Patents by Inventor Jung-Hwan Choi

Jung-Hwan 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).

  • Server cluster and method for push notification service
    Patent number: 9210231
    Abstract: A server cluster and method for providing a push notification service are provided. The method includes searching for, by a management server cluster, a first push server corresponding to predetermined search criteria from among a plurality of push servers upon receiving a request to connect with a push server from a mobile terminal; providing, by the management server cluster, connection information regarding the found first push server to the mobile terminal; and delivering, by the first push server, upon generation of a notification event after connecting with the mobile terminal, event information corresponding to the push notification event to the connected mobile terminal.
    Type: Grant
    Filed: April 6, 2012
    Date of Patent: December 8, 2015
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Ka-Ram Ko, Hee Seo, Jung-Hwan Choi, In-Gyu Kim
  • INPUT/OUTPUT INTERFACE
    Publication number: 20150339255
    Abstract: A method of operating an input/output interface includes selecting one of a plurality of output driver circuits according to a mode selection signal, and outputting a data signal using the selected one of the plurality of output driver circuits. Another method of operating an includes generating a mode selection signal based on a received command signal, and controlling an on-die termination (ODT) circuit included in the input/output interface according to the mode selection signal. Another method of operating an includes generating a mode selection signal based on a received command signal, and controlling an ODT circuit included in the input/output interface according to the mode selection signal.
    Type: Application
    Filed: August 5, 2015
    Publication date: November 26, 2015
    Inventors: Young Chul CHO, Jung Bae LEE, Jung Hwan CHOI
  • DISPLAY DEVICE AND CONTROL METHOD THEREFOR
    Publication number: 20150325211
    Abstract: A method for controlling a display device comprising a touch screen is provided. The control method displaying, on the touch screen, a plurality of windows that do not overlap one another and that respectively correspond to executing, displaying a center button disposed at an intersection of a plurality of dividing lines that distinguishes the plurality of windows, receiving an input of a window size change command for changing a size of at least one of the plurality of windows, changing the size of at least one of the plurality of windows in response to the window size change command, and discontinuing the displaying of less than all of the plurality of windows and enlarging a size of at least one remaining window.
    Type: Application
    Filed: December 6, 2013
    Publication date: November 12, 2015
    Inventors: Seung-Woon LEE, Kang-Tae KIM, Young-Jin KIM, Dae-Wook PARK, Jung-Hwan CHOI
  • DISPLAY DEVICE AND METHOD OF CONTROLLING THE SAME
    Publication number: 20150317026
    Abstract: A method of controlling a display device including a touch screen is provided. The method includes displaying, on the touch screen, a plurality of windows respectively corresponding to executing applications, such that the windows do not overlap each other, displaying a plurality of boundary lines differentiating the plurality of windows, and a center button disposed at an intersection point of the plurality of boundary lines, receiving, through the touch screen, an input of a window size change command to change a size of at least one of the plurality of windows, and resizing and displaying at least one of the plurality of windows in correspondence to the window size change command.
    Type: Application
    Filed: December 5, 2013
    Publication date: November 5, 2015
    Inventors: Jung-Hwan CHOI, Kang-Tae KIM, Young-Jin KIM, Dae-Wook PARK, Seung-Woon LEE
  • Operating method of input/output interface
    Patent number: 9130557
    Abstract: A method of operating an input/output interface includes selecting one of a plurality of output driver circuits according to a mode selection signal, and outputting a data signal using the selected one of the plurality of output driver circuits. Another method of operating an includes generating a mode selection signal based on a received command signal, and controlling an on-die termination (ODT) circuit included in the input/output interface according to the mode selection signal. Another method of operating an includes generating a mode selection signal based on a received command signal, and controlling an ODT circuit included in the input/output interface according to the mode selection signal.
    Type: Grant
    Filed: December 2, 2013
    Date of Patent: September 8, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Young Chul Cho, Jung Bae Lee, Jung Hwan Choi
  • Stacked die package, system including the same, and method of manufacturing the same
    Patent number: 9123630
    Abstract: A stacked die package includes a package substrate, a first die mounted on the package substrate and electrically connected to the package substrate, a second die electrically connected to the package substrate, and an interposer mounted on the package substrate and including a plurality of vertical electrical connection means electrically connecting the package substrate to the second die. At least part of the first die is disposed between the second die and the package substrate in a vertical direction.
    Type: Grant
    Filed: December 3, 2013
    Date of Patent: September 1, 2015
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jeong Kyoum Kim, Jung Hwan Choi
  • APPARATUS AND METHOD OF DISPLAYING WINDOWS
    Publication number: 20150220215
    Abstract: A method of displaying windows is provided. The method includes displaying at least two windows, displaying at least one center button disposed at at least one boundary between the at least two displayed windows, determining a window of which the size is to be changed according to a movement direction of the at least one center button, and changing a size of the determined window according to movement of the at least one center button and displaying the determined window having the changed size, wherein the determined window is overlaid on the at least two displayed windows, and wherein a size of the determined window is changed according to movement of the at least one center button.
