Computer graphics processing and selective visual display system – Display driving control circuitry – Controlling the condition of display elements
Patent
1992-07-08
1995-12-12
Zimmerman, Mark K.
Computer graphics processing and selective visual display system
Display driving control circuitry
Controlling the condition of display elements
345 3, 345 30, 345132, 345194, G06T 100
Patent
active
054758084
ABSTRACT:
When the horizontal size of a display character is given by 9 dots, 8-dot font data is stored in a font register, and 1-dot display attribute data is stored in a register. Display attribute data is data for designating the 8th dot of a character pattern to be displayed. A selector converts 9-dot data supplied from the font register and the register to serial data on the basis of a counter value of a counter and supplies the serial data to a CRT when 80 characters are to be displayed in the horizontal direction on the CRT having a horizontal resolution of 720 dots per scanning line. When an FPD having a horizontal resolution of 640 dots per scanning line is to be used, the selector converts only 8-dot font data supplied from the font register to serial data on the basis of a counter value from the counter and supplies the serial data to the FPD. As a result, eighty 8-dot characters are displayed in the horizontal direction of the FPD despite that display of 9-dot characters is designated. However, the numbers of display characters of the CRT and the FPD in the horizontal direction coincide.
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Feild J.
Kabushiki Kaisha Toshiba
Zimmerman Mark K.
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