Patents by Inventor Yi Hau Chen

Yi Hau Chen 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: 10237554
    Abstract: A method and apparatus for video encoding to generate a partitioned bitstream without buffering transform coefficient and/or prediction data for subsequent coding units are disclosed. An encoder incorporating an embodiment according to the present invention receives first video parameters associated with a current coding unit, wherein no first video parameters associated with subsequent coding units are buffered. The encoder then encodes the first video parameters to generate a current first compressed data corresponding to the current coding unit. A first memory address in the first logic unit is determined and the encoder provides the current first compressed data at the first memory address in the first logic unit.
    Type: Grant
    Filed: September 23, 2016
    Date of Patent: March 19, 2019
    Assignee: MEDIATEK INC.
    Inventors: Yung-Chang Chang, Chi-Cheng Ju, Yi-Hau Chen, De-Yuan Shen
  • Patent number: 9860530
    Abstract: A method and apparatus for loop processing of reconstructed video in an encoder system are disclosed. The loop processing comprises an in-loop filter and one or more adaptive filters. The filter parameters for the adaptive filter are derived from the pre-in-loop video data so that the adaptive filter processing can be applied to the in-loop processed video data without the need of waiting for completion of the in-loop filter processing for a picture or an image unit. In another embodiment, two adaptive filters derive their respective adaptive filter parameters based on the same pre-in-loop video data. In yet another embodiment, a moving window is used for image-unit-based coding system incorporating in-loop filter and one or more adaptive filters. The in-loop filter and the adaptive filter are applied to a moving window of pre-in-loop video data comprising one or more sub-regions from corresponding one or more image units.
    Type: Grant
    Filed: October 11, 2012
    Date of Patent: January 2, 2018
    Assignee: HFI INNOVATION INC.
    Inventors: Kun-Bin Lee, Yi-Hau Chen, Chi-Cheng Ju, Yu-Wen Huang, Shaw-Min Lei, Chih-Ming Fu, Ching-Yeh Chen, Chia-Yang Tsai, Chih-Wei Hsu
  • Publication number: 20170013263
    Abstract: A method and apparatus for video encoding to generate a partitioned bitstream without buffering transform coefficient and/or prediction data for subsequent coding units are disclosed. An encoder incorporating an embodiment according to the present invention receives first video parameters associated with a current coding unit, wherein no first video parameters associated with subsequent coding units are buffered. The encoder then encodes the first video parameters to generate a current first compressed data corresponding to the current coding unit. A first memory address in the first logic unit is determined and the encoder provides the current first compressed data at the first memory address in the first logic unit.
    Type: Application
    Filed: September 23, 2016
    Publication date: January 12, 2017
    Inventors: Yung-Chang Chang, Chi-Cheng Ju, Yi-Hau Chen, De-Yuan Shen
  • Patent number: 9503760
    Abstract: A method of binarizing an input symbol using a hybrid Truncated Rice/k-th order exp-Golomb binarization scheme with a Rice Parameter includes: determining a threshold; comparing the input symbol with the threshold; constructing a codeword using a Truncated Rice (TR) binarization process for the input symbol when a comparison result belongs to a first type of comparison result; and constructing a codeword with an initial prefix and a suffix for the input symbol when the comparison result belongs to a second type of comparison result; wherein the suffix is constructed using an exp-Golomb binarization process.
    Type: Grant
    Filed: August 15, 2013
    Date of Patent: November 22, 2016
    Assignee: MEDIATEK INC.
    Inventors: Kun-Bin Lee, Han-Liang Chou, Ting-An Lin, Yi-Hau Chen, Chi-Cheng Ju, Yen-Chieh Lai
  • Patent number: 9251410
    Abstract: A people counting system includes: a top-view, a first and a second side-view image-capturing device, capturing a top-view, a first and a second side-view image respectively; an image stitching module, stitching the top-view, the first and the second side-view image into an ultra wide-angle image; a ROI selecting module, selecting at least one recognition zone and a counting zone; a face recognition module, monitoring the recognition zone to determine a face location corresponding to a face through analyzing the recognition zone; a head recognition module, monitoring the counting zone to determine a head location corresponding to a head through analyzing the counting zone; an object tracking module, the head recognition module, generating a face track and a head track; and a people counting module, counting a first number of face tracks and a second number of head tracks passing through the counting zone and generating a counting result.
    Type: Grant
    Filed: March 23, 2015
    Date of Patent: February 2, 2016
    Assignee: QUANTA COMPUTER INC.
    Inventors: Keng-Sheng Lin, Po-Chi Huang, Yi-Hau Chen
  • Publication number: 20150326886
    Abstract: A method and apparatus for loop processing of reconstructed video in an encoder system are disclosed. The loop processing comprises an in-loop filter and one or more adaptive filters. The filter parameters for the adaptive filter are derived from the pre-in-loop video data so that the adaptive filter processing can be applied to the in-loop processed video data without the need of waiting for completion of the in-loop filter processing for a picture or an image unit. In another embodiment, two adaptive filters derive their respective adaptive filter parameters based on the same pre-in-loop video data. In yet another embodiment, a moving window is used for image-unit-based coding system incorporating in-loop filter and one or more adaptive filters. The in-loop filter and the adaptive filter are applied to a moving window of pre-in-loop video data comprising one or more sub-regions from corresponding one or more image units.
