Patent ID: 11922898
Assignee: LAPIS TECHNOLOGY CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 6:
7. A source driver connected to a display panel that has a plurality of data lines, a plurality of gate lines, and a plurality of pixel parts disposed at respective intersections of the plurality of data lines and the plurality of gate lines and arranged in a matrix,
wherein the source driver is one of a plurality of source drivers arranged along an extending direction of the plurality of gate lines,
wherein the source driver receives a video data signal indicating a video to be displayed in the display panel from a display controller and supplies a gradation voltage signal to be outputted to the plurality of pixel parts through the plurality of data lines based on the video data signal,
wherein the source driver includes:
a setting register that stores setting data regarding an operation of the source driver;
at least one calculation circuit that performs calculation based on the setting data stored in the setting register to derive a setting value for the gradation voltage signal to be outputted;
a code value calculation unit that calculates an error detection code value corresponding to the setting value based on a calculation result of the at least one calculation circuit; and
a comparison unit that obtains the error detection code value calculated in other source drivers, compares the error detection code value calculated in the other source drivers with the error detection code value calculated by the code value calculation unit, and stores the comparison result in the setting register.