Abstract: A reduction in breakdown voltage and mechanical deterioration of an electrode plate of a rechargeable battery are suppressed, and a charging time is shortened. There is provided a charger 10 which charges a rechargeable battery, comprising: a first output unit which outputs a first voltage; a second output unit which outputs a second voltage having a predetermined voltage value different from that of the first voltage; a charge control unit 16 which inputs the first voltage and the second voltage, alternately outputs these voltages, and supplies them to the rechargeable battery as charging voltages; a charged-amount detection unit 14 which measures a charged amount of the rechargeable battery; and an output control unit 15 which carries out control in such a manner that an output time of the first voltage and/or the second voltage in the charge control unit 15 is prolonged as the charged amount increases.

Abstract: A reduction in breakdown voltage and mechanical deterioration of an electrode plate of a rechargeable battery are suppressed, and a charging time is shortened. There is provided a charger 10 which charges a rechargeable battery, comprising: a first output unit which outputs a first voltage; a second output unit which outputs a second voltage having a predetermined voltage value different from that of the first voltage; a charge control unit 16 which inputs the first voltage and the second voltage, alternately outputs these voltages, and supplies them to the rechargeable battery as charging voltages; a charged-amount detection unit 14 which measures a charged amount of the rechargeable battery; and an output control unit 15 which carries out control in such a manner that an output time of the first voltage and/or the second voltage in the charge control unit 15 is prolonged as the charged amount increases.

Abstract: To enable control the number of revolutions of a wheel with a new structure different from an induction motor and adjust the maximum torque rapidly and accurately. A linear drive travel system includes a metal wheel 20 having a drum rotor and a stator 30 arranged inside the metal wheel 20. The stator 30 includes a plurality of rows of electromagnets 32 arranged in the direction of rotation axis, each row being formed of a plurality of electromagnets 32 arranged along the circumference around a rotary shaft 40. A drum rotor includes a plurality of arc-shaped rotor cores 23 arranged along the circumference around the rotary shaft 40. Control means (control system 80) performs control by allowing electromagnets 32 in some rows to be a magnetization coil of the rotor core and by allowing the electromagnets 32 in other rows to be a rotation coil of the drum motor.

Abstract: To reduce the time required for communication of a video image data, as well as to prevent deterioration of image quality caused by compression and decompression. A clock control means 20 which outputs a plurality of clocks which have different frequencies; a division means 510 which divides analogue data into a prescribed number; a clock attachment means (transmission block processing part 520) which attaches a clock of a different frequency to each of the divided analogue data; a digital converting means (A/D conversion part 530) which converts the analogue data to digital data, thereby to generate a plurality of digital signals; and a transmission means (transmission part 710) which transmits to the outside the plurality of digital signals as transmission signals are provided.

Abstract: To enable control the number of revolutions of a wheel with a new structure different from an induction motor and adjust the maximum torque rapidly and accurately. A linear drive travel system includes a metal wheel 20 having a drum rotor and a stator 30 arranged inside the metal wheel 20. The stator 30 includes a plurality of rows of electromagnets 32 arranged in the direction of rotation axis, each row being formed of a plurality of electromagnets 32 arranged along the circumference around a rotary shaft 40. A drum rotor includes a plurality of arc-shaped rotor cores 23 arranged along the circumference around the rotary shaft 40. Control means (control system 80) performs control by allowing electromagnets 32 in some rows to be a magnetization coil of the rotor core and by allowing the electromagnets 32 in other rows to be a rotation coil of the drum motor.

Abstract: A radio communication device includes: clock generation means (31A to 31D, 30) for generating a plurality of clocks; data signal generation means (204, 203) for inputting transmission signals of a plurality of types to be transmitted and generating a plurality of data signals including the plurality of types of transmission signals correlated to the transmission channel for use among transmission channels defined based on the plurality of clocks; multiplexing means (201) for multiplexing the plurality of data signals to generate a transmission signal; and signal transmission means (11) for radio-transmitting the transmission signal. In consequence, it is possible to provide a radio communication device and method capable of further improving the transmission efficiency of information with a simple structure.