Storage medium including text-based caption information, reproducing apparatus and reproducing method thereof

Abstract

A storage medium including moving picture data and subtitle data to be output as a graphic overlapping an image based on the moving picture data, wherein the subtitle data includes text data to generate pixel data converted into a bitmap image, and control information to control the pixel data to be output in real time, and a reproducing apparatus and reproducing method using the storage medium.

1 . A method of reproducing information from a storage medium comprising moving picture data and subtitle data to be output as a graphic overlapping on an image based on the moving picture data, the method comprising:
 reading the subtitle data including text data and control information from the storage medium;   decoding the text data, parsing caption contents and output style information, and converting the caption contents into pixel data formed as a bitmap image based on the parsed style information;   decoding the control information, parsing time information to control the pixel data to be output in real time, and parsing position information to control a position at which a caption is output; and   outputting the converted pixel data in real time according to the parsed time information and position information.   
   
   
       2 . A storage medium comprising subtitle information to display a caption, the subtitle information comprising:
 text data to generate pixel data converted into a bitmap image; and   control information to control the pixel data to be output in real time.   
   
   
       3 . An apparatus to reproduce information from a storage medium having subtitle information, the apparatus comprising:
 a decoder to decode text data from the subtitle information and generate a bitmap image, and to decode and parse control information from the subtitle data to control a caption to be output in real time.   
   
   
       4 . The apparatus of  claim 3 , further comprising a graphic controller to control the caption to be output in real time according to the control information. 
   
   
       5 . A method of reproducing subtitle information from a storage medium, the method comprising:
 decoding text data and control information from the subtitle information;   parsing caption contents, output style information, time information, and position information to control a position at which the caption is output from the text data and control information;   converting the caption contents into the caption based on the output style information; and   outputting the caption in real time according to the time information and position information.   
   
   
       6 . A text caption decoder of an apparatus to reproduce information from a storage medium comprising moving picture data and subtitle data, the text decoder comprising:
 a text caption parser to decode and parse text data and control information from the subtitle data; and   a font renderer to convert the parsed text data into a bitmap image so that the parsed text data is output as a graphic overlapping an image based on the moving picture data.   
   
   
       7 . The text caption decoder of  claim 6 , wherein the text data as the graphic overlapping the image is output in real time.