Patent ID: 8619089

Claim:
A data transfer circuit that transfers a first kind of data stored in an external memory circuit, the data transfer circuit comprising: an internal memory circuit that is capable of, by an external circuit, writing and/or rewriting a second kind of data including information for one region as a transfer source in the external memory circuit and another region as a transfer destination in the external memory circuit; a transfer circuit that transfers the first kind of data; and a control circuit that makes the transfer circuit transfer the first kind of data stored in the one region to the other region based on the second kind of data, a first data of the second kind of data including at least link information that links to a second data of the second kind of data, the link information including a link to image data for transfer upon completion of the transfer of the first kind of data, the control circuit controlling the transfer circuit based on the link information, and the control circuit receiving a trigger signal input, and controlling transfer timing of the transfer circuit based on the trigger signal input.