Patents by Inventor Yeon-Jun Lee
Yeon-Jun Lee has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 12292093Abstract: A brake apparatus for a vehicle may include: a caliper body fixed to a vehicle body, a driving unit fixed to the caliper body, and configured to generate a rotational force, a piston unit movably installed in the caliper body, and configured to press or release a brake pad according to a moving direction thereof, a transfer gear unit connected to the driving unit, and rotated by the rotational force received from the driving unit, and a planetary gear unit fixed to the caliper body, and configured to move the piston unit forward and backward in connection with the rotation of the transfer gear unit.Type: GrantFiled: July 18, 2022Date of Patent: May 6, 2025Assignee: Hyundai Mobis Co., Ltd.Inventors: Sang Pil Boo, Yeon Jun Lee, Choong Sik Shin, Il Ho Park
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Publication number: 20250043835Abstract: A brake apparatus for a vehicle includes a cylinder housing a piston, a caliper body disposed on the outer side of the cylinder and surrounding a portion of the cylinder, a driver coupled with the cylinder and generating driving force to move the piston, and a coupling member coupling the cylinder with the caliper body.Type: ApplicationFiled: February 29, 2024Publication date: February 6, 2025Applicant: HYUNDAI MOBIS CO., LTD.Inventors: Sang Pil BOO, Yeon Jun LEE, Bo Ram YOON
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Publication number: 20240051509Abstract: A structure of a brake system that pressurizes a brake pad as brake fluid in a master cylinder uniformly drives a plurality of caliper pistons by a master piston driven by receiving power of a braking motor of the present disclosure may be simplified, and an opposed type brake system that simultaneously drives a pair of brake pads may be implemented.Type: ApplicationFiled: April 20, 2023Publication date: February 15, 2024Applicant: HYUNDAI MOBIS CO., LTD.Inventors: Sang Pil BOO, Yeon Jun LEE, Choong Sik SHIN, Il Ho PARK
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Publication number: 20230279914Abstract: A brake apparatus for a vehicle may include: a caliper body fixed to a vehicle body, a driving unit fixed to the caliper body, and configured to generate a rotational force, a piston unit movably installed in the caliper body, and configured to press or release a brake pad according to a moving direction thereof, a transfer gear unit connected to the driving unit, and rotated by the rotational force received from the driving unit, and a planetary gear unit fixed to the caliper body, and configured to move the piston unit forward and backward in connection with the rotation of the transfer gear unit.Type: ApplicationFiled: July 18, 2022Publication date: September 7, 2023Applicant: HYUNDAI MOBIS Co., Ltd.Inventors: Sang Pil BOO, Yeon Jun LEE, Choong Sik SHIN, Il Ho PARK
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Patent number: 8059956Abstract: An auto focus (AF) apparatus and method for a camera that improves the AF action by reducing the number of time and steps required of a conventional apparatus and method. An encoder initial value is detected by measuring an initial position of a lens unit by means of an encoder; matching the measured encoder initial value to an initial position value to which the lens unit is to move while performing the auto focus; performing the auto focus starting from the matched initial position value, and dividing a distance that the lens unit is to cover into sections corresponding to a preset number of steps; detecting an edge value which shows a brightness change for a contour of a subject for as many as the number of the preset steps. The AF is completed by moving the lens unit to a position corresponding to a maximum edge value selected from among the detected edge values.Type: GrantFiled: May 20, 2008Date of Patent: November 15, 2011Assignee: Samsung Electronics Co., Ltd.Inventors: Sung-Hoon Kim, Yong-Gu Lee, Doo-Sik Shin, Yeon-Jun Lee
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Patent number: 7929853Abstract: A method and an apparatus for taking pictures on a mobile communication terminal having a camera module are provided, which can control the photographing of an object in accordance with the motion of the object. The method includes generating a current frame by photographing an object, determining whether blurring has occurred in the current frame, measuring an amount of motion of the current frame if no blurring has occurred in the generated current frame, and storing the current frame if the measured amount of motion is greater than a pre-stored reference amount of motion.Type: GrantFiled: September 3, 2009Date of Patent: April 19, 2011Assignee: Samsung Electronics Co., Ltd.Inventors: Dong-Youl Park, Young-Kwon Yoon, Yeon-Jun Lee, Jung-Tae Kwon, Man-Ho Kim
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Patent number: 7907173Abstract: An apparatus and method for controlling noise caused by vibration in a camera module for a mobile device are provided. The method includes transmitting a vibration signal sensed by a vibration sensor to a Choice Coil Motor (VCM) driver based on the vibration signal, applying, by the VCM driver, a reverse bias to a VCM upon receiving, by the VCM driver, the vibration signal from the vibration sensor, and exerting, by the VCM to which the reverse bias is applied, an electromagnetic force in a reverse direction in order to fix and halt an actuator.Type: GrantFiled: July 21, 2008Date of Patent: March 15, 2011Assignee: Samsung Electronics Co., Ltd.Inventors: Yeon-Jun Lee, Young-Kwon Yoon, Yong-Hwan Choi, Sung-Wook Kang, Dong-Youl Park, Woon-Tahk Sung, Jun-Young Lee
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Publication number: 20100056211Abstract: A method and an apparatus for taking pictures on a mobile communication terminal having a camera module are provided, which can control the photographing of an object in accordance with the motion of the object. The method includes generating a current frame by photographing an object, determining whether blurring has occurred in the current frame, measuring an amount of motion of the current frame if no blurring has occurred in the generated current frame, and storing the current frame if the measured amount of motion is greater than a pre-stored reference amount of motion.Type: ApplicationFiled: September 3, 2009Publication date: March 4, 2010Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Dong-Youl PARK, Young-Kwon Yoon, Yeon-Jun Lee, Jung-Tae Kwon, Man-Ho Kim
