Patents by Inventor Hong-Sok Choi

Hong-Sok 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).

  • Patent number: 9310430
    Abstract: A semiconductor integrated circuit includes a decoding circuit configured to decode one or more test source signals and generate a plurality of test decoding signals, a transmission circuit configured to transmit the plurality of test decoding signals as a plurality of test mode group signals in response to a test enable signal, wherein the transmission circuit outputs the test mode group signals with maintaining a previous output, when the test decoding signals different from each other are sequentially activated, and a test mode signal output circuit configured to output a plurality of test mode signals corresponding to test mode groups, respectively, in response to the plurality of test mode group signals and one or more test mode select signals.
    Type: Grant
    Filed: April 12, 2012
    Date of Patent: April 12, 2016
    Assignee: Hynix Semiconductor Inc.
    Inventor: Hong-Sok Choi
  • Patent number: 9036403
    Abstract: The semiconductor memory device includes a cell capacitor having a first terminal electrically connected to a storage node and a second terminal electrically connected to an internal node, an internal voltage generator configured to generate an internal voltage signal applied to the internal node in response to a power-up signal, and an initialization element configured to initialize the internal node in response to the power-up signal.
    Type: Grant
    Filed: December 18, 2012
    Date of Patent: May 19, 2015
    Assignee: SK hynix Inc.
    Inventor: Hong Sok Choi
  • Patent number: 8786302
    Abstract: A test circuit that senses a misaligned probe during a test includes a first power control section that senses voltage levels of a plurality of sensing lines and controls power supplied to a lower circuit section provided below a part of a pad group, and a second power control section that selectively provides an internal voltage in response to a sensing result of the first power control section.
    Type: Grant
    Filed: June 13, 2011
    Date of Patent: July 22, 2014
    Assignee: SK hynix Inc.
    Inventor: Hong-Sok Choi
  • Publication number: 20140050016
    Abstract: Semiconductor memory devices are described. The semiconductor memory device includes a cell capacitor having a first terminal electrically connected to a storage node and a second terminal electrically connected to an internal node, an internal voltage generator configured to generate an internal voltage signal applied to the internal node in response to a power-up signal, and an initialization element configured to initialize the internal node in response to the power-up signal.
    Type: Application
    Filed: December 18, 2012
    Publication date: February 20, 2014
    Applicant: SK hynix Inc.
    Inventor: Hong Sok CHOI
  • Patent number: 8627134
    Abstract: A local skew detecting circuit for a semiconductor apparatus include a reference delay block located on the center of the semiconductor apparatus, the reference delay block being configured to receive a predetermined signal and generate a reference delay signal by delaying the predetermined signal by a delay time and a first timing detecting block located on one edge of the semiconductor apparatus, the first timing detecting block being configured to receive the predetermined signal, generate a first delay signal by delaying the predetermined signal by the delay time, and detect an enable timing order of the reference delay signal and the first delay signal to generate a first detection signal.
    Type: Grant
    Filed: March 7, 2011
    Date of Patent: January 7, 2014
    Assignee: SK Hynix Inc.
    Inventor: Hong-Sok Choi
  • Publication number: 20130162274
    Abstract: A semiconductor integrated circuit includes a decoding circuit configured to decode one or more test source signals and generate a plurality of test decoding signals, a transmission circuit configured to transmit the plurality of test decoding signals as a plurality of test mode group signals in response to a test enable signal, wherein the transmission circuit outputs the test mode group signals with maintaining a previous output, when the test decoding signals different from each other are sequentially activated, and a test mode signal output circuit configured to output a plurality of test mode signals corresponding to test mode groups, respectively, in response to the plurality of test mode group signals and one or more test mode select signals.
    Type: Application
    Filed: April 12, 2012
    Publication date: June 27, 2013
    Inventor: Hong-Sok CHOI
  • Patent number: 8300485
    Abstract: A sense amplifier is configured to transfer data on a first data I/O line to a second data I/O line or to transfer data on the second data I/O line to the first data I/O line. The first data I/O line is substantially continuously coupled to the second data I/O line during an active operation.
    Type: Grant
    Filed: December 7, 2010
    Date of Patent: October 30, 2012
    Assignee: SK Hynix Inc.
    Inventors: Kyu Nam Lim, Hong Sok Choi, Ki Myung Kyung, Mun Phil Park, Sun Hwa Park
  • Publication number: 20120126874
    Abstract: An integrated circuit includes a transfer unit configured to transfer an input signal having a first swing width between a first voltage and a second voltage, a driving unit configured to drive an output terminal to output an output signal having a second swing width in response to the input signal transferred from the transfer unit, and a control unit configured to control the driving unit in response to the output signal.
    Type: Application
    Filed: December 29, 2010
    Publication date: May 24, 2012
    Inventor: Hong-Sok CHOI
  • Patent number: 8102722
    Abstract: A data output device of a semiconductor memory apparatus includes detection means configured to detect a specified operation frequency range; pre-driving means configured to be inputted with signals; driving means configured to receive outputs of the pre-driving means and drive an output of data; and adjustment means configured to adjust a slew rate of the driving means under the control of an output signal of the detection means.
    Type: Grant
    Filed: June 30, 2009
    Date of Patent: January 24, 2012
    Assignee: Hynix Semiconductor Inc.
    Inventor: Hong-Sok Choi
  • Publication number: 20120005397
    Abstract: A sense amplifier is configured to transfer data on a first data I/O line to a second data I/O line or to transfer data on the second data I/O line to the first data I/O line. The first data I/O line is substantially continuously coupled to the second data I/O line during an active operation.
