Method for controlling degaussing coil of cathode ray tube

Details Method for controlling degaussing coil of cathode ray tube Method for controlling degaussing coil of cathode ray tube

1998-09-15

1999-11-23

Bettendorf, Justin P.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Pulse storing

361150, H04N 929

Patent

active

059906235

ABSTRACT:
A degaussing coil is driven when a driving request for the degaussing coil is received after turning on of a main power supply of a cathode ray tube and a driving request for the degaussing coil is set when the driving time of the degaussing coil is less than a reference time in case that the main power supply is turned off within the predetermined reference time. Consequently, the degaussing coil is driven regardless the time from turning off to turning on of the main power supply. Accordingly, the method for controlling the degaussing coil of the cathode ray tube can prevent the remanence of the cathode ray tube and always provide a safe image to a user.

REFERENCES:
patent: 4458178 (1984-07-01), Tenney et al.
patent: 5696565 (1997-12-01), Shintani et al.

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