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公开(公告)号：US11165415B2
公开(公告)日：2021-11-02
申请号：US16858849
申请日：2020-04-27
发明人： Hankyu Lee
IPC分类号： H03K3/0231 , H03K3/011 , H03K3/354
摘要： A relaxation oscillator and a method of controlling the relaxation oscillator are disclosed. The relaxation oscillator includes a reference voltage generating circuit configured to generate a reference voltage based on a transistor-based resistor, a variable voltage generating circuit configured to generate a variable voltage based on the reference voltage and a control switch, a threshold voltage generating circuit configured to generate a threshold voltage using a switched-capacitor resistor circuit, and a switch control circuit configured to output a control signal to control the control switch based on the variable voltage and the threshold voltage.
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公开(公告)号：US11699920B2
公开(公告)日：2023-07-11
申请号：US17071122
申请日：2020-10-15
发明人： Hankyu Lee , Seungchul Jung
CPC分类号： H02J50/10 , H02J13/00026
摘要： A wireless power receiver and a wireless power reception method are disclosed. The wireless power receiver includes a charging element, a receiving coil configured to wirelessly receive power from a wireless power transmitter, a rectifier configured to convert an alternating current (AC) voltage generated from the receiving coil to a direct current (DC) voltage, and to output the DC voltage, a voltage converter configured to generate a charging current to charge the charging element, based on the DC voltage output from the rectifier, a current measurer configured to measure the charging current transferred to the charging element, and a controller configured to control a level of the charging current generated from the voltage converter based on a result of the measuring.
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公开(公告)号：US11515729B2
公开(公告)日：2022-11-29
申请号：US17181393
申请日：2021-02-22
发明人： Hankyu Lee , Sang Joon Kim
摘要： A wireless power relay apparatus includes: a first antenna configured to wirelessly receive an alternating current (AC) power signal of a first frequency from a wireless power transmission apparatus; a rectifier configured to convert the received AC power signal into a direct current (DC) power; a storage device configured to store electric energy of the DC power output from the rectifier; a power oscillator configured to generate an AC power signal of a second frequency based on an output current of the rectifier and electric energy of a DC voltage stored in the storage device; and a second antenna configured to transmit the AC power signal of the second frequency to a wireless power reception apparatus.
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公开(公告)号：US11848564B2
公开(公告)日：2023-12-19
申请号：US16657245
申请日：2019-10-18
发明人： Seungchul Jung , Sang Joon Kim , Hankyu Lee , Hyungwoo Lee
IPC分类号： H02M3/04 , H02J50/10 , H02J50/12 , A61B5/0538 , A61B5/00
CPC分类号： H02J50/10 , H02J50/12 , H02M3/04 , A61B5/0538 , A61B5/686
摘要： A converter and a circuit device including the converter are disclosed. The converter includes an inductor including a first end and a second end, and a switching circuit connected to the inductor. The switching circuit includes a first switch to control a connection between the first end and a battery connected to the converter, a second switch to control a connection between the second end and a current output end configured to output a current generated through the inductor from the battery, a third switch to control a connection between the second end and a voltage output end configured to output a voltage generated from the battery, and a fourth switch to control a connection between the second end and a voltage input end configured to receive a voltage to charge the battery.
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公开(公告)号：US11623101B2
公开(公告)日：2023-04-11
申请号：US16857416
申请日：2020-04-24
发明人： Junyeub Suh , Sang Joon Kim , Hankyu Lee
摘要： An implant system includes an implant device configured to generate a stimulation signal for a user using a power manager according to an operation mode based on biometric information of the user, and a wake-up device configured to switch the operation mode based on either one or both of an energy supply received through an external energy source different from the power manager and a result of counting a timer.
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6.发明授权公开(公告)号：US11831239B2
公开(公告)日：2023-11-28
申请号：US17873663
申请日：2022-07-26
发明人： Seong Joong Kim , Chisung Bae , Hankyu Lee
CPC分类号： H02M3/07 , H03L7/06 , G11C27/026
摘要： A current stimulator includes a first current generation circuit configured to generate a first current, injectable into a cranial nerve cell, through a current mirroring based on a plurality of transistor pairs; and a second current generation circuit, driven by a clock, configured to generate a second current smaller than the first current by controlling a charge rate based on a voltage difference between terminals of a capacitor. A first output impedance of the first current generation circuit and a second output impedance of the second current generation circuit have a magnitude greater than or equal to a predetermined ratio to a load impedance corresponding to the cranial nerve cell.
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公开(公告)号：US11509218B2
公开(公告)日：2022-11-22
申请号：US16377510
申请日：2019-04-08
发明人： Hankyu Lee
摘要： A wireless power receiver includes a rectifier configured to convert a radio frequency (RF) voltage signal generated based on an RF input to a direct current (DC) voltage, and a boost converter configured to generate a voltage for battery charging using the RF voltage signal as a switching signal.
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公开(公告)号：US10951068B2
公开(公告)日：2021-03-16
申请号：US16678351
申请日：2019-11-08
发明人： Jaechun Lee , Sang Joon Kim , Hankyu Lee , Seungchul Jung , Yeunhee Huh
摘要： A wireless power transmission system includes: a wireless power transmission apparatus including: a transmission coil configured to form mutual coupling with an auxiliary coil disposed outside of a living body; and a controller configured to control a supply of power by a power source to the transmission coil to wirelessly transmit the power from the transmission coil, using the auxiliary coil, to a wireless power reception apparatus disposed inside the living body through the mutual coupling, wherein a distance between the transmission coil and the auxiliary coil is adjustable.
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