Abstract: A communication apparatus performs a communication using a communication frame corresponding to a predetermined frequency bandwidth including a first frequency bandwidth and a second frequency bandwidth. The communication frame includes a first communication channel that corresponds to the first frequency bandwidth and that has a plurality of subcarriers and a second communication channel that corresponds to the second frequency bandwidth and that has a plurality of subcarriers. The communication apparatus sets a first phase vector with respect to the first communication channel, sets a second phase vector with respect to the second communication channel, generates communication data by adjusting a phase of symbol data using the first phase vector and the second phase vector, and transmits the communication data using the communication frame.

Abstract: A communication apparatus that performs a communication with another communication apparatus using a frequency bandwidth including a plurality of communication channels and includes a processor and a communicating device. The communicating device transmits a signal to the another communication apparatus using a first number of communication channels included in the frequency bandwidth, and receives a response to the signal from the another communication apparatus using the first number of communication channels. The processor changes the number of communication channels used in the communication with the another communication apparatus, from the first number to a second number, in accordance with the response to the signal, and controls power for each of the communication channels used in the communication with the another communication apparatus based on the second number.

Abstract: A communication apparatus performs a communication using a communication frame corresponding to a predetermined frequency bandwidth including a first frequency bandwidth and a second frequency bandwidth. The communication frame includes a first communication channel that corresponds to the first frequency bandwidth and that has a plurality of subcarriers and a second communication channel that corresponds to the second frequency bandwidth and that has a plurality of subcarriers. The communication apparatus sets a first phase vector with respect to the first communication channel, sets a second phase vector with respect to the second communication channel, generates communication data by adjusting a phase of symbol data using the first phase vector and the second phase vector, and transmits the communication data using the communication frame.

Abstract: Disclosed is a direct current power line communication apparatus, by which communication between electronic apparatuses with a direct current voltage line there between can be stabilized. The direct current power line communication apparatus, i.e., a direct current power line communication apparatus that transmits signals using the direct current voltage line (15a), is provided with: a PLC communication control unit (29), which controls the transmitting unit (27) connected to the direct current voltage line (15a); and a voltage detecting unit (30), which detects the voltage of the direct current voltage line (15a), and notifies the PLC communication control unit (29) of the detected voltage. The PLC communication control unit (29) transmits information, including the voltage information, to other direct current power line communication apparatus via the transmitting unit (27).

Abstract: Disclosed is a charging apparatus whereby charging can be suitably performed even in the cases where a plurality of electric vehicles are connected to a charging station. The charging apparatus has: a charging cable (4), which is configured of a power supply line (6) that charges an electric vehicle (2) and a pilot line (8) that detects connection of the electric vehicle (2); a power supply unit (10), which supplies power to the charging cable (4); a voltage detecting unit (11), which detects, via a pilot line (8), a voltage pattern that corresponds to identifying information of the electric vehicle (2); and a power line communication unit (12), which performs, with the electric vehicle (2), data communication in the state wherein the identifying information of the electric vehicle (2) is added, said identifying information having been acquired by means of the voltage detecting unit (11).

Abstract: Provided are a power supply device and a power supply method which can carry out proper charging even when a plurality of electric automobiles are connected to a charging stand. A charging stand (1) supplies power to electric automobiles (2, 3) by way of the charging cables (4, 5). The charging stand (1) is provided with: a charging cable identification signal transmitter (9) for transmitting a charging cable identification signal to the electric automobiles by way of the charging cables (4, 5); an electric automobile identification signal receiver (10) for receiving an electric automobile identification signal and a charging cable identification signal from the electric automobiles (2, 3) by way of the charging cables (4, 5); and a controller (11) for charging the electric automobiles (2, 3) when the electric automobile identification signal receiver (10) receives the electric automobile identification signal and the charging cable identification signal.

Abstract: A communication apparatus communicates with another communication apparatus. The communication apparatus includes a first communication unit configured to receive serial data from a first communication apparatus that is serially connected to the communication apparatus; a modulation unit configured to modulate the serial data received by the first communication unit into data other than the serial data to generate transmission data; and a second communication unit configured to perform first unicast transmission which involves transmitting the transmission data by designating a second communication apparatus as a transmission destination and second unicast transmission which involves transmitting the transmission data by designating a third communication apparatus as a transmission destination.

Abstract: There is provided a power supply apparatus capable of supplying information as a power line communication signal superimposed on a voltage of a commercial frequency, although currents of the commercial frequency are not supplied to power receiving side external equipment, and capable of supplying power to a specific external apparatus together with the power line communication signal, by controlling supply of the currents of the commercial frequency to the external apparatus.

