Patent ID: 7502799

Claim:
A reproduction apparatus of metadata and a moving image, comprising: a first reproduction means for reproducing the moving image; an input means for inputting the metadata related to the moving image; a second reproduction means for reproducing the metadata; a user interface for receiving an instruction of reproduction from a user; and a system clock for measuring an absolute time expressed by a year, a month, a date, and a time, wherein the metadata includes one or more access units, each access unit being a data unit, and third data to specify an effective time limit expressed by the absolute time in which the metadata can be reproduced, each of the access units including: object area data for describing a spatio-temporal region of the object appearing in the moving image, first data for specifying an effective period of the object area data with respect to a time axis of the moving image, second data including one or both of data for specifying a display method relevant to the object area and data for specifying a processing to be performed when the object area is specified; and the second reproduction means, in a case where an instruction to reproduce the metadata is issued from the user interface, when the absolute time measured by the system clock is within an effective time limit which is specified by the third data, performs the display method or the processing specified by the second data for the object area data in the effective period specified by the first data.