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Monochrome Bar Chart Display Characters for a Character Generator Display

IP.com Disclosure Number: IPCOM000042131D
Original Publication Date: 1984-Mar-01
Included in the Prior Art Database: 2005-Feb-03
Document File: 2 page(s) / 79K

Publishing Venue

IBM

Related People

Dwire, JD: AUTHOR [+3]

Abstract

The present system is related to the display of bar charts on a word processing display terminal. Most display systems which are used to display bar charts are either APA (all-points-addressable) displays used with a color plotter or have a limit of one or two printable or non-printable characters for displaying simple bar charts. The present display system provides a character font, shown in the figure, which involves the combination of four basic bar shade characters, as exemplified by characters 4, 12, 20 and 28. Various combinations of these four basic non-color bar shading characters have been made to provide one-half character vertical resolution and to be compatible with a single color printer.

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Monochrome Bar Chart Display Characters for a Character Generator Display

The present system is related to the display of bar charts on a word processing display terminal. Most display systems which are used to display bar charts are either APA (all-points-addressable) displays used with a color plotter or have a limit of one or two printable or non-printable characters for displaying simple bar charts. The present display system provides a character font, shown in the figure, which involves the combination of four basic bar shade characters, as exemplified by characters 4, 12, 20 and 28. Various combinations of these four basic non-color bar shading characters have been made to provide one-half character vertical resolution and to be compatible with a single color printer. The characters in the font, shown in the drawing, have been designed to meet the following desirable criteria considered to be significant in the construction of bars in a graphic bar chart in a display. 1. Each bar must be easily distinguished from the other. This is accomplished by four unique designs: character 20 turns on » of the available dots, character 4 turns on 1/4 of the dots, character 12 turns on 3/4 of the dots, and character 28 turns on all dots. 2. Each character must be designed to minimize flicker on an interface display. This is accomplished by designing each of the characters to turn on the same number of dots in both the odd and even fields. 3. Each character must be desig...