Abstract:
A wireless power transmission unit according to the present invention transmits power wirelessly from a power transmitting section 100 to a power receiving section 200 through a resonant magnetic field. The unit includes: the power transmitting section 100, which resonates at a resonant frequency f0; at least one relay section 300, which can resonate at a frequency that is selected from multiple frequencies including the resonant frequency f0; and a resonance control section 600 that outputs information that specifies a resonance condition to be imposed on the relay section 300 according to the arrangement of the power receiving section 200 and that makes the relay section 300 resonate on the resonance condition that has been specified in accordance with that information.
Abstract:
A power generator according to the present invention includes: a power generating section (101) for outputting DC energy; an oscillator (103) for converting the DC energy into RF energy having a frequency f0; a first antenna (107) for transmitting the RF energy; a second antenna, which receives, by coupling a resonant magnetic field, at least a part of the RF energy transmitted by the first antenna (107); and an output converting section (120) for converting the RF energy supplied from the second antenna (109) into AC energy having a lower frequency than the RF energy. If the oscillator (103) has a voltage step-up ratio Voc, the output converting section (120) has a voltage step-up ratio Vtr, the first inductor (107a) of the first antenna (107) has an inductance L1, the second inductor (109a) of the second antenna (109) has an inductance L2, and the first and second antennas (107, 109) have a coupling coefficient k, the power generator satisfies (L2/L1)≧(k/(Voc×Vtr))2.
Abstract:
A power generation system includes power generating modules, and a module fixing device configured to fix the power generating modules. Each power generating module includes a power generating module body including a power generator that generates DC energy, and a power transmitter attached to the power generating module body. The power transmitter includes an oscillator that converts the DC energy into RF energy with a frequency f0, and a power transmitting antenna that transmits the RF energy as a resonant magnetic field. The module fixing device includes a first fixing member configured to fix the power generating modules, power receiving antennas each of which receives at least a part of the RF energy transmitted by the corresponding power transmitting antenna, and a second fixing member configured to fix the power receiving antennas. The respective outputs of the power receiving antennas are combined in parallel by the combining section.
Abstract:
A power generation system includes power generating modules, and a module fixing device configured to fix the power generating modules. Each power generating module includes a power generating module body including a power generator that generates DC energy, and a power transmitter attached to the power generating module body. The power transmitter includes an oscillator that converts the DC energy into RF energy with a frequency f0, and a power transmitting antenna that transmits the RF energy as a resonant magnetic field. The module fixing device includes a first fixing member configured to fix the power generating modules, power receiving antennas each of which receives at least a part of the RF energy transmitted by the corresponding power transmitting antenna, and a second fixing member configured to fix the power receiving antennas. The respective outputs of the power receiving antennas are combined in parallel by the combining section.
Abstract:
According to one embodiment, a semiconductor memory device includes a plurality of cell array blocks and a control circuit. The control circuit sets a selected bit line to have 0 volt, applies a first electric potential which is higher than 0 volt to a selected word line, applies a second electric potential which is higher than 0 volt and lower than the first electric potential to non-selected word lines other than the selected word line, applies a third electric potential which is 0 volt or more and lower than the second electric potential to a non-selected bit line adjacent to the selected bit line in an adjacent cell array block, applies the second electric potential to non-selected bit lines other than the non-selected bit line to which the third electric potential is applied, and changes a resistance status of the resistance variable film of the selected memory cell.
Abstract:
There is provided a method of inducing differentiation of bone marrow stromal cells to neural cells or skeletal muscle cells by introduction of a Notch gene. Specifically, the invention provides a method of inducing differentiation of bone marrow stromal cells to neural cells or skeletal muscle cells in vitro, which method comprises introducing a Notch gene and/or a Notch signaling related gene into the cells, wherein the finally obtained differentiated cells are the result of cell division of the bone marrow stromal cells into which the Notch gene and/or Notch signaling related gene have been introduced. The invention also provides a method of inducing further differentiation of the differentiation-induced neural cells to dopaminergic neurons or acetylcholinergic neurons. The invention yet further provides a treatment method for neurodegenerative and skeletal muscle degenerative diseases which employs neural precursor cells, neural cells or skeletal muscle cells produced by the method of the invention.
Abstract:
A portable information processing apparatus includes a replay processing unit that replays content data, a synchronous display unit that selects a piece of associated information corresponding to a replayed portion of the content data, and instructs to display the associated information thus selected, and an output controlling unit that displays the associated information that is selected by the synchronous display unit in an associated information display area arranged in a display unit. The synchronous display unit selects the associated information other than the one corresponding to the replayed portion and instructs the output controlling unit to display the information, upon accepting an operation requesting to display associated information other than the one corresponding to the replayed portion.
Abstract:
According to one embodiment, a semiconductor memory device includes a semiconductor substrate, a plurality of memory cells, a plurality of wires, and a control circuit. The control circuit allows a first current to change a state to flow on a selected cell by applying a first potential difference between a pair of wires that sandwich the selected cell selected from the plurality of memory cells with respect to the semiconductor substrate vertically, and allows a second current lower than the first current to flow on an non-selected cell in the same direction as the direction of the first current by applying a second potential difference between a pair of wires that sandwich the non-selected cell connected to a wire shared with the selected cell on a different layer from the selected cell.
Abstract:
A power generator includes an impedance matching section for oscillating section that is arranged between the oscillating section and the power-transmitting antenna, and configured to match an input impedance of the power-transmitting antenna to an output impedance of the oscillating section, and a transmitting-end control section configured to match an input impedance of the oscillating section to an output impedance of the power generating section by changing the input impedance of the oscillating section in accordance with a variation in the output impedance of the power generating section, and configured to match an input impedance of the impedance matching section for oscillating section to the output impedance of the oscillating section by changing the input impedance of the impedance matching section for oscillating section in accordance with the variation in the output impedance of the power generating section.
Abstract:
To stabilize the transmission characteristic of an electric power supply system for vehicle even when the vehicle being charged and powered by it shifts horizontally, a power transmitting antenna, which is arranged on the ground, and a power receiving antenna, which is arranged at the bottom of the vehicle, set up resonances at substantially the same resonant frequency and produce magnetic resonant coupling between them. When the power receiving antenna enters the zone in which the power transmitting antenna is located, power is transmitted to the vehicle. By setting the width of the power receiving antenna as measured in the vehicle's width direction to be larger than the length of the power receiving antenna as measured in the vehicle's traveling direction, the transmission characteristic can be stabilized.