JP3463583B2 - Multiplexer - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multiplexer, and more particularly, it can multiplex low-order group data input from an arbitrary low-order group package into an arbitrary time slot of a high-order group frame. Further, the present invention relates to a multiplexer capable of forming a redundant system by arbitrarily combining low order group packages.

[0002] In recent years, the proportion of information types handled by communication systems has changed significantly, and online data associated with business transactions of companies and production activities such as product design and production arrangement has become a large percentage. .

If there is an error in these data or if the data cannot be transmitted in a timely manner, not only will the business activities be seriously hindered, but if it is data relating to a financial institution, it will be national. Economic activity will also be adversely affected. Therefore, it is required for the communication system to realize high reliability and flexible line configuration, and various forms of redundant configurations are adopted.

On the other hand, when the main purpose of use of the communication system is a telephone, the effects of transmission errors and interruptions can be reduced by appropriate measures by the caller. In such a case, it is possible that higher line usage efficiency is given priority over line reliability.

Therefore, it is possible to multiplex low-order group data input from an arbitrary low-order group package into an arbitrary time slot of a high-order group frame, and further, to form a redundant system by an arbitrary combination of low-order group packages. It is desired to satisfy both of the above requirements by a multiplexer that can be configured.

[0006]

2. Description of the Related Art FIG. 21 shows a structure of a conventional multiplexing device (No. 1), which accommodates four low-order group packages and combines two of them to form a 1: 1 redundant system. Shows.

In FIG. 21, 10-1 is a low-order group package (1), 10-2 is a low-order group package (2), 10
-3 is a low-order group package (3), 10-4 is a low-order group package (4). Note that n is an integer from 1 to 4,
In the figure, the low-order group package (n) is labeled as LIF (n), and this labeling method will be used thereafter. LI
F is the meaning of the interface package on the low-order side.

Further, 210-1 is a selector (SEL in the figure
Is marked. The same applies hereinafter. ), 210-
2 is a selector, 211-1 is a distribution circuit (indicated as DIS in the figure, and the same applies hereinafter), 211-2
Is a distribution circuit, 212 is a parallel-serial conversion circuit (P / P in the figure)
It is labeled as S. The same applies hereinafter. ) 213
Is a serial-parallel conversion circuit (denoted as S / P in the figure).
The same applies hereinafter. ), 214 is a switching logic circuit,
The multiplexing device 20b is configured by these components.

Further, 30 is a high-order group package (H in the figure)
It is labeled as IF. The same applies hereinafter. ). It should be noted that the HIF means an interface package on the side of the higher-order group, although it is not good enough.

In the case of the configuration shown in FIG. 21, the low-order group package (1) and the low-order group package (2) constitute a 1: 1 redundant system (duplex system), and the low-order group package (3).
And the low-order group package (4) form a 1: 1 redundant system.

That is, the same low-order group data is input to the low-order group package (1) and the low-order group package (2), and the low-order group package (1) and the low-order group package (2) are input. 1) is selected by the selector 210-1 and supplied to the parallel-series conversion circuit 212. Similarly, the low-order group package (3) and the low-order group package (4) have the same low level. Next-order group data is input, and one of the outputs of the low-order group package (3) and the low-order group package (4) is selected by the selector 210-2 and the parallel-serial conversion circuit 21 is selected.
2 is provided for serial conversion (multiplexing) on a bit-by-bit basis of the low-order group data;
Called interleave. 3) is converted into high-order group data and is sent to the high-order group package 30.

The selection signals of the selector 210-1 and the selector 210-2 are supplied from the switching logic circuit 214.

On the other hand, the high-order group data received from the high-order group package 30 is input to the serial-parallel conversion circuit 213 and parallel-converted (separated) into low-order group data bit by bit of the low-order group data to obtain low-order group data. It is supplied to the distribution circuit 211-1 and the distribution circuit 211-2. Then, in this case, the low-order group data supplied to the distribution circuit 211-1 is branched into two and supplied to the low-order group package (1) and the low-order group package (2). -2
The low-order group data supplied to the low-order group is divided into two and supplied to the low-order group package (3) and the low-order group package (4).

Therefore, high line reliability can be obtained by the configuration of FIG.

FIG. 22 shows an example of the configuration of a conventional multiplexing device (No. 2), in which each low-order group package does not constitute a redundant system.

In FIG. 22, 10-1 is a low-order group package (1), 10-2 is a low-order group package (2), 10
-3 is a low-order group package (3), 10-4 is a low-order group package (4).

Reference numeral 215 denotes a parallel-serial conversion circuit, 216.
Is a serial-parallel conversion circuit, and these components constitute a multiplexer 20c.

Further, 30 is a high-order group package.

In the configuration of FIG. 22, four low-order group packages are independently accommodated in the multiplexer.

That is, all the outputs of the low-order group packages (1) to (4) on the side of the multiplexer 20c are guided to the parallel-serial conversion circuit 215 and serial-converted in units of bit of the low-order group data ( It is multiplexed and made into high-order group data and sent to the high-order group package 30.

On the other hand, the high-order group data received from the high-order group package 30 is introduced into the serial-parallel conversion circuit 216, and parallel-converted (separated) into four low-order group data in bit units of the low-order group data. Low order group data is supplied to the low order group packages (1) to (4).

Therefore, high line utilization efficiency can be obtained by the configuration of FIG.

Although bit multiplexing or bit interleaving is well known, it is not necessary to explain it. However, in order to clarify the difference between the technique of the present invention and the conventional technique, the explanation will be made. I'll do it. Since the multiplexing operation of the configuration of FIG. 21 is essentially the same as the multiplexing operation of the configuration of FIG. 22, only the configuration of FIG. 22 will be described.

FIG. 23 is a diagram showing the multiplexing operation of the configuration of FIG.

In FIG. 23, n is an integer from 1 to 4, and the low-order group data is "X" as shown in LIF (n).
n ”,“ Yn ”, and so on.
“Xn”, “Yn”, etc. are 1-bit data forming low-order group data.

In this case, since the four low-order group data are multiplexed into the high-order group, these low-order group data are set to the speed of the low-order group clock unless additional bits are inserted during the multiplexing. At the same speed and 1 / th of the low-order group clock
The low-order group data is sequentially fetched by the signal formed by the pulse having the pulse width of 4 (this pulse width is equal to the clock width of the high-order group clock).

Therefore, in the high-order group data, one bit of four low-order group data at the same time is "X1", "X2", "X" at the time corresponding to one bit of the low-order group data.
3 "," X4 "are arranged in order, and four low-order group data bits at the same time have" Y1 "," Y2 "," Y3 "at the time corresponding to the next 1 bit of the low-order group data. ,
They are arranged in order like "Y4".

Incidentally, "X1", "X" on the higher-order group frame
2 "," X3 "," X4 "," Y1 "," Y2 "," Y "
The time allotted to each bit of 3 "," Y4 "... should be called" bit time slot on higher order frame "or" bit time slot of higher order frame "to be precise. In order to avoid complication, the following will be referred to as a "time slot on a high-order group frame" or a "time slot on a high-order group frame".

Similarly, the time corresponding to one bit of the low-order group data will be referred to as "time slot on the low-order group frame" or "time slot of the low-order group frame".

For the sake of convenience, the number of time slots of the high-order group frame during one time slot of the low-order group data will be referred to as "the number of time slots of the high-order group frame". Therefore, in the case of FIG. 23, the number of time slots in the high-order group frame is four.

On the contrary, in order to separate the high-order group data into the presentation group data, the following may be done, although not shown.
That is, Xn, Yn multiplexed on the higher-order group frame
... has a change point in the time slot, and is multiplexed in the high order group frame by a four-phase signal formed by a pulse having the same speed as the low order group clock and a pulse width equal to the width of the time slot on the high order group frame. Data "X
1 ”,“ X2 ”,“ X3 ”,“ X4 ”,“ Y1 ”,“ Y
2 "," Y3 "," Y4 "..." X1 "," Y
1 ", ...," X2 "," Y2 ", ...," X
3 ”,“ Y3 ”, ...,“ X4 ”,“ Y4 ”, ...
, And the phases of the low-order group data separated by a common signal formed by pulses having the same speed as the low-order group clock and a pulse width equal to the width of the time slot on the high-order group frame may be aligned. .

[0032]

As described above, in the case of the configuration of FIG. 21, the output terminal of the low-order group package (1) on the side of the multiplexer 20b is the selector 210-1.
Fixedly connected to the low-order group package (1)
The input terminal from the side of the multiplexer 20b is the distribution circuit 2
11-1 is fixedly connected, and the output terminal of the low-order group package (2) on the side of the multiplexer 20b is fixedly connected to the selector 210-1. The input terminal from the side of the multiplexer 20b in (2) is fixedly connected to the distribution circuit 211-1. or,
The same applies to the low-order group package (3) and the low-order group package (4). The wiring between all the low-order group packages and the multiplexer is formed by a wiring pattern on the backboard of the shelf or a bundled wire or strap wiring between the shelves.

