Patent ID: 8139703
Filing Date: 2012-03-20
Classification: H03K,H03L

Abstract:
1. A data relay apparatus, comprising: a phase detection unit configured to detect a phase difference between a clock for a transmitter and a clock for a receiver, and generate a plurality of phase detection signals; a data relay control unit coupled to the phase detection unit, the data relay control unit configured to distinguish a difference in clock timing between the transmitter and the receiver in response to the plurality of phase detection signals, and output a relay data selection signal and a relay control clock; and a data relay unit coupled to the data relay control unit, the data relay unit configured to transmit data output from the receiver to the transmitter in response to the relay data selection signal and the relay control clock, wherein the clock for the transmitter includes a plurality of transmission driving clocks, a relay reference clock, and a transmission reference clock, and wherein the clock for the receiver includes a reception reference clock, and wherein the phase detection unit includes an edge trigger configured to detect the level of the reception reference clock at a rising edge of each of the plurality of transmission driving clocks and the relay reference clock.