JP2015156564A - Data transfer apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a data transfer apparatus capable of performing data transfer in the case that a failure occurs in an input/output processing unit, while suppressing increase in apparatus size.

SOLUTION: An optical coupler 101 supplies an optical data signal L1 input through a transmission line to a first operation system input processing unit 111A and a first standby system input processing unit 111B. The first operation system input processing unit converts the optical data signal to an operation system information data signal E1A and supplies the converted data signal to a first selector 131. The first standby system input processing unit converts the optical data signal to a standby system information data signal E1B and supplies the converted data signal to a standby system connection unit 120. A failure monitoring unit 160 determines the presence/absence of a failure and supplies, as failure information XT, a result of the determination to a connection control unit 150. In the case that a failure occurs in the first operation system input processing unit, the standby system connection unit supplies, as a standby system connection signal R1, the standby system information data signal to the first selector. The first selector supplies, as a selection signal S1, the standby system connection signal to a first output processing circuit 141.

COPYRIGHT: (C)2015,JPO&INPIT

Description

  The present invention relates to a data transfer apparatus for transferring a data signal to a transmission line corresponding to a destination.

In a data transfer device used for data communication such as ATM (Asychronous Transfer Mode) communication, when a port in the device fails, manually reconnect the transmission cable from the failed port to an unused port, The connection information was rewritten. However, such a manual switching operation requires a long time from when a failure occurs to when the apparatus can be used, such as when the maintenance person needs to move to the apparatus installation location to deal with it. Therefore, in addition to the normally used active port, a standby port is provided, and when a port failure is detected, the ATM port is automatically switched from the active system to the standby system. A switch device has been proposed (for example, Patent Document 1).
JP-A-9-181727

  In such an apparatus, it is necessary to provide a standby port in addition to the active port. Further, in order to automatically switch the port without reconnecting the transmission cable to the port, the transmission cable is connected to both the active port and the standby port. Therefore, in addition to the port and the transmission cable used for data transfer, a port and a transmission cable provided in the event of a failure are required separately, which causes a problem that the scale of the apparatus increases.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a data transfer device capable of transferring data by switching a transmission line when a port or the like fails while suppressing an increase in the size of the device.

  A data transfer apparatus according to the present invention includes a first branch unit that sends a first input data signal supplied via a first transmission line to each of a first operating system line and a first standby system line; A first operating system input processing unit for generating a first operating system data signal by performing predetermined input signal processing on the first input data signal supplied via the system line; and the first standby system line A first standby system input processing unit for generating a first standby system data signal by performing the input signal processing on the first input data signal supplied through the second transmission line, and a second transmission line. A second branching unit for sending the second input data signal to the second operating system line and the second standby system line, respectively, and the second input data signal supplied via the second operating system line. Apply input signal processing A second operating system input processing unit for generating a second operating system data signal, and a second operating system that performs the input signal processing on the second input data signal supplied via the second standby system line. A second standby system input processing unit that generates a backup system data signal, a first output processing unit that performs predetermined output signal processing on the first data signal, and the output signal processing on the second data signal When the second output processing unit, the first operating system input processing unit, and the first output processing unit have not failed, the first output processing is performed using the first operating system data signal as the first data signal. And the first standby system data signal is supplied as the first data signal to the first output processing unit when the first operational system input processing unit has failed, and the first output If there is a failure in the processing unit, And said interconnection portion for supplying to the second output processing unit a first standby system data signal as said second data signal, and having a.

It is a block diagram which shows the data transfer apparatus which concerns on this invention. 6 is a diagram showing a first table stored in a connection control unit 150. FIG. It is a figure which shows the 2nd table memorize | stored in the connection control part 150. FIG. It is a figure which shows the path | route of a data signal when a failure generate | occur | produces in the input process part. It is a figure which shows the path | route of a data signal when a failure generate | occur | produces in the output process part.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a block diagram showing a configuration of a data transfer apparatus according to the present invention. As shown in FIG. 1, the data transfer apparatus 10 according to the present invention is, for example, an ATM switch apparatus or the like, and includes a branching unit 100, an input processing unit 110, a standby system connection unit 120, an active system standby system selection unit 130, and an output. A processing unit 140, a connection control unit 150, a failure monitoring unit 160, an output switch 170 (hereinafter referred to as SW 170), and an interface unit 180 (hereinafter referred to as IF 180) are included.

  The branching unit 100 includes optical couplers 101, 102, and 103 connected to transmission lines made of transmission cables such as optical fibers, for example. The input processing unit 110 includes operational system input processing units 111A, 112A, and 113A and standby system input processing units 111B, 112B, and 113B, and performs predetermined input processing such as converting optical signals into electrical signals.

  The optical coupler 101 sends the optical data signal L1 input through the transmission line C1 to the first operation system line U1 and the first standby system line Y1. The optical coupler 102 sends the optical data signal L2 input via the transmission line C2 to the second operation system line U2 and the second standby system line Y2. The optical coupler 103 sends the optical data signal L3 input through the transmission line C3 to the third operation system line U3 and the third standby system line Y3.