In the configuration of FIG. 22, the output of the low-order group package (1) on the high-order group package 30 side is fixedly connected to the parallel-series conversion circuit 215, and the low-order group package (1 The input on the side of the high-order group package 30 in (1) is fixedly connected to the series-parallel conversion circuit 216.
The same applies to the other low-order group packages.
The wiring between the low-order group package and the multiplexing device is formed by a wiring pattern on the backboard of the shelf or a bundled wire or strap wiring between the shelves.

Moreover, the configuration of FIG. 21 is provided with the selector and the distribution circuit, but the configuration of FIG. 22 is not provided with them.

Therefore, in order to improve the utilization efficiency of the line after the operation of the multiplexer is started, four low-order groups are accommodated in a set of four low-order group packages to accommodate four low-order group packages. Use by changing the package to accommodate independently,
That is, it is practically impossible to change the configuration of FIG. 21 to the configuration of FIG. 22 for use.

It is also virtually impossible to change the configuration of FIG. 22 to the configuration of FIG. 21 in order to improve the reliability of the line after the start of operation.

However, in reality, there is a demand to change the redundant form of the low-order group package after the operation of the multiplexer is started.

In view of the above problem, the present invention can multiplex low-order group data input from an arbitrary low-order group package into an arbitrary time slot of a high-order group. An object of the present invention is to provide a multiplexer capable of forming a redundant system by an arbitrary combination and to meet the above demand.

[0039]

According to a first aspect of the present invention, a time slot number of a high-order group frame is used as an address, redundant form information indicating a redundant form of a low-order group package, and effective low-order group data are multiplexed in a high-order group frame. Operation enable information indicating whether or not to be performed, a mounting position number of a package used as an active system, and a mounting position number of a package used as a standby system as data, and a setting data memory of the setting data memory. The multiplexing device includes a multiplexing unit that multiplexes low-order group data into high-order group frames according to stored data, and a demultiplexing unit that separates high-order group data into low-order group data according to stored data in the setting data memory.

According to the first aspect of the present invention, for each time slot of the high-order group frame, data of which low-order group package is multiplexed, low-order group packages are combined to form a redundant system, or Since it is possible to arbitrarily set whether to use the low-order group package independently, even if the wiring between the low-order group package and the multiplexer is fixed, the stored data in the setting data memory Allows the data from any low order group package to be multiplexed into any time slot of the high order group frame, and the data stored in the configuration data memory separates the data of any time slot of the high order group frame. And can be supplied to any low-order group package.

Therefore, it is possible to change the configuration of the multiplexer even after the operation is started, and it is possible to flexibly operate the multiplexer which emphasizes the line reliability and the multiplexer which emphasizes the line efficiency. It is possible to realize a multiplexer capable of handling the above.

According to a second aspect of the present invention, in the multiplexing device according to the first aspect of the present invention, the mounting position number unique to the low-order group package for outputting the low-order group data is added to the low-order group data. Mounting position number monitoring that compares and monitors the mounting position number of the low order group package added to the output of the position number adding section and the multiplexing section and the mounting position number of the low order group package given from the setting data memory And a new unit.

According to the second aspect of the present invention, it is verified whether or not the mounting position number unique to the low-order group package added to the high-order group data and the mounting position number of the low-order group package given from the setting data memory. If the two do not match, an alarm can be output as a malfunction of the multiplexer or the setting data memory or a setting error.

Therefore, in addition to the flexible operability of the multiplexer which can be realized by the first invention, the reliability of the multiplexer itself can be improved.

[0045]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a principle configuration diagram (1) of the present invention.

In FIG. 1, 10-1 is a low-order group package (1), 10-2 is a low-order group package (2), 10-
3 is a low-order group package (3) and 10-4 is a low-order group package (4). In the upper part of FIG. 1, (1) to (4) for distinguishing the low-order group packages are collectively labeled as LIF without being labeled, and the same labeling method will be used thereafter.

Further, 201 is a multiplexing unit for multiplexing the low-order group data into the high-order group frame, 202 is a separating unit for separating and supplying the data multiplexed in the high-order group frame into the low-order group package, and 203 is a setting. A setting data memory control unit for controlling the setting data memory, such as writing data to the data memory, 204 uses the time slot number of the high order group frame as an address, the redundancy form information of the low order group package, and each time slot of the high order group frame. A setting data memory for storing operation enable information indicating whether or not effective low-order group data is multiplexed, operability, and a mounting position number of a low-order group package used as a standby system, 20
Denoted at 5 is a separation timing generation unit (separation TIM generation unit in the figure, which determines the timing of which low-order group package to which the low-order group data multiplexed in the high-order group frame is output, and supplies the separation timing signal to the separation unit. Is marked.
The same applies hereinafter. ), The multiplexer 20 is configured by these components.

Further, 30 is a high-order group package.
In addition, in the figure, it is labeled as HIF, and it is labeled similarly thereafter.

The feature of the configuration of FIG. 1 is that although fixedly wired between each low-order group package and the multiplexer,
Stores in the setting data memory which low-order group package data is multiplexed in which time slot of the high-order group frame and which low-order group data multiplexed in the high-order group frame is output to which low-order group package It can be arbitrarily set according to the stored data.

In the following, the multiplexing and demultiplexing process, which is the operation of the configuration of the present invention, will be described step by step.

FIG. 2 is a precondition for the description of the operation of the present invention.

In FIG. 2A, the number of low-order group packages mounted is 4, and the mounting position numbers of the respective low-order group packages are "00", "01", "10", and "11", respectively. Indicates that.

FIG. 2B shows the format of a higher-order group frame, which is time slots 1 to 4 on the higher-order group frame.
Data in the same time slot of the low-order group frame during four time slots (indicated as TS1 to TS4 in the figure) (this is 1 bit of the low-order group frame, at all). Are bit-multiplexed, and the address corresponding to each time slot is "00",
It indicates “01”, “10”, and “11”.

FIG. 3 shows an example of the structure of the multiplexing unit, and also shows the setting data memory.

In FIG. 3, reference numeral 201-1 is a selector for time-divisionally selecting data from the low-order group package and multiplexing on the high-order group frame, and 201-2 is for passing the data selected by the operation enable signal. It is a three-state buffer that controls whether it is prohibited or not, and these form a multiplexer.

Reference numeral 204 is a setting data memory.

Since the precondition shown in FIG. 2 is that there are four low-order group packages, the selection signal of the selector may be 2 bits, and the high-order group frame is formed by four time slots. Therefore, the address of the setting data memory may be 2 bits. And the setting data
The memory address is determined so as to correspond to the time slot number of the high-order group frame.

The setting data memory 204 is an operating system package for outputting the low-order group data to be multiplexed on the high-order group frame among the data stored at the addresses corresponding to the time slot numbers on the high-order group frame. Mounting position numbers U0 and U1 of the low-order group package used
Are sequentially applied as selection signals to the selection signal terminal of the selector 201-1. The low-order group data from each low-order group package is supplied to the input terminal of the selector 201-1.

When the low-order group data is not multiplexed in a specific time slot, the operation enable information (simply indicated as EN in the figure) read from the address corresponding to the time slot is added to the three-state. The output from the selector 201-1 is prohibited in the time slot in which the low-order group data is not multiplexed by supplying it to the control terminal of the buffer 201-2.

Therefore, depending on the mounting position number of the low-order group package stored in the address corresponding to the time slot of the high-order group frame in the setting data memory 204, the data of which low-order group package indicates which time of the high-order group frame. It is possible to arbitrarily set whether to multiplex into slots or not to multiplex low order group data into a specific time slot of a high order group frame.

According to the operations of the separation timing generation unit and the separation unit described later, the separation timing signal is not supplied to any low order group package in the time slot in which the low order group data is not multiplexed. It is also possible to omit the three-state buffer.

FIG. 4 is an example (1) of setting data in the setting data memory, and shows a case where four low-order group packages are independently accommodated in the multiplexer.

Since four low-order group packages are accommodated in the multiplexer, one time slot of the low-order group frame corresponds to four time slots of the high-order group frame. Addresses (to be referred to as time slot addresses, which will be referred to as TS addresses in FIG. 4) are assigned to these four time slots.
The address may be 2 bits.

The 2-bit time slot address assigned to the time slot of the higher-order group frame becomes the address of the setting data memory.

In the table shown in FIG. 4, the following information is the data stored in the setting data memory, which is fixed, but whether low order group data is multiplexed in each time slot of the high order group frame. 1-bit operation enable information (marked as operation EN in the figure) indicating whether or not, 2-bit mounting position number of the low-order group package used as an operating system (indicated as operating system mounting position number in the figure) , A 2-bit mounting position number of the low-order group package used as a backup system (marked as a backup system mounting position number in the figure), and a redundant system configuration (operation) 1-bit redundancy form information indicating whether or not a package used as a system package forms a redundant system together with other packages.

Here, the redundant form information is "0" indicating that the low-order group package is paired with any other low-order group package to form a redundant system, and "1" indicates the low-order group package. It shows that the next group package is not accommodated in the multiplexer independently and does not constitute the redundant system. Since it is assumed here that all low-order group packages are accommodated independently in the multiplexing device, the redundancy form information for all low-order group packages specified by the "operating system mounting position number" is " It is 1 ".

When the operation enable information is "0", it indicates that effective low-order group data is multiplexed in the time slot of the high-order group frame, and when "1", it is effective low in the time slot of the high-order group frame. Indicates that the next group data is not multiplexed. Since it is assumed here that all low-order group packages are accommodated in the multiplexing device independently, the operation enable information is "0" for the time slots of all high-order group frames specified by the "time slot address". It is 0 ".

Now, in the form of the redundant system in the multiplexer having the configuration shown in the precondition of the explanation of the operation of the present invention in FIG. 2, all the low order group packages are used as the active system packages. (A system that does not form a redundant system), a system that has one low-order group package used as a standby system for one low-order group package used as an active system (hereinafter,
It is called a 1: 1 redundant system, which is a so-called duplex system. ), One low-order group package used as a standby system for two low-order group packages used as an active system (hereinafter referred to as a 2: 1 redundant system), and a low-order group package used as an active system. There are four types of low order group packages used as spare systems for one of the three low order group packages (hereinafter referred to as 3: 1 redundant system). The case of forming a redundant system will be described for the time being limited to the 1: 1 redundant system. However, as will be clarified at the end, the technique of the present invention can be applied without limiting the form of the redundant system.

FIG. 4 shows the case where each low-order group package is accommodated in the multiplexing device independently.
Redundancy type information “1”, operation enable information “0”, operation system mounting position number “00” at memory address “00”
Is stored in the setting data memory address “01”, redundant form information “1”, operation enable information “0”, and operating system mounting position number “01” are stored in the setting data memory address “10”. The redundant form information “1”, the operation enable information “0”, and the operation system mounting position number “10” are stored in the storage device. The setting data memory address “11” is stored in the redundant form information “1”, the operation enable information “10”. 0 ”and the operating system mounting position number“ 11 ”are stored. And since there is no low-order group package used as a backup system, it ignores whatever is stored in the backup system mounting position number.
In FIG. 4, DC (Don't Care) is marked.

FIG. 5 is a time chart (No. 1) showing multiplexing, which corresponds to the data stored in the setting data memory shown in FIG.

N is an integer of 1 to 4, and the low-order group data is "Xn", "Yn", ... (For each low-order group package (labeled as LIF (n) in the figure). These are 1 bit of the low-order group.).

Setting data corresponding to the read clock
The address of the memory is specified. Now, as shown in the table of FIG. 4, the mounting position number “00” of the low-order group package is set to the address “00” of the setting data memory and the address of the setting data memory. The mounting position number “01” of the low-order group package is set to “01”, and the mounting position number “10” of the low-order group package is set to the address “10” of the setting data memory.
However, since the mounting position number "11" of the low-order group package is stored in the address "11" of the setting data memory, the mounting position number is read out from the setting data memory in order. The mounting position number is supplied to the selector as a selection signal.

Therefore, the data of the low-order group package (1) is stored in the first time slot of the high-order group frame, and the data of the low-order group package (2) is stored in the second time slot of the high-order group frame. The data of the low-order group package (3) is selected for the third time slot, and the data of the low-order group package (4) is selected for the fourth time slot of the high-order group frame. When this is performed for the low-order group data “X1”, “X2”, “X3”, and “X4”, then the low-order group data “Y1”, “Y2”,
This is performed for all bits of the low-order group frame, such as "Y3" and "Y4", and the low-order group data is bit-multiplexed with the high-order group frame.

In this case, since the operation enable information corresponding to all the time slots of the high-order group frame is "0", all the selected low-order group data are permitted to be output, so that the high-order group frame "X1", "X2", "X" as shown in "Higher-order group data" in FIG.
3 ”,“ X4 ”,“ Y1 ”,“ Y2 ”,“ Y3 ”,“ Y
4 "... are multiplexed in this order.

In this case, the operating system mounting position number "00" is stored in the address "00" of the setting data memory, and the operating system mounting position number "01" is stored in the address "01" of the setting data memory. "Is stored, and the operating system mounting position number is" 1 "at address" 10 "in the setting data memory.
0 "is stored, the operating system mounting position number" 11 "is stored in the address" 11 "of the setting data memory, and these stored operating system mounting position numbers are supplied to the selector as a selection signal. Therefore, the low-order group data are multiplexed on the high-order group frame in the above order.

If the setting data memory address "0"
The operating system mounting position number "11" is stored in "0",
The operating system mounting position number "10" is stored in the setting data memory address "01", and the operating system mounting position number "01" is stored in the setting data memory address "10". .Memory address "11"
If the working system mounting position number “00” is stored in “0”, “X4”, “X3”, “X2”,
"X1", "Y4", "Y3", "Y2", "Y1"
.. are multiplexed in this order.

That is, the low-order group data can be multiplexed on the high-order group frame in an arbitrary order according to the data set in each address of the setting data memory.

FIG. 6 shows an example of setting data to the setting data memory (No. 2). The data of the low-order group package (1) is multiplexed in the first time slot of the high-order group frame, The low-order group package (2) is used as a backup package of the package (1), the data of the low-order group package (3) is multiplexed in the second time slot of the high-order group frame, and the low-order group package ( 3)
The case where the low-order group package (4) is used as a backup system package and the low-order group data is not multiplexed in the third and fourth time slots of the high-order group frame.

Therefore, the redundant form information "0", the operation enable information "0", the operating system mounting position number "00", and the standby system mounting position number "01" are stored in the address "00" of the setting data memory. The redundant form information “0”, the operation enable information “0”, the operating system mounting position number “10”, and the standby system mounting position number “11” are stored in the address “01” of the setting data memory.

The operation enable information "1" is stored in the address "10" of the setting data memory, and any other data may be stored (DC). Similarly, the operation enable information “1” is stored in the address “11” of the setting data memory, and any other data may be stored (DC). That is, the low-order group data is not multiplexed in the time slot of the high-order group frame corresponding to the address of the setting data memory in which the operation enable information “1” is set. This is realized by prohibiting the output of 201-1 from the selector of FIG. 3 by the operation enable information.

FIG. 7 is a time chart (No. 2) showing multiplexing, which corresponds to the setting of FIG.

The data of the low-order group package (1) is "X1
1 ”and“ Y11 ”, and a low-order group package (2) that forms a 1: 1 redundant system with the low-order group package (1)
Data is "X12", "Y12", etc. (Actually, the data of the low-order group package (2) is the same as the data of the low-order group package (1), but a temporary distinction is made. Because of this, the markings are different. Similarly, the data of the low-order group package (3) is "X21", "Y21", and the data of the low-order group package (4) forming a 1: 1 redundant system with the low-order group package (3). The data is like "X22", "Y22".

A read clock and a read address are given to the setting data memory, and the stored data is read in order from the addresses "00", "01", "10" and "11" of the setting data memory. Therefore, the mounting position number "00" is read from the address "00", the mounting position number "01" is read from the address "01", and is supplied to the selector as a selection signal.

However, address "10" and address "1"
Since the output from the setting data memory is prohibited by the operation enable information in the time slot corresponding to 1 ", the low order group data is not selected and multiplexed in the time slot.

Therefore, the data is multiplexed as "higher-order group data" in FIG. 7, and the low-order group data is not multiplexed in the third time slot and the fourth time slot of the high-order group frame. The data of the low-order group package (1) is multiplexed in the first time slot of the frame, and the data of the low-order group package (3) is multiplexed in the second time slot of the high-order group frame.

Contrary to the setting of FIG. 6, the low-order group package (2) and the low-order group package (4) are used as the active packages, and the low-order group package (1) and the low-order group package (3 ) As a spare system package, in the setting shown in FIG. 6, the setting data memory address “00” is set.
Set the operating system mounting position number "01" and the spare system mounting position number "00" to the setting data memory address "0".
The operating system mounting position number "11" may be set to 1 ", and the standby system mounting position number may be set to" 10 ".

