Mitsuo Kakuishi

Digital subscriber loop interface unit

Transversal filter for use in a digital subscriber line transmission interface

Received data adjusting device

Adaptive echo canceller

Echo canceller and waveform-distortion compensation device

Hybrid circuit having a two-wire/four-wire converting function

Jitter compensating device

Data receiving device for reproducing a received symbol from a received data signal

Digital modulator and digital demodulator

Signal processing system for use in a digital signal clock changing apparatus