Abstract: [Solving Means] A power storage system includes, for example, a plurality of power storage modules connected in parallel to a power line and a system voltage acquisition unit that obtains a system voltage in the power line. The power storage module includes a power storage section formed of one or more storage batteries and a current control unit that controls a current that flows between the power storage section and the power line. The current control unit controls, according to the system voltage and a voltage of the power storage section, the current that flows between the power storage section and the power line.

Abstract: A battery storage system includes: an energy converting unit configured to generate electrical power; a power converter including a control circuit, and a circuit that is controlled by the control circuit to generate electrical power to be supplied from an output of the energy converting unit to a load and electrical power to be supplied to the control circuit; a power supply source including a battery storage cell and a commercial power system; and a host control circuit configured to perform control such that electrical power is supplied from the power supply source to the control circuit when an output of the energy converting unit is between a first value and a second value larger than the first value.

Abstract: [Solving Means] A power storage system includes, for example, a plurality of power storage modules connected in parallel to a power line and a system voltage acquisition unit that obtains a system voltage in the power line. The power storage module includes a power storage section formed of one or more storage batteries and a current control unit that controls a current that flows between the power storage section and the power line. The current control unit controls, according to the system voltage and a voltage of the power storage section, the current that flows between the power storage section and the power line.

Abstract: An information processing apparatus is provided. The information processing apparatus includes a communication circuitry with an external apparatus in a noncontact manner by using a carrier of a predetermined frequency and charging an external battery in a noncontact manner; and a control circuitry configured to control a characteristic of at least one of communication and charging.

Abstract: A communication terminal includes: a communication section configured to perform non-contact communication with an external apparatus; an alarming section; and a control section configured to determine a communication state of the communication section with the external apparatus, and if the communication state is determined to be a communication error state, the control section configured to cause the alarming section to give an alarm prompting a user to change a relative position of the communication terminal with the external apparatus on the basis of communication data at the time of the communication error.

Abstract: A battery storage system includes: an energy converting unit configured to generate electrical power; a power converter including a control circuit, and a circuit that is controlled by the control circuit to generate electrical power to be supplied from an output of the energy converting unit to a load and electrical power to be supplied to the control circuit; a power supply source including a battery storage cell and a commercial power system; and a host control circuit configured to perform control such that electrical power is supplied from the power supply source to the control circuit when an output of the energy converting unit is between a first value and a second value larger than the first value.

Abstract: An information processing apparatus is provided. The information processing apparatus includes a communication circuitry with an external apparatus in a noncontact manner by using a carrier of a predetermined frequency and charging an external battery in a noncontact manner; and a control circuitry configured to control a characteristic of at least one of communication and charging.

Abstract: An information processing device is provided. The information processing device including a communication antenna having a variable Q value, for performing contactless-type communication with an external device by using a communication path capable of transmitting and receiving a signal using a carrier of a predetermined frequency, a communication speed determining unit for determining a communication speed in the communication with the external device, and a communication controlling unit for allowing the Q value of the communication antenna to be set to a value corresponding to a determined communication speed based on the communication speed determined in the communication speed determining unit.

Abstract: An information processing apparatus includes an antenna having a variable Q value, the antenna being used for performing communication with an external apparatus in a noncontact manner by using a carrier of a predetermined frequency and charging a battery in a noncontact manner by using the carrier, an obtaining unit configured to obtain information about charging of the battery, a determining unit configured to determine whether charging of the battery is to be performed or not on the basis of the information obtained by the obtaining unit, and a setting unit configured to selectively set the Q value of the antenna to a first value or a second value in accordance with a determination result generated by the determining unit, the second value being larger than the first value.

Abstract: An information processing apparatus includes an antenna having a variable Q value, the antenna being used for performing communication with an external apparatus in a noncontact manner by using a carrier of a predetermined frequency and charging a battery in a noncontact manner by using the carrier, an obtaining unit configured to obtain information about charging of the battery, a determining unit configured to determine whether charging of the battery is to be performed or not on the basis of the information obtained by the obtaining unit, and a setting unit configured to selectively set the Q value of the antenna to a first value or a second value in accordance with a determination result generated by the determining unit, the second value being larger than the first value.

Abstract: A communication terminal includes: a communication section configured to perform non-contact communication with an external apparatus; an alarming section; and a control section configured to determine a communication state of the communication section with the external apparatus, and if the communication state is determined to be a communication error state, the control section configured to cause the alarming section to give an alarm prompting a user to change a relative position of the communication terminal with the external apparatus on the basis of communication data at the time of the communication error.

Abstract: An information processing apparatus includes an antenna having a variable Q value, the antenna being used for performing communication with an external apparatus in a noncontact manner by using a carrier of a predetermined frequency and charging a battery in a noncontact manner by using the carrier, an obtaining unit configured to obtain information about charging of the battery, a determining unit configured to determine whether charging of the battery is to be performed or not on the basis of the information obtained by the obtaining unit, and a setting unit configured to selectively set the Q value of the antenna to a first value or a second value in accordance with a determination result generated by the determining unit, the second value being larger than the first value.

Abstract: An information processing device is provided. The information processing device including a communication antenna having a variable Q value, for performing contactless-type communication with an external device by using a communication path capable of transmitting and receiving a signal using a carrier of a predetermined frequency, a communication speed determining unit for determining a communication speed in the communication with the external device, and a communication controlling unit for allowing the Q value of the communication antenna to be set to a value corresponding to a determined communication speed based on the communication speed determined in the communication speed determining unit.

Abstract: A communication apparatus capable of controlling the power supply of an amplifier for amplifying the power of a carrier wave, maintaining the output level of the carrier wave constant by the open-close state of the communication apparatus, and performing stable communication is provided. It is judged that the communication apparatus is in an open state or in a closed state. If the communication apparatus is in the closed state, the power supply of a power amplifier (5) is controlled to the activated state. If the communication apparatus is in the open state, the power supply of the power amplifier (5) is controlled to the stopped state.

Abstract: A radio terminal includes a first case which includes an operation unit and a first antenna, and a second case which includes a display unit and a second antenna and which is foldably connected to the first case via a hinge. The radio terminal performs short-range radio communication with a predetermined communication device by using at least one of the first antenna and the second antenna.

Abstract: A radio terminal includes a first case which includes an operation unit and a first antenna, and a second case which includes a display unit and a second antenna and which is foldably connected to the first case via a hinge. The radio terminal performs short-range radio communication with a predetermined communication device by using at least one of the first antenna and the second antenna.