Patents by Inventor Xiao William CHENG

Xiao William CHENG 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).

  • Granular access control for secure memory
    Patent number: 11847069
    Abstract: A secure processing system includes a memory having a secure partition and a non-secure partition, a neural network processing unit (NPU) configured to initiate transactions with the memory, and a memory protection unit (MPU) configured to filter the transactions. Each of the transactions includes at least an address of the memory to be accessed, one of a plurality of first master identifiers (IDs) associated with the NPU, and security information indicating whether the NPU is in a secure state or a non-secure state when the transaction is initiated. The MPU is to selectively deny access to the secure partition of the memory based at least in part on the memory address, the first master ID, and the security information associated with each of the transactions.
    Type: Grant
    Filed: May 27, 2022
    Date of Patent: December 19, 2023
    Assignee: Synaptics Incorporated
    Inventors: Pontus Evert Lidman, Xiao William Cheng, Hongjie Guan, Jingliang Li
  • GRANULAR ACCESS CONTROL FOR SECURE MEMORY
    Publication number: 20220283958
    Abstract: A secure processing system includes a memory having a secure partition and a non-secure partition, a neural network processing unit (NPU) configured to initiate transactions with the memory, and a memory protection unit (MPU) configured to filter the transactions. Each of the transactions includes at least an address of the memory to be accessed, one of a plurality of first master identifiers (IDs) associated with the NPU, and security information indicating whether the NPU is in a secure state or a non-secure state when the transaction is initiated. The MPU is to selectively deny access to the secure partition of the memory based at least in part on the memory address, the first master ID, and the security information associated with each of the transactions.
    Type: Application
    Filed: May 27, 2022
    Publication date: September 8, 2022
    Inventors: Pontus Evert LIDMAN, Xiao William CHENG, Hongjie GUAN, Jingliang LI
  • Granular access control for secure memory
    Patent number: 11372780
    Abstract: A secure processing system includes a memory having a secure partition and a non-secure partition, a neural network processing unit (NPU) configured to initiate transactions with the memory, and a memory protection unit (MPU) configured to filter the transactions. Each of the transactions includes at least an address of the memory to be accessed, one of a plurality of first master identifiers (IDs) associated with the NPU, and security information indicating whether the NPU is in a secure state or a non-secure state when the transaction is initiated. The MPU is to selectively deny access to the secure partition of the memory based at least in part on the memory address, the first master ID, and the security information associated with each of the transactions.
    Type: Grant
    Filed: May 30, 2019
    Date of Patent: June 28, 2022
    Assignee: SYNAPTICS INCORPORATED
    Inventors: Pontus Evert Lidman, Xiao William Cheng, Hongjie Guan, Jingliang Li
  • GRANULAR ACCESS CONTROL FOR SECURE MEMORY
    Publication number: 20200379923
    Abstract: A secure processing system includes a memory having a secure partition and a non-secure partition, a neural network processing unit (NPU) configured to initiate transactions with the memory, and a memory protection unit (MPU) configured to filter the transactions. Each of the transactions includes at least an address of the memory to be accessed, one of a plurality of first master identifiers (IDs) associated with the NPU, and security information indicating whether the NPU is in a secure state or a non-secure state when the transaction is initiated. The MPU is to selectively deny access to the secure partition of the memory based at least in part on the memory address, the first master ID, and the security information associated with each of the transactions.
    Type: Application
    Filed: May 30, 2019
    Publication date: December 3, 2020
    Inventors: Pontus Evert LIDMAN, Xiao William CHENG, Hongjie GUAN, Jingliang LI