Method and power transmitter for controlling power transmission

    公开(公告)号:US10340726B2

    公开(公告)日:2019-07-02

    申请号:US15824383

    申请日:2017-11-28

    Abstract: Methods and apparatuses are provided for controlling power transmission in a power transmitter. A first message including a first voltage and a second voltage that is greater than the first voltage, is received from at least one power receiver. Power is transmitted to the at least one power receiver. A second message including a third voltage measured at the at least one power receiver during power transmission from the power transmitter, is received from the at least one power receiver. An amount of the power is adjusted based on whether the third voltage is between the first voltage and the second voltage. The first voltage is a minimum voltage for the at least one power receiver.

    Wireless power transmitter, wireless power receiver, and control methods thereof

    公开(公告)号:US10090697B2

    公开(公告)日:2018-10-02

    申请号:US15643184

    申请日:2017-07-06

    Abstract: A wireless power transmitter configured to transmit a wireless power to a wireless power receiver and a method for controlling the wireless power transmitted from the wireless power transmitter are provided. The method includes applying a detection power for detecting a change in a load impedance of the wireless power transmitter caused by a placement of the wireless power receiver, detecting the change in the load impedance of the wireless power transmitter, receiving a first signal from the wireless power receiver, determining whether a reception intensity of the first signal is greater than a threshold, and transmitting a second signal to the wireless power receiver based on detecting the change in the load impedance and determining whether the reception intensity of the first signal is greater than the threshold.

    Method and apparatus for recognizing characters

    公开(公告)号:US10089557B2

    公开(公告)日:2018-10-02

    申请号:US14969832

    申请日:2015-12-15

    Abstract: A method and an apparatus for recognizing characters using an image are provided. A camera is activated according to a character recognition request and a preview mode is set for displaying an image photographed through the camera in real time. An auto focus of the camera is controlled and an image having a predetermined level of clarity is obtained for character recognition from the images obtained in the preview mode. The image for character recognition is character-recognition-processed so as to extract recognition result data. A final recognition character row is drawn that excludes non-character data from the recognition result data. A first word is combined including at least one character of the final recognition character row and a predetermined maximum number of characters. A dictionary database that stores dictionary information on various languages using the first word is searched, so as to provide the user with the corresponding word.

    METHOD AND APPARATUS FOR PROVIDING WIRELESS CHARGING POWER TO A WIRELESS POWER RECEIVER

    公开(公告)号:US20180226844A1

    公开(公告)日:2018-08-09

    申请号:US15945378

    申请日:2018-04-04

    Abstract: A control method of a wireless power transmitter and a wireless power transmitter. The method includes transmitting a first power with a first cycle; transmitting a second power with a second cycle, wherein the second cycle is greater than the first cycle; when a wireless power receiver is placed within a charging area and is detected by the first power, upon detecting the wireless power receiver by the first power, transmitting a third power to drive the wireless power receiver to transmit a search signal to the wireless power transmitter; and when the wireless power receiver is placed within the charging area and is not detected by the first power, using the second power to detect the wireless power receiver and drive the wireless power receiver to transmit the search signal to the wireless power transmitter.

    Wireless power transmitter, wireless power receiver, and control methods thereof

    公开(公告)号:US09722446B2

    公开(公告)日:2017-08-01

    申请号:US14223147

    申请日:2014-03-24

    CPC classification number: H02J7/007 H02J7/025 H02J50/12 H02J50/40 H02J50/80

    Abstract: A control method of a wireless power transmitting unit transmitting charging power to a wireless power receiving unit is provided. The control method includes receiving first signals from one or more wireless power receiving units; classifying wireless power receiving units to be communicated with from among the one or more wireless power receiving units based on reception intensities of the received first signals; transmitting wireless transmission power with predetermined level; receiving second signals including voltage information of the classified wireless power receiving units from the classified wireless power receiving units; and communicating with one or more wireless power receiving unit among the classified wireless power receiving units based on the wireless transmission power and the voltage information of the second signals.

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