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公开(公告)号：US20180123473A1
公开(公告)日：2018-05-03
申请号：US15708775
申请日：2017-09-19
Applicant: Samsung Electro-Mechanics Co., Ltd.
Inventor： Youn Joong LEE , Koon Shik CHO , Ho Kwon YOON
CPC classification number: H02M7/219 , H02M1/08 , H02M1/088 , H02M2001/0048 , Y02B70/1491
Abstract: A bridge circuit includes: a first leg including a first switching device and a second switching device connected between a first node and a ground; a second leg including a third switching device and a fourth switching device connected between the first node and the ground; and a first charge recycler connected between a gate of the first switching device and a gate of the third switching device, and configured to transfer charges accumulated in the first switching device to the gate of the third switching device prior to turning on the third switching device.
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公开(公告)号：US20220057646A1
公开(公告)日：2022-02-24
申请号：US17166406
申请日：2021-02-03
Applicant: Samsung Electro-Mechanics Co., Ltd.
Inventor： Ji Hwan KIM , Koon Shik CHO , Youn Joong LEE
Abstract: An apparatus configured to reduce an offset of a Hall sensor includes a voltage-current conversion circuit and a current mirror circuit. The voltage-current conversion circuit is configured to generate a current configured to decrease when a voltage of an input terminal to which a bias current of a Hall sensor is input increases and increase when the voltage of the input terminal decreases. The current mirror circuit has a current mirror structure configured to feedback the bias current based on the current generated by the voltage-current conversion circuit.
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公开(公告)号：US20190154955A1
公开(公告)日：2019-05-23
申请号：US16035968
申请日：2018-07-16
Applicant: Samsung Electro-Mechanics Co., Ltd.
Inventor： Sung Man PANG , Youn Joong LEE , Ja Hwi CHO , Je Hyeon YU , Jin KIM
Abstract: An apparatus controlling a position of a camera module includes an operating coil disposed on a housing of the camera module to face a magnetic member disposed on a lens barrel of the camera module, a driving circuit providing a driving current to the operating coil, a capacitor circuit having a capacitor value to form a resonance circuit together with the operating coil to resonate at a resonance frequency varied depending on an inductance value of the operating coil; a resonance maintaining circuit maintaining a level of a resonance signal generated by the operating coil and the capacitor circuit, a resonance frequency detecting circuit detecting a resonance frequency signal from the resonance signal generated by the operating coil and the capacitor circuit, and a control circuit configured to control the driving circuit in response to the resonance frequency signal from the resonance frequency detecting circuit.
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公开(公告)号：US20200052621A1
公开(公告)日：2020-02-13
申请号：US16247855
申请日：2019-01-15
Applicant: Samsung Electro-Mechanics Co., Ltd.
Inventor： Je Hyeon YU , Youn Joong LEE , Sung Man PANG , Jin KIM , Koon Shik CHO
Abstract: A camera module includes a lens barrel configured to be movable; a detection target disposed on one side of the lens barrel; an integrated coil and a sensing coil facing the detection target and disposed in a direction perpendicular to a direction of movement of the lens barrel; a driver configured to apply a driving signal to the integrated coil; and a position detector configured to detect a position of the lens barrel according to an inductance of the integrated coil and an inductance of the sensing coil, wherein a width of the integrated coil in the direction perpendicular to the direction of movement of the lens barrel and a width of the sensing coil in the direction perpendicular to the direction of movement of the lens barrel change in the direction of movement of the lens barrel.
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公开(公告)号：US20190124265A1
公开(公告)日：2019-04-25
申请号：US16014285
申请日：2018-06-21
Applicant: Samsung Electro-Mechanics Co., Ltd.
Inventor： Youn Joong LEE , Sung Man PANG , Jin KIM , Sang Hyun MIN , Ja Hwi CHO , Koon Shik CHO , Je Hyeon YU , Ho Kwon YOON
Abstract: An actuator for a camera module includes two or more detectable elements, the detectable elements are respectively disposed on a first and second surface of a lens barrel, an oscillating element including a first oscillation circuit unit that includes two or more oscillation circuits facing the first surface of the lens barrel, and a second oscillation circuit unit that includes two or more oscillation circuits facing the second surface of the lens barrel, and a determining device that calculates a position of the lens barrel in response to oscillation signals output from the oscillating element. The determining device is configured to calculate the position of the lens barrel based on determined frequencies of oscillation signals of the first oscillation circuit unit and the second oscillation circuit unit.
