Patent application number | Description | Published |
20100231451 | ANTENNA DEVICE - An antenna device has a linear antenna element; a passive element section provided in proximity to the antenna element; and a control section that controls the passive element section. The passive element section has a linear line laid in parallel to the antenna element; and an impedance adjustment section that adjusts impedance of the passive element section. A compact antenna device capable of switching its directivity by means of electrical operation can be provided. | 09-16-2010 |
20100231453 | ARRAY ANTENNA APPARATUS INCLUDING MULTIPLE STEERABLE ANTENNAS AND CAPABLE OF AVOIDING AFFECTION AMONG STEERABLE ANTENNAS - A steerable antenna includes an radiating antenna element and parasitic antenna elements. Each of the parasitic antenna elements is provided with a pair of PIN diodes. On each of control lines connecting the PIN diodes to a controller, inductors are provided at predetermined intervals on portions of the control line electromagnetically coupled to another steerable antenna. The intervals for providing the inductors is set to such a length that substantially no resonance occurs in a section of the control line between the inductors at an operating frequency of the steerable antenna. | 09-16-2010 |
20100246496 | WIRELESS COMMUNICATION SYSTEM HAVING MIMO COMMUNICATION CAPABILITY AND HAVING MULTIPLE RECEIVING ANTENNAS TO BE SELECTED - Before start of streaming, a server apparatus obtains from client apparatuses their respective numbers of antenna combinations, determines a training time t | 09-30-2010 |
20110065391 | WIRELESS COMMUNICATION APPARATUS FOR CHANGING DIRECTIONAL PATTERN OF VARIABLE DIRECTIVITY ANTENNA ACCORDING TO VARIATIONS IN RADIO WAVE PROPAGATION ENVIROMENT - When a variable directivity antenna apparatus is controlled to form an initial composite directional pattern, RSSI is measured, and a weak electric field group or an intense electric field group is selected based on the measured RSSI. When the variable directivity antenna apparatus is controlled to form the composite directional patterns included in the selected composite directional pattern group, PER for each of the composite directional patterns is measured, and one composite directional pattern is selected from among the composite directional patterns included in the selected composite directional pattern group based on the measured PER, so that the variable directivity antenna apparatus is controlled to form the selected composite directional pattern. | 03-17-2011 |
20110102287 | VARIABLE DIRECTIVITY ANTENNA APPARATUS PROVIDED WITH ANTENNA ELEMENTS AND AT LEAST ONE PARASITIC ELEMENT CONNECTED TO GROUND VIA CONTROLLED SWITCH - A variable directivity antenna apparatus is configured to include a parasitic element, a plurality of antenna elements each provided to be away from the parasitic element by an electrical length of a quarter-wavelength, and a | 05-05-2011 |
20110117859 | WIRELESS COMMUNICATION DEVICE, WIRELESS COMMUNICATION METHOD, PROGRAM, AND INTEGRATED CIRCUIT - A first wireless communication device ( | 05-19-2011 |
20110143698 | DIRECTIONAL PATTERN DETERMINING METHOD CAPABLE OF QUICKLY SELECTING OPTIMUM DIRECTIONAL PATTERN - A plurality of directional patterns are classified into groups and stored in a directional pattern memory, such that among the plurality of directional patterns, the directional patterns strongly correlated with each other are classified into the same group, while the directional patterns weakly correlated with each other are classified into the different groups. One directional pattern is selected from each group in the directional pattern memory. One directional pattern is determined from the selected directional patterns, in accordance with a communication quality of signals each received when each one of the selected directional patterns is set for steerable antenna element. The determined directional pattern is set for the steerable antenna element. | 06-16-2011 |
20110176420 | WIRELESS TRANSMISSION DEVICE, WIRELESS TRANSMISSION METHOD, PROGRAM, AND INTEGRATED CIRCUIT - A wireless transmission device ( | 07-21-2011 |
20110193761 | ANTENNA APPARATUS INCLUDING FEEDING ELEMENTS AND PARASITIC ELEMENTS ACTIVATED AS REFLECTORS - An antenna apparatus includes an antenna element and a parasitic element provided on a first surface of a dielectric substrate, and an antenna element and a parasitic element provided on a second surface of the dielectric substrate. Each of the parasitic elements is provided at a position away from the antenna elements by a distance of one-fourth of an operating wavelength λ in communication. | 08-11-2011 |
