Patents by Inventor Su-Ram CHA
Su-Ram CHA 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: 20240089595Abstract: Disclosed is an image sensor including a pixel array having a pixel pattern in which first to fourth 2×2 pixel groups are arranged in a clockwise direction, one infrared pixel is arranged in each of two 2×2 pixel groups that are not adjacent to each other, the same green pixels are arranged in a first diagonal direction, and red pixels and blue pixels are arranged in half in a second diagonal direction crossing the first diagonal direction, in a 4×4 unit pixel group.Type: ApplicationFiled: March 27, 2023Publication date: March 14, 2024Applicant: SK hynix Inc.Inventor: Su Ram CHA
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Publication number: 20240020793Abstract: Provided herein may be an image processing device and an image processing method. The image processing device may include a motion manager configured to generate movement information of an image sensor based on pixel values of a first frame image received from the image sensor, pixel values of a second frame image received from the image sensor prior to the first frame image, and velocity information of an inertia sensor configured to sense a velocity of the image sensor, a similarity map generator configured to generate a similarity map indicating a weight of a noise removal filter based on the pixel values of the first frame image, and a noise remover configured to remove temporal and spatial noise based on pixel values of the first frame image to which the noise removal filter is applied based on the similarity map and pixel values of the second frame image.Type: ApplicationFiled: November 29, 2022Publication date: January 18, 2024Inventor: Su Ram CHA
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Publication number: 20240014232Abstract: An image sensing device includes a pixel array including a plurality of unit pixel blocks arranged in a matrix form. Each of the unit pixel blocks includes a plurality of imaging pixel groups and a cross-talk sensing pixel group. The cross-talk sensing pixel group includes a first green sensing pixel including a first green color filter and a first yellow color filter; a red sensing pixel including a second yellow color filter and a red color filter; a blue sensing pixel including a blue color filter and a first cyan color filter; and a second green sensing pixel including a second cyan color filter and a second green color filter.Type: ApplicationFiled: November 3, 2022Publication date: January 11, 2024Inventor: Su Ram CHA
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Publication number: 20230412933Abstract: Disclosed is an image sensor including a pixel array, wherein the pixel array includes a first sub-pixel array including pixels disposed in a first diagonal direction and each having a green filter, and pixels disposed in a second diagonal direction and each having a yellow filter; a second sub-pixel array including pixels disposed in the first diagonal direction and each having the green filter, and pixels disposed in the second diagonal direction and each having the yellow filter; a third sub-pixel array including pixels disposed in the second diagonal direction and each having a red filter, and pixels disposed in the first diagonal direction and each having a magenta filter; and a fourth sub-pixel array including pixels disposed in the second diagonal direction and each having a blue filter, and pixels disposed in the first diagonal direction and each having a cyan filter.Type: ApplicationFiled: December 20, 2022Publication date: December 21, 2023Inventor: Su Ram CHA
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Patent number: 11825217Abstract: Disclosed is an image sensing device including a pixel array, wherein the pixel array includes a first sub-pixel array including pixels each having a green filter and disposed in a first diagonal direction, and pixels each having a white filter and disposed in a second diagonal direction, a second sub-pixel array including pixels each having the green filter and disposed in the first diagonal direction, and pixels each having the white filter and disposed in the second diagonal direction, a third sub-pixel array including pixels each having a red filter and disposed in the second diagonal direction, and pixels each having the white filter and disposed in the first diagonal direction, and a fourth sub-pixel array including pixels each having a blue filter and disposed in the second diagonal direction, and pixels each having the white filter and disposed in the first diagonal direction.Type: GrantFiled: March 29, 2022Date of Patent: November 21, 2023Assignee: SK hynix Inc.Inventors: Su Ram Cha, Jong Heon Kim, Woo Young Choi
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Publication number: 20230300484Abstract: Disclosed is an image sensing system including a first sub-pixel array having an arrangement of K×K pixels, where “K” is a natural number greater than 4, wherein the first sub-pixel array includes: first pixels disposed in a first diagonal direction and each having a green filter; second pixels disposed in a second diagonal direction that intersects the first diagonal direction and each having a red filter, and third pixels disposed in the second diagonal direction and each having a blue filter; and fourth pixels each having a white filter and disposed at the other positions except for arrangement positions of the first to third pixels disposed in the first and second diagonal directions, and fifth pixels suitable for measuring depth information, and the fourth pixels and the fifth pixels are disposed in a first pattern.Type: ApplicationFiled: October 26, 2022Publication date: September 21, 2023Inventors: Su Ram CHA, Ji Hee HAN