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Patent Agency Ranking
公开(公告)号：US20240107158A1
公开(公告)日：2024-03-28
申请号：US18341992
申请日：2023-06-27
Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
Inventor： Youn Joong LEE
IPC: H04N23/60 , H04N25/709
CPC classification number: H04N23/665 , H04N25/709
Abstract: A camera module driving apparatus includes: a camera module driving IC including a communication port and a driving port; an interface to receive a communication signal through the communication port; and a driver to output a driving current through the driving port and including driving semiconductor circuit elements coupled in a bridge structure. The interface includes an inverter including a high-voltage terminal, a low-voltage terminal, and an input terminal and operating based on a voltage difference between the high-voltage terminal and the low-voltage terminal, and inverting at least a portion of the communication signal; and an input semiconductor circuit element passing current from the input terminal to the high-voltage terminal and cutting-off the current from the high-voltage terminal to the input terminal. The high-voltage terminal and the low-voltage terminal of the inverter are electrically connected to both ends of a capacitor, respectively.
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公开(公告)号：US20190289214A1
公开(公告)日：2019-09-19
申请号：US16170619
申请日：2018-10-25
Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
Inventor： Youn Joong LEE , Chang Seok LEE , Koon Shik CHO , Ho Kwon YOON
Abstract: An actuator of a camera module includes a driving coil disposed to face a detection target; a driving circuit including a plurality of transistors connected to the driving coil; and a processor configured to provide a respective gate control signal to a gate of each of the plurality of transistors, and detect a displacement of the detection target based on a component of an oscillation signal generated in a driving signal applied to the driving coil in response to an operation of any one of the plurality of transistors being switched by the respective gate control signal.
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公开(公告)号：US20130162144A1
公开(公告)日：2013-06-27
申请号：US13721365
申请日：2012-12-20
Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
Inventor： Youn Joong LEE , Deuk Hee Park , Sang Hyun Cha , Jae Shin Lee , Chang Seok Lee
IPC: H05B37/02
CPC classification number: H05B37/02 , H05B33/083
Abstract: Provided is an LED driving apparatus. The LED driving apparatus includes a plurality of LED groups each comprising one or more diodes, a switch group comprising a plurality of switch units connected respectively to the LED groups to drive the connected LED group when a control signal is activated, and a switch controlling unit configured to compare an input voltage of the LED groups with an output voltage of the LED groups, calculate a comparison value, and generate the control signal according to the comparison value. Accordingly, the LED driving apparatus drives the LED groups selectively according to the difference between the input voltage of the LED group and the output voltage of the LED group, thereby overcoming the problem of heat generation by forward voltage distribution.
Abstract translation: 提供了LED驱动装置。 LED驱动装置包括多个LED组，每个LED组包括一个或多个二极管，开关组包括分别连接到LED组的多个开关单元，以在控制信号被激活时驱动所连接的LED组;以及开关控制单元 配置为将LED组的输入电压与LED组的输出电压进行比较，计算比较值，并根据比较值生成控制信号。 因此，LED驱动装置根据LED组的输入电压和LED组的输出电压之间的差异选择性地驱动LED组，从而克服了通过正向电压分配发热的问题。
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公开(公告)号：US20220146852A1
公开(公告)日：2022-05-12
申请号：US17209567
申请日：2021-03-23
Applicant: Samsung Electro-Mechanics Co., Ltd.
Inventor： Je Hyeon YU , Ji Hwan KIM , Ja Hwi CHO , Youn Joong LEE , Young Bok YOON
Abstract: A tiltless OIS circuit includes a first signal processing unit generating a first direction-position detection signal and a tilt detection signal based on a first direction-first sensing signal and a first direction-second sensing signal, a control unit generating a first direction position control signal, a tilt control signal, and a second direction position control signal, based on the first direction-position detection signal, the tilt detection signal, and a second direction sensing signal, respectively, a second signal processing unit generating a first direction-first position control signal and a first direction-second position control signal based on the first direction position control signal and the tilt control signal, and a driving unit generating a first direction-first driving signal, a first direction-second driving signal, and a second direction driving signal, based on the first direction-first position control signal, the first direction-second position control signal, and the second direction position control signal, respectively.
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公开(公告)号：US20190324348A1
公开(公告)日：2019-10-24
申请号：US16353415
申请日：2019-03-14
Applicant: Samsung Electro-Mechanics Co., Ltd.
Inventor： Sung Man PANG , Youn Joong LEE , Je Hyeon YU , Kwang Mook LEE , Myeung Su KIM , Jin KIM
IPC: G03B5/02 , G02B27/64 , H02K41/035 , H02K11/225 , H02K11/40 , H04N5/232
Abstract: A camera module includes a lens barrel, a driving coil disposed to face a target detection unit prepared on one side of the lens barrel, a driving device configured to provide a driving signal to the driving coil, and a position calculating unit including a first capacitor, configured to provide a ground for an alternating current (AC) signal to the driving coil, a second capacitor, connected to the driving coil to constitute oscillation circuit together with the driving coil, and a position calculating circuit configured to calculate a position of the lens barrel from a frequency of the oscillation circuit.
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