Patent ID: 7908419

Claim:
A data transfer control device that controls data transfer, the data transfer control device comprising: a link controller that analyzes a packet received from a host-side data transfer control device through a serial bus; and an interface circuit which generates interface signals and outputs the generated interface signals to an interface bus, a packet transferred from the host-side data transfer control device through the serial bus including a synchronization signal code field for setting a synchronization signal code, the synchronization signal code including a plurality of data bits, a first one of the plurality of data bits being set to indicate that a horizontal synchronization signal is active, and a second one of the plurality of data bits being set to indicate that a vertical synchronization signal is active, and the interface circuit generating the horizontal synchronization signal based on whether the first one of the plurality of data bits is set and the vertical synchronization signal based on whether the second one of the plurality of data bits is set.