  The first operating system input processing unit 111A converts the optical data signal L1 supplied via the first operating system line U1 into an electrical signal, which is used as the operating system information data signal E1A, and the operating system standby system selecting unit 130. To the first selector 131. The second operational system input processing unit 112A converts the optical data signal L2 supplied via the second operational system line U2 into an electrical signal, which is used as the operational system information data signal E2A, and the operational system standby system selection unit 130. To the second selector 132. The third operation system input processing unit 113A converts the optical data signal L3 supplied via the third operation system line U3 into an electrical signal, and uses this as an operation system information data signal E3A, which is used as the operation system standby system selection unit 130. To the third selector 133.

  The first standby system input processing unit 111B converts the optical data signal L1 supplied via the first standby system line U1 into an electrical signal, and supplies this to the standby system connection unit 120 as a standby system information data signal E1B. To do. The second standby system input processing unit 112B converts the optical data signal L2 supplied via the second standby system line U2 into an electrical signal, and supplies this to the standby system connection unit 120 as a standby system information data signal E2B. To do. The third standby system input processing unit 113B converts the optical data signal L3 supplied via the third standby system line U3 into an electrical signal, and supplies this as a standby system information data signal E3B to the standby system connection unit 120. To do.

  The standby system connection unit 120 uses any one of the standby system information data signals E1B, E2B, and E3B as the standby system connection signal R1 in accordance with the connection instruction information CL supplied from the connection control unit 150. This is supplied to the first selector 131 of the selection unit 130. Further, the standby system connection unit 120 supplies any one of the standby system information data signals E1B, E2B, and E3B to the second selector 132 as the standby system connection signal R2 in accordance with the connection instruction information CL. The spare system connection unit 120 supplies any one of the spare system information data signals E1B, E2B, and E3B to the third selector 133 as the spare system connection signal R3 in accordance with the connection instruction information CL.

  The first selector 131 of the active system standby system selection unit 130 selects either the active system information data signal E1A or the standby system connection signal R1 according to the selection instruction information SL supplied from the connection control unit 150, This is supplied to the first output processing circuit 141 of the output processing unit 140 as the selection information data signal S1. The second selector 132 selects one of the operation system information data signal E2A and the standby system connection signal R2 according to the selection instruction information SL, and selects this as the selection information data signal S2 to the second output processing circuit 142. Supply. The third selector 133 selects one of the operation system information data signal E3A and the standby system connection signal R3 according to the selection instruction information SL, and selects this as the selection information data signal S3 to the third output processing circuit 143. Supply.

  The output processing unit 140 includes first, second, and third output processing circuits 141, 142, and 143, and performs predetermined output processing. The first output processing circuit 141 performs, for example, line termination processing such as an SDH (Synchronous Digital Hierarchy) signal and signal synchronization processing on the selection information data signal S1 supplied from the first selector 131. Is supplied to the SW 170 as the processed data signal Q1. The second output processing circuit 142 performs the processing on the selection information data signal S2 supplied from the second selector 132, and supplies this to the SW 170 as the processing data signal Q2. The third output processing circuit 143 performs the processing on the selection information data signal S3 supplied from the third selector 133, and supplies this to the SW 170 as the processing data signal Q3.

  The connection control unit 150 includes a first table indicating connection instruction information CL and selection instruction information SL corresponding to the failure state in the input processing unit 110, and connection instruction information CL corresponding to the failure state in the output processing unit 140. And a second table indicating the selection instruction information SL is stored in advance. As shown in FIG. 2, the first table shows that when the first operating system input processing unit 111A fails, when the second operating system input processing unit 112A fails, the third operating system input processing unit 113A fails. In this case, connection instruction information CL and selection instruction information SL corresponding to cases where there is no failure in the input processing unit 110 are shown. As shown in FIG. 3, when the first output processing circuit 141 has failed, the second output processing circuit 142 has failed, the third output processing circuit 143 has failed, the output table 140, as shown in FIG. The connection instruction information CL and the selection instruction information SL corresponding to each of the cases where there is no failure are shown.

  The connection control unit 150 obtains connection instruction information CL and selection instruction information SL corresponding to the failure information XT supplied from the failure monitoring unit 160 by referring to the first and second tables, and this connection instruction Information CL is supplied to the standby system connection unit 120 and selection instruction information SL is supplied to the active system standby system selection unit 130.

  As described above, the standby system connection unit 120, the active system standby system selection unit 130, and the connection control unit 150 perform the output processing with the active system input processing units 111A to 113A and the standby system input processing units 111B to 113B of the input processing unit 110. It functions as an interconnection unit that cross connects the output circuits 141 to 143 of the unit 140.

  Further, the connection control unit 150 supplies connection processing information CT indicating which of the processing data signals Q1 to Q3 is supplied to the IF 180 to the SW 170 based on the failure information XT supplied from the failure monitoring unit 160. . The connection processing information CT indicates that, for example, among the processing data signals Q1 to Q3, a processing data signal other than the processing data signal processed by the output circuit in which the failure has occurred is selected and supplied to the IF 180. Has been.

