Patents by Inventor Lang Lin

Lang Lin 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: 12536294
    Abstract: Techniques for security vulnerability assessment of security-sensitive circuit designs are described. A placement of security-sensitive components of a design may be based on constraints related to how far apart a relevant set of security-sensitive components are allowed without consuming too much power and how to optimize the placement to minimize electromagnetic side-channel leakage or other security vulnerabilities. In one embodiment, a method may receive data that includes a representation of a design of an IC and may identify security-sensitive components of the design from the data. The method may determine a placement for the design based on constraints on a level of security vulnerabilities of the security-sensitive components and may perform a power simulation for the design based on the placement. The method may generate an assessment of the level of security vulnerabilities of the security-sensitive components based on the power simulation to adjust the placement for the design.
    Type: Grant
    Filed: December 14, 2022
    Date of Patent: January 27, 2026
    Assignee: ANSYS, INC.
    Inventors: Lang Lin, Kayhan Kucukcakar, Jimin Wen, Norman Chang, Preeti Gupta, Hua Chen
  • Patent number: 12435513
    Abstract: A reinforced recycled block/aggregate concrete precast column and a construction method are provided. The reinforced recycled block/aggregate concrete precast column includes several first one-bar hoops, vertical reinforcement bars, several second one-bar hoops, a flexible hinge area, and recycled block/aggregate concrete; the first one-bar hoops and second one-bar hoops are each provided with an anchor end; the first one-bar hoops and second one-bar hoops are disposed in the flexible hinge area, and only the second one-bar hoops are disposed outside the flexible hinge area; the outer edge of each first one-bar hoop is flush with the outer surface of the reinforced recycled block/aggregate concrete precast column; and the interior of the reinforced recycled block/aggregate concrete precast column is filled with the recycled block/aggregate concrete, thereby greatly increasing the recycling rate of engineering waste, reducing shedding of a concrete protective layer in the flexible hinge area of the column.
    Type: Grant
    Filed: December 31, 2020
    Date of Patent: October 7, 2025
    Assignee: SOUTH CHINA UNIVERSITY OF TECHNOLOGY
    Inventors: Bo Wu, Lang Lin
  • Patent number: 12439007
    Abstract: A monitoring system includes a doorbell unit that includes a camera and a display and that is configured to receive a request to access the property. The monitoring system includes a monitor control unit that is configured to determine an authentication protocol for determining whether to grant the visitor access to the property. The monitor control unit generates a first image and transmits authentication data to a computing device. The monitor control unit provides the first image and instructions to output the first image on the display of the doorbell unit. The monitor control unit receives a second image captured by the camera of the doorbell unit. The monitor control unit determines whether the second image includes a representation of data that is based on processing the first image in combination with the authentication data. The monitor control unit grants or denies the visitor access to the property.
    Type: Grant
    Filed: December 20, 2022
    Date of Patent: October 7, 2025
    Assignee: Alarm.com Incorporated
    Inventor: Lang Lin
  • Patent number: 12393686
    Abstract: A method in one embodiment creates a model of an authentic IC for use in comparisons with counterfeit ICs. The model can be created by determining a first or initial set of points of interest (POIs) on the simulated physical (e.g., gate level) layout and simulating side channel leakage from each POI and then expanding the size of the POI and repeating the simulation and comparing successive simulation results (between successive sizes of POIs for a given POI) to determine if a solution for the size of the POI has converged. The final POIs are then processed in a simulation that can use multiple payloads (e.g., cryptographic data) over the entire set of final POIs, and the resulting data set can be used to create the model.
    Type: Grant
    Filed: December 18, 2023
    Date of Patent: August 19, 2025
    Assignee: ANSYS, INC.
    Inventors: Deqi Zhu, Hua Chen, Jimin Wen, Lang Lin, Norman Chang, Dinesh Selvakumaran, Gang Ni
  • Publication number: 20250088358
    Abstract: Methods, machine readable media and systems for evaluating, through one or more simulations, the leakage of sensitive data in an integrated circuit, such as cryptographic data or keys, are described. The embodiments can use machine learning models, such as one or more neural networks to generate one or more leakage related scores for each portion in a set of portions of the cryptographic data. In one embodiment, leakage data associated the first set of POIs with one or more neural networks is processed by the one or more neural networks to identify the POIs that leak the most and determine one or more scores for each portion in the set of portions of the cryptographic data.
