Patents by Inventor Hong-Cheng Lin

Hong-Cheng Lin 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).

  • Motion vector refinement apparatus having motion vector predictor derivation circuit that is allowed to start new task without waiting for motion vector difference computation and associated motion vector refinement method
    Patent number: 11616970
    Abstract: A motion vector refinement apparatus includes a first storage device, a motion vector predictor (MVP) derivation circuit, and a decoder side motion vector refinement (DMVR) circuit. The MVP derivation circuit derives a first MVP for a current block, stores the first MVP into the first storage device, and performs a new task. The DMVR circuit performs a DMVR operation to derive a first motion vector difference (MVD) for the first MVP. The MVP derivation circuit starts performing the new task before the DMVR circuit finishes deriving the first MVD for the first MVP.
    Type: Grant
    Filed: January 25, 2022
    Date of Patent: March 28, 2023
    Assignee: MEDIATEK INC.
    Inventors: Chi-Hung Chen, Cheng-Han Li, Hong-Cheng Lin
  • Method and apparatus for generating motion field motion vectors for blocks of current frame in on-the-fly manner
    Patent number: 11025947
    Abstract: A motion vector (MV) projection method includes generating motion field motion vectors (MFMVs) for a first portion of a current frame by applying MV projection to MVs of a portion of each of reference frames and storing the MFMVs of the first portion of the current frame into an MFMV buffer, and generating MFMVs for a second portion of the current frame by applying MV projection to MVs of a portion of each of the reference frames and storing the MFMVs of the second portion of the current frame into the MFMV buffer. The second portion does not overlap the first portion. Before generating the MFMVs for the second portion of the current frame is done, at least one of the MFMVs of the first portion is read from the MFMV buffer and involved in motion vector determination of at least one coding block included in the first portion.
    Type: Grant
    Filed: November 26, 2019
    Date of Patent: June 1, 2021
    Assignee: MEDIATEK INC.
    Inventors: Yung-Chang Chang, Chia-Yun Cheng, Cheng-Han Li, Hong-Cheng Lin, Chi-Hung Chen
  • METHOD AND APPARATUS FOR GENERATING MOTION FIELD MOTION VECTORS FOR BLOCKS OF CURRENT FRAME IN ON-THE-FLY MANNER
    Publication number: 20200177909
    Abstract: A motion vector (MV) projection method includes generating motion field motion vectors (MFMVs) for a first portion of a current frame by applying MV projection to MVs of a portion of each of reference frames and storing the MFMVs of the first portion of the current frame into an MFMV buffer, and generating MFMVs for a second portion of the current frame by applying MV projection to MVs of a portion of each of the reference frames and storing the MFMVs of the second portion of the current frame into the MFMV buffer. The second portion does not overlap the first portion. Before generating the MFMVs for the second portion of the current frame is done, at least one of the MFMVs of the first portion is read from the MFMV buffer and involved in motion vector determination of at least one coding block included in the first portion.
    Type: Application
    Filed: November 26, 2019
    Publication date: June 4, 2020
    Inventors: Yung-Chang Chang, Chia-Yun Cheng, Cheng-Han Li, Hong-Cheng Lin, Chi-Hung Chen