Method and device for correcting the rotation of a video display
First Claim
1. A method for correcting the rotation of a video image display on a display screen by a scanning of the display screen according to lines inclined by a first angle with respect to a reference direction, the screen being scanned by at least one electron beam modulated by a modulation signal provided by a modulation system based on successive digital video data, comprising the steps of:
- a) storing successive initial digital video data associated with the image to be displayed; and
b) transmitting to the modulation system new successive digital video data determined based on the successive initial digital video data, corresponding to the image which would be displayed from the initial digital video data for a scanning of the display screen according to lines inclined with respect to the reference direction by a second angle opposite to the first angle.
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Abstract
A method for displaying a video image on a display screen by a scanning of the display screen along lines inclined by a first angle with respect to a reference direction by at least one electron beam modulated by a modulation signal. The method includes the steps of storing at least partly the successive initial digital video data associated with the image to be displayed in a memory; transmitting new successive digital video data corresponding to the image which would be displayed based on the stored initial digital video data for a scanning of the display screen along lines inclined with respect to the reference direction by a second angle opposite to the first angle; and providing the modulation signal based on the new transmitted successive digital video data.
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Citations
9 Claims
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1. A method for correcting the rotation of a video image display on a display screen by a scanning of the display screen according to lines inclined by a first angle with respect to a reference direction, the screen being scanned by at least one electron beam modulated by a modulation signal provided by a modulation system based on successive digital video data, comprising the steps of:
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a) storing successive initial digital video data associated with the image to be displayed; and
b) transmitting to the modulation system new successive digital video data determined based on the successive initial digital video data, corresponding to the image which would be displayed from the initial digital video data for a scanning of the display screen according to lines inclined with respect to the reference direction by a second angle opposite to the first angle. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A device for displaying a video image on a display screen by a scanning of the display screen along lines inclined by a first angle with respect to a reference direction, the screen being scanned by at least one electron beam modulated by a modulation signal provided by a modulation system based on successive digital video data, comprising:
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means for storing successive initial digital video data;
means for providing the modulation system with new successive digital video data determined based on the successive initial digital video data, corresponding to the image which would be displayed based on the initial digital video data for a scanning of the display screen along lines inclined with respect to the reference direction by a second angle opposite to the first angle. - View Dependent Claims (8, 9)
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Specification