30-05-2013 дата публикации
Номер: US20130134931A1
To reduce power consumption when a mobile device is not set down, and to reliably detect when a mobile device has been set down so that problems can be prevented such as overheating when a conductive object such as a coil is set down. A mobile device is set down on a power supply platform power is transmitted from a power transmission coil of the power supply platform to a power receiving coil of the mobile device and the power is supplied to the mobile device The power supply platform temporarily supplies alternating current power to the power transmission coil for a predetermined period, detection signals such as the current of the power transmission coil are detected while alternating current power is being supplied to the power transmission coil ID signals transmitted from a mobile device are detected when a set down mobile device has been detected based on the level of the detection signals, alternating current power is supplied from the power transmission coil to the power receiving coil and the mobile device is powered up. 1142141. A mobile device and a power supply platform comprising: a mobile device () incorporating a power receiving coil () inducing transmitted alternating current using a magnetic induction effect , and a power supply platform () for removably setting down the mobile device () and transmitting power to the power receiving coil () of the mobile device ();{'b': 1', '7', '2, 'the mobile device () comprising: a transmission circuit () for transmitting a prerecorded ID signal to the power supply platform (); and'}{'b': 2', '8', '1', '5', '8', '4', '1', '10', '5', '9', '10', '11', '1', '12', '5', '10', '5', '1, 'the power supply platform () comprising: a case () having a platform section for detachably arranging the mobile device (), a power transmission coil () installed in the case () and electromagnetically coupled to the power receiving coil () in the mobile device () set down on the platform section, an alternating current power source () ...
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