Patents by Inventor Yun-Ju Kwon

Yun-Ju Kwon 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: 9172380
    Abstract: A method and an apparatus for supporting a self-destruction function in a baseband modem are provided. Aspects of the present disclosure are to address at least the above-mentioned problems and/or disadvantages and to provide at least the advantages described below. Accordingly, an aspect of the present disclosure is to provide a self-destruction method and apparatus in which a self-impossible state is autonomously entered if the baseband modem of a receiving terminal which supports mobile communication is necessary. Another aspect of the present disclosure is to provide a method and apparatus for deleting information stored in memory when a command is received over a mobile communication network in which a baseband modem has been constructed and then entering a self-impossible state so that the terminal is not recovered although it is booted up again.
    Type: Grant
    Filed: July 2, 2014
    Date of Patent: October 27, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Yun Ju Kwon, In Yup Kang
  • Patent number: 9031161
    Abstract: An apparatus for a transmit end in a wireless communication system is provided. The apparatus includes at least one scrambler configured to scramble a transmission bit stream, wherein the at least one scrambler comprises, a first circulation unit configured to output, during one cycle, at least one bit for scrambling odd-numbered bits of the transmission bit stream and at least one bit for scrambling even-numbered bits of the transmission bit stream, a second circulation unit configured to output, during one cycle, at least one bit for scrambling odd-numbered bits of the transmission bit stream and at least one bit for scrambling even-numbered bits of the transmission bit stream, and operators configured to generate a scrambled bit stream, wherein each of the operators generates a scrambled bit using an input bit, an output bit from the first circulation unit and an output bit from the second circulation unit.
    Type: Grant
    Filed: October 11, 2013
    Date of Patent: May 12, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Kyung-Chul Yoo, Bo-Rham Lee, Yun-Ju Kwon, Dong-Min Kim
  • Publication number: 20150008955
    Abstract: A method and an apparatus for supporting a self-destruction function in a baseband modem are provided. A self-destruction method of a baseband modem includes sending a request for supplying power to a self-destruction unit to a power management unit when a command for performing the self-destruction is received from a base station and controlling the self-destruction unit to output a signal corresponding to a specific bit value. The signal output by the self-destruction unit is used to block a clock supplied from a Temperature-Compensated crystal Oscillator (TCXO) to the baseband modem through a logical operation with a signal output by the TCXO.
    Type: Application
    Filed: July 2, 2014
    Publication date: January 8, 2015
    Inventors: Yun Ju KWON, In Yup KANG
  • Patent number: 8924753
    Abstract: An apparatus and method for adaptively changing clock frequencies of a Central Processing Unit (CPU) and a bus in a digital system are provided. The system includes an Adaptive Frequency Scaling (AFS) controller and a clock controller. The AFS controller determines whether to change a clock frequency of the CPU according to operation information of the CPU, and determines whether to change a clock frequency of the bus according to operation information of the bus. The clock controller generates a clock frequency of the CPU and a clock frequency of the bus according to the determination of the AFS controller.
    Type: Grant
    Filed: October 19, 2011
    Date of Patent: December 30, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Tae-Hong Park, Ji-Yong Yoon, Kang-Min Lee, Yun-Ju Kwon, Jong-Hyuck Hong
  • Patent number: 8880577
    Abstract: The present invention provides a modulo operation method. The modulo operation method, in a case where the square of a divisor N is greater than or equal to a dividend C, includes: determining the number of computation stages n satisfying 2n<N?2n+1; performing an initialization operation by initializing a constant a to the smallest integer greater than or equal to half of N; performing a first operation by subtracting, when C is greater than or equal to N·a (product of N and a), the value of C by the value of N·a; and performing a second operation by assigning the smallest integer greater than or equal to half of a to the value of a, wherein the value of C is output as the result of modulo operation after the first operation and the second operation are repeated n times. In the first operation, when C is less than N·a, the value of C is unchanged.
    Type: Grant
    Filed: June 10, 2010
    Date of Patent: November 4, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jung Uk Woo, In Tae Kang, Yun Ju Kwon, Dong Min Kim
  • Patent number: 8811549
    Abstract: An apparatus and method for automatically controlling a gain in a portable communication system are provided. The apparatus includes a channel determiner for controlling a fading margin depending on the channel variation amount to control the limited total dynamic range of the ADC.
    Type: Grant
    Filed: October 13, 2009
    Date of Patent: August 19, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Byeong-Min Lee, Yun-Ju Kwon
  • Publication number: 20140044217
    Abstract: An apparatus for a transmit end in a wireless communication system is provided. The apparatus includes at least one scrambler configured to scramble a transmission bit stream, wherein the at least one scrambler comprises, a first circulation unit configured to output, during one cycle, at least one bit for scrambling odd-numbered bits of the transmission bit stream and at least one bit for scrambling even-numbered bits of the transmission bit stream, a second circulation unit configured to output, during one cycle, at least one bit for scrambling odd-numbered bits of the transmission bit stream and at least one bit for scrambling even-numbered bits of the transmission bit stream, and operators configured to generate a scrambled bit stream, wherein each of the operators generates a scrambled bit using an input bit, an output bit from the first circulation unit and an output bit from the second circulation unit.
