Apparatus and method for determining whether a power receiver is removed from the apparatus
AssigneeSamsung Electronics Co., Ltd.
InventorsKyung-Woo Lee, Kang-Ho Byun, Se-Ho Park
Life of this patent
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Abstract
A method and apparatus are provided for determining, by a wireless power transmitter, whether a wireless power receiver is removed from a wireless power network managed by the wireless power transmitter. The method includes transmitting a command signal to report power information of the wireless power receiver at stated periods; determining whether a report signal corresponding to the command signal is received from the wireless power receiver; and determining that the wireless power receiver is removed from the wireless power network, if the report signal is not received after transmitting the command signal a predetermined number of times at the stated periods.
Claims9
A method for controlling a wireless power transmitter, the method comprising:
- applying a first power for a wireless power receiver;
- detecting an error condition while applying the first power;
- after detecting the error condition, periodically applying a second power for detecting load variation;
- and
- detecting the load variation indicating that the wireless power receiver is removed from the wireless power transmitter by a user while applying the second power.
A wireless power transmitter comprising:
- a power transmitter;
- and
- a controller configured to:
- control to apply a first power to the power transmitter,
- detect an error condition while applying the first power,
- after detecting the error condition, control to periodically apply a second power for detecting load variation of the power transmitter, and
- detect the load variation indicating that a wireless power receiver is removed from the wireless power transmitter by a user while applying the second power.
Dependencies are inferred from the claim text.