Cathode ray tube with apparatus for reducing variation of deflec

Details Cathode ray tube with apparatus for reducing variation of deflec Cathode ray tube with apparatus for reducing variation of deflec

1997-08-08

2000-01-04

Kostak, Victor R.

Television

Basic receiver with additional function

Multimode

348704, H04N 546

Patent

active

060115939

ABSTRACT:
A display apparatus includes a luminance change detecting unit for detecting change of luminance of a cathode ray tube, a deflection size control quantity adjusting unit connected to the luminance change detecting unit for stabilizing a deflection size by changing a deflection size correcting quantity at different rates of change for a low luminance range and a high luminance range, respectively, on the basis of the detected change of luminance. The deflection size control quantity adjusting unit generates a proper deflection size control quantity adjusting voltage by synthesizing a high frequency component and a low frequency component contained in a signal indicating the luminance change with different gains, respectively.

REFERENCES:
patent: 4521802 (1985-06-01), Ikeda
patent: 4982279 (1991-01-01), Ishii et al.
patent: 5193006 (1993-03-01), Yamakazi
patent: 5357175 (1994-10-01), Kamada et al.
patent: 5523657 (1996-06-01), Kamei

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