Patents by Inventor Hwa-Hyun Cho

Hwa-Hyun 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).

  • Patent number: 11043185
    Abstract: An electronic device includes a display driver integrated (DDI) circuit configured to output reference pixel values to be used to obtain target pixel values of a first line, and to output image pixel values associated with a target image; and a panel circuit configured to include the first line that includes pixels configured to display a reference image having the target pixel values, based on the reference pixel values, and a second line that includes pixels configured to display an image corresponding to the target image, based on the image pixel values. The DDI circuit may be further configured to compensate for the image pixel values based on differences between the image pixel values and the reference pixel values.
    Type: Grant
    Filed: April 20, 2020
    Date of Patent: June 22, 2021
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Yoonho Ko, Jiheon Ok, Taekon Yu, Hwa Hyun Cho
  • Publication number: 20210043158
    Abstract: An electronic device includes a display driver integrated (DDI) circuit configured to output reference pixel values to be used to obtain target pixel values of a first line, and to output image pixel values associated with a target image; and a panel circuit configured to include the first line that includes pixels configured to display a reference image having the target pixel values, based on the reference pixel values, and a second line that includes pixels configured to display an image corresponding to the target image, based on the image pixel values. The DDI circuit may be further configured to compensate for the image pixel values based on differences between the image pixel values and the reference pixel values.
    Type: Application
    Filed: April 20, 2020
    Publication date: February 11, 2021
    Inventors: Yoonho KO, Jiheon OK, Taekon YU, Hwa Hyun CHO
  • Patent number: 10768760
    Abstract: A touch controller includes a touch data generator that is connected to a plurality of sensing lines, the touch data generator sensing a change in capacitance of a sensing unit connected to each of the sensing lines and generating touch data by processing the sensing signal corresponding to the result of sensing; and a signal processor that controls a timing of generating the touch data by receiving at least one piece of timing information for driving a display panel from a timing controller, and then providing either the timing information or a signal generated from the timing information as a control signal to the touch data generator.
    Type: Grant
    Filed: February 20, 2019
    Date of Patent: September 8, 2020
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hyoung-rae Kim, Yoon-kyung Choi, Hwa-hyun Cho, Sang-woo Kim, Hae-yong Ahn, Hyung-dal Kwon, Jong-kang Park, San-ho Byun, Jae-suk Yu
  • Patent number: 10649591
    Abstract: A touch controller includes a touch data generator that is connected to a plurality of sensing lines, the touch data generator sensing a change in capacitance of a sensing unit connected to each of the sensing lines and generating touch data by processing the sensing signal corresponding to the result of sensing; and a signal processor that controls a timing of generating the touch data by receiving at least one piece of timing information for driving a display panel from a timing controller, and then providing either the timing information or a signal generated from the timing information as a control signal to the touch data generator.
    Type: Grant
    Filed: September 15, 2017
    Date of Patent: May 12, 2020
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hyoung-rae Kim, Yoon-kyung Choi, Hwa-hyun Cho, Sang-woo Kim, Hae-yong Ahn, Hyung-dal Kwon, Jong-kang Park, San-ho Byun, Jae-suk Yu
  • Patent number: 10580118
    Abstract: A display driver includes an interface circuit configured to receive an input image of a virtual reality (VR) experience from at least one of an application processor (AP) and a graphics processing unit (GPU); a coordinate correction circuit configured to generate corrected coordinates by adjusting input coordinates of pixels included in the input image; and an image generation circuit configured to generate an output image by distorting the input image using the corrected coordinates.
    Type: Grant
    Filed: May 2, 2018
    Date of Patent: March 3, 2020
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Hwa Hyun Cho, Yoon Ho Ko, Tae Kon Yu, Jae Youl Lee
  • Patent number: 10398976
    Abstract: A display controller includes a frame rate converter creating a second reference image having a second frame rate higher than a first frame rate of a first reference image, based on the first reference image, a buffer storing the second reference image, and an image processor creating an output image by selecting at least a portion of the second reference image.
    Type: Grant
    Filed: December 28, 2016
    Date of Patent: September 3, 2019
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Kyu Tae Lim, Chi Ho Cha, Hwa Hyun Cho, Yoon Ho Ko
  • Publication number: 20190179456
    Abstract: A touch controller includes a touch data generator that is connected to a plurality of sensing lines, the touch data generator sensing a change in capacitance of a sensing unit connected to each of the sensing lines and generating touch data by processing the sensing signal corresponding to the result of sensing; and a signal processor that controls a timing of generating the touch data by receiving at least one piece of timing information for driving a display panel from a timing controller, and then providing either the timing information or a signal generated from the timing information as a control signal to the touch data generator.