  The failure monitoring unit 160 monitors each of the operational input processing units 111A to 113A and the output processing circuits 141 to 143 as to whether or not a failure has occurred, and provides failure information XT indicating the failure monitoring result. This is supplied to the connection control unit 150.

  The SW 170 selects one of the processed data signals Q1 to Q3 based on the connection processing information CT, and supplies this to the IF 180 as the transmission data signal MX. IF 180 sends transmission data signal MX to communication network NW. That is, SW 170 and IF 180 function as a data signal transmission unit. Further, there may be a plurality of IFs 180, and the SW 170 may supply processing data signals Q1 to Q3 to any IF 180 based on the connection processing information CT.

  The operation of the data transfer apparatus according to the present invention will be described below by dividing into cases where no failure has occurred, a failure has occurred in the input processing unit 110, and a failure has occurred in the output processing unit 140. .

[If there is no failure]
First, a case where no failure has occurred in either the input processing unit 110 or the output processing unit 140 will be described.

  The optical coupler 101 sends the optical data signal L1 input through the transmission line C1 to the first operation system line U1 and the first standby system line Y1. The optical coupler 102 sends the optical data signal L2 input via the transmission line C2 to the second operation system line U2 and the second standby system line Y2. The optical coupler 103 sends the optical data signal L3 input through the transmission line C3 to the third operation system line U3 and the third standby system line Y3.

  The first operating system input processing unit 111A converts the optical data signal L1 supplied via the first operating system line U1 into an electrical signal, and the first operating system standby system selecting unit 130 of the operating system standby system selecting unit 130 converts it into an operating system information data signal E1A. This is supplied to the selector 131. The first standby system input processing unit 111B converts the optical data signal L1 supplied via the first standby system line Y1 into an electrical signal, and supplies the electrical signal to the standby system connection unit 120 as the standby system information data signal E1B.

  The second operational system input processing unit 112A converts the optical data signal L2 supplied via the second operational system line U2 into an electrical signal, and the second operational system data processor E2A serves as the second operational system standby system selection unit 130. This is supplied to the selector 132. The second standby system input processing unit 112B converts the optical data signal L2 supplied via the second standby system line Y2 into an electrical signal, and supplies the electrical signal to the standby system connection unit 120 as the standby system information data signal E2B.

  The third operating system input processing unit 113A converts the optical data signal L3 supplied via the third operating system line U3 into an electrical signal, and the third operating system standby data selecting unit 130 of the operating system standby system selecting unit 130 converts it into an operating system information data signal E3A. This is supplied to the selector 133. The third standby system input processing unit 113B converts the optical data signal L3 supplied via the third standby system line Y3 into an electrical signal, and supplies the electrical signal to the standby system connection unit 120 as the standby system information data signal E3B.

  As a result of monitoring, the failure monitoring unit 160 determines that no failure has occurred in either the input processing unit 110 or the output processing unit 140, and supplies failure information XT indicating that there is no failure to the connection control unit 150. To do.

  The connection control unit 150 refers to the first table and the second table, and acquires connection instruction information CL and selection instruction information SL corresponding to the case where no failure has occurred.

  As shown in FIG. 2, in the first table, when there is no failure in the operational input processing unit of the input processing unit 110, the standby input processing units 111B to 113B and the selectors 131 to 133 are not connected. Connection instruction information CL indicating that the standby system connection unit 120 does not perform relay supply processing is shown. Further, in the first table, when there is no failure in the operational system input processing unit of the input processing unit 110, the selectors 131 to 133 all select the operational system information data signals from the operational system input processing units 111A to 113A. Selection instruction information SL to that effect is shown.

  As shown in FIG. 3, in the second table, when there is no failure in the output processing circuits 141 to 143 of the output processing unit 140, the standby system input processing units 111B to 113B and the selectors 131 to 133 are not connected. That is, the connection instruction information CL that the standby connection unit 120 does not perform the relay supply process is shown. In the second table, when there is no failure in the output processing circuits 141 to 143 of the output processing unit 140, the selectors 131 to 133 all select the operation system information data signals from the operation system input processing units 111A to 113A. The selection instruction information SL to do is shown.

  The connection control unit 150 supplies connection instruction information CL indicating that the relay supply process is not performed to the standby system connection unit 120. The connection control unit 150 supplies the first selector 131 with selection instruction information SL to select the operation system information data signal E1A supplied from the first operation system input processing unit 111A. The connection control unit 150 supplies the second selector 132 with selection instruction information SL to select the operation system information data signal E2A supplied from the second operation system input processing unit 112A. The connection control unit 150 supplies the third selector 133 with selection instruction information SL indicating that the operation system information data signal E3A supplied from the third operation system input processing unit 113A should be selected.

