Patents by Inventor Kumarswamy Ramarao

Kumarswamy Ramarao 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).

  • Modeling miller effect in static timing analysis
    Patent number: 6940293
    Abstract: A method is contemplated. According to the method, capacitances in a first resistance/capacitance (RC) extraction corresponding to a circuit are modified. Each capacitance is modified to estimate Miller effect on that capacitance. A ratio of a total capacitance on a first wire after the modification in the first RC extraction to a total capacitance on the first wire before the modification in the first RC extraction is calculated. Capacitances in a second RC extraction that are coupled to the first wire are modified according to the ratio. The second RC extraction is a reduced extraction as compared to the first RC extraction. A timing analysis is performed for the circuit using the second RC extraction with capacitances modified to estimate Miller effect.
    Type: Grant
    Filed: August 18, 2004
    Date of Patent: September 6, 2005
    Assignee: Broadcom Corporation
    Inventors: Kumarswamy Ramarao, Matthew J. Page
  • Modeling miller effect in static timing analysis
    Publication number: 20050012509
    Abstract: A method is contemplated. According to the method, capacitances in a first resistance/capacitance (RC) extraction corresponding to a circuit are modified. Each capacitance is modified to estimate Miller effect on that capacitance. A ratio of a total capacitance on a first wire after the modification in the first RC extraction to a total capacitance on the first wire before the modification in the first RC extraction is calculated. Capacitances in a second RC extraction that are coupled to the first wire are modified according to the ratio. The second RC extraction is a reduced extraction as compared to the first RC extraction. A timing analysis is performed for the circuit using the second RC extraction with capacitances modified to estimate Miller effect.
    Type: Application
    Filed: August 18, 2004
    Publication date: January 20, 2005
    Inventors: Kumarswamy Ramarao, Matthew Page
  • Modeling miller effect in static timing analysis
    Patent number: 6791343
    Abstract: A method is contemplated. According to the method, capacitances in a first resistance/capacitance (RC) extraction corresponding to a circuit are modified. Each capacitance is modified to estimate Miller effect on that capacitance. A ratio of a total capacitance on a first wire after the modification in the first RC extraction to a total capacitance on the first wire before the modification in the first RC extraction is calculated. Capacitances in a second RC extraction that are coupled to the first wire are modified according to the ratio. The second RC extraction is a reduced extraction as compared to the first RC extraction. A timing analysis is performed for the circuit using the second RC extraction with capacitances modified to estimate Miller effect.
    Type: Grant
    Filed: November 27, 2002
    Date of Patent: September 14, 2004
    Assignee: Broadcom Corporation
    Inventors: Kumarswamy Ramarao, Matthew J. Page
  • Modeling miller effect in static timing analysis
    Publication number: 20040100286
    Abstract: A method is contemplated. According to the method, capacitances in a first resistance/capacitance (RC) extraction corresponding to a circuit are modified. Each capacitance is modified to estimate Miller effect on that capacitance. A ratio of a total capacitance on a first wire after the modification in the first RC extraction to a total capacitance on the first wire before the modification in the first RC extraction is calculated. Capacitances in a second RC extraction that are coupled to the first wire are modified according to the ratio. The second RC extraction is a reduced extraction as compared to the first RC extraction. A timing analysis is performed for the circuit using the second RC extraction with capacitances modified to estimate Miller effect.
    Type: Application
    Filed: November 27, 2002
    Publication date: May 27, 2004
    Inventors: Kumarswamy Ramarao, Matthew J. Page