Patents by Inventor Mika Nakata

Mika Nakata 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).

  • Standard cell, semiconductor integrated circuit device of standard cell scheme and layout design method for semiconductor integrated circuit device
    Patent number: 7309908
    Abstract: To prevent the potential inversion of a dynamic node attributed to the fact that any wiring line among standard cells as is made of a wiring layer at the same level as that of the dynamic node within a standard cell is laid in adjacency to the dynamic node. In adjacency to a dynamic node 101 within a standard cell, shield wiring lines 102a and 102b which are made of wiring layers at the same level as that of the dynamic node are laid so as to prevent any wiring line among standard cells from passing in adjacency to the dynamic node. The shield wiring lines can be replaced with a shield region or a wiring inhibition region.
    Type: Grant
    Filed: June 2, 2005
    Date of Patent: December 18, 2007
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Mitsushi Nozoe, Noriyuki Kimura, Mika Nakata
  • Standard cell, semiconductor integrated circuit device of standard cell scheme and layout design method for semiconductor integrated circuit device
    Publication number: 20050270823
    Abstract: To prevent the potential inversion of a dynamic node attributed to the fact that any wiring line among standard cells as is made of a wiring layer at the same level as that of the dynamic node within a standard cell is laid in adjacency to the dynamic node. In adjacency to a dynamic node 101 within a standard cell, shield wiring lines 102a and 102b which are made of wiring layers at the same level as that of the dynamic node are laid so as to prevent any wiring line among standard cells from passing in adjacency to the dynamic node. The shield wiring lines can be replaced with a shield region or a wiring inhibition region.
    Type: Application
    Filed: June 2, 2005
    Publication date: December 8, 2005
    Inventors: Mitsushi Nozoe, Noriyuki Kimura, Mika Nakata