Patents by Inventor Se Hwan Kim
Se Hwan Kim 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: 20150356748Abstract: Disclosed are an apparatus for sensing a moving golf ball and a method for sensing the moving golf ball using the apparatus. The apparatus includes an image acquisition unit for acquiring consecutive images of a ball, an image processing unit for extracting a feature portion of the ball from the acquired images, and a spin calculation unit for performing any one of forward operation analysis and inverse operation analysis to calculate spin of the ball.Type: ApplicationFiled: January 8, 2014Publication date: December 10, 2015Inventor: Se Hwan KIM
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Publication number: 20150350609Abstract: Provided are an apparatus and method for sensing a moving ball, which extract a feature portion such as a trademark, a logo, etc. indicated on a ball from consecutive images of a moving ball, acquired by an image acquisition unit embodied by a predetermined camera device, and calculate a spin axis and spin amount of rotation the moving ball based on the feature portion and thus spin of the ball is simply, rapidly, and accurately calculated with low computational load, thereby achieving rapid and stable calculation of the ball in a relatively low performance system. The sensing apparatus includes an image acquisition unit for acquiring consecutive images, an image processing unit for extracting a feature portion from the acquired image, and a spin calculation unit for calculating spin using the extracted feature portion.Type: ApplicationFiled: January 8, 2014Publication date: December 3, 2015Applicant: GOLFZON Co., Ltd.Inventor: Se Hwan KIM
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Patent number: 8994304Abstract: Disclosed is a method for controlling a permanent magnet synchronous motor to maximize use of voltages of a battery by voltage phase control within weak magnetic flux area and to achieve compensation for a torque error through a torque compensator when driving the permanent magnet synchronous motor for hybrid vehicles. In particular, the method controls a permanent magnet synchronous motor so that voltage use can be maximized in a weak magnetic flux area by using voltage near maximum voltage through voltage phase control utilizing magnetic flux-based map data receiving a torque command and motor speed/batter output voltage as inputs and torque error can be compensated using a torque compensation filter when a motor constant is changed in the weak magnetic flux by a circumstance parameter, when the permanent magnet synchronous motor mounted in a hybrid vehicle and an electric vehicle is driven.Type: GrantFiled: October 17, 2012Date of Patent: March 31, 2015Assignees: Hyundai Motor Company, Kia Motors Corporation, Industry-Academic Cooperation Foundation, Yeungnam UniversityInventors: Su Hyun Bae, Sung Kyu Kim, Won Kyoung Choi, Mu Shin Kwak, Jul Ki Seok, Se Hwan Kim
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Publication number: 20130328508Abstract: Disclosed is a method for controlling a permanent magnet synchronous motor to maximize use of voltages of a battery by voltage phase control within weak magnetic flux area and to achieve compensation for a torque error through a torque compensator when driving the permanent magnet synchronous motor for hybrid vehicles. In particular, the method controls a permanent magnet synchronous motor so that voltage use can be maximized in a weak magnetic flux area by using voltage near maximum voltage through voltage phase control utilizing magnetic flux-based map data receiving a torque command and motor speed/batter output voltage as inputs and torque error can be compensated using a torque compensation filter when a motor constant is changed in the weak magnetic flux by a circumstance parameter, when the permanent magnet synchronous motor mounted in a hybrid vehicle and an electric vehicle is driven.Type: ApplicationFiled: October 17, 2012Publication date: December 12, 2013Applicants: Hyundai Motor Company, Industry-Academic Cooperation Foundation, Yeungnam University, Kia Motors CorporationInventors: Su Hyun Bae, Sung Kyu Kim, Won Kyoung Choi, Mu Shin Kwak, Jul Ki Seok, Se Hwan Kim
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Patent number: 7944415Abstract: Disclosed are an Organic Light Emitting Diode (OLED) display device having a pixel circuit which use a thin film transistor (TFT) as an active device and a driving method thereof. The OLED display device can constantly obtain luminance of the light emitting elements by elapsed time, because the brightness of the pixel for the signal voltage is not varied by a characteristic variance of the transistor (e.g., a driving element) and the OLED. Accordingly, the OLED display device according to the present invention can minimizes the variance of the pixel brightness due to deterioration of the transistor and the OLED caused by usage for a long time and increase life span of the display device. Further, the OLED display device can display high quality of the image even in case of the high precision display, because it is controlled to flow the current to OLED included in each pixel.Type: GrantFiled: April 3, 2006Date of Patent: May 17, 2011Assignee: Silicon Display Technology Co., Ltd.Inventors: Jin Jang, Ji-Ho Hur, Se-Hwan Kim, Youn-Duck Nam
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Patent number: 7884810Abstract: Unevenness detecting apparatus for compensating for threshold voltage and method thereof is provided with a plurality of scan lines and a plurality of data lines and a pixel circuit arranged in each point which the scan lines and the data lines are intersected. The unevenness detecting apparatus for compensating for the threshold voltage and method thereof may accurately sense a state of minute unevenness such as fingerprints by using an active element (e.g., TFT) as an element of which pixel circuit is composed.Type: GrantFiled: April 3, 2006Date of Patent: February 8, 2011Assignee: Silicon Display Technology Co., Ltd.Inventors: Jin Jang, Ji-Ho Hur, Se-Hwan Kim, Seung-Hyun Park
