Patents by Inventor Joong-Ho An

Joong-Ho An 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).

  • COMPOSITE POSITIVE ELECTRODE ACTIVE MATERIAL AND POSITIVE ELECTRODE AND LITHIUM BATTERY COMPRISING THE COMPOSITE POSITIVE ELECTRODE ACTIVE MATERIAL
    Publication number: 20160064730
    Abstract: A composite positive electrode active material includes a lithium transition metal oxide represented by at least one of LiNixCoyMnzO2 (Formula 1) and aLi2MnO3.(1?a)LiMO2 (Formula 2). In Formula 1, and a vanadium-based compound including a polyanion. In Formula 1, 0<x?0.8, 0<y?0.5, and 0<z?0.5. In Formula 2, 0<a<1 and M is at least one element selected from aluminum (Al), magnesium (Mg), manganese (Mn), cobalt (Co), chromium (Cr), vanadium (V), iron (Fe), and nickel (Ni).
    Type: Application
    Filed: April 16, 2015
    Publication date: March 3, 2016
    Inventors: Haneol PARK, Seonyoung KWON, Minhan KIM, Jihyun KIM, Joong-Ho MOON, Kyounghyun KIM, Dohyung PARK, Jongseo CHOI
  • Phase shift circuit and power factor correction circuit including the same
    Patent number: 9270165
    Abstract: There are provided a phase shift circuit and a power factor correction circuit including the same. The phase shift circuit includes a switching circuit unit charging power in or discharging power from a capacitor through a plurality of switching devices and comparing a voltage of the capacitor with a predetermined reference voltage, and a clock generating unit generating a reference clock signal based on an output of the switching circuit unit, wherein the switching circuit unit turns the plurality of switching devices on or off, based on currents from inductors respectively included in a main circuit and a sub-circuit of a power factor correction circuit to determine a polarity of the voltage of the capacitor.
    Type: Grant
    Filed: May 10, 2013
    Date of Patent: February 23, 2016
    Assignees: SAMSUNG ELECTRO-MECHANICS CO., LTD., University of Seoul Industry Cooperation Foundation
    Inventors: Yu Jin Jang, Hwan Cho, Yong Seong Roh, Young Jin Moon, Jeong Pyo Park, Joong Ho Choi, Jeong Mo Yang, Chang Sik Yoo
  • One-Pot Synthesis of Flexible Poly-P-(Phenyleneethynylene)s with Controlled Conjugated Length
    Publication number: 20160039962
    Abstract: A novel monomer design for the synthesis of PPE-type polymers containing conjugated segments of well-defined length connected by flexible linkers under Sonogashira reaction conditions is presented. The resulting polymers retain the photophysical properties of a fully conjugated PPE. The extent of incorporation of the flexible units along the backbone is governed by the comonomer feed ratio and can be varied in a statistically predictable fashion.
    Type: Application
    Filed: August 10, 2015
    Publication date: February 11, 2016
    Applicant: The Florida International University Board of Trustees
    Inventors: Joong Ho Moon, Tereza Vokata
  • Phase shift circuit and power factor correction circuit including the same
    Patent number: 9252655
    Abstract: A phase shift circuit may include a ramp generation unit charging or discharging a capacitor connected to a switch device to generate a ramp signal, a reference signal generation unit generating a predetermined reference signal from the ramp signal, and a comparison unit comparing the ramp signal with the reference signal to generate a clock signal, wherein at least one of the reference signal generation unit and the comparison unit changes a negative or positive value of offset components included in the reference signal or the ramp signal within every operating period of the switch device.
    Type: Grant
    Filed: April 11, 2013
    Date of Patent: February 2, 2016
    Assignees: SAMSUNG ELECTRO-MECHANICS CO., LTD., UNIVERSITY OF SEOUL INDUSTRY COOPERATION FOUNDATION
    Inventors: Jeong Mo Yang, Hwan Cho, Yong Seong Roh, Young Jin Moon, Jeong Pyo Park, Chang Sik Yoo, Yu Jin Jang, Joong Ho Choi
  • Head mounted display apparatus and contents display method
    Patent number: 9250443
    Abstract: Disclosed are a head-mounted display apparatus and a contents display method. The head-mounted display apparatus includes: a mobile device tracing information processing unit for receiving position information or orientation information of a mobile device and generating tracing information of the mobile device based on the received position information or orientation information of the mobile device; a gesture processing unit for receiving input information of the mobile device and generating gesture information to change an output format of contents by using the received input information; a rendering unit for generating a predetermined virtually augmented contents image based on the tracing information of the mobile device and the gesture information; and a display unit for displaying the generated virtually augmented contents image.
