Patent application number | Description | Published |
20090305734 | RADIO COMMUNICATION APPARATUS, METHOD AND PROGRAM - An apparatus includes a unit receiving a first-radio signal indicating a state in which transmission by a SDMA scheme is allowed, a unit determining whether a transmission state is a first state (the SDMA scheme is available), or a second state (the SDMA scheme is unavailable), a unit transmitting a radio signal using the SDMA scheme, when it is determined that the first state continues for the first-time period, and a unit setting a third-time period, when the first state fails to continue for the first-time period, the third-time period being obtained by subtracting, from the first-time period, a second-time period ranging from when carrier sense is started to when the transmission state is determined to be the second state, wherein when the first-radio signal is received after the third-time period is set, it is determined whether the first state continues for the third-time period. | 12-10-2009 |
20090323608 | APPARATUS AND METHOD FOR WIRELESS COMMUNICATION - A wireless communication apparatus which can simultaneously conduct communication on at least two frequency channels is described. The apparatus includes a communication unit which refers to a connection management table to determine a communication system which can be used by a wireless communication terminal using an identifier of the wireless communication terminal, and conducts communication with the wireless communication terminal on a second frequency channel using the communication system, when a request from the wireless communication terminal to change the first frequency channel to the second frequency channel is permitted. | 12-31-2009 |
20100056069 | WIRELESS COMMUNICATION APPARATUS - A wireless communication apparatus receives a radio signal, compensates a frequency offset of received radio signal, stores, in a memory, a frequency offset of the received radio signal which includes an address used as a destination of a transmission signal, compensates a frequency of the transmission signal having the address as the destination by using the frequency offset stored in the memory, and transmits the transmission signal whose frequency is compensated. | 03-04-2010 |
20100112944 | RADIO COMMUNICATION APPARATUS AND RADIO COMMUNICATION METHOD - A radio communication apparatus includes: a first communication unit having a first communication coverage including a short-distance portion and a long-distance portion; a second communication unit having a second communication coverage including at least the long-distance portion; a reception detecting unit detecting that a short-distance communication request transmitted from a first communication unit of an other communication apparatus has been received by at least one of the first and second communication units; a determining unit permitting the request when the request is received by the first communication unit and not received by the second communication unit, and rejecting the request when the request is received by the second communication unit; and a communication processing unit carrying out short-distance communication with the other communication apparatus via the first communication unit when the request is permitted. | 05-06-2010 |
20100124213 | WIRELESS TERMINAL DEVICE, COMMUNICATION METHOD, AND COMPUTER-READABLE RECORDING MEDIUM - A wireless terminal device performs first, second, and third scans in sequence to detect wireless access points; stores base station information on the detected wireless access points in a storing unit; sets a disappearance flag in base station information that correspond to a wireless access point that was detected in the first scan and not in the second scan; sets a reappearance flag in base station information that correspond to a wireless access point that was not detected in the second scan and was detected in the third scan; identifies a wireless base station corresponding to base station information in which the disappearance flag and the reappearance flag are set; and displays information on the wireless base station identified on a display unit. | 05-20-2010 |
20100180061 | INTERFACE CONTROL DEVICE - An interface control device includes a first interface, a second interface, a third interface and an interface controller. The first interface is used to communicate with a first information processing device. The second interface is used to communicate with a second information processing device. The second information processing device is different from the first information processing device. The third interface is used to communicate with a controller of a data-storage medium. The interface controller performs an interface control including transmission of an indication signal through the first interface after the communications through the second interface with the second information processing device are established. The indication signal indicates the first information processing device of the fact that communications through the second interface have been established. | 07-15-2010 |
20100218026 | INTERFACE CONTROL DEVICE - An interface control device includes a first interface, a second interface, a third interface, an interface controller and a clock supplying unit. The first interface is used to communicate with a first information processing device and obtain a first clock signal from the first information processing device. The second interface is used to communicate using a second clock signal with a second information processing device different from the first information processing device. The third interface is used to communicate with a controller of a data-storage medium. The interface controller performs an interface control for the first, second and third interfaces. Moreover, the clock supplying unit supplies the first clock signal to the third interface while communications through the second interface have not been established. | 08-26-2010 |
