Patents by Inventor Kuniyoshi Kamei

Kuniyoshi Kamei 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).

  • Analog to digital converter, encoder, and recorded data reproducing apparatus
    Patent number: 6288668
    Abstract: An encoder for an A/D converter includes a plurality of ROM cells connected between bit lines and word lines. Each of the ROM cells is responsive to a word line select signal supplied to a word line associated with each of the ROM cells for supplying a digital output signal according to the word line select signal to a bit line associated with each of the ROM cells. A logic processor is coupled to one of the bit lines and to two of the word lines used to select a ROM cell connected to the bit line. The logic processor produces an output signal indicative of a selection of the ROM cell connected to the bit line, based on word line select signals supplied on the two word lines.
    Type: Grant
    Filed: February 21, 1996
    Date of Patent: September 11, 2001
    Assignee: Fujitsu Limited
    Inventors: Sanroku Tsukamoto, Ian Dedic, Kuniyoshi Kamei, Toshiaki Endo, Masaru Sawada, Hiroko Murakami
  • Analog to digital converter, encoder, and recorded data reproducing apparatus
    Patent number: 6288665
    Abstract: An encoder for an A/D converter includes a plurality of ROM cells connected between bit lines and word lines. Each of the ROM cells is responsive to a word line select signal supplied to a word line associated with each of the ROM cells for supplying a digital output signal according to the word line select signal to a bit line associated with each of the ROM cells. A logic processor is coupled to one of the bit lines and to two of the word lines used to select a ROM cell connected to the bit line. The logic processor produces an output signal indicative of a selection of the ROM cell connected to the bit line, based on word line select signals supplied on the two word lines.
    Type: Grant
    Filed: May 9, 2000
    Date of Patent: September 11, 2001
    Assignee: Fujitsu Limited
    Inventors: Sanroku Tsukamoto, Ian Dedic, Kuniyoshi Kamei, Toshiaki Endo, Masaru Sawada, Hiroko Murakami
  • Analog to digital converter, encoder, and recorded data reproducing apparatus
    Patent number: 6046694
    Abstract: An encoder for an A/D converter includes a plurality of ROM cells connected between bit lines and word lines. Each of the ROM cells is responsive to a word line select signal supplied to a word line associated with each of the ROM cells for supplying a digital output signal according to the word line select signal to a bit line associated with each of the ROM cells. A logic processor is coupled to one of the bit lines and to two of the word lines used to select a ROM cell connected to the bit line. The logic processor produces an output signal indicative of a selection of the ROM cell connected to the bit line, based on word line select signals supplied on the two word lines.
    Type: Grant
    Filed: February 21, 1996
    Date of Patent: April 4, 2000
    Assignee: Fujitsu Limited
    Inventors: Sanroku Tsukamoto, Ian Dedic, Kuniyoshi Kamei, Toshiaki Endo, Masaru Sawada, Hiroko Murakami