Browse Prior Art Database

Light Beam Matrix Input Terminal

IP.com Disclosure Number: IPCOM000094387D
Original Publication Date: 1966-Oct-01
Included in the Prior Art Database: 2005-Mar-06
Document File: 2 page(s) / 86K

Publishing Venue

IBM

Related People

Betts, P: AUTHOR [+4]

Abstract

This display and computer input device consists of a rectangular matrix of light beams 10 and associated photosensitive devices 12 overlaying document 14. Mount 16 contains a pair of light sources 18 at right angles to each other. Beams 10 are formed by holes in frame 20 and image on optical fibers 12 opposite sources 18. Thus, a light beam matrix is formed. The frame assembly is spaced slightly above document 14 by thin, clear screen 22 having response holes 24 at each intersection of beams 10. When probe 26 or the finger is placed in a hole of screen 22, intersecting beams are interrupted. Fibers 12 are merged to moving belt 28 having light detectors 32 at its underside. Fibers 12 are so arranged that slots 30 scan them serially. Document 14 can be one of a plurality on a roll.

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Light Beam Matrix Input Terminal

This display and computer input device consists of a rectangular matrix of light beams 10 and associated photosensitive devices 12 overlaying document 14. Mount 16 contains a pair of light sources 18 at right angles to each other. Beams 10 are formed by holes in frame 20 and image on optical fibers 12 opposite sources 18. Thus, a light beam matrix is formed. The frame assembly is spaced slightly above document 14 by thin, clear screen 22 having response holes 24 at each intersection of beams 10. When probe 26 or the finger is placed in a hole of screen 22, intersecting beams are interrupted. Fibers 12 are merged to moving belt 28 having light detectors 32 at its underside. Fibers 12 are so arranged that slots 30 scan them serially. Document 14 can be one of a plurality on a roll.

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