Patents by Inventor Euee-S Jang

Euee-S Jang 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: 20240114163
    Abstract: Disclosed is an encoder which receives first to third input frames included first intra period and outputs a bitstream corresponding to the third input frame. The encoder includes a motion compensation unit that generates a first reference frame corresponding to the first input frame and a second reference frame corresponding to the second input frame, a union operation unit that generates an overlap frame by performing a union operation based on the first reference frame and the second reference frame, and an inter prediction unit that generates an occupancy code by performing an inter prediction operation on the overlap frame and the third input frame. In this case, the bitstream includes the occupancy code.
    Type: Application
    Filed: September 15, 2023
    Publication date: April 4, 2024
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Eun Young CHANG, Euee S JANG, Xin LI, Jihun CHA, Tianyu DONG, Jae Young AHN
  • Publication number: 20230119281
    Abstract: A method of encoding an immersive video according to the present disclosure includes determining whether an input image is a first type, converting the input image into the first type when the input image is a second type different from the first type, encoding a converted image, and generating metadata for the encoded image.
    Type: Application
    Filed: October 6, 2022
    Publication date: April 20, 2023
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Kwan-Jung OH, Gwangsoon Lee, Euee S. JANG
  • Patent number: 9311275
    Abstract: Discrete cosine transform/inverse discrete cosine transform method and device are provided. The discrete cosine transform/inverse discrete cosine transform method includes: generating a table index for only an input value other than 0 (zero) out of input values of coordinates in an input block; reading one or more partial values corresponding to the table index out of a plurality of table information pieces which are generated and stored in advance so as to include partial values corresponding to a multiplication of a weight value and an index; and adding the read partial value and calculating the resultant value of each coordinate in an output block. Accordingly, it is possible to perform a fast DCT/IDCT operation and to reduce the energy consumption for the transform.
    Type: Grant
    Filed: July 9, 2010
    Date of Patent: April 12, 2016
    Assignee: IUCF-HYU (INDUSTRY-UNIVERSITY COOPERATION FOUNDATION, HANYANG UNIVERSITY)
    Inventors: Euee S Jang, Kiho Choi, Sunyoung Lee, Sikyoung Kim
  • Patent number: 9083972
    Abstract: Provided are bitstream encoding/decoding methods and devices. The decoder includes: a condition information extracting unit creating recognition information using syntax tree information indicating a hierarchical structure between syntax elements corresponding to bits of an input bitstream, respectively and rule description information indicating connectivity between the syntax elements; and a decoding unit decoding data contained in the bitstream into moving image data using the recognition information. Accordingly, it is possible to decode bitstreams encoded in a variety of types (syntax, semantics) corresponding to a variety of standards (for example, MPEG-1, MPEG-2, MPEG-4, and MPEG-4 AVC) by the use of the same information recognition method.
    Type: Grant
    Filed: June 26, 2006
    Date of Patent: July 14, 2015
    Assignee: HUMAX HOLDINGS CO., LTD.
    Inventors: Euee-S Jang, Sun-Young Lee, Chung-Ku Lee
  • Patent number: 9042439
    Abstract: A method of setting an order of reference frames for multi-view coding performed by one or more processors. The method includes selecting one or more frames of the same kind that have a same-view relation with said current frame and have an inter-view relation with a frame of the same kind, which is encoded or decoded immediately before; and encoding or decoding the current frame by making reference to the selected one or more kind. Further, the one or more frames of the same kind is a P frame.
    Type: Grant
    Filed: December 13, 2005
    Date of Patent: May 26, 2015
    Assignee: HUMAX HOLDINGS CO., LTD.
    Inventors: Yung-Lyul Lee, Euee-S Jang, Chung-Ku Lee
  • Patent number: 8385405
    Abstract: A coding/decoding device using a bit-precision is disclosed. A coding device includes a bit-precision selecting unit, selecting a bit-precision value according to data to be coded; and a coding unit, generating a bit-stream by coding the data according to the selected bit-precision value, whereas the selected bit-precision value is inserted into the bit-stream. With the present invention, video data can be entropy-coded by selectively determining the number of bits and there can be provided the decoding method with a little complexity which has not only the identical compression rate to the conventional entropy coding method but also no necessity of additional computation when video data is decoded.
