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 Title: |
EP0416685B1:
Method for monitoring, by means of a monitoring device, a downstream transmission medium containing a multiplicity of virtual, asynchronously time-shared transmission channels[German][French]
[ Derwent Title ]
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Country:
Kind: |
EP European Patent Office (EPO)
B1 PATENT SPECIFICATION i
(See also:
EP0416685A1 )
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| Inventor: |
Brandt, Dick;
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| Assignee: |
Koninklijke PTT Nederland N.V.
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| Published / Filed: |
1995-02-22
/ 1990-08-24
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| Application Number: |
EP1990000202268
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| IPC Code: |
Advanced:
H04L 12/56;
Core:
more...
IPC-7:
H04L 12/56;
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| ECLA Code: |
H04L12/56D1;
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| Priority Number: |
| 1989-09-05 |
NL1989000002226 |
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| Abstract: |
[From equivalent
EP0416685A1]
A data flow fed to the transmission medium is composed of data cells which are each transmitted via one of said transmission channels and which each comprise a control word group containing one or more control words, and also an information word group containing one or more information words, which control words are read out in the monitoring device; at least one variable being maintained, in addition, in the monitoring device which, on arrival of a data cell, is mutated in accordance with a mutation algorithm containing one or more mutation parameters, and said mutated variable then being processed in accordance with an assessment algorithm containing one or more assessment parameters to form an assessment signal. The method according to the invention is characterized in that, on arrival of a data cell, a number of variables can be mutated and processed in the monitoring device to a corresponding number of assessment signals as mentioned, and furthermore, in that, for each data cell, the control word group mentioned comprises a control word which, on arrival of a data cell, is read out in the monitoring device and which gives an indication of those variables which have to be mutated and then processed and of the mutation and assessment algorithms to be used in doing so. Furthermore, it is characteristic of the invention that one or more of the assessment signals mentioned are processed in accordance with a combination algorithm containing one or more combination parameters to form a control signal, and furthermore that, for each data cell, the control word group mentioned comprises a control word, which on arrival of a data cell is read out in the monitoring device and which gives an indication of the assessment signals which have to be processed and of the combination algorithm to be used in doing so. A device for implementing the method according to the invention preferably comprises a reading unit (1) to which the data cells are presented for reading out at least the control words of said data cells, a setting device (2) for setting, on the basis of the data read out in the reading unit, which variables, or algorithms or parameters have to be used for generating the control signal (c), furthermore a number of mutation units (4a,b,c,..) for mutating the respective variables indicated by the setting unit, and also a number of assessment units (5a,b,c,..) for processing the respective mutated variables to form the respective assessment signals (b), one or more combination units (6) for combining the assessment signals concerned to form one or more control signals (c), and a switching unit (7) for temporarily storing the contents of the data cell and transmitting or not transmitting the data cell depending on the control signal concerned.
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| INPADOC Legal Status: |
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| Designated Country: |
AT BE CH DE DK ES FR GB GR IT LI LU NL SE
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| Family: |
Show 13 known family members
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First Claim:
Show all claims |
1. Method for monitoring, by means of a monitoring device, a downstream transmission medium which comprises a multiplicity of virtual, asynchronously time-shared transmission channels via which a data flow fed into said transmission medium can be transmitted, which data flow is composed of data cells which are each transmitted via one of said transmission channels and which each comprise a control word group containing one or more control words and also an information word group containing one or more information words, which control words are read out in the monitoring device; at least one variable being maintained, in addition, in the monitoring device, which variable is mutated on arrival of a data cell in accordance with a mutation algorithm containing one or more mutation parameters and said mutated variable then being processed to form an assessment signal in accordance with an assessment algorithm containing one or more assessment parameters; in the monitoring device, on arrival of a data cell, a number of variables being mutated and processed to form a corresponding number of assessment signals as mentioned, and furthermore, for each data cell, the said control word group comprising a control word which, on arrival of a data cell, is read out in the monitoring device and giving an indication of those variables which have to be mutated and then processed and of the mutation and assessment algorithms to be used in doing so.
[German]
[French]
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Description
Expand description |
[From equivalent
EP0416685A1]
+ A. BACKGROUND TO THE INVENTION
+ 1. Field of the invention
The invention relates to a method for monitoring, by means of a monitoring device, a downstream transmission medium which comprises a multiplicity of virtual, asynchronously time-shared transmission channels via which a data flow fed into said transmission medium can be transmitted, which data flow is composed of data cells which are each transmitted via one of said transmission channels and which each comprise a control word group containing one or more control words and also an information word group containing one or more information words, which control words are read out in the monitoring device; at least one variable being maintained, in addition, in the monitoring device, which variable is mutated on arrival of a data cell in accordance with a mutation algorithm containing one or more mutation parameters and said mutated variable then being processed to form an assessment signal in accordance with an assessment algorithm containing one or more assessment parameters.
+ 2. Background of the invention
+ B. SUMMARY OF THE INVENTION
+ C. REFERENCES
+ D. EXEMPLARY EMBODIMENTS
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