    Type: Application
    Filed: February 20, 2019
    Publication date: June 13, 2019
    Inventors: Hyoung-rae Kim, Yoon-kyung Choi, Hwa-hyun Cho, Sang-woo Kim, Hae-yong Ahn, Hyung-dal Kwon, Jong-kang Park, San-ho Byun, Jae-suk Yu
  • Publication number: 20190156466
    Abstract: A display driver includes an interface circuit configured to receive an input image of a virtual reality (VR) experience from at least one of an application processor (AP) and a graphics processing unit (GPU); a coordinate correction circuit configured to generate corrected coordinates by adjusting input coordinates of pixels included in the input image; and an image generation circuit configured to generate an output image by distorting the input image using the corrected coordinates.
    Type: Application
    Filed: May 2, 2018
    Publication date: May 23, 2019
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Hwa Hyun Cho, Yoon Ho Ko, Tae Kon Yu, Jae Youl Lee
  • Patent number: 10254903
    Abstract: A touch controller includes a touch data generator that is connected to a plurality of sensing lines, the touch data generator sensing a change in capacitance of a sensing unit connected to each of the sensing lines and generating touch data by processing the sensing signal corresponding to the result of sensing; and a signal processor that controls a timing of generating the touch data by receiving at least one piece of timing information for driving a display panel from a timing controller, and then providing either the timing information or a signal generated from the timing information as a control signal to the touch data generator.
    Type: Grant
    Filed: April 12, 2016
    Date of Patent: April 9, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hyoung-Rae Kim, Yoon-Kyung Choi, Hwa-Hyun Cho, Sang-Woo Kim, Hae-Yong Ahn, Hyung-Dal Kwon, Jong-Kang Park, San-Ho Byun, Jae-suk Yu
  • Patent number: 10042482
    Abstract: A touch controller includes a touch data generator that is connected to a plurality of sensing lines, the touch data generator sensing a change in capacitance of a sensing unit connected to each of the sensing lines and generating touch data by processing the sensing signal corresponding to the result of sensing; and a signal processor that controls a timing of generating the touch data by receiving at least one piece of timing information for driving a display panel from a timing controller, and then providing either the timing information or a signal generated from the timing information as a control signal to the touch data generator.
    Type: Grant
    Filed: May 22, 2012
    Date of Patent: August 7, 2018
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hyoung-rae Kim, Yoon-kyung Choi, Hwa-hyun Cho, Sang-woo Kim, Hae-yong Ahn, Hyung-dal Kwon, Jong-kang Park, San-ho Byun, Jae-suk Yu
  • Publication number: 20180004326
    Abstract: A touch controller includes a touch data generator that is connected to a plurality of sensing lines, the touch data generator sensing a change in capacitance of a sensing unit connected to each of the sensing lines and generating touch data by processing the sensing signal corresponding to the result of sensing; and a signal processor that controls a timing of generating the touch data by receiving at least one piece of timing information for driving a display panel from a timing controller, and then providing either the timing information or a signal generated from the timing information as a control signal to the touch data generator.
    Type: Application
    Filed: September 15, 2017
    Publication date: January 4, 2018
    Inventors: Hyoung-rae Kim, Yoon-kyung Choi, Hwa-hyun Cho, Sang-woo Kim, Hae-yong Ahn, Hyung-dal Kwon, Jong-kang Park, San-ho Byun, Jae-suk Yu
  • Publication number: 20170340969
    Abstract: A display controller includes a frame rate converter creating a second reference image having a second frame rate higher than a first frame rate of a first reference image, based on the first reference image, a buffer storing the second reference image, and an image processor creating an output image a user by selecting at least a portion of the second reference image.
    Type: Application
    Filed: December 28, 2016
    Publication date: November 30, 2017
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Kyu Tae LIM, Chi Ho CHA, Hwa Hyun CHO, Yoon Ho KO
  • Publication number: 20170293395
    Abstract: A touch controller includes a touch data generator that is connected to a plurality of sensing lines, the touch data generator sensing a change in capacitance of a sensing unit connected to each of the sensing lines and generating touch data by processing the sensing signal corresponding to the result of sensing; and a signal processor that controls a timing of generating the touch data by receiving at least one piece of timing information for driving a display panel from a timing controller, and then providing either the timing information or a signal generated from the timing information as a control signal to the touch data generator.
    Type: Application
    Filed: April 12, 2016
    Publication date: October 12, 2017
    Inventors: HYOUNG-RAE KIM, YOON-KYUNG CHOI, HWA-HYUN CHO, SANG-WOO KIM, HAE-YONG AHN, HYUNG-DAL KWON, JONG-KANG PARK, SAN-HO BYUN, Jae-suk YU
  • Patent number: 9754343
    Abstract: Image processing apparatus, an image processing system, and an image processing method. The image processing apparatus includes: an input image processing unit for outputting global information of sample data obtained by sampling first image data and dividing and outputting the first image data into an N (where N is a positive integer equal to or greater than 2) number of split image data; and a frame rate conversion unit including an N number of frame rate converters, wherein each of the N number of frame rate converters converts a frame rate of corresponding split image data among the N number of split image data synchronized with the global information and outputs the frame rate converted split image data as split display data, wherein the split display data is to be displayed on one of an N number of display regions.
