APPARATUS FOR DETECTING SIGNAL AND WIRELESS POWER TRANSMITTING APPARATUS HAVING THE SAME
First Claim
1. A signal detecting apparatus comprising:
- a magnetic field change signal detecting unit configured to detect a magnetic field change signal of a power transmitting coil generated according to a transmission signal transmitted by a power receiving apparatus; and
a signal extracting unit configured to extract the transmission signal transmitted by the power receiving apparatus from the magnetic field change signal detected by the magnetic field change signal detecting unit.
2 Assignments
0 Petitions
Accused Products
Abstract
Disclosed herein are a signal detecting apparatus and a wireless power transmitting apparatus having the same. In the signal detecting apparatus, a resonance tank circuit is resonated by a magnetic field change of a power transmitting coil generated according to a signal transmitted to the wireless power transmitting apparatus by a power receiving apparatus to generate a resonance signal, and a signal extracting unit extracts the signal transmitted by the power receiving apparatus in the generated resonance signal. The resonance tank circuit includes a radio frequency identification (RFID) transponder detecting the magnetic field change signal of the power transmitting coil, and a capacitor connected in parallel with the RFID transponder to be resonated by the magnetic field change of the power transmitting coil. The signal transmitted to the wireless power transmitting apparatus by the power receiving apparatus may be accurately detected by a simple circuit configuration.
61 Citations
16 Claims
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1. A signal detecting apparatus comprising:
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a magnetic field change signal detecting unit configured to detect a magnetic field change signal of a power transmitting coil generated according to a transmission signal transmitted by a power receiving apparatus; and a signal extracting unit configured to extract the transmission signal transmitted by the power receiving apparatus from the magnetic field change signal detected by the magnetic field change signal detecting unit. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A wireless power transmitting apparatus comprising:
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a power transmitting coil configured to wirelessly transmit a power to a power receiving apparatus; a signal detecting apparatus configured to use a magnetic field change signal of the power transmitting coil to detect a transmission signal transmitted by the power receiving apparatus; a power transmitting controlling unit configured to control the wireless transmission of power to the power receiving apparatus, and to use the transmission signal detected by the signal detecting apparatus to determine a charged state of the power receiving apparatus; a driving driver configured to generate a driving signal under the control of the power transmitting controlling unit; and a series resonant converter configured to switch a direct current (DC) power according to the driving signal and output the switched power to the power transmitting coil. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification