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).
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Patent number: 9172380Abstract: 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: GrantFiled: July 2, 2014Date of Patent: October 27, 2015Assignee: Samsung Electronics Co., Ltd.Inventors: Yun Ju Kwon, In Yup Kang
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Patent number: 9031161Abstract: 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: GrantFiled: October 11, 2013Date of Patent: May 12, 2015Assignee: Samsung Electronics Co., Ltd.Inventors: Kyung-Chul Yoo, Bo-Rham Lee, Yun-Ju Kwon, Dong-Min Kim
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Publication number: 20150008955Abstract: 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: ApplicationFiled: July 2, 2014Publication date: January 8, 2015Inventors: Yun Ju KWON, In Yup KANG
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Patent number: 8924753Abstract: 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: GrantFiled: October 19, 2011Date of Patent: December 30, 2014Assignee: Samsung Electronics Co., Ltd.Inventors: Tae-Hong Park, Ji-Yong Yoon, Kang-Min Lee, Yun-Ju Kwon, Jong-Hyuck Hong
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Patent number: 8880577Abstract: 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: GrantFiled: June 10, 2010Date of Patent: November 4, 2014Assignee: Samsung Electronics Co., Ltd.Inventors: Jung Uk Woo, In Tae Kang, Yun Ju Kwon, Dong Min Kim
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Patent number: 8811549Abstract: 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: GrantFiled: October 13, 2009Date of Patent: August 19, 2014Assignee: Samsung Electronics Co., Ltd.Inventors: Byeong-Min Lee, Yun-Ju Kwon
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Publication number: 20140044217Abstract: 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: ApplicationFiled: October 11, 2013Publication date: February 13, 2014Applicant: Samsung Electronics Co. Ltd.Inventors: Kyung-Chul YOO, Bo-Rham LEE, Yun-Ju KWON, Dong-Min KIM
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Publication number: 20140030242Abstract: 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: ApplicationFiled: January 4, 2012Publication date: January 30, 2014Inventors: Won Gon Kim, Yun Ju Kwon, Mi Jin Sohn
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Patent number: 8605821Abstract: 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: GrantFiled: September 3, 2009Date of Patent: December 10, 2013Assignee: Samsung Electronics Co., Ltd.Inventors: Kyung-Chul Yoo, Bo-Rham Lee, Yun-Ju Kwon, Dong-Min Kim
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Publication number: 20120102345Abstract: 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: ApplicationFiled: October 19, 2011Publication date: April 26, 2012Applicant: SAMSUNG ELECTRONICS CO. LTD.Inventors: Tae-Hong PARK, Ji-Yong YOON, Kang-Min LEE, Yun-Ju KWON, Jong-Hyuck HONG
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Publication number: 20120089658Abstract: 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: ApplicationFiled: June 10, 2010Publication date: April 12, 2012Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Jung Uk Woo, In Tae Kang, Yun Ju Kwon, Dong Min Kim
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Publication number: 20110150134Abstract: 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: ApplicationFiled: September 3, 2009Publication date: June 23, 2011Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Kyung-Chul Yoo, Bo-Rham Lee, Yun-Ju Kwon, Dong-Min Kim
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Patent number: 7961012Abstract: 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: GrantFiled: August 8, 2008Date of Patent: June 14, 2011Assignee: Samsung Electronics Co., Ltd.Inventors: Heon-Seok Hong, Yun-Ju Kwon, Yong-Chan Kim
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Patent number: 7945003Abstract: 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: GrantFiled: February 14, 2007Date of Patent: May 17, 2011Assignee: Qualcomm IncorporatedInventors: Yun-Ju Kwon, Su-Jin Yoon
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Publication number: 20100098196Abstract: 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: ApplicationFiled: October 13, 2009Publication date: April 22, 2010Applicant: SAMSUNG ELECTRONICS CO. LTD.Inventors: Byeong-Min LEE, Yun-Ju KWON
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Publication number: 20090039940Abstract: 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: ApplicationFiled: August 8, 2008Publication date: February 12, 2009Inventors: Heon-Seok Hong, Yun-Ju Kwon, Yong-Chan Kim
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Publication number: 20080095249Abstract: 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: ApplicationFiled: December 27, 2006Publication date: April 24, 2008Inventors: Su-Jin Yoon, Yun-Ju Kwon, Hee-Jin Roh
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Publication number: 20070206692Abstract: 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: ApplicationFiled: February 14, 2007Publication date: September 6, 2007Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Yun-Ju Kwon, Su-Jin Yoon
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Publication number: 20050190819Abstract: 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: ApplicationFiled: February 25, 2005Publication date: September 1, 2005Inventors: Yun-Ju Kwon, Chul-Jin Kim, June-Hyeok Im, In-Kwon Paik