TRANSMISSION DEVICE AND TRANSMISSION METHOD, RECEPTION DEVICE AND RECEPTION METHOD, AND COMPUTER PROGRAM

摘要

In order to suitably transmit emergency alert information using a broadcast system, a preamble part (31) that has a transmission frame interval of 100 msec includes a tuning data part (31A) and a reservation bit part (31B) and comprises a predetermined total bit-length. L1 data for tuning to a relevant reception-side broadcast channel is stored in the tuning data part (31A). Further, emergency alert information that is processed by an emergency alert information processing part (202) is stored in the reservation bit part (31B) inside the preamble part (31). In a predefined message mode, a message expresses predefined emergency alert information in binary format and is transmitted in just one frame.