Patent ID: 9215047
Filing Date: 2015-12-15
Classification: H03M,H04L,H04N

Abstract:
1. A signal processing device by use of wireless communication, comprising: a reception processing unit that performs reception processing of a received signal wirelessly; a signal recording unit that records the signal; a signal compression unit that compresses an information amount of the received signal; and a signal output unit that stores the received signal that has been compressed or outputs the received signal to an external device, wherein the signal compression unit divides a signal, obtained by frequency-transforming a wireless received signal, into a signal portion large in amplitude value and a non-signal portion small in amplitude value on a frequency spectrum, calculates a representative value based on a feature quantity of the non-signal portion and combines the signal portion and the representative value into a compressed signal; and a signal reproducing unit that restores the information amount of the compressed received wireless signal close to that of the received wireless signal, wherein the signal reproducing unit adds a first signal and a second signal to obtain a reproduced signal of the received signal, the first signal being obtained by way of inverse transform on frequency of the signal portion, the second signal having an amplitude on a time axis obtained from the representative value of the non-signal portion.