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Patent number: 7725135Abstract: A mobile terminal and sound pressure control method using sound saturation sensing are disclosed. The mobile terminal has a target digital value of an adequate output sound pressure level at a maximum volume level. The sound pressure control method includes: determining a digital value corresponding to a maximum output sound pressure level of an externally sourced audio material, wherein the externally sourced audio material is being replayed for the first time at a preset gain at the maximum volume level; comparing the determined digital value with the target digital value; adjusting, if the determined digital value is not equal to the target digital value, the gain so that a digital value corresponding to the adjusted gain is equal to the target digital value; and storing the adjusted gain as a gain value associated with the maximum volume level for the externally sourced audio material.Type: GrantFiled: March 21, 2007Date of Patent: May 25, 2010Assignee: Samsung Electronics Co., LtdInventors: Se Hwan Kim, Myoung Woo Han
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Patent number: 7688370Abstract: Disclosed is an active pixel sensor array, which can reduce the number of elements and the size of capacitors by enabling a reset switching transistor to include a function of an optical sensor and to reset a pixel voltage with a power supply voltage VDD after a gate selection signal is outputted, and to reset a pixel voltage with a power supply voltage VDD by a coupling function in case that a gate selection signal is outputted.Type: GrantFiled: December 6, 2005Date of Patent: March 30, 2010Assignee: Silicon Display Technology Co., Ltd.Inventors: Ji-Ho Hur, Se-Hwan Kim, Jin Jang
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Publication number: 20100053999Abstract: The present invention relates to a switching mode power supply and a driving method thereof. In the present invention, a supply voltage is generated by using a start voltage that corresponds to input power, and a switching operation frequency of a power switch is changed according to an increase/decrease of the supply voltage.Type: ApplicationFiled: August 20, 2009Publication date: March 4, 2010Inventors: Kyung-Oun JANG, Gyoung-Soo PARK, Hyeong-Seok BAEK, Se-Hwan KIM
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Patent number: 7442588Abstract: Disclosed is a method for fabricating a thin film transistor. Specifically, the method uses local oxidation wherein a portion of a transparent metal oxide layer is locally oxidized to be converted into a semiconductor layer so that the oxidized portion of the transparent metal oxide layer can be used as a channel region and the unoxidized portions of the transparent metal oxide layer can be used as source and drain electrodes. The method comprises the steps of forming a gate electrode on a substrate and forming a gate insulating layer thereon, forming a transparent metal oxide layer on the gate insulating layer, forming an oxidation barrier layer on the transparent metal oxide layer in such a manner that a portion of the transparent metal oxide layer positioned over the gate electrode is exposed, and locally oxidizing only the exposed portion of the transparent metal oxide layer to convert the exposed portion into a semiconductor layer.Type: GrantFiled: July 30, 2007Date of Patent: October 28, 2008Assignee: Silicon Display Technology Co., Ltd.Inventors: Jin Jang, Se-Hwan Kim, Youn-Duck Nam, Eung-Bum Kim, Ji-Ho Hur
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Publication number: 20080206935Abstract: Disclosed is a method for fabricating a thin film transistor. Specifically, the method uses local oxidation wherein a portion of a transparent metal oxide layer is locally oxidized to be converted into a semiconductor layer so that the oxidized portion of the transparent metal oxide layer can be used as a channel region and the unoxidized portions of the transparent metal oxide layer can be used as source and drain electrodes. The method comprises the steps of forming a gate electrode on a substrate and forming a gate insulating layer thereon, forming a transparent metal oxide layer on the gate insulating layer, forming an oxidation barrier layer on the transparent metal oxide layer in such a manner that a portion of the transparent metal oxide layer positioned over the gate electrode is exposed, and locally oxidizing only the exposed portion of the transparent metal oxide layer to convert the exposed portion into a semiconductor layer.Type: ApplicationFiled: July 30, 2007Publication date: August 28, 2008Inventors: Jin JANG, Se-Hwan Kim, Youn-Duck Nam, Eung-Bum Kim, Ji-Ho Hur
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Publication number: 20080070531Abstract: A mobile terminal and sound pressure control method using sound saturation sensing are disclosed. The mobile terminal has a target digital value of an adequate output sound pressure level at a maximum volume level. The sound pressure control method includes: determining a digital value corresponding to a maximum output sound pressure level of an externally sourced audio material, wherein the externally sourced audio material is being replayed for the first time at a preset gain at the maximum volume level; comparing the determined digital value with the target digital value; adjusting, if the determined digital value is not equal to the target digital value, the gain so that a digital value corresponding to the adjusted gain is equal to the target digital value; and storing the adjusted gain as a gain value associated with the maximum volume level for the externally sourced audio material.Type: ApplicationFiled: March 21, 2007Publication date: March 20, 2008Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Se Hwan Kim, Myoung Woo Han
