Patent application number | Description | Published |
20080212696 | Radio-Communication Device and Radio-Communication Method - The disclosed invention determines whether a reception packet is an MM packet or a GF packet with precision and avoids unnecessary decoding operations performed at the GF-packet-reception time and inefficient communications. | 09-04-2008 |
20090207765 | Wireless Communication System, Wireless Communication Apparatus, and Wireless Communication Method - A wireless communication system is disclosed. The wireless communication system performs data transmission using spatially multiplexed streams from a first terminal including N antennas to a second terminal including M antennas (N and M are integers larger than or equal to 2 and N>H). | 08-20-2009 |
20090219184 | Signal Processor, Control Method, and Wireless Communication Device - There is provided a signal processor with a plurality of antennas connected for transmitting and receiving wireless signals, including a plurality of analog reception processing units, AD converters, DA converters, and analog transmission processing units, wherein each of the analog reception processing units converts the wireless signal received through the antenna into an analog baseband signal and outputs the signal to the AD converter, each of the DA converters converts the digital baseband signal into analog format and outputs the signal, and each of the analog transmission processing units shifts the frequency band of the analog baseband signal output from the DA converter to the high frequency side. The signal processor further includes a transmission switch which switches among the DA converters respectively connected to the analog transmission processing units and a reception switch which switches among the AD converters respectively connected to the analog reception processing units. | 09-03-2009 |
20090305629 | Receiving Apparatus, Receiving Method and Wireless Communication System - There is provided a receiving apparatus including a plurality of antennas, a phase difference detection unit to detect a phase difference of each of a plurality of received signals received by the plurality of antennas, a phase adjustment unit to align phase of the plurality of received signals based on the phase difference detected by the phase difference detection unit, an adding unit to add the plurality of received signals with the phase aligned by the phase adjustment unit together, and a synchronous detection unit to perform synchronous detection using a signal obtained by addition in the adding unit. | 12-10-2009 |
20090323591 | Receiving Apparatus, Receiving Method and Wireless Communication System - A receiving apparatus is provided which includes a receiving unit to receive a radio signal, a transfer function estimation unit to estimate a transfer function of a communication path of the radio signal, and a cross-correlation calculation unit to calculate cross-correlation between a synchronous signal contained in a radio signal received by the receiving unit and a known synchronous signal multiplied by the transfer function estimated by the transfer function estimation unit. | 12-31-2009 |
20100008407 | COMMUNICATION APPARATUS AND COMMUNICATION CALIBRATION METHOD - There is provided a communication apparatus, including a transmission unit that transmits information by a plurality of systems and a reception unit that receives information by a plurality of systems, wherein the transmission unit includes a calibration information generation unit that generates calibration information transmitted for each the system and a calibration information generation notification generation unit that generates a calibration information generation notification indicating that the calibration information has been generated by the calibration information generation unit for each system, and the reception unit includes a calibration information detection unit that starts measurement of time based on reception of the calibration information generation notification and detecting calibration information turned back by the transmission unit for each system after a fixed time passes after starting measurement of time. | 01-14-2010 |
20100020857 | APPARATUS AND METHOD FOR WIRELESS COMMUNICATION, AND COMPUTER PROGRAM - A wireless communication apparatus includes a plurality of antenna branches for transmitting and receiving a wireless communication signal, a calibration coefficient calculator for calculating a calibration coefficient for each frequency band, the calibration coefficient correcting an imbalance in phase and amplitude existing between the antenna branches, a coefficient storage memory for storing the calibration coefficient of each frequency band, a calibration coefficient reader for reading the calibration coefficient of a frequency band of one of a transmission signal and a reception signal as a target to be calibrated, a calibration coefficient interpolator for interpolating a calibration coefficient of the frequency band if the coefficient storage memory stores no corresponding calibration coefficient of the frequency band, and a calibration coefficient multiplier for multiplying one of the transmission signal and the reception signal by one of the read calibration coefficient and the interpolated calibration coefficient. | 01-28-2010 |
