Patents by Inventor Jin Mu Wu

Jin Mu Wu 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: 9214955
    Abstract: A Boolean entropy decoder including a decoding module, a buffer and an updating module is provided. The decoder sequentially generates a first boolean value, a second boolean value and a third boolean value. The first and second boolean values are generated during a same cycle. The decoding module requires a first bit amount while generating a first value corresponding to the first boolean value, and requires a second bit amount while generating a second value corresponding to the second boolean value. The buffer temporarily stores a bit segment in the bitstream to be provided to the decoding module. The updating module fetches a new bit segment according to the first bit amount and the second bit amount and updates the buffer. The decoding module selectively updates a value corresponding to the third boolean value after the buffer is updated.
    Type: Grant
    Filed: December 23, 2011
    Date of Patent: December 15, 2015
    Assignee: MSTAR SEMICONDUCTOR, INC.
    Inventors: Ying-Chieh Tu, Jin-Mu Wu
  • Patent number: 8700687
    Abstract: A video codec method is provided, for processing video data processed by a Discrete Cosine Transformation (DCT) operation, comprising: (a) if a transformation matrix having a plurality of coefficients comprises at least one non-integer coefficient among the coefficients, multiplying the transformation matrix by a multiplication factor ? to make all coefficients of the transformation matrix integers, (b) estimating a compensation set, (c) performing a Column in Row out IDCT two-dimensional operation on the video data according to the transformation matrix and the compensation set, to obtain a compensated two-dimension operation result, (d) selectively dividing the compensated two-dimension operation result by ?2 to obtain an IDCT operation result.
    Type: Grant
    Filed: February 14, 2011
    Date of Patent: April 15, 2014
    Assignee: MStar Semiconductor, Inc.
    Inventors: Ying-Chieh Tu, Jin-Mu Wu, Yao-Hsin Wang
  • Publication number: 20130083860
    Abstract: A Boolean entropy decoder including a decoding module, a buffer and an updating module is provided. The decoder sequentially generates a first boolean value, a second boolean value and a third boolean value. The first and second boolean values are generated during a same cycle. The decoding module requires a first bit amount while generating a first value corresponding to the first boolean value, and requires a second bit amount while generating a second value corresponding to the second boolean value. The buffer temporarily stores a bit segment in the bitstream to be provided to the decoding module. The updating module fetches a new bit segment according to the first bit amount and the second bit amount and updates the buffer. The decoding module selectively updates a value corresponding to the third boolean value after the buffer is updated.
    Type: Application
    Filed: December 23, 2011
    Publication date: April 4, 2013
    Applicant: MStar Semiconductor, Inc.
    Inventors: Ying-Chieh Tu, Jin-Mu Wu
  • Publication number: 20120016922
    Abstract: A video codec method is provided, for processing video data processed by a Discrete Cosine Transformation (DCT) operation, comprising: (a) if a transformation matrix having a plurality of coefficients comprises at least one non-integer coefficient among the coefficients, multiplying the transformation matrix by a multiplication factor ? to make all coefficients of the transformation matrix integers, (b) estimating a compensation set, (c) performing a Column in Row out IDCT two-dimensional operation on the video data according to the transformation matrix and the compensation set, to obtain a compensated two-dimension operation result, (d) selectively dividing the compensated two-dimension operation result by ?2 to obtain an IDCT operation result.
    Type: Application
    Filed: February 14, 2011
    Publication date: January 19, 2012
    Applicant: MStar Semiconductor, Inc.
    Inventors: Ying-Chieh Tu, Jin-Mu Wu, Yao-Hsin Wang
  • Publication number: 20040223609
    Abstract: A method of encrypting binary-coded data using block encryption and a private key is characterized by generating from the key a cipher that changes block-by-block. A hardware implementation has a cipher-generating stage and a cipher-applying stage. The cipher-applying stage uses logic circuitry that performs the encryption with only simple switching operations of AND, XOR and OR, allowing very high speed performance.
    Type: Application
    Filed: October 29, 2003
    Publication date: November 11, 2004
    Applicant: Hai-O Informtech Sdn Bhd
    Inventor: Jin Mu Wu