DEVICE AND A METHOD FOR CONTROLLER TRANSMISSION POWER IN A HUMAN BODY COMMUNICATION SYSTEM WHEN A PORTABLE TERMINAL PERFORMS COMMUNICATION WITH A PORTABLE DEVICE THROUGH HUMAN BODY COMMUNICATION

摘要

PURPOSE: A device and a method for controller transmission power in a human body communication system are provided to improve a communication quality and reduce power consumption by varying the transmission power according to currents among devices to be communicated.;CONSTITUTION: A voltage manager(210) determines whether transmission power is varied by using output voltage according to variable current when human body communication is performed. The voltage manager varies the transmission power according to a determination result. If the number of digital signals is bigger than a predetermined number, the voltage manager determines that average output voltage is higher than a threshold value. If the number of digital signals is smaller than the predetermined number, the voltage manager determines that the average output voltage is lower than the threshold value.;COPYRIGHT KIPO 2010