    Type: Grant
    Filed: July 6, 2012
    Date of Patent: February 2, 2016
    Assignee: Korea Institute of Science and Technology
    Inventors: Ji Hyung Park, Dong Wook Yoon, Yong Hun Choi, Joong Ho Lee
  • Apparatus and Method for Recognizing Media, Financial Device
    Publication number: 20150379337
    Abstract: The present disclosure relates to an apparatus and a method for recognizing media and a financial device. The apparatus for recognizing media according to an exemplary embodiment of the present disclosure includes: an image sensor configured to emit different first light source and second light source to media including at least one character to acquire a first image and a second image corresponding to each light source; a noise detector configured to detect noise of a region in which the character is included from the first image and the second image; and a controller configured to combine the first image and the second image depending on the detected noise information to recognize the character included in the media.
    Type: Application
    Filed: June 29, 2015
    Publication date: December 31, 2015
    Inventors: Jung In Lee, Beum Yong Koo, Eun Ki Kim, Joong Ho An, Han Cheol Cho
  • Apparatus and Method for Recognizing Media and Financial Device
    Publication number: 20150379338
    Abstract: The present disclosure relates to an apparatus and a method for recognizing media and a financial device. The apparatus for recognizing media according to an exemplary embodiment of the present disclosure comprises: an image sensor; a skew detector configured to detect skew of the media from media image acquired by the image sensor; a noise detector configured to detect a linear component in a region of interest which include character of the media image and a noise included in the media image based on direction information of the detected linear component and the skew of the media; and a controller configured to remove the detected noise from the region of interest and recognize the character of the region of interest from which the noise is removed.
    Type: Application
    Filed: June 30, 2015
    Publication date: December 31, 2015
    Inventors: Jung In Lee, Beum Yong Koo, Eun Ki Kim, Joong Ho An, Han Cheol Cho
  • Power factor correction circuit
    Patent number: 9225235
    Abstract: There is provided a power factor correction circuit including: a power conversion circuit unit controlling an inductor current according to a switching signal applied to a main switch to convert an external input voltage into an output voltage having a predetermined range; an imbalance detection circuit outputting an imbalance state signal when the external input voltage is in an unbalanced state by using the inductor current; and a soft start circuit unit performing soft starting by adjusting the switching signal when the imbalance state signal is output by the imbalance detection circuit unit.
    Type: Grant
    Filed: May 10, 2013
    Date of Patent: December 29, 2015
    Assignees: SAMSUNG ELECTRO-MECHANICS CO., LTD., UNIVERSITY OF SEOUL INDUSTRY COOPERATION FOUNDATION
    Inventors: Yu Jin Jang, Hwan Cho, Yong Seong Roh, Young Jin Moon, Jeong Pyo Park, Chang Sik Yoo, Jeong Mo Yang, Joong Ho Choi
  • COMPOSITE CATHODE ACTIVE MATERIAL, LITHIUM BATTERY INCLUDING THE SAME, AND METHOD OF PREPARING THE SAME
    Publication number: 20150340689
    Abstract: A composite cathode active material includes: a core including a material capable of intercalation and deintercalation of lithium; and a first coating layer on at least one portion of the core, where the first coating layer includes zirconium oxide. A lithium battery includes a cathode including the composite cathode active material. Methods of preparing the composite cathode active material are also disclosed.
    Type: Application
    Filed: March 16, 2015
    Publication date: November 26, 2015
    Inventors: Yu-Mi Song, Ming-Zi Hong, Jeong-Hoon Kim, Do-Hyung Park, Min-Han Kim, Joong-Ho Moon, Han-Eol Park, Kyoung-Hyun Kim, Dong-Jin Kim, Jeon-Jin Choi, Gyu-Ran Jeon, Sun-Ho Kang
  • ACTIVE MATERIAL PRECURSOR AND METHOD OF PREPARING THE SAME
    Publication number: 20150336803
    Abstract: An active material precursor having a hollow structure is represented by Formula 1: NiaMnbCocMd(OH)2??Formula 1 where, in Formula 1, 0<a?1, 0<b?1, 0<c?1, 0?d?1, and a+b+c=1; and M is at least one metal selected from the group consisting of titanium (Ti) vanadium (V), chromium (Cr), iron (Fe), copper (Cu), aluminum (Al), magnesium (Mg), zirconium (Zr), and boron (B). A method of the active material precursor includes: mixing a nickel precursor, a manganese precursor, a cobalt precursor, a metal (M) precursor, and a solvent to prepare a precursor mixture; and mixing the precursor mixture and a pH adjusting agent to adjust a pH value of the resultant to be in a range of about 11.0 to about 11.2.