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Patent number: 11750783Abstract: A demosaic operation circuit includes a white pixel value estimation circuit suitable for acquiring an RGB channel average value and a directional gradient value of a white pixel for each direction using source pixel data provided from a pixel array, and estimating a white pixel value based on the RGB channel average value and the directional gradient value of the white pixel; a fine adjustment circuit suitable for finely adjusting an estimated white pixel value by removing noise through a different filter based on weight values which are differently allocated according to a gradient of a center pixel and a neighboring white pixel; a chroma estimation circuit suitable for estimating a chroma by calculating a chroma array based on the source pixel data and an adjusted white pixel value; and a color correction circuit suitable for correcting a color based on a finely adjusted white pixel value and the chroma.Type: GrantFiled: January 13, 2021Date of Patent: September 5, 2023Assignee: SK hynix Inc.Inventor: Su Ram Cha
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Publication number: 20230101569Abstract: Disclosed is an image sensing device including a pixel array, wherein the pixel array includes a first sub-pixel array including pixels each having a green filter and disposed in a first diagonal direction, and pixels each having a white filter and disposed in a second diagonal direction, a second sub-pixel array including pixels each having the green filter and disposed in the first diagonal direction, and pixels each having the white filter and disposed in the second diagonal direction, a third sub-pixel array including pixels each having a red filter and disposed in the second diagonal direction, and pixels each having the white filter and disposed in the first diagonal direction, and a fourth sub-pixel array including pixels each having a blue filter and disposed in the second diagonal direction, and pixels each having the white filter and disposed in the first diagonal direction.Type: ApplicationFiled: March 29, 2022Publication date: March 30, 2023Inventors: Su Ram CHA, Jong Heon KIM, Woo Young CHOI
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Patent number: 11528426Abstract: Disclosed are an image sensing device and an operating method thereof, and the image sensing device may include: an image sensor including a plurality of pixels and suitable for generating an image based on incident light; and an image processor suitable for generating a high dynamic range (HDR) image based on the image and two or more pieces of tone mapping information, which are divided according to luminance.Type: GrantFiled: September 18, 2020Date of Patent: December 13, 2022Assignee: SK hynix Inc.Inventors: Su Ram Cha, Seong Hee Park
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Publication number: 20220021857Abstract: A demosaic operation circuit includes a white pixel value estimation circuit suitable for acquiring an RGB channel average value and a directional gradient value of a white pixel for each direction using source pixel data provided from a pixel array, and estimating a white pixel value based on the RGB channel average value and the directional gradient value of the white pixel; a fine adjustment circuit suitable for finely adjusting an estimated white pixel value by removing noise through a different filter based on weight values which are differently allocated according to a gradient of a center pixel and a neighboring white pixel; a chroma estimation circuit suitable for estimating a chroma by calculating a chroma array based on the source pixel data and an adjusted white pixel value; and a color correction circuit suitable for correcting a color based on a finely adjusted white pixel value and the chroma.Type: ApplicationFiled: January 13, 2021Publication date: January 20, 2022Inventor: Su Ram CHA
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Publication number: 20210385395Abstract: A smart binning circuit includes an edge information generator suitable for generating edge information from pixel data outputted from a pixel array; a weight allocator suitable for allocating a weight based on the edge information; a binning component suitable for generating a binning value by performing an edge detection interpolation (EDI) binning on the edge information; a bayer binning component suitable for generating an average value representing pixels that are down-scaled through a 4-sum binning operation; and a combiner suitable for combining the binning value and the average value according to the allocated weight.Type: ApplicationFiled: January 4, 2021Publication date: December 9, 2021Inventors: Su Ram CHA, Dong Ik KIM, Tae Hyun KIM, Seong Hee PARK
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Patent number: 11196946Abstract: A smart binning circuit includes an edge information generator suitable for generating edge information from pixel data outputted from a pixel array; a weight allocator suitable for allocating a weight based on the edge information; a binning component suitable for generating a binning value by performing an edge detection interpolation (EDI) binning on the edge information; a bayer binning component suitable for generating an average value representing pixels that are down-scaled through a 4-sum binning operation; and a combiner suitable for combining the binning value and the average value according to the allocated weight.Type: GrantFiled: January 4, 2021Date of Patent: December 7, 2021Assignee: SK hynix Inc.Inventors: Su Ram Cha, Dong Ik Kim, Tae Hyun Kim, Seong Hee Park
