ALRPoints (Standard 8 Module Reference)

7/8/2014

Review the applicable Feature modules and any examples for the ALRPoints setting in Windows Embedded 8 Standard (Standard 8).

This setting contains a string that specifies the ambient light response (ALR) curve data.

The curve is defined by the following, as specified in 8-digit, hexadecimal numbers:

  • The percentage of change in brightness based on the display brightness baseline. For example, 00000096 = 150 percent of the current brightness level.
  • The illuminance (lux) detected by the ambient light sensor. For example, 000003E8 = 1000 lux.

For information on generating a ALR curve data, see Integrating Ambient Light Sensors in Windows 7 on MSDN.

The following table shows the modules that you can apply this setting to. In Image Configuration Editor (ICE), you can follow the corresponding path to set this setting for a module.

Module

Path

Proximity, Sensor and Location

Features/Natural User Interface/Proximity, Sensor and Location/AdaptiveBrightness/ALRPoints

The following XML example shows how to set the ALR curve data as follows:

  • Adjust the screen to 10 percent of the baseline brightness level when the ambient light sensor detects 10 lux.
  • Adjust the screen to 40 percent of the baseline brightness level when the ambient light sensor detects 40 lux.
  • Adjust the screen to 80 percent of the baseline brightness level when the ambient light sensor detects 68 lux.
<ALRPoints>000000000a0000000a00000028000000280000005000000044</ALRPoints>
<DisplayResponseInterval>60000</DisplayResponseInterval>
<IlluminanceChangeSensitivity>20</IlluminanceChangeSensitivity>

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