Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – Transmission control
Patent
1996-01-03
1998-11-24
Dung, Dinh C.
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
Transmission control
39520052, 395830, 395849, 395860, 395878, 701 36, H04J 314
Patent
active
058419837
ABSTRACT:
In a communication system which ensures that a slave device can successively transmit a plurality of answer messages without causing collision with another message on a communication line, in response to a request message from a diagnosis tester, control devices transmit their answer messages in the order of their priorities, with a communication blank duration provided between answer messages. If any one of the control devices has first and second answer message to be transmitted successively, the control device transmits the second answer message a communication blank duration after completing transmission of the first answer message. The control device can thereby transmit the first and second answer messages before a control device of a lower priority starts to transmit its answer message. Message collision on the communication line is thus avoided.
REFERENCES:
patent: 4547850 (1985-10-01), Genma
patent: 4561092 (1985-12-01), Shaver
patent: 5349690 (1994-09-01), Frame et al.
patent: 5485147 (1996-01-01), Jaffe et al.
patent: 5526355 (1996-06-01), Yang et al.
Road Vehicles--Diagnostic systems--part 2, ISO International Standard, ISO 9141-2 1994.
Abe Takahide
Hyodo Masahito
Takaba Katsumi
Dung Dinh C.
Nippondenso Co. Ltd.
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