unit, a threshold value retaining unit configured to retain a threshold value used to judge whether or not to permit a switch from the first wireless unit to the second wireless unit, a remaining volume monitoring unit configured to judge, when the communication judging unit judges that the first wireless unit has disconnected communication, whether volume of remaining unreceived data to be incorporated into the data received by the first wireless unit before the disconnection of communication is smaller than the threshold value retained by the threshold value retaining unit, and a controller configured to start receiving the unreceived data by switching from the first wireless unit to the second wireless unit, when the volume of remaining unreceived data is judged to be small by the remaining volume monitoring unit.

Wireless communication device and wireless communication method

A wireless communication device has a plurality of wireless units each configured to cover a different wireless communication range and be capable of receiving data in the corresponding wireless communication range, a status information generator provided corresponding to the wireless unit utilized to receive data among the plurality of wireless units, in order to generate status information concerning the wireless communication range of the wireless unit utilized to receive the data, and a storage configured to store the status information in association with the data.

In an embodiment, an electronic apparatus is mounted with a card unit including first and second devices driven with different driving voltages. The electronic apparatus includes: first and second voltage generating units, first and second control units. The first voltage generating unit generates a first driving voltage for driving the first device and a second driving voltage for driving the second device using electric power from the battery. The second voltage generating unit generates the first driving voltage and second driving voltage using electric power transmitted from the external device. The first control unit controls the first selection unit such that any one of the first driving voltage generated by the first voltage generating unit and the first driving voltage generated by the second voltage generating unit is selected depending on the electric power supply capability of the battery.

Electronic apparatus

According to one embodiment, a card device includes an authentication unit, a wireless communication unit, and a control unit. The authentication unit performs an authentication process with an external device via wired communication. The wireless communication unit performs wireless communication with the external device. The control unit controls the wireless communication unit to reduce radio waves radiated from the wireless communication unit when the control unit detects that the authentication process is being performed.

There is provided a signal receiving apparatus including first to pth stage computers configured to apply, in a step-by-step manner, butterfly operations to 2input values; and 2registers configured to store values obtained by a p&#x2212;1th stage computer wherein the pth stage computer includes (a) 2butterfly operation circuits configured to transmit, from corresponding 2output ports, values obtained by the butterfly operations based on values provided to 2input ports and (b) 2selecting circuits arranged corresponding to the butterfly operation circuits, each selecting circuit providing a value of a register corresponding to different one of 2BFInOrder_i(j,t) (wherein, BFInOrder_i(j,t) denotes values obtained by converting BFOutOrder_i(j,t)=t+j*2+i*2or (2&#x2212;1&#x2212;t)+j*2+i*2) expressed by base H to base 2of (log2)&#x2212;1 words, word-reversing the values converted to base 2, and converting the word-reversed values to the base H).

Growing community of inventors

Yokohama, Japan

Seiichiro Horikawa