Abstract: According to one embodiment, a coupler includes a ground plane, a feed point connected to the ground plane, and an element having a unicursal-pattern. An electrical length of the element is not less than a wavelength corresponding to a central frequency of a desired frequency band, and is double the wavelength or less. The element includes a first segment disposed on a first plane, and a second segment disposed on the first plane or on a second plane which is opposed to the first plane with a gap and is parallel to the first plane, the second segment extending in parallel to the first segment. An electrical length of each of the first segment and the second segment is ½ of the wavelength or more, and is the wavelength or less.

Abstract: According to one embodiment, a coupler transmits and receives an electromagnetic wave by electromagnetic coupling between the coupler and another coupler. The coupler includes a line-shaped coupling element having a first open end and a second open end, a ground plane, a feeding element connecting the coupling element and a feed point, and a short circuiting element connecting the coupling element and the ground plane. The feeding element comprises a first end connected to an intermediate portion of the coupling element between the first open end and the second open end, and a second end connected to the feed point. The short circuiting element comprises a third end connected to the intermediate portion of the coupling element, and a fourth end connected to the ground plane.

Abstract: According to one embodiment, an information processing apparatus includes a connection member, a first casing, a second casing, and a display panel. The first casing is connected to the connection member turnably around a first axis. The second casing is connected to the connection member turnably around a second axis parallel to the first axis. The display panel is provided on the first casing and configured to display an image according to both of a first turning angle of the first casing with respect to the connection member and a second turning angle of the second casing with respect to the connection member.

Abstract: One embodiment provides an electronic device including: a connection portion; a first housing rotatably connected to the connection portion; a first display portion provided in the first housing; a first translucent portion having translucency and covering the first display portion, the first translucent portion including a first detection portion configured to detect a touch operation; a second housing rotatably connected to the connection portion; a second display portion provided in the second housing; and a second translucent portion having translucency and covering the second display portion, the second translucent portion including a second detection portion configured to detect a touch operation, wherein a front surface of the first translucent portion and a front surface of the second translucent portion are arranged substantially on the same plane when the first housing and the second housing are in an unfolded position.

Abstract: According to one embodiment, an electronic device includes a first housing, a connection portion, a second housing, and an engagement mechanism. The first housing includes a first edge and a first display screen. The connection portion is connected to the first edge to be rotatable about a first rotation axis. The second housing includes a second edge connected to the connection portion to be rotatable about a second rotation axis parallel to the first rotation axis and extending along the first edge and a second display screen capable of facing the first display screen. The engagement mechanism prevents the first housing and the second housing from being displaced in a direction crossing the first rotation axis and the second rotation axis in the state where the first display screen and the second display screen face each other.

Abstract: According to one embodiment, an electronic device includes a first housing, a connection portion, and a second housing. The first housing includes a first edge, a first display screen, a first wall located opposite the first display screen, and a first flared portion extending from the periphery of the first wall. The connection portion is connected to the first edge to be rotatable about a first rotation axis. The second housing includes a second edge connected to the connection portion to be rotatable about a second rotation axis parallel to the first rotation axis and extending along the first edge, a second display screen capable of facing the first display screen, a second wall located opposite the second display screen, and a second flared portion extending from the periphery of the second wall.

Abstract: According to one embodiment, an electronic device includes a first housing, a second housing, a connection portion, and a resistance mechanism. The first housing includes a first edge and a first display screen. The second housing includes a second edge extending along the first edge and a second display screen capable of facing the first display screen. The connection portion includes a contact portion that is in contact with a plane when one of the housings is placed on the plane and the other is raised. The connection portion is connected to the first edge to be rotatable about a first rotation axis and the second edge to be rotatable about a second rotation axis parallel to the first rotation axis. The resistance mechanism applies different resistance to the rotation of the first housing and the connection portion and to the rotation of the second housing and the connection portion.

Abstract: According to one embodiment, an electronic apparatus includes a first housing, a first display and a transparent first panel. The first display in the first housing includes a first display portion. The first panel covers the first display portion and includes a first flat surface portion and a first curved surface portion along an outer edge of the first flat surface portion. The first display portion displays images in a location corresponding to the first flat surface portion and a location corresponding to the first curved surface portion respectively at different aspect ratios from each other.

Abstract: According to one embodiment, a power supply tap includes a first wireless reception module which receives a control request which is transmitted from a remote-control terminal by a first wireless signal, a power observation module which is activated in a case where the received control request includes a power information acquisition request, and observes a total amount of power including power supplied to an electric apparatus from a power output module and power consumed by a communication control module, a first wireless transmission module which transmits the observed total amount of power to the remote-control terminal by a second wireless signal, and a switch control module which turns off a switch in a case where the control request received by the first wireless reception module includes a power-off request, thereby shutting off power supply to the electric apparatus from the power output module.

Abstract: According to one embodiment, a wireless unit includes a first wireless module, a second wireless module, and a notification module. The first wireless module is receives identification signal transmitted from the base station, and to detect whether the base station is available, the identification signal includes information associated with the base station. The second wireless module is operates with less power consumption than the first wireless module and to detect whether the identification signal arrives in predetermined period. The notification module is notify to an external module when the identification signal arrives to the second wireless module in predetermined period.

