WIRELESS BATTERY CHARGER FOR MOBILE DEVICES AND METHOD THEREOF
First Claim
1. A wireless direct contact charger for a portable device having a first electrode and a second electrode provided on one surface of a housing of the portable device, the wireless direct contact charger comprising:
- a voltage supply;
a first plate electrode and a second plate electrode;
a polarity detection circuit that detects, when the first electrode or the second electrode of the portable device is placed on the first plate electrode or the second plate electrode, whether the first electrode of the portable device is in contact with the first plate electrode or the second electrode of the portable device is in contact with the first plate electrode; and
a switching circuit which connects the first plate electrode and the second plate electrode to the voltage supply according to a polarity consistent with the detection by the polarity detection circuit, wherein the first plate electrode and the second plate electrode each have linear dimensions less than the distance between the first electrode and the second electrode of the portable device.
1 Assignment
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Accused Products
Abstract
A wireless direct contact charger includes (a) a voltage supply; (b) a first plate electrode and a second plate electrode; (c) a polarity detection circuit that detects; and (d) a switching circuit. When the first electrode or the second electrode of the portable device is placed on the first plate electrode or the second plate electrode, the polarity detection circuit detects the polarity of the portable device charging terminals (i.e, whether the first electrode of the portable device is in contact with the first plate electrode, the second electrode of the portable device is in contact with the first plate electrode or any other suitable orientations). Based on the detected polarity, the switching circuit connects the first plate electrode and the second plate electrode to the voltage supply to provide an output voltage to the portable device for charging its battery,
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Citations
17 Claims
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1. A wireless direct contact charger for a portable device having a first electrode and a second electrode provided on one surface of a housing of the portable device, the wireless direct contact charger comprising:
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a voltage supply; a first plate electrode and a second plate electrode; a polarity detection circuit that detects, when the first electrode or the second electrode of the portable device is placed on the first plate electrode or the second plate electrode, whether the first electrode of the portable device is in contact with the first plate electrode or the second electrode of the portable device is in contact with the first plate electrode; and a switching circuit which connects the first plate electrode and the second plate electrode to the voltage supply according to a polarity consistent with the detection by the polarity detection circuit, wherein the first plate electrode and the second plate electrode each have linear dimensions less than the distance between the first electrode and the second electrode of the portable device. - View Dependent Claims (2, 3, 4)
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- 5. A back cover for a portable device, the portable device having a charging subsystem that charges a battery powering the portable device, the back cover being provided to allow charging of the portable device by a wireless direct contact charger having a first plate electrode and a second plate electrode, the back cover comprising a first electrode and a second electrode embedded in the back cover each being electrically connected to the charging subsystem of the portable device, wherein the distance between the first electrode and the second electrode of the portable device is greater than each of the linear dimensions of the first plate electrode and the second plate electrode.
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16. A method for charging a portable device having a first electrode and a second electrode provided on one surface of a housing of the portable device, wherein the wireless direct contact charger comprises:
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a voltage supply; a first plate electrode and a second plate electrode; a polarity detection circuit that detects, when the first electrode or the second electrode of the portable device is placed on the first plate electrode or the second plate electrode, whether the first electrode of the portable device is in contact with the first plate electrode or the second electrode of the portable device is in contact with the first plate electrode; and a switching circuit which connects the first plate electrode and the second plate electrode to the voltage supply according to a polarity consistent with the detection by the polarity detection circuit, wherein the first plate electrode and the second plate electrode each have linear dimensions less than the distance between the first electrode and the second electrode of the portable device; and
wherein the method comprises;(a) determining if the portable device is properly placed on either one or both of the first plate electrode and the second plate electrode; (b) if the electronic device is properly placed on either or both of the first plate electrode and the second plate electrode, sending an electrical stimulus signal and measuring a response to determine a polarity of the first plate electrode and the second plate electrode of the portable device; (c) setting the switching circuit to an appropriate configuration to provide an output voltage to the first plate electrode and the second plate electrode; and (d) outputting a charging voltage to the first plate electrode and the second plate electrode through the switching circuit. - View Dependent Claims (17)
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Specification