    Type: Application
    Filed: February 17, 2015
    Publication date: November 26, 2015
    Inventors: Joong-Ho Moon, Do-Hyung Park, Min-Han Kim, Ji-Hyun Kim, Seon-Young Kwon, Kyoung-Hyun Kim
  • START-UP CIRCUIT AND POWER DEVICE USING THE SAME
    Publication number: 20150318779
    Abstract: Disclosed herein are a start-up circuit capable of reducing a leakage current to reduce power consumption, and a power device using the same. The start-up circuit includes: a bias unit connected between a first power source and a second power source and allowing a first current to flow from the first power source to the second power source according to a predetermined voltage; a first start unit connected to the bias unit and driving a second current to apply the predetermined voltage to the bias unit, and stopping driving the second current when a voltage received from the second power source reaches a first voltage; and a second start unit connected to the bias unit and driving a third current, the predetermined voltage being applied to the bias unit by the third current, and stopping driving the third current upon receiving a stop signal.
    Type: Application
    Filed: April 23, 2015
    Publication date: November 5, 2015
    Applicants: Samsung Electro-Mechanics Co., Ltd., University of Seoul Industry Cooperation Foundation
    Inventors: Sang Hyun CHA, Soo Hyun MOON, Hye Jin LEE, Joong Ho CHOI, Ji Hwan KIM, Chang Seok LEE, Yun Joong LEE
  • DEVICE AND METHOD FOR TRACKING GAZE
    Publication number: 20150309567
    Abstract: A gaze tracking device includes a first image acquisition unit installed at a right side of a face of a user to acquire a side image of a right eye, a second image acquisition unit installed at a left side of the face of the user to acquire a side image of a left eye, a fixing unit to fix the first image acquisition unit and the second image acquisition unit, and a gaze tracking unit to track a gaze position of the user by deriving a pupil and iris area, a sclera area, and an angle between eyelids from the side image of the right eye and the side image of the left eye. Accordingly, accurate gaze tracking is ensured while realizing a compact and lightweight gaze tracking device.
    Type: Application
    Filed: July 8, 2014
    Publication date: October 29, 2015
    Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Ji Hyung PARK, Joong Ho LEE, Chul Woo CHO
  • BIAXIAL ROTATION TYPE REDUCER
    Publication number: 20150267777
    Abstract: The present invention relates to a biaxial rotation type reducer in which a driving force transferred to one input shaft is outputted to two output shafts and the two output shafts are rotated in opposing directions to each other. Because the driving force transferred to one input shaft is outputted to the two output shafts and the two output shafts are rotated in opposing directions to each other, the biaxial rotation type reducer can make a progress direction of a ship or a boat constant if the biaxial rotation type reducer is used in the ship, the boat or a submarine which generates propulsion by rotating a propeller using a driving force of a motor. If the biaxial rotation type reducer is used in a mixer, because the two blades are rotated in the opposing directions to each other, it can improve grinding speed when the mixer grinds food.
    Type: Application
    Filed: September 16, 2013
    Publication date: September 24, 2015
    Inventor: Joong Ho SHIN
  • REFRIGERATOR
    Publication number: 20150260447
    Abstract: A refrigerator having a structure in which, when a first door or a second door is opened, a lamp installed at sidewalls of an opening in the first door emits light so that food stored in a door guard disposed in the opening can be illuminated. The refrigerator includes a main body having a storage compartment; a first door that is rotatably disposed in front of the main body and opens/closes the storage compartment, and has an opening formed therein, where at least one door guard is disposed in the opening; a second door that is rotatably disposed in front of the first door, opens/closes the opening, and is rotated in the same direction as the first door; and a lamp installed at the sidewalls of the opening.
    Type: Application
    Filed: March 6, 2015
    Publication date: September 17, 2015
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Joong Ho Kim, Youn Tae Shin, Wan Hyeong Lee
  • OOK MODULATION DEVICE AND WIRELESS TRANSMITTING DEVICE INCLUDING THE SAME
    Publication number: 20150256369
    Abstract: An OOK modulation device according to the present inventive concept includes: an oscillator outputting a first frequency signal in which the frequency varies according to an input voltage; a frequency multiplier switching unit operating according to an OOK input data and switching on/off a second frequency signal that is obtained by multiplying the first frequency signal; and a switching amplifying unit amplifying and switching the second frequency signal according to the OOK input data to output an OOK modulation signal.
