| US 7,546,024 B2 | ||
| Recording medium, reproduction apparatus, recording method, program, and reproduction method | ||
| Hiroshi Yahata, Kadoma (Japan); Tomoyuki Okada, Nara (Japan); Wataru Ikeda, Osaka (Japan); and Joseph McCrossan, Simi Valley, Calif. (US) | ||
| Assigned to Panasonic Corporation, Osaka (Japan) | ||
| Filed on Aug. 26, 2005, as Appl. No. 11/212,801. | ||
| Application 11/212801 is a continuation of application No. PCT/JP2004/002340, filed on Feb. 27, 2004. | ||
| Claims priority of application No. 2003-052838 (JP), filed on Feb. 28, 2003; and application No. 2003-280706 (JP), filed on Jul. 28, 2003. | ||
| Prior Publication US 2006/0050088 A1, Mar. 09, 2006 | ||
| This patent is subject to a terminal disclaimer. | ||
| Int. Cl. H04N 5/91 (2006.01); H04N 7/00 (2006.01) | ||
| U.S. Cl. 386—95 [386/125; 386/98; 369/59.25; 369/59.26] | 4 Claims |
| 1. A reproduction apparatus for reproducing a digital stream into which a video stream and a graphics stream are multiplexed,
said reproduction apparatus comprising:
a video decoder operable to decode the video stream into a motion picture made of a plurality of pictures; and
a graphics decoder operable to decode the graphics stream representing an interactive display overlaid with the motion picture,
the interactive display including a plurality of graphical button materials;
wherein:
the graphics stream includes a plurality of pieces of graphics data that are grouped under state sets;
the state sets respectively correspond to different states of at least one button material and are disposed in a sequential
order; and
said graphics decoder uses, for presenting the initial display of the interactive display, graphics data belonging to a top
state set and at least a piece of graphics data that belong to a second-order state set, and uses remaining graphics data
for updating the interactive display upon a user operation.
|