Patents by Inventor Dae Woong Choi

Dae Woong 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).

  • Publication number: 20240119949
    Abstract: An encoding/decoding apparatus and method for controlling a channel signal is disclosed, wherein the encoding apparatus may include an encoder to encode an object signal, a channel signal, and rendering information for the channel signal, and a bit stream generator to generate, as a bit stream, the encoded object signal, the encoded channel signal, and the encoded rendering information for the channel signal.
    Type: Application
    Filed: November 30, 2023
    Publication date: April 11, 2024
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Jeong Il SEO, Seung Kwon BEACK, Dae Young JANG, Kyeong Ok KANG, Tae Jin PARK, Yong Ju LEE, Keun Woo CHOI, Jin Woong KIM
  • Patent number: 11949881
    Abstract: The present invention discloses an encoding apparatus using a Discrete Cosine Transform (DCT) scanning, which includes a mode selection means for selecting an optimal mode for intra prediction; an intra prediction means for performing intra prediction onto video inputted based on the mode selected in the mode selection means; a DCT and quantization means for performing DCT and quantization onto residual coefficients of a block outputted from the intra prediction means; and an entropy encoding means for performing entropy encoding onto DCT coefficients acquired from the DCT and quantization by using a scanning mode decided based on pixel similarity of the residual coefficients.
    Type: Grant
    Filed: April 1, 2021
    Date of Patent: April 2, 2024
    Assignees: Electronics and Telecommunications Research Institute, Kwangwoon University Research Institute for Industry Cooperation, Industry-Academia Cooperation Group of Sejong University
    Inventors: Se-Yoon Jeong, Hae-Chul Choi, Jeong-Il Seo, Seung-Kwon Beack, In-Seon Jang, Jae-Gon Kim, Kyung-Ae Moon, Dae-Young Jang, Jin-Woo Hong, Jin-Woong Kim, Yung-Lyul Lee, Dong-Gyu Sim, Seoung-Jun Oh, Chang-Beom Ahn, Dae-Yeon Kim, Dong-Kyun Kim
  • Publication number: 20240001408
    Abstract: An apparatus for manufacturing a semiconductor device, including: a wet treatment chamber; a nozzle provided in the wet treatment chamber and configured to spray a treatment material onto a substrate; a supercritical fluid treatment chamber configured to supply a supercritical fluid onto the substrate to treat the substrate; a transfer device comprising an arm configured to transfer the substrate between the wet treatment chamber and the supercritical fluid treatment chamber; and a controller configured to control the wet treatment chamber to spray the treatment material onto the arm
    Type: Application
    Filed: July 3, 2023
    Publication date: January 4, 2024
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Dae-Woong CHOI, Yong Myung JUN, Hyun-Chul KIM, Chang Seok SEO, Chan JEON, Woo Seok CHOE, In Sung HUH
  • Patent number: 9916044
    Abstract: An information processing device is provided. The device comprises a 3D sensor configured to acquire depth information of a user's hand image and depth information of a background image on an object plane; a storage device in which a character input application is stored; a processor configured to execute the character input application; and a display configured to display a virtual keyboard by executing the character input application.
    Type: Grant
    Filed: December 3, 2015
    Date of Patent: March 13, 2018
    Assignee: KOREA UNIVERSITY RESEARCH AND BUSINESS FOUNDATION, SEJONG CAMPUS
    Inventors: Hyeonjoong Cho, Dae-Woong Choi
  • Publication number: 20160085379
    Abstract: An information processing device is provided. The device comprises a 3D sensor configured to acquire depth information of a user's hand image and depth information of a background image on an object plane; a storage device in which a character input application is stored; a processor configured to execute the character input application; and a display configured to display a virtual keyboard by executing the character input application.
