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Symbol Selection by Indexing

IP.com Disclosure Number: IPCOM000059753D
Original Publication Date: 1986-Jan-01
Included in the Prior Art Database: 2005-Mar-08
Document File: 2 page(s) / 28K

Publishing Venue

IBM

Related People

Stephens, LK: AUTHOR

Abstract

This article concerns a computer-assisted design (CAD) system for computers which is easy to use and facilitates the generation of schematic diagrams, flow charts and other free-form graphics displays by a joystick or similar device. The cursor symbol itself is a graphics character or an alpha- numeric (A/N) which may be moved about the display by means of a joystick or similar input device. Once the graphics character or A/N string is positioned at the desired location, the operator presses a command button, and the graphics symbol or A/N string is fixed in position on the display screen by reading the symbol data into the display buffer at that position. The cursor symbol can be moved again to another location on the display and another character fixed in position on the display by pressing the command button.

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Symbol Selection by Indexing

This article concerns a computer-assisted design (CAD) system for computers which is easy to use and facilitates the generation of schematic diagrams, flow charts and other free-form graphics displays by a joystick or similar device. The cursor symbol itself is a graphics character or an alpha- numeric (A/N) which may be moved about the display by means of a joystick or similar input device. Once the graphics character or A/N string is positioned at the desired location, the operator presses a command button, and the graphics symbol or A/N string is fixed in position on the display screen by reading the symbol data into the display buffer at that position. The cursor symbol can be moved again to another location on the display and another character fixed in position on the display by pressing the command button. Different cursor symbols can be selected from symbol tables so that a variety of symbols can be used to generate the graphics display. The current cursor symbol is demarked from other graphics characters fixed in the display by continuously exclusive ORing the cursor symbol with the background graphics data. When building schematics or diagrams of complex processes or machines on the display, the cursor symbols are formed to represent various pieces of the whole item. These pieces are then combined to create the whole picture. When one combines the pieces, it is necessary to choose the piece of interest quickly and easily, pos...