Integrated inductive charging in protective cover
First Claim
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1. A method operable by a portable electronic device having a housing that includes a back-side having a radio frequency (RF) transmissive portion, the housing arranged to carry a first magnetic element, a battery, an inductive power receiver, and a display assembly having a touch sensitive display that occupies substantially all of a front-side of the housing, the method comprising:
- in a presence of a charging device having a body (i) that is characterized as having a size and shape in accordance with the RF transmissive portion and (ii) that carries a second magnetic element and an inductive power transmitter that is coiled in accordance with a shape of the RF transmissive portion;
creating a magnetic circuit between the first and second magnetic elements, wherein the magnetic circuit aligns and secures the body to the housing of the portable electronic device; and
receiving an operable amount of power from the inductive power transmitter by the inductive power receiver in accordance with a current battery state,wherein the magnetic circuit is of sufficient strength such that, when the portable electronic device moves, the portable electronic device carries along the magnetically secured charging device while maintaining an inductive connection between the inductive power transmitter and the inductive power receiver.
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Abstract
Accurate and reliable techniques for wirelessly powering a tablet device are disclosed.
25 Citations
20 Claims
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1. A method operable by a portable electronic device having a housing that includes a back-side having a radio frequency (RF) transmissive portion, the housing arranged to carry a first magnetic element, a battery, an inductive power receiver, and a display assembly having a touch sensitive display that occupies substantially all of a front-side of the housing, the method comprising:
in a presence of a charging device having a body (i) that is characterized as having a size and shape in accordance with the RF transmissive portion and (ii) that carries a second magnetic element and an inductive power transmitter that is coiled in accordance with a shape of the RF transmissive portion; creating a magnetic circuit between the first and second magnetic elements, wherein the magnetic circuit aligns and secures the body to the housing of the portable electronic device; and receiving an operable amount of power from the inductive power transmitter by the inductive power receiver in accordance with a current battery state, wherein the magnetic circuit is of sufficient strength such that, when the portable electronic device moves, the portable electronic device carries along the magnetically secured charging device while maintaining an inductive connection between the inductive power transmitter and the inductive power receiver. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A portable electronic device, comprising:
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a housing arranged to carry a display, a battery, a first magnetic element and an inductive power receiver, the housing having a back-side having a radio frequency (RF) transmissive portion, wherein in a presence of a charging device having a body (i) that is characterized as having a size and a shape in accordance with the RF transmissive portion and (ii) that carries a second magnetic element and an inductive power transmitter, the portable electronic device is capable of coupling with the charging device such that; a magnetic circuit is created between the first and second magnetic elements, the magnetic circuit secures the body to the housing of the portable electronic device;
the inductive power receiver receives an operable amount of power from the inductive power transmitter in accordance with a current battery state; and
the magnetic circuit is of sufficient strength such that, when the portable electronic device moves, the portable electronic device carries along the magnetically secured charging device while maintaining an inductive connection between the inductive power transmitter and the inductive power receiver. - View Dependent Claims (8, 9, 10, 11)
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12. An accessory device arranged to inductively provide power to a portable electronic device having a housing carrying a display, a battery, a first magnetic element, and an inductive power receiver unit, the housing having a back-side having a radio frequency (RF) transmissive portion, the accessory device comprising:
a body characterized as having a size and a shape in accordance with the RF transmissive portion, the body carrying; (i) an inductive power transmitter arranged to inductively pass an operable amount of power in accordance with a current battery state of the battery to the portable electronic device by inductive coupling with the inductive power receiver unit, wherein the inductive power transmitter is coiled in accordance with a shape of the RF transmissive portion, and (ii) a second magnetic element used to secure the body to the portable electronic device, wherein the second magnetic element is of sufficient strength such that, when the second magnetic element is coupled to the first magnetic element and when the portable electronic device moves, the portable electronic device carries along the magnetically secured accessory device while maintaining an inductive connection between the inductive power transmitter and the inductive power receiver unit. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
Specification