Image distortion correction apparatus capable of correcting...

Details Image distortion correction apparatus capable of correcting... Image distortion correction apparatus capable of correcting...

2006-10-31

2006-10-31

Vo, Tuyet Thi (Department: 2821)

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Cathode-ray deflections circuits

C315S387000, C348S807000, C348S806000

Reexamination Certificate

active

07129655

ABSTRACT:
An image distortion correction apparatus is disclosed which can correct misconvergence using a D-class amplifier. The image distortion correction apparatus has an image processor for detecting an image signal and horizontal/vertical synchronous signals from a signal received from an external source; a distortion value calculator for calculating a misconvergence value occurring when the image signal is scanned based on the horizontal/vertical synchronous signals; a correction value calculator for calculating a convergence correction value of a pulse waveform to correct misconvergence of the image signal based on the misconvergence value; an amplifier for performing a D-class amplification with respect to the convergence correction value; and a convergence yoke fixed to a cathode ray tube (CRT) for controlling a path of an electron beam corresponding to the image signal based on the convergence correction value amplified in the amplifier.

REFERENCES:
patent: 4857998 (1989-08-01), Tsujihara et al.
patent: 6853157 (2005-02-01), Lee et al.
patent: 1155209 (1997-07-01), None
patent: 1313010 (2001-09-01), None
patent: 11-275380 (1999-10-01), None
patent: 2001-57682 (2001-02-01), None

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