BROADCAST UNIT, MAPPING INFORMATION TRANSMITTER, RECEIVER, PRESENTATION OBJECT DATA TRANSMITTER, BROADCAST COMMUNICATION DATA SYNCHRONOUS SYSTEM, AND PROGRAM

摘要

PROBLEM TO BE SOLVED: To synchronize a dynamic image with presentation object data without repairing a broadcast unit and a receiver.SOLUTION: A receiver includes: a presentation object data receiving part which receives presentation object data to be presented in synchronization with a dynamic image outputted by a broadcast unit and the presentation time of the presentation object data represented by a predetermined time system; a mapping information receiving part which receives mapping information showing relation between a clock count value of the broadcast unit and the time system via a communication network; a conversion part which converts the presentation time of the presentation object data from the time system to a count value on the basis of the mapping information; and a presentation part which controls the presentation of the dynamic image and the presentation object data on the basis of the count value.SELECTED DRAWING: Figure 1