    Type: Application
    Filed: December 7, 2010
    Publication date: January 5, 2012
    Applicant: Hynix Semiconductor Inc.
    Inventors: Kyu Nam LIM, Hong Sok CHOI, Ki Myung KYUNG, Mun Phil PARK, Sun Hwa PARK
  • Publication number: 20120002491
    Abstract: A semiconductor memory apparatus includes a multi-bit test signal generating device configured to receive an address signal and generate a multi-bit test signal based on the address signal when a multi-bit test write operation is performed.
    Type: Application
    Filed: December 7, 2010
    Publication date: January 5, 2012
    Applicant: Hynix Semiconductor Inc.
    Inventor: Hong Sok CHOI
  • Publication number: 20110233548
    Abstract: A test circuit that senses a misaligned probe during a test includes a first power control section that senses voltage levels of a plurality of sensing lines and controls power supplied to a lower circuit section provided below a part of a pad group, and a second power control section that selectively provides an internal voltage in response to a sensing result of the first power control section.
    Type: Application
    Filed: June 13, 2011
    Publication date: September 29, 2011
    Applicant: HYNIX SEMICONDUCTOR, INC.
    Inventor: Hong Sok CHOI
  • Publication number: 20110148491
    Abstract: A local skew detecting circuit for a semiconductor apparatus include a reference delay block located on the center of the semiconductor apparatus, the reference delay block being configured to receive a predetermined signal and generate a reference delay signal by delaying the predetermined signal by a delay time and a first timing detecting block located on one edge of the semiconductor apparatus, the first timing detecting block being configured to receive the predetermined signal, generate a first delay signal by delaying the predetermined signal by the delay time, and detect an enable timing order of the reference delay signal and the first delay signal to generate a first detection signal.
    Type: Application
    Filed: March 7, 2011
    Publication date: June 23, 2011
    Inventor: Hong-Sok CHOI
  • Patent number: 7960994
    Abstract: A test circuit that senses a misaligned probe during a test includes a first power control section that senses voltage levels of a plurality of sensing lines and controls power supplied to a lower circuit section provided below a part of a pad group, and a second power control section that selectively provides an internal voltage in response to a sensing result of the first power control section.
    Type: Grant
    Filed: July 23, 2008
    Date of Patent: June 14, 2011
    Assignee: Hynix Semiconductor Inc.
    Inventor: Hong-Sok Choi
  • Patent number: 7956650
    Abstract: An input circuit is disclosed. The input circuit can include a cross voltage generating block that can be configured to perform charge-sharing on a pair of input signals whose phases are opposite to each other and generate a cross voltage, and an input buffer block that can be configured to buffer the pair of input signals at a voltage level corresponding to a voltage level of the cross voltage and generate an output signal.
    Type: Grant
    Filed: March 17, 2010
    Date of Patent: June 7, 2011
    Assignee: Hynix Semiconductor Inc.
    Inventor: Hong Sok Choi
  • Patent number: 7904742
    Abstract: A local skew detecting circuit for a semiconductor integrated circuit includes a reference delay block that receives a test signal and generates a reference delay signal by delaying the test signal by a predetermined delay time, and a first timing detecting block coupled with the reference delay block, the first timing detecting block configured to receive the test signal, generate a first delay signal by delaying the test signal by the same predetermined delay time, and detect an enable timing order of the reference delay signal and the first delay signal to generate a first detection signal.
    Type: Grant
    Filed: December 21, 2007
    Date of Patent: March 8, 2011
    Assignee: Hynix Semiconductor Inc.
    Inventor: Hong-Sok Choi
  • Patent number: 7898317
    Abstract: A circuit for generating negative voltage includes a variable period oscillator configured to generate an oscillator signal enabled in response to a detection signal and to determine a period of the oscillator signal in response to a control signal, a pump configured to perform pumping operations in response to the oscillator signal and to generate a negative voltage by the pumping operations, a negative voltage detecting unit configured to detect the level of the negative voltage to generate the detection signal, and a gate-induced drain leakage current detecting unit configured to measure the amount of a gate-induced drain leakage current to generate the control signal.
    Type: Grant
    Filed: December 31, 2008
    Date of Patent: March 1, 2011
    Assignee: Hynix Semiconductor Inc.
    Inventor: Hong-Sok Choi
  • Publication number: 20100244882
    Abstract: A method for performing a burn-in test of a metal wire for a signal transmission of a semiconductor device including driving a first terminal of the metal wire with a first voltage and forming a current path in the metal wire by driving a second terminal of the metal wire with a second voltage whose level is different from that of the first voltage.
    Type: Application
    Filed: June 17, 2009
    Publication date: September 30, 2010
    Inventor: Hong-Sok Choi
  • Publication number: 20100182051
    Abstract: An input circuit is disclosed. The input circuit can include a cross voltage generating block that can be configured to perform charge-sharing on a pair of input signals whose phases are opposite to each other and generate a cross voltage, and an input buffer block that can be configured to buffer the pair of input signals at a voltage level corresponding to a voltage level of the cross voltage and generate an output signal.
    Type: Application
    Filed: March 17, 2010
    Publication date: July 22, 2010
    Applicant: HYNIX SEMICONDUCTOR INC.
    Inventor: Hong Sok Choi
  • Publication number: 20100165751
    Abstract: A data output device of a semiconductor memory apparatus includes detection means configured to detect a specified operation frequency range; pre-driving means configured to be inputted with signals; driving means configured to receive outputs of the pre-driving means and drive an output of data; and adjustment means configured to adjust a slew rate of the driving means under the control of an output signal of the detection means.
    Type: Application
    Filed: June 30, 2009
    Publication date: July 1, 2010
    Inventor: Hong-Sok Choi