Patents by Inventor William Ching-Chit Hung

William Ching-Chit Hung 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).

  • Channel processor using reduced complexity LDPC decoder
    Patent number: 7222289
    Abstract: A low-density parity check device can process data using a special low-density parity check matrix having a size of n-rows by m-columns. By styling the matrix such that the matrix is composed of p equal-size sqaure sub-matrices, only the first row of the first sub-matrix need be generated and stored. By then further constraining each of the sub-matrices to form various sub-portions, with each sub-portion constructed such that any two columns within the sub-portion will have no common location containing a non-zero entry, processing advantages are gained.
    Type: Grant
    Filed: September 30, 2003
    Date of Patent: May 22, 2007
    Assignee: Certance LLC
    Inventor: William Ching-Chit Hung
  • Channel processor using reduced complexity LDPC decoder
    Publication number: 20040093554
    Abstract: A low-density parity check device can process data using a special low-density parity check matrix having a size of n-rows by m-columns. By styling the matrix such that the matrix is composed of p equal-size sqaure sub-matrices, only the first row of the first sub-matrix need be generated and stored. By then further constraining each of the sub-matrices to form various sub-portions, with each sub-portion constructed such that any two columns within the sub-portion will have no common location containing a non-zero entry, processing advantages are gained.
    Type: Application
    Filed: September 30, 2003
    Publication date: May 13, 2004
    Applicant: CERTANCE LLC
    Inventor: William Ching-Chit Hung