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AssigneeAlcatel Alsthom CGE
InventorsFrank Octaaf Van Der Putten, Paul Marie Pierre Spruyt, Karel Adriaensen
Estimating the term…
A method to realise synchronisation in a receiver (RX), of data (DAT) sent from a transmitter (TX) to the receiver (RX), with a signal (SIG) available in the receiver (RX). The method includes the following steps: in the receiver (RX) generating trigger signals (T) from the signal (S); sending the trigger signals (T) from the receiver (RX) to the transmitter (TX); upon receipt of the trigger signals (T) by the transmitter (TX) sending the data (DAT) from the transmitter (TX) to the receiver (RX).
A method to realise synchronisation in a receiver (RX), of data (DAT) sent from a transmitter (TX) to said receiver (RX), with a signal (SIG) available in said receiver (RX), characterised in that said method includes the steps of:
A receiver (RX) for receiving from a transmitter (TX) data (DAT), said data (DAT) having to be synchronous with a signal (SIG) available in said receiver (RX), characterised in that said receiver (RX) includes:
A transmitter (TX) for transmitting data (DAT) to a receiver (RX), said data (DAT) having to be synchronous with a signal (SIG) available in said receiver (RX), characterised in that said transmitter (TX) includes
Dependencies are inferred from the claim text.
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Synchronisation of signals having the same nominal but fluctuating bit rates, e.g. using buffers: synchronous multiplexing systems, e.g.…
Synchronisation of signals having the same nominal but fluctuating bit rates, e.g. using buffers: synchronisation of packets and cells, e.g.…
Receiver details: taking measures against momentary loss of synchronisation, e.g. inhibiting the synchronisation, using idle words or using…
Multiplex communication
Term end not estimated
The present invention relates to a method to synchronise data as described in the preamble of claim 1, and a transmitter and a receiver realising said method as described in the preambles of claim 4 and claim 6.
Such a method to synchronise data is common knownledge. Indeed, e.g. in communication systems where data is sent from a transmitter to a receiver, for the receiver to be able to interprete the received data, the received data have to be synchronised in the receiver with a reference signal, usual a clock signal of the receiver. Realising synchronisation implies more complexity and therefore there is a need for additional hardware or software in the receiver. The trade-offs are generally between expense and complexity, on one hand, and error performance on the other hand. However, some kind of receivers e.g. receivers using asymmetric digital subscriber line technology are required to have both, a low complexity and also a low error performance.
An object of the present invention is to provide a method to synchronise data and a transmitter and a receiver realising said method of the above known type but which are suited for use in communication systems where a low complexity and a low error performance are required at the receiving side of the communication system.
The above mentioned and other objects and features of the invention will become more apparent and the invention itself will be best understood by referring to the following description of an embodiment taken in conjunction with the accompanying FIGURE which is a block scheme of a synchronisation system including a transmitter and a receiver realising the method of the invention.
Referring to the FIGURE, the working of the synchronisation system will be described. First, the working of the synchronisation system will be explained by means of a functional description of the blocks shown in the FIGURE. Based on this description implementation of the functional blocks will be obvious to a person skilled in the art and will therefor not be described in detail. In addition, the principle working of the synchronisation system will be described in further detail.
The synchronisation system includes a transmitter TX and an asymmetric digital subscriber line modem (ADSL modem) ADSL.