Abstract: Present invention provides an optical communication system that controls reception sensitivity of an optical receiver. The communication system (100) according to the present invention comprising: an optical transmitter (1) to which an transmission signal is input, and which modulates the transmission signal to an optical signal and transmits the optical signal; and an optical receiver (2) that receives the optical signal and demodulates the optical signal to an transmission signal.

Abstract: A radio communication unit performs communication using a first frequency band or a second frequency band. A control unit allows a connection to an access point in the first frequency band when a signal level of a received signal of the first frequency band which is received from the access point exceeds a first threshold. When the connection to the access point in the first frequency band is established and when the signal level exceeds a second threshold greater than the first threshold, the control unit starts a search for an access point in the second frequency band.

Abstract: A communication system includes a terminal apparatus, an information providing apparatus outputting content data, a wireless communication relay apparatus relaying communication between the terminal apparatus and the information providing apparatus, a wireless apparatus coupled to the terminal apparatus, and a reception apparatus coupled to the information providing apparatus and the wireless apparatus, wherein the terminal apparatus transmits attribute information to the information providing apparatus, the information providing apparatus transmits identification information to the terminal apparatus, the terminal apparatus transmits the identification information to the wireless apparatus, the wireless apparatus transmits the identification information to the reception apparatus, the reception apparatus transmits the identification information to the information providing apparatus, and the information providing apparatus outputs the content data.

Abstract: A mobile communication device includes a wireless communication interface and a processor. The wireless communication interface runs a first scan for searching for one or more access points. The processor determines whether, by the first scan, a plurality of access points with the same identification information have been detected on different channels. Based on results of the determination, the processor alters the method of a second scan to be run after a connection to an access point.

Abstract: Present invention provides an optical communication system that controls reception sensitivity of an optical receiver. The communication system (100) according to the present invention comprising: an optical transmitter (1) to which an transmission signal is input, and which modulates the transmission signal to an optical signal and transmits the optical signal; and an optical receiver (2) that receives the optical signal and demodulates the optical signal to an transmission signal.

Abstract: A mobile terminal apparatus includes first communications circuitry that connects to a network through an access point; a storage device storing connection history information that includes entries associating area identification information that identifies a communication area of a base station to which second communications circuitry connects, network identification information that identifies the network, and access point identification information that identifies an access point that connected to the network in the communication area; and a processor that when in a communication area of a first base station identified by first area identification information, the first communications circuitry is connected to a first network identified by first network identification information, determines whether an entry that includes the first area identification information and the first network identification information together with different access point identification information has been retrieved from the conn

Abstract: A wireless communication interface measures a signal level of a received signal from an access point. A control unit calculates connection time with the access point to which a mobile communication device is connected. The control unit associates a first connection threshold or a second connection threshold that is larger than the first connection threshold with the access point on the basis of the connection time. After calculating the connection time, when the mobile communication device is not connected to the access point, the control unit determines whether to connect the mobile communication device to the access point on the basis of a comparison between the signal level and the first connection threshold or the second connection threshold associated with the access point.

Abstract: Provided is a transmission circuit with which it is possible to facilitate error correction of burst errors without increasing the processing load in multiframes configured from a plurality of OTN frame signals. This transmission circuit is provided with: a transmission-side signal recognition unit for detecting MFAS and recognizing the order of N number of OTN frame signals; an intra-multiframe sequence conversion unit for converting the sequence of data signals inside the multiframe in response to the recognized order; a transmission-side rearranging unit for consolidating the sequentially converted data signals into lengths equal to those of the OTN frame signals and creating N number of quasi-OTN frame signals; and a transmission unit for transmitting the multiframes configured from the N number of quasi-OTN frame signals.

Abstract: A communication apparatus executes a determination process that includes measuring an intensity of a first radio wave received from a first relay in accordance with a first wireless communication method, receiving, from the first relay, an entering notification having an intensity range in which the communication apparatus under a certain situation is to receive the first radio wave from the first relay apparatus, and deciding that communication is possible with a second relay in accordance with a second wireless communication method when the measured intensity of the first radio wave from the first relay indicates a value within the intensity range indicated by the notification, and executes an initiation process that includes starting, when the processor decides that communication is possible with the second relay, detection of a second radio wave from the second relay.

Abstract: A mobile terminal device, when detecting that a display state of a screen transitions from non-display to display, starts a scanning operation of searching for an access point. If an access point of the same access point identification information is found successively a given number of times N, the mobile terminal device suspends the scanning operation of searching for an access point. If movement of the mobile terminal device is detected subsequent to suspending the scanning operation of searching for the access point, the mobile terminal device resumes the scanning operation for the access point.

Abstract: A communication system includes: a first relay device; a transmitter; and a mobile terminal. The first relay device communicates via a first wireless communication scheme. The transmitter forms a signal reachable range set such that the signal reachable range coincides with a possible communication range of the first relay device, via a third wireless communication scheme, and broadcasts a signal including identification information. The mobile terminal includes: a first communication circuit configured to connect with the first relay device via the first wireless communication scheme; a third communication circuit configured to receive a signal including the identification information used by the transmitter via the third wireless communication scheme; and a control circuit configured to instruct the first communication circuit to start operation, when the signal including the identification information used by the transmitter is received via the third wireless communication scheme.

