Patent ID: 8516291

Claim:
An information processing apparatus including a data transmission device, and a data reception device that is connected to the data transmission device and that receives data output from the data transmission device, wherein: the data transmission device comprises: a reference clock generation unit to generate a reference clock; a selection circuit to input transmission target data and phase adjustment data, and to select one of the transmission target data and the phase adjustment data; and a transmission data synchronization output circuit to output the data selected by the selection circuit as transmission data in synchronization with the reference clock; and the data reception device comprises: a clock phase adjustment circuit to input the reference clock, and to output a delayed clock obtained by delaying a phase of the reference clock on the basis of a clock phase adjustment value; a reception data output unit to input the transmission data, and to output the input transmission data as reception data in synchronization with the delayed clock; a data adjustment circuit to input the transmission data, and to output adjustment target reception data obtained by delaying the transmission data on the basis of a data phase adjustment value; an adjustment reception data output unit to input the adjustment target reception data, and to output the input adjustment target reception data as adjustment reception data in synchronization with the delayed clock; and a comparison unit to input the reception data and the adjustment reception data, to compare the reception data and the adjustment reception data, and to output the data phase adjustment value on the basis of a result of comparison indicating whether the reception data corresponds to the adjustment reception data.