Patents by Inventor Won Cha

Won Cha 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).

  • Nonvolatile memory device
    Patent number: 8812777
    Abstract: A nonvolatile memory device includes: N (N is an integer equal to or greater than 2) number of nonvolatile memory cells disposed in a flag area of a page, N number of flag page buffers configured to input and output flag data to and from the nonvolatile memory cells of the flag area, and a data input/output control unit configured to select R number of flag page buffers so that the flag data is inputted and outputted from the R selected flag page buffers and no flag data is inputted and outputted through unselected N-R number of flag page buffers, wherein no one flag page buffer of the R selected flag page buffers is immediately adjacent to another one of the R selected flag page buffers.
    Type: Grant
    Filed: June 5, 2012
    Date of Patent: August 19, 2014
    Assignee: Hynix Semiconductor Inc.
    Inventors: Jae-Won Cha, Sung-Hoon Ahn
  • DEPTH PIXEL INCLUDED IN THREE-DIMENSIONAL IMAGE SENSOR, THREE-DIMENSIONAL IMAGE SENSOR INCLUDING THE SAME AND METHOD OF OPERATING DEPTH PIXEL INCLUDED IN THREE-DIMENSIONAL IMAGE SENSOR
    Publication number: 20140225173
    Abstract: A depth pixel of a three-dimensional image sensor includes a first photo gate which is turned on/off in response to a first photo control signal, a first photo detection area configured to generate first charges based on a received light reflected from a subject when the first photo gate is turned on, a first transmission gate which is turned on/off in response to a first transmission control signal, a first floating diffusion area configured to accumulate the first charges generated from the first photo detection area when the first transmission gate is turned on, and a first compensation unit configured to generate second charges which are different from the first charges based on ambient light components included in the received light to supply the second charges to the first floating diffusion area.
    Type: Application
    Filed: December 10, 2013
    Publication date: August 14, 2014
    Inventors: SEOUNG-HYUN KIM, YOON-DONG PARK, YONG-JEI LEE, JOO-YEONG GONG, HEE-WOO PARK, SEUNG-WON CHA
  • SENSING PIXEL AND IMAGE SENSOR INCLUDING SAME
    Publication number: 20140198183
    Abstract: A depth-sensing pixel included in a three-dimensional (3D) image sensor includes: a photoelectric conversion device configured to generate an electrical charge by converting modulated light reflected by a subject; a capture transistor, controlled by a capture signal applied to the gate thereof, the photoelectric conversion device being connected to the drain thereof; and a transfer transistor, controlled by a transfer signal applied to the gate thereof, the source of the capture transistor being connected to the drain thereof, and a floating diffusion region being connected to the source thereof.
    Type: Application
    Filed: January 15, 2014
    Publication date: July 17, 2014
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Seoung-hyun Kim, Yong-jei Lee, Joo-yeong Gong, Sung-chul Kim, Yoon-dong Park, Hee-woo Park, Seung-won Cha
  • Fuel cell with air channel actuator
    Patent number: 8709671
    Abstract: Disclosed is a fuel cell including, a stack having fuel channels through which fuel flows and air channels through which air flows, the fuel channels and air channels being located at both sides of a reaction film, an actuator disposed to be involved in the air channels, the actuator allowing external air of the stack to affect the air channels, and a skirt extending from the stack with communicating with the air channels.
    Type: Grant
    Filed: January 27, 2010
    Date of Patent: April 29, 2014
    Assignee: Korea Institute of Science and Technology
    Inventors: Dae-Young Lee, Seo Young Kim, Young Soo Chang, Young-Sheen Hwang, Hun-Sik Han, Suk-Won Cha
  • Membrane electrode assembly comprising a hydrogen permeable thin film, solid oxide fuel cell comprising the same and method of preparing the membrane electrode assembly
    Patent number: 8669020
    Abstract: A membrane electrode assembly including an anode that incorporates a porous support and a hydrogen permeable metal thin film disposed on the porous support; a cathode; and a proton conductive solid oxide electrolyte membrane disposed between the anode and the cathode.
