| US 7,574,119 B2 | ||
| Information playback apparatus and information playback method | ||
| Kazuhiko Taira, Yokohama (Japan); Hideo Ando, Yokohama (Japan); Yoichiro Yamagata, Yokohama (Japan); and Hideki Mimura, Yokohama (Japan) | ||
| Assigned to Kabushiki Kaisha Toshiba, Tokyo (Japan) | ||
| Filed on Jul. 25, 2005, as Appl. No. 11/187,985. | ||
| Claims priority of application No. 2004-219019 (JP), filed on Jul. 27, 2004. | ||
| Prior Publication US 2006/0024031 A1, Feb. 02, 2006 | ||
| Int. Cl. H04N 5/91 (2006.01) | ||
| U.S. Cl. 386—131 [386/46; 386/95] | 4 Claims |
| 1. An information playback apparatus configured to play back an information recording medium on which main image information
having first resolution, first sub-picture information having the first resolution, second sub-picture information having
second resolution which is lower than the first resolution, and attribute information including information denoting the resolution
of the first and second sub-picture information have been recorded, the information playback apparatus comprising:
a first image information output unit configured to overlap the first sub-picture information onto the main image information
to be output in accordance with a required image output format; and
a second image information output unit configured to overlap the second sub-picture information onto information into which
the main image information has been converted to have the second resolution to be output in accordance with a required image
output format,
wherein the first and second sub-picture information comprise a plurality of sub-picture units each having a sub-picture unit
header, the sub-picture unit header includes a previous header and a subsequent header, and information distinguishing between
the first sub-picture information and the second sub-picture information is recorded on the previous header.
|