JP2785613B2 - Selection system display method of path switching device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a selection system display method for a path switching device, and more particularly to a selection system for a path switching device which is used in a central station or the like where a transmission line is concentrated in a communication network and switches a concentrated path. Related to display method.

[0002]

2. Description of the Related Art FIG. 2 shows a conventional example of a selective display system of this type of path switching device. FIG. 2 is a block diagram of a conventional path switching device.

In this prior art example, three sets of data transmission units 21A / B, 22 each having one set of a system A and a system B in a redundant relationship.
A / B, 23A / B, a set of path setting units 24A / B, three data receiving units 25 to 27, and one display control unit 28. It should be noted that the number of data transmission units and data reception units is usually larger, but the explanation will be made with an example of the minimum number for the sake of simplicity.

[0004] The data transmission units 21A and 21B receive the data signals 201A and 201B in a redundant relationship, convert the signals, and then output the signals to the path setting units 24A and 24B. The path setting units 24A and 24B respectively receive signals from the three sets of data transmitting units 21A / B, 22A / B and 23A / B in accordance with three sets of data receiving units 25 according to the preset path setting state. To 27. The selection signal generation circuits 252, 262, 272 of the three data receiving units 25 to 27 generate selection signals 207, 208, 209 from the two input signals from the path setting units 24A / B, and 271 and the display control unit 28. Selection circuits 251, 261 and 27
1 selects one of the input signals from the path setting units 24A / B by the selection signal, and selects the data signals 204 and 20.
Output as 5,206.

The path setting reverse search section 282 of the display control section 28
Reads the state of the path setting from the path setting units 24A and 24B, reversely detects which data transmitting unit the output signal of the path setting unit is input to which data receiving unit, and outputs the information to the processing unit 281. For example, if the path is set as indicated by a dotted line, the connection state is back-detected and this information is output to the processing unit 281.

[0006] The processing unit 281 receives the selection signals from the data receiving units 25 to 29 and the information from the path setting reverse search unit 282, and inputs the selection signals from the data transmitting units 21A / B, 22A / B, 2
A display signal of the selection system in the data reception unit corresponding to each selection system display unit of 3A / B is output.

In this conventional example, the path setting search unit 2
Reference numeral 82 reads a path setting from the path setting unit every time a database having contents equivalent to those of the path setting units 24A and 24B or a selection signal from the selection signal generating circuit changes.

[0008]

As described above, in the conventional example, if the path setting reverse search unit has a database having the same contents as the path setting unit in order for the display control unit to know the path setting state, the data transmission unit When the number of data receiving units, that is, the number of paths, increases, it becomes difficult to make the contents of the variable path setting unit and the contents of the database of the reverse path setting search unit coincide. When reading the contents of the path setting unit every time the selection signal from the selection signal generation circuit changes,
When the selection signal frequently changes due to an increase in the number of paths or the like, the path setting reverse search unit frequently reads the path settings from the path setting unit, which causes a problem that the load on the control unit increases.

[0009]

According to the present invention, there is provided a selection system display system for a path switching apparatus, comprising a plurality of data signals which are respectively inputted from redundant A-system transmission lines and B-system transmission lines, converted, and then output. A plurality of A-system and B-system transmitters, a plurality of receivers for detecting a selection signal from the A-system and B-system input signals, and selecting and outputting one of the input signals based on the selection signal; And a path setting unit for receiving output signals of the transmitting units of the B and B systems and outputting the signals as input signals of the A and B systems of the corresponding receiving unit in accordance with an arbitrarily set combination, and selecting each of the receiving units. And a selection system display means for displaying a selection system of the A system or the B system selected by the corresponding transmission unit from the signal. Identify department Identifiers are inserted into empty slots of the output signal, and each of the receiving units separates the identifiers inserted in the input signal and selects one of the separated A-system and B-system identifiers by the selection signal. Output, and the selection system display means displays a system selected by the transmission unit corresponding to the selector and the selection signal output from each of the reception units.

[0010]

Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram of the present embodiment.

In this embodiment, three sets of data transmission units 1A / B and 2A /
B, 3A / B, a set of path setting units 4A / B, three data receiving units 5 to 7, and one display control unit 8. It should be noted that the number of data transmission units and data reception units is usually larger, but the explanation will be made with an example of the minimum number for the sake of simplicity.