20110217933 | WIRELESS COMMUNICATIONS APPARATUS AND WIRELESS COMMUNICATIONS METHOD - A wireless communications apparatus ( | 09-08-2011 |
20110222465 | COMMUNICATION TERMINAL, RELAY DEVICE, WIRELESS COMMUNICATION SYSTEM, WIRELESS COMMUNICATION CONTROL METHOD, AND PROGRAM - A communication terminal is connected to a wireless communication system in which an access point and a communication destination device are connected, and performs wireless communication with the communication destination device. Specifically, the communication terminal includes: a connection communication availability inquiring unit ( | 09-15-2011 |
20110244808 | WIRELESS COMMUNICATIONS APPARATUS, WIRELESS COMMUNICATIONS METHOD, PROGRAM, AND INTEGRATED CIRCUIT - A wireless communications apparatus ( | 10-06-2011 |
20110267975 | COMMUNICATION APPARATUS, COMMUNICATION SYSTEM, COMMUNICATION METHOD, PROGRAM, AND INTEGRATED CIRCUIT - A communication apparatus ( | 11-03-2011 |
20120027056 | ARRAY ANTENNA APPARATUS INCLUDING MULTIPLE STEERABLE ANTENNAS AND CAPABLE OF ELIMINATING INFLUENCE OF SURROUNDING METAL COMPONENTS - An antenna unit is provided with: steerable antennas, each having one active antenna element and two parasitic antenna element; and metal blocks. Each of the active antenna elements is associated with at least one of the metal blocks such that the metal block is disposed remote from the active antenna element by a predetermined distance and operates as a reflector for the active antenna element. Each of the parasitic antenna elements is provided with a switching circuit for changing an electrical length of the parasitic antenna element, and the parasitic antenna element operates as a reflector for an active antenna element of the same steerable antenna as the parasitic antenna element by changing the electrical length using the switching circuit. | 02-02-2012 |
20120028596 | WIRELESS COMMUNICATION APPARATUS CAPABLE OF RAPIDLY CHANGING DIRECTIONAL PATTERNS OF MULTIPLE STEERABLE ANTENNA APPARATUSES - A directional pattern table memory stores combined directional pattern groups in each of which combined directional patterns are ordered by different predetermined priority according to a different radio propagation environment. A controller computes a communication performance expected value based on RSSIs for when an initial combined directional pattern is set on steerable antenna apparatuses; selects one combined directional pattern group based on relative strengths of RSSIs; and according to the priority, sequentially sets combined directional patterns of the selected one combined directional pattern group, on the steerable antenna apparatuses, computes a communication performance value based on a PHY rate and a PER at each of sequential settings, and performs communication using a combined directional pattern with a communication performance value that first exceeds the communication performance expected value. | 02-02-2012 |
20120057489 | METHOD FOR SELECTING WIRELESS COMMUNICATION PATH - Disclosed is a method of selecting a communication path having wider communication bands with respect to wireless communication apparatuses capable of performing direct communication between the wireless communication apparatuses without routing through a relay apparatus. A first wireless communication apparatus determines the capability of the relay apparatus to determine a threshold and compares the received signal strength indicator of a packet transmitted from a second wireless communication apparatus to the first wireless communication apparatus by direct communication with the threshold to determine a communication path for a packet to be transmitted to the second wireless communication apparatus. | 03-08-2012 |
20120147777 | ACCESS POINT TERMINAL, WIRELESS COMMUNICATION TERMINAL, WIRELESS COMMUNICATION SYSTEM, WIRELESS COMMUNICATION METHOD, PROGRAM AND INTEGRATED CIRCUIT - An access point terminal includes: a communication-terminal-status determination unit which determines a communication status of one wireless communication terminal out of wireless communication terminals, by obtaining a wireless signal transmitted or received by the one wireless communication terminal; and a frequency control unit which uses (i) a first frequency band for wireless communication with the one wireless communication terminal and (ii) a frequency band other than the first frequency band for the wireless communication with one or more of the wireless communication terminals other than the one wireless communication terminal, when the communication-terminal-status determination unit determines that the communication status of the one wireless communication terminal satisfies a predetermined condition. | 06-14-2012 |
