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Transmission and reception synchronization device for a communication network station particularly for automotive vehicles
| Details |
Inventors: Malville, Joel; Herbault, Patrick; Abou, Bruno;
Assignee: Automobiles Peugeot (Paris, FR); Automobiles Citroen (Neuilly/Seine, FR)
Primary Examiner: Kuntz; Curtis
Assistant Examiner: Bocure; Tesfaldet
Attorney, Agent or Firm: Burns, Doane, Swecker & Mathis
This device includes a signal processor (30,35,36,37,38,47,49) to generate sampling signals of information present on a network, and a selection circuit (43) for loading the signal processor with at least one synchronization value (44, 45) corresponding to at least one propagation time for information in the network to synchronize the station according to the transmission characteristics of the network. |
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DETAILED DESCRIPTION We claim: 1.
A transmission and reception synchronization device for stations of a communication network accessed by the stations according to be a bit-by-bit arbitration method, each station including: input means for inputting information from a network to said communication network station; means for generating sampling signals of information on the network; and means for loading the generating means with at least one synchronization value corresponding to at least one propagation time on the network to synchronize the station according to the transmission characteristics of the network by shifting the sampling signals of the generating means, said synchronization value corresponding to the propagation time for a rising edge, a falling edge or the average propagation time for the rising or falling edges of said information on the network.
2.
A device according to claim 1, wherein said loading means includes selection means for selecting one of two synchronization values according to whether the information present on the network has said rising information edge or said falling information edge, wherein a first of the synchronization values corresponds to the propagation time for a rising information edge on the network and a second of the synchronization values corresponds to the propagation time of a falling information edge on the network.
3.
A device according to claim 1, wherein said loading means includes means for selecting one of said rising information edge and said falling information edge used for the synchronization.
Description:
BACKGROUND OF THE INVENTION 1.
Field of the Invention The present invention relates to a transmission and reception synchronisation device for a communication network station in particular for automotive vehicles.
2.
Description of Related Art In a communication network, when different stations are interconnected, they carry out communication operations locally, according to their own local clock.
These local clocks provide time references to interpret communication frames in reception and to generate communication frames in transmission
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Image Analysis 
