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Character Highlighting Technique

IP.com Disclosure Number: IPCOM000085279D
Original Publication Date: 1976-Mar-01
Included in the Prior Art Database: 2005-Mar-02
Document File: 2 page(s) / 63K

Publishing Venue

IBM

Related People

Davies, TG: AUTHOR [+3]

Abstract

The figures show two methods of highlighting certain displays or printed characters which is advantageous on single intensity output devices, such as gas panel displays and ink jet printers.

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Character Highlighting Technique

The figures show two methods of highlighting certain displays or printed characters which is advantageous on single intensity output devices, such as gas panel displays and ink jet printers.

Fig. 1 requires that a second character pattern be generated for each character capable of being highlighted.

Fig. 2 shows the characters generated by a shift algorithm which adds a unit or dot horizontally adjacent to every unit in the original character. The result is the same as if a standard character were created and then overstruck with the same character horizontally displaced one unit. The shifting can be done in a shift register one bit position longer than the character matrix width in horizontal scan machines by loading the shift register with a character row pattern, shifting one position horizontally, and ORing the shifted row pattern from the shift register with the original row pattern from the character generator.

Vertical Scan machines can also use the shift method of highlighting by ORing two adjacent column outputs from the character generator, to provide each column pattern for the highlighted character.

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