Patent ID: 6046778
Filing Date: 2000-04-04
Classification: H04N

Abstract:
A sub-picture unit generation apparatus for generating a plurality of sub-picture units that compose a sub-picture stream which is interleaved with a video stream into a system stream, each sub-picture unit including a subtitle image that is to be superimposed on moving images reproduced from the video stream, the sub-picture unit generation apparatus comprising:attribute storage means for storing a display attribute that shows a base position for arranging each subtitle image;character string storage means for storing a plurality of subtitle character strings;subtitle image generation means for generating a subtitle image from one of the plurality of subtitle character strings a stored in the character string storage means;display position determination means for determining a display position of the subtitle image according to the display attribute; andsub-picture unit generation means for generating a sub-picture unit that includes the subtitle image and display position data showing the determined display position.