20110038262 | WIRELESS COMMUNICATION SYSTEM, WIRELESS COMMUNICATION METHOD, WIRELESS COMMUNICATION APPARATUS AND PROGRAM STORAGE MEDIUM - A wireless communication system includes a first wireless communication apparatus and a second wireless communication apparatus which communicate with each other. The first wireless communication apparatus simultaneously transmits frames to the second wireless communication apparatus through first to nth (n is an integer of 2 or greater) frequency channels, the second wireless communication apparatus receives the frames from the first wireless communication apparatus through the first to nth frequency channels, judges success or failure of reception of each of the frames by performing error detection, creates delivery confirmation frame including information indicating success or failure of reception of each of the frames, and transmits the delivery confirmation frame through x specific channel (x is an integer in a range from 1 or more to n−1 or fewer) of the first to nth frequency channels to the first wireless communication apparatus a predetermined time after reception of the frames. | 02-17-2011 |
20110044302 | RADIO COMMUNICATION APPARATUS, COMPUTER READABLE STORAGE MEDIUM, AND RADIO COMMUNICATION SYSTEM - In a radio communication system that simultaneously uses plural radio channels (STA | 02-24-2011 |
20110122853 | RADIO COMMUNICATION DEVICE, CONTROL METHOD FOR RADIO COMMUNICATION DEVICE AND PROGRAM STORAGE MEDIUM - A radio communication device C | 05-26-2011 |
20110219428 | ELECTRONIC APPARATUS AND TERMINAL - According to one embodiment, an electronic device connected to an authentication device through a first communication network, and further connected to another electronic device through a second communication network, wherein the electronic device executes authentication of the electronic device and another electronic device by data delivery/receipt conforming to a predetermined procedure between the electronic device and the authentication device through the first communication network, and data delivery/receipt between the electronic device and another electronic device through the second communication network. | 09-08-2011 |
20110243022 | WIRELESS COMMUNICATION APPARATUS - According to one embodiment, a wireless communication apparatus includes a reception unit configured to obtain a reception signal by receiving a first packet having, as a unit, a slot including at least two repetitive symbol sequences used to transmit an identical symbol by switching antenna beams having different directions, a carrier sensing unit configured to sense a carrier for each symbol period from the reception signal, a measurement unit configured to measure a slot length from the reception signal, a generation unit configured to generate a second packet having the slot as a unit, a timer which decrements a time period until transmission of the second packet for each slot length, a control unit configured to stop, if a carrier is sensed within a time period of the slot length, the timer for the time period, a transmission unit configured to transmit the second packet according to the timer. | 10-06-2011 |
20120088460 | COMMUNICATION DEVICE - According to one embodiment, a communication device includes a receiver, a transmitter and an interruption module. The receiver receives an allocation signal indicating a first period usable by the communication device and a second period usable by a plurality of communication devices including the communication device. The transmitter transmits a transmission signal in the first period. If the transmission of the transmission signal is completed within the first period, the interruption module interrupts at least a part of power supply to the receiver in the second period. If the transmission of the transmission signal is not completed within the first period and directivity of radio waves used by a second communication device includes a direction of the communication device in a communication period allocated before the second period, the transmitter transmits the transmission signal in the second period. | 04-12-2012 |
20120110405 | COMMUNICATION DEVICE - According to one exemplary embodiment, a communication device includes: a receiver which receives a frame including data, a first error detection code for detecting an error of the data, a sequence number of the data, and a second error detection code for detecting an error of the sequence number; a first detector which detects the error of the data using the first error detection code; a second detector which detects the error of the sequence number using the second error detection code; a generator which generates an acknowledgement frame having maximum sequence number information regarding a maximum sequence number in a frame for which the error of the sequence number is not detected, and acknowledgement information representing whether there is an error for data in each frame of which the sequence number being equal to or less than the maximum sequence number; and a transmitter which transmits the acknowledgement frame. | 05-03-2012 |
20120112555 | WIRELESS POWER TRANSMISSION SYSTEM - A power feeding device includes an oscillator to generate a high frequency signal, a resonance frequency determining unit configured to determine a resonance frequency to be used for a wireless power transmission, a resonance frequency controller configured to generate a resonance parameter, a resonant circuit to generate electromagnetic inductance, and a communicating unit configured to notify a resonance frequency to the power receiving device before starting a wireless power transmission. A power receiving device includes a communicating unit configured to receive information of a resonance frequency to be used for a wireless power transmission, a resonance frequency controller configured to generate a resonance parameter, a resonant circuit to generate power, a load circuit to operate by the power, a switch to open and close a connection between the resonant circuit and the load circuit, and a determining unit configured to control the switch. | 05-10-2012 |
