Integrating Ambient Light Sensors in Windows 7

Updated: July 2, 2010

File name: ambient-light-sensors.docx
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This paper provides information about new ambient light sensor (ALS) features in the Windows 7 operating system. It provides guidelines for hardware manufacturers and original equipment manufacturers (OEMs) to integrate ALS hardware with computers that use the adaptive brightness feature and with applications that use light sensor data.

This information applies to all editions of the Windows 7 operating system, except Windows 7 Starter edition.

What's new in this white paper:

• Added ALS support diagram

• Updated part selection criteria and ACPI support

• Changed the paper’s title slightly for standard usage of “Windows 7”