Browse Prior Art Database

Video Graphic Terminal With Projection CRT

IP.com Disclosure Number: IPCOM000059795D
Original Publication Date: 1986-Jan-01
Included in the Prior Art Database: 2005-Mar-08
Document File: 2 page(s) / 60K

Publishing Venue

IBM

Related People

Foglia, HR: AUTHOR

Abstract

This article describes an integrated multi-function user terminal. The terminal is able to store and display CI (coded information) and NCI (non-coded information) images, digitally capture and display handwritten cursive script and/or graphic input via a special high resolution light pen, interact with superimposed images displayed on a screen, scan documents (page at a time) and thereby capture and store as well as reproduce hard copy output directly from the screen, and provide local intelligence, audio, video, storage and remote teleprocessing. The terminal can be configured into a portable (attache case) version.

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Video Graphic Terminal With Projection CRT

This article describes an integrated multi-function user terminal. The terminal is able to store and display CI (coded information) and NCI (non-coded information) images, digitally capture and display handwritten cursive script and/or graphic input via a special high resolution light pen, interact with superimposed images displayed on a screen, scan documents (page at a time) and thereby capture and store as well as reproduce hard copy output directly from the screen, and provide local intelligence, audio, video, storage and remote teleprocessing. The terminal can be configured into a portable (attache case) version. The multiplicity of function is achieved by the use of different phosphors with different persistence in a CRT (cathode ray tube) and electronic selection to achieve different characteristics to facilitate the different modes of operation. The figure shows a schematic representation of the integrated terminal which includes a CRT, whose raster scanned phosphor faceplate image is projected onto a manually-selectable screen, a high-resolution light pen, and electronic system circuitry package for raster image control, storage and function/data manipulation. The CRT and mounted lens assembly are used to focus an image upon the back side of the projection screen. Several selectable screens are provided with a hanger for holding the selected screen in place by its swing lip. At least five types of screens may be...