WIRELESS CHARGER
9 Assignments
0 Petitions
Accused Products
Abstract
The invention relates to decreasing power consumption of wireless charging devices in standby condition. A method for decreasing power consumption comprises feeding at least one detecting signal as a pulse to a wireless charging coil (120) of a power transmitter (100) comprising a charging area, wherein the detecting signal corresponds with an expected resonance frequency of the wireless charging coil (120) measuring a reflected signal caused by feeding the detecting signal, determining whether the reflected signal satisfies a non-resonance condition and activating a power transmitting circuit in response to determining that the reflected signal satisfies the non-resonance condition. The invention further relates to an apparatus and a computer program product.
23 Citations
35 Claims
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1-18. -18. (canceled)
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19. A method, comprising:
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feeding at least one detecting signal to a wireless charging coil of a power transmitter comprising a charging area, wherein the detecting signal corresponds with an expected resonance frequency of the wireless charging coil; measuring a reflected signal caused by feeding the detecting signal; determining whether the reflected signal satisfies a non-resonance condition; and activating a power transmitting circuit in response to determining that the reflected signal satisfies the non-resonance condition. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26)
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27. An apparatus comprising at least a wireless charging coil configured to transmit inductive energy by inductive coupling and further comprising:
- a charging area, a resonance detection circuitry configured to detect resonance of the wireless charging coil, a controller circuit and a power transmitting circuit configured to transmit power to the wireless charging coil, wherein the resonance detection circuitry is configured to feed at least one detecting signal to the wireless charging coil, wherein the detecting signal corresponds with an expected resonance frequency of the wireless charging coil, the control circuit configured to measure a reflected signal caused by feeding the detecting signal, to determine whether the reflected signal satisfies a non-resonance condition, and to activate the power transmitting circuit in response to determining that the reflected signal satisfies the non-resonance condition.
- View Dependent Claims (28, 29, 30, 31, 32, 33, 34)
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35. A computer program product embodied on a non-transitory computer readable medium, comprising computer program code configured to, when executed on at least one processor, cause an apparatus to:
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feed at least one detecting signal to a wireless charging coil of a power transmitter comprising a charging area, wherein the detecting signal corresponds with an expected resonance frequency of the wireless charging coil; measure a reflected signal caused by feeding the detecting signal; determine whether the reflected signal satisfies a non-resonance condition; and activate a power transmitting circuit in response to determining that the reflected signal satisfies the non-resonance condition.
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Specification