    Type: Grant
    Filed: June 29, 2011
    Date of Patent: March 11, 2014
    Assignees: Samsung Electronics Co., Ltd., Snu R&DB Foundation
    Inventors: Pil-won Heo, Yoon-ho Lee, Sang-kyun Kang, Jin-su Ha, Suk-won Cha
  • SEMICONDUCTOR MEMORY DEVICE AND METHODS OF OPERATING THE SAME
    Publication number: 20140043908
    Abstract: A semiconductor memory device comprises a memory cell array including a plurality of memory blocks each including a plurality of pages, wherein each of the plurality of pages includes at least one flag cell indicating whether data is in a corresponding page, and a peripheral circuit configured to read data of flag cells of a selected memory block in response to an erase request and to omit an erase operation on the selected memory block based on the data of the flag cells.
    Type: Application
    Filed: September 13, 2012
    Publication date: February 13, 2014
    Applicant: SK HYNIX INC.
    Inventors: Seong Hun PARK, Jae Won CHA
  • FLEXIBLE FUEL CELL AND METHOD OF MANUFACTURING THE SAME
    Publication number: 20130260276
    Abstract: Disclosed herein is a flexible fuel cell, including: (i) an anode comprising an anode end plate structure made of a polymer material and provided with a hydrogen flow channel and a collector made of a metal layer deposited on the anode end plate structure; (ii) a cathode comprising a cathode end plate structure made of a polymer material and provided with an air flow channel having air holes and a collector formed of a metal layer deposited on the cathode end plate structure; and (iii) a membrane electrode assembly (MEA) comprising a polymer electrolyte membrane whose surface is coated with a catalyst layer and a gas diffusion layer (GDL) provided on at least one side thereof, wherein the membrane electrode assembly is interposed and pressed between the anode and the cathode.
    Type: Application
    Filed: February 25, 2013
    Publication date: October 3, 2013
    Applicants: XFC Inc., SNU R&DB Foundation
    Inventors: Ik Whang Chang, Tae Hyun Park, Yoon Ho Lee, Suk Won Cha, Ju-Hyung Lee
  • SEMICONDUCTOR MEMORY DEVICE AND METHOD OF OPERATING THE SAME
    Publication number: 20130163332
    Abstract: A semiconductor memory device includes memory blocks including pages connected to plural main cells, a spare block, including pages connected to spare cells, configured to store a random seed for randomization to the spare cells connected to each page, page buffers configured to scramble data inputted for program operation by using random seed read from a page of the spare block selected by a control signal to transmit the scrambled data to the bit line, and configured to descramble data read from a main cell selected for read operation and output the descrambled data, and a controller configured to output the control signal to select a page of the spare block corresponding to an address of a page of the memory block selected for the programming or reading, and configured to control a scramble operation and a descramble operation of the page buffers.
    Type: Application
    Filed: August 30, 2012
    Publication date: June 27, 2013
    Inventor: Jae Won CHA
  • NONVOLATILE MEMORY DEVICE
    Publication number: 20130151758
    Abstract: A nonvolatile memory device includes: N (N is an integer equal to or greater than 2) number of nonvolatile memory cells disposed in a flag area of a page, N number of flag page buffers configured to input and output flag data to and from the nonvolatile memory cells of the flag area, and a data input/output control unit configured to select R number of flag page buffers so that the flag data is inputted and outputted from the R selected flag page buffers and no flag data is inputted and outputted through unselected N?R number of flag page buffers, wherein no one flag page buffer of the R selected flag page buffers is immediately adjacent to another one of the R selected flag page buffers.
    Type: Application
    Filed: June 5, 2012
    Publication date: June 13, 2013
    Inventors: Jae-Won CHA, Sung-Hoon AHN
  • Separator for fuel cell and fuel cell comprising the same
    Patent number: 8460840
    Abstract: A separator for a fuel cell is provided. The separator comprises a flow path member and a base separator. The flow path member is made of a graphite foil and has a flow path through which fluids pass. The base separator has a seating recess formed on the surface thereof. The flow path member is mounted in the seating recess. The flow path is formed by pressing the graphite foil. The separator can be produced at reduced processing cost in a short processing time.
    Type: Grant
    Filed: December 21, 2009
    Date of Patent: June 11, 2013
    Assignee: XFC Inc.