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Publication number: 20090040317Abstract: A camera module having an image sensor, which forms a low-pixel image sensor integrated with an image signal processing unit such as Image Signal Processor (ISP)/Analog Front End (AFE) includes: an image sensor unit for converting light being incident after passing through a prism into image data and applying image data, which is hand shake-corrected by movements between a plurality of positions, to a multimedia processor of a product, a drive controller for receiving and calculating hand-shake information acquired by a plurality of gyrosensors and calculating an amount of correction to control driving of a sensor driver, a motor, and lenses, and the sensor driver for moving the image sensor unit to correct a hand shake under control of the drive controller.Type: ApplicationFiled: August 8, 2008Publication date: February 12, 2009Inventors: Dong-Youl Park, Young-Kwon Yoon, Yeon-Jun Lee
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Publication number: 20090021610Abstract: An apparatus and method for controlling noise caused by vibration in a camera module for a mobile device are provided. The method includes transmitting a vibration signal sensed by a vibration sensor to a Choice Coil Motor (VCM) driver based on the vibration signal, applying, by the VCM driver, a reverse bias to a VCM upon receiving, by the VCM driver, the vibration signal from the vibration sensor, and exerting, by the VCM to which the reverse bias is applied, an electromagnetic force in a reverse direction in order to fix and halt an actuator.Type: ApplicationFiled: July 21, 2008Publication date: January 22, 2009Inventors: Yeon-Jun Lee, Young-Kwon Yoon, Yong-Hwan Choi, Sung-Wook Kang, Dong-Youl Park, Woon-Tahk Sung, Jun-Young Lee
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Publication number: 20080317452Abstract: An auto focus (AF) apparatus and method for a camera that improves the AF action by reducing the number of time and steps required of a conventional apparatus and method. An encoder initial value is detected by measuring an initial position of a lens unit by means of an encoder; matching the measured encoder initial value to an initial position value to which the lens unit is to move while performing the auto focus; performing the auto focus starting from the matched initial position value, and dividing a distance that the lens unit is to cover into sections corresponding to a preset number of steps; detecting an edge value which shows a brightness change for a contour of a subject for as many as the number of the preset steps. The AF is completed by moving the lens unit to a position corresponding to a maximum edge value selected from among the detected edge values.Type: ApplicationFiled: May 20, 2008Publication date: December 25, 2008Inventors: Sung-Hoon KIM, Yong-Gu Lee, Doo-Sik Shin, Yeon-Jun Lee
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Patent number: 7202727Abstract: A circuit for shifting a level between two bi-directional signals having different voltage levels. The circuit includes a first analog switch including a first switching control terminal connected to first directional signal stage, a first input terminal connected to a first level of operating voltage, and a first output terminal connected to a second directional signal stage, for performing a switching operation for the first input terminal and the first output terminal based on a state of logic level of a signal from the second directional signal stage.Type: GrantFiled: May 5, 2004Date of Patent: April 10, 2007Assignee: Samsung Electronics, Co., Ltd.Inventors: Yeon-Jun Lee, Yong-Gu Lee
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Patent number: 7077578Abstract: Disclosed herein is a hot plugging device for optical transceiver modules. The hot plugging device comprises a module housing, latching grooves extended from prescribed positions of both sides of the module housing to one end of the module housing, respectively, sliding members extended in the longitudinal direction of the module housing and linearly movably accommodated in the latching grooves, respectively, and a rotating member rotatably attached to one end of the module housing for engaging ends of the sliding members with corresponding ends of the latching grooves, respectively, while the rotating member is placed at a prescribed angle to the longitudinal direction of the module housing. With the hot plugging device of the present invention, a locking unit of the module housing is easily released, and the release of the locking unit is maintained, whereby the module housing is easily separated from a cage.Type: GrantFiled: December 4, 2003Date of Patent: July 18, 2006Assignee: Samsung Electronics Co., Ltd.Inventors: Yeon-Jun Lee, Dae-Jin Kim
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Publication number: 20050122154Abstract: A circuit for shifting a level between two bidirectional signals having different voltage levels. The circuit includes a first analog switch including a first switching control terminal connected to first directional signal stage, a first input terminal connected to a first level of operating voltage, and a first output terminal connected to a second directional signal stage, for performing a switching operation for the first input terminal and the first output terminal based on a state of logic level of a signal from the second directional signal stage.Type: ApplicationFiled: May 5, 2004Publication date: June 9, 2005Inventors: Yeon-Jun Lee, Yong-Gu Lee
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Publication number: 20050018976Abstract: Disclosed herein is a hot plugging device for optical transceiver modules. The hot plugging device comprises a module housing, latching grooves extended from prescribed positions of both sides of the module housing to one end of the module housing, respectively, sliding members extended in the longitudinal direction of the module housing and linearly movably accommodated in the latching grooves, respectively, and a rotating member rotatably attached to one end of the module housing for engaging ends of the sliding members with corresponding ends of the latching grooves, respectively, while the rotating member is placed at a prescribed angle to the longitudinal direction of the module housing. With the hot plugging device of the present invention, a locking unit of the module housing is easily released, and the release of the locking unit is maintained, whereby the module housing is easily separated from a cage.Type: ApplicationFiled: December 4, 2003Publication date: January 27, 2005Inventors: Yeon-Jun Lee, Dae-Jin Kim