Differential data transferring system and method using three level voltages

A differential data transferring method for transferring first, second, and reference transfer data signals through first and second transfer line sets to generate first, second, and reference output data signals, in which the first transfer line set includes a first plus transfer line and a first minus transfer line and the second transfer line set includes a second plus transfer line and a second minus transfer line, the differential data transferring method comprising:

• transmitting the first, second, and reference transfer data signals on the first and second transfer lines sets, the transmitting comprising:
• applying a first middle voltage level to a selected one of the first plus transfer line and the first minus transfer line based on the first and the reference transfer data signals,
• applying one of a first high voltage and a first low voltage to the other of the first plus transfer line and the first minus transfer line based on the first and the reference transfer data signals,
• applying a second middle voltage level to a selected one of the second plus transfer line and the second minus transfer line based on the second and the reference transfer data signals,
• applying one of a second high voltage and a second low voltage to the other of the second plus transfer line and the second minus transfer line based on the second and the reference transfer data signals,
• wherein the first middle voltage is between the first high voltage and the first low voltage, and wherein the second middle voltage is between the second high voltage and the second low voltage;
• and
• receiving the first, second, and reference transfer data signals transmitted on the first and second transfer lines sets, the receiving comprising:
• generating the first, second and reference output data signals,
• wherein the first output data signal is generated based on the voltages applied to the first plus transfer line and the first minus transfer line, and the second output data signal is generated based on the voltages applied to the second plus transfer line and the second minus transfer line, and the reference output data signal is generated based on a first dividing voltage and a second dividing voltage, and
• wherein the first dividing voltage is generated by dividing the voltage between the first plus transfer line and the first minus transfer line, and the second dividing voltage is generated by dividing the voltage between the second plus transfer line and the second minus transfer line.