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US 6,476,948 B1Granted
Accurate synchronizing device
AssigneeThomson-CSF
InventorsYves Canal, Jean Chazelas, Daniel Dolfi, Paul Sergent
Life of this patent
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AssigneeThomson-CSF
InventorsYves Canal, Jean Chazelas, Daniel Dolfi, Paul Sergent
Estimating the term…
A synchronization device which synchronizes signals transmitted from a transmitter to receivers. The transmitter includes a generator for generating a synchronization signal having a recurrence period substantially equal to the minimum resolution of the journey time between the transmitter and the receiver. Each receiver includes a controllable delay for delaying the synchronization signal and a synchronization loop downstream of the delay. The synchronization loop includes a semi-reflecting plate, a correlator and a device for slaving the delay depending on the correlation. A signal received by the receiver is synchronized when the correlation function of the two successive recurrences of the synchronization signal passing through the semi-reflecting plate is at a maximum. The device may be used for accurate synchronization of information distributed from a transmitter to mutually remote receivers, for example for operating complex electromagnetic or optical rigs.
Device for synchronizing signals transmitted from a transmitter to receivers, characterized in that it comprises at least, at the level of the transmitter, means for generating a synchronization signal having a recurrence period and, at the level of each receiver, controllable means for delaying the synchronization signal and a synchronization loop comprising, downstream of the delay means, a semi-reflecting plate such that a part of the signal makes at least one outward/return trip from the reciever to the transmitter and from the transmitter to the reciever, and comprising correlation means and means for slaving the delay means dependent on the correlation, a signal received by a receiver being synchronized when the correlation function of two successive recurrences of the synchronization signal passing through the semi-reflecting plate is a maximum.
Dependencies are inferred from the claim text.