Patents by Inventor Jeong Hwan Cho
Jeong Hwan Cho 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: 12227247Abstract: An apparatus for supporting a vehicle body during assembly includes a support frame, at least one first vehicle body supporting portion installed on a front portion of the support frame to be movable in a vehicle width direction, at least one first position adjustment unit installed on the front portion of the support frame and configured to manually vary a position of a corresponding first vehicle body supporting portion, at least one second vehicle body supporting portion installed on a rear portion of the support frame to be capable of clamping, and at least one second position adjustment unit installed on the rear portion of the support frame and configured to manually vary a position in a vehicle length direction of a corresponding second vehicle body supporting portion.Type: GrantFiled: September 29, 2022Date of Patent: February 18, 2025Assignees: HYUNDAI MOTOR COMPANY, KIA CORPORATIONInventors: Min Ick Cho, Jungmin Kang, Jeong Hwan Ha, Suwhan Kim
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Publication number: 20250037622Abstract: A display device includes a driving frequency calculator configured to divide output image data into central, intermediate, and peripheral images respectively corresponding to central, intermediate, and peripheral visual field regions, calculate spatial frequencies of the central image, the intermediate image, and the peripheral image, calculate critical flicker frequencies of the central visual field region, the intermediate visual field region, and the peripheral visual field region based on the spatial frequencies and based on viewing angles of the central visual field region, the intermediate visual field region, and the peripheral visual field region, and determine driving frequencies of the central visual field region, the intermediate visual field region, and the peripheral visual field region based on the critical flicker frequencies, and a display panel configured to display an image based on the output image data and based on the driving frequencies.Type: ApplicationFiled: April 11, 2024Publication date: January 30, 2025Inventors: HYUNGSUK HWANG, YOURA KIM, HYOSUN KIM, Cheong Il KIM, Jeong Hyeon PARK, Sang Chul CHONG, Ji Eun CHO, Jeung Hwan CHOI
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Patent number: 10591683Abstract: The present invention relates generally to a passive optical network (PON)-based video overlay pluggable type optical network device that is easily connected and detached from an indoor optical network terminal (ONT) at a subscriber side, which transmits and receives an optical signal in which a video RF optical signal and a PON optical signal are overlaid, wherein a PON board for receiving and processing the PON optical signals and a video RF board for receiving and processing the video RF optical signals are easily removed for replacement from a housing including an optical sub-assembly (OSA), which separates the PON optical signal and the video RF optical signal, and the PON board and the video RF board are individually designed and configured in a removable manner so that interference between the signals is minimized and selective combinations and production are possible according to various types of PONs and video services.Type: GrantFiled: November 20, 2018Date of Patent: March 17, 2020Assignee: LIGHTRON FIGER-OPTIC DEVICES INC.Inventors: Hyun-Won Cha, Keun-Jae Park, Jeong-Hwan Cho, Oh-Sang Kwon, Hyun-Jong Youm, Seong-Seok Seo, Young-Un Heo
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Publication number: 20190324219Abstract: The present invention relates generally to a passive optical network (PON)-based video overlay pluggable type optical network device that is easily connected and detached from an indoor optical network terminal (ONT) at a subscriber side, which transmits and receives an optical signal in which a video RF optical signal and a PON optical signal are overlaid, wherein a PON board for receiving and processing the PON optical signals and a video RF board for receiving and processing the video RF optical signals are easily removed for replacement from a housing including an optical sub-assembly (OSA), which separates the PON optical signal and the video RF optical signal, and the PON board and the video RF board are individually designed and configured in a removable manner so that interference between the signals is minimized and selective combinations and production are possible according to various types of PONs and video services.Type: ApplicationFiled: November 20, 2018Publication date: October 24, 2019Applicant: LIGHTRON FIBER-OPTIC DEVICES INC.Inventors: Hyun-Won CHA, Keun-Jae PARK, Jeong-Hwan CHO, Oh-Sang KWON, Hyun-Jong YOUM, Seong-Seok SEO, Young-Un HEO
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Patent number: 10243693Abstract: The present invention relates to an optical transceiver using FEC, an optical transceiving system comprising the same, and a remote optical wavelength control method and, specifically, to an optical transceiver using FEC, the optical transceiver comprising: a laser diode driver (LDD) for driving a laser diode (LD) for outputting light; a transmitter optical sub-assembly (TOSA) for transmitting an optical signal received from the LD driver; a receiver optical sub-assembly (ROSA) for receiving the optical signal from the transmitter optical sub-assembly; a micro controller unit (MCU) for controlling the transmitter optical sub-assembly and the receiver optical sub-assembly and analyzing the optical signal; and a forward error correction (FEC) which is controlled by the micro controller unit and generates the optical signal by including, in an overhead excess data frame, control or monitoring request information of a subscriber-side base station.Type: GrantFiled: December 11, 2015Date of Patent: March 26, 2019Assignee: LIGHTHORN FIBER-OPTIC DEVICES INC.Inventors: Kang-Yong Jung, Jeong-Hwan Cho, Soo Yuk, Young Jae Nam
