Panel display apparatus to satisfactorily display both character

Details Panel display apparatus to satisfactorily display both character Panel display apparatus to satisfactorily display both character

1991-11-07

1994-02-15

Brier, Jeffery

Computer graphics processing and selective visual display system

Display peripheral interface input device

Light pen for fluid matrix display panel

345 55, 345 84, G09G 106

Patent

active

052870928

ABSTRACT:
A panel display apparatus includes a V-RAM, a display controller, a low-pass filter and a panel display unit. Digital video signals read from the V-RAM by the display controller are input to the low-pass filter. Then, of the input digital video signals, high frequency components in spatial frequency characteristic thereof are removed, as required, by the low-pass filter under control of the display controller and the resulting digital video signals are fed to the panel display unit. Thus, satisfactory images are displayed on the panel display unit under the control of the display controller in accordance with the digital video signals from the low-pass filter whether the images are characters and graphics or natural pictures.

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Rosenfeld, Digital Picture Processing, 2nd Edition, vol. 1, Academic Press, Inc., 1982, pp. 10-18.

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