    Type: Application
    Filed: October 11, 2013
    Publication date: February 13, 2014
    Applicant: Samsung Electronics Co. Ltd.
    Inventors: Kyung-Chul YOO, Bo-Rham LEE, Yun-Ju KWON, Dong-Min KIM
  • Publication number: 20140030242
    Abstract: Disclosed are a novel strain with antibacterial activity, identified as Streptomyces sp. AN1542 strain (Accession No.: KCTC 12113BP), an antibacterial composition comprising a compound represented by Chemical Formula 1 or 2, or a strain producing the same as an active ingredient, and a method for producing the same. Exhibiting potent antibacterial activity against pathogenic microbes and antibiotic-resistant microbes, particularly, MRSA, QRSA, VRSA and VRE, the compound or the strain of the present invention can be applied to the treatment of infectious diseases caused by superbacteria.
    Type: Application
    Filed: January 4, 2012
    Publication date: January 30, 2014
    Inventors: Won Gon Kim, Yun Ju Kwon, Mi Jin Sohn
  • Patent number: 8605821
    Abstract: An apparatus and method for scrambling in a wireless communication system are provided. The apparatus includes a selector, a plurality of scramblers, and a plurality of modulators. The selector selects a scrambling scheme to be applied to a transmission bit stream according to a modulation scheme to be applied to the transmission bit stream. The plurality of scramblers scramble the transmission bit stream according to a scrambling scheme corresponding to each of a plurality of modulation schemes. The plurality of modulators modulate the scrambled transmission bit stream according to the plurality of modulation schemes.
    Type: Grant
    Filed: September 3, 2009
    Date of Patent: December 10, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Kyung-Chul Yoo, Bo-Rham Lee, Yun-Ju Kwon, Dong-Min Kim
  • Publication number: 20120102345
    Abstract: An apparatus and method for adaptively changing clock frequencies of a Central Processing Unit (CPU) and a bus in a digital system are provided. The system includes an Adaptive Frequency Scaling (AFS) controller and a clock controller. The AFS controller determines whether to change a clock frequency of the CPU according to operation information of the CPU, and determines whether to change a clock frequency of the bus according to operation information of the bus. The clock controller generates a clock frequency of the CPU and a clock frequency of the bus according to the determination of the AFS controller.
    Type: Application
    Filed: October 19, 2011
    Publication date: April 26, 2012
    Applicant: SAMSUNG ELECTRONICS CO. LTD.
    Inventors: Tae-Hong PARK, Ji-Yong YOON, Kang-Min LEE, Yun-Ju KWON, Jong-Hyuck HONG
  • Publication number: 20120089658
    Abstract: The present invention provides a modulo operation method. The modulo operation method, in a case where the square of a divisor N is greater than or equal to a dividend C, includes: determining the number of computation stages n satisfying 2n<N?2n+1; performing an initialization operation by initializing a constant a to the smallest integer greater than or equal to half of N; performing a first operation by subtracting, when C is greater than or equal to N·a (product of N and a), the value of C by the value of N·a; and performing a second operation by assigning the smallest integer greater than or equal to half of a to the value of a, wherein the value of C is output as the result of modulo operation after the first operation and the second operation are repeated n times. In the first operation, when C is less than N·a, the value of C is unchanged.
    Type: Application
    Filed: June 10, 2010
    Publication date: April 12, 2012
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jung Uk Woo, In Tae Kang, Yun Ju Kwon, Dong Min Kim
  • Publication number: 20110150134
    Abstract: An apparatus and method for scrambling in a wireless communication system are provided. The apparatus includes a selector, a plurality of scramblers, and a plurality of modulators. The selector selects a scrambling scheme to be applied to a transmission bit stream according to a modulation scheme to be applied to the transmission bit stream. The plurality of scramblers scramble the transmission bit stream according to a scrambling scheme corresponding to each of a plurality of modulation schemes. The plurality of modulators modulate the scrambled transmission bit stream according to the plurality of modulation schemes.
    Type: Application
    Filed: September 3, 2009
    Publication date: June 23, 2011
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Kyung-Chul Yoo, Bo-Rham Lee, Yun-Ju Kwon, Dong-Min Kim
  • Patent number: 7961012
    Abstract: An apparatus and for preventing a glitch in a clock switching circuit includes a select signal manager and a clock gate unit. The select signal manager generates a detect change signal, provides the detect change signal as an input signal for generating a clock gate signal to the clock gate unit, and changes a muxsel signal into a select signal using the clock gate signal to select a clock intending for switching. Upon receiving the detect change signal, the clock gate unit gates a received clock, generates the clock gate signal using a level of the detect change signal as an input signal, and provides the generated clock gate signal to the select signal manager.
