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).

  • Patent number: 12292093
    Abstract: 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: Grant
    Filed: July 18, 2022
    Date of Patent: May 6, 2025
    Assignee: Hyundai Mobis Co., Ltd.
    Inventors: Sang Pil Boo, Yeon Jun Lee, Choong Sik Shin, Il Ho Park
  • Publication number: 20250043835
    Abstract: 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: Application
    Filed: February 29, 2024
    Publication date: February 6, 2025
    Applicant: HYUNDAI MOBIS CO., LTD.
    Inventors: Sang Pil BOO, Yeon Jun LEE, Bo Ram YOON
  • Publication number: 20240051509
    Abstract: 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: Application
    Filed: April 20, 2023
    Publication date: February 15, 2024
    Applicant: HYUNDAI MOBIS CO., LTD.
    Inventors: Sang Pil BOO, Yeon Jun LEE, Choong Sik SHIN, Il Ho PARK
  • Publication number: 20230279914
    Abstract: 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: Application
    Filed: July 18, 2022
    Publication date: September 7, 2023
    Applicant: HYUNDAI MOBIS Co., Ltd.
    Inventors: Sang Pil BOO, Yeon Jun LEE, Choong Sik SHIN, Il Ho PARK
  • Patent number: 8059956
    Abstract: 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: Grant
    Filed: May 20, 2008
    Date of Patent: November 15, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sung-Hoon Kim, Yong-Gu Lee, Doo-Sik Shin, Yeon-Jun Lee
  • Patent number: 7929853
    Abstract: 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: Grant
    Filed: September 3, 2009
    Date of Patent: April 19, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Dong-Youl Park, Young-Kwon Yoon, Yeon-Jun Lee, Jung-Tae Kwon, Man-Ho Kim
  • Patent number: 7907173
    Abstract: 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: Grant
    Filed: July 21, 2008
    Date of Patent: March 15, 2011
    Assignee: 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
  • Publication number: 20100056211
    Abstract: 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: Application
    Filed: September 3, 2009
    Publication date: March 4, 2010
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Dong-Youl PARK, Young-Kwon Yoon, Yeon-Jun Lee, Jung-Tae Kwon, Man-Ho Kim
  • Publication number: 20090040317
    Abstract: 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: Application
    Filed: August 8, 2008
    Publication date: February 12, 2009
    Inventors: Dong-Youl Park, Young-Kwon Yoon, Yeon-Jun Lee
  • Publication number: 20090021610
    Abstract: 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: Application
    Filed: July 21, 2008
    Publication date: January 22, 2009
    Inventors: Yeon-Jun Lee, Young-Kwon Yoon, Yong-Hwan Choi, Sung-Wook Kang, Dong-Youl Park, Woon-Tahk Sung, Jun-Young Lee
  • Publication number: 20080317452
    Abstract: 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: Application
    Filed: May 20, 2008
    Publication date: December 25, 2008
    Inventors: Sung-Hoon KIM, Yong-Gu Lee, Doo-Sik Shin, Yeon-Jun Lee
  • Patent number: 7202727
    Abstract: 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: Grant
    Filed: May 5, 2004
    Date of Patent: April 10, 2007
    Assignee: Samsung Electronics, Co., Ltd.
    Inventors: Yeon-Jun Lee, Yong-Gu Lee
  • Patent number: 7077578
    Abstract: 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: Grant
    Filed: December 4, 2003
    Date of Patent: July 18, 2006
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Yeon-Jun Lee, Dae-Jin Kim
  • Publication number: 20050122154
    Abstract: 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: Application
    Filed: May 5, 2004
    Publication date: June 9, 2005
    Inventors: Yeon-Jun Lee, Yong-Gu Lee
  • Publication number: 20050018976
    Abstract: 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: Application
    Filed: December 4, 2003
    Publication date: January 27, 2005
    Inventors: Yeon-Jun Lee, Dae-Jin Kim