COPY-PROTECTION CIRCUIT FOR TELECOMMUNICTION DEVICES USING HALL SENSORS

摘要

The present invention relates to an unclonable function circuit of a communication device using a hall sensor. When a heat emitting plate of the communication device is separated from a printed circuit board (PCB), the unclonable function circuit cuts off the power supplied to the communication device to prevent cloning. According to the present invention, the unclonable function circuit includes: a power supply block which supplies power to a communication device; a communication device which operates with the power supply provided from the power supply block; a watchdog processor which is arranged on the communication device to control the power supply connection provided from the power supply block to the communication device according to whether the heat emitting plate is separated from the PCB of the communication device or not; and a standby power supply unit which drives the watchdog processor.