Data retransmitting system

Details Data retransmitting system Data retransmitting system

1983-03-07

1985-10-22

Smith, Jerry

Excavating

G06F 1100

Patent

active

045492972

ABSTRACT:
A data retransmitting system in which data is transmitted in data frames having a predetermined length and an answer signal is transmitted back from the signal receiving side upon reception of each data frame. A measuring frame is transmitted from the signal transmitting side prior to the start of data transmission. A transmission delay time is measured from a time difference between transmission of the measuring frame and reception of an answer signal to said measuring frame from the signal receiving side according to the transmission delay time, a frame length for each data frame and a monitoring time which elapses the time instant that each frame has been transmitted until the corresponding answer signal is detected. When, with respect to each data frame having the frame length thus determined, no answer signal is detected within said monitoring time thus determined the data is retransmitted.

REFERENCES:
patent: 3754211 (1973-08-01), Rocher et al.

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