Apparatus, method and program

By linearly approximating the parameters of the response waveform, the noise problem in the output signal of the analog-to-digital conversion circuit is solved, and high-precision signal processing and component detection are achieved.

CN122374660APending Publication Date: 2026-07-10ADVANTEST CORP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ADVANTEST CORP
Filing Date
2024-10-09
Publication Date
2026-07-10

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Abstract

The solution of the present invention comprises: an acquisition unit that acquires a response waveform output from a component in response to an input signal; and an identification unit that identifies the parameters of an exponential function that approximates the response waveform. The identification unit identifies the parameters of the exponential function by performing a linear approximation of the relationship between the logarithm of the signal value of the response waveform and time. The identification unit calculates the parameters a and b by fitting the logarithm Log(f) of the signal value f of the response waveform and time t using the relationship Log(f) = a - bt using the least squares method, and identifies the parameters A and T of the exponential function f = A·exp(-t / T) as A = EXP(a) and T = 1 / b.
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