20100026561 | WIRELESS COMMUNICATION DEVICE, WIRELESS COMMUNICATION METHOD, AND COMPUTER PROGRAM - A wireless commutation device includes: an antenna unit including antennas transmitting and receiving wireless signals; an analog processing unit including transmitting analog circuits and receiving analog circuits processing analog transmitting and received signals; a digital processing unit processing digital transmitting and received signals; an inter-antenna propagation loss determination unit determining propagation losses between the antennas; a loopback transfer function gain acquisition unit acquiring, through loopback of a calibration signal between the antennas, gains of loopback transfer functions between antenna branches; a loopback transfer function gain correction unit correcting the gains by using the propagation losses; a correction coefficient determination unit determining the respective gain ratios among the receiving analog circuits and the transmitting analog circuits by using the corrected gains, and determining correction coefficients by using the gain ratios; and a gain calibration processing unit performing gain calibration on the digital transmitting and received signals by using the correction coefficients. | 02-04-2010 |
20100091673 | WIRELESS COMMUNICATION APPARATUS AND WIRELESS COMMUNICATION, AND COMPUTER PROGRAM - A wireless communication apparatus includes a reception unit configured to receive packets in multiple formats in which two or more different types of preamble information and intra-header control information are multiplexed, a demodulation and decode unit configured to demodulate and decode the received packets, and a measurement unit configured to measure a sending end time of the reception packets by selectively referring to any one of the intra-header control information on the basis of a transmission mode supported by the demodulation and decode unit. | 04-15-2010 |
20100254368 | INFORMATION RECEIVING APPARATUS AND INFORMATION TRANSMITTING APPARATUS - [Problem] To allow an information receiving apparatus receiving a wireless packet for data streaming transmission from an information transmitting apparatus to communicate with another information transmitting apparatus. | 10-07-2010 |
20110075606 | Wireless communication system, wireless communication apparatus, and wireless communication method - A wireless communication system is disclosed. The system performs data transmission from a first terminal including N antennas to a second terminal including M antennas using spatially multiplexed streams (N and M are integers larger than or equal to 2). | 03-31-2011 |
20110096729 | WIRELESS COMMUNICATION SYSTEM, WIRELESS COMMUNICATION APPARATUS, WIRELESS COMMUNICATION METHOD, AND COMPUTER PROGRAM - Disclosed is radar wave detection and DFS (dynamic frequency selection) with high efficiency while considering, for instance, the power consumption of each communication station within an autonomous distributed network. At least one communication station runs in an interference avoidance operation mode, operates a radar wave detection section, and fulfills the obligation to issue instructions for radar wave detection and DFS for an approximately predetermined period of time. After the lapse of the approximately predetermined period of time, another communication station switches to the interference avoidance operation mode and assumes the obligation to issue instructions for radar wave detection and DFS. In other words, two or more communication stations sequentially run in the interference avoidance operation mode in a time sharing manner. Therefore, the average power consumption of the communication stations decreases. | 04-28-2011 |
20110116425 | RADIO COMMUNICATION SYSTEM, RADIO COMMUNICATION DEVICE, RADIO COMMUNICATION METHOD, AND PROGRAM - Provided is a radio communication system including a first radio communication device, and a second radio communication device that communicates with a radio communication device operating as a master unit and being connected, wherein the second radio communication device includes a communication unit that communicates with the radio communication device being connected, and a control unit that controls the communication unit to send a response packet to the first radio communication device when a response request packet broadcasted from the first radio communication device is received by the communication unit. | 05-19-2011 |
20110122835 | RADIO COMMUNICATION DEVICE, RADIO COMMUNICATION SYSTEM, RADIO COMMUNICATION METHOD, AND PROGRAM - There is provided a radio communication device including a reception unit which receives information indicating a connection state or a communication capability of another radio communication device which the radio communication device attempts to connect to, and a selection unit which selects, depending on the information received by the reception unit, which communication is to be performed from among first communication in which a direct connection to such other radio communication device is established and direct communication with such other radio communication device is performed, second communication in which a connection to such other radio communication device via a base station is established and direct communication with such other radio communication device is performed, and third communication in which a connection to such other radio communication device via the base station is established and indirect communication with such other radio communication device via the base station is performed. | 05-26-2011 |
