Patent ID: 8433149

Claim:
An image transmitter for transmitting image data to a device connected by a data signal line, the image transmitter comprising: an image data retainer that stores the image data to be transmitted; a pixel value retainer that stores a pixel value read from the image data retainer; a subtraction processor that sequentially reads the pixel value of an adjacent pixel of the image data from the image data retainer, obtaining, every time the pixel value is read, data of a difference between the read pixel value and the pixel value retained in the pixel value retainer, and overwriting the pixel value retained in the pixel value retainer with the pixel value read from the image data retainer; a difference data converter that converts the difference data obtained by the subtraction processor to transmission data, wherein the closer the value of the difference data to 0, the smaller the number of signal changes when the transmission data converted by the difference data converter is expressed as a binary number; and a data transmitter that sequentially outputs a data signal expressing the transmission data as the binary number to the data signal line, the transmission data converted by the difference data converter.