Patent Document ID: 20080013645
Application ID: 11777181
Patent Flag: 0

Claim One:
1. A data transfer device comprising: a first circuit; a second circuit; and a differential transmission line; wherein the first circuit includes a serializer to convert a parallel signal into a serial signal, a pseudo-random number generator to generate pseudo-random patterns in accordance with a predetermined algorithm and an output buffer to selectively output the serial signal to the differential transmission line as an input signal thereto; the second circuit includes a deserializer to convert the serial signal into the parallel signal, an input buffer to amplify signals inputted from the differential transmission line and supply the signals to the deserializer and a comparator; the comparator compares the pseudo-random patterns inputted from the differential transmission line with patterns generated in accordance with the predetermined algorithm to produce comparison result thereof; and a pre-emphasis amount of the output buffer being adjusted in accordance with the comparison result.