Patents by Inventor Joo Wan HA
Joo Wan HA 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: 20210076467Abstract: Disclosed is a lamp control device. The lamp control device may include: a lamp having an LED channel; a channel resistor corresponding to the LED channel; and a controller configured to boost a channel resistor voltage applied to the channel resistor, and retain a channel current of the LED channel as a target current, using the boosted channel resistor voltage.Type: ApplicationFiled: November 18, 2020Publication date: March 11, 2021Applicant: Silicon Works Co., Ltd.Inventors: Wanyuan Qu, Se Won Lee, Byeong Ho Jeong, Ju Pyo Hong, Ju Hyun Lee, Sung Hwan Kim, Hai Feng Jin, Joo Wan Ha, Tae Young Yoo
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Patent number: 10887962Abstract: Disclosed is a lamp control device. The lamp control device may include: a lamp having an LED channel; a channel resistor corresponding to the LED channel; and a controller configured to boost a channel resistor voltage applied to the channel resistor, and retain a channel current of the LED channel as a target current, using the boosted channel resistor voltage.Type: GrantFiled: December 30, 2015Date of Patent: January 5, 2021Assignee: Silicon Works Co., Ltd.Inventors: Wanyuan Qu, Se Won Lee, Byeong Ho Jeong, Ju Pyo Hong, Ju Hyun Lee, Sung Hwan Kim, Hai Feng Jin, Joo Wan Ha, Tae Young Yoo
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Patent number: 10085313Abstract: Provided is a lighting apparatus. The lighting apparatus may provide an output voltage to lighting loads, and include: a converter configured to generate the output voltage using a driving signal; and a driving circuit configured to provide the driving signal, and spread the frequency of the driving signal by performing frequency dithering on the driving signal while changing the shape of an oscillation signal.Type: GrantFiled: April 1, 2016Date of Patent: September 25, 2018Assignee: SILICON WORKS CO., LTD.Inventors: Tae Young Yoo, Joo Wan Ha, Ju Pyo Hong, Sung Hwan Kim, Hai Feng Jin, Ju Hyun Lee, Wanyuan Qu, Byeong Ho Jeong, Se Won Lee
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Patent number: 10051695Abstract: A lamp control device includes a converter configured to provide an output voltage and an internal voltage; a lamp including an LED module which has a plurality of LED channels, and configured to emit light in correspondence to the output voltage of the converter; and a controller configured to operate by using the internal voltage of the converter, control the output voltage of the converter to be retained at a level equal to or higher than a predetermined level, by using feedback voltages of the plurality of LED channels, and control channel currents of the plurality of LED channels to be regulated in correspondence to memory values which are set in advance.Type: GrantFiled: December 30, 2015Date of Patent: August 14, 2018Assignee: SILICON WORKS CO., LTD.Inventors: Sung Hwan Kim, Joo Wan Ha, Sun Geon Yoo, Hai Feng Jin, Ju Hyun Lee, Wanyuan Qu, Se Won Lee, Byeong Ho Jeong, Ju Pyo Hong
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Patent number: 9986616Abstract: A lamp control device includes a lamp including an LED module which has a plurality of LED channels; and a controller configured to detect respective feedback voltages of the plurality of LED channels, and determine, when at least any one feedback voltage among the feedback voltages is retained to be lower than a predetermined reference voltage and a generation count of an over voltage protection signal reaches a predetermined reference count, an LED channel corresponding to the feedback voltage, as an open.Type: GrantFiled: December 30, 2015Date of Patent: May 29, 2018Assignee: SILICON WORKS CO., LTD.Inventors: Ju Pyo Hong, Joo Wan Ha, Hai Feng Jin, Se Won Lee, Wanyuan Qu, Sung Hwan Kim, Sun Geon Yoo, Byeong Ho Jeong, Ju Hyun Lee
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Patent number: 9955543Abstract: A lamp control device may include: a lamp including an LED module having a plurality of LED channels; a converter configured to receive a voltage corresponding to a turn signal, convert the voltage into an output voltage and internal voltage, and supply the output voltage to the LED module; and a controller configured to start counting a preset delay time when the internal voltage is supplied from the converter, and control the plurality of LED channels to sequentially light up at intervals of the delay time.Type: GrantFiled: January 7, 2016Date of Patent: April 24, 2018Assignees: SILICON WORKS CO., LTD., HYUNDAI IHL CORPORATIONInventors: Ju Pyo Hong, Joo Wan Ha, Sung Hwan Kim, Ju Hyun Lee, Hai Feng Jin, Tae Young Yoo, Wanyuan Qu, Se Won Lee, Byeong Ho Jeong, Hyun Il Park
