STANDBY POWER DEVICE OF LOW POWER OF DIGITAL TV USING SMART CARD

摘要

PURPOSE: A standby power device of low power of digital TV using smart card is provided so that the anxiety of hacking can be solved and simultaneously power loss can be prevented by minimizing the standby power through the principle of the smart card. CONSTITUTION: A standby power device of low power of digital TV using smart card includes several devices. When a televiewer inserts a smart card to a smart card reader(20) of a digital broadcasting STB(Set-Top-Box) system in order to watch the DTV(digital TV), the smart card reader(20) detects the inserting state of the smart card with DTV, and thereafter outputs the detected signal to a microcomputer(30). That is, when inserting the smart card, the smart card reader(20) recognizes the smart card by communicating it to an ICAM through a smart card interface, thereafter transmits each data I/O, clocks and the smart card insertion detecting signal(Detect) to a descrambling block and outputs the card insertion detecting signal to the microcomputer(30). The microcomputer(30) controls a main power switching unit(40) of STB system according to the card insertion signal detected from the smart card reader(20). Therefore, in a state of inserting the smart card, the main power(AC) is provided to the STB system.