MAGNETOMETER FOR ALIGNING A PORTABLE DEVICE ON A PLANAR CHARGING SURFACE OF AN INDUCTIVE CHARGING UNIT
First Claim
Patent Images
1. A method in a portable device comprising:
- receiving a magnetic direction signal from a magnetometer, the magnetic direction signal indicative of a portion of a magnetic charging field received the portable device; and
generating, based on the magnetic direction signal, a motion signal indicative of a movement of the portable device, the movement determined to increase the portion of the magnetic charging field received by the portable device.
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Abstract
A portable electronic uses a magnetometer to determine an alignment with an inductive charging unit magnetic charging field. The alignment increases a portion of the magnetic charging field generated by the inductive charging unit and received by the portable device to better power the device and reduce battery recharge times. The portable device displays motion icons to facilitate a manual alignment. The magnetometer may also be used for magnetic earthly field applications such as a compass, navigation and augmented reality.
94 Citations
15 Claims
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1. A method in a portable device comprising:
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receiving a magnetic direction signal from a magnetometer, the magnetic direction signal indicative of a portion of a magnetic charging field received the portable device; and generating, based on the magnetic direction signal, a motion signal indicative of a movement of the portable device, the movement determined to increase the portion of the magnetic charging field received by the portable device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A portable device comprising:
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a receiving coil for receiving a portion of a magnetic charging field; a magnetometer for generating a magnetic direction signal indicative of the magnetic charging field; and a controller for generating a motion signal based on the magnetic direction signal, the motion signal indicative of a movement of the portable device determined to increase the portion of the magnetic charging field received by the receiving coil. - View Dependent Claims (12, 13, 14)
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15. A non-transitory computer readable medium having a stored set of instructions that when executed cause an apparatus to:
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process a magnetic direction signal indicative of a portion of a magnetic charging field transmitted at a planar charging surface of an inductive charging unit and received at a planar receiving surface of a portable device, the planar receiving surface being proximate to the planar charging surface; generate a motion signal indicative of a manual movement of the portable device determined to increase the portion of the magnetic charging field received by the portable device based on the magnetic direction signal; and process the magnetic direction signal to determine a direction of a magnetic earthly field based on a determined absence of the magnetic charging field.
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Specification