20120166577 | COMMUNICATION DEVICE, HOST DEVICE, COMMUNICATION CONTROL METHOD, AND COMPUTER PROGRAM PRODUCT - According to an embodiment, a communication device connected to a host device includes a wireless communication unit; and a communication control unit configured to control the wireless communication unit to transmit a file, which is stored in a storage unit of the communication device by the host device, to a transmission destination corresponding to a type of the host device and a type of the communication device using wireless communication. | 06-28-2012 |
20120200397 | COMMUNICATION DEVICE - A communication device includes a first receiver, a second receiver, a communication module, and a controller. The first receiver receives an operation signal from a remote controller. The second receiver receives a radio signal with a specific frequency. A power consumption of the second receiver is less than that of the first receiver. The communication module is capable of transmitting the operation signal to a first communication device. The controller controls power supply to the first receiver and the communication module and starts power supply to the first receiver and the communication module if the second receiver receives the radio signal. The communication module turns to a standby state if the first receiver does not receive the operation signal after start of power supply to the first receiver. | 08-09-2012 |
20120258666 | WIRELESS COMMUNICATION APPARATUS AND METHOD - According to one embodiment, a wireless communication apparatus includes a determination unit, a first setting unit, a second setting unit and a wireless unit. The determination unit determines whether a signal degradation degree is higher than a threshold value. The first setting unit sets first parameters relating to a first data rate and a first communication robustness. The second setting unit sets second parameters relating to a second data rate and a second communication robustness if an instruction signal is received and if the signal degradation degree is higher than the threshold value. The wireless unit communicates with a communication partner using one of the first parameters and the second parameters. | 10-11-2012 |
20120315962 | COMMUNICATION DEVICE - A communication device includes a receiver, a transmitter and an interruption module. The receiver receives an allocation signal indicating a first period usable by the communication device and a second period usable by a plurality of communication devices including the communication device. The transmitter transmits a transmission signal in the first period. If the transmission of the transmission signal is completed within the first period, the interruption module interrupts at least a part of power supply to the receiver in the second period. If the transmission of the transmission signal is not completed within the first period and directivity of radio waves used by a second communication device includes a direction of the communication device in a communication period allocated before the second period, the transmitter transmits the transmission signal in the second period. | 12-13-2012 |
20130003661 | RADIO SYSTEM, RADIO BASE STATION AND RADIO TERMINAL - One of a plurality of radio terminals that transmit radio signals to a radio base station under a space multiplexing scheme, including a receiving unit | 01-03-2013 |
20130083762 | APPARATUS AND METHOD FOR WIRELESS COMMUNICATION - A wireless communication apparatus which can simultaneously conduct communication on at least two frequency channels is described. The apparatus includes a communication unit which refers to a connection management table to determine a communication system which can be used by a wireless communication terminal using an identifier of the wireless communication terminal, and conducts communication with the wireless communication terminal on a second frequency channel using the communication system, when a request from the wireless communication terminal to change the first frequency channel to the second frequency channel is permitted. | 04-04-2013 |
20130176286 | DATA SEND DEVICE - According to one embodiment, a data send device includes a display unit configured to display reproduced data. It further includes a VIDEO control unit configured to reproduce and display data on the display unit, and to control data send to a data reception device as a data send destination. It further includes a wireless control unit configured to control wireless communication with the data reception device. When the wireless control unit makes wireless connection with the data reception device while reproducing data, the VIDEO control unit sends the data to the data reception device via the wireless control unit. | 07-11-2013 |
20130178152 | DATA SEND DEVICE AND DATA RECEPTION DEVICE - According to one embodiment, a data send device and a data reception device includes a data send device includes a display unit configured to display a communication state with a data reception device. It further includes a VIDEO control unit configured to control data send to the data reception device. It further includes a wireless control unit configured to display an indication that it is searching the data reception device before making wireless connection with the data reception device, and to display a different indication of connection completion from the indication of the searching state when making wireless connection with the data reception device. | 07-11-2013 |
