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公开(公告)号：US10790881B2
公开(公告)日：2020-09-29
申请号：US15962453
申请日：2018-04-25
发明人： Youngjin Moon , Hyoungseok Oh , Sungwoo Lee
IPC分类号： G06K5/00 , H04B5/00 , G06K7/08 , G06K19/04 , G06K19/06 , G06Q20/32 , G06Q20/34 , G06Q20/36 , G06Q20/38
摘要： An electronic device may include a transmission circuit and an inductive element. The inductive element may be configured to generate a wireless communication signal based on a current. The transmission circuit may be configured to output the current based on a supply voltage; to increase an intensity of the current, from zero to an increased intensity that is less than or equal to a target value, by alternately repeating a first increase and a first decrease of the intensity of the current, in a first time interval; to decrease the intensity of the current, from the increased intensity to zero, by alternately repeating a second increase and a second decrease of the intensity of the current, in a second time interval.
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公开(公告)号：US11139861B2
公开(公告)日：2021-10-05
申请号：US17001013
申请日：2020-08-24
发明人： Youngjin Moon , Hyoungseok Oh , Sungwoo Lee
IPC分类号： G06K5/00 , H04B5/00 , G06K7/08 , G06K19/04 , G06K19/06 , G06Q20/32 , G06Q20/34 , G06Q20/36 , G06Q20/38
摘要： An electronic device may include a transmission circuit and an inductive element. The inductive element may be configured to generate a wireless communication signal based on a current. The transmission circuit may be configured to output the current based on a supply voltage; to increase an intensity of the current, from zero to an increased intensity that is less than or equal to a target value, by alternately repeating a first increase and a first decrease of the intensity of the current, in a first time interval; to decrease the intensity of the current, from the increased intensity to zero, by alternately repeating a second increase and a second decrease of the intensity of the current, in a second time interval.
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公开(公告)号：US10332101B2
公开(公告)日：2019-06-25
申请号：US15854162
申请日：2017-12-26
发明人： Sungwoo Lee , Youngjin Moon , Hyoungseok Oh
摘要： A magnetic secure transmission (MST) device which generates an MST signal includes a first transmitter, a first coil that generates a first signal depending on an operation of the first transmitter, a second transmitter that operates at an operating frequency of the first transmitter, and a second coil that generates a second signal for offsetting or compensating for the first signal depending on an operation of the second transmitter. The MST signal is generated as the first signal and the second signal overlap each other.
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公开(公告)号：US10734901B2
公开(公告)日：2020-08-04
申请号：US16028460
申请日：2018-07-06
发明人： Hyoungseok Oh , Youngjin Moon
摘要： An electronic device includes a transmitter circuit, an inductive element, and a boost converter. The transmitter circuit outputs a current, which has a varying level, based on a supply voltage. The inductive element generates an output signal based on the current, such that wireless communication with an external device is performed. The boost converter boosts a system voltage to output the supply voltage. A voltage level of the supply voltage provided from the boost converter to the transmitter circuit based on the boosted system voltage is maintained to be equal to or higher than a reference level which is higher than a voltage level of the system voltage, regardless of a decrease in the voltage level of the system voltage.
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公开(公告)号：US20190052315A1
公开(公告)日：2019-02-14
申请号：US15962453
申请日：2018-04-25
发明人： Youngjin Moon , Hyoungseok Oh , Sungwoo Lee
CPC分类号： H04B5/0056 , G06K7/084 , G06K19/042 , G06K19/06206 , G06Q20/322 , G06Q20/3278 , G06Q20/352 , G06Q20/36 , G06Q20/3829 , H04B5/0031 , H04B5/0075
摘要： An electronic device may include a transmission circuit and an inductive element. The inductive element may be configured to generate a wireless communication signal based on a current. The transmission circuit may be configured to output the current based on a supply voltage; to increase an intensity of the current, from zero to an increased intensity that is less than or equal to a target value, by alternately repeating a first increase and a first decrease of the intensity of the current, in a first time interval; to decrease the intensity of the current, from the increased intensity to zero, by alternately repeating a second increase and a second decrease of the intensity of the current, in a second time interval.
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6.发明申请公开(公告)号：US20180365681A1
公开(公告)日：2018-12-20
申请号：US15854162
申请日：2017-12-26
发明人： Sungwoo LEE , Youngjin Moon , Hyoungseok Oh
CPC分类号： G06Q20/341 , H01F1/34 , H01F38/14 , H01F2038/143 , H04B5/0056 , H04B5/0075
摘要： A magnetic secure transmission (MST) device which generates an MST signal includes a first transmitter, a first coil that generates a first signal depending on an operation of the first transmitter, a second transmitter that operates at an operating frequency of the first transmitter, and a second coil that generates a second signal for offsetting or compensating for the first signal depending on an operation of the second transmitter. The MST signal is generated as the first signal and the second signal overlap each other.
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