Browse Prior Art Database

Touchpad Cable Function

IP.com Disclosure Number: IPCOM000060020D
Original Publication Date: 1986-Feb-01
Included in the Prior Art Database: 2005-Mar-08
Document File: 2 page(s) / 44K

Publishing Venue

IBM

Related People

Connors, BJ: AUTHOR [+2]

Abstract

This article describes a touchpad cable function which uses only one cable for either remote or cable modes. The cable carries both power and signal for either a touchpad or receiver. Existing touchpads do not allow for the infrared (IR) receiver to receive its power through the cable when it is in the touchpad-to- system communication path. Thus, different cables are needed for the touchpad and receiver units. The arrangement disclosed herein allows connection of either the touchpad or receiver unit to a personal computer (PC) system. This permits users to position their system or receiver units arbitrarily relative to the touchpad. The drawing illustrates the present touchpad cable function in both the IR and cable modes.

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Touchpad Cable Function

This article describes a touchpad cable function which uses only one cable for either remote or cable modes. The cable carries both power and signal for either a touchpad or receiver. Existing touchpads do not allow for the infrared (IR) receiver to receive its power through the cable when it is in the touchpad-to- system communication path. Thus, different cables are needed for the touchpad and receiver units. The arrangement disclosed herein allows connection of either the touchpad or receiver unit to a personal computer (PC) system. This permits users to position their system or receiver units arbitrarily relative to the touchpad. The drawing illustrates the present touchpad cable function in both the IR and cable modes. IR mode refers to touchpad unit to IR receiver unit link through IR transmission with the IR receiver linked to the PC adapter card by cable. Cable mode refers to touchpad unit to PC adapter card link through a cable. In the IR mode, the IR receiver is separate from the system unit. It can be placed up to ten feet away from the system. This feature enables the system unit to be placed in a location out of the way, while the receiver is placed in a convenient location to obtain input from the touchpad. The signal from the receiver is inputted to the system unit. The remote mode enables the user to operate the touchpad in a casual environment with no cables. In the cable mode, the PC adapter card is plugged into a system...