Patents by Inventor Chiharu Mizuno

Chiharu Mizuno 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: 6683336
    Abstract: A semiconductor integrated circuit, a supply method of supplying multiple supply voltages therefor, and a record medium for storing a program of the supply method for supplying multiple voltages therefor in which a first cell to which multiple supply voltages are supplied is extracted (Step S1), the extracted cells are divided into groups (Step S2), cells for voltage supply are added and arranged according to the number of the groups (Step S3), and the cell for the voltage supply are connected to the first cell for supplying the plurality of voltages through a net for a power source supply (Step S4).
    Type: Grant
    Filed: July 3, 2000
    Date of Patent: January 27, 2004
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Mutsunori Igarashi, Hiroshi Tanaka, Kimiyoshi Usami, Takashi Ishikawa, Masahiro Kanazawa, Chiharu Mizuno
  • Patent number: 6097043
    Abstract: A semiconductor integrated circuit, a supply method of supplying multiple supply voltages therefor, and a record medium for storing a program of the supply method for supplying multiple voltages therefore in which a first cell to which multiple supply voltages are supplied is extracted (Step S1), the extracted cells are divided into groups (Step S2), cells for voltage supply are added and arranged according to the number of the groups (Step S3), and the cell for the voltage supply are connected to the first cell for supplying the plurality of voltages through a net for a power source supply (Step S4).
    Type: Grant
    Filed: December 23, 1997
    Date of Patent: August 1, 2000
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Mutsunori Igarashi, Hiroshi Tanaka, Kimiyoshi Usami, Takashi Ishikawa, Masahiro Kanazawa, Chiharu Mizuno
  • Patent number: 5824570
    Abstract: A semiconductor integrated circuit capabling of reducing a chip area by facilitating optimization of a chip layout and a method for designing the same has been provided. For given gate level connection description, use cell information designating gates which should be designed by employing the cell patterns prepared in advance is generated. When the gate level connection description is developed into the transistor level, hybrid connection description including mixedly transistor level and gate level is then generated by employing the cell patterns relative to the gates which being designated by the use cell information and by developing gates which being not designated by the use cell information into transistor level. A layout is then designed based on the hybrid connection description including mixedly the transistor level and the gate level.
    Type: Grant
    Filed: March 15, 1996
    Date of Patent: October 20, 1998
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Sachiko Aoki, Chiharu Mizuno