Patents by Inventor Katsuharu Suzuki

Katsuharu Suzuki 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).

  • Circuit analysis device allowing more accurate analysis of signal propagation delay in circuit representation of a highly abstract level
    Patent number: 7650582
    Abstract: The present invention provides a circuit analysis device including: storage unit having stored therein: connection information about multiple components; delay information including information about the delay time of a discrete component and a chain delay time which is a delay time in the case in which a chain delay effect is generated by a connection with another component about each kind of the multiple components; and chain effect propagating component information including information about kinds of chain effect propagating components which are components for transmitting the chain delay effect, and data processing unit for: referring to the information stored in the storage unit; performing a total delay time calculation process of sequentially adding the delay times of the components along a signal path in the circuit; and if the chain effect propagating component is halfway through the signal path in the total delay time calculation process, examining a connection relation between components that prec
    Type: Grant
    Filed: May 24, 2007
    Date of Patent: January 19, 2010
    Assignee: NEC Corporation
    Inventor: Katsuharu Suzuki
  • CIRCUIT ANALYSIS DEVICE ALLOWING MORE ACCURATE ANALYSIS OF SIGNAL PROPAGATION DELAY IN CIRCUIT REPRESENTATION OF A HIGHLY ABSTRACT LEVEL
    Publication number: 20070276617
    Abstract: The present invention provides a circuit analysis device including: storage unit having stored therein: connection information about multiple components; delay information including information about the delay time of a discrete component and a chain delay time which is a delay time in the case in which a chain delay effect is generated by a connection with another component about each kind of the multiple components; and chain effect propagating component information including information about kinds of chain effect propagating components which are components for transmitting the chain delay effect, and data processing unit for: referring to the information stored in the storage unit; performing a total delay time calculation process of sequentially adding the delay times of the components along a signal path in the circuit; and if the chain effect propagating component is halfway through the signal path in the total delay time calculation process, examining a connection relation between components that prec
    Type: Application
    Filed: May 24, 2007
    Publication date: November 29, 2007
    Inventor: Katsuharu SUZUKI