Patents by Inventor Yiliang Liu

Yiliang Liu 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).

  • Publication number: 20250012737
    Abstract: Optical measurement of a sample that includes a structure-of-interest (SOI) optically coupled to a section having an unknown structure is optically measured using an influence map of the deviation contribution from the unknown structure. The influence map is generated by obtaining metrology data for a plurality of locations that include the SOI and unknown structure and determining the deviation contribution at each location by decoupling the deviation contribution from base contributions from the SOI and unknown structure. During measurement of a location, the deviation contribution associated with that location may be obtained from the influence map and removed from the measured data. The processed data may be fit with a model that includes a rigorous model for the SOI and an effective model for the base contribution of the unknown structure to determine one or more parameters of the SOI.
    Type: Application
    Filed: November 22, 2022
    Publication date: January 9, 2025
    Applicant: Onto Innovation Inc.
    Inventors: Yiliang LIU, Yong LI, Yang WANG, Jingsheng SHI
  • Patent number: 12092962
    Abstract: Contamination of metrology data by non-target signals caused by the measurement spot being incident on target and non-target areas may be reduced or eliminated using local gradient based mixed modeling or a machine learning model. The local gradient based mixed modeling approach uses a mixed model based on a model of the target region and a term of the local gradient of measured signals, which may be determined from scan data. The machine learning approach obtains mixed metrology data from a plurality of locations with respect to the target. The mixed metrology data is a mixture of target signals from the target and non-target signals from a non-target area and is used by a trained machine learning model to determine target metrology data that includes target signals from the target without the non-target signals and is used to determine parameters of interest for the target.
    Type: Grant
    Filed: October 26, 2023
    Date of Patent: September 17, 2024
    Assignee: Onto Innovation Inc.
    Inventors: Jingsheng Shi, Yiliang Liu, Jie Li, Pedro Vagos
  • Patent number: 11915066
    Abstract: Systems and methods provide reception of a call to a first function, determination of a first configuration file associated with the first function, the first configuration file indicating a primary function, a secondary function and a relationship between a first property of the primary function and a second property of the secondary function, calling of the primary function and reception of a corresponding first result set, calling of the secondary function, the call to the secondary function including a filter on the second property based on values of the first result set associated with the first property, reception of a second result set corresponding to the call to the secondary function, generation of a composed result set based on the first result set, the second result set, and the relationship, and return of the composed result set in response to the call to the first function.
    Type: Grant
    Filed: May 12, 2021
    Date of Patent: February 27, 2024
    Assignee: SAP SE
    Inventors: Chen Feng, Yang Liu, Xia Yu, Yiliang Liu
  • Publication number: 20220365832
    Abstract: Systems and methods provide reception of a call to a first function, determination of a first configuration file associated with the first function, the first configuration file indicating a primary function, a secondary function and a relationship between a first property of the primary function and a second property of the secondary function, calling of the primary function and reception of a corresponding first result set, calling of the secondary function, the call to the secondary function including a filter on the second property based on values of the first result set associated with the first property, reception of a second result set corresponding to the call to the secondary function, generation of a composed result set based on the first result set, the second result set, and the relationship, and return of the composed result set in response to the call to the first function.
    Type: Application
    Filed: May 12, 2021
    Publication date: November 17, 2022
    Inventors: Chen FENG, Yang LIU, Xia YU, Yiliang LIU
  • Patent number: 8239133
    Abstract: A global positioning system and dead reckoning (GPS&DR) integrated navigation system includes a GPS receiver coupled to a moving object for periodically generating GPS navigation information of said moving object, a DR system coupled to said moving object for periodically calculating DR navigation information of said moving object, and a filter coupled to said GPS receiver and said DR system for periodically calculating navigation information of said moving object, wherein said filter gets observation information by integrating said GPS navigation information and said DR navigation information according to a weight value of said GPS navigation information and a weight value of said DR navigation information, and calculates a current navigation information by integrating said observation information with previous navigation information from a plurality of previous cycles.
    Type: Grant
    Filed: June 30, 2009
    Date of Patent: August 7, 2012
    Assignee: O2Micro, International
    Inventors: James Wang, Xiaoguang Yu, Zhongbao Feng, Yiliang Liu, Shenghong Lu
  • Publication number: 20100030470
    Abstract: A global positioning system and dead reckoning (GPS&DR) integrated navigation system includes a GPS receiver coupled to a moving object for periodically generating GPS navigation information of said moving object, a DR system coupled to said moving object for periodically calculating DR navigation information of said moving object, and a filter coupled to said GPS receiver and said DR system for periodically calculating navigation information of said moving object, wherein said filter gets observation information by integrating said GPS navigation information and said DR navigation information according to a weight value of said GPS navigation information and a weight value of said DR navigation information, and calculates a current navigation information by integrating said observation information with previous navigation information from a plurality of previous cycles.
    Type: Application
    Filed: June 30, 2009
    Publication date: February 4, 2010
    Applicant: O2Micro, Inc.
    Inventors: James Wang, Xiaoguang Yu, Zhongbao Feng, Yiliang Liu, Shenghong Lu