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Publication number: 20170353268Abstract: The present invention relates to an optical transceiver using FEC, an optical transceiving system comprising the same, and a remote optical wavelength control method and, specifically, to an optical transceiver using FEC, the optical transceiver comprising: a laser diode driver (LDD) for driving a laser diode (LD) for outputting light; a transmitter optical sub-assembly (TOSA) for transmitting an optical signal received from the LD driver; a receiver optical sub-assembly (ROSA) for receiving the optical signal from the transmitter optical sub-assembly; a micro controller unit (MCU) for controlling the transmitter optical sub-assembly and the receiver optical sub-assembly and analyzing the optical signal; and a forward error correction (FEC) which is controlled by the micro controller unit and generates the optical signal by including, in an overhead excess data frame, control or monitoring request information of a subscriber-side base station.Type: ApplicationFiled: December 11, 2015Publication date: December 7, 2017Inventors: Kang-Yong JUNG, Jeong-Hwan CHO, Soo YUK, Young Jae NAM
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Patent number: 8554000Abstract: An image forming apparatus and an image forming method thereof are provided. An image forming apparatus according to an exemplary embodiment of the present general inventive concept comprises a decoder to decode a compressed image to convert the compressed image into image data, a pure black determining unit to determine whether the image data is pure black by using information of the converted image data, a section classifying unit to classify the image data into a text section and an image section by using a result of the pure black determination, and a color coordinate converter to perform color coordinate conversion on the image section of the classified sections. Therefore, it is possible to improve readability of black text.Type: GrantFiled: January 14, 2008Date of Patent: October 8, 2013Assignee: Samsung Electronics Co., LtdInventors: Jeong-hwan Cho, Ki-min Kang
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Image forming apparatus analyzing color chrominance data to determine type of document to be printed
Patent number: 8395818Abstract: An image forming apparatus and a method of controlling the same in which input image data is divided into blocks and color chrominance data of each block is analyzed thereby perform a print job by automatically detecting whether an image should be print in color or pure black.Type: GrantFiled: May 2, 2012Date of Patent: March 12, 2013Assignee: Samsung Electronics Co., Ltd.Inventor: Jeong Hwan Cho -
Publication number: 20120212785Abstract: An image forming apparatus and a method of controlling the same in which input image data is divided into blocks and color chrominance data of each block is analyzed thereby perform a print job by automatically detecting whether an image should be print in color or pure black.Type: ApplicationFiled: May 2, 2012Publication date: August 23, 2012Inventor: Jeong Hwan CHO
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Patent number: 8194284Abstract: An image forming apparatus and a method of controlling the same in which input image data is divided into blocks and color chrominance data of each block is analyzed thereby perform a print job by automatically detecting whether an image should be print in color or pure black.Type: GrantFiled: February 22, 2008Date of Patent: June 5, 2012Assignee: Samsung Electronics Co., Ltd.Inventor: Jeong Hwan Cho
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Publication number: 20080317360Abstract: An image forming apparatus and an image forming method thereof are provided. An image forming apparatus according to an exemplary embodiment of the present general inventive concept comprises a decoder to decode a compressed image to convert the compressed image into image data, a pure black determining unit to determine whether the image data is pure black by using information of the converted image data, a section classifying unit to classify the image data into a text section and an image section by using a result of the pure black determination, and a color coordinate converter to perform color coordinate conversion on the image section of the classified sections. Therefore, it is possible to improve readability of black text.Type: ApplicationFiled: January 14, 2008Publication date: December 25, 2008Applicant: Samsung Electronics Co., Ltd.Inventors: Jeong-hwan CHO, Ki-min Kang
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Publication number: 20080204810Abstract: An image forming apparatus and a method of controlling the same in which input image data is divided into blocks and color chrominance data of each block is analyzed thereby perform a print job by automatically detecting whether an image should be print in color or pure black.Type: ApplicationFiled: February 22, 2008Publication date: August 28, 2008Applicant: Samsung Electronics Co., Ltd.Inventor: Jeong Hwan CHO
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Publication number: 20070086662Abstract: An apparatus and method are provided for processing image data using error diffusion. The apparatus and method decode image data compressed in a joint photographic experts group (JPEG) format, convert the image data into color coordinates without storing the image data in a memory, and perform a binarization by calculating error values in accordance with the image data in the unit of block to generate a final output data which is 1 bit long. Since the apparatus and method for processing image data using error diffusion do not require an operation of transmitting and storing the image data to a system memory through a DMA controller, the performance of a system is improved. Also, since the memory does not require a large storage space to store the decoded image data, its utility is improved.Type: ApplicationFiled: September 19, 2006Publication date: April 19, 2007Inventors: Jeong-Hwan Cho, Eul-Hwan Lee, Won-Kyoung Cho