Patents by Inventor Hui Dong
Hui Dong 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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Publication number: 20140085016Abstract: A lock detector and a clock generator including the same are disclosed. A lock detector includes a counter unit which counts a non-matching section of a first signal and a second signal to provide a count value, the first signal and the second signal being comparison result signals obtained by comparing a phase of a reference signal with a phase of a comparison signal, and a lock detection unit which outputs a lock detection signal based on a result of comparing the count value with the reference value. Accordingly, a lock state of the phase-locked loop can be detected rapidly and exactly.Type: ApplicationFiled: September 25, 2013Publication date: March 27, 2014Applicant: Electronics and Telecommunications Research InstituteInventors: Hui Dong LEE, Kwang Chun LEE, Jae Ho JUNG
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Patent number: 8604845Abstract: Disclosed is a triangular wave generator which includes a square wave signal generating unit configured to output a first signal transitioning to a high level from a low level via an output terminal in response to a first transition of a clock signal and to transition the first signal to a low level from a high level in response to a reset signal; a resistance unit configured to adjust a voltage level of a the square wave signal; and a capacitance unit configured to receive an output signal of the resistance unit to generate a second signal rising to a high level from a low level with a slope, to provide the reset signal to the square wave signal generating unit, and to output a triangular signal by falling the second signal to a low level from a high level with a slope.Type: GrantFiled: June 4, 2012Date of Patent: December 10, 2013Assignee: Electronics and Telecommunications Research InstituteInventors: Hui Dong Lee, Jaewon Nam, Young Kyun Cho, Jong-Kee Kwon, Yil Suk Yang, Jongdae Kim
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Patent number: 8446194Abstract: Provided is a spread spectrum clock generating circuit. The spread spectrum clock generating circuit includes: a phase detector receiving a reference frequency signal from the external and detecting a phase difference between the reference frequency signal and a frequency-divided signal; a voltage controlled oscillator outputting an oscillation signal corresponding to a detection result of the phase detector; a main divider generating the frequency-divided signal by dividing a frequency of the oscillation signal by a main dividing ratio; and a dividing ratio controller generating a variable count value, generating a sub dividing ratio by performing delta-sigma modulation according to the count value, and adjusting the main dividing ratio according to the sub dividing ratio.Type: GrantFiled: October 18, 2011Date of Patent: May 21, 2013Assignee: Electronics and Telecommunications Research InstituteInventors: Seok Ju Yun, Hui Dong Lee, Kwi Dong Kim, Jong-Kee Kwon
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Publication number: 20130121958Abstract: The present invention provides an innovative versatile system, which allows delivery of one or several antigens or biologically active molecules into or onto targeted subset of cells. The invention is in particular directed to a combination of compounds and in particular to a composition, which comprises: (i) a fusion polypeptide comprising a streptavidin (SA) or avidin polypeptide and one or several effector molecule(s), wherein said fusion polypeptide retains the property of SA and avidin polypeptides to bind biotin; (ii) biotinylated targeting molecule(s), which are capable of targeting subset(s) of cells and/or cell surface molecule(s), and in particular dendritic cells (DC), subsets of DC and/or surface molecule(s) (including surface receptor(s)) of DC.Type: ApplicationFiled: December 12, 2010Publication date: May 16, 2013Applicants: INSTITUTE OF MICROBIOLOGY OF THE ASCR., V.V.I., INSTITUT PASTEURInventors: Claude Leclerc, Laleh Majlessi, Hui Dong, Peter Sebo, Ondrej Stanek
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Publication number: 20130027094Abstract: Disclosed is a triangular wave generator which includes a square wave signal generating unit configured to output a first signal transitioning to a high level from a low level via an output terminal in response to a first transition of a clock signal and to transition the first signal to a low level from a high level in response to a reset signal; a resistance unit configured to adjust a voltage level of a the square wave signal; and a capacitance unit configured to receive an output signal of the resistance unit to generate a second signal rising to a high level from a low level with a slope, to provide the reset signal to the square wave signal generating unit, and to output a triangular signal by falling the second signal to a low level from a high level with a slope.Type: ApplicationFiled: June 4, 2012Publication date: January 31, 2013Applicant: Electronics and Telecommunications Research InstituteInventors: Hui Dong LEE, Jaewon Nam, Young Kyun Cho, Jong-Kee Kwon, Yil Suk Yang, Jongdae Kim
