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Method of Controlling Backlights in a Phone with a Keypad and a Touchscreen Display Disclosure Number: IPCOM000020681D
Original Publication Date: 2003-Dec-08
Included in the Prior Art Database: 2003-Dec-08

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Robert Johnson


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.