    Type: Application
    Filed: December 3, 2015
    Publication date: March 24, 2016
    Applicant: Korea University Research and Business Foundation
    Inventors: Hyeonjoong Cho, Dae-Woong Choi
  • Publication number: 20140004457
    Abstract: A polymerization toner having superior chargeability and storage stability is provided. The polymerization toner includes a binder resin and a colorant, wherein the binder resin has a dielectric constant ranging from 2.8 to 3.7.
    Type: Application
    Filed: December 21, 2011
    Publication date: January 2, 2014
    Applicant: SAMSUNG FINE CHEMICALS CO., LTD.
    Inventors: Jae Bum Park, Young Jae Kwon, Dong Woo Kim, Dae Woong Choi
  • Patent number: 8603717
    Abstract: Provided are a toner and a method of preparing the same. The toner includes a binder resin, a coloring agent, and at least one additive, and a storage modulus curve of the toner with respect to temperature has multiple inflection points. The toner may be used in an electrophotographic image forming apparatus.
    Type: Grant
    Filed: July 22, 2009
    Date of Patent: December 10, 2013
    Assignee: Samsung Fine Chemicals Co., Ltd.
    Inventors: Jae Bum Park, Woo Young Yang, Keon Il Kim, Dae Il Hwang, Il Hyuk Kim, Il Sun Hwang, Jae Kwang Hwang, Dae Woong Choi, Dong Won Kim, Duck Kyun Ahn
  • Publication number: 20130273472
    Abstract: Provided is a method for manufacturing a toner. By using a wax dispersion liquid containing silica, the toner which does not have an unpleasant odor can be achieved without influencing other physical properties of the toner.
    Type: Application
    Filed: December 21, 2011
    Publication date: October 17, 2013
    Applicant: SAMSUNG FINE CHEMICALS CO., LTD.
    Inventors: Jae Bum Park, Young Jae Kwon, Dae Woong Choi, Dong Woo Kim
  • Publication number: 20130273466
    Abstract: Provided is a toner particle having excellent environmental resistance, fluidity, and chargeability for developing an electrostatic image. The toner particle comprises a coupling resin, a release agent, and a coloring agent, and satisfies Formula (1) below: 8.5?SMF?10.5??(1), wherein the surface morphology factor (SMF) of the formula can be represented by following Formula (2): SMF=?log(4/3×?×D3×RD×B×C) [m2/ea]??(2).
    Type: Application
    Filed: December 21, 2011
    Publication date: October 17, 2013
    Applicant: SAMSUNG FINE CHEMICALS CO., LTD.
    Inventors: Dae Woong Choi, Jae Bum Park, Dong Woo Kim, Young Jae Kwon
  • Patent number: 8492060
    Abstract: Provided are a method of forming a toner image and an electrophotographic image forming apparatus including a toner. The method of forming a toner image is performed using a first toner having a yellow color and color coordinate values of a lightness (L) ranging from 91 to 94, a redness (a) ranging from ?11 to ?9, and a yellowness (b) ranging from 77 to 82; a second toner having a magenta color and color coordinate values of a lightness (L) ranging from 56 to 61, a redness (a) ranging from 56 to 61, and a yellowness (b) ranging from ?7 to ?5; and a third toner having a cyan color and color coordinate values of a lightness (L) ranging from 58 to 62, a redness (a) ranging from ?33 to ?30, and a yellowness (b) ranging from ?42 to ?37.
    Type: Grant
    Filed: June 4, 2009
    Date of Patent: July 23, 2013
    Assignee: Samsung Fine Chemicals Co., Ltd.
    Inventors: Dae Woong Choi, Woo Young Yang, Keon Il Kim, Dae Il Hwang, Il Hyuk Kim, Jae Bum Park, Il Sun Hwang, Jae Kwang Hwang, Dong Won Kim, Duck Kyun Ahn
  • Patent number: 8475995
    Abstract: A toner has a core-shell structure including a toner core portion having a resin with an active hydrogenactive hydrogen containing group, a colorant and at least one additive, and a toner shell portion surrounding the toner core portion, wherein the toner shell portion includes a cross-linked resin prepared by reaction of at least a portion of the active hydrogen containing group and the cross-linking agent.
