Browse Prior Art Database

USER SELECTABLE, COMBINATION WITH RTC PRE-USER-PROGRAMMABLE AUTOMATIC LCD LIGHTING SYSTEM

IP.com Disclosure Number: IPCOM000006023D
Original Publication Date: 1990-Oct-01
Included in the Prior Art Database: 2001-Nov-27
Document File: 2 page(s) / 66K

Publishing Venue

Motorola

Related People

Authors:
Jeff King Silvia Vitari

Abstract

The ongoing issue of supplying the pager user with an automatic backlighting feature is paramount. When ambient lighting conditions are not adequate for typical LCD reflective reading conditions the user is forced to activate the lighting option. This of course requires additional steps by the user as wall as a vary keen feeling of exactly where the lighting control actually is, since there may be no ambient lighting at all. The bottom line is: Why should the user be required to activate the lighting during known times of darkness? One method of acwmplishing this task is to preset the lighting option using the on board RTC (REAL TIME CLOCK). In short, the RTC is preprogrammed to turn the light on during certain hours when the lighting conditions are likely to be marginal, in other words, at night.