Digital serial transmitter/receiver module

Details Digital serial transmitter/receiver module Digital serial transmitter/receiver module

1975-06-17

1977-07-26

Pitts, Harold I.

Telegraphy

Systems

Line-clearing and circuit maintenance

325 58, H04B 116

Patent

active

040384942

ABSTRACT:
A transmitter/receiver module which includes circuitry for receiving serial digital data in diphase non-return-to-zero (NRZ) format and for demodulating said data into a separate synchronizing signal, data signal and clock signal and which further includes circuitry for transmitting the received and modulated signal or other modulated signals input directly to the module, such /transmitting circuitry including means for modulating the clock signal, data signal and synchronizing signal into the prescribed diphase NRZ format for output through a transformer coupled transmission line. The module further includes an oscillator for realigning the clock signal received with the serial digital data.

REFERENCES:
patent: 3593140 (1971-07-01), Kaneko
patent: 3614622 (1971-10-01), Holsinger
patent: 3697690 (1972-10-01), Aaron
patent: 3742199 (1973-06-01), Lubarsky
patent: 3742360 (1963-06-01), Ragsdale
patent: 3747067 (1973-07-01), Fox
patent: 3863025 (1975-01-01), Gonsiewski
patent: 3872437 (1975-03-01), Cross
patent: 3903504 (1975-09-01), Rogers

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