    Type: Application
    Filed: September 6, 2013
    Publication date: September 10, 2015
    Applicant: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Chul Soon Park, Chul Woo Byeon, Chae Jun Lee, Chong Hyun Yoon, Joong Ho Lee, Seong Jun Cho, Hong Yi Kim, In Sang Song
  • COMPOSITE CATHODE ACTIVE MATERIAL, METHOD OF PREPARING THE SAME, AND CATHODE AND LITHIUM BATTERY INCLUDING THE COMPOSITE CATHODE ACTIVE MATERIAL
    Publication number: 20150228970
    Abstract: A composite cathode active material includes a material capable of intercalating or deintercalating lithium; and a solid ion conductor. A cathode and a lithium battery each include the composite cathode active material. A method of preparing a composite cathode active material includes: mixing a core including a cathode active material and a solid ion conductor; and forming a coating layer including the solid ion conductor on the core utilizing a dry method.
    Type: Application
    Filed: December 11, 2014
    Publication date: August 13, 2015
    Inventors: Yu-Mi Song, Ming-Zi Hong, Do-Hyung Park, Seon-Young Kwon, Joong-Ho Moon, Ju-Hyeong Han, Han-Eol Park, Min-Han Kim, Kyoung-Hyun Kim, Ki-Hyun Kim, Sang-Hoon Kim
  • GATE DRIVER INCLUDING LEVEL SHIFTER AND METHOD FOR DRIVING THE SAME
    Publication number: 20150214929
    Abstract: A gate driver comprises a level shifter outputting first and second signals; an output switch unit causing a first current flow in an output terminal by a voltage of the first signal in a first section of the driver to charge the output terminal, causing a second current flow by a voltage of the second signal in a second section, and discharging the output terminal depending on the second current. A current sensing unit causes a sensing current flow depending on the voltage of the second signal in the second section and outputting a preset voltage depending on the flow of the sensing current. A feedback unit causes the voltage of the second signal to attain at least a preset level in the second section depending on the preset voltage.
    Type: Application
    Filed: January 28, 2015
    Publication date: July 30, 2015
    Inventors: Soo Woong LEE, Joong Ho CHOI
  • Illumination driving apparatus for light emitting diode and method thereof
    Patent number: 9066399
    Abstract: There is provided an illumination driving apparatus for a light emitting diode, the apparatus including: a light emitting unit including M number of light emitting diodes (LEDs) connected in series and driven by an output voltage rectified in a rectifying unit; an LED switch unit including N number of LED switches connected in parallel with at least N number of the M LEDs, respectively, and connected in series; an LED switch control signal generating unit comparing the output voltage of the rectifying unit with each of the first to Nth preset reference voltages to generate N number of LED switch control signals controlling the LED switch unit; and an LED switch controlling unit transferring the N number of LED switch control signals to the LED switch unit.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: June 23, 2015
    Assignees: SAMSUNG ELECTRO-MECHANICS CO., LTD., UNIVERSITY OF SEOUL INDUSTRY COOPERATION FOUNDATION
    Inventors: Deuk Hee Park, Joong Ho Choi, Sang Hyun Cha, Jae Shin Lee, Chang Seok Lee, Yun Joong Lee
  • Power supply device and control circuit thereof
    Patent number: 9066395
    Abstract: There are provided a power supply device switching power input to a primary side to supply the power to a predetermined load connected to a secondary side electrically insulated from the primary side and a control circuit thereof. The control circuit generates a predetermined PWM signal to apply the PWM signal to a dimming switch connected to an end of the load and controls a switching frequency of the primary side, based on a control voltage generated according to a feedback signal according to the power supplied to the load and the PWM signal, and the control voltage maintains a constant difference between a minimum voltage level and a maximum voltage level regardless of a duty of the PWM signal.
    Type: Grant
    Filed: October 25, 2013
    Date of Patent: June 23, 2015
    Assignees: SAMSUNG ELECTRO-MECHANICS CO., LTD., UNIVERSITY OF SEOUL INDUSTRY COOPERATION FOUNDATION
    Inventors: Dae Hoon Han, Seo Hyung Kim, Seung Ryung Ryu, Joong Ho Choi, Joo Hyung Lee, Hong Jin Kim, Jae Shin Lee, Kang Yoon Lee
  • COMPOSITE CATHODE ACTIVE MATERIAL, CATHODE AND LITHIUM BATTERY COMPRISING THE SAME, AND PREPARATION METHOD THEREOF
    Publication number: 20150171423
    Abstract: A composite cathode active material including a core comprising a lithium compound, and a coating layer formed on at least one portion of the core and including at least two oxide phases having different structures, a cathode and a lithium battery including the same, and a method of preparing the composite cathode active material.
    Type: Application
    Filed: August 28, 2014
    Publication date: June 18, 2015
    Inventors: Min-Han Kim, Joong-Ho Moon, Han-Eol Park, Kyoung-Hyun Kim, Do-Hyung Park, Yu-Mi Song, Ming-Zi Hong, Jeong-Hoon Kim, Dong-Jin Kim, Jeon-Jin Choi, Gyu-Ran Jeon, Sun-Ho Kang