Patents by Inventor Woong-il Choi

Woong-il Choi 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: 10687768
    Abstract: Disclosed is an X-ray image forming device is disclosed. The device includes an X-ray imaging unit including a rotating member rotatable about a rotating shaft and linearly movable, and an X-ray source and an X-ray sensor disposed at opposite ends of the rotating member to face each other with a region of interest therebetween, a penetration data acquisition unit configured to acquire X-ray penetration data from multiple directions crossing through an image layer in the region of interest by controlling the X-ray imaging unit and an image reconstructor configured to generate projection data in a predetermined angle range at each section of the image layer from the X-ray penetration data, and reconstruct a two-dimensional X-ray panoramic image of the image layer based on the projection data.
    Type: Grant
    Filed: September 18, 2015
    Date of Patent: June 23, 2020
    Assignees: VATECH Co., Ltd., VATECH EWOO Holdings Co., Ltd.
    Inventors: Sung Il Choi, Woong Bae
  • Publication number: 20200177908
    Abstract: A method of decoding a motion vector includes: determining at least one prediction motion vector (PMV) candidate block used to determine a PMV of a current block; determining an availability of a motion vector of the at least one PMV candidate block; when there is a PMV candidate block determined to be unavailable, determining the PMV of the current block by using a default motion vector (MV); and obtaining a motion vector of the current block based on the determined PMV.
    Type: Application
    Filed: March 30, 2018
    Publication date: June 4, 2020
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jin-young LEE, Yin-ji PIAO, Woong-il CHOI
  • Publication number: 20200124766
    Abstract: The present invention relates to an apparatus for calibrating temperature and humidity of a radio-sonde to be adapted to the upper air environment using an upper air simulation chamber including: an isotemperature-isohumidity unit calibrating temperature and humidity measured via the radio-sonde; a sunlight generation unit coupled to the isotemperature-isohumidity unit and generating sunlight to be irradiated to the isotemperature-isohumidity unit; an air supply unit coupled to the isotemperature-isohumidity unit and controlling the pressure and temperature of atmospheric air, allowing supplying air to the isotemperature-isohumidity unit; a sonic nozzle coupled to the isotemperature-isohumidity unit and creating an air flow set at below a set pressure; and a vacuum pump coupled to the isotemperature-isohumidity unit and discharging air which penetrates the isotemperature-isohumidity unit.
    Type: Application
    Filed: March 20, 2019
    Publication date: April 23, 2020
    Applicant: Korea Research Institute of Standards and Science
    Inventors: Yong-Gyoo Kim, In-Seok Yang, Sang-Bong Woo, Byung-Il Choi, Sang-Wook Lee, Woong Kang, Youn-Kyun Oh, Sung-Hun Kim, Seong-Chong Park, Young-Hee Lee
  • Publication number: 20200059677
    Abstract: Provided is a method, performed by a terminal, of providing content includes determining whether at least one content is included in preference content, based on information about the at least one content provided to the terminal and preference information of a user of the terminal about content; content, which is not included in the preference content, is present in the at least one content, transmitting, to a server, a request to change the first content to second content included in the preference content based on previously stored information about the preference content; and outputting the second content received from the server, in response to the request.
    Type: Application
    Filed: February 9, 2018
    Publication date: February 20, 2020
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Pil-kyu PARK, Kwang-pyo CHOI, Woong-il CHOI, Myung-ho KIM, Sung-chan KIM, Jeong-hoon PARK, Hee-chul YANG, Chang-hyun LEE
  • Patent number: 10413262
    Abstract: Disclosed are a mammography system and a mammography imaging method that can prevent a subject from being exposed to radiation more than necessary by setting an optimum imaging condition according to a thickness of a subject's breast, and can obtain a high-quality medical image by setting an optimum FOV and correcting projection data according to the thickness of the breast. The mammography system includes: a mammography imaging device including a detector and an X-ray tube, and obtaining X-ray image data of a subject's breast from multiple angles; a thickness obtaining unit obtaining information on a thickness of the breast; and a rotation angle calculator calculating a rotation angle range of the X-ray tube, based on the information of the thickness of the breast, wherein the mammography imaging device obtains the X-ray image data from multiple angles by performing radiography while rotating the X-ray tube within the rotation angle range.
    Type: Grant
    Filed: August 27, 2015
    Date of Patent: September 17, 2019
    Assignees: Rayence Co., Ltd., VATECH EWOO Holdings Co., Ltd.
