APPRATUS AND MTHOD FOR OVERLAY OF IMAGES IN VIDEO PRESENTING SYSTEM HAVING EMBEDDED OPERATIONG SYSTEM AND THERE OF DRIVING METHOD

An apparatus and a method for overlaying an image in a video presenting system at which an embedded operating system is mounted are provided to output two images after overlaying the images by realizing an overlay function at a final output end without using an internal processor of a CPU. A real im...

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Bibliographische Detailangaben
Hauptverfasser:	YI, JIN WOOK, UM, SUK BONG
Format:	Patent
Sprache:	eng
Schlagworte:	ACCESSORIES THEREFOR APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USINGWAVES OTHER THAN OPTICAL WAVES APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FORPROJECTING OR VIEWING THEM CINEMATOGRAPHY ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY ELECTROGRAPHY HOLOGRAPHY PHOTOGRAPHY PHYSICS PICTORIAL COMMUNICATION, e.g. TELEVISION
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Beschreibung
Zusammenfassung:	An apparatus and a method for overlaying an image in a video presenting system at which an embedded operating system is mounted are provided to output two images after overlaying the images by realizing an overlay function at a final output end without using an internal processor of a CPU. A real image unit(100) includes the followings. A VGA(Video Graphic Array) engine(107) signal-processes a first image or second image, which is selected as an main image, in a signal which enables the display of the second image, and outputs the selected first and second images on the main image after overlaying those two images by signal-processing the first and second images according to overlay information. A microcomputer(109) communicates with an embedded unit(200) periodically to the second image and the overlay information from the embedded unit to the VGA engine, and controls the signal-processing of the VGA engine according the selected main image and sub image.