The data transmission units 1A and 1B receive the data signals 101A and 101B, respectively, which are in a redundant relationship, convert the signals with the signal conversion circuits 12A and 12B, insert the identifiers with the identifier insertion circuits 13A and 13B, and insert the identifiers. Path setting unit 4
Signals are output to A and 4B. The identifier insertion circuit inserts an identifier for identifying the data transmission unit into an empty time slot of the pulse train of the output signal.

The path setting units 4A and 4B receive signals from three sets of data transmitting units 1A / B, 2A / B, and 3A / B according to a preset path switching setting state, and transmit the signals to three data receiving units 5A and 4B. To 7 are output.

The identifier separating circuit 53 of the data receiving units 5 to 7
a / b, 63a / b and 73a / b separate the identifiers inserted into the empty time slots of the received signal and output them to the selection circuits 54, 64 and 74. Here, the path setting unit 4A /
If B is in the path setting state indicated by the dotted line, the identifiers of the data transmission units 2A / B are separated by, for example, the identifier separation circuits 53a / b.

The selection signal generating circuits 52, 63, 73
Is a selection signal 1 based on input data from the path setting unit 4A / B.
07, 108 and 109, and select circuits 51, 61,
71, 54, 64, 74 and the processing unit 81 of the control unit 8
Output to The selection circuits 51, 61, and 71 select and output one of the two signals from the path setting unit according to the selection signal.

The selection circuits 54, 64, 74 select one of the two identifier signals from the identifier separation circuits 1A, 1B according to the selection signal, and select the identifier signals 110, 111, 11
The number 2 is output to the processing unit 81 of the display control unit 8.

The processing unit 8 includes selection signals 107, 108, 109 for the three data receiving units and identifier signals 110, 111,
112, and outputs a display signal of the selection system to the selection display unit of the corresponding data transmission unit. This display is A system,
Among the B systems, the system in use is displayed, and if both systems are abnormal, this abnormal state is displayed.

[0018]

As described above, according to the present invention, the identifier is inserted into the output signal of the data transmitting unit, and the information of the path setting state is obtained by the identifier. There is no need to provide a search unit, which simplifies the display control unit, and has the effect of reducing the circuit scale and speeding up the processing speed, especially when the number of passes increases.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of an embodiment of the present invention.

FIG. 2 is a block diagram showing a configuration of a conventional example.

[Explanation of symbols]

1A, 1B, 2A, 2B, 3A, 3B Data transmission unit 4A, 4B Path setting unit 5-7 Data reception unit 8 Display control unit 11A, 21A, 31A, 11B, 21B, 31B
Selection system display section 12A, 21A, 32A, 12B, 22B, 32B
Signal converter 13A, 23A, 33A, 13B, 23B, 33B
Identifier insertion unit 51, 61, 71 selection circuit 52, 62, 72 selection signal generation circuit 53a, 53b, 63a, 63b, 73a, 73b
Identifier separation circuit 54, 64, 74 selection circuit 81 processing unit

Claims (3)

(57) [Claims] 1. A plurality of A-system and B-system transmitters, each of which receives a data signal from a redundant A-system and B-system transmission line, converts the signal, and outputs the converted signal, and a plurality of A-system and B-system transmitters. A plurality of receiving units for detecting a selection signal from an input signal and selecting and outputting one of the input signals based on the selection signal, and inputting a plurality of output signals of the transmission units of the A-system and the B-system and arbitrarily respectively inputting A path setting section for outputting as input signals of the corresponding A-system and B-system of the receiving section according to the set combination, and an A-system or a B-system selected by the corresponding transmitting section from the selection signal of each of the receiving sections In the selection system display method of the path switching device comprising: a selection system display means for displaying the display unit, each transmitting unit inserts an identifier for identifying its own transmitting unit into an empty slot of the output signal; Is in The identifiers inserted into the force signal are separated, and the separated A-system and B-system identifiers are selected and output by the selection signal, and the selection-system display means outputs the selection output by each of the receiving units. A selection system display method for a path switching device, wherein a system selected by the transmitter and the selection signal in accordance with the selection signal is displayed. 2. The selection system display of a path switching device according to claim 1, wherein the reception unit generates the selection signal by comparing the signal levels of the identifiers of the separated A system and B system. method. 3. The selection signal comprises information for selecting the A system when both the A system and the B system are normal or abnormal, and for selecting the normal system when one system is abnormal. 3. The method according to claim 1, further comprising the step of displaying the current selected system at least in a normal state and the abnormality in both systems when the system is abnormal.