    Type: Application
    Filed: October 10, 2012
    Publication date: November 12, 2015
    Inventors: Yi-Hau CHEN, Kun-Bin LEE, Chi-Cheng JU, Yu-Wen HUANG, Shaw-Min LEI, Chih-Ming FU, Ching-Yeh CHEN, Chia-Yang TSAI, Chih-Wei HSU
  • Publication number: 20150049819
    Abstract: A method of binarizing an input symbol using a hybrid Truncated Rice/k-th order exp-Golomb binarization scheme with a Rice Parameter includes: determining a threshold; comparing the input symbol with the threshold; constructing a codeword using a Truncated Rice (TR) binarization process for the input symbol when a comparison result belongs to a first type of comparison result; and constructing a codeword with an initial prefix and a suffix for the input symbol when the comparison result belongs to a second type of comparison result; wherein the suffix is constructed using an exp-Golomb binarization process.
    Type: Application
    Filed: August 15, 2013
    Publication date: February 19, 2015
    Applicant: MEDIATEK INC.
    Inventors: Kun-Bin Lee, Han-Liang Chou, Ting-An Lin, Yi-Hau Chen, Chi-Cheng Ju, Yen-Chieh Lai
  • Patent number: 8854233
    Abstract: A method for generating a decoded value from a codeword which is binarized utilizing a concatenated unary/k-th order Exp-Golomb code includes: identifying a first portion of the codeword, a second portion of the codeword and a third portion of the codeword; generating an offset according to the second portion; decoding the third portion to generate an index value; and generating the decoded value by adding the offset and the index value.
    Type: Grant
    Filed: March 4, 2013
    Date of Patent: October 7, 2014
    Assignee: Mediatek Inc.
    Inventors: Ting-An Lin, Han-Liang Chou, Kun-Bin Lee, Yi-Hau Chen, Chi-Cheng Ju, Yen-Chieh Lai
  • Publication number: 20140269913
    Abstract: A method and apparatus for loop processing of reconstructed video in an encoder system are disclosed. The loop processing comprises an in-loop filter and one or more adaptive filters. The filter parameters for the adaptive filter are derived from the pre-in-loop video data so that the adaptive filter processing can be applied to the in-loop processed video data without the need of waiting for completion of the in-loop filter processing for a picture or an image unit. In another embodiment, two adaptive filters derive their respective adaptive filter parameters based on the same pre-in-loop video data. In yet another embodiment, a moving window is used for image-unit-based coding system incorporating in-loop filter and one or more adaptive filters. The in-loop filter and the adaptive filter are applied to a moving window of pre-in-loop video data comprising one or more sub-regions from corresponding one or more image units.
    Type: Application
    Filed: October 11, 2012
    Publication date: September 18, 2014
    Inventors: Kun-Bin Lee, Yi-Hau Chen, Chi-Cheng Ju, Yu-Wen Huang, Shaw-Min Lei, Chih-Ming Fu, Ching-Yeh Chen, Chia-Yang Tsai, Chih-Wei Hsu
  • Publication number: 20140247165
    Abstract: A method for generating a decoded value from a codeword which is binarized utilizing a concatenated unary/k-th order Exp-Golomb code includes: identifying a first portion of the codeword, a second portion of the codeword and a third portion of the codeword; generating an offset according to the second portion; decoding the third portion to generate an index value; and generating the decoded value by adding the offset and the index value.
    Type: Application
    Filed: March 4, 2013
    Publication date: September 4, 2014
    Applicant: MEDIATEK INC.
    Inventors: Ting-An Lin, Han-Liang Chou, Kun-Bin Lee, Yi-Hau Chen, Chi-Cheng Ju, Yen-Chieh Lai
  • Publication number: 20130121410
    Abstract: A method and apparatus for video encoding to generate a partitioned bitstream without buffering transform coefficient and/or prediction data for subsequent coding units are disclosed. An encoder incorporating an embodiment according to the present invention receives first video parameters associated with a current coding unit, wherein no first video parameters associated with subsequent coding units are buffered. The encoder then encodes the first video parameters to generate a current first compressed data corresponding to the current coding unit. A first memory address in the first logic unit is determined and the encoder provides the current first compressed data at the first memory address in the first logic unit.
    Type: Application
    Filed: November 14, 2011
    Publication date: May 16, 2013
    Applicant: MEDIATEK INC.
    Inventors: Yung-Chang Chang, Chi-Cheng Ju, Yi-Hau Chen, De-Yuan Shen
  • Patent number: 7865026
    Abstract: A data reuse method with level C+ for block matching motion estimation is disclosed. Compared to conventional Level C scheme, this invention can save large external memory bandwidth of motion estimation. The main idea is to reuse the overlapped searching region in the horizontal direction and partially reuse the overlapped searching region in the vertical direction. Several vertical successive current macroblocks are stitched, and the searching region of these current macroblocks is loaded, simultaneously. With the small overhead of internal memory, the reduction of external memory bandwidth is large. By case studies of H.264/AVC, the level C+ scheme can provide a good trade-off between the conventional Level C and D scheme.
    Type: Grant
    Filed: September 7, 2005
    Date of Patent: January 4, 2011
    Assignee: National Taiwan University
    Inventors: Liang Gee Chen, Chao Tsung Huang, Ching Yeh Chen, Yi Hau Chen