Further, if the operation system mounting position number is stored in another address of the setting data memory and the operation enable information is formed corresponding thereto, the low order group data is multiplexed in different time slots of the high order group frame. , Different time slots can be free time slots.

FIG. 8 shows an example of setting data in the setting data memory (No. 3). The data of the low-order group package (1) is multiplexed in the first time slot in the high-order group frame to obtain the low-order group package (3). The low order group package (2) is used as a backup system package of 1), the data of the low order group package (3) is independently multiplexed in the second time slot of the high order group frame, and the third time of the high order group frame is used. Low-order package in slot (4)
Data is independently multiplexed, and data is not multiplexed in the fourth time slot of the higher-order group frame.

Therefore, the redundant form information "0", the operation enable information "0", the working system mounting position number "00", and the spare system mounting position number "01" are stored in the address "00" of the setting data memory. It Further, the redundant form information “1”, the operation enable information “0”, and the operating system mounting position number “10” are stored in the address “01” of the setting data memory, and what is stored in the standby system mounting position number. It does not matter (DC). Similarly, the setting data memory address "1"
Redundancy form information "1", operation enable information "0", and working system mounting position number "11" are stored in "0", and anything may be stored in the backup system mounting position number (DC). The operation enable information “1” is stored in the address “11” of the setting data memory, and any other stored data may be stored (DC).

FIG. 9 is a time chart (No. 3) showing multiplexing, which corresponds to the setting of FIG.

The data of the low-order group package (1) is "X1
1 ”and“ Y11 ”, and a low-order group package (2) that forms a 1: 1 redundant system with the low-order group package (1)
Data of "X12" and "Y12". The data of the low-order group package (3) that is independently multiplexed in the high-order group frame is "X3" and "Y3", and similarly, the data of the low-order group that is independently multiplexed in the high-order group frame is The data of the package (4) is "X4", "Y"
It looks like 4 ".

A read clock and a read address are given to the setting data memory, and data is sequentially read from the setting data memory addresses "00", "01", "10" and "11".

Therefore, the mounting position number "00" is read from the address "00" as the operating system mounting position number,
The mounting position number "10" is read from the address "01" as the operating system mounting position number, and the mounting position number "11" is read from the address "10" and supplied to the selector as a selection signal.

Therefore, the data of the low-order group package (1) is multiplexed in the first time slot of the high-order group frame, and the data of the low-order group package (3) is multiplexed in the first time slot of the high-order group frame. The data of the low-order group package (4) is multiplexed in the first time slot of the high-order group frame.

However, since the output from the selector 201-1 in FIG. 3 is prohibited by the operation enable information in the time slot corresponding to the address "11", the input low-order group data is selected and multiplexed in the time slot. Not done.

Therefore, the data is multiplexed as shown in "higher-order group data" in FIG. 9, and the lower-order group data is not multiplexed in the fourth time slot of the higher-order group frame.

In contrast to the setting shown in FIG. 8, in order to set the low-order group package (2) as the active package and the low-order group package (1) as the standby system package, use the settings shown in FIG. The operating system mounting position number “01” and the standby system mounting position number “00” may be set to the address “00” of the setting data memory.

Also, the data of the low-order group package (3) is multiplexed into the third time slot of the high-order group frame, and the data of the low-order group package (4) is multiplexed into the second time slot of the high-order group frame. Sets "11" as the operating system mounting position number in the setting data memory address "01", and sets the setting data memory address "1".
It is sufficient to set "10" as the operating system mounting position number to "0", and by this setting, the time slot in which the low-order group data is not multiplexed can be arbitrarily selected.

FIG. 10 shows an example of setting data in the setting data memory (No. 4), in which the number of time slots in the high-order group frame is 4 and the number of low-order group packages is mounted, except that the preconditions so far are temporarily removed. 8. Low-order group package (1) and low-order group package (2), low-order group package (3) and low-order group package (4), low-order group package (5) and low-order group package (6) , A case of forming a combination of a 1: 1 redundant system with the low-order group package (7) and the low-order group package (8).

In this case, the number of low-order group packages mounted is 8
Therefore, the operating system mounting position number and the standby system mounting position number require 3 bits, and the address of the setting data memory may be 2 bits since the number of time slots of the high-order group frame remains 4.

Since the 1: 1 redundant system is assumed as described above, the working system mounting position number "000" and the spare system mounting position number "00" are assigned to the address "00" of the setting data memory.
1 ”, the setting data memory address“ 01 ”is the working system mounting position number“ 010 ”, and the spare system mounting position number“ 01 ”
1 ", the setting data memory address" 10 "is the working system mounting position number" 100 ", the spare system mounting position number" 10 "
1 ", the setting data memory address" 11 "is the working system mounting position number" 110 ", the spare system mounting position number" 11 "
It is sufficient to store "1".

Further, since the data of the low-order group package forming the 1: 1 redundancy system is multiplexed in all the time slots of the high-order group, "0" is set in the redundancy form information of all the addresses, and “0” may be set also in the operation enable information of the address.

In this case, although not shown, the data of the low-order group package (1) is stored in the first time slot of the high-order group frame, and the low-order group package (3) is stored in the second time slot of the high-order group frame. Data of the low-order group package (5) is multiplexed in the third time slot of the high-order group frame, and data of the low-order group package (7) is multiplexed in the fourth time slot of the high-order group frame.

Therefore, in the case of the 1: 1 redundant system, if the low-order group package having twice the number of time slots of the high-order group frame is mounted, the 1: 1 redundant system is formed in all the time slots of the high-order group frame. It is possible to use all the time slots of the high-order group frame, and the line reliability and line use efficiency can be maximized.

As described above, in the multiplexer of the present invention, even if the wiring between the low-order group package and the multiplexer is fixed, the low-order group data may not be multiplexed in a specific time slot of the high-order group frame. Including, any low-order group data can be multiplexed in any time slot of a high-order group frame.

The setting data memory control unit for setting the data for multiplexing in the setting data memory can be composed of a register for storing the setting data instructed by the central processing unit. Then, when the setting data is changed in real time, the setting data memory is configured by two-sided random access memory, and while the setting data is being written in one setting data memory in a certain high-order group frame, The setting data may be read from the other setting data memory, and writing and reading may be alternated in the next higher-order group frame.

Further, the setting data / memory control section can also be constituted by a switch group. That is, the switch group may be manually set and written as setting data in the setting data memory. In this case, since the setting data is not normally changed in real time, the setting data memory may be formed by a single-sided random access memory.

Since the technique of setting data in the setting data memory has already become general, the illustration thereof is omitted, and the description of the setting data memory control unit will be stopped to this extent.

Up to now, the data of an arbitrary low-order group package has not been multiplexed with the data of a specific low-order group package by the multiplexer of the present invention, and the data of any low-order group package can be transmitted at any time of the high-order group frame. It has been described that the slots can be multiplexed. Hereinafter, it will be described that the data multiplexed in any time slot of the high-order group frame can be separated and output to any low-order group package.

FIG. 11 shows an example of the configuration of the separation timing generation section. Again, the number of time slots in the high-order group frame is 4,
This corresponds to the case where the number of low-order group packages mounted is four.

In FIG. 11, 205-1 to 205-
6 is a logical inversion circuit, 205-7 to 205-30 are logical product circuits, 205-31 to 205-34 are logical sum circuits,
205-35 to 205-38 are selectors.

Then, the logic inversion circuits 205-1 and 20-2
The mounting position numbers U0 and U1 of the low-order group package used as the active system are supplied to 05-2, and the mounting position of the low-order group package used as the standby system to the logic inversion circuits 205-3 and 205-4. The numbers Y0 and Y1 are supplied, redundancy form information is supplied to the logic inversion circuit 205-5, operation enable information is supplied to the logic inversion circuit 205-6, and the low order group package is supplied from the AND circuit 205-27. A separation timing signal that supplies separation data to (1) is output, and a separation timing signal that supplies separation data to the low-order group package (2) is output from the AND circuit 205-28. The separation timing signal for supplying the separation data from 29 to the low-order group package (3) is output, and the AND circuit 205-30 to the low-order group package (4). They are shown as separate timing signal for supplying the separated data is outputted.

