公开(公告)号：US20130254563A1

公开(公告)日：2013-09-26

申请号：US13890694

申请日：2013-05-09

Applicant: Apple Inc.

Inventor： Michael Culbert ,  Keith Alan Cox ,  Brian Howard ,  Josh De Cesare ,  Richard Charles Williams ,  Dave Robbins Falkenburg ,  Daisie Iris Huang ,  Dave Radcliffe

IPC: G06F1/26

CPC classification number: G06F1/206 ,  G05D23/1934 ,  G05D23/24 ,  G06F1/10 ,  G06F1/20 ,  G06F1/26 ,  G06F1/3203 ,  G06F1/324 ,  G06F1/329 ,  G06F1/3296 ,  Y02D10/126 ,  Y02D10/172 ,  Y10S706/90

Abstract: Methods and apparatuses to manage working states of a data processing system. At least one embodiment of the present invention includes a data processing system with one or more sensors (e.g., physical sensors such as tachometer and thermistors, and logical sensors such as CPU load) for fine grain control of one or more components (e.g., processor, fan, hard drive, optical drive) of the system for working conditions that balance various goals (e.g., user preferences, performance, power consumption, thermal constraints, acoustic noise). In one example, the clock frequency and core voltage for a processor are actively managed to balance performance and power consumption (heat generation) without a significant latency. In one example, the speed of a cooling fan is actively managed to balance cooling effort and noise (and/or power consumption).