    Type: Grant
    Filed: June 17, 2014
    Date of Patent: September 5, 2017
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Yoon-ho Ko, Hwa-hyun Cho, Jong-seon Kim, Seung-joon Lee
  • Publication number: 20160224163
    Abstract: A touch controller includes a touch data generator that is connected to a plurality of sensing lines, the touch data generator sensing a change in capacitance of a sensing unit connected to each of the sensing lines and generating touch data by processing the sensing signal corresponding to the result of sensing; and a signal processor that controls a timing of generating the touch data by receiving at least one piece of timing information for driving a display panel from a timing controller, and then providing either the timing information or a signal generated from the timing information as a control signal to the touch data generator.
    Type: Application
    Filed: April 12, 2016
    Publication date: August 4, 2016
    Inventors: HYOUNG-RAE KIM, YOON-KYUNG CHOI, HWA-HYUN CHO, SANG-WOO KIM, HAE-YONG AHN, HYUNG-DAL KWON, JONG-KANG PARK, SAN-HO BYUN, JAE-SUK YU
  • Publication number: 20160224188
    Abstract: A touch controller includes a touch data generator that is connected to a plurality of sensing lines, the touch data generator sensing a change in capacitance of a sensing unit connected to each of the sensing lines and generating touch data by processing the sensing signal corresponding to the result of sensing; and a signal processor that controls a timing of generating the touch data by receiving at least one piece of timing information for driving a display panel from a timing controller, and then providing either the timing information or a signal generated from the timing information as a control signal to the touch data generator.
    Type: Application
    Filed: April 12, 2016
    Publication date: August 4, 2016
    Inventors: HYOUNG-RAE KIM, YOON-KYUNG CHOI, HWA-HYUN CHO, SANG-WOO KIM, HAE-YONG AHN, HYUNG-DAL KWON, JONG-KANG PARK, SAN-HO BYUN, Jae-suk YU
  • Patent number: 9071838
    Abstract: Disclosed is a display driving device, a display device including the same, and an image data compression and decompression method. The display driving device comprises an encoder that compresses PenTileĀ® matrix encoded input image data using a binary encoding scheme and a DPCM encoding scheme, calculates errors produced by each encoding scheme, and selects an encoding scheme mode and its compressed data according to the calculated errors. A decoder decompresses the compressed data according to a decoding scheme corresponding to the selected encoding scheme mode. And a source driver drives source lines connected with a display panel based on decompressed data.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: June 30, 2015
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Hwa Hyun Cho, Sang-Woo Kim, Yong-Yeob Choi, YoonKyung Choi, Jaesuk Yu
  • Publication number: 20150016748
    Abstract: Image processing apparatus, an image processing system, and an image processing method. The image processing apparatus includes: an input image processing unit for outputting global information of sample data obtained by sampling first image data and dividing and outputting the first image data into an N (where N is a positive integer equal to or greater than 2) number of split image data; and a frame rate conversion unit including an N number of frame rate converters, wherein each of the N number of frame rate converters converts a frame rate of corresponding split image data among the N number of split image data synchronized with the global information and outputs the frame rate converted split image data as split display data, wherein the split display data is to be displayed on one of an N number of display regions.
    Type: Application
    Filed: June 17, 2014
    Publication date: January 15, 2015
    Inventors: Yoon-ho KO, Hwa-hyun CHO, Jong-seon KIM, Seung-joon LEE
  • Patent number: 8791953
    Abstract: A method of adjusting value includes calculating a value of saturation from an input image signal, and adjusting a value of value of the input image signal according to a calculated saturation value. In the method, the value of value of the input image signal is adjusted by using a value adjustment algorithm for determining a value adjustment rate that decreases the value according to the saturation value.
    Type: Grant
    Filed: May 24, 2011
    Date of Patent: July 29, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hyung-dal Kwon, Dong-yul Lee, See-wook Park, Yoon-kyung Choi, Hwa-hyun Cho
  • Patent number: 8605790
    Abstract: Provided are frame interpolation apparatus and methods in which motion estimation is performed by separation into a static object and a moving object. The frame interpolation apparatus interpolates multiple frames including an nth frame and an (n?1)th frame located adjacent the nth frame in order to generate an interpolation frame. Some embodiments of the apparatus include a static object separation unit, a motion vector (MV) estimation unit, and an interpolation frame generation unit. The static object separation unit may compare a macroblock (MB) of the nth frame with an MB of the (n?1)th frame, which may correspond to the MB of the nth frame, in order to separate each MB of the nth frame into a static object and a moving object. The MV estimation unit may search in the (n?1)th frame for an MB that matches with each of MBs of the nth frame, which may be determined to be the moving object, to estimate an MV.
    Type: Grant
    Filed: January 28, 2008
    Date of Patent: December 10, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hwa-hyun Cho, Jong-seon Kim