Patents by Inventor Ho-Young Choi

Ho-Young Choi 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).

  • Publication number: 20190225125
    Abstract: A vehicle seat lumbar support including: brackets located on both sides of a seat back frame; a fixing unit having guides for guiding an operating unit and a driver including a motor having a driving shaft, a worm fitted to the driving shaft of the motor, a worm gear rotating by the worm, and a pinion gear fitted to a shaft of the worm gear; and an operating unit driven by the driver and including a block band having base blocks having hooks formed on underside surfaces thereof, a base band for locking the hooks of the base blocks thereonto in such a manner as to be coupled to the guides on top and underside of one side thereof, and a rack gear formed on the base band in such a manner as to engage with the pinion gear fitted to the shaft of the worm gear.
    Type: Application
    Filed: January 23, 2018
    Publication date: July 25, 2019
    Inventors: Jae-Yel SONG, Hai-Tai CHOI, Cheol HEO, Sae-Gil SHIN, Hyang-Mo NAM, Sang-Ho LEE, Ho-Young CHOI, Min-Sung KIM, Ho-Gil JEONG, Sung-Su PARK
  • Publication number: 20150346669
    Abstract: An image forming apparatus supplies a printing medium to a development apparatus upon single-sided printing or double-sided printing. The image forming apparatus may include a printing medium supplying apparatus provided such that various kinds of printing media are compatible. Accordingly, the single-sided printing and the double-sided printing can be easily performed regardless of the size of the printing medium.
    Type: Application
    Filed: May 28, 2015
    Publication date: December 3, 2015
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Ho-Young CHOI, Jin Soo LEE
  • Patent number: 9045298
    Abstract: A paper feeding apparatus includes a pickup roller, a knock-up plate to accommodate recording media thereon and capable of moving to a pickup position and a release position, a forward roller to transfer a recording medium picked up by the pickup roller, a retard roller capable of moving to a contact position and to a separation position, a first control unit to move the knock-up plate to the pickup position and the release position, and a second control unit to move the knock-up plate to the contact position and the separation position, wherein the first control unit and the second control unit are driven by a single driving motor.
    Type: Grant
    Filed: September 13, 2012
    Date of Patent: June 2, 2015
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sang-kyu Shin, Ho-young Choi
  • Patent number: 8711807
    Abstract: An apparatus and method for compensating Quality of Service (QoS) during a handover of a Mobile Station (MS) by a serving Base Station (BS) and a target BS in a wireless broadband access system are provided. The method includes generating a message during a handover from the serving BS to a target BS, the message including at least one of a data transmission/reception time just before the handover, a size of a time window for which a data transmission/reception history is recorded in an accumulated way, and an amount of data transmitted/received during the time window, and transmitting the message to the target BS. The target BS can more accurately find a handover break time and the amount of data transmission/reception in the serving BS at the time the MS has been handed over to the target BS, enabling fast and adequate QoS compensation/correction for each QoS class, and thus facilitating flexible, efficient and accurate QoS provisioning regardless of controlled handover and uncontrolled handover.
    Type: Grant
    Filed: October 12, 2010
    Date of Patent: April 29, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jae-Young Kim, Han-Seok Kim, Ho-Young Choi, Soo-Yong Shin, Bong-Joo Kim
  • Patent number: 8518462
    Abstract: The present invention relates to a composition having an anti-inflammatory activity, comprising extracts or fractions of Chrysanthemum boreale Makino. Since the composition show the prophylactic and therapeutic effects on inflammatory diseases, in particular, atopic dermatitis, it can be used as a pharmaceutical composition, and also applied to various fields, including quasi-drugs, cosmetic compositions, foods, and water softeners.
    Type: Grant
    Filed: September 30, 2010
    Date of Patent: August 27, 2013
    Assignees: Woongjin Coway Co., Ltd., University-Industry Cooperation Group of Kyung Hee University
    Inventors: Chang Soo Han, Won Tae Kim, Ho Young Choi, In Hye Ham, Gab Sik Yang, Chan Sung Bang
  • Publication number: 20130168920
    Abstract: A paper feeding apparatus includes a pickup roller, a knock-up plate to accommodate recording media thereon and capable of moving to a pickup position and a release position, a forward roller to transfer a recording medium picked up by the pickup roller, a retard roller capable of moving to a contact position and to a separation position, a first control unit to move the knock-up plate to the pickup position and the release position, and a second control unit to move the knock-up plate to the contact position and the separation position, wherein the first control unit and the second control unit are driven by a single driving motor.
