Patents by Inventor Yun Gu

Yun Gu 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: 8164644
    Abstract: Provided are a method and apparatus for generating a media signal by using state information. The method using the apparatus includes acquiring at least one type of state information selected from state information about a subject and state information about the apparatus, and generating a media signal by using the at least one type of state information.
    Type: Grant
    Filed: December 9, 2008
    Date of Patent: April 24, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Yun-gu Lee, Byung-cheol Song
  • Patent number: 8111914
    Abstract: Provided are an image encoding method and apparatus and an image decoding method and apparatus that are capable of canceling a correlation remaining in a residual image by predicting the residual image by using residual pixel values of restored neighboring pixels of a current block and then encoding only the difference between the residual image and a predicted image of the residual image, where the residual image is obtained using an inter color compensation algorithm that predicts one of a plurality of color component images constituting an image by using one of the remnants of the color component images.
    Type: Grant
    Filed: January 11, 2008
    Date of Patent: February 7, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Yun-gu Lee, Byung-cheol Song, Nak-hoon Kim
  • Patent number: 8050322
    Abstract: A bitrate control method and apparatus for video sequence coding by using only intra pictures are provided. The rate control method includes: separating a video sequence formed only with intra pictures, into picture group units, slice units, and macroblock units; and performing bitrate control so that a predetermined amount of bits can be generated when encoding is performed. According to the method and apparatus, overflow and underflow of a buffer can be prevented.
    Type: Grant
    Filed: January 14, 2008
    Date of Patent: November 1, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Nak-hoon Kim, Byung-cheol Song, Yun-gu Lee
  • Publication number: 20110103469
    Abstract: An entropy encoding method and apparatus implementing the same, the method including: generating bitstreams of data groups by performing entropy encoding on a plurality of symbols of the data groups and storing the bitstreams in a storage unit by allocating a plurality of divided segments of the storage unit according to properties of the bitstreams.
    Type: Application
    Filed: November 1, 2010
    Publication date: May 5, 2011
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Yun-gu LEE
  • Publication number: 20110051815
    Abstract: An image data encoding and decoding method are provided, the encoding method including: compressing blocks of a first frame that is a reference frame, in units of a predetermined-sized block; determining whether each of the compressed blocks satisfies a respective target compression ratio; and selectively storing each of the compressed blocks based on the corresponding determination result for the respective compressed block.
    Type: Application
    Filed: June 25, 2010
    Publication date: March 3, 2011
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Yun-gu LEE
  • Patent number: 7729562
    Abstract: A method of detecting the alignment error of lenses and reducing image distortion attributable to the alignment error in a lens-type 3-dimensional liquid crystal display monitor. A method of detecting the alignment error of lenses in a 3D display using a purpose-built test pattern image, which predicts the alignment error in such a way as to calculate variation in view indices of pixels in a lateral direction, observed by an eye of an observer, if there is alignment error in the lenses. A method of compensating for image distortion in a 3D monitor, including the steps of finding the relationship between the pixels of a Liquid Crystal Display (LDC) panel and the pixels of observed images, which are determined depending on the location of an observer; and compensating for image distortion attributable to the rotational and translational alignment error of the lenses based on the found relationship.
    Type: Grant
    Filed: January 13, 2006
    Date of Patent: June 1, 2010
    Assignee: Korea Advanced Institute of Science and Technology
    Inventors: Jong-Beom Ra, Yun-Gu Lee
  • Publication number: 20100128996
    Abstract: A method of encoding an image includes checking a storage status of a buffer storing encoded data, at every data unit equal to or less than at least one macroblock; rearranging information about a macroblock so that encoded data of the macroblock is reduced, based on the storage status of the buffer; and storing data encoded by using data of the image and the information about the macroblock, which is rearranged based on the storage status of the buffer, in the buffer.
    Type: Application
    Filed: November 13, 2009
    Publication date: May 27, 2010
    Applicant: Samsung Electronics Co., Ltd.
    Inventor: Yun-gu LEE
  • Patent number: 7702005
    Abstract: A method for transmitting audio data of a plurality of audio sources through a single SPDIF link, includes: sequencing and multiplexing the audio data of the plurality of audio sources to pack the audio data of the plurality of audio sources into a plurality of frames of a block; performing bi-phase mark encoding on the audio data in the frames; appending preambles Z, X, and Y of the AES3/SPDIF stream format to the frames according to the number of audio sources in a first mode, or appending preambles Z, X, and Y of the AES3/SPDIF stream format and a specific preamble differing from preambles Z, X, and Y to the frames according to the number of audio sources in a second mode; and outputting the frames carrying the audio data into the SPDIF link with a frame rate greater than an audio sampling frequency of one of the audio sources.
