About 151 results
https://drivepatents.com/patents/985816 · 6 Mar 2013
The circuit device has a power receiver (12) and a power transmitter (10) that has a driving device (14) for driving electronic switches (T1,T2) with drive signals. The power transmission side resonance circuit comprises a power transmission-side capacitor...
https://drivepatents.com/patents/985791 · 6 Mar 2013
Provided are a devices, systems and methods for performing communication using wireless power. According to one general aspect, a communication device using wireless power may include: a controller configured to control mutual resonance between a target re...
https://drivepatents.com/patents/992657 · 27 Feb 2013
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...
https://drivepatents.com/patents/993298 · 30 Jan 2013
A method for wireless power transmission includes obtaining, via a Q-value circuit, first and second voltages at respective first and second nodes of a resonance circuit. The first and second voltages are effective to determine if foreign matter is present...
https://drivepatents.com/patents/994659 · 26 Dec 2012
Provided are apparatuses, systems and methods for performing communication using wireless power. According to one general aspect, a communication device using wireless power may include: a controller configured to determine whether a mutual resonance occur...
https://drivepatents.com/patents/995342 · 5 Dec 2012
An inductive rotary joint system has a one phase rectifier for receiving a one phase AC input, generating a comparatively lower DC voltage, and a three phase rectifier for receiving a three phase input, generating a comparatively higher DC voltage. An AC p...
https://drivepatents.com/patents/996601 · 31 Oct 2012
Disclosed is a wireless power transmission apparatus (1) which is provided with: a first drive unit (101a) and a second drive unit (101b), which output alternating currents; a first phase shifter (102a) and a second phase shifter (102b), which control the ...
https://drivepatents.com/patents/996442 · 31 Oct 2012
This document discusses, among other things, a method for providing wireless power from a power providing device to a portable electronic device. The method includes generating a wireless power signal as a beam having a propagation path directed toward the...
https://drivepatents.com/patents/997009 · 24 Oct 2012
A wireless power transmission device comprises a power reception device 2 including a power reception coil 21 which receives the power transmitted from a power transmission device 1, a resonance circuit 22 connected to the power reception coil 21, a load c...
https://drivepatents.com/patents/996859 · 24 Oct 2012
To reduce the cost of a magnetic resonance power transmitter including a communication function. A magnetic resonance power transmitter (100) of a magnetic resonance wireless power transmission system (10) includes a resonance coil (110), an alternating cu...