METHOD OF SYNCHRONIZING DATA FOR ALGORITHMS OF ASYNCHRONOUS COMPUTERS OF AN AIRCRAFT
First Claim
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1. A method of synchronizing data from a first computer in an aircraft for transfer to a second computer of the aircraft, the computers being asynchronous and connected together by a serial communication interface for transferring parameters generated by the first computer to the second computer, which second computer uses that data as inputs for at least one calculation algorithm, wherein said method comprises the steps of:
- a) for said algorithm, generating a sequencing table that comprises, for each input parameter for that algorithm, a finite number of minor frames of the same duration, each containing information about the updating of the corresponding parameter during that duration;
then identifying in the sequencing table the number of valid windows that contain a number N of successive minor frames, and for each of which all of the parameters for input to the algorithm are updated at least once, the number N being determined as a function of the synchronization need and of the duration of a minor frame;
b) distributing the load corresponding to updating the data for the algorithm among N successive send frames of a send table, the positions of these N successive send frames being determined from the position of the, or one of the, above-mentioned valid windows of the sequencing table of the algorithm; and
c) instructing the first computer to use the send table.
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Abstract
A method of synchronizing data for algorithms of asynchronous computers in an aircraft, the method comprising the steps consisting in:
- a) generating a sequencing table for each algorithm and, in said table, identifying the number of valid windows for each of which all of the parameters for input to the algorithm are updated at least once;
- b) distributing the load corresponding to updating the parameters for each algorithm in a send table; and
- c) instructing the first computer to use the send table.
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10 Claims
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1. A method of synchronizing data from a first computer in an aircraft for transfer to a second computer of the aircraft, the computers being asynchronous and connected together by a serial communication interface for transferring parameters generated by the first computer to the second computer, which second computer uses that data as inputs for at least one calculation algorithm, wherein said method comprises the steps of:
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a) for said algorithm, generating a sequencing table that comprises, for each input parameter for that algorithm, a finite number of minor frames of the same duration, each containing information about the updating of the corresponding parameter during that duration;
then identifying in the sequencing table the number of valid windows that contain a number N of successive minor frames, and for each of which all of the parameters for input to the algorithm are updated at least once, the number N being determined as a function of the synchronization need and of the duration of a minor frame;b) distributing the load corresponding to updating the data for the algorithm among N successive send frames of a send table, the positions of these N successive send frames being determined from the position of the, or one of the, above-mentioned valid windows of the sequencing table of the algorithm; and c) instructing the first computer to use the send table. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification