LED array and partitive driving method therefor using overlappin

Details LED array and partitive driving method therefor using overlappin LED array and partitive driving method therefor using overlappin

1989-12-05

1991-11-05

Coles, Sr., Edward L.

Facsimile and static presentation processing

Facsimile

Picture signal generator

250573, H04N 104

Patent

active

050634623

ABSTRACT:
An LED array has a plurality of LED blocks each of which can independently be illuminated or extinguished. The LED array includes an illumination control unit for illuminating, after the lapse of a time period T1 after a block is illuminated, a succeeding block; an extinguishment control unit for extinguishing, after the lapse of a time period T2 after a block is illuminated, another block which has been illuminated since before the former block was illuminated; and a time control unit for determining the time period T2. The time control unit is adapted to automatically control the time period T2 in accordance with the outputs from a line sensor which reads out an original image illuminated by the LED array.

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