WIRELESS POWER TRANSMISSION SYSTEM, AND METHOD AND APPARATUS FOR ALLOCATING COMMUNICATION CHANNEL AND TRANSMITTING POWER IN WIRELESS POWER TRANSMISSION SYSTEM
First Claim
1. A method of allocating a communication channel and transmitting a power in a wireless power transmission system, the method comprising:
- selecting a controlling communication channel to be used for performing communication with a target device configured to wirelessly receive a power from a source device when the target device is detected;
transmitting, to the target device, an initial control signal comprising an identifier (ID) of the source device and a channel fix command through the selected controlling communication channel;
receiving, from the target device, a signal in response to the channel fix command;
allocating a controlling ID to the target device; and
entering a charging mode in which a charging power to be used for charging is transmitted from the source device to the target device;
wherein the channel fix command comprises a command requesting the target device to use the selected controlling communication channel; and
the charging power is transmitted from the source device to the target device through a magnetic coupling between the source device and the target device.
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Accused Products
Abstract
A wireless power transmission system, and a method and an apparatus for allocating a communication channel and transmitting a power in the wireless power transmission system. If a target device configured to wirelessly receive power from a source device is detected, a controlling communication channel to be used for performing communication with the target device is selected. An initial control signal including an identifier (ID) of the source device and a channel fix command are transmitted to the target device through the selected controlling communication channel. The channel fix command includes a command requesting the target device to use the selected controlling communication channel. A charging power is transmitted from the source device to the target device through a magnetic coupling between the source device and the target device.
285 Citations
22 Claims
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1. A method of allocating a communication channel and transmitting a power in a wireless power transmission system, the method comprising:
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selecting a controlling communication channel to be used for performing communication with a target device configured to wirelessly receive a power from a source device when the target device is detected; transmitting, to the target device, an initial control signal comprising an identifier (ID) of the source device and a channel fix command through the selected controlling communication channel; receiving, from the target device, a signal in response to the channel fix command; allocating a controlling ID to the target device; and entering a charging mode in which a charging power to be used for charging is transmitted from the source device to the target device; wherein the channel fix command comprises a command requesting the target device to use the selected controlling communication channel; and the charging power is transmitted from the source device to the target device through a magnetic coupling between the source device and the target device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of allocating a communication channel and transmitting a power in a wireless power transmission system, the method comprising:
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receiving, in a target device, a wake-up power that is used to activate a communication and control function of the target device from a source device; activating a communication module of the target device using the received wake-up power; selecting a first communication channel from N communication channels, N being an integer greater than or equal to 2; determining whether the first communication channel is in use; determining whether an initial control signal comprising a channel fix command is received from the source device if the first communication channel is in use; transmitting, to the source device, a signal in response to the channel fix command if the initial control signal is received from the source device; and receiving, from the source device, a charging power to be used for charging the target device; wherein the charging power is transmitted from the source device to the target device through a magnetic coupling between the source device and the target device. - View Dependent Claims (10, 11, 12)
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13. A source device of a wireless power transmission system, the source device comprising:
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a power converter configured to generate a wake-up power or a charging power by converting a direct current (DC) voltage to an alternating current (AC) voltage using a resonant frequency; a source resonator configured to transmit, to a target device, the generated wake-up power or the generated charging power through a magnetic coupling between the source device and the target device; and a control and communication (control/communication) unit configured to; search for an available controlling communication channel based on detection of a carrier signal; select a controlling communication channel to be used for performing communication with the target device based on a result of the searching for the available controlling communication channel; and transmit, to the target device, an initial control signal comprising an identifier (ID) of the source device and a channel fix command through the selected controlling communication channel. - View Dependent Claims (14)
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15. A target device of a wireless power transmission system, the target device comprising:
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a target resonator configured to receive, from a source device, a wake-up power that is used to activate a communication and control function of the target device, or a charging power to be used for charging the target device, through a magnetic coupling between the source device and the target device; and a control and communication (control/communication) unit configured to; be activated by the wake-up power; select a first communication channel from N communication channels, N being an integer greater than or equal to 2; determine whether a carrier signal is detected through the first communication channel; determines whether an initial control signal comprising a channel fix command is received from the source device if a carrier signal is detected through the first communication channel; and transmit, to the source device, a signal in response to the channel fix command if the initial control signal is received from the source device. - View Dependent Claims (16)
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17. A method of allocating a communication channel and transmitting a power in a source device of a wireless power transmission system, the method comprising:
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detecting a target device configured to wirelessly receive a power from the source device though a magnetic coupling between the source device and the target device; selecting a controlling communication channel to be used for performing communication with the target device; transmitting a channel fix command requesting the target device to use the controlling communication channel to communicate with the source device to the target device through the controlling communication channel; determining whether an acknowledgement has been received from the target device in response to the channel fix command; if an acknowledgement has been received from the target device in response to the channel fix command, allocating a controlling ID to the target device; and if a controlling ID has been allocated to the target device, initiating a charging mode of the source device and transmitting a charging power to operate the target device or charge an energy storage element of the target device from the source device to the target device through the magnetic coupling between the source device and the target device. - View Dependent Claims (18, 19, 20, 21, 22)
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Specification