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Patent number: 7253814Abstract: Disclosed is an apparatus and method for driving a plurality of displays in a computer system. The apparatus can include a checking circuit for checking inherent control information of the displays, and an output circuit for confirming a brightness control information corresponding to the inherent control information of the checked display among preset brightness control information to output an information to control the display at a brightness of the corresponding display. A conversion circuit can supply an information to drive a corresponding display based on the output information of the output circuit.Type: GrantFiled: July 30, 2003Date of Patent: August 7, 2007Assignee: LG Electronics Inc.Inventors: Se Hwan Kim, Jong Hyun Woo
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Publication number: 20070024546Abstract: Unevenness detecting apparatus for compensating for threshold voltage and method thereof is provided with a plurality of scan lines and a plurality of data lines and a pixel circuit arranged in each point which the scan lines and the data lines are intersected. The unevenness detecting apparatus for compensating for the threshold voltage and method thereof may accurately sense a state of minute unevenness such as fingerprints by using an active element (e.g., TFT) as an element of which pixel circuit is composed.Type: ApplicationFiled: April 3, 2006Publication date: February 1, 2007Inventors: Jin Jang, Ji-Ho Hur, Se-Hwan Kim, Seung-Hyun Park
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Publication number: 20070024547Abstract: Disclosed are an Organic Light Emitting Diode (OLED) display device having a pixel circuit which use a thin film transistor (TFT) as an active device and a driving method thereof. The OLED display device can constantly obtain luminance of the light emitting elements by elapsed time, because the brightness of the pixel for the signal voltage is not varied by a characteristic variance of the transistor (e.g., a driving element) and the OLED. Accordingly, the OLED display device according to the present invention can minimizes the variance of the pixel brightness due to deterioration of the transistor and the OLED caused by usage for a long time and increase life span of the display device. Further, the OLED display device can display high quality of the image even in case of the high precision display, because it is controlled to flow the current to OLED included in each pixel.Type: ApplicationFiled: April 3, 2006Publication date: February 1, 2007Inventors: Jin Jang, Ji-Ho Hur, Se-Hwan Kim, Youn-Duck Nam
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Publication number: 20060119718Abstract: Disclosed is an active pixel sensor array, which can reduce the number of elements and the size of capacitors by enabling a reset switching transistor to include a function of an optical sensor and to reset a pixel voltage with a power supply voltage VDD after a gate selection signal is outputted, and to reset a pixel voltage with a power supply voltage VDD by a coupling function in case that a gate selection signal is outputted.Type: ApplicationFiled: December 6, 2005Publication date: June 8, 2006Inventors: Ji-Ho Hur, Se-Hwan Kim, Jin Jang
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Patent number: 6812649Abstract: A backlight control device and method of an LCD can reduce or minimize the battery usage by a backlight lamp while maintaining the brightness of a reflective LCD at an adequate level by operating backlight control using intensity of detected surrounding light within a selected control range from a plurality of backlight control ranges. The backlight control ranges can vary in number but are directed into various levels, according to the intensity of surrounding light and use of a battery or an external power source.Type: GrantFiled: June 21, 2002Date of Patent: November 2, 2004Assignee: LG Electronics Inc.Inventor: Se Hwan Kim
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Publication number: 20040036697Abstract: Disclosed is an apparatus and method for driving a plurality of displays in a computer system. The apparatus can include a checking circuit for checking inherent control information of the displays, and an output circuit for confirming a brightness control information corresponding to the inherent control information of the checked display among preset brightness control information to output an information to control the display at a brightness of the corresponding display. A conversion circuit can supply an information to drive a corresponding display based on the output information of the output circuit.Type: ApplicationFiled: July 30, 2003Publication date: February 26, 2004Applicant: LG Electronics Inc.Inventors: Se Hwan Kim, Jong Hyun Woo
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Publication number: 20020195954Abstract: A backlight control device and method of an LCD can reduce or minimize the battery usage by a backlight lamp while maintaining the brightness of a reflective LCD at an adequate level by operating backlight control using intensity of detected surrounding light within a selected control range from a plurality of backlight control ranges. The backlight control ranges can vary in number but are directed into various levels, according to the intensity of surrounding light and use of a battery or an external power source.Type: ApplicationFiled: June 21, 2002Publication date: December 26, 2002Inventor: Se Hwan Kim