    Type: Grant
    Filed: October 22, 2008
    Date of Patent: July 2, 2013
    Assignee: Samsung Fine Chemicals Co., Ltd.
    Inventors: Dae Il Hwang, Woo Young Yang, Keon Il Kim, Il Hyuk Kim, Jae Bum Park, Il Sun Hwang, Jae Kwang Hwang, Dae Woong Choi, Dong Won Kim, Duck Kyun Ahn
  • Patent number: 8389188
    Abstract: Provided are a toner using a resin having an active hydrogen-containing group, and a method of preparing the toner. The toner using a resin having an active hydrogen-containing group includes a binder resin (A), a cross-linked resin including a THF insoluble content of 99-100 weight %, a colorant, and at least one additive. The cross-linked resin is arranged in the form of a plurality of islands in each particle of the toner.
    Type: Grant
    Filed: October 22, 2008
    Date of Patent: March 5, 2013
    Assignee: Samsung Fine Chemicals Co., Ltd.
    Inventors: Dong Won Kim, Woo Young Yang, Keon Il Kim, Dae Il Hwang, Il Hyuk Kim, Jae Bum Park, Il Sun Hwang, Jae Kwang Hwang, Dae Woong Choi, Duck Kyun Ahn
  • Patent number: 8389196
    Abstract: Provided is a method of preparing a toner, the method including: preparing a solvent emulsion by stirring a medium including a polar medium, an organic solvent, and a surfactant; adding toner components including a resin and a pigment to the solvent emulsion; removing the organic solvent from the solvent emulsion including the toner components; and collecting a toner particle from the solvent emulsion from which the organic solvent is removed.
    Type: Grant
    Filed: September 19, 2008
    Date of Patent: March 5, 2013
    Assignee: Samsung Fine Chemicals Co., Ltd.
    Inventors: Woo Young Yang, Keon Il Kim, Dae Il Hwang, Il Hyuk Kim, Jae Bum Park, Il Sun Hwang, Jae Kwang Hwang, Dae Woong Choi, Dong Won Kim, Duck Kyun Ahn
  • Publication number: 20120301819
    Abstract: Provided is a toner having excellent blocking resistance and flowability. The toner comprises a binder resin, a releasing agent, a colorant and an external additive, wherein the toner particles satisfy expression (1): 2.0?RD/TD?2.5 ??(1), where RD is the real density of the toner particles and TD is the tap density of the toner particles.
    Type: Application
    Filed: February 1, 2011
    Publication date: November 29, 2012
    Applicant: SAMSUNG FINE CHEMICALS CO., LTD.
    Inventors: Dae Woong Choi, Jae Bum Park, Young Jae Kwon
  • Publication number: 20120244467
    Abstract: Toner particles having excellent cleaning properties and glossing properties. The toner particles include a binder resin, a releasing agent, and a colorant, wherein toner particles satisfy the following conditions. 50° C.?T1/2?Tg?100° C.??(1) 50° C.?Tg60° C.
    Type: Application
    Filed: December 16, 2010
    Publication date: September 27, 2012
    Applicant: SAMSUNG FINE CHEMICALS CO., LTD.
    Inventors: Jae Bum Park, Young Jae Kwon, Dae Woong Choi
  • Publication number: 20110159424
    Abstract: Provided are a method of forming a toner image and an electrophotographic image forming apparatus including a toner. The method of forming a toner image is performed using a first toner having a yellow color and color coordinate values of a lightness (L) ranging from 91 to 94, a redness (a) ranging from ?11 to ?9, and a yellowness (b) ranging from 77 to 82; a second toner having a magenta color and color coordinate values of a lightness (L) ranging from 56 to 61, a redness (a) ranging from 56 to 61, and a yellowness (b) ranging from ?7 to ?5; and a third toner having a cyan color and color coordinate values of a lightness (L) ranging from 58 to 62, a redness (a) ranging from ?33 to ?30, and a yellowness (b) ranging from ?42 to ?37.
