Patent ID: 7538752

Claim:
A driving circuit, suitable for driving a display panel of a displaying apparatus, comprising a timing controller and a source driver array, wherein the source driver array has a plurality of input ends to receive a plurality of position code signals and comprises a plurality of source drivers, the timing controller is coupled with each of the source drivers and provides a display timing data to each of the source drivers, each of the source drivers is correspondingly coupled to one of the input ends of the source driver array and correspondingly receives one of the position code signals, each of the position code signals with respect to each of the source drivers is determined according to a driving sequence of the source drivers in the source driver array, the position code signal is used as a reference for a control signal of data distribution of a display data signal in the display timing data, and then being transmitted to the display panel, all of the position code signals being not provided by the source drivers, and each of the source drivers comprising a start pulse generating circuit, used to receive the position code signal, generate a start pulse signal according to the received position code signal, so as to serve as the control signal of data distribution of the display data signal in the display timing data, wherein the start pulse generating circuit comprises: a start-code detection circuit, used to receive the display timing data transmitted from the timing controller, and detect whether or not a horizontal latch signal appears in the display timing data, after the horizontal latch signal has been detected, continuously to detect whether or not a start code appears in the display data signal of the display timing data, so as to generate an enabling signal after detecting the start code; a synchronous counter, coupled to the start-code detection circuit, for receiving the enabling signal, the horizontal latch signal and an operation clock signal, wherein the horizontal latch signal resets a counting value of the synchronous counter to be 0, and starting to count according to the enabling signal; a decoding circuit, for receiving the position code signal, and accordingly generating a source-driver encoding signal (POS); and a digital comparator, coupled to the synchronous counter and the decoding circuit, so as to compare the source-driver encoding signal (POS) with the counting value of the synchronous counter, wherein if the value of the source-driver encoding signal is equal to the counting value, then the display data signal in the display timing data starts to be received and thus the operation frequency of the source driver is enhanced.