  The first selector 131 selects the operating system information data signal E1A according to the selection instruction information SL supplied from the connection control unit 150, and supplies it to the first output processing circuit 141 of the output processing unit 140 as the selection information data signal S1. . The second selector 132 selects the operation system information data signal E2A according to the selection instruction information SL supplied from the connection control unit 150, and supplies it to the second output processing circuit 142 of the output processing unit 140 as the selection information data signal S2. . The third selector 133 selects the operating system information data signal E3A according to the selection instruction information SL supplied from the connection control unit 150, and supplies it to the third output processing circuit 143 of the output processing unit 140 as the selection information data signal S3. .

  The first output processing circuit 141 performs line termination processing and signal synchronization processing on the selection information data signal S1, and supplies this to the SW 170 as a processing data signal Q1. The second output processing circuit 142 performs line termination processing and signal synchronization processing on the selection information data signal S2, and supplies this to the SW 170 as a processing data signal Q2. The third output processing circuit 143 performs line termination processing and signal synchronization processing on the selection information data signal S3, and supplies this to the SW 170 as a processing data signal Q3.

  Based on the failure information XT indicating that no failure exists, the connection control unit 150 supplies the SW 170 with connection processing information CT indicating that the processed data signals Q1 to Q3 are supplied to the IF 180 as the transmission data signal MX.

  The SW 170 supplies the processed data signals Q1 to Q3 to the IF 180 as the transmission data signal MX based on the connection processing information CT. IF 180 sends transmission data signal MX to communication network NW.

  As a result of the operation of each unit described above, as indicated by solid arrows in FIG. 4, the optical data signal L1 input to the optical coupler 101 is converted into an electrical signal by the first operating system input processing unit 111A, and the operating system information data The signal E1A is supplied to the first selector 131. The operational system information data signal E1A is supplied to the first output processing circuit 141 as the selection information data signal S1, and the first output processing circuit 141 performs line termination processing and signal synchronization processing. The processed data signal Q1 subjected to the processing is supplied to the SW 170, and is transmitted to the communication network NW via the IF 180 as the transmission data signal MX.

  Similarly, the optical data signal L2 input to the optical coupler 102 is converted into an electrical signal by the second operating system input processing unit 112A and supplied to the second selector 132 as the operating system information data signal E2A. The operational system information data signal E2A is supplied to the second output processing circuit 142 as the selection information data signal S2, and the second output processing circuit 142 performs line termination processing and signal synchronization processing. The processed data signal Q2 subjected to the processing is supplied to the SW 170, and is transmitted to the communication network NW via the IF 180 as the transmission data signal MX.

  The optical data signal L3 input to the optical coupler 103 is converted into an electrical signal by the third operating system input processing unit 113A and supplied to the third selector 133 as the operating system information data signal E3A. The operational system information data signal E3A is supplied to the third output processing circuit 143 as the selection information data signal S3, and the third output processing circuit 143 performs line termination processing and signal synchronization processing. The processed data signal Q3 subjected to the processing is supplied to the SW 170, and is transmitted to the communication network NW via the IF 180 as the transmission data signal MX.

[When there is a failure in the input processing unit 110]
[When there is a failure in the first active system input processing unit 111A]
Next, an operation related to processing for the optical data signal L1 when a failure has occurred in the first active system input processing unit 111A of the input processing unit 110 will be described. Note that the operation related to the processing on the optical data signals L2 and L3 is the same as that in the case where there is no failure, and thus the description thereof is omitted.

  The optical coupler 101 sends the optical data signal L1 input through the transmission line C1 to the first operation system line U1 and the first standby system line Y1.

  The first operating system input processing unit 111A converts the optical data signal L1 supplied via the first operating system line U1 into an electrical signal, and the first operating system standby system selecting unit 130 of the operating system standby system selecting unit 130 converts it into an operating system information data signal E1A. This is supplied to the selector 131. The first standby system input processing unit 111B converts the optical data signal L1 supplied via the first standby system line Y1 into an electrical signal, and supplies the electrical signal to the standby system connection unit 120 as the standby system information data signal E1B.

  The failure monitoring unit 160 supplies the connection control unit 150 with failure information XT indicating that the first active system input processing unit 111A has failed.

  The connection control unit 150 refers to the first table, and acquires connection instruction information CL and selection instruction information SL corresponding to the case where the first active system input processing unit 111A is out of order.

  As shown in FIG. 2, the first table indicates that the first standby system input processing unit 111B and the first selector 131 are connected when a failure occurs in the first active system input processing unit 111A. Connection instruction information CL indicating that the spare system connection unit 120 should supply the spare system connection data signal E1B supplied from the first spare system input processing unit 111B to the first selector 131 as the spare system connection signal R1 is shown. . In the first table, when a failure occurs in the first active system input processing unit 111A of the input processing unit 110, the first selector 131 displays the standby system connection signal R1 supplied from the standby system connection unit 120. Selection instruction information SL to be selected is shown.

  The connection control unit 150 supplies connection instruction information CL indicating that the first standby system input processing unit 111B and the first selector 131 are to be connected to the standby system connection unit 120.

  The backup system connection unit 120 connects the first backup system input processing unit 111B and the first selector 131, and the backup system information data signal E1B supplied from the first backup system input processing unit 111B is used as the backup system connection signal R1. This is supplied to the first selector 131.

