Abstract: 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.

Abstract: When controlling antenna apparatuses to select a predetermined combination from among a plurality of combinations of antenna elements, a controller measures RSSIs of wireless signals received by the antenna apparatuses, and sets a detection packet interval and a changeover threshold based on measured RSSIs with reference to a detection packet interval table and a changeover threshold table. Then, the combination of the antenna elements is changed over by using the set detection packet interval and the changeover threshold.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: A communication apparatus (10) includes: a measurement data transmitting unit (120) which transmits a first measurement data to a relay apparatus (20), and a second measurement data to a partner apparatus (30); a response data receiving unit (130) which receives first and second response data; a network measurement unit (140) which calculates a first communication time using the first response data, and a second communication time using the second response data; a connection mode judging unit (150) which judges, based on a partner section communication time that is difference between the second and the first communication times, whether or not the relay apparatus (20) and the partner apparatus (30) are wirelessly connected; and a connection mode switching unit (160) which switches, when judged that the relay apparatus (20) and the partner apparatus (30) are wirelessly connected, the communication with the partner apparatus (30) from indirect to direct wireless communication.

Abstract: 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.

Abstract: A wireless communications apparatus (1) in the present invention transmits, via wireless communications, data recorded on a memory unit (13) to a recording apparatus (2). The wireless communications apparatus (1) includes: a communication area determining unit (19) determining whether or not the wireless communications apparatus (1) is in a communication area having a threshold value equal to MIDDLE or higher; a stillness detecting unit (15) detecting whether or not the wireless communications apparatus (1) remains still; and a wireless communications unit (17) starting to transmit, via the wireless communications, the data recorded on the memory unit (13) to the recording apparatus (2) in the case where (i) the communication area determining unit (19) determines that the wireless communications apparatus (1) is in the communication area having the threshold value equal to MIDDLE or higher, and (ii) the stillness detecting unit (15) detects that the wireless communications apparatus (1) remains still.

Abstract: An information processing terminal device (1) is provided which is reliably connectable to a desired server on the Internet and includes: a cable interface (3) that requests connection to a predetermined server; a connection information obtainment unit (4) that obtains, from the server, connection information which includes an IP address and is necessary for the connection to the server; an obtained IP address obtainment unit (8) that obtains the IP address assigned to a communication interface (2) connected to a different network; an IP address scheme determination unit (7) that determines whether or not the obtained IP address and the IP address included in the connection information have the same address scheme; an IP address setting management unit (6) that determines a method of setting the IP address and the connection information for the cable interface (3) and the communication interface (2); and a connection information setting unit (5) that sets and releases the IP address and the connection informa

Abstract: In the case where one set of EDCA access parameters is set, there are problems such as failure in performing QoS when a transmission rate is changed and a deterioration in transmission efficiency. A relay device is a wireless communication device which transmits received data according to a priority level of the data, including: a transmitting unit (11) which transmits received data; a rate measuring unit (12) which measures a rate at which the transmitting unit (11) transmits the data; and a transmission control unit (14) which adaptively controls a transmission waiting time for which the transmitting unit (11) waits until start of the transmission of the data, according to the transmission rate of the transmitting unit (11) which is measured by the rate measuring unit (12), wherein the transmitting unit (11) transmits the data according to transmission control by the transmission control unit (14).

Abstract: 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.

Abstract: To smoothly deliver data while guaranteeing real-time properties on home network which takes into account data capturing from public network, a relay device connects one or plural delivery servers having content stored therein, one or plural video display terminals and one or plural other PCs, the video display terminal including a user IF which receives the content stored on the delivery server and acquires information for specifying content according to an input of a user, an acquiring unit which acquires specifying information for specifying the delivery server having stored therein the content specified by the information, and a transmitting unit which transmits the specifying information acquired by the acquiring unit, to the relay device, and the relay device performs data transfer between the delivery server and the video display terminal at a predetermined priority set on the basis of the specifying information received from the video display terminal.

