Patents by Inventor Masahide Yamagata

Masahide Yamagata 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: 8117570
    Abstract: An integrated circuit design system able to generate circuit data enabling a clear grasp of power switch cells and circuit cells whose power is cut off without obstructing the efficiency of the design, a method of same, and a program of same, wherein in the description of RTL data generated at an RTL data generation unit, a hierarchical block of an upper level with a lower level comprised of a hierarchical block corresponding to a circuit whose power should be cut off in response to a control signal and a predetermined virtual power switch cell to which this control signal is input is prepared. By obtaining a grasp of the relationship between the virtual power switch cells in the description of the RTL data and the hierarchical blocks of the same level as the virtual power switch cells, the relationship between the power switch cells and the circuits whose power should be cut off in a real circuit can be clearly grasped.
    Type: Grant
    Filed: January 10, 2008
    Date of Patent: February 14, 2012
    Assignee: Sony Corporation
    Inventor: Masahide Yamagata
  • Publication number: 20080120587
    Abstract: An integrated circuit design system able to generate circuit data enabling a clear grasp of power switch cells and circuit cells whose power is cut off without obstructing the efficiency of the design, a method of same, and a program of same, wherein in the description of RTL data generated at an RTL data generation unit, a hierarchical block of an upper level with a lower level comprised of a hierarchical block corresponding to a circuit whose power should be cut off in response to a control signal and a predetermined virtual power switch cell to which this control signal is input is prepared. By obtaining a grasp of the relationship between the virtual power switch cells in the description of the RTL data and the hierarchical blocks of the same level as the virtual power switch cells, the relationship between the power switch cells and the circuits whose power should be cut off in a real circuit can be clearly grasped.
    Type: Application
    Filed: January 10, 2008
    Publication date: May 22, 2008
    Applicant: Sony Corporation
    Inventor: Masahide Yamagata
  • Patent number: 7370293
    Abstract: An integrated circuit design system able to generate circuit data enabling a clear grasp of power switch cells and circuit cells whose power is cut off without obstructing the efficiency of the design, a method of same, and a program of same, wherein in the description of RTL data generated at an RTL data generation unit, a hierarchical block of an upper level with a lower level comprised of a hierarchical block corresponding to a circuit whose power should be cut off in response to a control signal and a predetermined virtual power switch cell to which this control signal is input is prepared. By obtaining a grasp of the relationship between the virtual power switch cells in the description of the RTL data and the hierarchical blocks of the same level as the virtual power switch cells, the relationship between the power switch cells and the circuits whose power should be cut off in a real circuit can be clearly grasped.
    Type: Grant
    Filed: February 23, 2005
    Date of Patent: May 6, 2008
    Assignee: Sony Corporation
    Inventor: Masahide Yamagata
  • Publication number: 20050204317
    Abstract: An integrated circuit design system able to generate circuit data enabling a clear grasp of power switch cells and circuit cells whose power is cut off without obstructing the efficiency of the design, a method of same, and a program of same, wherein in the description of RTL data generated at an RTL data generation unit, a hierarchical block of an upper level with a lower level comprised of a hierarchical block corresponding to a circuit whose power should be cut off in response to a control signal and a predetermined virtual power switch cell to which this control signal is input is prepared. By obtaining a grasp of the relationship between the virtual power switch cells in the description of the RTL data and the hierarchical blocks of the same level as the virtual power switch cells, the relationship between the power switch cells and the circuits whose power should be cut off in a real circuit can be clearly grasped.
    Type: Application
    Filed: February 23, 2005
    Publication date: September 15, 2005
    Applicant: Sony Corporation
    Inventor: Masahide Yamagata