Method and device of alignment of a video image with an edge of a display screen
AssigneeSTMicroelectronics S.r.l.
InventorsBenoit Marchand, Patrice Leurent
Life of this patent
Estimating the term…
Abstract
The aligning a video image with an edge of a display screen, the video image being displayed by a scanning of lines of the display screen by at least one electron beam modulated by a modulation signal, including, for each scanned line of the screen, storing successive digital video data in a storage device; detecting the end of the scanning of the line preceding the scanned line; initiating a delay upon detection of the end of the scanning of the line preceding the scanned line; starting the reading, from the storage device, of the successive digital video data stored at the end of the delay; and providing the modulation signal based on the read successive digital video data.
Claims8
A method for aligning a video image with an edge of a display screen, the video image being displayed by a scanning of lines of the display screen by at least one electron beam modulated by a modulation signal, comprising, for each scanned line of the screen:
- storing successive digital video data in a storage means;
- detecting an end of a scanning of a line preceding the scanned line;
- initiating a delay upon detection of the end of the scanning of the line preceding the scanned line;
- starting a reading, from the storage means, of the successive digital video data stored at the end of the delay;
- and
- providing the modulation signal based on the read successive digital video data.
A device for aligning a video image with an edge of a display screen, the video image being displayed by a scanning of lines of the display screen by at least one electron beam emitted by an electron gun and modulated by a modulation signal, comprising:
- means (32, 34, 36) for storing successive digital video data;
- a counter receiving a signal representative of an end of the scanning of a line and transmitting said representative signal after a determined delay;
- means for providing a read start control signal based on the representative signal transmitted by the counter;
- means for reading from the means for storing the successive digital video data upon reception of the read start control signal;
- and
- means for providing the modulation signal based on the read successive digital video data.
Dependencies are inferred from the claim text.