20120163324 | ACCESS POINT TERMINAL, WIRELESS COMMUNICATION TERMINAL, WIRELESS COMMUNICATION SYSTEM, WIRELESS COMMUNICATION METHOD, PROGRAM AND INTEGRATED CIRCUIT - An access point terminal includes: a wireless communication interface which transmits and receives a wireless signal; a device information obtaining unit which obtains supported frequency information through the wireless communication interface, the supported frequency information being for specifying one or more frequency bands in which the wireless communication terminal is capable of performing wireless communication; and a connection information distribution unit which (i) selects a frequency band out of the one or more frequency bands indicated in the supported frequency information obtained by the device information obtaining unit and (ii) distributes connection information to the wireless communication terminal through the wireless communication interface, the connection information being for causing the wireless communication terminal to perform the wireless communication in the selected frequency band. | 06-28-2012 |
20120287807 | WIRELESS COMMUNICATION APPARATUS SELECTING ONE OF DIRECT COMMUNICATION PATH AND INDIRECT COMMUNICATION PATH VIA ACCESS POINT APPARATUS - A first wireless communication apparatus acquires communication qualities of a first communication path, a second communication path and a direct communication path, respectively, adopts as a communication quality of an indirect communication path a lower communication qualities selected from the communication qualities of the first and second communication paths, and selects a communication path having a higher one of a communication performance corresponding to the direct communication path and a communication performance corresponding to the indirect communication path. | 11-15-2012 |
20120331165 | SERVER DEVICE FOR TRANSMITTING AND RECEIVING DATA TO AND FROM CLIENT DEVICE THROUGH ACCESS POINT - A server device for transmitting and receiving data to and from a client device over a wireless communication network including an access point, the server device comprising: wireless connection determining means for determining whether or not the client device is wirelessly communicatively connected over the wireless communication network; security determining means for determining whether or not the client device is securely connected to the access point; and permitting means for permitting an automatic connection of the client device to the server device, when the wireless connection determining means determines that the client device is wirelessly communicatively connected, and when the security determining means determines that the client device is securely connected to the access point. | 12-27-2012 |
20130071094 | CONTENT TRANSMISSION SYSTEM INCLUDING CONTENT RECORDING APPARATUS AND CONTENT PLAYBACK APPARATUS CONNECTED THROUGH WIRELESS TRANSMISSION PATH, CAPABLE OF RECORDING PROGRAM CONTENT AND SIMULTANEOUSLY PLAYING BACK PROGRAM CONTENT IN REAL TIME - A content recording apparatus comprising: an encoding unit for encoding program content at a data rate; a HDD for storing the encoded program content; a wireless transmitting and receiving unit for transmitting the encoded program content to a content playback apparatus; a data rate memory for storing the data rate at which the program content is encoded; and a data rate setting unit for setting the data rate stored in the data rate memory, on the encoding unit. The wireless transmitting and receiving unit receives result information from the content playback apparatus, the result information indicating whether or not the program content transmitted to the content playback apparatus has been correctly played back on the content playback apparatus. The data rate setting unit determines, based on the result information, a data rate at which the program content is encoded, and stores the data rate in the data rate memory. | 03-21-2013 |