Abstract: A display controller includes a first memory, a second memory and an address controller. The first memory stores first extended display identification data (EDID). The second memory stores second EDID. The address controller sets a predetermined address to one of the first memory and the second memory. The memory set with the predetermined address allows a source device to read the corresponding EDID.

Abstract: A display controller includes a plurality of memories and an enable control circuit. Each of the memories stores one set of extended display identification data (EDID). The enable control circuit selects and enables one of the memories and disables the remaining memories to allow a source device to read the corresponding EDID stored in the enabled memory.

Abstract: An image processing method is provided. The image processing method, applied to a local computer for processing a first type image having a first size and a second type image having a second size, includes the following steps. The first type image is scaled by a first scaling ratio such that a scaled first type image has a third size. The scaled first type image having the third size is blended with the second type image having the second size. The first type image is received from a remote computer and the second type image is received from the local computer.