    Type: Grant
    Filed: October 19, 2007
    Date of Patent: February 26, 2013
    Assignee: Humax Co., Ltd.
    Inventors: Euee-S Jang, Sun-Young Lee, Chung-Ku Lee
  • Patent number: 8331455
    Abstract: A video data encoding/decoding device and method are disclosed. The decoding device includes a syntax parsing unit, storing a plurality of element information, generated by syntax parsing of a bit stream using description information, in an element information storing unit; a connection controlling unit, successively selecting a plurality of functional units by using the description information, and selectively inputting element information predetermined for the selected functional unit of the plurality of element information stored in the element information storing unit; and a processing unit, comprising at least a functional unit performing a process predetermined by using the element information inputted by the connection controlling unit, and outputting corresponding result data. Accordingly, the present invention can decode a bit stream, decoded by various format in accordance with various standards, by using an identical information recognizing method.
    Type: Grant
    Filed: December 28, 2006
    Date of Patent: December 11, 2012
    Assignee: Humax Co., Ltd.
    Inventors: Euee-S Jang, Sun-Young Lee, Chung-Ku Lee
  • Publication number: 20120179734
    Abstract: Discrete cosine transform/inverse discrete cosine transform method and device are provided. The discrete cosine transform/inverse discrete cosine transform method includes: generating a table index for only an input value other than 0 (zero) out of input values of coordinates in an input block; reading one or more partial values corresponding to the table index out of a plurality of table information pieces which are generated and stored in advance so as to include partial values corresponding to a multiplication of a weight value and an index; and adding the read partial value and calculating the resultant value of each coordinate in an output block. Accordingly, it is possible to perform a fast DCT/IDCT operation and to reduce the energy consumption for the transform.
    Type: Application
    Filed: July 9, 2010
    Publication date: July 12, 2012
    Inventors: Euee S. Jang, Kiho Choi, Sunyoung Lee, Sikyoung Kim
  • Patent number: 8149920
    Abstract: A unified codec device and a method thereof are disclosed. The unified codec device in accordance with an embodiment of the present invention comprises a decoding control unit, which sets a connection relation of functional units by interpreting connection information from an inputted universal bitstream or data, and a functional group, which consists of a plurality of functional units and in which functional units corresponding to a sequential start control of the decoding control unit are sequentially activated to process a bitstream or the data, using the control parameter, to output the inputted bitstream as image data. Using the functional unit recombination technique in accordance with the present invention, the bitstreams based on various decoding standards can be encoded/decoded without restriction.
    Type: Grant
    Filed: December 14, 2005
    Date of Patent: April 3, 2012
    Assignee: Humax Co., Ltd.
    Inventors: Euee-S Jang, Sun-Young Lee, Chung-Ku Lee
  • Patent number: 8149922
    Abstract: A video unified codec device and corresponding video method. The unified codec device includes parsing and decoding functional units (PD FUs) extracting and grouping context information, control signals, and data in bit streams inputted according to different syntax data per codec, macro-block-based functional units (MB-based FUs) comprising block-based process units of each codec, for decoding data outputted from PD FUs, and a global control unit (GCU) for controlling MB-based FUs grouped after corresponding control signals and context information received from PD FUs to each codec and processing.
    Type: Grant
    Filed: October 21, 2005
    Date of Patent: April 3, 2012
    Assignee: Humax Co., Ltd.
    Inventors: Euee-S. Jang, Yung-Lyul Lee, Sun-Young Lee, Sung-Won Park, Jong-Woo Won, Yong Ho Cho, Chung-Ku Lee
  • Patent number: 8059720
    Abstract: In an image down-sampling transcoding method, by reducing an MPEG SP (simple profile) video bit stream having a CIF (Common Intermediate Format) size into a half in image size in a pixel domain, the video bit stream is converted into a H.264 BP (Baseline Profile) video stream having a QCIF (Quarter CIF) size. Accordingly, it is possible to down-sample an image from MPEG-4 to H.264 at a high speed.
