Patent ID: 8271573

Claim:
An apparatus for requesting a report on an event for an Event Reporting on the event that occurs in accordance with use of a digital item having a first data structure based on Moving Picture expert group (MPEG) from a standard item of MPEG-21, the apparatus comprising: a processor; an Event Report Request (ERR) generation means for generating an ERR data in response to at least one of a user's request and a received ERR data, the user's request and the received ERR data requesting an Event Report (ER) data for the Event Reporting; an ERR transmission means for transmitting the ERR data generated in the ERR generation means; an ERR receiving means for receiving the ERR data; and an ERR analyzing means for analyzing the ERR data received in the ERR receiving means, wherein the ERR data includes a following second data structure: ERR descriptor information describing characteristics of the ERR data; first ER descriptor information describing characteristics of ER data generated based on the ERR data; and condition descriptor information describing conditions of occurrence of the event, wherein the ER data includes a following third data structure: second ER descriptor information describing characteristics of the ER data; Original ERR information describing ERR data requesting to generate the ER data; and payload information including reporting information of the ER data, wherein the ER data further includes ERR information describing information on another ERR data included in the ER data, and wherein each of the usage of the digital item having the first data structure, the ERR generation means having the second data structure means, and the ER data having the third data structure represents a standardized data structure of metadata, which is mutually compatible for each of the digital item, the ERR generation means, and the ER data.