Alignment using signals from a secondary device before wireless power transfer
First Claim
1. An apparatus comprising:
- a ping detection module that detects a ping signal transmitted from a secondary pad to a primary pad, the secondary pad located on a mobile device, the primary pad located on a stationary wireless power transfer (“
WPT”
) device, the stationary WPT device transmitting power through the primary pad to the secondary pad of the mobile device during a wireless power transfer operation;
a signal strength module that determines a signal strength of the ping signal received at the primary pad; and
an alignment module that determines an amount of alignment of the secondary pad with respect to the primary pad based on the determined signal strength of the received ping signal.
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0 Petitions
Accused Products
Abstract
An apparatus includes a ping detection module that detects a ping signal transmitted from a secondary pad to a primary pad. The secondary pad is located on a mobile device and the primary pad is located on a stationary wireless power transfer (“WPT”) device. The stationary WPT device transmits power through the primary pad to the secondary pad of the mobile device during a wireless power transfer operation. The apparatus includes a signal strength module that determines a signal strength of the ping signal received at the primary pad, and an alignment module that determines an amount of alignment of the secondary pad with respect to the primary pad based on the determined signal strength of the received ping signal.
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Citations
27 Claims
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1. An apparatus comprising:
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a ping detection module that detects a ping signal transmitted from a secondary pad to a primary pad, the secondary pad located on a mobile device, the primary pad located on a stationary wireless power transfer (“
WPT”
) device, the stationary WPT device transmitting power through the primary pad to the secondary pad of the mobile device during a wireless power transfer operation;a signal strength module that determines a signal strength of the ping signal received at the primary pad; and an alignment module that determines an amount of alignment of the secondary pad with respect to the primary pad based on the determined signal strength of the received ping signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An apparatus comprising:
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a ping transmit module that transmits a ping signal from a secondary pad to a primary pad, the secondary pad located on a mobile device, the primary pad located on a stationary wireless power transfer (“
WPT”
) device, the stationary WPT device transmitting power through the primary pad to the secondary pad of the mobile device during a wireless power transfer operation; andan alignment confirmation module that receives an alignment confirmation that the secondary pad is aligned within the primary pad within a specified alignment tolerance, the alignment confirmation in response to determining, at the primary pad, a signal strength of the received ping signal, and determining that an amount of alignment of the secondary pad with respect to the primary pad based on the determined signal strength of the received ping signal is within the specified alignment tolerance. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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21. A method comprising:
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detecting a ping signal transmitted from a secondary pad to a primary pad, the secondary pad located on a mobile device, the primary pad located on a stationary wireless power transfer (“
WPT”
) device, the stationary WPT device transmitting power through the primary pad to the secondary pad of the mobile device during a wireless power transfer operation;determining a signal strength of the ping signal received at the primary pad; and determining an amount of alignment of the secondary pad with respect to the primary pad based on the determined signal strength of the received ping signal. - View Dependent Claims (22, 23, 24, 25)
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26. A method comprising:
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transmitting a ping signal from a secondary pad to a primary pad, the secondary pad located on a mobile device, the primary pad located on a stationary wireless power transfer (“
WPT”
) device, the stationary WPT device transmitting power through the primary pad to the secondary pad of the mobile device during a wireless power transfer operation; andreceiving an alignment confirmation that the secondary pad is aligned within the primary pad within a specified alignment tolerance, the alignment confirmation in response to determining, at the primary pad, a signal strength of the received ping signal, and determining that an amount of alignment of the secondary pad with respect to the primary pad based on the determined signal strength of the received ping signal is within the specified alignment tolerance. - View Dependent Claims (27)
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Specification