20110128946 | RADIO COMMUNICATION DEVICE, RADIO COMMUNICATION SYSTEM, PROGRAM, AND RADIO COMMUNICATION METHOD - Provided is a radio communication device which includes a communication unit that communicates with a connected radio communication device operating as a master unit, and a control unit that, when a prescribed inquiry packet sent from another radio communication device is received by the communication unit, controls the communication unit to send a response packet containing service information indicating a service with which the radio communication device is compatible to said another radio communication device. | 06-02-2011 |
20110179442 | Information processing device, display device, and information processing system - Provided is an information processing device including a communication unit for transmitting content data to a plurality of display devices connected, a request check unit for causing other display devices to display a check screen for an arbitrary request upon reception of the request from one of the plurality of display devices, and determining whether to permit the request in accordance with a user operation in the other display devices which display the check screen, and a control unit for performing a response control for the request when the request check unit permits the request. | 07-21-2011 |
20110194489 | WIRELESS COMMUNICATION DEVICE, WIRELESS COMMUNICATION SYSTEM, PROGRAM, AND WIRELESS COMMUNICATION METHOD - Provided is a wireless communication device including a receiving unit that receives, from one or more than one first wireless communication devices, information indicating an order of each of the one or more than one first wireless communication devices in a queue for data communication with a second wireless communication device, an order management unit that manages an order of its own device in the queue based on the information received by the receiving unit from the one or more than one first wireless communication devices, and a transmitting unit that transmits information indicating the order of its own device in the queue managed by the order management unit. | 08-11-2011 |
20110299461 | WIRELESS COMMUNICATION DEVICE, PROGRAM, AND WIRELESS COMMUNICATION METHOD - There is provided a wireless communication device including a determination unit that determines a location region of the wireless communication device, a communication unit that wirelessly communicates with another wireless communication device, and a setting unit that sets a frequency in accordance with the location region of the wireless communication device determined by the determination unit to the communication unit. The determination unit determines a location region of the wireless communication device based on a plurality of pieces of location region information of the wireless communication device acquired by a plurality of different methods. | 12-08-2011 |
20120134362 | RECEIVER, RECEPTION METHOD, PROGRAM AND COMMUNICATION SYSTEM - Disclosed herein is a receiver including: a reception section adapted to sequentially receive a plurality of packets from a transmitter; a first processing section adapted to output a predetermined number of packets received by the reception section all together if the predetermined number of packets are received without any loss by the reception section; a second processing section adapted to accept the predetermined number of packets output all together from the first processing section; a detection section adapted to detect a predetermined request; and a control section adapted to control the first processing section to output a packet, received by the reception section, to the second processing section each time the reception section receives a packet if the detection section detects the predetermined request. | 05-31-2012 |
20120147799 | IMAGE PROCESSING DEVICE, IMAGE REPRODUCTION DEVICE, AND IMAGE REPRODUCTION SYSTEM - According to an illustrative embodiment, a data transmission device is provided. The device includes a communication unit for transmitting data to a receiver and transmitting data having a changed characteristic to the receiver, wherein when transmitting the data the device transmits timing information to the receiver indicating a time that the device will begin transmitting the data having a changed characteristic. | 06-14-2012 |
20120154386 | IMAGE GENERATION DEVICE, PROGRAM, IMAGE DISPLAY SYSTEM, AND IMAGE DISPLAY DEVICE - According to an illustrative embodiment, an apparatus for generating image data is provided. The apparatus includes a communication unit for receiving information related to a display orientation of an image on a display unit of an image display device; and an image generation unit for generating image data according to the information. | 06-21-2012 |
20120155518 | WIRELESS COMMUNICATION APPARATUS AND WIRELESS COMMUNICATION METHOD - [Object] To prevent or reduce the degradation in transmission characteristics caused by fast fading (fluorescent lamp interference) to achieve optimized throughput. | 06-21-2012 |
