| 摘要 |
PURPOSE: An apparatus and method of displaying a closed captioning data of a wide digital TV is provided to divide a TV screen into two parts, and display an image signal on one part and a closed captioning data on the other part, thereby simultaneously providing two services to a user. CONSTITUTION: An apparatus for displaying a closed captioning data of a wide digital TV comprises a micro-computer for transmitting a digital MPEG compressed image/sound transport stream through a tuner and an analog/digital converter or generating a graphic image according to an order by a user, a MPEG audio/video decoder for restoring the MPEG compressed image/sound transport stream and then outputting an information composed with the graphic image and having a displaying unit, an encoder for encoding an image information according to a broadcasting way, and a digital/analog converter for converting a sound information into an analog sound signal and then outputting the signal. In the apparatus, the displaying unit comprises an image superpositioning portion(301) for superpositioning a closed captioning data on the restored digital compressed image data, a 4:3 format converter(302) for converting an image of 16:9 ratio into an image of 4:3 ratio, a first image mixer(303) for displaying the image of 4:3 ratio on an entire screen and composing the closed captioning data image to simultaneously display the image and the closed captioning data, and a second image mixer(304) for dividing the entire screen of the TV into two parts and displaying the image at one part and the closed captioning data at the other part.
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