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Phase locked loop circuit including automatic frequency control circuit and operating method thereof
Patent number: 8350608Abstract: Provided is a PLL circuit including automatic frequency control circuit and an operating method thereof. The voltage controlled oscillator is primarily controlled by an automatic frequency control circuit, and is secondarily controlled by a loop filter. The voltage controlled oscillator outputs a coarsely-tuned oscillation signal when primarily controlled, and outputs a finely-tuned oscillation signal when secondarily controlled. The PLL circuit can have a quick frequency fixing time, and output the oscillation signal having a broad and stable frequency. Moreover, the noise characteristic of the PLL circuit is enhanced.Type: GrantFiled: December 22, 2010Date of Patent: January 8, 2013Assignee: Electronics and Telecommunications Research InstituteInventors: Hui Dong Lee, Seok Ju Yun, Kwi Dong Kim, Jong-Kee Kwon, Sang-Hyun Cho -
Publication number: 20120268052Abstract: A motor control device including a preprocessing portion calculating a counter electromotive force using an analog operation is provided. The motor control device may include an offset compensation portion and a counter electromotive force measuring portion. The offset compensation portion receives a three-phase current signal from the motor and compensates an offset of the three-phase current signal. The counter electromotive force measuring portion receives the compensated current signal and a three-phase voltage signal from the motor and calculates the received current signal and the received voltage signal using an analog operation to provide the calculated result.Type: ApplicationFiled: April 10, 2012Publication date: October 25, 2012Applicant: Electronics and Telecommunications Research InstituteInventors: Jaewon NAM, Young Kyun Cho, Hui Dong Lee, Yil Suk Yang, Jong-Kee Kwon, Jongdae Kim
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Publication number: 20120242266Abstract: Provided is a sensorless BLDC motor system. The sensorless BLDC motor system includes a BLDC motor, a comparator, a motor controller, a three-phase inverter, and a mode selector. The BLDC motor includes first to third coils. The comparator compares a voltage of a specific coil of the first to third coils with a neutral-point voltage to output the compared result. The voltage of the specific coil becomes equal to the neutral-point voltage and a specific time elapses, and then the motor controller generates first and second coil control signals based on the compared result. The three-phase inverter supplies a source voltage or ground voltage to the specific coil, or floats the specific coil, in response to the first and second coil control signals. The mode selector selects a driving mode of the BLDC motor by adjusting the specific time.Type: ApplicationFiled: January 10, 2012Publication date: September 27, 2012Applicant: Electronics and Telecommunications Research InstituteInventors: Young Kyun CHO, Hui Dong LEE, Jaewon NAM, Jong-Kee KWON
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Patent number: 8274317Abstract: A phase-locked loop (PLL) circuit including a voltage-controlled oscillator (VCO) with a variable gain is provided. A phase frequency detector (PFD) detects a phase difference between a reference signal and a PLL feedback signal. A charge pump and a loop filter sequentially process an output signal of the PFD. A VCO has different gains according to a mode transition. A control voltage applied to the VCO is selected from an output signal of the loop filter and an additional control signal according to the mode transition.Type: GrantFiled: September 14, 2010Date of Patent: September 25, 2012Assignee: Electronics and Telecommunications Research InstituteInventors: Sang Hyun Cho, Hui Dong Lee, Kwi Dong Kim, Jong Kee Kwon, Seung Tak Ryu
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Publication number: 20120239122Abstract: The present invention teaches an apparatus and method for physical therapy using prompt changing temperature from hot to cold. Its application in proper conditions may promote human body's self recovery function, restore balance for soft tissues and relieve inner pressure.Type: ApplicationFiled: March 16, 2012Publication date: September 20, 2012Inventors: Rong Dong, Mary Hui Dong
