Patents by Inventor Ateesh Deepankar DE

Ateesh Deepankar DE 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).

  • On-die voltage-frequency security monitor
    Patent number: 11880454
    Abstract: A method to prevent a malicious attack on CPU subsystem (CPUSS) hardware is described. The method includes auto-calibrating tunable delay elements of a dynamic variation monitor (DVM) using an auto-calibration value computed in response to each detected change of a clock frequency (Fclk)/supply voltage (Vdd) of the CPUSS hardware. The method also includes comparing the auto-calibration value with a threshold reference calibration value to determine whether the malicious attack is detected. The method further includes forcing a safe clock frequency (Fclk)/safe supply voltage (Vdd) to the CPUSS hardware when the malicious attack is detected.
    Type: Grant
    Filed: May 14, 2020
    Date of Patent: January 23, 2024
    Assignee: QUALCOMM Incorporated
    Inventors: Bharat Kumar Rangarajan, Dipti Ranjan Pal, Keith Alan Bowman, Srinivas Turaga, Ateesh Deepankar De, Shih-Hsin Jason Hu, Chandan Agarwalla
  • ON-DIE VOLTAGE-FREQUENCY SECURITY MONITOR
    Publication number: 20210357502
    Abstract: A method to prevent a malicious attack on CPU subsystem (CPUSS) hardware is described. The method includes auto-calibrating tunable delay elements of a dynamic variation monitor (DVM) using an auto-calibration value computed in response to each detected change of a clock frequency (Fclk)/supply voltage (Vdd) of the CPUSS hardware. The method also includes comparing the auto-calibration value with a threshold reference calibration value to determine whether the malicious attack is detected. The method further includes forcing a safe clock frequency (Fclk)/safe supply voltage (Vdd) to the CPUSS hardware when the malicious attack is detected.
    Type: Application
    Filed: May 14, 2020
    Publication date: November 18, 2021
    Inventors: Bharat Kumar RANGARAJAN, Dipti Ranjan PAL, Keith Alan BOWMAN, Srinivas TURAGA, Ateesh Deepankar DE, Shih-Hsin Jason HU, Chandan AGARWALLA