UNIFIED INDUCTIVE DIGITAL PROTOCOL
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United States of America Patent
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Issued Date -
Jul 6, 2017
app pub date -
May 8, 2015
filing date -
May 8, 2014
priority date (Note) -
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Abstract
A wireless power receiver, configured to inductively receive power from a wireless power outlet for powering a load, and to encode a signal for detection by the wireless power outlet, is provided. The wireless power receiver comprising a receiver circuit having a secondary coil connected to the load and configured to receive power from a primary coil associated with the wireless power outlet, and a resonance adjuster electrically connected to the secondary coil and configured to adjust the resonant frequency of the receiver circuit, between one of two resonant frequencies, by selectively modifying the receiver circuit. The wireless power receiver further comprises a controller configured to operate the resonance adjuster to encode the signal by adjusting the resonant frequency of the receiver circuit, wherein the signal comprises a plurality of data blocks carrying information, alternating with a plurality of power blocks each carrying a power instruction.
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