20120183231 | IMAGE PROCESSING DEVICE, IMAGE PROCESSING METHOD, AND PROGRAM - Provided is an image processing device including a frame image generation unit for generating a frame image in which a first image and a second image are arranged next to each other, and a compression processing unit for compressing the frame image in units of macroblocks. The frame image generation unit arranges the first image and the second image such that a boundary between the first image and the second image coincides with boundaries of the macroblocks. | 07-19-2012 |
20120191780 | WIRELESS COMMUNICATION DEVICE, PROGRAM, AND WIRELESS COMMUNICATION SYSTEM - There is provided a wireless communication device including a wireless communication unit, a communication control unit configured to control a process of detecting a nearby wireless communication device by the wireless communication unit, a connection process to the nearby wireless communication device detected in the detection process, and communication of content data with the nearby wireless communication device connected in the connection process, and a storage unit that stores content data. The communication control unit, on the basis of information received from the nearby wireless communication device in the detection process, determines if one of the content data in the storage unit or content data in the nearby wireless communication device has been updated relative to the other, and controls the connection process performed when the update is determined. | 07-26-2012 |
20120213300 | WIRELESS COMMUNICATION SYSTEM, WIRELESS COMUNICATION APPARATUS AND WIRELESS COMMUNICATION METHOD - A wireless communication system which performs data transmission using spatially multiplexed streams from a first terminal including N antennas to a second terminal including M antennas (N is an integer of 2 or more and M is an integer of 1 or more) is disclosed. The system includes notifying means, training means, channel matrix estimation means, beamforming information feedback means, transmission weight matrix setting means, and beamforming means. | 08-23-2012 |
20120218918 | WIRELESS COMMUNICATION APPARATUS, WIRELESS COMMUNICATION METHOD, PROGRAM, AND WIRELESS COMMUNICATION SYSTEM - Provided is a wireless communication apparatus including an application, a communication control unit for controlling a search process for discovering at least one peripheral wireless communication apparatus and a connection process to a peripheral wireless communication apparatus, and a display control unit for generating a display screen including display of the at least one peripheral wireless communication apparatus discovered by the search process. The communication control unit starts control of the search process by start of the application, and controls the connection process to a wireless communication apparatus selected on the display screen. | 08-30-2012 |
20120230308 | WIRELESS COMMUNICATION APPARATUS, WIRELESS COMMUNICATION METHOD, AND WIRELESS COMMUNICATION SYSTEM - Provided is a wireless communication apparatus including a communication unit capable of wireless communication with another wireless communication apparatus, a determination unit for determining whether the communication unit is in proximity to the other wireless communication apparatus, and a control unit for performing, in a case the communication unit is determined to be in proximity to the other wireless communication apparatus, a connection procedure between the communication unit and the other wireless communication apparatus. | 09-13-2012 |
20120254354 | COMMUNICATION DEVICE, RECEIVING DEVICE, COMMUNICATION METHOD, AND COMMUNICATION SYSTEM - There is provided a communication device including a communication unit configured to receive communication data transmitted/received between a transmitting device and a receiving device that is a transmission target of transmission data transmitted by the transmitting device by unicast, a data determination unit configured to determine data to be used for a process from among the received communication data, and a processing unit configured to process the data determined to be used for the process. The processing unit, in processing the determined data, prevents the communication unit from responding to the transmitting device or the receiving device. | 10-04-2012 |
20120256965 | DISPLAY CONTROL DEVICE, DISPLAY CONTROL METHOD, PROGRAM, AND DISPLAY CONTROL SYSTEM - There is provided a display control device, including a communication section for communicating with an external device, a position specification section for specifying positions of an imaging device, which captures an image, and a display device, which displays the image, a process determination section for determining whether to cause the captured image to be reversed in a horizontal direction on the basis of the positions of the display device and the imaging device and a processing section for selectively reversing the captured image in the horizontal direction, wherein the processing section causes the display device to display the image reversed in the horizontal direction by reversing the captured image in the horizontal direction, if the image is determined to be reversed in the horizontal direction, and causes the display device to display the captured image, if the image is determined not to be reversed in the horizontal direction. | 10-11-2012 |
