To acquire delay time from original presentation time of a broadcasting content.
A communication input/output part 411 supplies an external content distribution server 16 storing a communication content with a content request signal requesting transmission of the communication content; and acquires the communication content transmitted by the content distribution server 16 in response to the content request signal. A synchronization part 442 delays reproduction of the broadcasting content in response to the reception of the communication content. A delay time calculation part 443 calculates delay time of the broadcasting content whose reproduction is delayed by the synchronization part 442. The communication input/output part 411 notifies the content distribution server 16 of the delay time calculated by the delay time calculation part 443.
MITSUYA SHIGEAKI
BABA AKITSUGU
FUJISAWA HIROSHI
TAKECHI HIDE
KANETSUGU YASUAKI
HAMADA HIROYUKI
Tadashi Takahashi