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AssigneesAutomobiles Peugeot, Automobiles Citroen, Regie Nationale des Usines Renault
InventorsJean-Luc Lecoco, Pierre Magne
Estimating the term…
This device in which the elements are linked by two information transmission lines (2, 3) and each of which includes information sending and reception circuits (4, 5), linked to a protocol handler (6), is characterized in that the reception circuit (5) of each element (1) comprise three comparators (7, 8, 9), a first comparator (7) receiving the signals transiting on the two lines (2, 3), a second comparator (8) receiving the signals transiting on a line (2) and a third comparator (9) receiving the signals transiting on the other line (3) and, interposed between the output of these comparators (7, 8, 9) and the information input (RC) of the handler (6), a circuit (10) for selective connection of the output (R0) of the first comparator (7) or of the output of a circuit for logically combining the outputs (R1, R2) of the second and third comparators (8, 9), to the input of the protocol handler (6), under the control of the latter as a function of the state of the signals present at its input, in order to permit operation of the device in normal differential mode and in degraded mode on the basis of information transiting on one of the lines.
A device for differential-mode information transmission between at least two elements of a motor vehicle, linked by two information transmission lines, each of the elements comprising information sending means and information reception means, linked to a protocol handler, wherein the reception means of each element comprise a first comparator receiving as input signals transiting on the two information transmission lines, a second comparator receiving as input signals transiting on one information transmission line and a third comparator receiving as input signals transiting on the other information transmission line and, interposed between output of the first, second and third comparators and an information input of the protocol handler, means for selective connection of an output of the first comparator or of an output of means for logically combining outputs of the second and third comparators, to the information input of the protocol handler, under control of the protocol handler as a function of the state of signals present at the information input of the protocol handler, in order to permit operation of the device in normal differential mode and in degraded mode on the basis of information transiting on one of the transmission lines.
An apparatus for differential-mode information transmission, comprising:
Dependencies are inferred from the claim text.