20120269158 | WIRELESS COMMUNICATION SYSTEM, WIRELESS COMMUNICATION APPARATUS, AND WIRELESS COMMUNICATION METHOD - A wireless communication system is disclosed. The wireless communication system performs data transmission using spatially multiplexed streams from a first terminal including N antennas to a second terminal including M antennas (N and M are integers larger than or equal to 2 and N>M). | 10-25-2012 |
20120281631 | WIRELESS COMMUNICATION SYSTEM, WIRELESS COMMUNICATION APPARATUS, AND WIRELESS COMMUNICATION METHOD - A wireless communication system is disclosed. The wireless communication system performs data transmission using spatially multiplexed streams from a first terminal including N antennas to a second terminal including M antennas (N and M are integers larger than or equal to 2 and N>M). | 11-08-2012 |
20120300612 | COMMUNICATION APPARATUS, COMMUNICATION METHOD, AND COMMUNICATION SYSTEM - There is provided a communication apparatus including a communication unit that receives first communication data transmitted from a transmitting apparatus to a first receiving apparatus through unicast and second communication data transmitted from the transmitting apparatus to a second receiving apparatus, respectively and a processing unit that processes processing data included in the received first communication data and second communication data. When there is missing data in either of first processing data included in the first communication data and second processing data included in the second communication data, the processing unit executes processing using the other processing data in which there is no missing data, and the processing unit does not make the communication unit transmit a reply with respect to external apparatuses. | 11-29-2012 |
20120311644 | COMMUNICATION APPARATUS, COMMUNICATION METHOD, AND COMMUNICATION SYSTEM - There is provided a communication apparatus including: a device detecting unit detecting devices capable of establishing a wireless connection; a user input unit selecting, based on a user operation, a combination of sync devices to carry out a pairing process out of a plurality of sync devices detected by the device detecting unit; a message transmitting unit transmitting an autosetup request message to one sync device out of the selected sync devices; a message receiving unit receiving an autosetup response message from a transmission destination of the autosetup request message; a wireless connection unit establishing a wireless connection with each of the selected sync devices; and a reproduction starting unit wirelessly transmitting, as a source device, data to be reproduced to each of the sync devices after establishment of the wireless connections. | 12-06-2012 |
20130315177 | WIRELESS COMMUNICATION SYSTEM, WIRELESS COMUNICATION APPARATUS AND WIRELESS COMMUNICATION METHOD - A wireless communication system which performs data transmission using spatially multiplexed streams from a first terminal including N antennas to a second terminal including M antennas (N is an integer of 2 or more and M is an integer of 1 or more) is disclosed. The system includes notifying means, training means, channel matrix estimation means, beamforming information feedback means, transmission weight matrix setting means, and beamforming means. | 11-28-2013 |
20130315222 | WIRELESS COMMUNICATION SYSTEM, WIRELESS COMMUNICATION APPARATUS, AND WIRELESS COMMUNICATION METHOD - A wireless communication system is disclosed. The wireless communication system performs data transmission using spatially multiplexed streams from a first terminal including N antennas to a second terminal including M antennas (N and M are integers larger than or equal to 2 and N>M). | 11-28-2013 |
20130315330 | WIRELESS COMMUNICATION SYSTEM, WIRELESS COMUNICATION APPARATUS AND WIRELESS COMMUNICATION METHOD - A wireless communication system which performs data transmission using spatially multiplexed streams from a first terminal including N antennas to a second terminal including M antennas (N is an integer of 2 or more and M is an integer of 1 or more) is disclosed. The system includes notifying means, training means, channel matrix estimation means, beamforming information feedback means, transmission weight matrix setting means, and beamforming means. | 11-28-2013 |
20130315331 | WIRELESS COMMUNICATION SYSTEM, WIRELESS COMMUNICATION APPARATUS, AND WIRELESS COMMUNICATION METHOD - A wireless communication system is disclosed. The wireless communication system performs data transmission using spatially multiplexed streams from a first terminal including N antennas to a second terminal including M antennas (N and M are integers larger than or equal to 2 and N>M). | 11-28-2013 |
20130315332 | WIRELESS COMMUNICATION SYSTEM, WIRELESS COMMUNICATION APPARATUS, AND WIRELESS COMMUNICATION METHOD - A wireless communication system is disclosed. The system performs data transmission from a first terminal including N antennas to a second terminal including M antennas using spatially multiplexed streams (N and M are integers larger than or equal to 2). | 11-28-2013 |