  The connection control unit 150 supplies the first selector 131 with selection instruction information SL indicating that the standby connection signal R1 should be selected.

  The first selector 131 selects the standby system information data signal E1B, which is the standby system connection signal R1, and supplies it as the selection information data signal S1 to the first output processing circuit 141 of the output processing unit 140.

  The first output processing circuit 141 performs line termination processing and signal synchronization processing on the selection information data signal S1, and supplies this to the SW 170 as a processing data signal Q1.

  The connection control unit 150 supplies connection processing information CT indicating that the processing data signal Q1 is supplied to the IF 180 as the transmission data signal MX to the SW 170.

  The SW 170 selects the processing data signal Q1 based on the connection processing information CT, and supplies this to the IF 180 as the transmission data signal MX. IF 180 sends transmission data signal MX to communication network NW.

  By the operation of each unit described above, the optical data signal L1 input to the optical coupler 101 is converted into an electrical signal by the first standby system input processing unit 111B as shown by the broken arrow in FIG. The signal E1B is supplied to the standby system connection unit 120. The spare system information data signal E1B is supplied to the first selector 131 as the spare system connection signal R1, and then supplied to the first output processing circuit 141 as the selection information data signal S1, and the first output processing circuit 141 terminates the line. Processing and signal synchronization processing are performed. The processed data signal Q1 subjected to the processing is supplied to the SW 170, and is transmitted to the communication network NW via the IF 180 as the transmission data signal MX.

[When there is a failure in the second active input processing unit 112A]
Next, an operation related to the processing for the optical data signal L2 when a failure has occurred in the second active system input processing unit 112A will be described. The operation related to the processing on the optical data signals L1 and L3 is the same as that in the case where there is no failure, and thus the description thereof is omitted.

  The optical coupler 102 sends the optical data signal L2 input via the transmission line C2 to the second operation system line U2 and the second standby system line Y2.

  The second operating system input processing unit 112A converts the optical data signal L2 supplied via the second operating system line U2 into an electrical signal, and supplies the electrical signal to the second selector 132 as the operating system information data signal E2A. The second standby system input processing unit 112B converts the optical data signal L2 supplied via the second standby system line Y2 into an electrical signal, and supplies the electrical signal to the standby system connection unit 120 as the standby system information data signal E2B.

  The failure monitoring unit 160 supplies the connection control unit 150 with failure information XT indicating that the second active system input processing unit 112A has failed.

  The connection control unit 150 refers to the first table, and acquires the connection instruction information CL and the selection instruction information SL corresponding to the case where the second active system input processing unit 112A is out of order.

  As shown in FIG. 2, the first table indicates that the second standby input processing unit 112B and the second selector 132 are connected when a failure occurs in the second active input processing unit 112A. Connection instruction information CL indicating that the spare system connection unit 120 should supply the spare system information data signal E2B supplied from the second spare system input processing unit 112B to the second selector 132 as the spare system connection signal R2 is shown. . The first table also includes selection instruction information SL indicating that the second selector 132 should select the standby connection signal R2 when a failure occurs in the second active input processing unit 112A of the input processing unit 110. It is shown.

  The connection control unit 150 supplies to the standby system connection unit 120 connection instruction information CL indicating that the second standby system input processing unit 112B and the second selector 132 should be connected.

  The spare system connection unit 120 connects the second spare system input processing unit 112B and the second selector 132, and the spare system information data signal E2B supplied from the second spare system input processing unit 112B is used as the spare system connection signal R2. This is supplied to the second selector 132.

  The connection control unit 150 supplies the second selector 132 with selection instruction information SL indicating that the standby system connection signal R2 supplied from the standby system connection unit 120 should be selected.

  The second selector 132 selects the standby system connection signal R2 and supplies it to the second output processing circuit 142 of the output processing unit 140 as the selection information data signal S2.

  The second output processing circuit 142 performs line termination processing and signal synchronization processing on the selection information data signal S2, and supplies this to the SW 170 as a processing data signal Q2.

  The connection control unit 150 supplies connection processing information CT indicating that the processing data signal Q2 is supplied to the IF 180 as the transmission data signal MX to the SW 170.

  The SW 170 selects the processing data signal Q2 based on the connection processing information CT, and supplies this to the IF 180 as the transmission data signal MX. IF 180 sends transmission data signal MX to communication network NW.

[When there is a failure in the output processing unit]
[When there is a failure in the first output processing circuit 141]
Next, an operation related to processing for the optical data signal L1 when a failure has occurred in the first output processing circuit 141 of the output processing unit 140 will be described. Note that the operation related to the processing on the optical data signals L2 and L3 is the same as that in the case where there is no failure, and thus the description thereof is omitted.

  The optical coupler 101 sends the optical data signal L1 input through the transmission line C1 to the first operation system line U1 and the first standby system line Y1.