    Type: Application
    Filed: December 31, 2014
    Publication date: August 6, 2015
    Inventors: Jung-hwan CHOI, Young-jin KIM, Kang-tae KIM
  • Antenna device
    Patent number: 9099768
    Abstract: An antenna device includes: a feeding rod unit connected to a feeding unit, in which a radio signal is applied to be sent and received to the feeding unit; an end rod unit, disposed at the end of the antenna device, and spaced apart from the feeding rod unit; at least one intermediate rod unit, interposed between the feeding rod unit and the end rod unit; a first helical unit, interposed between the feeding rod unit and the at least one intermediate rod unit; and a second helical unit, interposed between the intermediate rod unit and the end rod unit.
    Type: Grant
    Filed: August 24, 2012
    Date of Patent: August 4, 2015
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Seung-gil Jeon, Joong-hee Lee, Tae-sik Yang, Jae-young Chung, Jung-hwan Choi
  • MEMORY SYSTEM AND COMPUTING SYSTEM
    Publication number: 20150185812
    Abstract: A memory system includes a memory controller and a memory device. The memory device includes a first converter and a first power controller. The memory device is connected to the memory controller through a channel including at least one optical signal line. The first converter converts between at least one optical signal of the at least one optical signal line and at least one internal electrical signal of the memory device. The first power controller controls power consumption of the first converter based on an operating state of the memory device.
    Type: Application
    Filed: December 4, 2014
    Publication date: July 2, 2015
    Inventors: Seok-Hun Hyun, Jeong-Kyoum Kim, In-Dal Song, In-Sung Joe, Jung-Hwan Choi, Hyun-II Byun, Yong-Won Jung
  • MULTIPLE-OUTPUT DC/DC CONVERTER AND POWER SUPPLY HAVING THE SAME
    Publication number: 20150171757
    Abstract: Disclosed are a multiple-output DC/DC converter and a power supply having the same. The multiple-output DC/DC converter includes a converter including a transformer and a first surge absorbing module, wherein the transformer includes a first switch provided to a primary side and outputs a first voltage to a secondary side, and the first surge absorbing module is connected to the primary side of the transformer and absorbs a surge voltage formed at the first switch by a leakage inductance of the transformer; and a first energy converting module to receive output energy supplied from the first surge absorbing module and output a second voltage.
    Type: Application
    Filed: December 15, 2014
    Publication date: June 18, 2015
    Inventors: Chunfeng JIN, Dong Young Huh, Jae Sam Lee, Hyun Woo Lee, Jung Hwan Choi
  • OPTICAL TRANSMISSION COVERTER, MEMORY SYSTEM COMPRISING SAME, AND RELATED METHOD OF OPERATION
    Publication number: 20150147068
    Abstract: An optical transmission converter comprises a wavelength selector configured to output a reception wavelength selection signal and a transmission wavelength selection signal in response to a wavelength control signal, an opto-electrical converter configured to convert a selection optical signal into a reception electrical signal based on a reception optical signal from a host device and the reception wavelength selection signal, and an electro-optical converter configured to convert a transmission electrical signal into a transmission optical signal based on the transmission wavelength selection signal and the transmission electrical signal.
    Type: Application
    Filed: November 25, 2014
    Publication date: May 28, 2015
    Inventors: JEONG-KYOUM KIM, SEOK-HUN HYUN, IN-DAL SONG, SEONG-JIN JANG, JUNG-HWAN CHOI
  • Method for operating memory device and apparatuses performing the method
    Patent number: 8988101
    Abstract: According to example embodiments, a method for operating a memory device includes receiving an on-die termination (ODT) signal through an ODT pin, and issuing a command or controlling an ODT circuit according to the ODT signal.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: March 24, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: In Dal Song, Jung Hwan Choi, Yun Seok Yang
  • METHOD OF OPERATING MEMORY DEVICE AND METHODS OF WRITING AND READING DATA IN MEMORY DEVICE
    Publication number: 20150067448
    Abstract: In a method of operating a memory device, a command and a first address from a memory controller are received. A read code word including a first set of data corresponding to the first address, a second set of data corresponding to a second address and a read parity data is read from a memory cell array of the memory device. Corrected data are generated by operating error checking and correction (ECC) using an ECC circuit based on the read cord word.
    Type: Application
    Filed: June 16, 2014
    Publication date: March 5, 2015
    Inventors: Jong-Pil SON, Young-Soo SOHN, Uk-Song KANG, Chul-Woo PARK, Jung-Hwan CHOI, Won-Il BAE, Kyo-Min SOHN
  • Driving a light scanner
    Patent number: 8941627
    Abstract: Driving a light scanner at a resonant frequency of the light scanner using a phase delay compensated driving signal.
    Type: Grant
    Filed: April 10, 2009
    Date of Patent: January 27, 2015
    Assignee: LG Electronics Inc.
