Patent ID: 9559794
Date: 2017-01-31
CPC Classifications: H04B

Claim:
1. A signal detection apparatus comprising: at least one hardware processor executing instructions for performing the following: a signal receiver receiving an external signal; an Analog to Digital (A/D) signal processor determining whether the received signal is an abnormal signal based on a plurality of signal profiles having different signal characteristics, and obtaining the abnormal signal if, as a result of the determination, it is determined that the received signal is the abnormal signal; and a user interface displaying the abnormal signal, wherein the A/D signal processor comprises: a signal converter converting a signal sample, obtained by digitally converting the signal received by the signal receiver, into a digital signal in a time domain and a digital signal in a frequency domain; a profile matcher determining whether an output signal of the signal converter is an abnormal signal depending on whether the output signal matches any of plurality of signal profiles having the different signal characteristics; and a signal acquisitor obtaining the abnormal signal from the output signal of the signal converter, wherein the profile matcher comprises: a signal profile group storing the plurality of signal profiles having the different signal characteristics; a profile selector selecting one or more from among the plurality of signal profiles; and a matching processor determining whether the output signal matches any of the selected signal profiles by comparing the output signal of the signal converter with the signal profiles selected by the profile selector in response to the output signal of the signal converter, and wherein the matching processor comprises: an analog processor converting the output signal of the signal converter into an analog signal; and a first matcher determining whether a characteristic of the output signal of the analog processor matches a characteristic of any of the selected signal profiles by comparing the output signal of the analog processor with the signal profiles selected by the profile selector.