20130315333 | WIRELESS COMMUNICATION SYSTEM, WIRELESS COMMUNICATION APPARATUS, AND WIRELESS COMMUNICATION METHOD - A wireless communication system is disclosed. The wireless communication system performs data transmission using spatially multiplexed streams from a first terminal including N antennas to a second terminal including M antennas (N and M are integers larger than or equal to 2 and N>M). | 11-28-2013 |
20130315334 | WIRELESS COMMUNICATION SYSTEM, WIRELESS COMMUNICATION APPARATUS, AND WIRELESS COMMUNICATION METHOD - A wireless communication system is disclosed. The system performs data transmission from a first terminal including N antennas to a second terminal including M antennas using spatially multiplexed streams (N and M are integers larger than or equal to 2). | 11-28-2013 |
20130315335 | WIRELESS COMMUNICATION SYSTEM, WIRELESS COMMUNICATION APPARATUS, AND WIRELESS COMMUNICATION METHOD - A wireless communication system is disclosed. The system performs data transmission from a first terminal including N antennas to a second terminal including M antennas using spatially multiplexed streams (N and M are integers larger than or equal to 2). | 11-28-2013 |
20130322379 | WIRELESS COMMUNICATION SYSTEM, WIRELESS COMMUNICATION APPARATUS, AND WIRELESS COMMUNICATION METHOD - A wireless communication system is disclosed. The wireless communication system performs data transmission using spatially multiplexed streams from a first terminal including N antennas to a second terminal including M antennas (N and M are integers larger than or equal to 2 and N>M). | 12-05-2013 |
20130343369 | WIRELESS COMMUNICATION SYSTEM, WIRELESS COMMUNICATION APPARATUS, AND WIRELESS COMMUNICATION METHOD - A wireless communication system is disclosed. The system performs data transmission from a first terminal including N antennas to a second terminal including M antennas using spatially multiplexed streams (N and M are integers larger than or equal to 2). | 12-26-2013 |
20140099987 | WIRELESS COMMUNICATION DEVICE, PROGRAM, AND COMMUNICATION CONTROL METHOD - There is provided a wireless communication device including a wireless communication section which receives, in a group for wireless communication, information indicating a state of content use or provision by another device in the group, a calculation section which calculates, based on the received information, a number of devices operating a function of providing the content in the group and a number of devices operating a function of using the content in the group, and a judgment section which judges whether to change a topology of the group based on a relationship between the number of devices operating the function of providing the content and the number of devices operating the function of using the content and on states of content provision and use by a device operating as a master unit in the group. | 04-10-2014 |
20140132536 | INFORMATION PROCESSING DEVICE, COMMUNICATION SYSTEM, AND INFORMATION PROCESSING METHOD - There is provided an information processing device including an operation acceptance unit configured to accept a user operation related to an image based on image data received from another information processing device using short-range wireless communication when the image is displayed on a display unit, and a controller configured to perform control in a manner that notification information for issuing a notification that the user operation is accepted is output when the user operation is accepted, and control data corresponding to the user operation is transmitted to the other information processing device. | 05-15-2014 |
20140219378 | WIRELESS COMMUNICATION SYSTEM, WIRELESS COMMUNICATION APPARATUS, AND WIRELESS COMMUNICATION METHOD - A wireless communication system is disclosed. The system performs data transmission from a first terminal including N antennas to a second terminal including M antennas using spatially multiplexed streams (N and M are integers larger than or equal to 2). | 08-07-2014 |
20140219385 | WIRELESS COMMUNICATION SYSTEM, WIRELESS COMMUNICATION APPARATUS AND WIRELESS COMMUNICATION METHOD - A wireless communication system which performs data transmission using spatially multiplexed streams from a first terminal including N antennas to a second terminal including M antennas (N is an integer of 2 or more and M is an integer of 1 or more) is disclosed. The system includes notifying means, training means, channel matrix estimation means, beamforming information feedback means, transmission weight matrix setting means, and beamforming means. | 08-07-2014 |
20140254578 | WIRELESS COMMUNICATION SYSTEM, WIRELESS COMMUNICATION APPARATUS, AND WIRELESS COMMUNICATION METHOD - A wireless communication system is disclosed. The wireless communication system performs data transmission using spatially multiplexed streams from a first terminal including N antennas to a second terminal including M antennas (N and M are integers larger than or equal to 2 and N>M). | 09-11-2014 |
20150071147 | WIRELESS COMMUNICATION DEVICE INFORMATION PROCESSING DEVICE, AND COMMUNICATION METHOD - Users are enabled to readily use desired applications. | 03-12-2015 |
20150085847 | WIRELESS COMMUNICATION DEVICE, INFORMATION PROCESSING DEVICE, AND COMMUNICATION METHOD - Users are enabled to readily use desired applications. | 03-26-2015 |