Power saving circuit of LCD unit

Details Power saving circuit of LCD unit Power saving circuit of LCD unit

1997-10-03

2000-02-01

Luu, Matthew

Computer graphics processing and selective visual display system

Display driving control circuitry

Display power source

345102, G09G 500

Patent

active

060208791

ABSTRACT:
To realize power saving of an LCD unit according to VESA standard with a low cost, a power saving circuit of the invention comprises screen control means (2, 3, 4) for turning off a back-light of the LCD (5) and stopping display data to be supplied to the LCD, when a vertical synchronous signal output by the LCD control circuit is suspended for a first fixed time; and power control means (6, 7) for stopping a power supply of the LCD, when a horizontal synchronous signal output by the LCD control circuit is suspended for a second fixed time.

REFERENCES:
patent: 5005013 (1991-04-01), Tsukamoto et al.
patent: 5389952 (1995-02-01), Kikinis
patent: 5511201 (1996-04-01), Kamimaki et al.
patent: 5731794 (1998-03-01), Miyazawa

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