Patents by Inventor Tack Don Han
Tack Don Han 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: 9355491Abstract: An image processing apparatus is provided. A splitting unit of the image processing apparatus may split a first space within an input three-dimensional (3D) model into a plurality of subspaces in order to generate an acceleration structure of the input 3D model. A decision unit of the image processing apparatus may set a subspace determined as having a relatively high probability of including a ray progress path among the plurality of subspaces, as a child node having a relatively high traversal priority in the acceleration structure among a plurality of child nodes.Type: GrantFiled: June 22, 2011Date of Patent: May 31, 2016Assignees: Samsung Electronics Co., Ltd., INDUSTRY-ACADEMIC COOPERATION FOUNDATION, YONSEI UNIVERSITYInventors: Chan Min Park, Tack Don Han, Jin Woo Kim, Jeong Soo Park, Jae Ho Nah
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Patent number: 9342919Abstract: An image rendering apparatus may include a buffer memory unit and a processor. The buffer memory unit may store input ray data for image rendering according to a ray tracing scheme while shape data corresponding to the input ray data is being fetched from a cache. The processor may output the received shape data together with the input ray data to an operation apparatus.Type: GrantFiled: June 7, 2011Date of Patent: May 17, 2016Assignees: Samsung Electronics Co., Ltd., Industry-Academic Cooperation Foundation, Yonsei UniversityInventors: Chan Min Park, Jae Ho Nah, Tack Don Han, Jeong Soo Park
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Patent number: 9013495Abstract: A rendering apparatus and method are provided. The rendering method includes: reading a block, corresponding to a fragment, from among compressed blocks stored in a depth buffer, by considering frequency information corresponding to the fragment and prepared in advance; and performing a depth test for the fragment by considering the restored block.Type: GrantFiled: April 14, 2008Date of Patent: April 21, 2015Assignees: Samsung Electronics Co., Ltd., Yonsei University Industry FoundationInventors: Sang-oak Woo, Seok-yoon Jung, Kwon-taek Kwon, Tack-don Han, Woo-chan Park, Woo-nam Chung, Jin-hong Park, Jeong-soo Park
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Patent number: 8963920Abstract: Provided is an image processing apparatus. The image processing apparatus may perform an intersection test for rendering of a ray tracing scheme. The image processing apparatus may include a first calculator and a second calculator. The first calculator may perform a ray-plane test to determine whether a ray intersects a plane including a primitive and a barycentric test to determine whether the ray intersects the primitive. The second calculator may calculate a hit point based on the ray which intersects the primitive.Type: GrantFiled: June 6, 2011Date of Patent: February 24, 2015Assignees: Samsung Electronics Co., Ltd., Industry-Academic Cooperation Foundation, Yonsei UniversityInventors: Chan Min Park, Tack Don Han, Jeong Soo Park, Jae Ho Nah, Yun Hye Jung
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Publication number: 20140168267Abstract: A projection-based augmented reality system and a control method thereof are provided. The control method of an augmented reality system includes determining a conversion area to be converted from a work area based on a first gesture, acquiring a captured image of the determined conversion area, generating a virtual image of the determined conversion area from the acquired captured image, displaying the generated virtual image in the work area, and performing a manipulation function with respect to the displayed virtual image based on a second gesture.Type: ApplicationFiled: December 11, 2013Publication date: June 19, 2014Applicant: Samsung Electronics Co., Ltd.Inventors: Hark-Joon KIM, Tack-Don HAN, Ha-Young KIM, Jong-Hoon SEO, Seung-Ho CHAE
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Publication number: 20140119647Abstract: Provided are a method and apparatus for decoding a mixed code that is a combination of first and second code images. In the method, a mixed code image is obtained by receiving the original image having the mixed code image and removing noise from the original image. Next, the colors, shades, and brightnesses of pixels of the mixed code image are categorized into groups based on a predetermined threshold, the mixed code image is divided into first and second code images, and first and second information are extracted by decoding the first and second code images, respectively. The first and second code images can be effectively decoded by decoding interpretation information, construction information, error control information, and code direction information stored in the first and/or second code images.Type: ApplicationFiled: March 18, 2013Publication date: May 1, 2014Inventors: Cheol Ho Cheong, Tack Don Han, Jong Young Kim, Eui Jae Kim, Seong Hun Jeong, Jae Yun Kim, Han Yeong Choi
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Publication number: 20130221105Abstract: A mixed code, and a method and apparatus for encoding the same are provided. The mixed code includes a first code image region storing a first code image obtained by encoding first information using color, shading, or a combination thereof, and a second code image region storing a second code image obtained by encoding second information using color, shading, or a combination thereof. The first code image and/or the second code image includes the results of encoding interpretation information, construction information, error control information, and code direction information. The mixed code is made by adjusting the difference in color and brightness between the first and second code images to a predetermined level and combining these images.Type: ApplicationFiled: August 31, 2012Publication date: August 29, 2013Applicant: Colorzip Media, Inc.Inventors: Cheol Ho Cheong, Tack Don Han, Jong Young Kim, Eui Jae Kim, Seong Hun Jeong, Jae Yun Kim, Han Yeong Choi
