公开(公告)号：US20170090909A1

公开(公告)日：2017-03-30

申请号：US14866682

申请日：2015-09-25

Applicant: QUALCOMM Incorporated

Inventor： Xu GUO ,  Ron KEIDAR ,  Rodney ZIOLKOWSKI ,  Mahesh Dandapani IYER ,  Yau CHU

IPC: G06F9/445 ,  G06F21/57

CPC classification number: G06F8/66 ,  G06F21/57 ,  G06F21/572 ,  G06F21/575 ,  G06F2221/033

Abstract: Methods, apparatus, and computer program products for securely writing patch code to a memory of a system-on-chip (SoC) are described. An example of a method for securely writing patch code to the memory of the SoC includes determining an authentication status of a patch code image, if the authentication status of the patch code image is authenticated, then writing the patch code from the patch code image into a one-time programmable (OTP) memory and generating a system reset signal, and if the authentication status of the patch code image is unauthenticated, then booting the SoC without writing the patch code from the patch code image into the OTP memory.

公开(公告)号：US20240053409A1

公开(公告)日：2024-02-15

申请号：US18446348

申请日：2023-08-08

Applicant: QUALCOMM Incorporated

Inventor： Michael Aaron ZACHARKO ,  Derrick Chu LIN ,  Yau CHU

IPC: G01R31/392 ,  G01R31/389 ,  G01R31/367 ,  G01R31/3835 ,  H04B1/40

CPC classification number: G01R31/392 ,  G01R31/389 ,  G01R31/367 ,  G01R31/3835 ,  H04B1/40

Abstract: Techniques and apparatus for determining intrinsic resistance and/or battery life of a coin cell battery based on the recovery time of the battery voltage after a significant current draw event. Once the intrinsic resistance and/or battery life is known, a device powered by the coin cell battery can take action to lengthen the battery's useful lifetime. One example technique of operating a device powered by a battery generally includes performing an operation with a relatively high current draw from the battery compared to other operations of the device, determining a recovery time of a voltage of the battery after the operation, and estimating a position of the battery in a lifetime of the battery based on the recovery time.