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AssigneeApple Inc.
InventorsKunal BHARGAVA, Fady MISHRIKI, Saining REN, Daniel ROBERTSON, Nigel James GRAY, Rex HUANG
Estimating the term…
In an inductively coupled power transmitter a force detector that detects the presence of a potential device by monitoring forces applied to a surface of the power transmitter and activates the inductively coupled power transmitter upon detection of a potential device. An inductively coupled power transmitter having a proximity detector that detects the presence and location of a potential device by monitoring the proximity of devices to a surface of the power transmitter and activates the inductively coupled power transmitter upon detection of a potential device. The transmitter preferably has one or more detection coils each having an area much greater than that of the transmitter coils for detecting the presence of a potential device. An inductively coupled power transmitter including a plurality of transmitter coils proximate a charging surface and a controller selecting and driving a combination of transmitter coils providing the coupling between the power transmitter and a power receiver meeting a selection criteria.
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In an inductively coupled power transfer system including an inductively coupled power transmitter having a plurality of transmitter coils proximate a charging surface and a device including an inductively coupled power receiver positioned on the charging surface, a method of selectively energising selected transmitter coils comprising selecting a plurality of transmitter coil combinations and selecting the combination providing the coupling between the power transmitter and the power receiver meeting a selection criteria.
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An inductively coupled power transmitter for an inductively coupled power transfer system including a plurality of transmitter coils proximate a charging surface and a controller for selectively driving and monitoring the transmitter coils wherein the controller selectively energises a plurality of combinations of transmitter coils and monitors the coupling between the power transmitter and a power receiver and during power transfer drives the combination of transmitter coils that has the coupling with the power receiver meeting a selection criteria.
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Dependencies are inferred from the claim text.