Narrowcastcast content data transmission device, narrowcastcast content data reception device, narrowcast broadcasting system

摘要

To reliably transmit and receive content data at low cost by using a broadcast wave between a data transmission device and a data reception device.A content data IP converting unit converting contents data into IP data by division and converting the contents data into IP data, and narrowcast broadcasting for assigning an identifier indicating that the divided IP data is a part of the content data for narrowcast broadcasting A protocol converting section 30 for converting the IP data into a broadcast broadcasting wave so as to be additionally mixable with the broadcasting wave, a mixed broadcasting wave generating section for generating a mixed broadcasting wave by additionally mixing the protocol converted data into the broadcasting wave A digital signage system (narrowcast broadcasting system) comprising a data transmitting apparatus 100 including a data transmitting apparatus 100 and a mixed data broadcasting wave outputting section 50 for outputting a mixed broadcast wave to the outside, and a data receiving apparatus 200 corresponding to the data transmitting apparatus 100, 300.BACKGROUND OF THE INVENTION