PING PONG TRANSMISSION DEVICE

摘要

PROBLEM TO BE SOLVED: To realize high performance and downsizing of a frequency region equalizer circuit at a low cost with respect to a configuration for digital signal processing at a line termination section for ping pong transmission. SOLUTION: An IIR filter 6 provided with a buffer register 8 is employed for a frequency equalizer 3 and using the IIR filter for a plurality of number of times via the buffer register can configure the equalizer with a steep amplitude characteristic having small hardware so as to realize the waveform equalizer with high performance at a low cost.