公开(公告)号：US20210349134A1

公开(公告)日：2021-11-11

申请号：US17109031

申请日：2020-12-01

Applicant: Intel Corporation

Inventor： Sriram Ranganathan ,  Naveen G ,  Pannerkumar Rajagopal ,  Govindaraj Gettimalli ,  Javahar Ragothaman

IPC: G01R21/133 ,  G06F1/3246 ,  G06F1/3234

Abstract: A Power Management Controller (PMC) which manages power states of a platform, informs a power accumulator device to start measuring the platform power during entry into the low power state (e.g., S0iX). The power accumulator device starts measuring the power until a stop message comes from the PMC. The PMC on detection of any wake event initiates a stop message to the power accumulator device. Once an operating system (OS) context is restored, software can read the measured data from the power accumulator device. The measured data is accessible to a host software using standard software application programming interface (API) and can be used to influence the power policies of the system.

公开(公告)号：US11422173B2

公开(公告)日：2022-08-23

申请号：US17109031

申请日：2020-12-01

Applicant: Intel Corporation

Inventor： Sriram Ranganathan ,  Naveen G ,  Pannerkumar Rajagopal ,  Govindaraj Gettimalli ,  Javahar Ragothaman

IPC: G01R21/133 ,  G06F1/32 ,  G06F1/3234 ,  G06F1/3246

Abstract: A Power Management Controller (PMC) which manages power states of a platform, informs a power accumulator device to start measuring the platform power during entry into the low power state (e.g., S0iX). The power accumulator device starts measuring the power until a stop message comes from the PMC. The PMC on detection of any wake event initiates a stop message to the power accumulator device. Once an operating system (OS) context is restored, software can read the measured data from the power accumulator device. The measured data is accessible to a host software using standard software application programming interface (API) and can be used to influence the power policies of the system.