Patents by Inventor Seung Kon Kong
Seung Kon Kong 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: 9653991Abstract: A power converter may include an inductor, a switch turned on or turned off according to a control signal to control the flow of a current flowing through the inductor, and a control unit for outputting the control signal to turn on or turn off the switch by integrating a current flowing through the switch to compare the integrated current with the size of a preset reference voltage. The power converter and a driving method for the same may reduce errors of current control and have a simple structure.Type: GrantFiled: April 8, 2015Date of Patent: May 16, 2017Assignee: Solum Co., Ltd.Inventors: Man Dong Lee, Seung Kon Kong, Hyun Ku Kang, Dae Hoon Han, Jung Eui Park
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Publication number: 20160105103Abstract: The converter includes: a switching unit; an energy storing unit storing energy from direct current input power and then generating an output voltage according to a switching operation of the switching unit; and a switching controlling unit turning on the switching unit when a voltage between one end of the switching unit and the other end thereof reaches a zero point of a resonance waveform, wherein the switching controlling unit includes: a voltage detecting unit detecting the voltage one end of the switching unit and the other end thereof in case of a resonance waveform; a first comparator comparing the voltage detected by the voltage detecting unit with a predetermined first reference voltage corresponding to the zero point of the resonance waveform and outputting a first signal according to a comparison result; and a switching driving unit turning on the switching unit in response to the first signal.Type: ApplicationFiled: July 30, 2015Publication date: April 14, 2016Applicant: SOLUM CO., LTD.Inventors: Bo Hyun HWANG, Jin Soo LEE, Seung Kon KONG, Dae Hoon HAN
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Publication number: 20160105104Abstract: A converter includes a switching unit; an energy storage unit storing energy from DC input power and then generating an output voltage, depending on a switching operation of the switching unit; and a switching control unit turning on the switching unit when a voltage between one terminal and the other terminal of the switching unit reaches a lowest point of a resonance waveform. The switching control unit includes a voltage detection unit detecting the voltage between the one terminal and the other terminal at the time of the resonance waveform; a first signal output unit outputting a first signal when the voltage detected by the voltage detection unit reaches a change point of a slope corresponding to the lowest point of the resonance waveform; and a switching driving unit turning on the switching unit in response to the first signal.Type: ApplicationFiled: August 3, 2015Publication date: April 14, 2016Applicant: SOLUM CO., LTD.Inventors: Bo Hyun HWANG, Jin Soo LEE, Seung Kon KONG, Jung Eui PARK, Min Young AHN
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Publication number: 20150346747Abstract: An off signal generator may be capable of supplying a uniform current. The off signal generator may comprise an off signal generation unit outputting an off signal in response to a first signal and blocking the off signal from being output in response to a second signal, and a signal control unit generating the second signal at a preset time interval and transferring the generated second signal to the off signal generation unit.Type: ApplicationFiled: November 21, 2014Publication date: December 3, 2015Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.Inventors: Jung Eui PARK, Min Young AHN, Dae Hoon HAN, Seung Kon KONG, Hyun Ku KANG
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Publication number: 20150288280Abstract: A power converter may include an inductor, a switch turned on or turned off according to a control signal to control the flow of a current flowing through the inductor, and a control unit for outputting the control signal to turn on or turn off the switch by integrating a current flowing through the switch to compare the integrated current with the size of a preset reference voltage. The power converter and a driving method for the same may reduce errors of current control and have a simple structure.Type: ApplicationFiled: April 8, 2015Publication date: October 8, 2015Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.Inventors: Man Dong LEE, Seung Kon KONG, Hyun Ku KANG, Dae Hoon HAN, Jung Eui PARK
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Publication number: 20150288279Abstract: A power converter and a driving method for the same may prevent a current from flowing excessively during initial driving. The power converter may include an inductor, a switch turned on or turned off according to a control signal to control a current flowing through the inductor, and a control unit detecting the magnitude of the current flowing through the switch, outputting the control signal for controlling the turn-on/turn-off operation of the switch, setting a reference current and turning off the switch during a preset first time when the current flowing through the switch reaches the reference current during initial driving.Type: ApplicationFiled: December 16, 2014Publication date: October 8, 2015Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.Inventors: Man Dong LEE, Seung Kon Kong, Hyun Ku Kang, Dae Hoon Han, Jung Eui Park
