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[Sensors] Ambient Light Sensor use cases

From: Tran, Dzung D <dzung.d.tran@intel.com>
Date: Fri, 22 Jul 2011 22:58:09 +0000
To: "public-device-apis@w3.org" <public-device-apis@w3.org>
Message-ID: <84BCA539DD96614691177EDA3CE4FF051372C780@ORSMSX101.amr.corp.intel.com>
These were in the original System Info spec, before we removed them because the WG didn't think that we need to have use cases in the spec. I just took a snap shot from the old spec, so these might not be what we want.

Ambient Light Sensor


Incoming Call at the Theater

Before the show began, the user has placed her cell phone in vibrate/silent mode to be polite to the other audience members. However, she needs to screen calls as they come because if the call is from the emergency room, she needs to leave the performance and take the call. As calls come in, the device senses that it is in a dark location, turns the backlight down as low as possible, and adjusts the color scheme to avoid bright colors. These adjustments make it so that the user eyes don't need to adjust; they also make the cell phone's LCD less distracting to other audience members. 

Direct Sunlight or outdoor Use

It's almost spring in the Northern Hemisphere, and the university lawns are packed with wishful thinkers trying to focus on homework while enjoying the warmth. The ambient light sensor detects the sun is shining and the application uses a color scheme with more contrast so that the users can see clearer in daylight. 

Photo Editing Application adjusts display colors based on the color of the ambient light

The user has just taken some photos and wants to upload them to a content sharing site on the internet. He navigates to the content sharing site's photo touch-up page, which uses the ambient light sensor to detect that the user is in a space with fluorescent lights and adjusts the users colors so that the picture colors will look correct on the majority of user's displays. 

Dzung Tran 
Received on Friday, 22 July 2011 22:58:39 UTC

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