Abstract: A drive circuit 1000 is provided with an input terminal and an output terminal configured to be coupled to an external device 2000; a drive signal generation circuit 400 configured to use a synchronizing signal that is input from the external device 2000 via the input terminal to perform signal generation processing to generate a drive signal that drives an electro-optical panel 10; a state signal generation circuit 510 configured to generate a state signal indicating an operating state of the drive signal generation circuit 400; a return signal generation circuit 520 configured to generate a return signal obtained by superimposing the state signal on the synchronizing signal; and the output circuit 2000 configured to output the return signal from output terminals 581 and 582 to the external device 2000.

Abstract: A drive circuit 1000 is provided with an input terminal and an output terminal configured to be coupled to an external device 2000; a drive signal generation circuit 400 configured to use a synchronizing signal that is input from the external device 2000 via the input terminal to perform signal generation processing to generate a drive signal that drives an electro-optical panel 10; a state signal generation circuit 510 configured to generate a state signal indicating an operating state of the drive signal generation circuit 400; a return signal generation circuit 520 configured to generate a return signal obtained by superimposing the state signal on the synchronizing signal; and the output circuit 2000 configured to output the return signal from output terminals 581 and 582 to the external device 2000.

Abstract: A driver includes: an interface unit that receives image data; an error detection unit that performs error detection on the received image data; and a drive circuit that drives an electro-optical panel based on the image data. The driver outputs a result of the error detection to an external device.

Abstract: A driver includes: an interface unit that receives image data; an error detection unit that performs error detection on the received image data; and a drive circuit that drives an electro-optical panel based on the image data. The driver outputs a result of the error detection to an external device.

Abstract: A driver includes a display memory that stores display data, and a control unit that writes the display data in the display memory. The control unit accepts image region information for designating an image region in which an image corresponding to the display data is to be displayed within a display region of a display panel, and instruction information for giving an instruction to display of a frame region which surrounds the image region in the display region, and performs frame write processing for writing given tone data at an address of the display memory corresponding to the frame region, based on the image region information.

Abstract: A driver includes a display memory that stores display data, and a control unit that writes the display data in the display memory. The control unit accepts image region information for designating an image region in which an image corresponding to the display data is to be displayed within a display region of a display panel, and instruction information for giving an instruction to display of a frame region which surrounds the image region in the display region, and performs frame write processing for writing given tone data at an address of the display memory corresponding to the frame region, based on the image region information.

Abstract: A grayscale voltage generation circuit includes an input-side resistor circuit including first to J-th (J is a positive integer) input voltage division nodes at which the voltage between first and second power supply lines is divided by (J+1) resistor elements connected in series between the first and second power supply lines and having fixed resistance values, first to J-th voltage follower circuits to which the voltages of the first to J-th input voltage division nodes are respectively supplied, an output-side resistor circuit connected between the power supply lines and including first to J-th output voltage division nodes at which the voltage between both ends of the power supply lines is divided, the output voltage division nodes being driven by voltage follower circuits, and a grayscale voltage select circuit which outputs as the grayscale voltages L (J<L<K, L is an integer) types of voltages selected from voltages of K (J<K, K is an integer) resistance division nodes at which the voltage betw

Abstract: A gamma correction circuit is provided. Gamma correction resistors on an input side are coupled to each other in series between input voltages. The gamma correction resistors around the input voltages are variable resistors and the other resistors are fixed resistors. Gamma correction resistors on an output side are coupled to each other in series between the input voltages. The gamma correction resistors in the vicinity of the input voltages are variable resistors and the other resistors are fixed resistors. When the setting of gray scale voltages is changed by changing the gamma correction resistors on the input side, the gamma correction resistors on the output side are simultaneously changed. Thereby, the potentials of an input side and output side of an operational amplifier are kept identical to each other such that overcurrent does not flow between the gamma correction resistor and the operational amplifier.