Display device

Details Display device Display device

1994-07-20

1995-02-28

Weldon, Ulysses

Computer graphics processing and selective visual display system

Display peripheral interface input device

Light pen for fluid matrix display panel

345207, 345212, 345 1, G09G 320

Patent

active

053941675

ABSTRACT:
The display device comprises: a main control circuit for generating a light intensity reference; n secondary control circuits, each associated with a respective one of the n display subassemblies, each secondary control circuit including circuit for receiving the reference and circuit for monitoring the light source(s) of the associated subassembly so that each emitted light intensity corresponds to the reference light intensity; the monitor circuit presented by each secondary control circuit comprising circuit for directly detecting each light intensity emitted by the associated light source(s), circuit for comparing each light intensity with the reference, and circuit for controlling the power supply to the associated light source(s) as a function of the result of the comparison; and the circuit for direct detection of each light intensity comprise one or more fibers of the bundle of optical fibers and connected to a photoelectrical converter device.

REFERENCES:
patent: 4299447 (1981-11-01), Soltan
patent: 4825201 (1989-04-01), Watanabe
patent: 5053765 (1991-10-01), Sonehara et al.
patent: 5095502 (1992-03-01), Finzel
patent: 5160921 (1992-11-01), Fillinger

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