    Type: Grant
    Filed: August 17, 2006
    Date of Patent: April 20, 2010
    Assignee: Alpha Imaging Technology Corp.
    Inventors: Chun-Fu Lin, Ken-Ming Li, Xiao-Yun Gu, Chi-Chien Chen, Feng-Sheng Chang, Tao Liu, Ke-Fu Ji
  • Publication number: 20090254749
    Abstract: The present invention provides a cooperation method of a mobile hardware secure unit and a fixed hardware secure unit, comprising: providing user's identification information of a mobile hardware secure unit; providing platform's identification information of a computer-based or other-device-based fixed hardware secure unit; establishing a bidirectional communication pipe between the mobile and fixed hardware secure unit; and binding the mobile and fixed hardware secure units through interaction of the user's identification information and the platform's identification information. The present invention further provides a cooperation system of a mobile hardware secure unit and a fixed hardware secure unit as well as a computer device, with which the security solution based on a fixed hardware secure unit can be combined with a mobile hardware secure unit securing a user's identity.
    Type: Application
    Filed: December 19, 2008
    Publication date: October 8, 2009
    Applicants: BEIJING LENOVO SOFTWARE LTD., LENOVO (BEIJING) LIMITED
    Inventors: Xizhe Li, Hongping Tian, Wei Xie, Yun Gu, Xingzhong Mao, Chentao Yu
  • Publication number: 20090231457
    Abstract: Provided are a method and apparatus for generating a media signal by using state information. The method using the apparatus includes acquiring at least one type of state information selected from state information about a subject and state information about the apparatus, and generating a media signal by using the at least one type of state information.
    Type: Application
    Filed: December 9, 2008
    Publication date: September 17, 2009
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Yun-gu Lee, Byung-cheol Song
  • Publication number: 20090190659
    Abstract: A video encoding method and apparatus, and a video decoding method and apparatus, which are capable of improving efficiency of encoding a luminance component video signal by predicting information on various encoding modes of the luminance component video signal by using a result obtained by encoding a chrominance component video signal, are provided. Accordingly, a block mode and an intra-prediction mode of the luminance component video signal are predicted from a previously encoded and recovered chrominance component video signal, and the predicted block mode and the predicted intra-prediction mode are used to encode the luminance component video signal.
    Type: Application
    Filed: September 5, 2008
    Publication date: July 30, 2009
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Yun-gu Lee, Byung-cheol Song
  • Publication number: 20090185625
    Abstract: Provided is a method for controlling a buffer in a transmitter and a receiver of a video transmission system in an environment where a channel transfer rate varies. The method includes: if a channel transfer rate is changed, changing a capacity of a buffer in a transmitter being used in proportion to the c rate, the buffer temporarily storing and outputting the video data to a receiver, or changing the delay time of a buffer in the receiver by gradually changing an operating clock in the receiver.
    Type: Application
    Filed: August 27, 2008
    Publication date: July 23, 2009
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Yun-gu Lee, Byung-cheol Song
  • Publication number: 20090182669
    Abstract: The present invention discloses a card data management device comprising: a server interface module, for connecting the card data management device with a server and sending authorized data obtained from the server to a data management module; a data management module, for receiving the authorized data from the server via the server interface module and assigning the authorized data to at least one sub account; a binding relationship management module, for binding the at least one sub account with at least one card to create a binding relationship and downloading the authorized data in the at least one sub account to the corresponding card according to the binding relationship; a card management module connected with the binding relationship management module, for connecting and identifying the at least one card and sending the result of the card identification to the binding relationship management module.
    Type: Application
    Filed: January 9, 2009
    Publication date: July 16, 2009
    Applicant: Lenovo (Beijing) Limited
    Inventors: Hongping Tian, Xizhe Li, Wei Xie, Yun Gu
  • Publication number: 20090177616
    Abstract: A hardware security unit and a multiple-valued logic operational method thereof are provided, which comprises at least a first and a second multiple-valued logic calculation units, an operational unit, a judgment unit and an execution unit. The first multiple-valued logic calculation unit and the second multiple-valued logic calculation unit are connected to the operational unit, each of the multiple-valued logic calculation units comprises at least three registers for describing expected logical state, current logical state and a multiple-valued logic operator of a specific entity of the hardware security unit.
