Patent ID: 8390604
Filing Date: 2013-03-05
Classification: G09G

Abstract:
1. A differential signaling system comprising: a plurality of pairs of first wirings and a second wirings connected to sending ends and receiving ends as differential signal lines; and a plurality of display data driving circuits connected to the plurality of pairs of first wirings and second wirings, each plurality of display data driving circuits including a programmable compensation circuit connected to a termination resistor in parallel installed between the first and second wirings, the plurality of programmable compensation circuits including a plurality of switches configured to receive an input digital control signal, first n resistors connected between a source electrode of each of the switches and the first wiring, and second n resistors connected between a drain electrode of each of the switches and the second wiring, each bit of the input digital control signal being configured to vary the impedance of the programmable compensation circuit, wherein an impedance of each of the display data driving circuits is adjusted by the corresponding programmable compensation circuit based on the impedance of a corresponding pair of first wiring and second wiring.