The output of the logical inversion circuit 205-1 is supplied to one input terminal of the logical product circuits 205-7 and 205-9, and the input of the logical inversion circuit 205-1 is the logical product circuit 205-8. And 205-10, and the output of the logical inversion circuit 205-2 is supplied to the other input terminals of the logical product circuits 205-7 and 205-8, and the logical inversion circuit 205- The two inputs are supplied to the other input terminals of the AND circuits 205-9 and 205-10. Then, the logic inversion circuits 205-1 and 20-5
5-2, which of the physical lower-order packages the mounting position number of the package used as a given active system corresponds to by the circuit configured by the AND circuits 205-7 to 205-10 To decode. For example, when "1" is output to the AND circuit 205-7,
The given mounting position number of the low-order group package used as the active system indicates that it corresponds to the low-order group package (1).
When "1" is output to -9 and 205-10, the mounting position numbers of the low-order group package used as the given active system are the low-order group package (2) and the low-order group package, respectively. (3) shows that it corresponds to the low-order group package (4).

The logic inversion circuits 205-3 and 205-
4. The connection of the circuits formed by the AND circuits 205-11 to 205-14 is the same as that described above, and the mounting position number used as a given backup system belongs to any physical low-order group package. Decode whether it corresponds.

Next, the output of the logical product circuit 205-11 is supplied to one input terminal of the logical product circuits 205-15 to 205-17, and the logical product circuits 205-15 to 2-5.
The AND circuit 20 is connected to the other input terminal of 05-17.
Outputs 5-8 through 205-10 are provided. And
The outputs of the logical product circuits 205-15 to 205-17 are supplied to the logical sum circuit 205-31, and the output of the logical product circuit 205-7 is also supplied to the logical sum circuit 205-31.

If the operating system mounting position number (U1 and U
When “00” is given as 0), the AND circuit 20
The output of 5-7 becomes "1" and whether this low-order group package is used independently as an active system, or whether it is combined with any other low-order group package and used as an active package. , The logical sum circuit 205-31 outputs "1" regardless of whether the logical sum circuit 205-31 is used as a backup system package of any other low-order group package.

On the other hand, when "00" is given as the mounting position numbers (Y1 and Y0) of the spare package, the logical product circuit 205-11 outputs "1" to output the logical product circuits 205-15 to 205-15. 205-17 is supplied to one input terminal. At this time, if "1" is output from the AND circuit 205-8, the AND circuit 205-15 is output.
Outputs "1", and the OR circuit 205-31 outputs "1". The logical product circuit 205-8 outputs "1" because the mounting position number (U
1 and U0) are “01”, the logical product circuit 205-15 outputs “1”, and the logical sum circuit 205-31 outputs “1”. Group package (1) is a backup system, low-order group package (2)
Indicates that it is an active system.

When the low-order group package (1) is used independently as an active system, the AND circuit 205
Since the output “1” of −7 is supplied to the logical sum circuit 205-31, the logical sum circuit 205-31 outputs “1”.
Is output, but in this case, the OR circuit 205-31 is not selected and ignored by the redundancy form information given as the selection signal of the selector.

That is, the AND circuits 205-15 to 20-20
In the circuit composed of 5-17 and the OR circuit 205-31, the low-order group package with the mounting position number "00" is paired with any other low-order group package in the 1: 1 redundant system and the operation system. It has a function of recognizing whether it is used as a package or is used as a preliminary package in combination with any other low-order group package.

Similarly, the AND circuits 205-18 to 205-2
In the circuit configured by 05-20 and the OR circuit 205-32, the low-order group package of the mounting position number "01" is paired with any other low-order group package in the 1: 1 redundant system and the operation system. Used as a package, or
The logical product circuits 205-21 to 205-23 and the logical sum circuit 205-33 have a function of recognizing which other low-order group package is used as a standby package. In the 1: 1 redundant system, the low-order group package with the mounting position number “10” is paired with any other low-order group package to be used as the active system package, or which other low-order group is used? It has a function of recognizing whether it is used as a standby package in combination with the package, and the AND circuits 205-24 to 20-20
5-26 and the OR circuit 205-34, the low order group package of the mounting position number "11" is paired with any other low order group package in the 1: 1 redundant system and the operation system. It has a function of recognizing whether it is used as a package or is used as a preliminary package in combination with any other low-order group package.

The output of the AND circuit 205-7 and the output of the OR circuit 205-31 are output by the selector 205-
35 is supplied to the input terminal of the selector 35, and the selector 205-35 is provided with information obtained by logically inverting the redundant form information.

If the redundant form information is "0", the output of the OR circuit 31 is selected in the selector 205-35, and if the redundant form information is "1", the selector 2 is selected.
In 05-35, the output of the AND circuit 205-7 is selected.

The selectors 205-36 to 205-38
Also operates similarly.

The output of the selector 205-35 is supplied to one input terminal of the logical product circuit 205-27, and the other input terminal of the logical product circuit 205-27 contains information obtained by inverting the operation enable information. Given.

Now, when the operation enable information is "0", the selector 2 in the AND circuit 205-27 is used.
The output of 05-35 is output without being masked. Conversely, when the operation enable information is "1", the output of the selector 205-35 is masked and not output in the AND circuit 205-27.

Then, the logical product circuits 205-28 to 205-2
The function of 05-30 is also the same as above.

Here, the operating system mounting position number, the standby system mounting position number, the redundant form information, and the operation enable information are sequentially read from the address corresponding to the time slot of the higher order group frame of the setting data memory. From the configuration of 11, the separation timing signal is output at the timing corresponding to the time slot of the higher-order group frame.
That is, the data multiplexed in the high-order group frame according to the stored data stored in the address corresponding to the time slot of the high-order group frame in the setting data memory is separated into an arbitrary low-order group package and output. Timing signals are generated.

Since it is assumed in FIG. 11 that the active system mounting position number and the standby system mounting position number are 2 bits, four logical product circuits forming the decoder and a circuit showing a redundant form are formed. There are three logical product circuits, but when m is an integer of 2 or more, and when the mounting position number is m bits, there are 2 ^m logical product circuits that compose the decoder, and the logical circuit that composes the circuit showing the redundant form. The number of product circuits may be (2 ^m −1).

Further, in the configuration of FIG. 11, three logical product circuits are provided in the circuit showing the redundancy form so that the redundancy form can be displayed including which low-order group package is a set. Although it is used, when it is sufficient to simply output the separation timing signal, the three logical product circuits are removed and the output of the logical product circuit 205-11 is directly output to the logical sum circuit 205-31. The output of the logical product circuit 205-12 is directly supplied to the logical sum circuit 205-32, and the logical product circuit 205
-13 output to the direct OR circuit 205-33, and output of AND circuit 205-14 to the direct OR circuit 205-34.
May be supplied to.

FIG. 12 is a truth table of the configuration of FIG. 11, which systematically represents the above operation.

Although the operation of the configuration of FIG. 11 has been generally described above, it will be explained again using the truth table of FIG.

First, when the effective low-order group data is not multiplexed in the time slot of the target high-order group frame, the operation enable information is "1", so the mounting position number (U1 and U1 U0), the mounting position numbers (Y1 and Y0) of the spare system, and the redundancy form information (therefore, the mounting position of the working package in the row where the operation enable information in the truth table of FIG. 12 is "1") No. (U1 and U0) and standby system mounting position number (Y1
And Y0) and the redundant form information column are "DC"(Don't
Care) is described. ), AND circuit 20 of FIG.
5-27 through 205-30, selector 2 of FIG.
Since the outputs of 05-35 to 205-38 are masked, the separation timing signals to the low-order group packages (1) to (4) (in FIG. 12, n is an integer from 1 to 4)
It is labeled as F (n) TIM. ), “0” indicating that the high-order group data is not separated and output is output to all the low-order group packages.

Next, when each low-order group data is multiplexed in the time slot of the target high-order group frame without forming a redundant system, the redundant form information is "1", so the spare system Regardless of the package mounting position number (hence the redundant form information of the truth table of FIG. 12 is "1")
"DC" is described in the column of the mounting position numbers (Y1 and Y0) of the operation system package in the line. ), FIG.
Selectors 205-35 through 205-38 of FIG.
The outputs of AND circuits 205-7, 205-8, 205 9 and 205-10 are selected. Therefore, the high-order group data is separated only into the low-order group package (1) at the timing of the time slot corresponding to the address in which "00" is written as the mounting position number of the active package,
The separation timing signal "1" which means output is output, and "0" is output as the mounting position number of the active package.
At the timing of the time slot corresponding to the address in which "1" is written, the separation timing signal "1" is output only to the low-order group package (2), and "10" is written as the mounting position number of the active package. The separation timing signal “1” is output only to the low-order group package (3) at the timing of the time slot corresponding to the address, and the mounting position number of the active system package is “1”.
The separation timing signal "1" is output only to the low-order group package (4) at the timing of the time slot corresponding to the address in which 1 "is written, and the separation timing signal" 0 "is output to the other low-order group packages. Is output.

