Patents by Inventor Hwan JI

Hwan JI 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: 9355591
    Abstract: An organic light emitting diode (OLED) display and a method of compensating for degradation are disclosed. One inventive aspect includes a panel assembly including a plurality of pixels. Luminance measuring units are formed along a perimeter of the panel assembly to measure luminance of light emitted from the pixels. A processing unit compares the measured luminance data so as to detect and also compensate for a degraded pixel.
    Type: Grant
    Filed: April 30, 2014
    Date of Patent: May 31, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Ji-Hye Eom, Baek-Woon Lee, In-Hwan Ji
  • Patent number: 9351238
    Abstract: A method of offloading wireless data in a core network using a femtocell which can reduce a traffic load of a mobile communication network and maximize convenience of a user by determining to offload the wireless data passing through the core network onto a local network according to whether the data is real-time data is provided.
    Type: Grant
    Filed: January 20, 2015
    Date of Patent: May 24, 2016
    Assignee: INNOWIRELESS CO., LTD.
    Inventors: Jin Soup Joung, Seung Hwan Ji, Hyun Seok Lee, Woong Jong Jeong
  • Patent number: 9275722
    Abstract: A memory device include a memory array, a transmitter suitable for outputting data to the outside of the memory device, and a data bus suitable for transmitting data of a selected memory cell in the memory array to the transmitter during a read operation. When successive read commands for the same memory cell are applied, data transmission from the memory array to the data bus is blocked, and data previously loaded in the data bus is outputted through the transmitter.
    Type: Grant
    Filed: December 16, 2013
    Date of Patent: March 1, 2016
    Assignee: SK Hynix Inc.
    Inventors: Jung-Hwan Ji, Ki-Chon Park, Jin-Youp Cha, Jin-Hee Cho
  • Publication number: 20160044590
    Abstract: A method of offloading wireless data in a core network using a femtocell which can reduce a traffic load of a mobile communication network and maximize convenience of a user by determining to offload the wireless data passing through the core network onto a local network according to whether the data is real-time data is provided.
    Type: Application
    Filed: January 20, 2015
    Publication date: February 11, 2016
    Inventors: Jin Soup Joung, Seung Hwan Ji, Hyun Seok Lee, Woong Jong Jeong
  • Publication number: 20160044562
    Abstract: A method of switching a connection to a femtocell and a WiFi access point (AP) in software defined networking (SDN) capable of minimizing inconvenience of use by automatically switching a connection to a mobile communication network including the femtocell and a WiFi network connected to the SDN without disconnection of a data service in a state that a user does not recognize is provided.
    Type: Application
    Filed: January 20, 2015
    Publication date: February 11, 2016
    Inventors: Jin Soup Joung, Seung Hwan Ji, Hyun Seok Lee, Woong Jong Jeong, Jung Hoon Seo
  • Patent number: 9204366
    Abstract: A flexible connection control femtocell access point device of a small cell and a method of driving the same are provided. A maximum system load is used and network efficiency is maximized by calculating a system load occurring when a mobile station is newly connected according to the type of services that user equipments, that is, mobile stations, in a small cell, such as a femtocell, desire to use, comparing the calculated system load and the maximum system load, and determining whether to limit connection of the mobile station.
    Type: Grant
    Filed: March 17, 2014
    Date of Patent: December 1, 2015
    Assignee: INNOWIRELESS CO., LTD.
    Inventors: Jin-Soup Joung, Seung-Hwan Ji, Beom-Sik Kim, Sang-Ik Cho
  • Publication number: 20150301704
    Abstract: Provided is a method of providing the play order and add-on of e-book. The method of providing a play order and add-on of an e-book, which is executed in a viewer for playing an e-book that is a digital work described according to a certain order, include: playing an e-book in accordance with a provided play order information regardless of the order of the e-book itself as the viewer is provided with the play order information.
