DIGITAL DATA TRANSMITTER, DIGITAL DATA RECEIVER AND DIGITAL DATA COMMUNICATION DEVICE

摘要

PROBLEM TO BE SOLVED: To effectively utilize bands and to surely provide information requiring urgency such as disaster information to a user with the highest priority through a digital broadcasting receiver carried by the user even when the user is away from home.

SOLUTION: Digital data are multiplexed on the basis of the transmission capacity of the digital data, a data sort which is the attribute of the digital data, priority order, and data validity time and the multiplied data are transmitted. Consequently bands can be effectively utilized and information requiring urgency can be surely transmitted.

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