Browse Prior Art Database

Method for Display Extension on Limited-Function Laptop Computers

IP.com Disclosure Number: IPCOM000103342D
Original Publication Date: 2005-Mar-17
Included in the Prior Art Database: 2005-Mar-17
Document File: 2 page(s) / 46K

Publishing Venue

IBM

Abstract

This disclosure outlines a method for extending a computer display to neighboring laptop displays to extend the life and utility of old laptop displays.

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 48% of the total text.

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Method for Display Extension on Limited-Function Laptop Computers

Computer systems today allow a user to run many applications on a computer at the same time. Many times, it is desirable for the user to view multiple applications at one time in a full screen. When a laptop computer reaches end of life of about three years, the computers are recycled or destroyed and replaced with the latest technology. In most cases, the display on the laptop can still be used as a display panel for a secondary display to address the scenarios mentioned above. This method defines how a laptop display can be used as a secondary display by only powering on the laptop display and enabling bi-directional support on the existing VGA connector. It also describes ways to extend a computer display to a neighboring laptop computer by only powering on the laptop display and connecting it with a standard 9pin VGA cable. This method defines a new hardware switch to be added to each laptop computer. Using the standard power supply for the laptop, the user will now have a toggle switch to power on the entire laptop or only the display of the laptop. This method defines a new hardware function for the 15 pin VGA connection on the laptop. Today, the VGA connections on laptops have only outbound capabilities and allow a second display or overhead projector to be connected to that output. This method adds bidirectional support to that 15 pin VGA adapter on the laptop. This allows the plug to accept input display when only the display is powered, so the laptop display itself can be used as a secondary display in addition to the standard capability of being a primary display. This enables an old laptop display to be used after the laptop has reached end of life, where a display can be used for years to display content but which would otherwise have been recycled or discarded.

This method defines a plug and play interface for future laptop displays and a laptop display docking station. The plug and play interface is defined as follows: Each Laptop will have a hinged platform that is permanently connected to the base of the laptop; On top of this hinged platform will be a 9pin VGA connection and a power connection; Each display with have the 9pin VGA connection and power connection at the bottom so it may be attached to the hinged platform; Each manufacturer may secure the display per their specifications. The docking station is defined as follows: Similar to the hinged platform on the laptop, the top of the docking station will have a 9pin VGA connection and a power connection; The docking station is powered with the standard laptop power adapter; Each manufacturer may secure the display per their specifications. This enables an old laptop display to be removed from the base of the laptop and used like a flat panel display is used today. It can be mounted on an adjustable arm, table stand or wall mount.

A desktop computer may have one display device connected to it. I...