Multiplex communications – Wide area network – Packet switching
Patent
1989-10-18
1992-06-02
Olms, Douglas W.
Multiplex communications
Wide area network
Packet switching
370 852, 370 853, 370 67, 370 941, H04J 302
Patent
active
051193710
ABSTRACT:
A multipath transmission system for an automobile according to the present invention comprises a plurality of multiplex transmission units connected in parallel with each other to one common bus. Each transmission unit is assigned to one of groups in which various devices attached to the automobile are classified. The transmission unit includes a sending circuit for transmitting the multiple signals from the devices in the group concerned to the other units through the bus. The system further comprises a power source for always applying electric power to the sending circuit of at least one of the multiplex transmission units. Only that multiplex transmission unit to which the electric power is always applied is provided with a bias circuit which sets the potential of the multiple signals on the bus when the multiple signals are supplied from the sending circuits of any multiplex transmission unit to the bus.
REFERENCES:
patent: 4429384 (1984-01-01), Kaplinsky
patent: 4656471 (1987-04-01), Hanss et al.
patent: 4860006 (1989-08-01), Barall
patent: 4939725 (1990-07-01), Matsuda et al.
"Multiplex Technology"; Feb. 29-Mar. 4, 1988 Issue; Society of Automotive Engineers, Inc., Warendale, Pa.; Article entitled Chrysler Collision Detection (C.sup.2 D.TM.) Bus Interface, Integrated Circuit User Manual; R. E. Fassnacht and W. H. Madden; pp. 1-18 (particularly p. 2).
Himono Yusaku
Inoue Kiyoshi
Ito Yuichi
Michihira Osamu
Nanpo Yukio
Hom S.
Mazda Motor Corp.
Olms Douglas W.
The Furukawa Electric Co. Ltd.
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