Abstract: Disclosed is a charging apparatus whereby charging can be suitably performed even in the cases where a plurality of electric vehicles are connected to a charging station. The charging apparatus has: a charging cable (4), which is configured of a power supply line (6) that charges an electric vehicle (2) and a pilot line (8) that detects connection of the electric vehicle (2); a power supply unit (10), which supplies power to the charging cable (4); a voltage detecting unit (11), which detects, via a pilot line (8), a voltage pattern that corresponds to identifying information of the electric vehicle (2); and a power line communication unit (12), which performs, with the electric vehicle (2), data communication in the state wherein the identifying information of the electric vehicle (2) is added, said identifying information having been acquired by means of the voltage detecting unit (11).

Abstract: A power generation control device is electrically connected to a photovoltaic panel for controlling an output voltage of the photovoltaic panel. The power generation control device includes a scanning unit, configured to perform a scanning process in which the output voltage of the photovoltaic panel is sequentially changed in a predetermined voltage range. The predetermined voltage range is changed in accordance with the photovoltaic panel.

Abstract: A voltage conversion apparatus converts a voltage of an electricity generator. The voltage conversion apparatus includes a maximum power tracking portion that is adapted to output a voltage which is output by the electricity generator to an external device at a predetermined ratio such that an operation point of the electricity generator tracks an optimal operation point at which power of the electricity generator reaches a maximum level, and a voltage output portion that is adapted to output a voltage which is output by the electricity generator to the external device when the maximum power tracking portion is not being operated normally.

Abstract: Provided are a power supply device and a power supply method which can carry out proper charging even when a plurality of electric automobiles are connected to a charging stand. A charging stand (1) supplies power to electric automobiles (2, 3) by way of the charging cables (4, 5). The charging stand (1) is provided with: a charging cable identification signal transmitter (9) for transmitting a charging cable identification signal to the electric automobiles by way of the charging cables (4, 5); an electric automobile identification signal receiver (10) for receiving an electric automobile identification signal and a charging cable identification signal from the electric automobiles (2, 3) by way of the charging cables (4, 5); and a controller (11) for charging the electric automobiles (2, 3) when the electric automobile identification signal receiver (10) receives the electric automobile identification signal and the charging cable identification signal.

Abstract: A communication apparatus communicates with another communication apparatus. The communication apparatus includes a first communication unit configured to receive serial data from a first communication apparatus that is serially connected to the communication apparatus; a modulation unit configured to modulate the serial data received by the first communication unit into data other than the serial data to generate transmission data; and a second communication unit configured to perform first unicast transmission which involves transmitting the transmission data by designating a second communication apparatus as a transmission destination and second unicast transmission which involves transmitting the transmission data by designating a third communication apparatus as a transmission destination.

Abstract: Disclosed are a power source device and a vehicle having increased reliability as backup in the event of a power cut, even when the power of the vehicle is used during a power cut. A power source device (3) transmits by way of power cable (5) control information for controlling a vehicle (6) in the event of a power cut. The vehicle (6) supplies power for an accumulator (10) to the power source device (3) by way of the power cable (5) in accordance with the control information received, and reports to the power source device (3) information regarding the remaining charge of the accumulator (10). Furthermore, the power source device (3) supplies power from the accumulator (10) to each electrical appliance within a residence (2). A display device (9) displays information regarding the remaining charge of the accumulator (10).

Abstract: Disclosed is a direct current power line communication apparatus, by which communication between electronic apparatuses with a direct current voltage line there between can be stabilized. The direct current power line communication apparatus, i.e., a direct current power line communication apparatus that transmits signals using the direct current voltage line (15a), is provided with: a PLC communication control unit (29), which controls the transmitting unit (27) connected to the direct current voltage line (15a); and a voltage detecting unit (30), which detects the voltage of the direct current voltage line (15a), and notifies the PLC communication control unit (29) of the detected voltage. The PLC communication control unit (29) transmits information, including the voltage information, to other direct current power line communication apparatus via the transmitting unit (27).

Abstract: There is provided a power supply apparatus capable of supplying information as a power line communication signal superimposed on a voltage of a commercial frequency, although currents of the commercial frequency are not supplied to power receiving side external equipment, and capable of supplying power to a specific external apparatus together with the power line communication signal, by controlling supply of the currents of the commercial frequency to the external apparatus.

Abstract: Provided is a communication apparatus which prevents, when two or more communication systems share a single communication medium in a time-division manner, an occurrence of situation where only a particular communication system suffers an influence of noise synchronizing with an AC power supply cycle or a half cycle thereof. When the communication systems share a single communication medium 121 in a time-division manner, a communication control section 209 determines a coexistence communication period, which is cyclically allocated to the communication systems, to be N×M+A (N: arbitrary integer, M: half cycle of an AC power supply cycle, A: arbitrary offset value which is not an integral multiple of the half cycle of the AC power supply cycle). A synchronization signal transmission/reception section 212 transmits and receives a synchronization signal to and from a communication apparatus belonging to another communication system so as to synchronize with the communication apparatus.