Patent ID: 8610656

Claim:
A method of generating a frame start pulse signal for instructing driving of a specific function of a source driver in a source driver chip of a liquid crystal display apparatus, comprising: receiving, by the source driver chip, a clock signal CLK from a timing controller positioned external to the source driver chip; receiving, by the source driver chip, in a load signal activation step, a load signal LOAD for designating a starting point of a new reset signal; receiving, by the source driver chip, in a reset low maintaining step, a data input signal LV 0 among a plurality of data input signals used to be a reset recognition input signal, in a low state for a predetermined time period; receiving, by the source driver chip, in a reset high maintaining step, the data input signal LV 0 in a high state for three clocks or more after the reset low maintaining step; determining, by the source driver chip, whether the data input signal LV 0 is maintained in the high state for a predetermined clock or more in the reset high maintaining step; if the source driver chip determines that the data input signal LV 0 is maintained in the high state for the predetermined clock or more in the reset high maintaining step, generating, by the source driver chip, the frame start pulse signal in the source driver chip without the source driver chip receiving any frame start pulse signal from the timing controller; and if the source driver chip determines that the data input signal LV 0 is maintained in the high state for less than the predetermined clock in the reset high maintaining step, the frame start pulse signal is not generated in the source driver chip.