    Inventors: Sung Il Choi, Woong Bae, Tae Woo Kim, Keun Yeong Kim
  • Patent number: 10412339
    Abstract: An electronic device is provided. The electronic device includes a camera configured to obtain an image, an input buffer configured to store the image, an encoder implemented with hardware, and configured to encode an image output from the input buffer, at least one memory, and a processor configured to electrically connect with the camera, the input buffer, the encoder, and the at least one memory. The processor is configured to generate an encoding parameter based on a characteristic of the encoder receiving the encoding parameter and to provide the encoding parameter to the encoder.
    Type: Grant
    Filed: August 11, 2016
    Date of Patent: September 10, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jang Hee Ryu, Jung Won Lee, Bong Soo Jung, Woong Il Choi, Kwang Pyo Choi
  • Patent number: 10373350
    Abstract: Disclosed is an apparatus for computed tomography (CT) image data reconstruction based on motion compensation. The apparatus for computed tomography (CT) data reconstruction based on motion compensation, the apparatus including a storage configured to store projection radiographs and an image processor configured to obtain pairs of opposite projection radiographs from the projection radiographs, and compensate a movement of a radiography subject based on a correlation between the projection radiographs of each pair of opposite projection radiographs.
    Type: Grant
    Filed: July 20, 2017
    Date of Patent: August 6, 2019
    Assignees: VATECH Co., Ltd., VATECH EWOO Holdings Co., Ltd., Korea Advanced Institute of Science and Technology
    Inventors: Jong chul Ye, Ja wook Gu, Tae Woo Kim, Sung Il Choi, Woong Bae
  • Publication number: 20190216410
    Abstract: The present invention relates to an X-ray image processing device and an X-ray image processing method using a small X-ray detector, in which the device includes a controller configured to control an X-ray source and an X-ray detector to obtain m (m is an integer of 2 or more) number of consecutive divided projection images at each of preset n (n is an integer of 1 or more) number of imaging angles while rotating around a rotary axis and facing each other, a projection image synthesizing unit configured to generate a synthetic projection image by synthesizing the m number of divided projection images obtained in correspondence to each imaging angle, and an image reconstructor configured to generate a reconstructed image by reconstructing the synthetic projection image.
    Type: Application
    Filed: March 27, 2017
    Publication date: July 18, 2019
    Applicants: VATECH Co., Ltd., VATECH EWOO Holdings Co. Ltd.
    Inventors: Woong BAE, Sang Og NA, Sung Il CHOI
  • Patent number: 10158890
    Abstract: Entropy encoding and entropy decoding of image data are respectively performed whereby context modeling is performed on a context unit of blocks of the image data based on a context model of a previously encoded or decoded block.
    Type: Grant
    Filed: June 16, 2017
    Date of Patent: December 18, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Woong-Il Choi, Woo-jin Han, Tammy Lee, Sun-il Lee
  • Publication number: 20180301937
    Abstract: A wireless power transmitting device according to an embodiment may include a power transmission circuit and a processor. The processor may be configured to control the power transmission circuit to wirelessly transmit power to a first area around the wireless power transmitting device, perform a predetermined first operation when an obstacle is detected in a second area around the first area, and perform a predetermined second operation when it is detected that the obstacle has entered the first area.
    Type: Application
    Filed: April 11, 2018
    Publication date: October 18, 2018
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jae-Seok PARK, Young-Ho RYU, Chang-Hyun KIM, Myung-Ho KIM, Woong-Il CHOI
  • Patent number: 10078793
    Abstract: A method and device for displaying an image are provided. The method includes acquiring block importance values of a plurality of blocks corresponding to an image, determining a reference region including at least one block among the plurality of blocks based on the acquired block importance values and a predetermined reference, determining a main region that includes the reference region and has a predetermined shape and a predetermined size, based on the block importance values, and displaying a portion of the image corresponding to the main region.
    Type: Grant
    Filed: May 27, 2016
    Date of Patent: September 18, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Dae-hee Kim, Woong-il Choi
  • Patent number: 10034000
    Abstract: A method, medium, and system encoding and/or decoding a moving picture. The moving picture encoding method may include selecting a prediction mode that is optimal for the macro blocks, which correspond to each other, of the color components of a current image based on the characteristics of a predetermined image, generating a predicted image for the current image according to the selected prediction mode, and encoding a moving picture using the predicted image. An optimal prediction mode can be adaptively applied to the macro blocks, which correspond to each other, of the color components, thereby increasing the moving picture's encoding and decoding efficiencies.
    Type: Grant
    Filed: March 13, 2007
    Date of Patent: July 24, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Woo-shik Kim, Hyun-mun Kim, Dae-sung Cho, Dmitri Birinov, Dae-hee Kim, Woong-il Choi
  • Patent number: 10027991
    Abstract: Entropy encoding and entropy decoding of image data are respectively performed whereby context modeling is performed on a context unit of blocks of the image data based on a context model of a previously encoded or decoded block.
