Patents by Inventor Doo-Hwan Oh
Doo-Hwan Oh 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: 11940932Abstract: Provided is an operating method of a storage device. The method includes providing temperature information of each of a plurality of volatile memory devices in the storage device to a host device; and receiving a setting command related to a refresh operation of the plurality of volatile memory devices from the host device, wherein the plurality of volatile memory devices are classified into groups based on temperature information, and wherein the setting command indicates a number of rows of the plurality of volatile memory devices to be refreshed differently for each of the groups based on the temperature information.Type: GrantFiled: June 28, 2021Date of Patent: March 26, 2024Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Doo Hwan Oh, Seung-Hun Lee, Jin Hun Jeong, Chang Ho Yun, Kyung-Hee Han
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Publication number: 20220147277Abstract: Provided is an operating method of a storage device. The method includes providing temperature information of each of a plurality of volatile memory devices in the storage device to a host device; and receiving a setting command related to a refresh operation of the plurality of volatile memory devices from the host device, wherein the plurality of volatile memory devices are classified into groups based on temperature information, and wherein the setting command indicates a number of rows of the plurality of volatile memory devices to be refreshed differently for each of the groups based on the temperature information.Type: ApplicationFiled: June 28, 2021Publication date: May 12, 2022Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Doo Hwan Oh, Seung-Hun Lee, Jin Hun Jeong, Chang Ho Yun, Kyung-Hee Han
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Patent number: 10003626Abstract: The present invention relates to an adaptive real-time transcoding method and a streaming server therefor to improve service quality by minimizing the disconnection of images in an environment, such as a mobile device, through adaptively changing a set value of a transcoding operation on a media streaming service to match a network environment. The adaptive real-time transcoding method of the present invention is a real-time transcoding method for sequentially transmitting a media data segment, divided and transcoded, in a streaming server to the client side over a network, the method comprising the steps of: determining the fill level of a client-side playback buffer; determining, on the basis of the fill level of the playback buffer, the image quality of media data segments that are not transmitted to the client side; and transcoding the non-transmitted media data segments according to the determined image quality.Type: GrantFiled: October 22, 2014Date of Patent: June 19, 2018Assignee: INDUSTRY-ACADEMIC COOPERATION FOUNDATION, YONSEI UNIVERSITYInventors: Sung Ho Kim, Keun Baek Park, Joon Kee Chang, Sung Tak Cho, Won Woo Ro, Doo Hwan Oh, Keun Soo Kim, Young Jae Cho
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Patent number: 9971549Abstract: In a method of operating a memory device, a first write command, a first write address, and first write data are received by a first memory device through a channel. The first write command, received by the first memory device, is sensed by a controller. The controller is connected to the channel and controls a second memory device. The first memory device and the second memory device are different types of memory devices. When the first write command is sensed by the controller, a first write log is generated using the first write address and the first write data. The first write log is stored into a buffer.Type: GrantFiled: April 19, 2017Date of Patent: May 15, 2018Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Doo-Hwan Oh, Yong-Jun Yu, In-Su Choi
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Patent number: 9855320Abstract: The present invention provides a pharmaceutical composition for the prevention or treatment of glaucoma, wherein the pharmaceutical composition includes angiogenin or a fragment thereof as an active ingredient. Angiogenin or a fragment thereof according to the present invention activates aqueous humor outflow due to NO generation increase, Schlemm's canal expansion, and intercellular interval widening, thereby reducing intraocular pressure. Accordingly, angiogenin and a fragment may be useful for the prevention and treatment of glaucoma.Type: GrantFiled: February 27, 2012Date of Patent: January 2, 2018Assignee: CHUNG-ANG UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATIONInventors: Jae Chan Kim, Doo Hwan Oh, Kwang Sic Joo, Yeoun Sook Chun, Sung Wook Wee, Kyoung Woo Kim
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Publication number: 20170344311Abstract: In a method of operating a memory device, a first write command, a first write address, and first write data are received by a first memory device through a channel. The first write command, received by the first memory device, is sensed by a controller. The controller is connected to the channel and controls a second memory device. The first memory device and the second memory device are different types of memory devices. When the first write command is sensed by the controller, a first write log is generated using the first write address and the first write data. The first write log is stored into a buffer.Type: ApplicationFiled: April 19, 2017Publication date: November 30, 2017Inventors: DOO-HWAN OH, YONG-JUN YU, IN-SU CHOI
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Publication number: 20160269462Abstract: The present invention relates to an adaptive real-time transcoding method and a streaming server therefor to improve service quality by minimizing the disconnection of images in an environment, such as a mobile device, through adaptively changing a set value of a transcoding operation on a media streaming service to match a network environment. The adaptive real-time transcoding method of the present invention is a real-time transcoding method for sequentially transmitting a media data segment, divided and transcoded, in a streaming server to the client side over a network, the method comprising the steps of: determining the fill level of a client-side playback buffer; determining, on the basis of the fill level of the playback buffer, the image quality of media data segments that are not transmitted to the client side; and transcoding the non-transmitted media data segments according to the determined image quality.Type: ApplicationFiled: October 22, 2014Publication date: September 15, 2016Applicant: INDUSTRY-ACADEMIC COOPERATION FOUNDATION, YONSEI U NIVERSITYInventors: Sung Ho KIM, Keun Baek PARK, Joon Kee CHANG, Sung Tak CHO, Won Woo RO, Doo Hwan OH, Keun Soo KIM, Young Jae CHO
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Publication number: 20140370087Abstract: The present invention provides a pharmaceutical composition for the prevention or treatment of glaucoma, wherein the pharmaceutical composition includes angiogenin or a fragment thereof as an active ingredient. Angiogenin or a fragment thereof according to the present invention activates aqueous humor outflow due to NO generation increase, Schlemm's canal expansion, and intercellular interval widening, thereby reducing intraocular pressure. Accordingly, angiogenin and a fragment may be useful for the prevention and treatment of glaucoma.Type: ApplicationFiled: February 27, 2012Publication date: December 18, 2014Applicant: CHUNG-ANG UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATIONInventors: Jae Chan Kim, Doo Hwan Oh, Kwang Sic Joo, Yeoun Sook Chun, Sung Wook Wee, Kyoung Woo Kim
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Patent number: 5764868Abstract: A video signal printing device includes analog-to-digital converting mechanisms for converting a composite video signal into digital video data and signal separating mechanisms for separating horizontal/vertical sync signals from the composite video signal.Type: GrantFiled: December 30, 1996Date of Patent: June 9, 1998Assignee: SamSung Electronics Co., Ltd.Inventors: Jun-keun Yum, Doo-hwan Oh
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Patent number: 5683220Abstract: A truck for use in an auto tray changer capable of supplying and discharging a plurality of trays into and from the auto tray changer all at once, respectively, includes a loading portion having a bottom plate, in which the trays for loading working pieces or worked pieces are stacked, each corner of the bottom plate being provided with a wheel, respectively, which is capable of freely rotating, a pair of rail portions for transporting the trays stacked thereon back and forth on the bottom plate, a pair of stopper means mounted at front of each of the rail potions for selectively transporting the tray stacked at the bottom of the stack on the bottom plate, and a handle portion mounted at back of the loading portion.Type: GrantFiled: May 14, 1996Date of Patent: November 4, 1997Assignee: Daewoo Electronics Co., Ltd.Inventors: Doo-Hwan Oh, Jong-Kun Jung