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Patent number: 8264293Abstract: Provided is a transformer-based oscillator which is suited to oscillate frequencies in multiple bands. An oscillator includes a transformer resonance unit and a plurality of complementary transistors. The transformer resonance unit includes a primary coil and a secondary coil corresponding to the primary coil. The plurality of complementary transistors have gates and drains between which both ends of the transformer resonance unit are respectively connected. Thus, the oscillator may operate in a differential mode or common mode according to the phase of the transformer resonance unit. Also, a complementary transistor constituting a multiband oscillation loop may be independently connected to both ends of the transformer resonance unit, and an oscillation loop of at least one band may be selected out of a multiband oscillation loop using a switch unit. Thus, the oscillator may be suited to oscillate resonance frequencies in multiple bands.Type: GrantFiled: July 27, 2010Date of Patent: September 11, 2012Assignee: Electronics and Telecommunications Research InstituteInventors: Seok Ju Yun, Hui Dong Lee, Kwi Dong Kim, Jong Kee Kwon
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Patent number: 8217728Abstract: An LC voltage-controlled oscillator (VCO) is provided. The LC VCO includes an LC resonant circuit including at least one inductor whose both terminals are connected to output nodes and at least one capacitor connected in parallel with the inductor, and an amplifier circuit including at least one pair of switching transistors. Here, drains of the pair of switching transistors are connected to the output nodes respectively, and gates of the switching transistors are connected with the drains through a variable capacitance block exhibiting different characteristics according to an input signal.Type: GrantFiled: September 9, 2010Date of Patent: July 10, 2012Assignee: Electronics and Telecommunications Research InstituteInventors: Hui Dong Lee, Kwi Dong Kim, Jong Kee Kwon, Jong Dae Kim
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Publication number: 20120105114Abstract: Provided is a spread spectrum clock generating circuit. The spread spectrum clock generating circuit includes: a phase detector receiving a reference frequency signal from the external and detecting a phase difference between the reference frequency signal and a frequency-divided signal; a voltage controlled oscillator outputting an oscillation signal corresponding to a detection result of the phase detector; a main divider generating the frequency-divided signal by dividing a frequency of the oscillation signal by a main dividing ratio; and a dividing ratio controller generating a variable count value, generating a sub dividing ratio by performing delta-sigma modulation according to the count value, and adjusting the main dividing ratio according to the sub dividing ratio.Type: ApplicationFiled: October 18, 2011Publication date: May 3, 2012Applicant: Electronics and Telecommunications Research InstituteInventors: Seok Ju YUN, Hui Dong Lee, Kwi Dong Kim, Jong-Kee Kwon
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Publication number: 20120084090Abstract: The present invention is directed to methods and systems for implementing a procurement change request process. The method includes receiving a request to edit a requisition order from a requestor. The requisition order has been previously completed and the requisition order includes a lines. The method further includes receiving updates to at least one of the lines, and based on the received updates, updating the at least one of the lines of the requisition order. Further, the method includes determining that the at least one of the lines has been sourced to a purchase order, in response to the at least one of the lines being sourced to the purchase order, creating a requisition change request for the at least one of the lines, and updating the purchase order with the updates to the at least one of the lines of the requisition order.Type: ApplicationFiled: October 5, 2010Publication date: April 5, 2012Applicant: Oracle International CorporationInventors: Bridget Woodard, Weishin Yin, Jenny Kwan, Hui Dong, Rachel Ip, Earnest Ivie
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PHASE LOCKED LOOP CIRCUIT INCLUDING AUTOMATIC FREQUENCY CONTROL CIRCUIT AND OPERATING METHOD THEREOF
Publication number: 20120056654Abstract: Provided is a PLL circuit including automatic frequency control circuit and an operating method thereof. The voltage controlled oscillator is primarily controlled by an automatic frequency control circuit, and is secondarily controlled by a loop filter. The voltage controlled oscillator outputs a coarsely-tuned oscillation signal when primarily controlled, and outputs a finely-tuned oscillation signal when secondarily controlled. The PLL circuit can have a quick frequency fixing time, and output the oscillation signal having a broad and stable frequency. Moreover, the noise characteristic of the PLL circuit is enhanced.Type: ApplicationFiled: December 22, 2010Publication date: March 8, 2012Applicant: Electronics and Telecommunications Research InstituteInventors: HUI DONG LEE, Seok Ju YUN, Kwi Dong KIM, Jong-Kee KWON, Sang-Hyun CHO -
