ARQ transmission system

Details ARQ transmission system ARQ transmission system

1984-03-26

1986-11-11

Safourek, Benedict V.

Pulse or digital communications

Repeaters

Testing

371 32, 178 69R, H04L 116

Patent

active

046226826

ABSTRACT:
A facsimile communication system equipped with an ARQ function for transmitting data in the form of a block between a transmitter and a receiver through a transmission route having a relatively large time delay, such as a submarine cable and communications satellite, is provided. In the system, prior to transmission of image data, a time delay in transmission of data through a selected transmission route is measured and the number of bits of data block is determined in accordance with the thus measured time delay.

REFERENCES:
patent: 3878333 (1975-04-01), Shimizu
patent: 3879577 (1975-04-01), Progler
patent: 4149142 (1979-04-01), Kageyama et al.

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