JPH02166859A - Flexible multi-junction system - Google Patents

Abstract

PURPOSE:To flexibly set a communication destination by executing the specification of plural branching time slots, the specification of the order of priority of an inputting transmission path and the recognition of S-bit information through a CPU. CONSTITUTION:Data to be inputted from a data interface 10 is recorded in the input memory of #1 of TSW 30 and the data are written in the output memory of #2. Further, similar data are branched off and sent out to #2 and #3 by writing into the output memory of #3. The data of #2 and #3 out of the data close to the transmission path side are recorded in the input memory, and when the S bit of #2 is '1' and the S bit of #3 is '0' the data of #2 are outputted to the interface 10, since a CPU 40 selects the content of the input memory of #2 and writes into the output memory of #1. The order of priority is previously registered in the CPU 40, for instance, the order of priority is given in the sequence of a transmission path 1, a transmission path 2, a transmission path 3 and a transmission path 4.

Description

[Detailed Description of the Invention] [Summary] In a digital multiplexing device that multiplexes and communicates digital signals, regarding a flexible multi-junction method that simultaneously communicates with multiple parties, by controlling the multi-junction function with a control device, The aim is to provide a flexible multi-junction method that makes it possible to easily set multiple communication destinations and to select and connect one input from multiple transmission paths. A data interface that interfaces with the transmission line, a transmission line interface that interfaces with the transmission line, and a branch that branches by reading the data input from the data interface multiple times for a specified time slot, and the data input from the transmission line interface. specifies the TSW to be selected and connected, the read time slot at the time of branching, the priority order, and It is equipped with a control device that performs line settings from extraction of control bit information, and performs branching by reading data manually input from the data interface multiple times in time slots specified by the control device.
Data is sent to multiple specified transmission paths, and data input from the transmission paths is selected and connected based on the priority order of the transmission paths determined by the control device and the control bit information included in the input data. do.

[Industrial application field]

The present invention relates to a flexible multi-junction method for simultaneously communicating with a plurality of parties in a digital multiplexing device that multiplexes and communicates digital signals.

Digital multiplexing devices that perform communication by multiplexing digital signals also transmit the same data to multiple parties,
A multi-junction method is required to transmit data from multiple parties by selecting one of them and connecting to it.

The conventional multi-junction method uses hardware to perform multi-junctions, so the communication destination is fixed, and when changing the communication destination, there are problems such as the change work is complicated and the amount of hardware is large. be.

Therefore, there is a need for a flexible multi-junction that allows easy setting of communication destinations and requires a small amount of hardware.

[Conventional technology] FIG. 3 shows a block diagram explaining a conventional example.

The configuration of FIG. 3 includes a data interface 10 that interfaces with a data terminal, transmission line interfaces 21 to 2n that interface with a transmission line, and a TSW 30a that specifies the communication destination of each time slot in a point-to-point manner. , a branch circuit 51 that branches and transmits input data to a designated transmission path.
a and a multi-junction section 50a consisting of a switch circuit 52a that monitors a control bit (hereinafter referred to as S bit) and opens the gate when S=1.

In the above configuration, data from the data terminal is input to the TSW 30a via the data interface 10, and the TSW 30a is used to branch the data to a specified communication destination.
Branch circuit 51a of multi-junction section 50a from a
Enter.

The branch circuit 51a branches to a specified number of communication destinations, and sends the branched data to the transmission lines 1 to n via the time slots of the TSW 30a corresponding to the respective transmission line interfaces 21 to 2n.

Data input from transmission lines 1 to n are each sent to TSW3.
It connects to the switch circuit 50a via 0a, monitors the S bit in the data, and connects the transmission path where the S bit is 1.

[Problem to be solved by the invention]

In the conventional example described above, branching to multiple transmission lines and selective connection from multiple transmission lines are performed by hardware, so changing the communication destination is complicated and requires a dedicated multi-junction panel. As a result, the mounting space becomes larger and the cost also increases.

The present invention enables easy setting of multiple communication destinations and selection and connection of one input from multiple transmission paths by controlling the multi-junction function with a control device (hereinafter referred to as CPU). The purpose of this study is to provide a flexible multi-junction system that enables

[Means to solve the problem]

FIG. 1 shows a block diagram illustrating the invention in detail.