    Type: Application
    Filed: November 22, 2024
    Publication date: March 13, 2025
    Inventors: Jimin Wen, Hua Chen, Deqi Zhu, Lang Lin, Norman Chang, Chia-Wei Chen
  • Patent number: 12177349
    Abstract: Methods, machine readable media and systems for evaluating, through one or more simulations, the leakage of sensitive data in an integrated circuit, such as cryptographic data or keys, are described. The embodiments can use machine learning models, such as one or more neural networks to generate one or more leakage related scores for each portion in a set of portions of the cryptographic data. In one embodiment, leakage data associated the first set of POIs with one or more neural networks is processed by the one or more neural networks to identify the POIs that leak the most and determine one or more scores for each portion in the set of portions of the cryptographic data.
    Type: Grant
    Filed: October 11, 2021
    Date of Patent: December 24, 2024
    Assignee: ANSYS, INC.
    Inventors: Jimin Wen, Hua Chen, Deqi Zhu, Lang Lin, Norman Chang, Chia-Wei Chen
  • Patent number: 11995187
    Abstract: Methods, machine readable media and systems for a method to determine if a model of an integrated circuit (IC) includes a Trojan component are described. In one embodiment, a method can include the following operations: splitting the model of the IC into a plurality of tiles; simulating the IC with an elevated temperature of each tile to predetermined level; computing a temperature-dependent leakage power for each tile; and identifying a tile of the IC as including a Trojan component based on the temperature-dependent leakage power computed.
    Type: Grant
    Filed: November 24, 2020
    Date of Patent: May 28, 2024
    Assignee: ANSYS, INC.
    Inventors: Dinesh Kumar Selvakumaran, Deqi Zhu, Lang Lin, Norman Chang, Hsiming Pan
  • Patent number: 11973868
    Abstract: Methods, machine readable media and systems for near-field electromagnetic simulation for side-channel emission analysis of an integrated circuit (IC) are described. In one embodiment, a method can include the following operations: simulating EM field strengths for a plurality of grid partitions of a circuit area of the IC based on a cryptographic work load applied to a model of the IC; identifying one or more of the grid partitions as a security sensitive region for the IC based on the EM field strengths, wherein one or more grid partitions outside of the security sensitive region are identified as non-security sensitive regions for the IC; and simulating EM fields for the IC to perform the EM side-channel emission analysis, wherein contributions of the EM fields from the non-security sensitive regions for the EM side-channel emission analysis are based on a linear superposition of wire currents in the non-security sensitive regions of the IC.
    Type: Grant
    Filed: September 22, 2020
    Date of Patent: April 30, 2024
    Assignee: ANSYS, INC.
    Inventors: Deqi Zhu, Norman Chang, Lang Lin, Dinesh Kumar Selvakumaran, Yu Lu
  • Publication number: 20240119147
    Abstract: A method in one embodiment creates a model of an authentic IC for use in comparisons with counterfeit ICs. The model can be created by determining a first or initial set of points of interest (POIs) on the simulated physical (e.g., gate level) layout and simulating side channel leakage from each POI and then expanding the size of the POI and repeating the simulation and comparing successive simulation results (between successive sizes of POIs for a given POI) to determine if a solution for the size of the POI has converged. The final POIs are then processed in a simulation that can use multiple payloads (e.g., cryptographic data) over the entire set of final POIs, and the resulting data set can be used to create the model.
    Type: Application
    Filed: December 18, 2023
    Publication date: April 11, 2024
    Inventors: Deqi Zhu, Hua Chen, Jimin Wen, Lang Lin, Norman Chang, Dinesh Selvakumaran, Gang Ni
  • Patent number: 11880456
    Abstract: A method in one embodiment creates a model of an authentic IC for use in comparisons with counterfeit ICs. The model can be created by determining a first or initial set of points of interest (POIs) on the simulated physical (e.g., gate level) layout and simulating side channel leakage from each POI and then expanding the size of the POI and repeating the simulation and comparing successive simulation results (between successive sizes of POIs for a given POI) to determine if a solution for the size of the POI has converged. The final POIs are then processed in a simulation that can use multiple payloads (e.g., cryptographic data) over the entire set of final POIs, and the resulting data set can be used to create the model.
    Type: Grant
    Filed: August 13, 2021
    Date of Patent: January 23, 2024
    Assignee: ANSYS, INC.