    Type: Application
    Filed: September 13, 2012
    Publication date: July 4, 2013
    Applicant: Samsung Electronics Co., Ltd
    Inventors: Sang-kyu Shin, Ho-young Choi
  • Publication number: 20120276224
    Abstract: The present invention relates to a composition having an anti-inflammatory activity, comprising extracts or fractions of Chrysanthemum boreale Makino. Since the composition show the prophylactic and therapeutic effects on inflammatory diseases, in particular, atopic dermatitis, it can be used as a pharmaceutical composition, and also applied to various fields, including quasi-drugs, cosmetic compositions, foods, and water softeners.
    Type: Application
    Filed: September 30, 2010
    Publication date: November 1, 2012
    Applicants: University-Industry Cooperation Group of Kyung Hee University, WOONGJIN COWAY CO. LTD.
    Inventors: Chang Soo Han, Won Tae Kim, Ho Young Choi, In Hye Ham, Gab Sik Yang, Chan Sung Bang
  • Patent number: 8050577
    Abstract: An image forming apparatus and a controlling method thereof. The image forming apparatus includes a fixing member having a heating source to heat a developer of a recording medium, a power supply unit to the heating source, first and second temperature sensors for respective first and second positions on the fixing member, a width sensor for the recording medium, and a control unit, when a difference between the first temperature and the second temperature is greater than a predetermined reference value, determining whether the first temperature is abnormal based on the width of the recording medium and, when the first temperature is abnormal, interrupting the power supply to the heating source. An error in the temperature sensor is determined when a temperature difference between the first and second position of the fixing member is greater than a predetermined degree and the recording medium passes through both temperature sensors.
    Type: Grant
    Filed: January 5, 2010
    Date of Patent: November 1, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Ho Young Choi
  • Publication number: 20110090871
    Abstract: An apparatus and method for compensating Quality of Service (QoS) during a handover of a Mobile Station (MS) by a serving Base Station (BS) and a target BS in a wireless broadband access system are provided. The method includes generating a message during a handover from the serving BS to a target BS, the message including at least one of a data transmission/reception time just before the handover, a size of a time window for which a data transmission/reception history is recorded in an accumulated way, and an amount of data transmitted/received during the time window, and transmitting the message to the target BS. The target BS can more accurately find a handover break time and the amount of data transmission/reception in the serving BS at the time the MS has been handed over to the target BS, enabling fast and adequate QoS compensation/correction for each QoS class, and thus facilitating flexible, efficient and accurate QoS provisioning regardless of controlled handover and uncontrolled handover.
    Type: Application
    Filed: October 12, 2010
    Publication date: April 21, 2011
    Applicant: SAMSUNG ELECTRONICS CO. LTD.
    Inventors: Jae-Young KIM, Han-Seok KIM, Ho-Young CHOI, Soo-Yong SHIN, Bong-Joo KIM
  • Publication number: 20100172661
    Abstract: An image forming apparatus and a controlling method thereof. The image forming apparatus includes a fixing member having a heating source to heat a developer of a recording medium, a power supply unit to the heating source, first and second temperature sensors for respective first and second positions on the fixing member, a width sensor for the recording medium, and a control unit, when a difference between the first temperature and the second temperature is greater than a predetermined reference value, determining whether the first temperature is abnormal based on the width of the recording medium and, when the first temperature is abnormal, interrupting the power supply to the heating source. An error in the temperature sensor is determined when a temperature difference between the first and second position of the fixing member is greater than a predetermined degree and the recording medium passes through both temperature sensors.
    Type: Application
    Filed: January 5, 2010
    Publication date: July 8, 2010
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Ho Young Choi
  • Patent number: 7688516
    Abstract: Disclosed is a head-up display device for vehicles. The display device for vehicles includes a panel, on which driving data of a vehicle are displayed; and an aspheric combiner, which magnifies the driving data displayed on the panel and thus creates a virtual image, and has a ratio of DISC to CRC satisfying the below expression (here, 0<|DISC/CRC|<1.0, DISC representing the distance on an optical route between the panel and the combiner, and CRC representing the radius of curvature of the combiner).
    Type: Grant
    Filed: May 6, 2008
    Date of Patent: March 30, 2010
    Assignee: LG Electronics Inc.
