Patent ID: 11863212
Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A signal processing device comprising:
a processor; and
a memory having instructions that, when executed by the processor, cause the signal processing device to perform operations comprising:
converting a first signal that is a time domain signal into a second signal that is a frequency domain signal in response to reception of the first signal, the first signal containing noise superimposed on a broadcast electric signal derived from a broadcast electromagnetic wave, the noise having peaks of amplitude at regular frequency intervals in the frequency domain;
calculating a frequency interval between the peaks of the noise in the frequency domain based on a correlation of the second signal;
determining a frequency shift amount in the frequency domain based on the frequency interval; and
shifting a frequency of the second signal by the frequency shift amount to create a frequency-shifted signal.