Display driver circuit and drive method thereof

Details Display driver circuit and drive method thereof Display driver circuit and drive method thereof

2005-03-02

2009-08-04

Awad, Amr (Department: 2629)

Computer graphics processing and selective visual display system

Display driving control circuitry

Intensity or color driving control

C345S100000

Reexamination Certificate

active

07570276

ABSTRACT:
There is provided a technology that can reduce the number of signal lines by encoding a PWM signal used in a display driver IC. The display driver circuit for displaying a gradation on a display screen based on a PWM signal includes a PWM signal generator for generating a PWM signal, a PWM encoder for encoding the PWM signal generated from the PWM signal generator, a PWM decoder for decoding the encoded PWM signal into the PWM signal, a switching unit for selectively outputting the PWM signal generated from the PWM decoder, a data storage unit for storing a display data used to switch the switching unit, and an SRAM decoder for outputting an on/off signal to the switching unit according to the display data outputted from the data storage unit.

REFERENCES:
patent: 5175549 (1992-12-01), Back
patent: 6377234 (2002-04-01), Nogawa
patent: 6724378 (2004-04-01), Tamura et al.
patent: 08095530 (1996-04-01), None
patent: 08186995 (1996-07-01), None

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