Patent ID: 11921012
Assignee: SEIKO EPSON CORPORATION
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 1:
2. The measurement method according to claim 1, wherein
the correction data estimation step includes:
an interval specifying step of calculating a first peak and a second peak of the drift noise reduction data, and specifying a first interval before the first peak, a second interval between the first peak and the second peak, and a third interval after the second peak;
a first interval correction data generation step of generating first interval correction data by inverting a sign of the drift noise reduction data in the first interval;
a second interval correction data generation step of generating second interval correction data by adding, at or before a predetermined time point of the second interval, data obtained by rearranging the drift noise reduction data before the first peak in a reverse order after the first peak and line data obtained by multiplying a line passing through the first peak and the second peak by −2, and adding, at or after the predetermined time point of the second interval, data obtained by rearranging the drift noise reduction data after the second peak in the reverse order before the second peak and the line data;
a third interval correction data generation step of generating third interval correction data by inverting the sign of the drift noise reduction data in the third interval; and
a correction data generation step of generating the correction data by adding the first interval correction data, the second interval correction data, and the third interval correction data.