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Publication number: 20130148888Abstract: A mixed code, and a method and apparatus for encoding the same are provided. The mixed code includes a first code image region storing a first code image obtained by encoding first information using color, shading, or a combination thereof, and a second code image region storing a second code image obtained by encoding second information using color, shading, or a combination thereof. The first code image and/or the second code image includes the results of encoding interpretation information, construction information, error control information, and code direction information. The mixed code is made by adjusting the difference in color and brightness between the first and second code images to a predetermined level and combining these images.Type: ApplicationFiled: August 30, 2012Publication date: June 13, 2013Applicant: Colorzip Media, Inc.Inventors: Cheol Ho Cheong, Tack Don Han, Jong Young Kim, Eui Jae Kim, Seong Hun Jeong, Jae Yun Kim, Han Yeong Choi
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Publication number: 20130136361Abstract: A mixed code, and a method and apparatus for encoding the same are provided. The mixed code includes a first code image region storing a first code image obtained by encoding first information using color, shading, or a combination thereof, and a second code image region storing a second code image obtained by encoding second information using color, shading, or a combination thereof. The first code image and/or the second code image includes the results of encoding interpretation information, construction information, error control information, and code direction information. The mixed code is made by adjusting the difference in color and brightness between the first and second code images to a predetermined level and combining these images.Type: ApplicationFiled: August 31, 2012Publication date: May 30, 2013Applicant: Colorzip Media, Inc.Inventors: Cheol Ho Cheong, Tack Don Han, Jong Young Kim, Eui Jae Kim, Seong Hun Jeong, Jae Yun Kim, Han Yeong Choi
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Publication number: 20130136354Abstract: A mixed code, and a method and apparatus for encoding the same are provided. The mixed code includes a first code image region storing a first code image obtained by encoding first information using color, shading, or a combination thereof, and a second code image region storing a second code image obtained by encoding second information using color, shading, or a combination thereof. The first code image and/or the second code image includes the results of encoding interpretation information, construction information, error control information, and code direction information. The mixed code is made by adjusting the difference in color and brightness between the first and second code images to a predetermined level and combining these images.Type: ApplicationFiled: August 30, 2012Publication date: May 30, 2013Applicant: Colorzip Media, Inc.Inventors: Cheol Ho Cheong, Tack Don Han, Jong Young Kim, Eui Jae Kim, Seong Hun Jeong, Jae Yun Kim
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Patent number: 8379050Abstract: A rendering method, medium and apparatus for sequentially performing one or more third raster operations to test whether a fragment can be displayed as a pixel after sequentially performing one or more second raster operations to test whether the fragment can be displayed as the pixel, so as to provide efficient power consumption and rapid completion of rendering.Type: GrantFiled: August 15, 2007Date of Patent: February 19, 2013Assignees: Samsung Electronics Co., Ltd., Yonsei University Industry FoundationInventors: Seok-yoon Jung, Sang-duk Kim, Il-san Kim, Jae-ho Nah, Woo-chan Park, Tack-don Han
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Publication number: 20120081368Abstract: An image rendering apparatus may include a buffer memory unit and a processor. The buffer memory unit may store input ray data for image rendering according to a ray tracing scheme while shape data corresponding to the input ray data is being fetched from a cache. The processor may output the received shape data together with the input ray data to an operation apparatus.Type: ApplicationFiled: June 7, 2011Publication date: April 5, 2012Applicants: Samsung Electronics Co., Ltd.Inventors: Chan Min Park, Jae Ho Nah, Tack Don Han, Jeong Soo Park
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Publication number: 20120075287Abstract: Provided is an image processing apparatus. The image processing apparatus may perform an intersection test for rendering of a ray tracing scheme. The image processing apparatus may include a first calculator and a second calculator. The first calculator may perform a ray-plane test to determine whether a ray intersects a plane including a primitive and a barycentric test to determine whether the ray intersects the primitive. The second calculator may calculate a hit point based on the ray which intersects the primitive.Type: ApplicationFiled: June 6, 2011Publication date: March 29, 2012Applicants: INDUSTRY-ACADEMIC COOPERATION FOUNDATION, YONSEI UNIVERSITY, SAMSUNG ELECTRONICS CO., LTD.Inventors: Chan Min Park, Tack Don Han, Jeong Soo Park, Jae Ho Nah, Yun Hye Jung
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Publication number: 20120050289Abstract: An image processing apparatus is provided. A splitting unit of the image processing apparatus may split a first space within an input three-dimensional (3D) model into a plurality of subspaces in order to generate an acceleration structure of the input 3D model. A decision unit of the image processing apparatus may set a subspace determined as having a relatively high probability of including a ray progress path among the plurality of subspaces, as a child node having a relatively high traversal priority in the acceleration structure among a plurality of child nodes.Type: ApplicationFiled: June 22, 2011Publication date: March 1, 2012Applicants: INDUSTRY-ACADEMIC COOPERATION FOUNDATION, YONSEI UNIVERSTIY, SAMSUNG ELECTRONICS CO., LTD.Inventors: Chan Min Park, Tack Don Han, Jin Woo Kim, Jeong Soo Park, Jae Ho Nah
