Error detection/correction and fault detection/recovery – Pulse or data error handling – Digital data error correction
Patent
1997-04-09
1999-08-10
Grant, William
Error detection/correction and fault detection/recovery
Pulse or data error handling
Digital data error correction
714746, 714747, 714749, 370216, 370245, G08C 2502
Patent
active
059352671
ABSTRACT:
Transmission and reception nodes are connected to a communication network to be controlled with respect to time according to bus time as time information shared therebetween. The transmission node periodically transmits data while keeping a predetermined free period of time. The reception node decides normality of data received. At detection of abnormality in reception, the reception node transmits during the free period of time a re-transmission request signal to the transmission node with specification of information identifying the bus time of the abnormal data reception. On receiving the re-transmission request signal, the transmission node obtains the data transmitted at the bus time identified by the information specified by the re-transmission request signal and then re-transmits the data during the free period of time to the reception node.
REFERENCES:
patent: 5426638 (1995-06-01), Maruyama et al.
patent: 5497374 (1996-03-01), Maruyama et al.
Fuji Photo Film Co. , Ltd.
Grant William
Marc McDieunel
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