    Inventors: Ho Young Choi, Tea Jeong Ahn, Sang Keun Lee
  • Publication number: 20090015933
    Abstract: A projection lens system that has a compact configuration and is capable of correcting a color aberration. In the system, first and second lenses have a weak refractive power, respectively, and a third lens has a strong positive refractive power. A fourth lens corrects an aberration generated by the third lens, and a fifth lens has a negative refractive power. A diffractive optical element is formed on at least one among the surface of the first to fifth lenses. A color aberration and spherical aberration is corrected with the diffractive optical element, so that a high resolution can be realized without increasing the number of lenses and the manufacturing cost can be reduced.
    Type: Application
    Filed: March 1, 2006
    Publication date: January 15, 2009
    Inventors: Ho Young Choi, Hee Jong Moon, Man Hyo Park
  • Publication number: 20080278822
    Abstract: Disclosed is a head-up display device for vehicles. The display device for vehicles includes a panel, on which driving data of a vehicle are displayed; and an aspheric combiner, which magnifies the driving data displayed on the panel and thus creates a virtual image, and has a ratio of DISC to CRC satisfying the below expression (here, 0<|DISC/CRC|<1.0, DISC representing the distance on an optical route between the panel and the combiner, and CRC representing the radius of curvature of the combiner).
    Type: Application
    Filed: May 6, 2008
    Publication date: November 13, 2008
    Inventors: Ho Young CHOI, Tea Jeong Ahn, Sang Keun Lee
  • Patent number: 7002743
    Abstract: A polarization conversion system comprises a glass substrate; reflection type polarization plates, formed between top and bottom surfaces of the glass substrate and inclined at a predetermined angle, separating unpolarized incident light into two polarization directions where two directions are at a right angle to each other; polarization conversion plates coupled to the reflection type polarization plates, converting a polarization direction of polarization light by the reflection type polarization plates; and reflection plates positioned in parallel with the reflection type polarization plates, reflecting incident light from the reflection type polarization plates.
    Type: Grant
    Filed: August 29, 2003
    Date of Patent: February 21, 2006
    Assignee: LG Electronics Inc.
    Inventors: Eun Seong Seo, Young Woon Kim, Ho Young Choi
  • Patent number: 6292138
    Abstract: A diversity antenna distance determining method in radio telecommunications base station is provided. The method comprising the step of determining an allowable correlation coefficient of signals received through the first and the second antennas in a first frequency band which provides good diversity performance; determining a first distance d1 between the antennas which satisfies the determined correlation coefficient in the first frequency band; and, determining a second distance d2 between the two antennas based on d1 in a second frequency band, which is different from the first frequency band. In the present invention, an optimal distance between antennas at one frequency is calculated using the data measured at another frequency to compensate the fading within a coverage area.
    Type: Grant
    Filed: March 15, 2000
    Date of Patent: September 18, 2001
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Ho-Young Choi
  • Patent number: 6137525
    Abstract: A personal data communication apparatus that provides a camera, a magnified image in a display and a video telecommunication system within a compact handset housing is disclosed. The personal data communication apparatus can include a memory that stores image information from the camera converted into an electrical signal as data. A transmission controlling part accesses the data stored in the memory and transmits to a radio public telecommunication network in response to a user signal requesting a video communication and displays the image information received as an image signal from the public telecommunication network. The personal data communications apparatus can further include a receiver receiving a voice, a viewfinder type display adapted to magnify the image information, a speaker for transmitting a voice and a system driving part for entering system operation control signals by the user. The camera is a compact design using a diffractive optic system to be mounted within a housing.
    Type: Grant
    Filed: February 17, 1998
    Date of Patent: October 24, 2000
    Assignee: LG Electronics Inc.
    Inventors: Kyeong-Won Lee, Hee Jong Moon, Ho-Young Choi
  • Patent number: 5444010
    Abstract: This invention relates to a method for forming a stacked capacitor in a semiconductor device. This invention can increase the capacitance of a capacitor by planarizing a polysilicon layer for a charge storage electrode and forming a recess on the planarized polysilicon layer.
    Type: Grant
    Filed: May 13, 1994
    Date of Patent: August 22, 1995
    Assignee: Hyundai Electronics Industries, Ltd.
    Inventors: Sang Hoon Park, Ho Young Choi