Patent ID: 8457242

Claim:
A transmitter comprising: a resistor control unit that controls a connection of a termination resistor between first and second transmission lines; a protection unit that reduces first and second voltages, respectively, from the first and second transmission lines during a power-down mode; and a transmission unit to which the reduced first and second voltages are applied by the protection unit during the power-down mode, the transmission unit transmitting first and second signals through the protection unit during a power-on mode, wherein: the resistor control unit controls the connection of the termination resistor between first and second transmission lines by connecting the termination resistor between the first and second transmission lines when a transmission rate of the first and second signals is equal to or greater than a predetermined value, and wherein: the resistor control unit controls the connection of the termination resistor between first and second transmission lines by disconnecting the termination resistor from at least one of the first and second transmission lines when the transmission rate is less than the predetermined value.