    Type: Grant
    Filed: June 16, 2017
    Date of Patent: July 17, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Woong-Il Choi, Woo-jin Han, Tammy Lee, Sun-il Lee
  • Publication number: 20180063526
    Abstract: An image encoding method includes: obtaining imaging information determined during a process of capturing an image; generating metadata for determining a compression strength of the image based on the imaging information; determining the compression strength of the image based on the metadata; and encoding the image based on the determined compression strength.
    Type: Application
    Filed: September 8, 2015
    Publication date: March 1, 2018
    Inventors: Woong-il CHOI, Jang-hee RYU, Bong-soo JUNG, Kwang-pyo CHOI, Jung-won LEE
  • Publication number: 20180014022
    Abstract: An encoding apparatus for encoding an image includes: a communicator configured to receive, from a device, device information related to the device; and a processor configured to encode the image by using image information of the image and the device information, wherein the processor is further configured to process the image according to at least one of the device information and the image information, determine a non-encoding region, a block-based encoding region, and a pixel-based encoding region of the image according to at least one of the device information and the image information, performs block-based encoding on the block-based encoding region by using a quantization parameter determined according to at least one of the device information and the image information, perform pixel-based encoding on the pixel-based encoding region, generates an encoded image by entropy encoding a symbol determined by the block-based encoding or the pixel-based encoding, and generate a bitstream comprising the encoded
    Type: Application
    Filed: December 30, 2014
    Publication date: January 11, 2018
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Dae-sung CHO, Chan-yul KIM, Jeong-hoon PARK, Pil-kyu PARK, Kwang-pyo CHOI, Dai-woong CHOI, Woong-il CHOI
  • Patent number: 9866875
    Abstract: Entropy encoding and entropy decoding of image data are respectively performed whereby context modeling is performed on a context unit of blocks of the image data based on a context model of a previously encoded or decoded block.
    Type: Grant
    Filed: February 9, 2017
    Date of Patent: January 9, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Woong-Il Choi, Woo-jin Han, Tammy Lee, Sun-il Lee
  • Publication number: 20170332077
    Abstract: Provided is a method of determining whether an image is to be re-encoded, the method including obtaining a first quantization matrix from an image file including the image, the image being encoded by quantization based on the first quantization matrix including a plurality of first quantization parameters; obtaining a second quantization matrix from a re-encoding device, the second quantization matrix including a plurality of second quantization parameters and having the same size as the first quantization matrix; determining a comparison coefficient based on elements greater than ‘0’ among elements of a comparison matrix obtained by subtracting the first quantization matrix from the second quantization matrix; and determining that the image is to be decoded by inverse quantization based on the first quantization matrix and the decoded image is to be re-encoded by quantization based on the second quantization matrix, when the comparison coefficient is greater than a first threshold value.
    Type: Application
    Filed: May 21, 2015
    Publication date: November 16, 2017
    Inventors: Dai-woong CHOI, Woong-il CHOI, Dong-woo KIM, A-rang LEE, Jong-seok LEE
  • Publication number: 20170318291
    Abstract: Provided is a re-encoding method including obtaining a first quantization table from a bitstream including an image encoded using the first quantization table; obtaining a second quantization table based on a pattern representing a size distribution of values of elements of the first quantization table, the second quantization table including elements respectively corresponding to the elements of the first quantization table; and re-encoding a reconstructed image by using the second quantization table, the reconstructed image being obtained by decoding the encoded image by using the first quantization table.
    Type: Application
    Filed: December 29, 2014
    Publication date: November 2, 2017
    Inventors: Dai-woong CHOI, Woong-il CHOI, Dae-sung CHO
  • Patent number: 9807062
    Abstract: A method and apparatus for enabling a cloud server to provide screen information data indicating a screen to be displayed on a client device are provided. The method of enabling a cloud server to provide screen information data relating to a screen to be displayed on a client device includes: generating the screen information data; determining whether or not to protect the generated screen information data based on characteristics of an object configuring the screen; encrypting the provided screen information data based on the determining; and transmitting the encrypted the screen information data to the client device.
    Type: Grant
    Filed: September 26, 2013
    Date of Patent: October 31, 2017
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sung-bum Park, Yong-je Kim, Myung-jin Eom, Dae-Sung Cho, Woong-il Choi
  • Publication number: 20170295381
    Abstract: Entropy encoding and entropy decoding of image data are respectively performed whereby context modeling is performed on a context unit of blocks of the image data based on a context model of a previously encoded or decoded block.
    Type: Application
    Filed: June 16, 2017
    Publication date: October 12, 2017
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Woong-Il CHOI, Woo-jin HAN, Tammy LEE, Sun-il LEE