Abstract: A communication system includes communication devices; a switch device having coaxial terminal units to which the communication device are connected, a switch unit of entirely or individually connecting the coaxial terminal units, and a switch control unit of controlling the connection status of the switch unit; and a transmittal right control device. The transmittal right control device is connected to the terminal, and manages the connection status of the switch unit, receives from the communication devices requests for time for communication with other communication devices, determines assignment of time for communications between the communication devices, notifies the communication devices of the assignment, and instructs the switch control unit not to make signals interfere among the communication devices in different combinations for communications in the same time period.

Abstract: Provided is an in-home receiving terminal system capable of detecting that a receiving terminal device is outside a subscriber's house, and restricting viewing of cable television broadcasting by the receiving terminal device outside the subscriber's house. In the in-home receiving terminal system comprising a main terminal device and a sub-terminal device for receiving digital cable television broadcasting, the main terminal device and the sub-terminal device being connected to an in-home network, a link detecting portion of the sub-terminal device detects the status of a link connection with the in-home network, and a terminal control portion of the sub-terminal device controls activation/deactivation of a television reception tuner based on the detected status of the link connection.

Abstract: A communication control device with high confidentiality is provided, which allows content access only from devices in a specific group, and ensures that no content information is exposed to any devices for which content access is not allowed. A password selection portion selects a common password required for connecting to a network, or a secret password required for establishing a communication channel with a specific reception device. A transmission portion transmits contents or information associated therewith to the reception device via the network established by using the common password or the secret password.

Abstract: A transmitting system includes an Internet connecting unit, directly or indirectly connected with the Internet, which allows a plurality of communication units to perform communication through the Internet, and a media converter, connected with the Internet connecting unit by the first transmission medium, which converts a signal from the first transmission medium into a signal to a second transmission medium, converts a signal from the second transmission medium into a signal to the first transmission medium, and has a function of linking to the communication units. The transmitting system also includes a signal distributor, connected with the media converter and each of the plurality of communication units by the second transmission medium, which distributes a signal from the media converter and transfers the signal to the communication units, and transfers a signal from the communication units to the media converter.

Abstract: A video receiving system has one main-contract video receiver and at least one sub-contract video receiver connected to the main-contract video receiver via a network. The sub-contract video receiver has a) a video reception control unit which, when a video reception tuner unit receives a video signal, allows the video reception tuner unit to receive the video signal of a limited predetermined channel if a network connection detecting unit detects an unestablished connection with the main-contract video receiver; and b) a display signal output unit which outputs a display signal corresponding to the video signal received by the video reception tuner unit.

Abstract: An authentication system includes: a main terminal; one or more sub-terminals connected to the main terminal; and an authentication server connected to the main terminal. The authentication server authenticates whether the sub-terminal is a terminal for which communication permission is granted by exchanging authentication data with the sub-terminal via the main terminal.

Abstract: A password setting method for setting a same password used for connecting to a network by multiple video receiving apparatuses retaining unique information different from one another, to said multiple video receiving apparatuses includes: a password generation step in which a remote control apparatus for transmitting an operation signal with respect to said multiple video receiving apparatuses, or one video receiving apparatus among said multiple video receiving apparatuses generates said password based on said unique information retained by said one video receiving apparatus, and stores the password in a password storage unit provided in said remote control apparatus; and a password transmitting step in which said remote control apparatus transmits said stored password to any other video receiving apparatus.

Abstract: Television viewing can be performed at a video receiving device which receives an authentication, even if the power of a video receiving device which performs the authentication is turned off by a video data receiving system in which video receiving devices are connected to one another via a network for authentication, each of the video receiving devices having: an authentication unit which has an authentication function; and an authentication privilege management unit which manages an authentication privilege for enabling the authentication function, wherein the authentication unit of the video receiving device having an authentication privilege can permit other video receiving devices to receive the external video data, and when the power of the video receiving device having the authentication privilege is turned off, the power of the video receiving device is turned off after the authentication privilege management unit of the video receiving device has delegated the authentication privilege to other vi