    Type: Application
    Filed: October 8, 2013
    Publication date: October 22, 2015
    Inventors: Seung Hwan Ji, Jung Jin KOOK
  • Publication number: 20150208323
    Abstract: A flexible connection control femtocell access point device of a small cell and a method of driving the same are provided. A maximum system load is used and network efficiency is maximized by calculating a system load occurring when a mobile station is newly connected according to the type of services that user equipments, that is, mobile stations, in a small cell, such as a femtocell, desire to use, comparing the calculated system load and the maximum system load, and determining whether to limit connection of the mobile station.
    Type: Application
    Filed: March 17, 2014
    Publication date: July 23, 2015
    Applicant: INNOWIRELESS CO., LTD
    Inventors: Jin-Soup JOUNG, Seung-Hwan JI, Beom-Sik KIM, Sang-Ik CHO
  • Patent number: 9081515
    Abstract: A clock generation circuit includes a counting code generation unit configured to generate counting codes corresponding to a frequency of an input clock when an enable signal is enabled; a control code generation unit configured to decode the counting codes and generate control codes; and a cycle changeable oscillation unit configured to determine a frequency of an output clock in response to the control codes.
    Type: Grant
    Filed: March 18, 2013
    Date of Patent: July 14, 2015
    Assignee: SK Hynix Inc.
    Inventors: Jung Hwan Ji, Geun Il Lee
  • Publication number: 20150185986
    Abstract: Provided is a method for integrally providing electronic books. Two or more electronic books can be organically integrated by determining the relation of list items of two or more electronic books using a pre-constructed knowledge system and creating an integrated list based thereon. Thus, a learner can read two or more electronic books without a sense of difference as if the books were a single copy from the beginning, and can save time and effort which are unnecessarily wasted upon learning while comparing books which have similar contents and subjects.
    Type: Application
    Filed: August 5, 2013
    Publication date: July 2, 2015
    Inventor: Seung Hwan Ji
  • Publication number: 20150129959
    Abstract: A semiconductor device includes a substrate comprising a WELL region, a gate electrode comprising a gate length disposed on the WELL region, and first and second drift regions which overlap with the gate electrode. The first and second draft regions may overlap with the gate electrode at an overlapping length which is a percentage of the gate length.
    Type: Application
    Filed: May 23, 2014
    Publication date: May 14, 2015
    Applicant: MAGNACHIP SEMICONDUCTOR, LTD.
    Inventors: Hee Hwan JI, Tae Ho KIM
  • Publication number: 20150127884
    Abstract: A memory device include a memory array, a transmitter suitable for outputting data to the outside of the memory device, and a data bus suitable for transmitting data of a selected memory cell in the memory array to the transmitter during a read operation. When successive read commands for the same memory cell are applied, data transmission from the memory array to the data bus is blocked, and data previously loaded in the data bus is outputted through the transmitter.
    Type: Application
    Filed: December 16, 2013
    Publication date: May 7, 2015
    Applicant: SK hynix Inc.
    Inventors: Jung-Hwan JI, Ki-Chon PARK, Jin-Youp CHA, Jin-Hee CHO
  • Patent number: 9001105
    Abstract: An organic light emitting display includes a display unit including pixels coupled to scan lines, first control lines, second control lines, and data lines, a control line driver configured to supply a first control signal and a second control signal to the pixels through the first control lines and the second control lines, a first power source driver for applying a first power to the pixels of the display unit, and a second power source driver for applying a second power to the pixels of the display unit. At least one of the first power or the second power is applied to the pixels of the display unit as voltage values having different levels during one frame. The first and second control signals and the first and second powers are concurrently provided to all of the pixels of the display unit.
    Type: Grant
    Filed: November 3, 2010
    Date of Patent: April 7, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sang-Myeon Han, Baek-Woon Lee, Si-Duk Sung, In-Hwan Ji
  • Publication number: 20150092664
    Abstract: Provided is a long term evolution (LTE) femtocell based content service system and a driving method thereof, which include user equipment (UE) connected to an evolved packet core (EPC) network that is a core network through routes, that is, a radio network subsystem (RNS) and a home eNode subsystem (HeNS) having a femtocell and a content service server connected to the EPC network and configured to receive system information including PCI, U_DL BW, Cell ID, TAC, HeNB Name and SNR, and query data from the user equipment (UE), retrieve corresponding content with reference to the received system information and query data, and provide the corresponding content to the user equipment (UE).
