Patent ID: 8310900

Claim:
A time information obtaining device comprising: a reception section to receive a standard time radio wave; an input waveform data generation section to generate input waveform data having one or more unit of time length, based on data having the unit of time length, wherein the data comprises a value which is obtained by sampling a signal including a time code output from the reception section in a predetermined sampling period and by each sample point being described by a plurality of bits, and wherein the unit of time length is a time corresponding to one code which configures the time code; an estimated waveform data generation section to generate a plurality of pieces of estimated waveform data, wherein the estimated waveform data comprises the value in which each sample point is described by the plurality of bits, the estimated waveform data has the same time length as the input waveform data, the estimated waveform data comprises at least one code which configures the time code, and a waveform of the estimated waveform data is sequentially shifted by a predetermined sample; a correlation value calculation section to calculate a correlation value of the input waveform data and each of the plurality of pieces of estimated waveform data; a correlation value comparison section to compare the correlation value calculated by the correlation value calculation section so as to calculate an optimal value; and a control section to specify a beginning position of a second in the time code based on the estimated waveform data indicating the optimal value.