20130179508 | DATA SEND/RECEPTION DEVICE - According to one embodiment, a data send/reception device includes a storage unit configured to store a profile. It further includes a PROFILE control unit configured to control send of a profile to other data send/reception device and reception of a profile from the other data send/reception device by mutually sending and receiving the profiles to exchange the profiles. It further includes a wireless control unit configured to control wireless communication with the other data send/reception device. | 07-11-2013 |
20130294373 | RADIO SYSTEM, RADIO BASE STATION AND RADIO TERMINAL - One of a plurality of radio terminals that transmit radio signals to a radio base station under a space multiplexing scheme, including a receiving unit that receives an access right request signal with respect to the radio base station from an other radio terminal, a prevention unit that prevents transmission of radio signals when receiving radio signals directed to an other radio terminal, a cancellation unit that cancels the prevention of transmission when receiving an access right assignment signal during the prevention of transmission and a transmitting unit that transmits a data signal to the radio base station according to the assignment signal, wherein radio signals are transmitted to the radio base station simultaneously with the other radio terminals and under the space multiplexing scheme. | 11-07-2013 |
20130324038 | POWER TRANSMITTER, POWER RECEIVER AND POWER TRANSMISSION AND RECEPTION SYSTEM - According to one embodiment, a power transmission and reception system includes a power transmitter and a power receiver. The power transmitter includes a power transmission module configured to wireless-transmit power to the power receiver; and a first wireless communication module configured to perform wireless communication of data frame having data with the power receiver. The power receiver includes a power reception module configured to receive the power transmitted from the power transmission module; and a second wireless communication module configured to perform wireless communication of the data frame with the first wireless communication module using the received power. The second wireless communication module is configured to perform wireless communication while the power reception module is not receiving the power. | 12-05-2013 |
20130324039 | POWER TRANSMITTER, POWER RECEIVER AND POWER TRANSMISSION AND RECEPTION SYSTEM - According to one embodiment, a power transmission and reception system includes a power transmitter and a power receiver. The power transmitter includes: a power transmission module configured to wireless-transmit power to the power receiver; and a first wireless communication module configured to perform wireless communication with the power receiver. The power receiver includes: a power reception module configured to receive the power transmitted from the power transmission module; and a second wireless communication module configured to perform wireless communication with the first wireless communication module using the received power. The second wireless communication module is configured to perform wireless communication while the power reception module is receiving the power. | 12-05-2013 |
20130324052 | WIRELESS COMMUNICATION DEVICE AND WIRELESS COMMUNICATION SYSTEM - According to an embodiment, a wireless communication device includes a first wireless communication section, a wireless power receiving section and a wireless control section. The first wireless communication section is configured to transmit and receive a first wireless signal. The wireless power receiving section is configured to receive power by a second wireless signal. The wireless control section is configured to control the first wireless communication section according to a wireless power reception state of the wireless power receiving section. The wireless control section activates the first wireless communication section after wireless power reception by the wireless power receiving section is started. | 12-05-2013 |
20130343254 | COMMUNICATION DEVICE - A communication device includes a receiver, a transmitter and an interruption module. The receiver receives an allocation signal indicating a first period usable by the communication device and a second period usable by a plurality of communication devices including the communication device. The transmitter transmits a transmission signal in the first period. If the transmission of the transmission signal is completed within the first period, the interruption module interrupts at least a part of power supply to the receiver in the second period. If the transmission of the transmission signal is not completed within the first period and directivity of radio waves used by a second communication device includes a direction of the communication device in a communication period allocated before the second period, the transmitter transmits the transmission signal in the second period. | 12-26-2013 |
20140133338 | COMMUNICATION APPARATUS - The first wireless communication unit configured to wirelessly communicate with a first wireless apparatus on a first wireless network. The beacon transmitting unit cyclically transmits a beacon signal to the first wireless apparatus via the first wireless communication unit. The period determiner determines a transmission permission period during which data transmission by the first wireless apparatus is permitted. The notification unit notifies a control signal specifying the transmission permission period to the first wireless apparatus via the beacon signal. The power managing unit performs control so that power supply to the first wireless communication unit is suspended during a suspension period, the suspend period being a period except both the transmission permission period and a transmission timing period of the beacon signal within a whole period. | 05-15-2014 |