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Keyboard for Portable Personal Computer

IP.com Disclosure Number: IPCOM000039160D
Original Publication Date: 1987-Apr-01
Included in the Prior Art Database: 2005-Feb-01

Publishing Venue

IBM

Related People

Authors:
Demke, KR Lubart, ND Schwartz, RC [+details]

Abstract

A new keyboard is shown above which provides (1) total personal computer (PC) compatibility, (2) small footprint, and (3) excellent usability. A totally portable PC requires total keyboard compatibility with earlier PC models, such as PC1. This means access to all PC1 scan codes (or their equivalent). The PC1 keyboard itself is not acceptable because of the need for a small footprint. Total PC compatibility with a small footprint is achieved by the following: Some of the PC keyboard scan codes are mapped onto a new smaller area key top. This significantly reduced the total area of the keyboard. These represent 20 of the total keys. The smaller keys are used for functions that are not normally touch typed (i.e.