TRANSMISSION DEVICE, TRANSMISSION METHOD, RECEPTION DEVICE, RECEPTION METHOD, PROGRAM, AND BROADCAST SYSTEM

摘要

This invention relates to a transmission apparatus, a transmission method, a reception apparatus, a reception method, a program, and a broadcasting system capable of temporally dispersing accesses to a server from potentially numerous reception apparatuses. A first operation scenario assumes cases in which the total number of the reception apparatuses remains virtually unchanged. In order to quickly settle accesses to a server 46, a validity probability parameter N = P1 in the item of trigger validity of trigger information to be transmitted for the first time is set to P1 = Ne/At (a rounded-up integer). The validity probability parameter N = Pk in the item of trigger validity of trigger information to be transmitted for the k-th time (k is an integer of at least 2) is set to Pk = (Ne - (k - 1)At)/At = P1 - (k - 1). After Pk drops to equal to or below 1, Pk remains set for 1. This invention can be applied where the reception apparatus is controlled using a TV program broadcast signal.