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Method of Controlling Backlights in a Phone with a Keypad and a Touchscreen Display

IP.com Disclosure Number: IPCOM000020681D
Original Publication Date: 2003-Dec-08
Included in the Prior Art Database: 2003-Dec-08

Publishing Venue

Motorola

Related People

Authors:
Robert Johnson

Abstract

This paper describes a method of controlling the backlighting in a phone which has both a keypad and a touchscreen type display. In applications where input can be done by either method or in applications where input can only be done by one method or another, this methodology allows some backlighting to be turned off. Thus significant power reduction can be achieved in an automatic fashion.