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Patent number: 9148928Abstract: There is provided a light emitting diode driver capable of improving power efficiency by using a resistor having a low power consumption rating while controlling an LED channel so that it has constant brightness stably. The light emitting diode driver includes: a power supplying unit converting an input voltage into a predetermined driving voltage so as to supply the driving voltage to an LED channel; and a driving unit amplifying a detection voltage detected based on a current from the LED channel by a predetermined gain and controlling the current flowing through the LED channel so that the amplified detection voltage has a level equal to that of a predetermined reference voltage.Type: GrantFiled: January 24, 2014Date of Patent: September 29, 2015Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.Inventors: Jung Eui Park, Jin Soo Lee, Byoung Woo Ryu, Seung Kon Kong, Dae Hoon Han, Bo Hyun Hwang
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Patent number: 9055640Abstract: There is provided a light emitting diode driving apparatus capable of uniformly maintaining current balance between light emitting diode channels. The light emitting diode driving apparatus includes: a DC to DC converting unit converting the direct current power into settable driving power; a detecting unit detecting voltage drops generated in each of a plurality of light emitting diode channels each having a plurality of light emitting diodes; a converting unit converting an analog value into a digital value; and a driving unit differentially setting duty cycles of switching signals according to the digital values from the converting unit to drive the plurality of light emitting diode channels.Type: GrantFiled: June 12, 2012Date of Patent: June 9, 2015Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.Inventors: Jung Eui Park, Bo Hyun Hwang, Seo Hyung Kim, Jae Shin Lee, Dae Hoon Han, Seung Kon Kong
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Publication number: 20150115840Abstract: There is provided a light emitting diode driver capable of improving power efficiency by using a resistor having a low power consumption rating while controlling an LED channel so that it has constant brightness stably. The light emitting diode driver includes: a power supplying unit converting an input voltage into a predetermined driving voltage so as to supply the driving voltage to an LED channel; and a driving unit amplifying a detection voltage detected based on a current from the LED channel by a predetermined gain and controlling the current flowing through the LED channel so that the amplified detection voltage has a level equal to that of a predetermined reference voltage.Type: ApplicationFiled: January 24, 2014Publication date: April 30, 2015Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.Inventors: Jung Eui PARK, Jin Soo Lee, Byoung Woo Ryu, Seung Kon Kong, Dae Hoon Han, Bo Hyun Hwang
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Patent number: 9000677Abstract: There is provided a light emitting diode driving apparatus, including: a power supplying unit converting input power into driving power according to a control and supplying the converted driving power to a light emitting diode channel; a driving unit controlling current flowing in the light emitting diode channel according to a pulse width modulation (PWM) dimming signal from the outside; and a controlling unit comparing a reference level set by a duty of the PWM dimming signal with a detection voltage level of the light emitting diode channel and controlling a power converting operation of the power supplying unit according to the comparison result.Type: GrantFiled: February 11, 2013Date of Patent: April 7, 2015Assignee: Samsung Electro-Mechanics Co., Ltd.Inventors: Jung Eui Park, Seung Kon Kong, Seo Hyung Kim, Bo Hyun Hwang, Jae Shin Lee
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Publication number: 20140139131Abstract: There is provided a light emitting diode driving apparatus, including: a power supplying unit converting input power into driving power according to a control and supplying the converted driving power to a light emitting diode channel; a driving unit controlling current flowing in the light emitting diode channel according to a pulse width modulation (PWM) dimming signal from the outside; and a controlling unit comparing a reference level set by a duty of the PWM dimming signal with a detection voltage level of the light emitting diode channel and controlling a power converting operation of the power supplying unit according to the comparison result.Type: ApplicationFiled: February 11, 2013Publication date: May 22, 2014Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.Inventors: Jung Eui PARK, Seung Kon KONG, Seo Hyung KIM, Bo Hyun HWANG, Jae Shin LEE
