Windows 7 Brightness Control for Integrated Displays

Updated: January 9, 2009

File name: BrightnessCtrl.docx
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This paper provides information about integrated display brightness control for the Windows family of operating systems. It provides guidelines for system manufacturers and firmware developers to expose brightness control infrastructure to Windows. The new brightness control user experiences for Windows 7 are discussed. Additionally, this paper provides power policy configuration information, including new policies for the adaptive display brightness feature and information on how to observe brightness control changes by using the PwrTest utility.

This information applies to the Windows 7 operating system.

Included in this paper:

• Brightness Control User Experiences

• Brightness Control Platform Infrastructure

• Brightness Control Policies and Actions

• Best Practices for Brightness Control Policy Configuration

• Best Practices for Software Developers

• Integration with Ambient Light Sensor Devices

• Validation of Platform Brightness Control