    Type: Application
    Filed: September 26, 2014
    Publication date: April 2, 2015
    Inventors: Jin Soup Joung, Seung-Hwan Ji, Hong Gil Kim
  • Publication number: 20150053595
    Abstract: Provided is an apparatus for inspecting a magazine including a plurality of partially-finished products. The apparatus is configured to inspect a stopper of the magazine before providing the magazine to a packaging process, and further configured to classify the stopper into a normal product. The magazine comprising the stopper classified as the normal product is into the packaging process.
    Type: Application
    Filed: August 20, 2014
    Publication date: February 26, 2015
    Inventors: Chang-hwan Ji, Jung-hun Choi, Sung-yeol Lee, Hee-sang Yang, Jae-nam Lee
  • Publication number: 20140320553
    Abstract: An organic light emitting diode (OLED) display and a method of compensating for degradation are disclosed. One inventive aspect includes a panel assembly including a plurality of pixels. Luminance measuring units are formed along a perimeter of the panel assembly to measure luminance of light emitted from the pixels. A processing unit compares the measured luminance data so as to detect and also compensate for a degraded pixel.
    Type: Application
    Filed: April 30, 2014
    Publication date: October 30, 2014
    Applicant: Samsung Display Co., Ltd.
    Inventors: Ji-Hye Eom, Baek-Woon Lee, In-Hwan JI
  • Patent number: 8854905
    Abstract: A semiconductor device may include an internal circuit configured to perform write operations in response to each of a plurality of write commands, wherein the plurality of write commands are sequentially input to the internal circuit, a first pulse generation unit configured to generate a first pulse activated during a first delay amount in response to a write command, a second pulse generation unit configured to generate a second pulse activated during the first delay amount in response to a delayed write command out of the plurality of write commands after a second delay amount from the activation time of the first pulse, and a transfer control unit configured to prevent commands other than the plurality of write commands from being transferred to the internal circuit during a sum of the activation period of the first pulse and the activation period of the second pulse.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: October 7, 2014
    Assignee: SK Hynix Inc.
    Inventors: Jung-Hwan Ji, Geun-Il Lee
  • Publication number: 20140176209
    Abstract: A clock generation circuit includes a counting code generation unit configured to generate counting codes corresponding to a frequency of an input clock when an enable signal is enabled; a control code generation unit configured to decode the counting codes and generate control codes; and a cycle changeable oscillation unit configured to determine a frequency of an output clock in response to the control codes.
    Type: Application
    Filed: March 18, 2013
    Publication date: June 26, 2014
    Applicant: SK HYNIX INC.
    Inventors: Jung Hwan JI, Geun Il LEE
  • Publication number: 20140063991
    Abstract: A semiconductor device may include an internal circuit configured to perform write operations in response to each of a plurality of write commands, wherein the plurality of write commands are sequentially input to the internal circuit, a first pulse generation unit configured to generate a first pulse activated during a first delay amount in response to a write command, a second pulse generation unit configured to generate a second pulse activated during the first delay amount in response to a delayed write command out of the plurality of write commands after a second delay amount from the activation time of the first pulse, and a transfer control unit configured to prevent commands other than the plurality of write commands from being transferred to the internal circuit during a sum of the activation period of the first pulse and the activation period of the second pulse.
    Type: Application
    Filed: March 14, 2013
    Publication date: March 6, 2014
    Applicant: SK HYNIX INC.
    Inventors: Jung-Hwan JI, Geun-Il LEE
  • Patent number: 8599187
    Abstract: An organic light-emitting display device that increases long range uniformity (LRU). The organic light-emitting display device includes an image display unit including a plurality of pixels defined by a plurality of scan lines and a plurality of data lines, a plurality of film type connection devices electrically connected to the image display unit and at least one DC-DC converter arranged on the plurality of film type connection devices to supply driving voltages to the image display unit.
    Type: Grant
    Filed: December 29, 2010
    Date of Patent: December 3, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Si-Duk Sung, In-Hwan Ji