Further, when the low-order group package (1) is used as an active package and any other low-order group package is used as a standby system for the low-order group package (1), the setting data, "00" is written as the mounting position number of the active system package at the address corresponding to the time slot of the high-order group frame of Mori, and the mounting position number of any other low-order group package is used as the mounting position number of the standby system package. It is written. For example, when the low-order group package (2) is used as a spare system of the low-order group package (1), the mounting position of the spare-system package is set at the address corresponding to the time slot of the high-order group frame of the setting data memory. "01" is written as the number. Therefore, at this timing, the separation timing signal "1" is output to the low-order group package (1) and the low-order group package (2), and "1" is output to the low-order group package (3) and the low-order group package (4). 0 "is output. Similarly, when the low-order group package (3) is used as a backup system of the low-order group package (1), the separation timing signal “1” is divided into the low-order group package (1) and the low-order group package (3). Is output, the separation timing signal “0” is output to the low-order group package (2) and the low-order group package (4), and the low-order group package (4) is a backup system of the low-order group package (1). When used as
The separation timing signal "1" is output to the low order group package (1) and the low order group package (4), and the separation timing signal "0" is output to the low order group package (2) and the low order group package (3). Is output.

Now, the case where the low-order group package (1) is used as an active package and one of the packages is used as a standby package has been described as an example. The same applies when the package is used as an active package and the other low-order group packages are used as standby packages.

Further, for example, the low-order group package (1) is used as an active system package, the low-order group package (2) is used as a spare package package with it, and the low-order group package (3) and the low-order group package are used. The group package (4) is independently used as a package for the operation system, the data of the low order group package (1) is multiplexed in the first time slot on the high order group frame, and the low order is set in the second time slot of the high order group frame. Multiplex the data of the group package (3),
When multiplexed in the third time slot of the high-order group frame, the setting data memory address corresponding to the first time slot of the high-order group frame has "00" as the mounting position number of the active package, "01" is written as the mounting position number of the standby system package, "0" is written as the operation enable information, and "0" is written as the redundant form information, and the setting data corresponding to the second time slot of the high-order group frame is written. The memory address is "1" as the mounting position number of the active package.
“0”, “0” is written as the operation enable information, and “1” is written as the redundant form information, and the address of the setting data memory corresponding to the third time slot of the high-order group frame has the data of the operating system package. "11" as the mounting position number and "0" as the operation enable information,
"1" is written as redundant form information. Since this setting data is read at the timing of each time slot of the high-order group frame and supplied to the separation timing generation unit, the low-order group package (1) and the low-order group are generated at the timing of the first time slot of the high-order group frame. The separation timing signal "1" is output to the package (2), the separation timing signal "1" is output to the low-order group package (3) at the timing of the second time slot of the high-order group frame, and the third timing of the high-order group frame is output. The separation timing signal "1" is output to the low-order group package (4) at the time slot timing. Then, since valid data is not multiplexed in the fourth time slot of the high-order group frame, the operation enable information becomes "1" at this timing, and the separation timing is set to any low-order group package at this timing. The signal "0" is output.

That is, regardless of the redundancy form of each low-order group package, the separation timing is divided into each low-order group package according to the setting data written in the address corresponding to the time slot of the high-order group frame. A signal can be provided. Moreover, since the setting data is read from the setting data memory at the timing corresponding to the time slot of the high-order group frame in which the low-order group data is multiplexed and is supplied to the separation timing generation unit, the separation timing signal Is synchronized with the timing of the time slot of the high-order group frame in which the low-order group data is multiplexed. Therefore, it is possible to completely indicate to which low-order group package the separated data should be supplied, including not supplying the separated data to a specific low-order group package.

FIG. 13 shows an example of the structure of the separating section.

In FIG. 13, 202-1 to 202-
8 is a flip-flop.

The flip-flops 202-1 to 20-20
The data terminals 2-4 (labeled D in FIG. 13 and labeled similarly thereafter) are input with the multiplexed data supplied from the higher-order group package, and the flip-flops 202-1 to 202-1 are connected. The enable terminal (labeled EN in FIG. 13; also labeled in the following) of 202-4 is supplied with the separation timing signal (n in FIG. 13 is n in FIG. 13) supplied from the separation timing generation unit shown in FIG. LIF (n) TIM is entered as an integer of 1 to 4).

The outputs of the flip-flops 202-1 to 202-4 are supplied to the data terminals of the flip-flops 202-5 to 202-8, respectively. A latch enable signal is commonly supplied to the enable terminal of -8.

Then, the clock is commonly supplied to the clock terminals (labeled C in FIG. 13) of all the flip-flops.

FIG. 14 is a time chart of the configuration of FIG.

In FIG. 14, the data multiplexed with the higher-order group data (labeled as HIF data in the figure) is X, Y, and Z, and n is an integer of 1 to 3, respectively, and the higher-order group frame is used. The data multiplexed in the n-th time slot is marked with the subscript "n". Then, it is assumed that effective low-order group data is not multiplexed in the fourth time slot of the high-order group frame.

In FIG. 14, the low-order group package (1) and the low-order group package (3) form a 1: 1 redundant system set, and the low-order group package (1) or the low-order group package (3). Data of the low order group frame is multiplexed into the second time slot of the high order group frame, data of the low order group package (2) is independently multiplexed into the third time slot of the high order group frame, and data of the low order group package (4) is independently multiplexed. In the first time slot of the higher-order group frame, the data is multiplexed. Therefore, the separation timing signal “1” for the low-order group package (1) and the low-order group package (3) is output at the timing of the second time slot of the high-order group frame, and the separation timing for the low-order group package (2) is output. The signal "1" is output at the timing of the third time slot of the high-order group frame, and the separation timing signal "1" for the low-order group package (4) is output at the timing of the first time slot of the high-order group frame. .

Since the separation timing signal is supplied to the enable terminals of the flip-flops 202-1 to 202-4 of FIG. 13 to fetch the high-order group data at the clock,
Flip-flops 202-1 to 202-4 of FIG.
The output of "FF" in FIG.
Output of 202-n ". The flip-flops 202-1 to 202-4 of FIG. 13 obtained here are obtained.
13 do not have the same phase, the common latch enable signal is supplied to the enable terminals of the flip-flops 202-5 to 202-8 of FIG. 202-4
Capture the output of. The data that is taken in and output to each of the low-order group packages (1) to (4) is “LIF (n) data” in the figure, where n is an integer from 1 to 4.
As seen from this, the data multiplexed in the second time slot of the high-order group frame is separated and output to the low-order group package (1) and the low-order group package (3), and the low-order group package (2) , The data multiplexed in the third time slot of the higher-order group frame is separated and output,
It is obvious that the data multiplexed in the first time slot of the high-order group frame is separated and output to the low-order group package (4).

The above setting is only one randomly selected setting example. Therefore, by combining the separation timing generation section of FIG. 11 and the separation section of FIG. 13, separation into a specific low-order group package is performed. It is obvious that the low-order group data multiplexed in the arbitrary time slot of the high-order group frame can be separated and output to the arbitrary low-order group package, including not outputting the data.

That is, according to the first aspect of the invention, the data of any low-order group package can be multiplexed in any time slot of the high-order group frame, and the data multiplexed in any time slot of the high-order group frame can be arbitrarily changed. There is provided a multiplexing device capable of separating and outputting to a low-order group package.

As a result, even if the wiring between the low-order group package and the multiplexer is fixed, the data of the low-order group package can be accommodated in the high-order group in an arbitrary redundant form. It is possible to change the redundancy mode by the low-order group package even after the operation of the multiplexer is started. For example, four low-order group packages are made into two sets, one low-order group package of each set is used as an active system, and the other low-order group package is used as a standby system. It will be possible to freely make changes such as making it an independent operational system.

FIG. 15 is a block diagram of the principle of the present invention (part 2).
Is.

In FIG. 15, 10-1 is a low-order group package (1), 10-2 is a low-order group package (2), 10
-3 is a low-order group package (3), 10-4 is a low-order group package (4).

Further, 201 is a multiplexing unit for multiplexing the low-order group data into the high-order group frame, 202 is a separation unit for separating the low-order group data multiplexed in the high-order group frame, 203
Is a setting data memory control unit for controlling the setting data memory, such as writing data to the setting data memory, 20
Reference numeral 4 denotes a setting data memory for storing setting data at an address corresponding to a time slot of a high-order group frame, 205
Is a separation timing generation unit (indicated as a separation TIM generation unit in the figure) that determines the timing of which low-order group package to which the low-order group data multiplexed in the high-order group frame is output. The mounting position number adding unit for adding the mounting position number of the low-order group package that outputs the low-order group data to the low-order group data, and 207 is the low-order group package added to the output of the multiplexing unit 201. The mounting position number monitoring unit that compares and monitors the mounting position number of the mounting position number supplied from the setting data memory 204 to the multiplexing unit 201, and these components configure the multiplexing device 20a.

