Image display apparatus

Details Image display apparatus Image display apparatus

1988-01-20

1989-04-11

Brigance, Gerald L.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

G09G 116

Patent

active

048210315

ABSTRACT:
Image display apparatus reads data from an image memory to produce an image on a interlaced raster-scanned display. The image can be zoomed by producing X and Y magnifications. X magnification is produced by repeating each pixel a predetermined number of times. Y magnification is produced by repeating each display line a predetermined number of times. The number of repetitions of each display line can be varied from line to line and can be different in the two frames, so as to cope with odd-number Y magnification factors. This is achieved by using a register file which holds the required line repetition counts.

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patent: 4654651 (1987-03-01), Kishi et al.
patent: 4754270 (1988-06-01), Murauchi

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