    Inventors: Ju-Hyung Lee, Yong-Shin Hwang, Suk-Won Cha, Jong-Won Choi
  • Indoor unit of air conditioner
    Patent number: 8408021
    Abstract: The present invention relates to a picture frame type indoor unit of an air conditioner for mounting a photograph or a picture on a wall. The indoor unit of an air conditioner includes a cabinet (10), a picture frame panel (30) mounted in front of the cabinet (10), and a link mechanism (200) hinged both on the cabinet (10) and the picture frame panel (30), thereby permitting convenient working in inside inspection or repair of the indoor unit even if the picture frame panel (30) is not dismounted from the cabinet (10) completely.
    Type: Grant
    Filed: November 30, 2006
    Date of Patent: April 2, 2013
    Assignee: LG Electronics Inc.
    Inventors: Sang Won Cha, Tae Jun Park
  • ELECTROLYTE MEMBRANE FOR SOLID OXIDE FUEL CELLS, METHOD FOR MANUFACTURING THE SAME, AND FUEL CELL USING THE SAME
    Publication number: 20120321990
    Abstract: Provided is an electrolyte membrane for solid oxide fuel cells. The electrolyte membrane for solid oxide fuel cells includes two or more deposited layers, wherein each of the deposited layers independently has an average crystal grain size of 5-100 nm and the deposited layers are different from each other in the average crystal grain.
    Type: Application
    Filed: August 23, 2011
    Publication date: December 20, 2012
    Applicants: XFC INC., SNU R&DB FOUNDATION
    Inventors: Ik Whang Chang, Young Seok Jee, Sang Hoon Ji, Yoon Ho Lee, Suk-Won Cha, Ju-Hyung Lee
  • Method of operating a flash memory device
    Patent number: 8335118
    Abstract: A flash memory device is disclosed. The flash memory device includes a memory cell array configured to have memory cells for storing data, and store initial data in a part of the memory cells, a page buffer circuit configured to have page buffers for providing data to be programmed in the memory cell or reading data from the memory cell, a controller configured to control the page buffer circuit so that the initial data stored in the memory cell array are read when operation of the flash memory device is started, discriminate error of the read initial data, and amend the error of the initial data, and an initial data latching circuit for latching the initial data of which the error is amended by the controller.
    Type: Grant
    Filed: March 22, 2010
    Date of Patent: December 18, 2012
    Assignee: Hynix Semiconductor Inc.
    Inventors: Jae Won Cha, Sam Kyu Won, Kwang Ho Baek
  • SUBSTRATE BONDING SYSTEM AND MOBILE CHAMBER USED THERETO
    Publication number: 20120298306
    Abstract: A substrate attachment system, including a portable chamber for receiving a pair of substrates which are aligned; a conveyor transportation device which continuously moves the portable chamber and to which a vacuum generator that is connected to a vacuum port of the portable chamber to evacuate the inside of the portable chamber is provided; and a heating device for performing a heating process in which the aligned substrates are attached to each other in the portable chamber, wherein the conveyor transportation device is arranged to pass through the heating device. The substrate attachment system may contribute to high attachment accuracy, and also, since the size of a chamber is reduced, a spatial utilization rate may be high, and also, since an attachment process is continuously performed by using a conveyor transportation device, a process time may be reduced.
    Type: Application
    Filed: November 26, 2010
    Publication date: November 29, 2012
    Applicant: LTRIN. CO., LTD
    Inventors: Yong-Won Cha, Sang Wook Yoo, Gun-Woo Park, Seung-Hee Jung
  • SEMICONDUCTOR MEMORY DEVICE AND METHOD OF READING OUT THE SAME
    Publication number: 20120269007
    Abstract: A semiconductor memory device includes a memory cell array configured to include memory cells, peripheral circuits configured to read out data stored in a selected memory cell in a read operation, and a controller configured to control the peripheral circuits so that the peripheral circuits sense a voltage level of the bit line when a first read voltage of the read voltages is supplied to the word line and the peripheral circuits sense voltage levels of the bit line when a second read voltage lower than the first read voltage by a specific level and a third read voltage higher than the first read voltage by the specific level are supplied to the word line in order to determine whether a threshold voltage of the selected memory cell falls within a set voltage distribution in the read operation.
    Type: Application
    Filed: April 19, 2012
    Publication date: October 25, 2012
    Applicant: HYNIX SEMICONDUCTOR INC.
