Arq equipped data communication system

Details Arq equipped data communication system Arq equipped data communication system

1983-06-14

1986-05-13

Atkinson, Charles E.

Excavating

371 5, G08C 2502, G06F 1110

Patent

active

045891117

ABSTRACT:
A data communication system having an automatic request for repetition ("ARQ") function shifts down its MODEM rate to a slower value when the number of trials of retransmission has reached a predetermined value. In the present system, the predetermined value is supplied from the receiver to the transmitter prior to transmission operation of data from the transmitter to the receiver, thereby allowing to maintain a high use rate of the transmission line without significantly decreasing the overall data transmission speed.

REFERENCES:
patent: 4149142 (1979-04-01), Kageyama et al.
patent: 4270205 (1981-05-01), DeShon
patent: 4390497 (1983-06-01), DeShon
Woodruff, Automatic and Adoptive System for Efficient Communication in Noisy Communication Line Environments, IBM Tech. Disclosure, 2/82, vol. 24, No. 9, pp. 4627-4629.

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