Browse Prior Art Database

Method to Inhibit Power Saving Modes on a Mobile Computer while Driving an External Display

IP.com Disclosure Number: IPCOM000015508D
Original Publication Date: 2002-Jan-16
Included in the Prior Art Database: 2003-Jun-20
Document File: 2 page(s) / 40K

Publishing Venue

IBM

Abstract

Method to Inhibit Power Saving Modes on a Mobile Computer while Driving an External Display

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Method to Inhibit Power Saving Modes on a Mobile Computer while Driving an

External Display

This publication describes a method to inhibit a mobile computer from entering a lower power state (that would disrupt the image being displayed) when the computer is driving an external display. Mobile computers today have external display interfaces so that they can drive external monitors or projectors. These external projectors are used to display the screen image which is typically a presentation being made in front of an audience or in a meeting. When the computer is running off of its battery it is customarily programmed to enter a low power state after some time of inactivity. This has the effect of disrupting or turning off the image being displayed. This can happen frequently since the presenter is rarely interacting with the computer (which resets the timers that trigger this) while making the presentation. This can be disruptive to the presenter and the audience. Using a mobile computer that uses this method to disable the turning off of the display will allow for more effective and pleasant presentations.

The method described below solves the problem of a mobile computer that is driving an external display unwantingly turning off the display to go into a low power mode. Modern mobile computers have software utilities that are used to activate and de-activate the external display port. Once this port is enabled it transmits the exact same image that is being displayed (or would be displayed) on the built-in display. If the computer is running off the battery (as it may be in many cases when being used to make a presentation) it is programmed to enter a lower power state (and hence turn off the display) after some period of inactivity. This is done to conserve the battery. If the computer is being used to make a presentation this can be disrupt...