BROADCASTING DIGITAL DATA RECEIVING SYSTEM INCLUDING MASTER DIGITAL TERMINAL AND AT LEAST ONE SLAVE DIGITAL TERMINAL FOR REDUCING PIRACY AT SMART CARD OR DIGITAL TERMINAL LEVEL AND PREVENTING PROLONGATION OF PHYSICAL LINK BETWEEN TWO DIGITAL TERMINALS

摘要

PURPOSE: A broadcasting digital data receiving system including a master digital terminal and at least one slave digital terminal is provided to reduce piracy at a smart card or digital terminal level and prevent prolongation of a physical link between two digital terminals according to a telephone network or the Internet. CONSTITUTION: A broadcasting digital data receiving system(5) includes a master digital terminal(1) and at least one slave digital terminal(2) that is connected to the master terminal through a link and receives protected digital data. The slave digital terminal accesses the protected digital data only when information that is received by the master digital terminal and required for accessing data is transmitted to the slave digital terminal through the link in a predetermined deadline.