Browse Prior Art Database

Optical Keyboard

IP.com Disclosure Number: IPCOM000051996D
Original Publication Date: 1981-Apr-01
Included in the Prior Art Database: 2005-Feb-11

Publishing Venue

IBM

Related People

Authors:
Duncan, WS Higdon, JM [+details]

Abstract

An optical keyboard includes a molded plastic block having arrays of intersecting light channels which are selectively blocked upon key actuation. A scanned light source is used in conjunction with a single detector.