  The first operating system input processing unit 111A converts the optical data signal L1 supplied via the first operating system line U1 into an electrical signal, and the first operating system standby system selecting unit 130 of the operating system standby system selecting unit 130 converts it into an operating system information data signal E1A. This is supplied to the selector 131. The first standby system input processing unit 111B converts the optical data signal L1 supplied via the first standby system line Y1 into an electrical signal, and supplies the electrical signal to the standby system connection unit 120 as the standby system information data signal E1B.

  The failure monitoring unit 160 supplies failure information XT indicating that the first output processing circuit 141 has failed to the connection control unit 150.

  The connection control unit 150 refers to the second table, and acquires the connection instruction information CL and the selection instruction information SL corresponding to the case where the first output processing circuit 141 has failed.

  As shown in FIG. 3, the second table indicates that when the first output processing circuit 141 has a failure, the first standby system input processing unit 111B and the second selector 132 are connected, that is, the standby system. Connection instruction information CL indicating that the connection unit 120 should supply the standby system information data signal E1B supplied from the first standby system input processing unit 111B to the second selector 132 as the standby system connection signal R2 is shown. The second table also includes a selection instruction indicating that the second selector 132 should select the spare connection signal R2 supplied from the spare connection unit 120 when a failure occurs in the first output processing circuit 141. Information SL is shown.

  The connection control unit 150 supplies to the standby system connection unit 120 connection instruction information CL indicating that the first standby system input processing unit 111B and the second selector 132 should be connected.

  The backup system connection unit 120 connects the first backup system input processing unit 111B and the second selector 132, and the backup system information data signal E1B supplied from the first backup system input processing unit 111B is used as the backup system connection signal R2. Relay supply to the second selector 132.

  The connection control unit 150 supplies the second selector 132 with selection instruction information SL indicating that the standby system connection signal R2 supplied from the standby system connection unit 120 should be selected. The connection control unit 150 supplies the first selector 131 with selection instruction information SL to select the operation system information data signal E1A supplied from the first operation system input processing unit 111A.

  The second selector 132 selects the standby system connection signal R2 supplied from the standby system connection unit 120 and supplies it to the second output processing circuit 142 of the output processing unit 140 as the selection information data signal S2. The first selector 131 selects the operation system information data signal E1A supplied from the first operation system input processing unit 111A, and supplies it to the first output processing circuit 141 as the selection information data signal S1.

  The first output processing circuit 141 performs line termination processing and signal synchronization processing on the selection information data signal S1, and supplies this to the SW 170 as a transmission data signal Q1. The second output processing circuit 142 performs line termination processing and signal synchronization processing on the selection information data signal S2, and supplies this to the SW 170 as a transmission data signal Q2.

  The connection control unit 150 indicates that a failure has occurred in the first output processing circuit 141 because the failure information XT is a connection process indicating that the transmission data signal Q2 is supplied to the IF 180 instead of the transmission data signal Q1. Information CT is supplied to SW170.

  SW 170 selects Q2 among transmission data signals Q1 and Q2 based on connection processing information CT, and supplies this to IF 180 as transmission data signal MX. IF 180 sends transmission data signal MX to communication network NW.

  As a result of the operation of each unit described above, the optical data signal L1 input to the optical coupler 101 is converted into an electrical signal by the first standby system input processing unit 111B as indicated by the broken arrow in FIG. The signal E1B is supplied to the standby system connection unit 120. The spare system information data signal E1B is supplied to the second selector 132 as the spare system connection signal R2, and then is supplied to the second output processing circuit 142 as the selection information data signal S2, and the second output processing circuit 142 terminates the line. Processing and signal synchronization processing are performed. The processed data signal Q2 subjected to the processing is supplied to the SW 170, and is transmitted to the communication network NW via the IF 180 as the transmission data signal MX.

[When there is a failure in the second output processing circuit 142]
Next, an operation related to the processing for the optical data signal L2 when the second output processing circuit 142 has a failure will be described. The operation related to the processing on the optical data signals L1 and L3 is the same as that in the case where there is no failure, and thus the description thereof is omitted.

  The optical coupler 102 sends the optical data signal L2 input via the transmission line C2 to the second operation system line U2 and the second standby system line Y2.

  The second operating system input processing unit 112A converts the optical data signal L2 supplied via the second operating system line U2 into an electrical signal, and supplies the electrical signal to the second selector 132 as the operating system information data signal E2A. The second standby system input processing unit 112B converts the optical data signal L2 supplied via the second standby system line Y2 into an electrical signal, and supplies the electrical signal to the standby system connection unit 120 as the standby system information data signal E2B.

  The failure monitoring unit 160 supplies failure information XT indicating that the second output processing circuit 142 has failed to the connection control unit 150.

  The connection control unit 150 refers to the second table, and acquires connection instruction information CL and selection instruction information SL corresponding to the case where the second output processing circuit 142 has failed.

  As shown in FIG. 3, the second table indicates that when the second output processing circuit 142 has a failure, the second standby system input processing unit 112B and the first selector 131 are connected, that is, the standby system. Connection instruction information CL indicating that the connection unit 120 should supply the standby system information data signal E2B supplied from the second standby system input processing unit 112B to the first selector 131 as the backup system connection signal R1 is shown. The second table also shows selection instruction information SL indicating that the first selector 131 should select the standby connection signal R1 when a failure has occurred in the second output processing circuit 142.

