Toru Kosugi

Digital cross connect system

Method and apparatus for path trace check

Transmission quality monitoring system for a digital communication network

System for controlling a change of sequence order of channel data

Bipolar with eight-zeros substitution and bipolar with six-zeros substitution coding circuit

Digital data multiple conversion system for converting data having a frequency to data having another frequency by a digital stuffing method

More frequency converter for digital data using the digital stuffing procedure.

Coding with bipolar eight zero and six follow substitution.

Mehrfrequenzwandler für digitale Daten unter Verwendung des digitalen Stopfverfahrens. Multi-frequency converter for digital data using the digital stuffing procedure.

Kodierschaltung mit bipolarer acht- und sechsnullfolgensubstitution. Encoding with bipolar eight- and six zero sequence substitution.