Image data processing apparatus

Details Image data processing apparatus Image data processing apparatus

1993-06-14

1996-09-24

Saras, Steven

Computer graphics processing and selective visual display system

Display peripheral interface input device

Light pen for fluid matrix display panel

345 23, 345189, 382205, G09G 536, G06K 956

Patent

active

055595308

ABSTRACT:
An image data processing apparatus for generating a font with contour lines expressed with gradations comprises a font ROM for storing a binary font data. An output port is provided for reading a target pixel with ambient pixels arranged in 3.times.3 matrix of the binary font data stored in the font ROM. A shift register produces an address data based on the binary data read from the font ROM. A look-up table has 2.sup.3.times.3 elements in which multilevel values in commensurate with the pixel patterns included the 3.times.3 matrix. One data of the multilevel data is output from the look-up table by designating one element by said address data, and is used as a gradation data of the target pixel. Thus, pixel of font can be expressed with a gradation, the jagged contour of the font is reduced.

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