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Patent number: 7978911Abstract: Provided is a method of classifying colors of a color based image code. The colors of each cell forming the color based image code are classified by sampling a predetermined number of pixels from each cell and then applying a max channel based clustering method, a white balance based color clustering method, a single-linkage algorithm based color classification method, a K-means algorithm based color classification method, or the like. Accordingly, the colors of an image code can be accurately recognized despite of a color distortion due to characteristics of a camera, a printing medium, etc.Type: GrantFiled: June 18, 2007Date of Patent: July 12, 2011Assignees: Colorzip Media, Inc., Colorzip Technology Co., Ltd.Inventors: Cheol Ho Cheong, Tack Don Han, Sang Yong Lee
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Patent number: 7886097Abstract: A bus arbitration system, medium, and method. The bus arbitration system can arbitrate access to a bus for a plurality of masters, requesting the use of a bus to which at least one slave is connected, and may include a bus use granting unit that outputs a plurality of bus grant signals for granting the use of the bus to the plurality of masters that request the use of the bus at the same time, a simultaneous processing available signal selecting unit that selects a predetermined number of operation instruction signals having a predetermined similarity, from among a plurality of operation instruction signals that are input from the masters, in response to the bus grant signals, and an operation instructing unit that simultaneously transmits the selected operation instruction signals to the slave through the bus.Type: GrantFiled: June 22, 2007Date of Patent: February 8, 2011Assignee: Samsung Electronics Co., Ltd.Inventors: Seok-yoon Jung, Il-san Kim, Jin-hong Park, Tack-don Han
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Patent number: 7800608Abstract: A method, medium, and system of rendering image data, including receiving three-dimensional space data for each pixel forming the image data, the three-dimensional space data including depth and color information values for each pixel, determining an order of rendering for a plurality of surfaces forming the image data in an order of the distance between a rendering viewpoint and the surface forming the image data, generating splat depth information values for each splat included in the surface forming the image data, according to the rendering order, and determining whether the splat included in the surface forming the image data is required to be blended and accordingly selectively performing a blending on the splat.Type: GrantFiled: November 8, 2006Date of Patent: September 21, 2010Assignees: Samsung Electronics Co., Ltd., Industry-Academic Cooperation Foundation, Yonsei UniversityInventors: Keun Ho Kim, Gyeong Ja Jang, Shin Jun Lee, Seok Yoon Jung, Mo Young Suh, Woo Nam Chung, Tack Don Han
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Patent number: 7792371Abstract: A method and device for generating and decoding an image code without a direction finder pattern are provided. In the method of generating an image code, a two-dimensional image is generated by encoding the configured basic information and the error correction information, and disposing the encoded basic and error correction information in predetermined regions, respectively. It is determined whether the two-dimensional image can be decoded for directions which are different from a basic direction of the two-dimensional image, respectively, and the two-dimensional image is output as a physical or electronic image code when a result from decoding for the directions which are different from the basic direction of the two-dimensional image is the same as a decoding result for the basic direction, or when decoding cannot be performed for a direction which is different from the basic direction.Type: GrantFiled: November 2, 2006Date of Patent: September 7, 2010Assignees: Colorzip Media, Inc., Colorzip Technology Co., Ltd.Inventors: Jae Won Ahn, Cheol Ho Cheong, Tack Don Han, Sang Yong Lee
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Patent number: RE44139Abstract: Provided are a method and apparatus for decoding a mixed code that is a combination of first and second code images. In the method, a mixed code image is obtained by receiving the original image having the mixed code image and removing noise from the original image. Next, the colors, shades, and brightnesses of pixels of the mixed code image are categorized into groups based on a predetermined threshold, the mixed code image is divided into first and second code images, and first and second information are extracted by decoding the first and second code images, respectively. The first and second code images can be effectively decoded by decoding interpretation information, construction information, error control information, and code direction information stored in the first and/or second code images.Type: GrantFiled: July 6, 2012Date of Patent: April 9, 2013Assignee: Colorzip Media, Inc.Inventors: Cheol Ho Cheong, Tack Don Han, Jong Young Kim, Eui Jae Kim, Seong Hun Jeong, Jae Yun Kim, Han Yeong Choi
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Patent number: RE44982Abstract: A mixed code, and a method and apparatus for encoding the same are provided. The mixed code includes a first code image region storing a first code image obtained by encoding first information using color, shading, or a combination thereof, and a second code image region storing a second code image obtained by encoding second information using color, shading, or a combination thereof. The first code image and/or the second code image includes the results of encoding interpretation information, construction information, error control information, and code direction information. The mixed code is made by adjusting the difference in color and brightness between the first and second code images to a predetermined level and combining these images.Type: GrantFiled: April 19, 2012Date of Patent: July 1, 2014Assignee: Intellectual Discovery Co., Ltd.Inventors: Cheol Ho Cheong, Tack Don Han, Jong Young Kim, Eui Jae Kim, Seong Hun Jeong, Jae Yun Kim, Han Yeong Choi