Patent application number | Description | Published |
20110235800 | WIRELESS POWER SUPPLY APPARATUS - A wireless power supply apparatus generates an electric signal frequency-modulated or otherwise phase-modulated according to a transmission-side code that is determined beforehand with a wireless power reception apparatus. The electric signal thus generated is transmitted via a transmission coil so as to generate an electric power signal including any one of an electric field, a magnetic field, and an electromagnetic field. The wireless power reception apparatus receives the electric power signal using a reception coil. A control unit changes the impedance of a resonance circuit that comprises the reception coil and a resonance capacitor, according to a reception-side code that is to correspond to the transmission-side code. | 09-29-2011 |
20110241674 | Sample Tube and Measurement Method for Solid-State NMR - A solid-state NMR sample tube and method of using same which can be spun stably and at high speed while suppressing its bending resonance. A solid sample to be investigated by solid-state NMR spectroscopy can be sealed in the sample tube. The sample tube includes a hollow cylinder having opposite ends. At least one of the ends is open. The sample tube has a length L, an outside diameter D, and an inside diameter d which satisfy a given relationship disclosed herein. | 10-06-2011 |
20110285211 | WIRELESS POWER SUPPLY SYSTEM - A wireless power receiving apparatus comprises a bridge circuit and a control unit configured to control the bridge circuit. A wireless power supply apparatus transmits, to the wireless power receiving apparatus, an electric power signal and a control signal which indicates a control timing for the bridge circuit. A receiver receives the control signal transmitted from the wireless power supply apparatus. A control unit controls the bridge circuit according to the control signal. | 11-24-2011 |
20110316347 | WIRELESS POWER RECEIVING APPARATUS - A wireless power receiving apparatus receives an electric power signal including any one of an electric field, magnetic field, or electromagnetic field, transmitted from a wireless power supply apparatus. A resonance capacitor is arranged together with a reception coil to form a resonance circuit. A switch is provided in order to switch the state between a first state in which the load circuit is connected in series with the resonance circuit including the reception coil and the resonance capacitor and a second state in which the load circuit is disconnected from the resonance circuit. A control unit controls the switch so as to alternately switch the state between the first state and the second state in a time sharing manner. | 12-29-2011 |
20120056486 | WIRELESS POWER RECEIVING APPARATUS - In a wireless power supply system, a first capacitor is arranged in series with an antenna. A second capacitor and a switch are arranged in series on a path arranged in parallel with the first capacitor. A control unit adjusts the duty ratio of the switch according to the frequency of an electric power signal. | 03-08-2012 |
20120068548 | WIRELESS POWER SUPPLY APPARATUS - A wireless power supply apparatus transmits an electric power signal including any one of an electric field, a magnetic field, and an electromagnetic field. A bridge circuit includes multiple switches. A control unit performs switching control of the multiple switches of the bridge circuit at a first frequency configured as a transmission frequency. A transmission coil and a resonance capacitor form a resonance antenna, which is connected to the bridge circuit. The resonance frequency of the resonance antenna thus formed is a second frequency that is equal to or higher than the first frequency. A control unit is configured to be capable of adjusting the length of the dead time during which the multiple switches are all turned off at the same time. | 03-22-2012 |
20120228955 | TRANSMISSION COIL FOR WIRELESS POWER TRANSMISSION - A transmission coil is mounted in a wireless power supply apparatus, and is configured to transmit an electric power signal including any one from among an electric field, a magnetic field, and an electromagnetic field. The transmission coil includes a loop coil and a magnetic member. The magnetic member is configured to cover a particular portion of the loop coil. For example, the loop coil may be configured to have a shape in which a first side and a second side are substantially in parallel with each other. The magnetic member may be configured to cover the first side of the loop coil. | 09-13-2012 |
20120267961 | WIRELESS POWER SUPPLY APPARATUS - A resonance circuit includes a transmission coil and a resonance capacitor connected in series. A multi-tone power supply is capable of selecting arbitrary frequency components from among multiple discrete frequency components, and outputs, to the resonance circuit, a multi-tone signal obtained by superimposing sine wave signals of the respective frequency components thus selected. In a measurement mode, a frequency control circuit sets all the frequency components for the multi-tone power supply, and selects at least one frequency component at which the electric power transmission efficiency is high in the state in which a multi-tone signal is generated by superimposing the sine wave signals of all the frequencies. In a power supply mode, the aforementioned at least one frequency component thus selected in the measurement mode is set for the multi-tone power supply. | 10-25-2012 |
