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Browse Prior Art Database

An ability to automatically control display settings based on the ambient light.

IP.com Disclosure Number: IPCOM000020377D
Original Publication Date: 2003-Nov-18
Included in the Prior Art Database: 2003-Nov-18
Document File: 2 page(s) / 55K

Publishing Venue

IBM

Abstract

Disclosed is a method of controlling display settings such as brightness, contrast, and individual color saturation based on the quality of ambient lighting. The solution uses a photosensitive element to read ambient light properties and automatically adjusts displays settings in order to obtain optimum image quality.

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An ability to automatically control display settings based on the ambient light.

  The solution applies to any type of color display (ex: LCD, CRT, etc...). Some of the products that can benefit from the invention are: cell phones, in-car displays, computer displays etc.

    The solution proposes to use a photosensitive element in the display's housing to measure ambient light properties. Some of the measured light properties are light intensity, white balance etc..The display settings such as brightness, contrast, individual color saturation are automatically adjusted in response to the changes in the ambient lighting without user intervention. The proposed solution allows displays to show an optimal quality image regardless of the surrounding light. The user is no longer required to adjust the brightness settings every time he/she moves from a dark lit room to the bright outdoors. The solution can also be used to adjust display colors to the color of the surrounding ambient light (ex: if surrounding light is red then the screen color can also change to be red) The invention is specifically useful in environments where light changes frequently. The additional benefit is an extended battery life in portable devices.

    The invention uses photosensitive element to measure the ambient light. The photosensitive element breaks the light into three basic components red, green and blue and measures each of the individually.

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