  The connection control unit 150 supplies connection instruction information CL indicating that the second standby system input processing unit 112B and the first selector 131 should be connected to the standby system connection unit 120.

  The standby system connection unit 120 connects the second standby system input processing unit 112B and the first selector 131, and uses the standby system information data signal E2B supplied from the second standby system input processing unit 112B as the standby system connection signal R1. This is supplied to the first selector 131.

  The connection control unit 150 supplies the first selector 131 with selection instruction information SL indicating that the standby system connection signal R1 supplied from the standby system connection unit 120 should be selected. The connection control unit 150 supplies the second selector 132 with selection instruction information SL to select the operation system information data signal E2A supplied from the second operation system input processing unit 112A.

  The first selector 131 selects the standby system connection signal R1 supplied from the standby system connection unit 120 and supplies it to the first output processing circuit 141 of the output processing unit 140 as the selection information data signal S1. The second selector 132 selects the operation system information data signal E2A supplied from the second operation system input processing unit 112A, and supplies it to the second output processing circuit 142 as the selection information data signal S2.

  The first output processing circuit 141 performs line termination processing and signal synchronization processing on the selection information data signal S1, and supplies this to the SW 170 as a transmission data signal Q1. The second output processing circuit 142 performs line termination processing and signal synchronization processing on the selection information data signal S2, and supplies this to the SW 170 as a transmission data signal Q2.

  The connection control unit 150 indicates that a failure has occurred in the second output processing circuit 142 because the failure information XT is a connection process indicating that the transmission data signal Q1 is supplied to the IF 180 instead of the transmission data signal Q2. Information CT is supplied to SW170.

  The SW 170 selects Q1 among the transmission data signals Q1 and Q2 based on the connection processing information CT, and supplies this to the IF 180 as the transmission data signal MX. IF 180 sends transmission data signal MX to communication network NW.

  As described above, in the transfer data device 10 according to the present embodiment, the active system input processing unit 111A (112A) and the standby system input processing unit 111B (112B) receive the same optical data signal L1 (L2). Input processing is performed. When there is a failure in the active system input processing unit 111A (112A), the selector 131 (132) selects and outputs the standby system information data signal E1B (E2B) for which the standby system input processing unit 111B (112B) has performed the input process. This is supplied to the processing circuit 141 (142). As described above, the standby input processing unit processes the same optical data signal as that of the active system, so that it is not necessary to separately provide a transmission cable or the like.

  In the transfer data device 10 according to the present embodiment, when there is a failure in the output processing circuit 141 (142), the standby system connection unit 120 sends the standby system information data signal E1B (E2B) to the selector 132 (131). The selector 132 (131) supplies this to the output processing circuit 142 (141). In this way, the standby input processing unit processes the same optical data signal as the active input processing unit, and supplies this to the output circuit to process the data signal originally associated with the other optical data signal for output processing. Therefore, it is not necessary to separately provide a spare output processing unit in case of failure.

  Therefore, according to the transfer data device 10 of the present invention, it is possible to transfer data when a failure occurs while suppressing an increase in the device scale.

  In the above embodiment, the optical data signal is input to the branching unit 100. However, the present invention is not limited to this. For example, an electrical signal may be input. Moreover, the process which the input process part 100 performs is not restricted to a photoelectric conversion process. For example, each module (111A, 111B, 112A, 112B, 113A, 113B) of the input processing unit 100 performs predetermined input processing such as photoelectric conversion processing, waveform shaping processing, or noise removal processing on the input signal. If it is good. The output processing performed by the output processing unit 140 is not limited to line termination processing and signal synchronization processing. For example, each module (141, 142, 143) of the output processing unit 140 may perform a predetermined output process such as a line termination process, a signal synchronization process, or a signal amplification process.

  Moreover, in the said Example, although it was set as the structure which receives the input signal for 3 systems and transfers to the communication network NW, it is not restricted to this. In short, the present invention only needs to have the following configuration that accepts at least two systems of input signals.

  That is, the data transfer apparatus according to the present invention uses the first input data signal (L1) supplied via the first transmission line (C1) as the first operating system line (U1) and the first standby system line (Y1). The first operating system data signal (E1A) is obtained by applying predetermined input signal processing to the first branching section (101) to be transmitted to each and the first input data signal supplied via the first operating system line. A first standby system data signal (E1B) by performing input signal processing on the first input data signal supplied via the first standby system line and the first active system input processing unit (111A) for generating The first standby system input processing unit (111B) for generating the second input data signal (L2) supplied via the second transmission line (C2) to the second operating system line (U2) and the second standby system Send to each line (Y2) A second operating system for generating a second operating system data signal (E2A) by performing input signal processing on the second input data signal supplied via the two branching unit (102) and the second operating system line An input processing unit (112A) and a second standby system that generates a second standby system data signal (E2B) by performing input signal processing on the second input data signal supplied via the second standby system line The input processing unit (112B), the first output processing unit (141) that performs predetermined output signal processing on the first data signal (S1), and the output signal processing on the second data signal (S2) When no failure has occurred in the second output processing unit (142), the first operation system input processing unit, and the first output processing unit, the first operation system data signal is used as the first data signal to the first output processing unit. Supply, because of the first operational input processing unit Is generated, the first standby system data signal is supplied to the first output processing unit as the first data signal, and when the first output processing unit is faulty, the first standby system data signal is supplied to the first output processing unit. And an interconnection unit (120, 130, 150) that supplies the second output processing unit as two data signals.

