Apple Inc.

Christopher W Chaney

Chaohao Wang

Paolo Sacchetto

Jean-Pierre Simon Guillou

Patrick Y Law

Amit K Vyas

Arthur L Spence

Abhinav Pathak

Mohammad Ali Jangda

Yifan Zhang

Christopher Edward Glazowski

Albert S Liu

Paul M Thompson

Conor J O'Reilly

Rohit Mundra

Roberto Alvarez

Shashi K Dua

Udaykumar R Raval

Vladislav Sahnovich

Norman Jay Rohrer

Cyril De La Cropte De Chanterac

John Gregory Dorsey

Prajakta S Karandikar

Han Ming Ong

Circuits, methods, and apparatus that may estimate the power being consumed by an OLED display screen of an electronic device, may provide further information about that power usage, may modify or change functions performed by the electronic device based on that power usage, and may inform an application's developer about the amount of power being used by the electronic device while the electronic device is running the application. One example may estimate the power being used by an OLED display screen of an electronic device by determining the content of images being displayed during a duration. The estimated power may then be presented to a user. The estimated power may be used in decisions to modify or change parameters of the screen or other device components.

Graphically providing OLED display power modeling

OLED display power modeling

Embodiments provide for a computer implemented method comprising sampling one or more power and performance metrics of a processor; determining an energy cost per instruction based on the one or more power and performance metrics; determining an efficiency metric based on the energy cost per instruction; computing an efficiency control error based on a difference between a current efficiency metric and a target efficiency metric; setting an efficiency control effort based on the efficiency control error; determining a performance control effort, the performance control effort determined by a performance controller for the processor; and adjusting the performance control effort based on the efficiency control effort, wherein adjusting the performance control effort reduces power consumption of the processor.

Processor unit efficiency control

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Saratoga, CA, United States of America

Christopher W Chaney