Abstract: According to one embodiment, a wireless communication apparatus includes a filter module, a generator, a first comparator and a power management module. The filter module is configured to transmit an uplink channel component among a received signal by an antenna. The generator is configured to generate an input voltage by using the uplink channel component. The first comparator is configured to output a first high signal when the input voltage is higher than a first threshold voltage, and output a first low signal when the input voltage is not higher than the first threshold voltage. The power supply management module is configured to change a power supply for transmission and reception of a wireless signal from an off state to an on state when the first high signal is continuously output for a minimum transmission time of an uplink signal or more.

Abstract: A radio apparatus having a casing and an antenna is provided. The casing has first, second and third faces. The second face and the third face correspond to a side face and another side face of the first face, respectively. The antenna is formed by a conductive line in such a way that the conductive line forms a first loop shape, a second loop shape and a third loop shape, that the first loop shape includes a first portion and a second portion positioned adjacent to a third portion of the second loop shape and a fourth portion of the third loop shape, respectively, that directions of currents distributed on the first portion and the third portion if the antenna is fed are almost same, and that directions of currents distributed on the second portion and the fourth portion if the antenna is fed are almost same.

Abstract: According to an embodiment, a communication device of the embodiment includes: a reference frequency generating unit configured to generate a reference frequency having a deviation from center frequency deviation under a predetermined condition, a radio signal detection unit configured to operate in a detection period based on the reference frequency and detect a periodic radio signal generated based on a reference frequency having higher precision than the precision of the reference frequency. The radio signal detection unit corrects the detection period by using the periodic signal.

Abstract: According to one embodiment, a communication device including: a CPU; a wireless communication module; a radio signal detection module; a power supply circuit. The wireless communication module includes; a receiving module configured to receive a radio signal containing identification information from another device; a storage module configured to pre-store at least one of the identification information; a verification module configured to verify the identification information of the received radio signal against the identification information stored in the storage module; and a notification module configured to notify the CPU when the identification information of the received radio signal corresponds with the identification information stored in the storage module. The radio signal detection module makes a notification to the power supply circuit if the radio signal detection module detects the radio signal.

Abstract: According to one embodiment, a mobile wireless terminal, which makes a wireless communication with a base station accommodated in a network, includes a receiver, a communication module, and a controller. The receiver is configured to receive and frequency-convert a wireless signal transmitted from the base station, and to detect a beacon signal transmitted from the base station based on a reception signal obtained by the frequency conversion. The communication module is configured to receive a wireless signal transmitted from the base station, to acquire identification information of the base station by decoding a reception signal obtained from the wireless signal, and to communicate with the base station. The controller is configured to activate the communication module in accordance with a reception result of the beacon signal by the receiver, and to control the communication module to acquire identification information from the base station.

Abstract: According to an embodiment, a information processing apparatus includes a wireless communication unit, a first search unit, and a connection unit. The wireless communication unit performs wireless communication with another apparatus which is utilizable as a wireless base station. The first search unit is configured to: use the wireless communication unit to sequentially transmit, in a second transmission period different from a first transmission period, plural of first identification signals having different center frequencies within a frequency band usable by the wireless communication unit, as an activation request signal for requesting activation of a wireless communication unit included in the another apparatus; repeatedly transmit, in a first repetition period, the first signals in the frequency band; and search for the another apparatus. The connection unit uses the communication unit to establish connection with the another apparatus which is searched for.

Abstract: According to one embodiment, a near field wireless communication device includes a receiver and a controller. The receiver is configured to obtain data by receiving a wireless signal. The controller is configured to stop the receiving operation of the receiver in the case where the receiver receives an unwanted signal.

Abstract: According to an embodiment, a communication terminal includes a wireless communication unit, a radio signal detection unit, and a control unit. The wireless communication unit performs a wireless communication process with other terminal that transmits a radio signals for requesting the wireless communication between terminals. The radio signal detection unit waits for the radio signals with lower operating power than operating power when the wireless communication unit waits for the radio signals. The control unit activates the wireless communication unit to cause the wireless communication unit to perform a connection process of the wireless communication when the radio signal detection unit detects the radio signal.

Abstract: According to one embodiment, a near field radio communication apparatus, as described in embodiments, comprises a signal receiving unit configured to convert a radio signal into an electric signal an information obtaining unit configured to obtain information from a signal output from the signal receiving unit and an operating power supplying unit configured to supply an operating power to the information obtaining unit if a voltage level of the electric signal output from the signal receiving unit varies to he equal to or higher than a preset threshold value.

Abstract: According to one embodiment, a threshold adjusting apparatus for a clocked comparator, the clocked comparator comparing an input signal with a threshold in accordance with a clock, the threshold adjusting apparatus comprises an output detection module configured to detect an output from the clocked comparator with the threshold while changing the threshold and a setting module configured to set the threshold when the output detection module detects a change in the output from the clocked comparator as an adjusted threshold.