Method of and apparatus for forming outline character

Details Method of and apparatus for forming outline character Method of and apparatus for forming outline character

1991-10-25

1994-02-22

Weldon, Ulysses

Computer graphics processing and selective visual display system

Display peripheral interface input device

Light pen for fluid matrix display panel

345143, G09G 106

Patent

active

052891704

ABSTRACT:
A method of and an apparatus for forming an outline character by making a character, numeral, mark, or the like black at the periphery thereof and white at the inner portions thereof. When the original character data exists at at least one upper or lower end in a dot display space, the character data at the end is removed and shortened. The shortened character dot pattern is periphally expanded by at least one dot, and the expanded character is removed to form white space within the shortened character. In another aspect, the character dot pattern is periphally expanded by at least one dot. When the original character exists at at least one upper or lower end in the dot display space, the expanded character is removed to form white spaces within the original character dot pattern except for an upper or lower end in the dot display space. Thus, if the original character dot pattern exists at at least one upper or lower end, a character completely enclosed within a black periphery can be obtained.

REFERENCES:
patent: 4692758 (1987-09-01), Fawcett et al.
patent: 4837847 (1989-06-01), Shirasaka et al.
patent: 4903014 (1990-02-01), Yoshida
patent: 4959801 (1990-09-01), Apley et al.
patent: 4979130 (1990-12-01), Li et al.

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