Semiconductor device

Abstract

A semiconductor device is provided that includes a first memory storing a program, and a CPU configured to process an input signal in accordance with the program, wherein the CPU performs (a) processing of obtaining respective intensities of respective points of a frequency spectrum obtained by performing Fourier transform on a radar signal outside, input from (b) processing of unwrapping phase components of the respective points of the frequency spectrum and calculating variance to obtain respective variations of phase fluctuation of the respective points of the frequency spectrum, and (c) processing of determining that a human is present at a distance corresponding to a position of a frequency spectrum at which, among the respective points of the frequency spectrum, a respective intensity exceeds a first threshold and a respective variation of phase fluctuation exceeds a second threshold.

Dependencies are inferred from the claim text.