Patent number: 8081038Abstract: Provided is a ring oscillator having an extended range of oscillation frequency by varactors coupled to delay cells even in a simple structure. The wide frequency range results from simply varying an oscillation frequency by control signals applied to the varactors. Since additional switches connected to the delay cells contribute to increase or decrease of the oscillation frequency range, the ring oscillator can conveniently be employed in various types of oscillation systems.Type: GrantFiled: July 22, 2009Date of Patent: December 20, 2011Assignee: Electronics and Telecommunications Research InstituteInventors: Hui Dong Lee, Kwi Dong Kim, Jong Kee Kwon
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Patent number: 8040156Abstract: Provided are a lock detection circuit and a lock detecting method. The lock detection circuit includes two delay devices, four flip-flops and two logic gates, and can accurately detect a lock state of a phase locked loop (PLL) circuit. Therefore, the lock detection circuit can be implemented in a simple structure, and as a result, the lock detection circuit can be compact in size and can consume less electric power. Also, the lock detecting method enables lock detection process to be simpler, so that a lock state can be detected within a short time period.Type: GrantFiled: May 14, 2009Date of Patent: October 18, 2011Assignee: Electronics and Telecommunications Research InstituteInventors: Hui Dong Lee, Kwi Dong Kim, Jong Kee Kwon
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Publication number: 20110148485Abstract: A phase-locked loop (PLL) circuit including a voltage-controlled oscillator (VCO) with a variable gain is provided. A phase frequency detector (PFD) detects a phase difference between a reference signal and a PLL feedback signal. A charge pump and a loop filter sequentially process an output signal of the PFD. A VCO has different gains according to a mode transition. A control voltage applied to the VCO is selected from an output signal of the loop filter and an additional control signal according to the mode transition.Type: ApplicationFiled: September 14, 2010Publication date: June 23, 2011Applicant: Electronics and Telecommunications Research InstituteInventors: Sang Hyun CHO, Hui Dong Lee, Kwi Dong Kim, Jong Kee Kwon, Seung Tak Ryu
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Publication number: 20110148534Abstract: An LC voltage-controlled oscillator (VCO) is provided. The LC VCO includes an LC resonant circuit including at least one inductor whose both terminals are connected to output nodes and at least one capacitor connected in parallel with the inductor, and an amplifier circuit including at least one pair of switching transistors. Here, drains of the pair of switching transistors are connected to the output nodes respectively, and gates of the switching transistors are connected with the drains through a variable capacitance block exhibiting different characteristics according to an input signal.Type: ApplicationFiled: September 9, 2010Publication date: June 23, 2011Applicant: Electronics and Telecommunications Research InstituteInventors: Hui Dong LEE, Kwi Dong Kim, Jong Kee Kwon, Jong Dae Kim
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Patent number: 7928806Abstract: Provided is a low voltage frequency synthesizer using a boosting method for a power supply voltage of a charge pump. The low voltage frequency synthesizer includes a phase/frequency detector (PFD) that receives and compares a reference frequency and a feedback frequency to output a comparison signal, a charge pump that receives the comparison signal to output a current corresponding to the comparison signal, a low-pass filter (LPF) that generates a voltage corresponding to the output current of the charge pump, a voltage controlled oscillator (VCO) that receives the voltage of the LPF, amplifies the voltage to generate a boosting voltage, and outputs a frequency corresponding to the received voltage, and a DC converter that receives the boosting voltage of the VCO, converts the boosting voltage into a DC voltage, and applies the DC voltage as a power supply voltage of the charge pump.Type: GrantFiled: September 17, 2009Date of Patent: April 19, 2011Assignees: Electronics and Telecommunications Research Institute, Korea Advanced Institute of Science and TechnologyInventors: Hui Dong Lee, Kwi Dong Kim, Jong Kee Kwon, Jong Pil Hong, Sang Gug Lee