Image display apparatus

Details Image display apparatus Image display apparatus

1988-11-23

1990-06-19

Oberley, Alvin

Communications: electrical

Visual indication

Movable

340731, G06F 314

Patent

active

049357310

ABSTRACT:
An image display apparatus is disclosed, in which a programmable counter is provided with a separate counter with the output thereof varied cyclically with the counting of horizontal sync signal pulses, the output of the counter is used to cull out the horizontal sync signal pulses supplied to the programmable counter, and pixel data of the same line is read out from a reflesh memory at least twice in a period, in which the input is culled. A display on a display panel having a fixed display resolution thus is obtained of display data of a lower resolution than the fixed display screen resolution.

REFERENCES:
patent: 4121283 (1978-10-01), Walker
patent: 4282555 (1981-08-01), Coviello

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