Pulse or digital communications – Repeaters – Testing
Patent
1988-09-23
1993-11-02
Chin, Stephen
Pulse or digital communications
Repeaters
Testing
375121, H04B 138
Patent
active
052590003
ABSTRACT:
In a MODEM having modulation and demodulation circuits and a circuit for controlling the modulation and demodulation, a modulator-demodulator apparatus includes a register for accepting a macro-instruction from an external source; a circuit for interpreting and executing the macro-instruction; and a circuit for outputting a response to the macro-instruction, whereby the MODEM is controlled in response to the macro-instruction accepted from the outside source. The modulator-demodulator apparatus is suitably integrated over a single semiconductor substrate.
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YM3418 MD96FX (9600 bps Fax Modem Lis) printed in Japan 1988 Jan.
Ishihara Yukihito
Kojima Yasuyuki
Shimanuki Takeshi
Takaoka Kazuhiko
Yokosuka Yasushi
Chin Stephen
Hitachi , Ltd.
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