20130307543 | NMR Sample Tube and NMR Spectrometer - An NMR sample tube is offered which can be spun at high speed stably. The NMR sample tube is adapted for use in solid-state NMR spectroscopy and includes a tubular member, spacers, and cover bodies. The spacers are disposed inside the tubular member. Each spacer has first and second surfaces located on opposite sides. The first surfaces of the spacers define a space filled up with a sample. The tubular member has openings which are closed off by the cover bodies. | 11-21-2013 |
20140091637 | WIRELESS POWER RECEIVER - An automatic tuning assist circuit is coupled with a transmission antenna. Multiple switches SW and a first auxiliary capacitor CA are arranged between a first terminal and a second terminal of the automatic tuning assist circuit. A first control unit is configured to switch on and off the multiple switches SW in synchronization with a driving voltage V | 04-03-2014 |
20140097843 | NMR Spinner - There is disclosed an NMR (nuclear magnetic resonance) spinner having a turbine structure and a rotor whose spinning rate can be increased. A vortical channel ( | 04-10-2014 |
20140132078 | WIRELESS POWER TRANSMITTER - A wireless power supply apparatus includes a resonance circuit and a multi-tone power supply, and is configured to transmit an electric power signal comprising at least one from among an electric field, a magnetic field, and an electromagnetic field. The resonance circuit includes a transmission coil and a resonance capacitor connected in series. The multi-tone power supply is configured to generate a multi-tone signal by superimposing multiple sine wave signals having respective frequencies, and to output the multi-tone signal thus generated to the resonance circuit. | 05-15-2014 |
20140152119 | RELAY DEVICE OF WIRELESS POWER TRANSMISSION SYSTEM - A relay antenna includes a power relay coil. An automatic tuning assist circuit is coupled with the relay antenna. The automatic tuning assist circuit has first and second terminals coupled with the relay antenna. Multiple switches are arranged together with N (N represents an integer) auxiliary capacitors between the first terminal and the second terminal. A controller is configured to switch on and off each of the multiple switches in synchronization with an electric power signal transmitted from a wireless power supply apparatus. | 06-05-2014 |
20140175894 | WIRELESS POWER TRANSMITTER AND WIRELESS POWER RECEIVER - An automatic tuning assist circuit is coupled in series with a transmission antenna. A first switch and a second switch are arranged in series between a first terminal and a second terminal of the automatic tuning assist circuit. Furthermore, a third switch and a fourth switch are arranged in series between the first terminal and the second terminal. A first auxiliary capacitor is arranged between a connection node that connects the first switch and the second switch and a connection node that connects the third switch and the fourth switch. A first control unit switches on and off the first switch through the fourth switch with the same frequency as that of the driving voltage, and with a given phase difference with respect to the driving voltage. | 06-26-2014 |
20140183971 | WIRELESS POWER TRANSMITTER AND WIRELESS POWER RECEIVER - An automatic tuning assist circuit is coupled with a transmission antenna. The transmission antenna injects a first correction current into, or otherwise draws the first correction current from, the transmission antenna. In the first state, the first auxiliary coil is coupled with the transmission antenna. In this state, the first correction current I | 07-03-2014 |
20140183972 | WIRELESS POWER TRANSMITTER AND WIRELESS POWER RECEIVER - An automatic tuning assist circuit is coupled with a transmission antenna. The automatic tuning assist circuit injects a correction current into, or otherwise draws the correction current from, the transmission antenna. An H-bridge circuit is arranged between a first terminal and a second terminal coupled with the transmission antenna. The H-bridge circuit is switched on and off with a frequency that is equal to the frequency of a driving voltage. A third auxiliary coil is arranged between the output terminals of the H-bridge circuit. | 07-03-2014 |
20140361636 | WIRELESS POWER RECEIVING APPARATUS - A wireless power transmitting apparatus transmits an electric power signal comprising any one from among an electric field, a magnetic field, and an electromagnetic field to a wireless power receiving apparatus. A transmission antenna includes a transmission coil. An automatic tuning assist circuit is coupled in series with the transmission antenna. A power supply applies an AC driving voltage across both terminals of a series circuit that comprises the transmission antenna and the automatic tuning assist circuit. A first controller switches on and off multiple switches in synchronization with the driving voltage. A voltage monitoring unit monitors the voltage that develops at an auxiliary capacitor. | 12-11-2014 |
20150015087 | WIRELESS POWER TRANSMITTING APPARATUS AND WIRELESS POWER SUPPLY SYSTEM - A wireless power transmitting apparatus transmits an electric power signal comprising any one from among an electric field, a magnetic field, and an electromagnetic field to a wireless power receiving apparatus. A reflector coil is arranged at a distance from a radiation coil. A driving power supply supplies a driving current to the radiation coil. A first phase control circuit controls the phase of the current that flows through the reflector coil so as to stabilize, to a predetermined value, the phase difference between the current that flows through the reflector coil and the current that flows through the radiation coil. | 01-15-2015 |
20150028891 | IMPEDANCE MEASUREMENT APPARATUS - A measurement auxiliary circuit is configured to form a resonance circuit together with a detection target. An ATAC is coupled with the resonance circuit. A signal generator applies an AC probe signal V | 01-29-2015 |