Patents by Inventor Kazutoshi Yasunaga

Kazutoshi Yasunaga 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: 6330534
    Abstract: A random code vector reading section and a random codebook of a conventional CELP type speech coder/decoder are respectively replaced with an oscillator for outputting different vector streams in accordance with values of input seeds, and a seed storage section for storing a plurality of seeds. This makes it unnecessary to store fixed vectors as they are in a fixed codebook (ROM), thereby considerably reducing the memory capacity.
    Type: Grant
    Filed: November 15, 1999
    Date of Patent: December 11, 2001
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Kazutoshi Yasunaga, Toshiyuki Morii, Hiroyuki Ehara
  • Patent number: 6330535
    Abstract: A random code vector reading section and a random codebook of a conventional CELP type speech coder/decoder are respectively replaced with an oscillator for outputting different vector streams in accordance with values of input seeds, and a seed storage section for storing a plurality of seeds. This makes it unnecessary to store fixed vectors as they are in a fixed codebook (ROM), thereby considerably reducing the memory capacity.
    Type: Grant
    Filed: November 15, 1999
    Date of Patent: December 11, 2001
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Kazutoshi Yasunaga, Toshiyuki Morii, Taisuke Watanabe, Hiroyuki Ehara
  • Publication number: 20010039491
    Abstract: A random code vector reading section and a random codebook of a conventional CELP type speech coder/decoder are respectively replaced with an oscillator for outputting different vector streams in accordance with values of input seeds, and a seed storage section for storing a plurality of seeds. This makes it unnecessary to store fixed vectors as they are in a fixed codebook (ROM), thereby considerably reducing the memory capacity.
    Type: Application
    Filed: April 30, 2001
    Publication date: November 8, 2001
    Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., Ltd.
    Inventors: Kazutoshi Yasunaga, Toshiyuki Morii, Hiroyuki Ehara
  • Publication number: 20010034600
    Abstract: A random code vector reading section and a random codebook of a conventional CELP type speech coder/decoder are respectively replaced with an oscillator for outputting different vector streams in accordance with values of input seeds, and a seed storage section for storing a plurality of seeds. This makes it unnecessary to store fixed vectors as they are in a fixed codebook (ROM), thereby considerably reducing the memory capacity.
    Type: Application
    Filed: May 16, 2001
    Publication date: October 25, 2001
    Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., Ltd.
    Inventors: Kazutoshi Yasunaga, Toshiyuki Morii, Taisuke Watanabe, Hiroyuki Ehara
  • Publication number: 20010029448
    Abstract: A random code vector reading section and a random codebook of a conventional CELP type speech coder/decoder are respectively replaced with an oscillator for outputting different vector streams in accordance with values of input seeds, and a seed storage section for storing a plurality of seeds. This makes it unnecessary to store fixed vectors as they are in a fixed codebook (ROM), thereby considerably reducing the memory capacity.
    Type: Application
    Filed: May 7, 2001
    Publication date: October 11, 2001
    Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., Ltd.
    Inventors: Kazutoshi Yasunaga, Toshiyuki Morii, Hiroyuki Ehara
  • Publication number: 20010027391
    Abstract: A random code vector reading section and a random codebook of a conventional CELP type speech coder/decoder are respectively replaced with an oscillator for outputting different vector streams in accordance with values of input seeds, and a seed storage section for storing a plurality of seeds . This makes it unnecessary to store fixed vectors as they are in a fixed codebook (ROM), thereby considerably reducing the memory capacity.
    Type: Application
    Filed: April 30, 2001
    Publication date: October 4, 2001
    Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., Ltd.
    Inventors: Kazutoshi Yasunaga, Toshiyuki Morii, Hiroyuki Ehara