Patent ID: 8732345

Claim:
An apparatus comprising: a controlled device that includes a substrate, a first circuit that processes input image data, and a second circuit that processes output image data, a control device that includes a substrate that controls the first circuit and the second circuit; and a pair of connection devices that connect the controlled device and the control device, wherein the connection devices include a first terminal group connecting the first circuit and the control device and a second terminal group connecting the second circuit and the control device, one of the connection devices is located closer to an end than to a center of one of the substrate of the controlled device and the substrate of the control device, the first terminal group includes a first channel that connects the first circuit and the control device, and the second terminal group includes a second channel that connects the second circuit and the control device, each of the first terminal group and the second terminal group includes a control signal terminal group corresponding to channel control signals that are commonly included among signals transferred by the first channel and the second channel, and a transfer signal terminal group corresponding to signals other than the channel control signals, and the first channel and the second channel are channels included in a bus defined by a PCI-Express® interface specification.