Monitor protection system

Details Monitor protection system Monitor protection system

1997-10-17

2000-03-07

Peng, John K.

Television

Cathode-ray tube display excessive voltage control

348378, 348173, 348377, 348380, 315411, 315386, H04N 568, H04N 320, H01J 2970, G09G 104

Patent

active

060347295

ABSTRACT:
A monitor protection system comprise a display power management signaling (DPMS) operating unit for performing a predetermined power control; a horizontal deflection detecting circuit for detecting a horizontal deflection signal from a horizontal deflection circuit; a vertical deflection detecting circuit for detecting a vertical deflection signal from a vertical deflection circuit; and a control circuit for determining whether the horizontal deflection signal and the vertical deflection signal are normal, and generating a predetermine control signal to run the DPMS operating unit in order to observe the conditions of horizontal/vertical synchronization signals continuously, and protect a CRT monitor independently from the horizontal/vertical synchronization input conditions.

REFERENCES:
patent: 4459517 (1984-07-01), Hicks
patent: 4654717 (1987-03-01), Stoughton
patent: 4749919 (1988-06-01), Beaumont et al.
patent: 5047698 (1991-09-01), Fernsler et al.
patent: 5671017 (1997-09-01), Chujo

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