DESCRIPTION OF SYMBOLS 10 Data transfer apparatus 100 Input processing part 101-103 Optical coupler 110 Input processing part 111A-113A Operation system input processing part 111B-113B Standby system input processing part 120 Standby system connection part 130 Operation system standby system selection part 131-133 Selector 140 Output processing unit 141 to 143 Output circuit 150 Connection control unit 160 Failure monitoring unit 170 Output switch 180 Interface unit C1 to C3 Transmission line L1 to L3 Optical data signal U1 to U3 Operation system line Y1 to Y3 Backup system line XT Failure information CL connection Instruction information SL selection instruction information CT connection processing information

Claims (6)

A first branching unit for sending the first input data signal supplied via the first transmission line to the first operating system line and the first standby system line;
A first operating system input processing unit that generates a first operating system data signal by performing predetermined input signal processing on the first input data signal supplied via the first operating system line;
A first standby system input processing unit for generating a first standby system data signal by performing the input signal processing on the first input data signal supplied via the first standby system line;
A second branch unit for sending the second input data signal supplied through the second transmission line to the second operation system line and the second standby system line;
A second operational input processing unit that generates a second operational data signal by performing the input signal processing on the second input data signal supplied via the second operational line;
A second standby system input processing unit that generates a second standby system data signal by performing the input signal processing on the second input data signal supplied via the second standby system line;
A first output processing unit that performs predetermined output signal processing on the first data signal;
A second output processing unit for performing the output signal processing on a second data signal;
When no failure has occurred in the first operating system input processing unit and the first output processing unit, the first operating system data signal is supplied to the first output processing unit as the first data signal, and the first When a failure occurs in one operational system input processing unit, the first standby system data signal is supplied to the first output processing unit as the first data signal, and the first output processing unit fails A data transfer device comprising: an interconnecting unit configured to supply the first standby data signal as the second data signal to the second output processing unit.   When the second operating system input processing unit and the second output processing unit have not failed, the interconnection unit uses the second operating system data signal as the second data signal as the second output processing unit. And when the failure occurs in the second operational system input processing unit, the second standby system data signal is supplied as the second data signal to the second output processing unit, and the second output processing is performed. 2. The data transfer apparatus according to claim 1, wherein, when a failure occurs in the unit, the second standby data signal is supplied to the first output processing unit as the first data signal. The interconnect is
A first selector that selects one of the first operation data signal and the first standby connection signal and outputs it as the first data signal;
A second selector for selecting one of the second operational data signal and the second standby connection signal and outputting it as the second data signal;
When no failure has occurred in the first active system input processing unit and the first output processing unit, the first operating system data signal is selected by controlling the first selector, and the first active system input process The first selector is controlled to select the first standby connection signal when a failure occurs in the unit, and the second selector is controlled when a failure occurs in the first output processing unit. And a selection control unit for selecting the second standby connection signal,
When a failure occurs in the first active system input processing unit, the first standby system data signal is supplied to the first selector as the first standby system connection signal, and the first output processing unit has a fault. 3. The data according to claim 1, further comprising: a spare connection section that supplies the first spare data signal as the second spare connection signal to the second selector when it occurs. Transfer device. The selection control unit controls the second selector to select the second operational data signal when no failure occurs in the second operational input processing unit and the second output processing unit, When a failure occurs in the second operational system input processing unit, the second selector is controlled to select the second standby system connection signal. When a failure occurs in the second output processing unit Controlling the first selector to select the first standby connection signal;
The standby system connection unit supplies the second standby system data signal to the second selector as the second standby system connection signal when a failure occurs in the second operation system input processing unit, and 4. The data transfer apparatus according to claim 3, wherein when a failure occurs in the two-output processing unit, the second standby data signal is supplied to the first selector as the first standby system connection signal. . The first and second input data signals are optical signals;
The first and second branching units are optical couplers;
The data transfer apparatus according to claim 1, wherein the input signal processing is photoelectric conversion processing. A transmission unit that sends the first output signal output from the first output processing unit and the second output signal output from the second output processing unit to a communication network;
The transmission unit selects the second output signal from the first output signal and the second output signal and sends the selected signal to the communication network when a failure occurs in the first output processing unit. When the second output processing unit has a failure, the first output signal is selected from the first output signal and the second output signal and is sent to the communication network. The data transfer device according to claim 1, wherein the data transfer device is a data transfer device.

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