Signal transmission system with an error control technique

Details Signal transmission system with an error control technique Signal transmission system with an error control technique

1977-08-19

1979-04-10

Atkinson, Charles E.

Communications: electrical

Digital comparator systems

G08C 2502

Patent

active

041491424

ABSTRACT:
A signal transmission system embodying this invention which can control errors comprises a selective automatic repeat request (ARQ) system for controlling errors occurring in transmission of data on telephone data communication channels. With this selective ARQ system, an error-controlling signal conducted through a backward channel does not contain a check bit for detection or correction of errors, thereby preventing a time loss which might occur if a error-control signal was repeatedly issued between the transmission and receiving sides. The subject signal-transmitting apparatus is adapted to be used in a static image transmission having a large amount of data and has such a circuit arrangement as attains the efficient transmission of data and the display of an error-free image of good picture quality.

REFERENCES:
patent: 3641494 (1972-02-01), Perrault et al.
patent: 3646518 (1972-02-01), Weinstein
patent: 3671945 (1972-06-01), Maggio, Jr.
patent: 3676846 (1972-07-01), Busch
patent: 3893072 (1975-07-01), D'Antonio et al.
patent: 3956589 (1976-05-01), Weathers et al.
patent: 3979719 (1976-09-01), Tooley et al.

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