    Inventors: Deqi Zhu, Hua Chen, Jimin Wen, Lang Lin, Norman Chang, Dinesh Selvakumaran, Gang Ni
  • Publication number: 20230367885
    Abstract: Techniques for security vulnerability assessment of security-sensitive circuit designs are described. A placement of security-sensitive components of a design may be based on constraints related to how far apart a relevant set of security-sensitive components are allowed without consuming too much power and how to optimize the placement to minimize electromagnetic side-channel leakage or other security vulnerabilities. In one embodiment, a method may receive data that includes a representation of a design of an IC and may identify security-sensitive components of the design from the data. The method may determine a placement for the design based on constraints on a level of security vulnerabilities of the security-sensitive components and may perform a power simulation for the design based on the placement. The method may generate an assessment of the level of security vulnerabilities of the security-sensitive components based on the power simulation to adjust the placement for the design.
    Type: Application
    Filed: December 14, 2022
    Publication date: November 16, 2023
    Inventors: Lang LIN, Kayhan KUCUKCAKAR, Jimin WEN, Norman CHANG, Preeti GUPTA, Hua CHEN
  • Publication number: 20230323666
    Abstract: A reinforced recycled block/aggregate concrete precast column and a construction method are provided. The reinforced recycled block/aggregate concrete precast column includes several first one-bar hoops, vertical reinforcement bars, several second one-bar hoops, a flexible hinge area, and recycled block/aggregate concrete; the first one-bar hoops and second one-bar hoops are each provided with an anchor end; the first one-bar hoops and second one-bar hoops are disposed in the flexible hinge area, and only the second one-bar hoops are disposed outside the flexible hinge area; the outer edge of each first one-bar hoop is flush with the outer surface of the reinforced recycled block/aggregate concrete precast column; and the interior of the reinforced recycled block/aggregate concrete precast column is filled with the recycled block/aggregate concrete, thereby greatly increasing the recycling rate of engineering waste, reducing shedding of a concrete protective layer in the flexible hinge area of the column.
    Type: Application
    Filed: December 31, 2020
    Publication date: October 12, 2023
    Applicant: SOUTH CHINA UNIVERSITY OF TECHNOLOGY
    Inventors: Bo WU, Lang LIN
  • Publication number: 20230119879
    Abstract: A monitoring system includes a doorbell unit that includes a camera and a display and that is configured to receive a request to access the property. The monitoring system includes a monitor control unit that is configured to determine an authentication protocol for determining whether to grant the visitor access to the property. The monitor control unit generates a first image and transmits authentication data to a computing device. The monitor control unit provides the first image and instructions to output the first image on the display of the doorbell unit. The monitor control unit receives a second image captured by the camera of the doorbell unit. The monitor control unit determines whether the second image includes a representation of data that is based on processing the first image in combination with the authentication data. The monitor control unit grants or denies the visitor access to the property.
    Type: Application
    Filed: December 20, 2022
    Publication date: April 20, 2023
    Inventor: Lang Lin
  • Patent number: 11599633
    Abstract: Methods, machine readable media and systems for performing side channel analysis are described. In one embodiment, a method can determine, from a gate level representation of a circuit in a layout on a die of an IC, a first set of paths through the circuit that process security related data during operation of the circuit, the circuit including a second set of paths that do not process security related data; and the method can further determine, in a simulation of power consumption in the first set of paths but not the second set of paths, power consumption values in the first set of paths to determine potential security leakage of the security related data in the circuit. The method can further determine, from the power consumption values, positions in the layout for inserting virtual probes on the die for use in measuring security metrics that indicate potential leakage of the security related data. The insertion of the virtual probes is relative to the actual simulated layout of the die.
    Type: Grant
    Filed: February 12, 2021
    Date of Patent: March 7, 2023
    Assignee: ANSYS, INC.
    Inventors: Lang Lin, Norman Chang, Joao Geada, Deqi Zhu, Dinesh Kumar Selvakumaran, Nitin Kumar Pundir
  • Patent number: 11599437
    Abstract: A mechanism is provided for automatically detecting, diagnosing, transporting, and repairing devices having failed during burn-in testing. Embodiments provide a system that monitors devices undergoing burn-in testing and detecting when a device or a component within a device fails the burn-in test. Embodiments can then alert burn-in-rack monitor personnel of the device failure. Embodiments can concurrently determine the nature of the failure applying a machine learning-based prediction model against log files associated with the failed device. The diagnosis along with a recommended repair strategy can be provided to the repair center as an aid in accelerating the repair process. In addition, the diagnosis can be used to order parts for the repair from a parts depot. In this manner, embodiments can reduce the time for detection, diagnosis, and repair of the failed device.
    Type: Grant
    Filed: February 22, 2021
    Date of Patent: March 7, 2023
    Assignee: Dell Products L.P.