    Type: Grant
    Filed: November 30, 2005
    Date of Patent: November 15, 2011
    Assignee: Humax Co., Ltd.
    Inventors: Yung-Lyul Lee, Euee-S. Jang, Chung-Ku Lee
  • Patent number: 7933336
    Abstract: Methods and devices are provided for down-sampling an image from H.264 to MPEG-4 at a high speed. The method for converting a first macro block having a first format into a second macro block having a second format includes: (a) determining a block mode of the second macro block and converting the first macro block into the second macro block with the determined block mode, when the number of intra macro blocks included in the first macro block satisfies a first condition; (b) determining a block mode of the second macro block and converting the first macro block into the second macro block with the determined block mode, when the number for inter macro blocks included in the first macro block satisfies a second condition; and (c) re-adjusting a motion vector of the second macro block, after the conversion of the first macro block into the second macro block is finished.
    Type: Grant
    Filed: November 30, 2005
    Date of Patent: April 26, 2011
    Assignee: Humax Co., Ltd.
    Inventors: Yung-Lyul Lee, Euee-S. Jang, Chung-Ku Lee
  • Patent number: 7924923
    Abstract: Provided are a motion estimation device and method adaptive to change in illumination. The motion estimation method includes the steps of: generating a current frame pattern block and a reference frame pattern block for a reference frame block; calculating the sum of absolute differences (SAD) for candidate pattern blocks and determining the candidate pattern block corresponding to the SAD satisfying a predetermined condition among the calculated SAD as a motion vector; encoding the current frame block, and adding flag information indicating the addition of a mean pixel value applied to the encoded current frame block and identification information on the encoding mode as header information corresponding to the encoded current frame block.
    Type: Grant
    Filed: November 30, 2005
    Date of Patent: April 12, 2011
    Assignee: Humax Co., Ltd.
    Inventors: Yung-Lyul Lee, Euee-S Jang, Chung-Ku Lee
  • Patent number: 7912131
    Abstract: There are provided selective prediction encoding and decoding methods and selective prediction encoding and decoding devices. The selective prediction encoding device selects and performs one of an AC/DC prediction encoding method and an intra prediction encoding method which corresponds to the smaller of code amount from AC/DC prediction and an amount of AVC intra coding, records information indicating the selected encoding method in a header of a bit stream, and transmits the bit stream to the selective prediction decoding device. The selective prediction decoding device decodes the transmitted bit stream by the use of a decoding process corresponding to the information recorded in the header. Accordingly, it is possible to improve compression ratio and image quality by using the selective prediction encoding and decoding methods.
    Type: Grant
    Filed: October 24, 2005
    Date of Patent: March 22, 2011
    Assignee: HUMAX, Co., Ltd.
    Inventors: Euee-S Jang, Yung-Lyul Lee, Sun-Young Lee, Sung-Won Park, Jong-Woo Won, Yong-Ho Cho, Chung-Ku Lee
  • Publication number: 20110064140
    Abstract: Provided are bitstream encoding/decoding methods and devices. The decoder includes: a condition information extracting unit creating recognition information using syntax tree information indicating a hierarchical structure between syntax elements corresponding to bits of an input bitstream, respectively and rule description information indicating connectivity between the syntax elements; and a decoding unit decoding data contained in the bitstream into moving image data using the recognition information. Accordingly, it is possible to decode bitstreams encoded in a variety of types (syntax, semantics) corresponding to a variety of standards (for example, MPEG-1, MPEG-2, MPEG-4, and MPEG-4 AVC) by the use of the same information recognition method.
    Type: Application
    Filed: June 26, 2006
    Publication date: March 17, 2011
    Applicant: Humax Co., Ltd.
