(54) TRANSMITTING DEVICE,
TRANSMITTING METHOD AND
RECONSTRUCTION METHOD FOR
BROADCASTS WITH HIDDEN SUBTITLES
(75) Inventor: Toshiroh Nishio, Hirakata (JP)
(73) Assignee: Panasonic Corporation, Osaka (JP)
( * ) Notice: Subject to any disclaimer, the term of this patent is extended or adjusted under 35 U.S.C. 154(b) by 673 days.
(21) Appl.No.: 11/242,954
(22) Filed: Oct. 5, 2005
(65) Prior Publication Data
US 2006/0083301 Al Apr. 20, 2006
(30) Foreign Application Priority Data
Oct. 6,2004 (JP) 2004-293513
(51) Int. CI.
G06K 9/32 (2006.01)
(52) U.S. CI 382/293; 382/282; 382/284;
(58) Field of Classification Search 382/275,
382/282, 284, 293, 294 See application file for complete search history.
(56) References Cited
U.S. PATENT DOCUMENTS
6,473,794 Bl * 10/2002 Guheenetal 709/223
A transmitting device includes a main image generation unit generating a main image by overlaying first overlay data over an original image; an extraction unit extracting, from the original image, a partial image of a portion over which the first overlay data is overlaid; a first sub-image generation unit generating a first sub-image by overlaying second overlay data over the partial image; and encoding units and a multiplexing unit generating transmitted data by associating the main image and the first sub-image, and associating the main image with a broadcast time of the main image. Thus, the present invention provides a transmitting device, a reconstruction device, a transmitting method and a reconstruction method for broadcasts with hidden subtitles, having good operability for the viewer.
24 Claims, 14 Drawing Sheets