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Patent number: 8653749Abstract: Disclosed herein is a light emitting diode (LED) driving device for driving a multi-channel LED element or an LED array for each channel, the LED driving device including: a constant current driver driving currents flowing in each channel; and a minimum voltage selector receiving voltage levels of each channel and selecting a minimum voltage level to thereby feedback the selected minimum voltage level to the constant current driver, wherein matching characteristics of currents flowing in each channel is improved and a size of an integrated circuit (IC) chip is also reduced as compared to a case according to the related art, thereby making it possible to reduce a production cost and satisfy the trend of miniaturization of the chip, while solving a performance deterioration problem due to deterioration of the matching of the currents between the channels.Type: GrantFiled: May 16, 2011Date of Patent: February 18, 2014Assignee: Samsung Electro-Mechanics Co., Ltd.Inventors: Bo Hyun Hwang, Jung Sun Kwon, Seung Kon Kong, Jung Hyun Kim, Jae Shin Lee, Joon Youp Sung
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Publication number: 20130249424Abstract: There is provided a light emitting diode driving apparatus capable of uniformly controlling current balance between light emitting diode channels. The light emitting diode driving apparatus includes: an AC to DC converting unit converting input AC power into a preset DC driving power; a detecting unit detecting voltage drops generated in a plurality of respective light emitting diode channels each having a plurality of light emitting diodes performing a light emitting operation by receiving the DC driving power; a converting unit converting analog values detected from the detecting unit into digital values; and a driving unit differentially setting switching signal duty cycles in which a driving current is allowed to flow in the plurality of respective light emitting diode channels according to the digital values from the converting unit to drive the plurality of light emitting diode channels.Type: ApplicationFiled: June 12, 2012Publication date: September 26, 2013Inventors: Jung Eui PARK, Seung Kon Kong, Joon Youp Sung, Jae Shin Lee, Jin Soo Lee, Jung Sun Kwon
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Publication number: 20130249418Abstract: There is provided a light emitting diode driving apparatus capable of uniformly maintaining current balance between light emitting diode channels. The light emitting diode driving apparatus includes: a DC to DC converting unit converting the direct current power into settable driving power; a detecting unit detecting voltage drops generated in each of a plurality of light emitting diode channels each having a plurality of light emitting diodes; a converting unit converting an analog value into a digital value; and a driving unit differentially setting duty cycles of switching signals according to the digital values from the converting unit to drive the plurality of light emitting diode channels.Type: ApplicationFiled: June 12, 2012Publication date: September 26, 2013Inventors: Jung Eui PARK, Bo Hyun Hwang, Seo Hyung Kim, Jae Shin Lee, Dae Hoon Han, Seung Kon Kong
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Patent number: 8541953Abstract: Disclosed herein is a light emitting diode (LED) driving device for driving a multi-channel LED element or an LED array for each channel, the LED driving device including: a constant current driver driving currents flowing in each channel; a first switching unit selectively feeding-back voltage levels of each channel; and a switching controller controlling the turn on/off of the first switching unit, wherein matching characteristics of currents flowing in each channel is improved and a size of an integrated circuit (IC) chip is also reduced as compared to a case according to the related art, thereby making it possible to reduce a production cost and satisfy the trend of miniaturization of the chip, while solving a performance deterioration problem due to degradation of the matching of the currents between the channels.Type: GrantFiled: May 17, 2011Date of Patent: September 24, 2013Assignee: Samsung Electro-Mechanics Co., Ltd.Inventors: Bo Hyun Hwang, Jung Sun Kwon, Jung Hyun Kim, Seung Kon Kong, Jae Shin Lee, Joon Youp Sung
