Method and apparatus for controlling array of light-emitting ele

Details Method and apparatus for controlling array of light-emitting ele Method and apparatus for controlling array of light-emitting ele

1994-04-11

1995-10-10

Yan, Ren

Incremental printing of symbolic information

Light or beam marking apparatus or processes

Scan of light

347240, G01D 1510

Patent

active

054574889

ABSTRACT:
An array of light-emitting elements is switched on and off to produce a graded-intensity image on a photosensitive medium. Each light-emitting element is controlled by M-bit data representing the intensity of one image pixel, where M is a fixed integer greater than one. M strobe signals are generated for non-overlapping time intervals of different lengths, to strobe the M data bits for each light-emitting element. When strobed, each data bit switches its corresponding light-emitting element on or off. Image intensity depends on the total amount of time for which each light-emitting element is switched on.

REFERENCES:
patent: 4455562 (1984-06-01), Dolan
patent: 4455578 (1984-06-01), Fearnside
patent: 4525729 (1985-06-01), Agulrek
patent: 5126758 (1992-06-01), Kikuno
patent: 5142301 (1992-08-01), Matsumoto

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