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Publication number: 20180092172Abstract: Provided is a lighting apparatus. The lighting apparatus may provide an output voltage to lighting loads, and include: a converter configured to generate the output voltage using a driving signal; and a driving circuit configured to provide the driving signal, and spread the frequency of the driving signal by performing frequency dithering on the driving signal while changing the shape of an oscillation signal.Type: ApplicationFiled: April 1, 2016Publication date: March 29, 2018Applicant: SILICON WORKS CO., LTD.Inventors: Tae Young YOO, Joo Wan HA, Ju Pyo HONG, Sung Hwan KIM, Hai Feng JIN, Ju Hyun LEE, Wanyuan QU, Byeong Ho JEONG, Se Won LEE
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Publication number: 20180007756Abstract: A lamp control device may include: a lamp including an LED module having a plurality of LED channels; a converter configured to receive a voltage corresponding to a turn signal, convert the voltage into an output voltage and internal voltage, and supply the output voltage to the LED module; and a controller configured to start counting a preset delay time when the internal voltage is supplied from the converter, and control the plurality of LED channels to sequentially light up at intervals of the delay time.Type: ApplicationFiled: January 7, 2016Publication date: January 4, 2018Applicants: SILICON WORKS CO., LTD., HYUNDAI IHL CORPORATIONInventors: Ju Pyo HONG, Joo Wan HA, Sung Hwan KIM, Ju Hyun LEE, Hai Feng JIN, Tae Young YOO, Wanyuan QU, Se Won LEE, Byeong Ho JEONG, Hyun II PARK
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Publication number: 20170374712Abstract: Disclosed is a lamp control device. The lamp control device may include: a lamp having an LED channel; a channel resistor corresponding to the LED channel; and a controller configured to boost a channel resistor voltage applied to the channel resistor, and retain a channel current of the LED channel as a target current, using the boosted channel resistor voltage.Type: ApplicationFiled: December 30, 2015Publication date: December 28, 2017Applicant: SILICON WORKS CO., LTD.Inventors: Wanyuan QU, Se Won LEE, Byeong Ho JEONG, Ju Pyo HONG, Ju Hyun LEE, Sung Hwan KIM, Hai Feng JIN, Joo Wan HA, Tae Young YOO
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Publication number: 20170359868Abstract: A lamp control device includes a converter configured to provide an output voltage and an internal voltage; a lamp including an LED module which has a plurality of LED channels, and configured to emit light in correspondence to the output voltage of the converter; and a controller configured to operate by using the internal voltage of the converter, control the output voltage of the converter to be retained at a level equal to or higher than a predetermined level, by using feedback voltages of the plurality of LED channels, and control channel currents of the plurality of LED channels to be regulated in correspondence to memory values which are set in advance.Type: ApplicationFiled: December 30, 2015Publication date: December 14, 2017Applicant: SILICON WORKS CO., LTD.Inventors: Sung Hwan KIM, Joo Wan HA, Sun Geon YOO, Hai Feng JIN, Ju Hyun LEE, Wanyuan QU, Se Won LEE, Byeong Ho JEONG, Ju Pyo HONG
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Publication number: 20170303352Abstract: A lamp control device includes a lamp including an LED module which has a plurality of LED channels; and a controller configured to detect respective feedback voltages of the plurality of LED channels, and determine, when at least any one feedback voltage among the feedback voltages is retained to be lower than a predetermined reference voltage and a generation count of an over voltage protection signal reaches a predetermined reference count, an LED channel corresponding to the feedback voltage, as an open.Type: ApplicationFiled: December 30, 2015Publication date: October 19, 2017Applicant: SILICON WORKS CO., LTD.Inventors: Ju Pyo HONG, Joo Wan HA, Hai Feng JIN, Se Won LEE, Wanyuan QU, Sung Hwan KIM, Sun Geon YOO, Byeong Ho JEONG, Ju Hyun LEE