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Patent number: 8525437Abstract: Disclosed herein is a device for controlling current of an LED including a constant current generator, a current mirror, and a current amplifier, the device controlling current of an LED, comprising: a selector outputting an L signal or an H signal according to an input control signal; and a current changing unit formed by connecting at least one switching unit in parallel, the switching unit including a transistor and a switch connected to the transistor in series. The device for controlling current of an LED adjusts current supplied to the current amplifier using a SEL input without an effect of a noise, thereby making it possible to change the current of the LED without separately changing a resistor.Type: GrantFiled: February 16, 2011Date of Patent: September 3, 2013Assignee: Samsung Electro-Mechanics Co., Ltd.Inventors: Joon Youp Sung, Jae Shin Lee, Seung Kon Kong, Jung Sun Kwon, Jung Hyun Kim, Bo Hyun Hwang
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Patent number: 8519637Abstract: There is provided a digital PWM generator according to a first exemplary embodiment of the present invention including: an A/D converter dividing a predetermined reference voltage into a plurality of sections corresponding to a predetermined first set value, searching a section to which the magnitude of an input voltage Vin corresponds, among the plurality of sections, and converting a value corresponding to the searched section into a digital signal; a frequency selector providing a counting number by counting a predetermined high-speed counting clock during a one-cycle section of a predetermined reference clock; and a PWM signal generator converting the digital signal from the A/D converter into a ratio value corresponding to a ratio for the reference voltage and generating a PWM signal having a controlled duty ratio of the reference clock by using the ratio value and the counting number from the frequency selector.Type: GrantFiled: March 23, 2011Date of Patent: August 27, 2013Assignee: Samsung Electro-Mechanics Co., Ltd.Inventors: Jung Hyun Kim, Bo Hyun Hwang, Jung Sun Kwon, Seung Kon Kong, Jae Shin Lee, Joon Youp Sung
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Patent number: 8476938Abstract: The device for generating three mode signals includes: a voltage setting block including an input terminal receiving three input signals of driving voltage, open, and ground and setting three voltages according to the three input signals; and an output block including two output terminals and a second node B receiving the three voltages from the voltage setting block, and outputting three combined signals by comparing an input voltage with a reference voltage, whereby only a small number of resistors and amplifiers generates three mode signals to further reduce the chip size than the related art and the external power source is not required to solve the problems of the related art due to noise.Type: GrantFiled: February 15, 2011Date of Patent: July 2, 2013Assignee: Samsung Electro-Mechanics Co., Ltd.Inventors: Joon Youp Sung, Jung Sun Kwon, Jae Shin Lee, Seung Kon Kong, Jung Hyun Kim, Bo Hyun Hwang
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Patent number: 8421365Abstract: An apparatus for driving a light emitting device (LED) is provided. The apparatus for driving the LED includes a first driving control element, a first current detection unit, a first effective value detection unit, a first reference signal generation unit, and a first comparison unit. The first driving control element controls a current flowing through a first LED channel, in response to a first pulse-width modulated control signal. The first current detection unit detects the current flowing through the first LED channel. The first effective value detection unit detects an effective value of the current detected by the first current detection unit. The first reference signal generation unit generates a preset reference signal having a sawtooth waveform. The first comparison unit compares the reference signal from the first reference signal generation unit with the effective value from the first effective value detection unit.Type: GrantFiled: April 30, 2010Date of Patent: April 16, 2013Assignee: Samsung Electro-Mechanics Co., Ltd.Inventors: Seung Kon Kong, Jae Shin Lee, Jung Hyun Kim, Jung Sun Kwon, Bo Hyun Hwang
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Patent number: 8421369Abstract: The present invention relates to a light emitting diode driver having a protection function that activates hiccup mode for a predetermined period of time when a light emitting diode performs an abnormal operation to thereby protect the light emitting diode. A light emitting diode driver having a protection function according to an aspect of the invention may include: a light emitting unit emitting light; a reference signal generating unit generating a reference signal having pulses with a predetermined period when the light emitting unit performs an abnormal operation; a control unit controlling operating time in hiccup mode according to the reference signal from the reference signal generating unit, the hiccup mode where output is switched on and off at a predetermined period; and a driving unit driving the light emitting unit in the hiccup mode for the operating time determined by the control unit.Type: GrantFiled: October 27, 2009Date of Patent: April 16, 2013Assignee: Samsung Electro-Mechanics Co., Ltd.Inventors: Jeong In Cheon, Byoung Own Min, Yu Jin Jang, Seung Kon Kong