Further, 30 is a high-order group package.

The feature of the configuration of FIG. 15 is that the wiring of each low-order group package and the multiplexer is fixed, but the data of which low-order group package is multiplexed in which time slot of the high-order group frame. Which low-order group data multiplexed in the high-order group frame is output to which low-order group package can be arbitrarily set by the data stored in the setting data memory. The low-order group data is multiplexed by adding the mounting position number of the next-group package, and the low-order group package mounting position number added to the multiplexed data and the low-order group supplied from the setting data memory to the multiplexing unit. By comparing and monitoring the mounting position numbers of the group packages, it is possible to verify whether the setting data memory or the multiplexing unit is operating normally. That is, the feature that the reliability of the multiplexing device can be made factory is added.

The configuration of FIG. 15 will be described below centering on the mounting position number adding unit 206 and the mounting position number monitoring unit 207.

FIG. 16 shows an example of the structure of the mounting position number addition section.

In FIG. 16, 206-1 to 206-
Reference numeral 4 is a selector.

Data of the low-order group package (n) (LIF in the figure) is input to one input terminal of each of the selectors 206-1 to 206-4, where n is an integer from 1 to 4.
(N) Data is labeled. ) Is supplied to the other input terminals of the selectors 206-1 to 206-4, and the mounting position numbers “00”, “01”, “10” unique to the low-order group packages (1) to (4), respectively. “,” “11” are supplied.

Then, the selectors 206-1 to 206
An additional timing signal is commonly given to the selection signal terminal of -4, and the data in which the mounting position number is added to the low-order group data is output from the selectors 206-1 to 206-4.

FIG. 17 is a time chart of the configuration of FIG.

It is assumed that the low-order group data is given as "LIF (n)" in FIG. 17, where n is an integer from 1 to 4. That is, it is assumed that the low-order group data is multiplexed in the effective data area of the low-order group frame, and the low-order group frame has an empty area.

Here, there is a case where the original low-order group frame is filled with valid data and there is no empty area, but in this case, a clock for multiplexing valid data in the low-order group frame is used. The above assumptions are not specific to a particular case, as free space can be made faster than the original clock.

It is easy to generate the additional timing signal in synchronization with the empty area of the low-order group frame. In this case, the additional timing signal is "1" in the empty area and the additional timing signal is "0" in the valid data area.

The additional timing signal is the selector 2 of FIG.
Since they are supplied to the selection signal terminals of 06-1 to 206-4, the low-order group data are selected and output in the effective data area of the low-order group data, and fixedly given to each selector in the empty area. Mounting position number "00",
Since "01", "10", and "11" are selected and output, the output of the mounting position number addition unit for each low-order group data is as the lower four data in FIG. The output of the adder is supplied to the multiplexer.

FIG. 18 shows the input / output frame of the multiplexer.
Format.

As described with reference to FIG. 17, the low-order group data added with the mounting position number, which is an input of the multiplexing unit, is shown in FIG.
It is as shown in (a).

When these are multiplexed in the multiplexing unit, it is easy to collectively multiplex the data in the valid data area and collectively multiplex the added mounting position numbers. When multiplexed in this way, the output of the multiplexing section is as shown in FIG.

Although it is assumed that the low-order group data to which the mounting position number is added can be multiplexed to the high-order group frame, the low-order group data before adding the mounting position number is multiplexed to the high-order group frame. If there is no free space at all, the above premise is not a special case because a free space can be easily created in the higher-order group frame by slightly increasing the speed of the multiplexing clock.

FIG. 19 shows an example of the structure of the mounting position number monitoring section, which also shows a setting data memory.

In FIG. 19, 207-1 is a serial-parallel conversion circuit, 207-2 and 207-3 are exclusive OR circuits, 207-4 is an OR circuit, and 207-5 is an AND circuit. The mounting position number monitoring unit is configured by the components.

Reference numeral 204 is a setting data memory.

The serial-parallel conversion circuit 207-1 performs serial-parallel conversion on the output of the multiplexing unit and extracts only the mounting position number as a 2-bit parallel signal.

On the other hand, the mounting position number is also read from the setting data memory 204 as a 2-bit parallel signal by the clock synchronized with the serial-parallel conversion clock.

The mounting position number fetched in parallel from the serial-parallel conversion circuit 207-1 and the mounting position number set in the setting data memory read in parallel from the setting data memory 204 are: , The corresponding bits are supplied to the same exclusive OR circuit.

The exclusive OR circuit operates when two inputs are different, that is, the mounting position number read from the setting data memory 204 or the serial-parallel conversion circuit 207-1.
"1" when the mounting position number read from is incorrect
Is output. Then, the two exclusive OR circuits 207
-2 or 207-3 outputs "1",
The OR circuit 207-4 outputs "1".

A check timing signal that becomes "1" is supplied to the logical product circuit 207-5 at the timing when the output of the logical sum circuit 207-4 and the mounting position number are taken out, and the logical sum is added to the check timing. It is verified whether "1" is output from the circuit 207-4. When it is determined that "1" is output from the logical sum circuit 207-4 at the check timing, it means that there is a problem in the operation of the multiplexer, so the logical product circuit 207-5 outputs an alarm. To do.

When the number of bits of the mounting position number is larger, the number of exclusive OR circuits may be made equal to the number of bits of the mounting position number.

FIG. 20 is a time chart of the configuration of FIG.

In this case, it is assumed that the mounting position number is "00" and only one bit of the setting data read from the setting data memory becomes "1" at the previous check timing. Therefore, "1" is output from the AND circuit 207-5 at the previous check timing, indicating that the operation of the multiplexer is defective.

That is, according to the second invention, the data of any low-order group package can be multiplexed in any time slot of the high-order group frame, and the data multiplexed in any time slot of the high-order group frame can be changed arbitrarily. There is provided a multiplexing device capable of separating and outputting to a low-order group package, and testing the operation of the multiplexing device.

By the way, as described above, in the above description, the redundant form of the low-order group package is a set of two.
One low-order group package is used as an active system and the other is used as a standby system. 1: 1 redundancy system or one low-order group package is used as an independent active system to set up a spare package. The description has been limited to systems that do not and combinations thereof. This was to simplify the explanation by limiting the redundant form.

However, the technique of the present invention can be applied without limiting the redundant form to the above. The reason for this will be described below.

Now, the low-order group package (1) and the low-order group package (2) are used as an active system, and the low-order group package (3) is used as a common standby system for these two low-order group packages. Consider a redundant form that does, that is, a 2: 1 redundant system.

In this case, the multiplexing unit multiplexes the data of the low-order group package (1) and the low-order group package (2) into the high-order group frame, and then the low-order group package (1) or the low-order group package (2). The data of the low-order group package (3) given the same data as the above is not multiplexed in the high-order group frame.

The demultiplexing unit demultiplexes and outputs the two multiplexed low order group data into the low order group package (1) and the low order group package (2) according to the set mounting position numbers. Any low-order group data is separated and output to the low-order group package (3).

Therefore, this 2: 1 redundant system can be considered formally as one of the following redundant forms.

The low-order group package (1) is a working package and the low-order group package (3) is a standby system, and a 1: 1 redundant system and a low-order group package (2)
A combination of non-redundant systems in which is an independent operating system package. A low-order group package (2) is an operating system package, and a low-order group package (3) is a standby system package. A combination of non-redundant systems in which the low-order group package (1) is an independent active package, while the low-order group package (1), the low-order group package (2), and the low-order group package (3) are active And a low-order group package (4) used as a backup system of these three low-order group packages, that is, a 3: 1 redundant system is You can think of either.

The low-order group package (1) is a working package, and the low-order group package (4) is a standby system 1: 1 redundant system and the low-order group package (2)
And a combination of non-redundant systems in which the low-order group package (3) is an independent active system package, the low-order group package (2) is an active system package, and the low-order group package (4) is a standby system package. 1: 1 redundant system combined with a non-redundant system in which the low-order group package (1) and the low-order group package (3) are independent active packages The low-order group package (3) is an active package 1: 1 redundant system in which the low-order group package (4) is a standby system package and no redundancy in which the low-order group package (1) and the low-order group package (2) are independent operating systems Combination of systems In other words, n is an integer, and n low-order group packages are used as operating system packages. One low-order group package is used as a common standby system package of these n low-order group packages. Use for the system, i.e., n: 1 redundancy system is always 1: 1 equivalent to a combination of the redundant system and without redundancy system.

This means that the setting data to be set in the setting data memory may be the same for any type of redundant system, and the separation timing generation unit for supplying the separation timing signal to the separation unit may be the same circuit. To do. That is, the present invention can be commonly applied to any form of redundant system.

