Excavating
Patent
1991-12-18
1995-07-04
Nguyen, Hoa T.
Excavating
371 32, G06F 1110, G08C 2502
Patent
active
054307384
ABSTRACT:
An information transmission system includes a base station in which a digital information signal is divided into packets of a predetermined amount of information of a same type, a packet identification signal is inserted into each of the packets, the packet identification signal indicating the total number of consecutive packets carrying packet information of the same type and a packet number specifying an associated packet among the consecutive packets, and the packets are transmitted. The system includes a relay station, in which diagnosis data of an erred information signal is stored in a memory, and the diagnosis data is transmitted to the base station in response to a diagnosis return instruction sent from the base station. According to a further aspect of the invention, an error correction code is added to each packet and an error correction code for an identification code including a relay station pointing code is also added in the base station. In relay stations, error correction of the identification code is performed before the error correction of the packets.
REFERENCES:
patent: 4507782 (1985-03-01), Kunimasa et al.
patent: 5159452 (1992-10-01), Kinoshita et al.
Nguyen Hoa T.
Pioneer Electronic Corporation
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