JPS6224799A - Terminal equipment for time division multiplex transmission system - Google Patents

Abstract

PURPOSE:To set automatically an address at transmission by deciding an own address by a random number to send a control signal, executing the content of the control signal received when a destination address is coincident with the own address and eliminating the own address by the random number after the execution. CONSTITUTION:In calling from a terminal equipment 1' to a master equipment 2, a transmission control means 7 outputs a transmission request signal to trigger a random number generator 8. The triggered random number generator 8 updated the random number and the random number data is outputted to the means 7. The means 7 uses the random number as the own address SA to send a control signal comprising packets to the master set via a control signal line 3. The terminal equipment 1' fetches the control data of a data part D and executes the content when the own address SA sent to the master set 2 is coincident with a destination address TA in the control signal from the master equipment 2. Then after the transmission/reception of data with the master equipment 2 is finished, the address by the random number is eliminated.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a terminal device used in a time division multiplex transmission system that transmits control signals using packets having an address code of a called party.

[Background Art 1] FIG. 3 shows a schematic configuration diagram of an information transmission system using time-division transmission, in which a control signal llA3 for exchanging control data between each terminal device 1 and a sharp instrument 2, A signal line consisting of audio signal #14 for connecting the telephone I/A to each terminal device 1 is connected.

The terminal device 1 is like a telephone, and can be connected to or disconnected from the audio signal line 4 according to a control command. These network controls are all done by Sharp 2.
In order to exchange control information between the sharp device 2 and the terminal device 1, packets as shown in FIG. 2 are sent over the control signal line 3.
exchanged via.

As shown in the t144 diagram, when a packet transmits a control signal, its own address SA is placed at the beginning, followed by the destination address TA, and then the address AT. carries a byte force mounter BC indicating the data representation of the following data section. The data portion has a variable length and carries predetermined data between the sharp device 2 and the terminal device 1. After this data section, a 7-frame check code FCC such as a checksum and CPC code is placed to detect transmission errors in the entire get.

By the way, in such a system, when the terminal device 2 performs network control of the telephone network, the terminal device 1 connects the audio signal line 4.
When you want to use the terminal device 1, request data is sent to the sharp device 2 via the control signal line 3, and if the voice signal line 4 is usable, the sharp device 2 transmits the voice signal line 4 to the terminal device 1. control data for making the connection.

By the way, in order to exchange such data between the sharp instrument 2 and the terminal device 1, it is necessary to assign different addresses to the terminal devices 1 using an address setting unit such as a switch provided for each terminal device 1. be.

However, as shown in FIG.
There is a mobile terminal device 1'' that is connected via the fixed terminal device 1, and an address cannot be set in advance for such a mobile terminal device 1''. There was a problem in that it had to be configured one by one.

[Object of the Invention] The present invention has been made in view of the above-mentioned problems, and its purpose is to provide a time division multiplex transmission system that eliminates the need to set addresses for terminals.

[Disclosure of the Invention 1] The present invention transmits a control signal including the calling side's own address and the other party's address from the calling side by time division multiplexing, and the called side determines the calling side's address from the self address. A time division multiplex transmission system that transmits a control signal to the caller by time division multiplexing, which includes a random number generation means, determines a self address using a random number obtained by the random number generation means, and generates a control signal including the self address. Transmission control means is provided, which executes the content of the control data of the received control signal when the destination address in the transmitted and received control signal matches the self-address, and erases the self-address using a random number after the execution. This is a characteristic feature.

This will be explained below using examples.

IK FIG. 1 shows the circuit configuration of a mobile terminal 1'' of this embodiment, in which a random number generator 8 is attached to the transmission control means 7. And the terminal device 1 is the third
The system shown in the figure is connected via an information outlet 6.

When calling the sharp tool 2 from the terminal 1, the transmission control means 7 outputs a transmission request signal to trigger the hole number generator 8. The triggered random number generator 8 generates an updated random number value and outputs the random number data to the transmission control means 7. The transmission control means 7 uses this random number as its own address SA, and transmits a control signal consisting of a packet as shown in FIG. 2(a) to the sharpener 2 via the control signal line 3.

When the sharp device 2 determines that the destination address TA of the sent control signal matches the 7 address of the sharp device 2, it determines the address of the terminal device 1 from the sent own address SA, Read the data in the data section. For example, if the terminal device 1' is sending data requesting connection of an audio signal, the device 2 creates control data to connect the terminal device 1' to the audio signal line 4, and the data shown in FIG. A control signal consisting of a packet shown is sent to the terminal device 1' via a control signal M3. Here, the self-address SA' in FIG. 2(b) corresponds to the address of the sharp instrument 2, and the destination address TA' corresponds to the self-address SA created by the terminal device 1 from random numbers, and the data section D ' is loaded with the above control data.

Now, in the terminal device 1'', in the control signal from the sharp device 2, the destination address TA'' is the own address SA sent to the sharp device 2.
If they match, the control data in the data section is fetched and executed.

Now, after data exchange with the sharp tool 2 is completed, the address based on the random number is deleted. Therefore, there is no problem with transmission from fixed terminals 1 having the same address. Also, when it is necessary to transmit data from the terminal device 1 to the sharp device 2 again, at the time of the transmission request, the random number generator 8 updates and generates a random number to create a new address.

[Effects of the Invention] The present invention includes a random number generation means, determines its own address using a random number obtained by the random number generation means, transmits a control signal including the self address, and determines the other party's address in the received control signal. Since the present invention is equipped with a transmission control means that executes the contents of the control data of the control signal received when the address matches the self-address, and erases the self-address based on a random number after the execution, the address can be automatically set at the time of transmission. - Users do not need to set addresses at all to avoid duplicate addresses, making it easy to use.
This is particularly useful for mobile terminal devices that are installed on the move.

[Brief explanation of drawings]

Fig. 1 is a circuit configuration diagram of a terminal device according to an embodiment of the present invention, Fig. 2 is a 7-bit diagram of a packet for explaining the operation of the same, and Fig.
The figure is a block diagram of the entire system that is the basis of the present invention, and Figure 4 is a 7-bit diagram of the same control signal packet.
, 1 is a terminal device, 2 is a sharp device, 3 is a control signal line, 4 is an audio signal line, 7 is a transmission control means, 8 is a random number generator, S A,
SA' is the self address, TA and TA' are the destination addresses, and D is the data part. Agent Patent Attorney Ishi 1) Chief 7 Figure 3 Figure 4

Claims (1)

[Claims] (1) The calling side transmits a control signal including the calling side's own address and the other party's address by time division multiplexing, and the called side determines the calling side's address from the self address and transmits the control signal accordingly. A time division multiplex transmission system that transmits data to a caller by time division multiplexing, which includes a random number generation means, determines its own address using a random number obtained by the random number generation means, and transmits and receives a control signal containing the self address. A time-sharing device characterized by comprising a transmission control means that executes the content of the control data of the received control signal when the destination address in the control signal matches the self-address, and erases the self-address using a random number after the execution. Terminal device for multiplex transmission system.