10 and 21 to 2 in the embodiment block diagram shown in FIG.
n is a data interface and a transmission line interface having the same configuration and functions as those explained in FIG.
The TSW has a function of selectively connecting data input from the transmission line interfaces 21 to 2n based on predetermined priorities and S bit information. This is a CPU that performs specification, designation of transmission path priority, and selection and connection of transmission paths based on S bit information, and is a means for solving this problem by providing such means.

[For production]

Data from the data terminal is input to the TSW 30 via the data interface 10. The CPU 40 specifies a plurality of time slots to branch, and performs branching by reading the input data to the specified plural time slots, and the data input from the transmission line side is sent to the TSW 30 via the transmission line interfaces 21 to 2n. send to CP
U40 selects one of the transmission path priorities and S bit information determined in advance and connects it.

Since the CPU 40 specifies the plurality of time slots to be branched, specifies the priority order of input transmission lines, and recognizes the S bit information, it is possible to perform multi-junction flexibly.

〔Example〕

The gist of the present invention will be specifically explained below with reference to the embodiments shown in FIGS. 1 and 2.

FIG. 1 is a block diagram explaining the present invention in detail. FIG. 2 is a block diagram explaining the line setting within the TSW of the present invention. Note that the same reference numerals indicate the same objects throughout the figures.

In the embodiment of the present invention shown in FIG. 1, the data input to the TSW via the data interface 10 is sent multiple times in designated time slots under the control of the CPU 40 in order to branch and send the same data to multiple communication destinations. The data input from the transmission path side is read and the transmission path to be connected is determined based on the priority order and S bit information set in advance.

Figure 2 is a diagram explaining the line setting situation within the TSW, and here, as an example, the data of #1 is branched and sent to #2 and #3, and the input line is selected and connected to #2. It shows.

Although the number of branches is assumed to be two to simplify the explanation, the operation is the same even if there are three or more branches.

That is, the data input from the data interface 10 is recorded in the #1 input memory of the TSW 30, and the data is written in the #2 output memory.

Furthermore, by writing to the output memory of #3, the same data is branched and sent to #2 and #3.

Data from the transmission line side is recorded in the respective input memories of #2 and #3, but here the S bit of #2 is "1" and the S bit of #3 is "0". Then, the CPU 40 selects the contents of input memory #2 and
The data of #2 is output to the data interface 10 in order to write to the output memory of #1.

It is also assumed that the priorities are registered in advance in the CPU 40, and are prioritized in the order of transmission path 1, transmission path 2, transmission path 3, and transmission path 4, for example. If the S bits of transmission path 2 and transmission path 4 become "1" in this state, transmission path 2 is ranked higher than transmission path 4, so transmission path 2 is selected and connected.

In this example, the branch destination is set to 4, but the effect of the present invention is the same even if the branch destination is other than 4.

〔Effect of the invention〕

According to the present invention as described above, by controlling the multi-junction by the CPU, it becomes possible to flexibly set communication destinations, and this can be realized economically and in a space-saving manner.

[Brief explanation of the drawing]

FIG. 1 is a block diagram explaining the present invention in detail, FIG. 2 is a diagram explaining the line setting within the TSW of the present invention, and FIG. 3 is a block diagram explaining the conventional example. In the figure, 1 and 1a are digital multiplexers, 10 is a data interface, 21 to 2n are transmission line interfaces, and 30.30a is a TSW. 40 is a CPU, 50a is a multi-junction section, 51a is a branch circuit, 52a is a switch circuit, #1 #2 #3 #1 #2 #3 FIG. 2 A block diagram explaining the present invention in detail FIG. Explanatory block diagram Figure 3

Claims (1)

[Claims] A data interface (10) for interfacing with a data terminal; a transmission line interface (21 to 2n) for interfacing with a transmission line; and specifying data input from the data interface (10). Branching is performed by reading the specified time slot multiple times, and the transmission path interface (21 to 2
4) The input data is selected and connected to the TSW (30) according to the predetermined priority order of the transmission path and the control bit information included in the input data, and read out at the time of branching. A control device (40) that performs line setting by specifying time slots, specifying priorities, and extracting control bit information, and the control device (40) specifies data input from the data interface (10). Branching is performed by reading multiple times in a time slot, data is sent to multiple specified transmission paths, and the data input from the transmission paths is determined according to the priority order of the transmission paths determined by the control device (40) and the input data. A flexible multi-junction method that selects and connects based on control bit information contained in the.