    Type: Application
    Filed: June 4, 2009
    Publication date: June 30, 2011
    Applicant: SAMSUNG FINE CHEMICALS CO., LTD
    Inventors: Dae Woong Choi, Woo Young Yang, Keon Il Kim, Dae Il Hwang, Il Hyuk Kim, Jae Bum Park, Il Sun Hwang, Jae Kwang Hwang, Dong Won Kim, Duck Kyun Ahn
  • Publication number: 20110116841
    Abstract: Provided are a toner and a method of preparing the same. The toner includes a binder resin, a coloring agent, and at least one additive, and a storage modulus curve of the toner with respect to temperature has multiple inflection points. The toner may be used in an electrophotographic image forming apparatus.
    Type: Application
    Filed: July 22, 2009
    Publication date: May 19, 2011
    Applicant: Samsung Fine Chemicals Co., Ltd.
    Inventors: Jae Bum Park, Woo Young Yang, Keon Il Kim, Dae Il Hwang, Il Hyuk Kim, Il Sun Hwang, Jae Kwang Hwang, Dae Woong Choi, Dong Won Kim, Duck Kyun Ahn
  • Publication number: 20110033207
    Abstract: A toner using an organic solvent-insoluble resin and a method of preparing the same. The toner includes: a binder resin that comprises an organic solvent-insoluble resin and an acid group-containing resin, a coloring agent, and at least one additive, wherein the organic solvent-insoluble resin is a crosslinked polyester resin or a cyclic olefin co-polymer (COC) resin, and the ratio of the organic solvent-insoluble resin to the acid group-containing resin is in the range of 5:95 to 40:60 on a weight basis. The toner can be applied to an electrophotographic imaging apparatus.
    Type: Application
    Filed: March 26, 2009
    Publication date: February 10, 2011
    Applicant: SAMSUNG FINE CHEMICALS CO., LTD.
    Inventors: Duck Kyun Ahn, Woo Young Yang, Keon II Kim, Dae II Hwang, II Hyuk Kim, Jae Bum Park, II Sun Hwang, Jae Kwang Hwang, Dae Woong Choi, Dong Won Kim
  • Publication number: 20100239972
    Abstract: Provided are a toner using a resin having an active hydrogen-containing group, and a method of preparing the toner. The toner using a resin having an active hydrogen-containing group includes a binder resin (A), a cross-linked resin including a THF insoluble content of 99-100 weight %, a colorant, and at least one additive. The cross-linked resin is arranged in the form of a plurality of islands in each particle of the toner.
    Type: Application
    Filed: October 22, 2008
    Publication date: September 23, 2010
    Applicant: SAMSUNG FINE CHEMICALS CO., LTD.
    Inventors: Dong Won Kim, Woo Young Yang, Keon II Kim, Dae II Hwang, II Hyuk Kim, Jae Bum Park, II Sun Hwang, Jae Kwang Hwang, Dae Woong Choi, Duck Kyun Ahn
  • Publication number: 20100232837
    Abstract: A toner has a core-shell structure including a toner core portion having a resin with an active hydrogenactive hydrogen containing group, a colorant and at least one additive, and a toner shell portion surrounding the toner core portion, wherein the toner shell portion includes a cross-linked resin prepared by reaction of at least a portion of the active hydrogen containing group and the cross-linking agent.
    Type: Application
    Filed: October 22, 2008
    Publication date: September 16, 2010
    Applicant: SAMSUNG FINE CHEMICALS CO., LTD
    Inventors: Dae Il Hwang, Woo Young Yang, Keon Il Kim, Il Hyuk Kim, Jae Bum Park, Il Sun Hwang, Jae Kwang Hwang, Dae Woong Choi, Dong Won Kim, Duck Kyun Ahn