    Type: Application
    Filed: December 23, 2008
    Publication date: July 9, 2009
    Applicants: BEIJING LENOVO SOFTWARE LTD., LENOVO (BEIJING) LIMITED
    Inventors: Xizhe Li, Hongping Tian, Wei Xie, Yun Gu
  • Publication number: 20090147855
    Abstract: A method and apparatus for coding an image capable of performing a prediction coding process by using a correlation degree between neighboring pixels of a current block and neighboring pixels of a reference block, and an image decoding method and apparatus. In the method, reference block candidates having neighboring pixels similar to the neighboring pixels of the current block are selected, matching errors between selected reference block candidates and the current block are calculated, and a reference block candidate having the least matching error is determined to be a predicted block of the current block.
    Type: Application
    Filed: August 25, 2008
    Publication date: June 11, 2009
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: BYUNG-CHEOL SONG, Yun-gu Lee, Nak-hoon Kim
  • Publication number: 20090147856
    Abstract: Provided are video encoding and decoding methods and apparatuses for encoding a video by variably selecting one from two or more difference color formats. Accordingly, by using at least one of channel state information and a result of encoding a video in a predetermined encoding unit encoded in advance, whether or not to convert a video in a current encoding unit of an input RGB (red, green, blue) color format into a YCbCr color format is adaptively determined to perform encoding. Therefore, a video with uniform quality corresponding to a channel environment having a variable bit-rate can be provided.
    Type: Application
    Filed: August 29, 2008
    Publication date: June 11, 2009
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: BYUNG-CHEOL SONG, Yun-gu Lee, Nak-hoon Kim
  • Publication number: 20090046778
    Abstract: Provided are a bit rate control method and apparatus for intra-only coding, the method including calculating a similarity between at least one block group from among block groups including a plurality of macroblocks in a current frame to be encoded and at least one block group in a previous frame, which corresponds to the at least one block group in the current frame, determining a target bit amount of a current block group including a current macroblock using a video characteristic of the previous frame if the calculated similarity is greater than a threshold value, determining a target bit amount of the current macroblock based on the determined target bit amount of the current block group, and calculating a quantization parameter of the current macroblock based on the determined target bit amount of the current macroblock and the amount of bits generated for up to a previous macroblock.
    Type: Application
    Filed: March 26, 2008
    Publication date: February 19, 2009
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Yun-gu LEE, Byung-cheol SONG, Nak-hoon KIM
  • Publication number: 20080304759
    Abstract: Provided are an image encoding method and apparatus and an image decoding method and apparatus that are capable of canceling a correlation remaining in a residual image by predicting the residual image by using residual pixel values of restored neighboring pixels of a current block and then encoding only the difference between the residual image and a predicted image of the residual image, where the residual image is obtained using an inter color compensation algorithm that predicts one of a plurality of color component images constituting an image by using one of the remnants of the color component images.
    Type: Application
    Filed: January 11, 2008
    Publication date: December 11, 2008
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Yun-gu LEE, Byung-cheol SONG, Nak-hoon KIM
  • Publication number: 20080304564
    Abstract: A bitrate control method and apparatus for video sequence coding by using only intra pictures are provided. The rate control method includes: separating a video sequence formed only with intra pictures, into picture group units, slice units, and macroblock units; and performing bitrate control so that a predetermined amount of bits can be generated when encoding is performed. According to the method and apparatus, overflow and underflow of a buffer can be prevented.
    Type: Application
    Filed: January 14, 2008
    Publication date: December 11, 2008
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Nak-hoon KIM, Byung-cheol Song, Yun-gu Lee
  • Publication number: 20080304760
    Abstract: A method and apparatus for compensating for illumination of a reference block and a method and apparatus for encoding an image, using the illumination compensation method and apparatus, are provided. The method of compensating for illumination of a reference block includes: predicting the mean values of pixels of a current block and a reference block, based on restored values of pixels neighboring the current block, and restored values of pixels neighboring the reference block; and based on the predicted mean value of the pixels of the current block, the predicted mean value of the pixels of the reference block, and the values of the pixels of the current block and the reference block, determining an illumination compensation parameter.
    Type: Application
    Filed: April 23, 2008
    Publication date: December 11, 2008
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Yun-gu LEE, Byung-cheol SONG, Nak-hoon KIM