    Inventors: Jung Hwan Choi, Jung Hoon Seo, Suhwan Kim, Jae Wook Kwon, Jae Sung Kim
  • Source driver circuit of liquid crystal display device
    Patent number: 8913048
    Abstract: Provided is a technology for preventing noisy data from being displayed before valid data is inputted when power is turned on in a liquid crystal display.
    Type: Grant
    Filed: March 12, 2010
    Date of Patent: December 16, 2014
    Assignee: Silicon Works Co., Ltd.
    Inventors: Hun Yong Lim, Jung Hwan Choi, An Young Kim, Joon Ho Na, Dae Seong Kim, Dae Keun Han
  • CLOCK SYNCHRONIZATION CIRCUIT AND SEMICONDUCTOR MEMORY DEVICE INCLUDING CLOCK SYNCHRONIZATION CIRCUIT
    Publication number: 20140313847
    Abstract: A clock synchronization circuit includes a delay-locked loop (DLL) and a delay-locked control unit. The DLL is configured to generate an output clock signal by delaying an input clock signal by a delay time, and to execute a delay-locking operation in which the delay time is adjusted to a locked state according to a comparison between the output clock signal and the input clock signal.
    Type: Application
    Filed: April 11, 2014
    Publication date: October 23, 2014
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: SEONG-HWAN JEONG, YANG-KI KIM, SEOK-HUN HYUN, JUNG-HWAN CHOI
  • Transmission unit adopting a differential voltage driving system, transmission unit and receiving unit selectively adopting a differential current driving system, differential voltage driving system, and interface system
    Patent number: 8842745
    Abstract: In the transmitter, receiver and interface system capable of selective adoption of a differential current driving scheme and a differential voltage driving scheme, a differential current driving scheme and a differential voltage driving scheme can be selectively adopted in one semiconductor chip depending upon the states of the transmission lines, so that effective data transmission is possible and common parts can be shared, whereby a design time can be shortened and a layout area can be reduced.
    Type: Grant
    Filed: December 3, 2009
    Date of Patent: September 23, 2014
    Assignee: Silicon Works Co., Ltd.
    Inventors: Ju-Pyo Hong, Jun-Ho Kim, Jung-Hwan Choi
  • ELECTRO-PHOTONIC MEMORY SYSTEM
    Publication number: 20140270785
    Abstract: An electro-photonic memory system includes a semiconductor memory device for storing data by receiving a first electrical signal, a memory controller for generating a second electrical signal to control the semiconductor memory device, an electrical-to-optical converter for receiving the second electrical signal from the memory controller and converting the second electrical signal into an optical signal, the electrical-to-optical converter separate from the memory controller, and an optical-to-electrical converter for receiving the optical signal from the electrical-to-optical converter and converting the optical signal into the first electrical signal.
    Type: Application
    Filed: February 28, 2014
    Publication date: September 18, 2014
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Jeong-kyoum KIM, Jung-hwan CHOI, In-dal SONG
  • Semiconductor device, controller associated therewith, system including the same, and methods of operation
    Patent number: 8832391
    Abstract: In one embodiment, the semiconductor device includes a data control unit configured to selectively process data for writing to a memory. The data control unit is configured to enable a processing function from a group of processing functions based on a mode register command during a write operation, the group of processing functions including at least three processing functions. The enabled processing function may be performed based on a signal received over a single pin associated with the group of processing functions. In another embodiment, the semiconductor device includes a data control unit configured to process data read from a memory. The data control unit is configured to enable a processing function from a group of processing functions based on a mode register command during a read operation. Here, the group of processing functions including at least two processing functions.
    Type: Grant
    Filed: November 15, 2010
    Date of Patent: September 9, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Jung-Hwan Choi
  • Cooperation method and system between send mechanism and IPSec protocol in IPV6 environment
    Patent number: 8819790
    Abstract: The present invention relates to a method of embodying a cooperation system between SEND and IPSec in an IPv6 environment. The cooperation system between SEND and IPSec in accordance with the present invention includes: receiving an authentication completion report message including a first IP address of a host whose authentication is completed by the SEND; generating new authentication information corresponding to the host and storing the new authentication information in a temporary storage area, if authentication information for the host is not present in the temporary storage area, wherein the authentication information includes the first IP address; and if an authentication check request message including a second IP address is received from the IPSec, checking whether the second IP address is present in the temporary storage area, and sending the result of checking to the IPSec.
    Type: Grant
    Filed: February 29, 2008
    Date of Patent: August 26, 2014
    Assignee: Sungkyunkwan University Foundation for Corporate Collaboration
    Inventors: Young-Ik Eom, Kwang-Sun Ko, Hyun-Su Jang, Hyun-jin Cho, Yong-Woo Jung, Hyun-Woo Choi, Gye-Hyeon Gyeong, Jung-Hwan Choi, Zhen Zhao, Tae-Hyoung Kim, Youn-Woo Kim