Patent ID: 7437058

Claim:
A data transmitter for transmission of material data including video and audio data recorded in a recording medium, the apparatus comprising: a data generating means for generating unique identification data which is to be added to each of the material data and consists of a Value area where metadata being additional data about the video and audio data is stored, a Value Length area provided before the Value area and where the data length of the metadata is stated and a Universal Label Data Key area provided before the Value Length area and where the metadata is uniquely labeled, the Value area including at least a Material Number area where there is stored a code for differentiating the material and a Spatial Coordinates area where there is stored a code indicating position information as to a position where the material data were created; and a transmitting means for transmitting the identification data, the position information about a position where the material data were created being stored as altitude information, longitude information and latitude information in the Spatial Coordinates area; and the data generating means generating the identification data by stating, in a part of the altitude information stored in the Spatial Coordinates area thereof, at least identification information permitting to identify which the altitude information is, a distance from the center of the earth or a distance from the surface of the earth ellipsoid, measured by a predetermined geodetic coordinate system.