    Inventors: Yun Xi, Yu Huang Lin, Meng Meng Jiang, Wen Sen Que, Hua Shan Liang, Mu Shou Lan, Zhi Jian Weng, Lang Lin
  • Patent number: 11539922
    Abstract: A monitoring system includes a doorbell unit that includes a camera and a display and that is configured to receive a request to access the property. The monitoring system includes a monitor control unit that is configured to determine an authentication protocol for determining whether to grant the visitor access to the property. The monitor control unit generates a first image and transmits authentication data to a computing device. The monitor control unit provides the first image and instructions to output the first image on the display of the doorbell unit. The monitor control unit receives a second image captured by the camera of the doorbell unit. The monitor control unit determines whether the second image includes a representation of data that is based on processing the first image in combination with the authentication data. The monitor control unit grants or denies the visitor access to the property.
    Type: Grant
    Filed: September 17, 2021
    Date of Patent: December 27, 2022
    Assignee: Alarm.com Incorporated
    Inventor: Lang Lin
  • Patent number: 11520960
    Abstract: Methods, machine readable media and systems for performing side channel analysis are described. In one embodiment, a method, performed on a data processing system, can receive input data that contains an RTL representation of a design of a circuit and then determine, from the input data, a set of registers that store security related data during operation of the circuit, wherein the set of registers are a subset of all of the registers in the design. The method then determines, in a simulation of power consumption of the set of registers in the RTL representation, security metrics that indicate a level of potential leakage of security related data such as secret or private cryptographic keys.
    Type: Grant
    Filed: March 15, 2021
    Date of Patent: December 6, 2022
    Assignee: ANSYS, INC.
    Inventors: Dinesh Kumar Selvakumaran, Allen Rubin Baker, Norman Chang, Lang Lin, Deqi Zhu, Arti Dwivedi, Preeti Gupta, Joao Geada
  • Patent number: 11301608
    Abstract: Methods, machine readable media and systems for simulating the leakage of sensitive data in an integrated circuit, such as cryptographic data or keys, are described. In one embodiment, a method can include the following operations: performing a first dynamic voltage drop (DVD) simulation on a plurality of locations, distributed across an integrated circuit (IC), based on a physical model that specifies physical layout of components on the IC, the IC storing sensitive data in locations of the layout; performing an IC level side channel correlation analysis between each of the locations and the sensitive data based on the results of the first DVD simulation; and selecting, based upon the IC level side channel correlation analysis, a subset of the locations for further simulations to simulate leakage of the sensitive data. Other methods, media and systems are disclosed.
    Type: Grant
    Filed: September 4, 2020
    Date of Patent: April 12, 2022
    Assignee: ANSYS, INC.
    Inventors: Lang Lin, Dinesh Kumar Selvakumaran, Norman Chang, Calvin Chow, Deqi Zhu
  • Publication number: 20220060327
    Abstract: Methods, machine readable media and systems for near-field electromagnetic simulation for side-channel emission analysis of an integrated circuit (IC) are described. In one embodiment, a method can include the following operations: simulating EM field strengths for a plurality of grid partitions of a circuit area of the IC based on a cryptographic work load applied to a model of the IC; identifying one or more of the grid partitions as a security sensitive region for the IC based on the EM field strengths, wherein one or more grid partitions outside of the security sensitive region are identified as non-security sensitive regions for the IC; and simulating EM fields for the IC to perform the EM side-channel emission analysis, wherein contributions of the EM fields from the non-security sensitive regions for the EM side-channel emission analysis are based on a linear superposition of wire currents in the non-security sensitive regions of the IC.
    Type: Application
    Filed: September 22, 2020
    Publication date: February 24, 2022
    Inventors: Deqi Zhu, Norman Chang, Lang Lin, Dinesh Kumar Selvakumaran, Yu Lu
  • Publication number: 20220006980
    Abstract: A monitoring system includes a doorbell unit that includes a camera and a display and that is configured to receive a request to access the property. The monitoring system includes a monitor control unit that is configured to determine an authentication protocol for determining whether to grant the visitor access to the property. The monitor control unit generates a first image and transmits authentication data to a computing device. The monitor control unit provides the first image and instructions to output the first image on the display of the doorbell unit. The monitor control unit receives a second image captured by the camera of the doorbell unit. The monitor control unit determines whether the second image includes a representation of data that is based on processing the first image in combination with the authentication data. The monitor control unit grants or denies the visitor access to the property.
    Type: Application
    Filed: September 17, 2021
    Publication date: January 6, 2022
    Inventor: Lang Lin