Patents by Inventor Kohichi Sakaniwa

Kohichi Sakaniwa 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).

  • Decoding apparatus and decoding method
    Patent number: 8572462
    Abstract: A decoding apparatus for performing decoding processing of encoded data by using non-binary LDPC codes, includes: a logarithmic Fourier transform processing section, a variable node processing section, an edge coefficient processing section, and a check node processing section, wherein the logarithmic Fourier transform processing section performs Fourier transform processing and logarithmization processing on a probability vector of a symbol of an encoded frame data to output an initial value of logarithmic Fourier domain probability vector, and the variable node processing section, the edge coefficient processing section, and the check node processing section perform iteration processing by using a logarithmic Fourier domain probability vector.
    Type: Grant
    Filed: June 1, 2012
    Date of Patent: October 29, 2013
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Kenta Kasai, Kohichi Sakaniwa
  • DECODING APPARATUS AND DECODING METHOD
    Publication number: 20120284582
    Abstract: A decoding apparatus for performing decoding processing of encoded data by using non-binary LDPC codes, includes: a logarithmic Fourier transform processing section, a variable node processing section, an edge coefficient processing section, and a check node processing section, wherein the logarithmic Fourier transform processing section performs Fourier transform processing and logarithmization processing on a probability vector of a symbol of an encoded frame data to output an initial value of logarithmic Fourier domain probability vector, and the variable node processing section, the edge coefficient processing section, and the check node processing section perform iteration processing by using a logarithmic Fourier domain probability vector.
    Type: Application
    Filed: June 1, 2012
    Publication date: November 8, 2012
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Kenta KASAI, Kohichi Sakaniwa