Abstract: A compound useful for the manufacture of a Group 5 metal oxide film is provided. The compound is a Group 5 metal oxo-alkoxo complex represented by the following formula (A), and after preparing a film-forming material solution containing the compound and an organic solvent, a Group 5 metal oxide film can be manufactured using the film-forming material solution: M?(?4-O)?(?3-O)?(?-O)?(?-ORA)?(ORA)?(RAOH)?X?Y???(A) (wherein M represents a niobium atom, etc.; RA represents an alkyl group; X represents an alkylenedioxy group; Y represents a carboxy group, etc.; ? represents an integer of 3 to 10; ? represents 0 or 1; ? represents an integer of 0 to 8; ? represents an integer of 2 to 9; ? represents an integer of 0 to 6; ? represents an integer of 6 to 16; ? represents an integer of 0 to 4; ? represents an integer of 0 to 2; and ? represents an integer of 0 to 6).

Abstract: A communication system includes a terminal apparatus, an information providing apparatus outputting content data, a wireless communication relay apparatus relaying communication between the terminal apparatus and the information providing apparatus, a wireless apparatus coupled to the terminal apparatus, and a reception apparatus coupled to the information providing apparatus and the wireless apparatus, wherein the terminal apparatus transmits attribute information to the information providing apparatus, the information providing apparatus transmits identification information to the terminal apparatus, the terminal apparatus transmits the identification information to the wireless apparatus, the wireless apparatus transmits the identification information to the reception apparatus, the reception apparatus transmits the identification information to the information providing apparatus, and the information providing apparatus outputs the content data.

Abstract: A first radio communication interface performs communication over a first radio communication network. A second radio communication interface executes a first scan to detect an access point of a second radio communication network and measure a signal level of reception signals received from the detected access point. When the signal level calculated in the first scan is smaller than or equal to a first threshold, but exceeds a second threshold, a processor causes the second radio communication interface to execute a second scan that specifies an identifier of the detected access point so as to restrict scanning to a smaller range of access points than the first scan. When a signal level calculated in the second scan for the detected access point exceeds the first threshold, the processor switches a path of the communication from the first radio communication network to the second radio communication network.

Abstract: A mobile terminal device includes a processor that connects to a base station; connects to a network through an access point; and detects transition from a non-display state to a display state; and a storage device that stores connection history information correlating area identification information identifying a communication area of the base station, and access point identification information identifying an access point through which connection to the network has been made in the communication area. The processor, when detecting the transition in a communication area of a first base station, starts searching for an access point in the communication area of the first base station after a predetermined period elapses, and determines whether an entry including first area identification information of the first base station is retrieved from the connection history information; and after the predetermined period elapses, performs control to connect to the network, based on a determination result.

Abstract: A mobile communication device includes a wireless communication interface and a processor. The wireless communication interface runs a first scan for searching for one or more access points. The processor determines whether, by the first scan, a plurality of access points with the same identification information have been detected on different channels. Based on results of the determination, the processor alters the method of a second scan to be run after a connection to an access point.

Abstract: A mobile terminal apparatus includes a first communications circuitry configured to communicate with a base station; a second communications circuitry configured to connect to a network through an access point; a storage device configured to store therein access point information correlated to identification information of a communications area of the base station and indicating whether the access point is a specified access point; and a control circuitry configured to start or maintain a search for the specified access point, when based on the access point information, the mobile terminal apparatus is present in the communications area of the base station and the communications area has the specified access point.

Abstract: An information terminal apparatus includes a memory and a processor. The memory stores information indicating a front operating system. The processor runs a first virtual machine that executes a first operating system. The processor runs a second virtual machine that executes a second operating system. The processor controls user interface of the information terminal apparatus by executing the front operating system. The processor detects, by referring to the information stored in the memory, that the front operating system is changed from the first operating system to the second operating system. The processor notifies, upon the detection, the first virtual machine of a first notification indicating that the user interface stops. The processor notifies, upon the detection, the second virtual machine of a second notification indicating that the user interface restarts.

Abstract: Present invention provides an optical communication system that controls reception sensitivity of an optical receiver. The communication system (100) according to the present invention comprising: an optical transmitter (1) to which an transmission signal is input, and which modulates the transmission signal to an optical signal and transmits the optical signal; and an optical receiver (2) that receives the optical signal and demodulates the optical signal to an transmission signal.

Abstract: A wireless communication interface measures a signal level of a received signal from an access point. A control unit calculates connection time with the access point to which a mobile communication device is connected. The control unit associates a first connection threshold or a second connection threshold that is larger than the first connection threshold with the access point on the basis of the connection time. After calculating the connection time, when the mobile communication device is not connected to the access point, the control unit determines whether to connect the mobile communication device to the access point on the basis of a comparison between the signal level and the first connection threshold or the second connection threshold associated with the access point.