PROCESSING CIRCUIT AND SIGNAL CORRECTION METHOD

摘要

A transmission circuit, mounted on a printed board and having attenuation characteristics, to attenuate an amplitude of a reception signal according to the attenuation characteristics, and to transmit the amplitude-attenuated reception signal, as an attenuation signal; and a correction circuit, mounted on the printed board and having correction characteristics, to attenuate an attenuation signal that has been received from the transmission circuit according to the correction characteristics, and to transmit the attenuation signal attenuated, as a correction signal are provided. The attenuation characteristics are such characteristics that the ratio of the amplitude of the attenuation signal to the amplitude of the reception signal decreases as the frequency of the reception signal increases. The correction characteristics are characteristics with which the ratio of the amplitude of the correction signal to the amplitude of the attenuation signal increases as the frequency of the attenuation signal increases.

主权项

1. A processing circuit mounted on a printed board, comprising:
a transmission circuit, mounted on the printed board and having first attenuation characteristics of attenuating an amplitude of a reception signal that has been received, to send out the reception signal that has been attenuated according to the first attenuation characteristics, as an attenuation signal; and a correction circuit, mounted on the printed board and having second attenuation characteristics of attenuating the attenuation signal that has been received from the transmission circuit, to transmit the attenuation signal that has been attenuated according to the second attenuation characteristics, as a correction signal, the first attenuation characteristics of the transmission circuit being characteristics with which a ratio of an amplitude of the attenuation signal to an amplitude of the reception signal decreases as a frequency of the reception signal increases, the second attenuation characteristics of the correction circuit being characteristics with which a ratio of an amplitude of the correction signal to an amplitude of the attenuation signal increases as a frequency of the attenuation signal increases.