DATA TRANSMISSION APPARATUS CAPABLE OF PROVIDING A NEW CONTENTS PROJECTION METHOD, A DATA RECEIVING APPARATUS, A DATA TRANSMITTING AND RECEIVING SYSTEM, A DATA TRANSMISSION METHOD, A DATA RECEIVING METHOD, AND A DATA TRANSMITTING AND RECEIVING METHOD

摘要

PURPOSE: A data transmission apparatus, a data receiving apparatus, a data transmitting and receiving system, a data transmitting method, a data receiving method, and a data transmitting and receiving method are provided to safely transmit and receive the parameter used in the encryption of the contents stream, and are provided to synchronize the contents protection.;CONSTITUTION: A data transmission apparatus comprises a packet generator (110) and a transmitter (120). The packet generator generates the packet including the encryption information about the contents stream. The transmitter transmits the generated packet to the data receiving apparatus. The generated packet includes a first field indicating the identification information of the contents stream and a second field indicating the encryption parameter value of the contents stream.;COPYRIGHT KIPO 2013;[Reference numerals] (110) Packet generator; (120) Transmitter