Patents by Inventor Ruping Cao

Ruping Cao 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: 10929590
    Abstract: Techniques and mechanisms for the use of layout-versus-schematic (LVS) design tools to validate photonic integrated circuit designs. Various implementations employ alternate analysis techniques with LVS analysis tools to perform one or more LVS analysis processes on photonic integrated circuits. These analysis processes may include curvilinear design validation and the associated flow implementations.
    Type: Grant
    Filed: December 12, 2018
    Date of Patent: February 23, 2021
    Assignee: Mentor Graphics Corporation
    Inventors: Ruping Cao, John G. Ferguson, John D. Cayo, Alexandre Arriordaz
  • Publication number: 20190114384
    Abstract: Techniques and mechanisms for the use of layout-versus-schematic (LVS) design tools to validate photonic integrated circuit designs. Various implementations employ alternate analysis techniques with LVS analysis tools to perform one or more LVS analysis processes on photonic integrated circuits. These analysis processes may include curvilinear design validation and the associated flow implementations.
    Type: Application
    Filed: December 12, 2018
    Publication date: April 18, 2019
    Inventors: Ruping Cao, John G. Ferguson, John D. Cayo, Alexandre Arriordaz
  • Patent number: 10185799
    Abstract: Techniques and mechanisms for the use of layout-versus-schematic (LVS) design tools to validate photonic integrated circuit designs. Various implementations employ alternate analysis techniques with LVS analysis tools to perform one or more LVS analysis processes on photonic integrated circuits. These analysis processes may include curvilinear design validation and the associated flow implementations.
    Type: Grant
    Filed: April 22, 2015
    Date of Patent: January 22, 2019
    Assignee: Mentor Graphics Corporation
    Inventors: Ruping Cao, John G. Ferguson, John D. Cayo, Alexandre Arriordaz
  • Patent number: 9588137
    Abstract: The disclosure is related to an SSRM method for measuring the local resistivity and carrier concentration of a conductive sample. The method includes contacting the conductive sample at one side with an AFM probe and at another side with a contact electrode, modulating, at a modulation frequency, the force applied to maintain physical contact between the AFM probe and the sample while preserving the physical contact between the AFM probe and the sample, thereby modulating at the modulation frequency the spreading resistance of the sample; measuring the current flowing through the sample between the AFM probe and the contact electrode; and deriving from the measured current the modulated spreading resistance. Deriving the modulated spreading resistance includes measuring the spreading current using a current-to-voltage amplifier, converting the voltage signal into a resistance signal, and filtering out from the resistance signal, the resistance amplitude at the modulation frequency.
    Type: Grant
    Filed: September 6, 2013
    Date of Patent: March 7, 2017
    Assignee: IMEC
    Inventors: Pierre Eyben, Wilfried Vandervorst, Ruping Cao, Andreas Schulze
  • Publication number: 20160055289
    Abstract: Techniques and mechanisms for the use of layout-versus-schematic (LVS) design tools to validate photonic integrated circuit designs. Various implementations employ alternate analysis techniques with LVS analysis tools to perform one or more LVS analysis processes on photonic integrated circuits. These analysis processes may include curvilinear design validation and the associated flow implementations.
    Type: Application
    Filed: April 22, 2015
    Publication date: February 25, 2016
    Inventors: Ruping Cao, John G. Ferguson, John D. Cayo, Alexandre Arriordaz
  • Publication number: 20140068822
    Abstract: The disclosure is related to an SSRM method for measuring the local resistivity and carrier concentration of a conductive sample. The method includes contacting the conductive sample at one side with an AFM probe and at another side with a contact electrode, modulating, at a modulation frequency, the force applied to maintain physical contact between the AFM probe and the sample while preserving the physical contact between the AFM probe and the sample, thereby modulating at the modulation frequency the spreading resistance of the sample; measuring the current flowing through the sample between the AFM probe and the contact electrode; and deriving from the measured current the modulated spreading resistance. Deriving the modulated spreading resistance includes measuring the spreading current using a current-to-voltage amplifier, converting the voltage signal into a resistance signal, and filtering out from the resistance signal, the resistance amplitude at the modulation frequency.
    Type: Application
    Filed: September 6, 2013
    Publication date: March 6, 2014
    Applicant: IMEC
    Inventors: Pierre Eyben, Wilfried Vandervorst, Ruping Cao, Andreas Schulze