    Inventors: Euee-S Jang, Sun-Young Lee, Chung-Ku Lee
  • Publication number: 20100316113
    Abstract: A coding/decoding device using a bit-precision is disclosed. A coding device includes a bit-precision selecting unit, selecting a bit-precision value according to data to be coded; and a coding unit, generating a bit-stream by coding the data according to the selected bit-precision value, whereas the selected bit-precision value is inserted into the bit-stream. With the present invention, video data can be entropy-coded by selectively determining the number of bits and there can be provided the decoding method with a little complexity which has not only the identical compression rate to the conventional entropy coding method but also no necessity of additional computation when video data is decoded.
    Type: Application
    Filed: October 19, 2007
    Publication date: December 16, 2010
    Inventors: Euee-S Jang, Sun-Young Lee, Chung-Ku Lee
  • Publication number: 20090161767
    Abstract: A unified codec device and a method thereof are disclosed. The unified codec device in accordance with an embodiment of the present invention comprises a decoding control unit, which sets a connection relation of functional units by interpreting connection information from an inputted universal bitstream or data, and a functional group, which consists of a plurality of functional units and in which functional units corresponding to a sequential start control of the decoding control unit are sequentially activated to process a bitstream or the data, using the control parameter, to output the inputted bitstream as image data. Using the functional unit recombination technique in accordance with the present invention, the bitstreams based on various decoding standards can be encoded/decoded without restriction.
    Type: Application
    Filed: December 14, 2005
    Publication date: June 25, 2009
    Inventors: Euee-S Jang, Sun-Young Lee, Chung-Ku Lee
  • Publication number: 20090003456
    Abstract: A video data encoding/decoding device and method are disclosed. The decoding device includes a syntax parsing unit, storing a plurality of element information, generated by syntax parsing of a bit stream using description information, in an element information storing unit; a connection controlling unit, successively selecting a plurality of functional units by using the description information, and selectively inputting element information predetermined for the selected functional unit of the plurality of element information stored in the element information storing unit; and a processing unit, comprising at least a functional unit performing a process predetermined by using the element information inputted by the connection controlling unit, and outputting corresponding result data. Accordingly, the present invention can decode a bit stream, decoded by various format in accordance with various standards, by using an identical information recognizing method.
    Type: Application
    Filed: December 28, 2006
    Publication date: January 1, 2009
    Inventors: Euee-S Jang, Sun-Young Lee, Chung-Ku Lee
  • Publication number: 20080130738
    Abstract: A method for setting the order of reference frames for multi-view coding and a recorded medium recording the method are disclosed. The method of setting the order of reference frames, in accordance with an embodiment of the present invention, comprises the steps of selecting the n (integer) number of frames of the same kind that have a same-view relation with said current frame and are encoded or decoded prior to said current frame as a first reference frame, selecting the m (integer) number of frames of the same kind that have a same-view relation with said current frame and have an inter-view relation with a frame of the same kind, which is encoded or decoded immediately before, as a second reference frame, wherein the frame of the same kind has a same-view relation with said current frame, and encoding or decoding said current frame by making reference to the frames of the same kind included in said first reference frame and said second reference frame.
    Type: Application
    Filed: December 13, 2005
    Publication date: June 5, 2008
    Inventors: Yung-Lyul Lee, Euee-S Jang, Chung-Ku Lee
  • Publication number: 20080037649
    Abstract: The present invention is directed to a video unified codec device and its method. According to an embodiment of this invention, the unified codec device comprises parsing and decoding functional units (PD FUs) extracting and grouping context information, control signals, and data in bit streams inputted according to different syntax data per codec, macro-block-based functional units (MB-based FUs) unified based on block-based process units of each codec, for decoding data outputted from PD FUs, and a global control unit (GCU) for controlling MB-based FUs grouped after corresponding control signals and context information received from PD FUs to each codec and processing. By this invention, a new concept and structure of unified codec corresponding to similarities, differences, and considerations between different codecs can be presented.
    Type: Application
    Filed: October 21, 2005
    Publication date: February 14, 2008
    Applicant: Humax Co., Ltd.
    Inventors: Euee-S. Jang, Yung-Lyul Lee, Sun-Young Lee, Sun-Won Park, Jong-Woo Won, Yong-Ho Cho, Chung-Ku Lee