Led display device and method for controlling the same

Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix

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Details

345 55, G09G 332

Patent

active

057084521

ABSTRACT:
An LED display device and a method for controlling the same have been proposed which comprises at least an LED matrix circuit in which LEDs are arranged in a matrix fashion, an analogue switch for respectively selecting analogue display data for respective rows in said LED matrix circuit, a sample hold circuit for sample-holding the display data selected by the analogue switch, a driver for driving and controlling the LEDs in corresponding rows of the LED matrix circuit based on the display data being sample-held, and a counter and a decoder for generating a switching signal of the analogue switch. According to this configuration, a gradation display of the LEDs is executed by virtue of the display data as analogue signals.

REFERENCES:
patent: 3906482 (1975-09-01), Morrison
patent: 5184114 (1993-02-01), Brown

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