    Type: Grant
    Filed: August 8, 2008
    Date of Patent: June 14, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Heon-Seok Hong, Yun-Ju Kwon, Yong-Chan Kim
  • Patent number: 7945003
    Abstract: Disclosed is a method for detecting a frequency offset in an Orthogonal Frequency Division Multiplexing (OFDM) system. The method includes determining a first frequency index based on autocorrelation values calculated according to a frequency index for a pilot signal of a received symbol, accumulating the autocorrelation values calculated according to the frequency index for the pilot signal of the received symbol depending on a symbol count, and determining a second frequency index based on the accumulated autocorrelation values, and determining at least one of the first frequency index and the second frequency as a frequency offset according to channel quality.
    Type: Grant
    Filed: February 14, 2007
    Date of Patent: May 17, 2011
    Assignee: Qualcomm Incorporated
    Inventors: Yun-Ju Kwon, Su-Jin Yoon
  • Publication number: 20100098196
    Abstract: An apparatus and method for automatically controlling a gain in a portable communication system are provided. The apparatus includes a channel determiner for controlling a fading margin depending on the channel variation amount to control the limited total dynamic range of the ADC.
    Type: Application
    Filed: October 13, 2009
    Publication date: April 22, 2010
    Applicant: SAMSUNG ELECTRONICS CO. LTD.
    Inventors: Byeong-Min LEE, Yun-Ju KWON
  • Publication number: 20090039940
    Abstract: An apparatus and for preventing a glitch in a clock switching circuit includes a select signal manager and a clock gate unit. The select signal manager generates a detect change signal, provides the detect change signal as an input signal for generating a clock gate signal to the clock gate unit, and changes a muxsel signal into a select signal using the clock gate signal to select a clock intending for switching. Upon receiving the detect change signal, the clock gate unit gates a received clock, generates the clock gate signal using a level of the detect change signal as an input signal, and provides the generated clock gate signal to the select signal manager.
    Type: Application
    Filed: August 8, 2008
    Publication date: February 12, 2009
    Inventors: Heon-Seok Hong, Yun-Ju Kwon, Yong-Chan Kim
  • Publication number: 20080095249
    Abstract: An apparatus and method for estimating a coarse carrier frequency offset in an OFDM receiver are provided, in which an Fast Fourier Transform (FFT) unit performs FFT for a received signal over one symbol duration and outputs a previously known signal included in the FFT signal, a correlation value calculator evaluates autocorrelation values of the previously known signal for plural candidate offsets, an accumulator accumulates the autocorrelation values to the autocorrelation values evaluated over a previous symbol duration, and a maximum value selector selects first and second maximum values of the autocorrelation values. A threshold tester compares a ratio between the first and second maximum values with a predetermined threshold, and determines a candidate offset corresponding to the first maximum value as the coarse carrier frequency offset if the ratio is less than the threshold. Otherwise, the threshold tester instructs the FFT unit to receive a signal over a next symbol duration.
    Type: Application
    Filed: December 27, 2006
    Publication date: April 24, 2008
    Inventors: Su-Jin Yoon, Yun-Ju Kwon, Hee-Jin Roh
  • Publication number: 20070206692
    Abstract: Disclosed is a method for detecting a frequency offset in an Orthogonal Frequency Division Multiplexing (OFDM) system. The method includes determining a first frequency index based on autocorrelation values calculated according to a frequency index for a pilot signal of a received symbol, accumulating the autocorrelation values calculated according to the frequency index for the pilot signal of the received symbol depending on a symbol count, and determining a second frequency index based on the accumulated autocorrelation values, and determining at least one of the first frequency index and the second frequency as a frequency offset according to channel quality.
    Type: Application
    Filed: February 14, 2007
    Publication date: September 6, 2007
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Yun-Ju Kwon, Su-Jin Yoon
  • Publication number: 20050190819
    Abstract: A reception apparatus and method are provided for acquiring code timing by receiving pilot signals spread with allocated codes in a receiver using multiple antennas, wherein a transmitter using multiple antennas allocates different codes to pilot signals for transmitting through the respective antennas. The apparatus and method comprise receiving the spread pilot signals through the respective antennas; outputting estimated propagation delay values of the pilot signals transmitted from the respective antennas of the transmitter and peak values of matched filters for respective channels; and calculating new estimated propagation delay values by applying weights determined based on the peak values of matched filters for respective channels to the estimated propagation delay values, and acquiring code timing with the new estimated propagation delay values.
    Type: Application
    Filed: February 25, 2005
    Publication date: September 1, 2005
    Inventors: Yun-Ju Kwon, Chul-Jin Kim, June-Hyeok Im, In-Kwon Paik