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DATA STRUCTURE OF ENCRYPTED MEDIA FILE, ENCRYPTED MEDIA CREATING METHOD, ENCRYPTED MEDIA DECODING METHOD, ENCRYPTED MEDIA SECTIONING METHOD, AND ENCRYPTED MEDIA COUPLING METHOD AND DEVICE
DATA STRUCTURE OF ENCRYPTED MEDIA FILE, ENCRYPTED MEDIA CREATING METHOD, ENCRYPTED MEDIA DECODING METHOD, ENCRYPTED MEDIA SECTIONING METHOD, AND ENCRYPTED MEDIA COUPLING METHOD AND DEVICE
PROBLEM TO BE SOLVED: To provide a data structure of an encrypted media file for allowing file sectioning/coupling in an encrypted state.;SOLUTION: Information showing the position and size of media data in the encrypted media file, and information about a reproduction time of the media data are recorded in plain text data in a first box and a third box, while encrypted media data are recorded in a second box. Information showing the box size of the first, second and third boxes and information to distinguish a box are recorded in plain text data.;COPYRIGHT: (C)2010,JPO&INPIT
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