    Inventors: In Gon YANG, Duck Ju KIM, Jae Won CHA, Sung Hoon AHN, Tae Ho JEON
  • APPARATUS AND METHOD FOR GENERATING STORY ACCORDING TO USER INFORMATION
    Publication number: 20120254255
    Abstract: An apparatus and method summarize a user's daily life information. The apparatus includes an information collection unit, an analysis unit, a story generator, and a display unit. The information collection unit collects log information including user's daily life information, from at least one electronic device. The analysis unit analyzes the log information collected from the information collection unit and decides at least one topic representing the user's daily life information. The story generator generates at least one sentence representing the user's daily life information using the at least one topic decided in the analysis unit. The display unit displays the at least one sentence generated in the story generator.
    Type: Application
    Filed: March 30, 2012
    Publication date: October 4, 2012
    Applicants: CHANGWON NATIONAL UNIVERSITY, SAMSUNG ELECTRONIC CO., LTD.
    Inventors: Hee-Seok Jeong, Young-Hee Park, Jeong-Won Cha
  • Wafer cleaning method and wafer bonding method using the same
    Patent number: 8278186
    Abstract: The present invention relates to a wafer cleaning and a wafer bonding method using the same that can improve a yield of cleaning process and bonding property in bonding the cleaned wafer by cleaning the wafer using atmospheric pressure plasma and cleaning solution. The wafer cleaning method includes the steps of providing a process chamber with a wafer whose bonding surface faces upward, cleaning and surface-treating the bonding surface of the wafer by supplying atmospheric pressure plasma and a cleaning solution to the bonding surface of the wafer, and withdrawing out the wafer from the process chamber.
    Type: Grant
    Filed: October 31, 2007
    Date of Patent: October 2, 2012
    Assignee: Ltrin Co., Ltd.
    Inventors: Yong Won Cha, Dong Chul Kim
  • Semiconductor memory device and erase method in the same
    Patent number: 8218368
    Abstract: A semiconductor memory device and an erase method in the same are disclosed. The semiconductor memory device includes a memory cell array configured to have a cell string in which memory cells are coupled, a block switch configured to switch a global word line and a word line of the memory cell array, a block decoder configured to control the block switch, and a recycle switch configured to use an erase voltage charged in a P-well of the memory cell array as a supply voltage of the block decoder.
    Type: Grant
    Filed: August 30, 2010
    Date of Patent: July 10, 2012
    Assignee: Hynix Semiconductor Inc.
    Inventors: Sam Kyu Won, Jae Won Cha, In Ho Kang, Kwang Ho Baek
  • Assessment of a user reputation and a content reliability
    Patent number: 8176057
    Abstract: A method and system for assessing a user reputation and/or a content reliability on contents sharing web sites is provided. In one embodiment, the method includes defining a networked association between users based on social activity information related to the users' social activities on a contents sharing web site, the users' social activities including social activities between the users and/or social activities of the users on the contents sharing web site; obtaining a link relation for at least one of the users based on the networked association; and computing a user reputation for the at least one of the users based on the link relation. The method may further include computing a content reliability of the at least one user-created contents based on the computed user reputation.
    Type: Grant
    Filed: October 22, 2009
    Date of Patent: May 8, 2012
    Assignee: Korea Institute of Science and Technology
    Inventors: Laehyun Kim, Yo-Sub Han, Hyunchul Cho, Jeong Won Cha, Lisa Wiyartanti
  • FUEL CELL SYSTEM USING HYDROGEN FROM ELECTROLYZER OF SEA WATER
    Publication number: 20120100444
    Abstract: Provided is a fuel cell system using waste hydrogen generated from a sea water electrolyzing apparatus, the fuel cell system including: a sea water electrolyzing apparatus carrying out electrolysis of sea water used as cooling water in a nuclear power generation system to produce a chlorine-containing material; a hydrogen conveying line linked to one side of the sea water electrolyzing apparatus to convey waste hydrogen generated during the electrolysis; and a fuel cell linked to the hydrogen conveying line to generate electricity by using the waste hydrogen supplied from the hydrogen conveying line as fuel. The fuel cell system generates electricity by using waste hydrogen, which, otherwise, is totally discarded after being generated secondarily from the sea water electrolyzing apparatus, as fuel for the fuel cell.
    Type: Application
    Filed: October 5, 2011
    Publication date: April 26, 2012
    Applicant: XFC INC.
    Inventors: Ju-Hyung Lee, Jong Won Choi, Suk-Won Cha, Ik Whang Chang