The setting data determines which low-order group package data to be given to the low-order group package used as the backup package. If a failure occurs in the low-order group package used as the active package and it becomes necessary to switch to the low-order group package used as the standby package, the switching control device This information may be transferred to the setting data memory control unit provided in the multiplexing device of the present invention to change the data set in the setting data memory.

In the above description, the number of low-order group packages mounted was consistently set to four, and the number of time slots in a high-order group frame was set to four, but this is not a limitation of the technique of the present invention.

If the number of packages of the low-order group is m (m is an integer of 2 or more) and the number of time slots of the high-order group frame is n (n is an integer of 2 or more), the bit of the mounting position number is set. The number may be an integer of log ₂ m or more, and the time slot address may be an integer of log ₂ n or more.
Further, preferably, if the number of low-order group packages mounted is m (m is an integer of 2 or more) and the number of time slots of a high-order group frame is n (n is an integer of 2 or more), the number of mounting position bits is set. The number may be a minimum integer of log ₂ m or more, and the time slot address may be a minimum integer of log ₂ n or more.

In the above description, the case where the number of mounted low-order group packages and the number of time slots of high-order group frames are consistently taken up, but the number of mounted low-order group packages and the number of time slots of high-order group frames are consistent. Equality is not mandatory. For example, when it is necessary to simultaneously multiplex some additional bits when multiplexing low-order group data into a high-order group frame, the number of time slots in the high-order group frame may be set larger than the number of low-order group packages mounted, or , When the data of all low-order group packages installed at a certain point of time are not simultaneously multiplexed in the high-order group frame, the number of time slots in the high-order group frame may be smaller than the number of low-order group packages installed. This is because there is no restriction on the setting of data in the setting data memory of the multiplexer of the present invention.

Finally, in the principle configuration of the present invention shown in FIGS. 1 and 15, the package of the multiplexer and the high-order group package are shown as one sheet, but it is usually a duplex system. Is. Even in such a case, the technique of the present invention can be applied without any change. That is, a distribution circuit is provided at the output of the multiplexer of the low-order group package to send the same data to the duplicated multiplexer, and a selector is provided at the input of the multiplexer of the low-order package to duplicate the data. Since it suffices to combine a publicly available technique of selecting and receiving data from one of the multiplex devices, the multiplex devices themselves do not need to be modified.

[0195]

As described in detail above, according to the first invention,
Data in any low-order group package can be multiplexed into any time slot in a high-order group frame, and data multiplexed in any time slot in a high-order group frame can be separated and output to any low-order group package. There is provided a multiplexing device capable of

As a result, even if the wiring between the low-order group package and the multiplexer is fixed, the data of the low-order group package can be accommodated in the high-order group in an arbitrary redundant form. It is possible to change the redundancy mode by the low-order group package even after the operation of the multiplexer is started. For example, four low-order group packages are made into two sets, one low-order group package of each set is used as an active system, and the other low-order group package is used as a standby system. You will be able to freely make changes that make it an independent operational system.

Further, according to the second invention, the data of any low-order group package can be multiplexed in any time slot of the high-order group frame, and the data multiplexed in any time slot of the high-order group frame can be arbitrarily changed. There is provided a multiplexing device capable of separating and outputting to a low-order group package, and testing the operation of the multiplexing device.

Moreover, the technique of the present invention is a highly flexible technique that can be applied to an arbitrary redundant form of a low-order group package.

Therefore, it is possible to deal with an arbitrary redundant form, and to flexibly deal with any contradictory preconditions of the line design, that is, the line reliability is prioritized or the line usage efficiency is prioritized. As a result, the communication system can be operated very flexibly,
Be able to contribute to the development of communication systems.

[Brief description of drawings]

FIG. 1 is a principle configuration diagram (1) of the present invention.

FIG. 2 is a prerequisite for explaining the operation of the present invention.

FIG. 3 is a configuration example of a multiplexing unit.

FIG. 4 is an example (1) of setting data in a setting data memory.

FIG. 5 is a time chart showing multiplexing (part 1).

FIG. 6 shows an example of setting data in the setting data memory (part 2).

FIG. 7 is a time chart showing multiplexing (part 2).

FIG. 8 is an example (3) of setting data in the setting data memory.

FIG. 9 is a time chart showing multiplexing (part 3).

FIG. 10 shows an example of setting data in the setting data memory (part 4).

FIG. 11 is a configuration example of a separation timing generation unit.

FIG. 12 is a truth table of the configuration of FIG.

FIG. 13 is a configuration example of a separation unit.

FIG. 14 is a time chart of the configuration of FIG.

FIG. 15 is a principle configuration diagram of the present invention (No. 2).

FIG. 16 is a configuration example of a mounting position number addition unit.

FIG. 17 is a time chart of the configuration of FIG.

FIG. 18 shows an input / output frame format of the multiplexer.

FIG. 19 is a configuration example of a mounting position number monitoring unit.

FIG. 20 is a time chart of the configuration of FIG.

FIG. 21 is a configuration (1) of a conventional multiplexing device.

FIG. 22 shows a configuration of a conventional multiplexing device (No. 2).

FIG. 23 is a diagram showing an operation of the configuration of FIG. 22.

[Explanation of symbols]

10-1 Low-order group package (1) (LIF (1)) 10-2 Low-order group package (2) (LIF (2)) 10-3 Low-order group package (3) (LIF (3)) 10- 4 Low-Order Group Package (4) (LIF (4)) 20 Multiplexer 20a Multiplexer 20b Multiplexer 20c Multiplexer 20c Multiplexer 30 High-Order Group Package (HIF) 201 Multiplexer 201-1 Selector 201-2, 201- 3 three-state buffer 202 separation units 202-1, 202-2, 202-3, 202-4, 2
02-5, 202-6, 202-7, 202-8 Flip-flop 203 Setting data memory control unit 204 Setting data memory 205 Separation timing generation unit (separation TIM generation unit) 205-1, 205-2, 205 -3, 205-4, 2
05-5, 205-6 logic inversion circuits 205-7, 205-8, 205-9, 205-10,
205-11, 205-12, 205-13, 205-
14, 205-15, 205-16, 205-17, 2
05-18, 205-19, 205-20, 205-2
1, 205-22, 205-23, 205-24, 20
5-25, 205-26, 205-27, 205-2
8, 205-29, 205-30 AND circuit 205-31, 205-32, 205-33, 205-
34 OR gates 205-35, 205-36, 205-37, 205-
38 selector 206 mounting position number adding section 206-1, 206-2, 206-3, 206-4 selector 207 mounting position number monitoring section 207-1 serial-parallel conversion circuit (S / P) 207-2, 207-3 Exclusive OR circuit 207-4 Logical OR circuit 207-5 Logical product circuits 210-1, 210-2 Selector (SEL) 211-1, 211-2 Distribution circuit (DIS) 212 Parallel-serial conversion circuit (P / S) ) 213 serial-parallel conversion circuit (S / P) 214 switching logic circuit 215 parallel-serial conversion circuit (P / S) 216 serial-parallel conversion circuit (S / P)

─────────────────────────────────────────────────── --- Continuation of the front page (56) References JP-A-6-29943 (JP, A) JP-A-9-93247 (JP, A) JP-A-63-36628 (JP, A) JP-A-6- 104859 (JP, A) JP-A-1-273447 (JP, A) JP-A-63-36628 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) H04J 3/00 H04J 3 / 04

Claims (2)

(57) [Claims] 1. A multiplexer for multiplexing low-order group data into a high-order group frame and separating data multiplexed in a high-order group frame into a low-order group frame, the time corresponding to 1 bit of the low-order group data. Using the number assigned to the time slot corresponding to 1 bit of the high-order group frame in the slot as an address, the mounting position number of the active and standby low-order group packages and the low-order group data effective for the time slot of the high-order group frame are stored. The operation enable information indicating whether or not it is multiplexed, the setting data memory for storing the redundant form information indicating the redundant form of the low-order group package, and the low order according to the setting data read from the setting data memory. A multiplexing unit that multiplexes group data, and multiplexes into a higher-order group frame according to setting data read from the setting data memory. A separation timing generation unit that selects a low-order group package that should output low-order group data, and predetermined low-order group data multiplexed in a high-order group frame according to the separation timing signal output by the separation timing generation unit. 2. A multiplexing device, comprising: a separating unit for separating and outputting to a low-order group package. 2. The multiplexing device according to claim 1, further comprising: a mounting position number adding section for adding a mounting position number of a low order group package outputting the low order group data to the low order group data, A mounting position number monitoring unit for comparing and monitoring the mounting position number of the low-order group package added to the output of the unit and the mounting position number of the low-order group package read from the setting data memory. And a multiplexing device.