Telephone transmission system comprising digitally processing fr

Details Telephone transmission system comprising digitally processing fr Telephone transmission system comprising digitally processing fr

1976-09-28

1978-07-25

Claffy, Kathleen

Boots, shoes, and leggings

364724, H04J 118

Patent

active

041031105

ABSTRACT:
The invention relates to telephone transmission systems in which frequency multiplexing is carried out by digital processes. It consists in substituting to a computation step of an analytical signal a computation step of a much simpler complex signal. The ultimate signal obtained is not compatible with standard multiplexing apparatus, but may nevertheless be transmitted along ordinary channels.

REFERENCES:
patent: 3605019 (1971-09-01), Cutter
patent: 3891803 (1975-06-01), Daguet
patent: 3971922 (1976-07-01), Bellanger

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