Browse Prior Art Database

Variable Keyboard Personality

IP.com Disclosure Number: IPCOM000067880D
Original Publication Date: 1979-Oct-01
Included in the Prior Art Database: 2005-Feb-20

Publishing Venue

IBM

Related People

Authors:
Dobson, DR Hooker, RW Proctor, MM Zbrozek, B [+details]

Abstract

Typewriters utilizing changable typefonts require changeable keyboard personalities since a particular key location may specify a character such as a "M" requiring high impact velocity, while the same key position when utilizing a different font could specify a character requiring low impact velocity. When utilizing a microprocessor to specify character identification information (e.g., print element location and print velocity) in response to keybutton depression, it is typical to utilize a read-only memory unit in conjunction with the processor to provide the character identification information. Since a unique part must be provided for each keyboard variation, the number of unique parts for all possible keyboard variations is quite large.