Method and circuit for improving a quality of display on an...

Details Method and circuit for improving a quality of display on an... Method and circuit for improving a quality of display on an...

2008-01-08

2008-01-08

Hjerpe, Richard (Department: 2629)

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

C345S211000

Reexamination Certificate

active

10463476

ABSTRACT:
A method and circuit for improving a quality of display on an LAD screen are disclosed. The method is to synchronize a vertical synchronization signal of a video signal supplied to an LAD system with an oscillation signal produced by a burst mode DC-to-AC inverter driving the lamps of the system in order to suppress interference noise appearing on an LCD screen. The circuit suggested includes mainly two semiconductor switches, impedance elements, and a diode to realize the synchronization function.

REFERENCES:
patent: 6501234 (2002-12-01), Lin et al.

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