SAMPLING METHOD AND SAMPLING DEVICE

PROBLEM TO BE SOLVED: To provide a sampling method applying the phase measurement. SOLUTION: This sampling device for repeatedly sampling a data signal 22 comprises a first sampling circuit 14 for sampling the data signal, a second sampling circuit 13 for sampling the clock reference 21 having the known periodic relationship with the data signal, with the known frequency F, a timing circuit 16 for securing the known time relationship between the sampling by the first sampling circuit and the sampling by the second sampling circuit, and a calculating circuit 19 for determining in which phase of the clock reference a sample value of the data signal is generated, on the basis of the information sampled from the clock reference and the known frequency F.