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Publication number: 20210314478Abstract: Disclosed are an image sensing device and an operating method thereof, and the image sensing device may include: an image sensor including a plurality of pixels and suitable for generating an image based on incident light; and an image processor suitable for generating a high dynamic range (HDR) image based on the image and two or more pieces of tone mapping information, which are divided according to luminance.Type: ApplicationFiled: September 18, 2020Publication date: October 7, 2021Inventors: Su Ram CHA, Seong Hee PARK
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Patent number: 10855959Abstract: An image sensing device includes a pixel array of a 4×4 pixel unit including first to fourth sub-pixel arrays of 2×2 pixels. The first and second sub-pixel arrays are arranged in a first diagonal direction, and the third and fourth sub-pixel arrays are arranged in a second diagonal direction intersecting the first diagonal direction. The first and second sub-pixel arrays have a first color pattern, and the third and fourth sub-pixel arrays have second and third color patterns, respectively, and each of the first to third color patterns includes two or more colors.Type: GrantFiled: September 5, 2018Date of Patent: December 1, 2020Assignee: SK hynix Inc.Inventors: Su-Ram Cha, Tae-Hyun Kim, Seong-Hee Park, Chang-Hee Pyeoun
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Publication number: 20190222812Abstract: An image sensing device includes a pixel array of a 4×4 pixel unit including first to fourth sub-pixel arrays of 2×2 pixels. The first and second sub-pixel arrays are arranged in a first diagonal direction, and the third and fourth sub-pixel arrays are arranged in a second diagonal direction intersecting the first diagonal direction. The first and second sub-pixel arrays have a first color pattern, and the third and fourth sub-pixel arrays have second and third color patterns, respectively, and each of the first to third color patterns includes two or more colors.Type: ApplicationFiled: September 5, 2018Publication date: July 18, 2019Inventors: Su-Ram Cha, Tae-Hyun Kim, Seong-Hee Park, Chang-Hee Pyeoun
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Patent number: 9716867Abstract: A color filter array includes a plurality of first pixels transmitting light having visible wavelengths, a plurality of second pixels transmitting light having a first range of wavelengths in the visible spectrum, a plurality of third pixels transmitting light having a second range of wavelengths in the visible spectrum, and a plurality of crosstalk detection pixels each including a first half pixel and a second half pixel, wherein the first half pixel transmits light having first wavelengths in a part of the first range, and wherein the second half pixel partially transmits light having second wavelengths in a part of the second range.Type: GrantFiled: March 18, 2015Date of Patent: July 25, 2017Assignee: SK Hynix Inc.Inventors: Su-Ram Cha, Jong-Suk Lee
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Patent number: 9535197Abstract: A color filter array includes first pixels, second pixels, third pixels, and fourth pixels. The first pixels transmit light with visible and infrared (IR) wavelengths. The second pixels transmit light with the visible wavelengths and surround each of the first pixels. The third pixels transmit light with a first range of wavelengths among the visible wavelengths. The fourth pixels transmit light with a second range of wavelengths among the visible wavelengths.Type: GrantFiled: March 17, 2015Date of Patent: January 3, 2017Assignee: SK Hynix Inc.Inventors: Su-Ram Cha, Jong-Suk Lee
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Publication number: 20160173835Abstract: A color filter array includes a plurality of first pixels transmitting light having visible wavelengths, a plurality of second pixels transmitting light having a first range of wavelengths in the visible spectrum, a plurality of third pixels transmitting light having a second range of wavelengths in the visible spectrum, and a plurality of crosstalk detection pixels each including a first half pixel and a second half pixel, wherein the first half pixel transmits light having first wavelengths in a part of the first range, and wherein the second half pixel partially transmits light having second wavelengths in a part of the second range.Type: ApplicationFiled: March 18, 2015Publication date: June 16, 2016Inventors: Su-Ram CHA, Jong-Suk LEE
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Publication number: 20160154151Abstract: A color filter array includes first pixels, second pixels, third pixels, and fourth pixels. The first pixels transmit light with visible and infrared (IR) wavelengths. The second pixels transmit light with the visible wavelengths and surround each of the first pixels. The third pixels transmit light with a first range of wavelengths among the visible wavelengths. The fourth pixels transmit light with a second range of wavelengths among the visible wavelengths.Type: ApplicationFiled: March 17, 2015Publication date: June 2, 2016Inventors: Su-Ram CHA, Jong-Suk LEE