JPS62125736A - Data transfer equipment - Google Patents

Abstract

PURPOSE:To attain the 1:n data call split service and to transfer a data to other terminal equipment while using a simple and inexpensive data terminal equipment by providing a means storing a communication data between data terminal equipments each having a data transfer equipment. CONSTITUTION:A data from a data terminal equipment, e.g., 20 is sent to a data terminal equipment 21 by a data transfer equipment (XFC)25 and also sent to the 3rd terminal equipment 30. Let data terminal equipments 20, 21 and 30 be A, B and C respectively, then interface circuits NWI1,... of the equipment XFC with a network NW are connected respectively to data transmission/ reception circuits UART1,.... A data from the equipment B stored in a data storage memory DS2 is transferred also to the 3rd terminal equipment C via the data transmission/reception circuit UART3 and the interface circuit NWI3 according to the request of the transfer service from a telephone set 22. Thus, the data from the terminal equipment B is transferred also to the 3rd data terminal equipment C on the way of communication between the data terminal equipments A and B.

Description

[Detailed Description of the Invention] [Summary] In an exchange system having a data exchange function, by providing means for accumulating communication data between data terminals,
A data transfer device that allows stored data to be transferred to a third party other than the above-mentioned data terminals, and that enables end-to-end communication with multiple terminals.

[Industrial application field]

The present invention relates to a data transfer device, and in particular, in an exchange system having a data exchange function, it is possible to transfer end-to-end communication data (inter-terminal communication data) to a third data terminal, or to transfer end-to-end communication data (inter-terminal communication data) to a third data terminal, The present invention relates to a data transfer device that enables end-to-end communication over multiple systems.

[Conventional technology]

Conventionally, end-to-end data communication has been based on a one-to-one connection between data terminals, and a one-to-n connection.
(n is an integer greater than or equal to 2) connections were impossible as long as the data terminal was a simple device having only data transmission/reception functions and display functions.

For example, when data obtained by accessing an external database (the other party's data terminal) is displayed on the CRT screen of a data terminal, the displayed data may be displayed while the data terminal is accessing the external database. could not be transferred to the CRT screen of the third data terminal.

Furthermore, one data terminal could not continuously switch and access two or more external databases.

FIG. 6 shows a conventional data communication system when a high-grade data terminal is used. In Figure 6,
When performing end-to-end data communication between the data terminals 61 and 62, the data from the data terminal 61 is
Digital telephone 63, digital trunk card (D
TC) 64, network (NW) 65, digital trunk card (DTC) 66, digital telephone 67,
and is sent to data terminal 62 via interface circuit 68.

In such a system, there is a case where it is desired to send data from the data terminal 61 to the data terminal 62 and also to a third data terminal 69 other than the data terminal 62. In this case, conventionally, data once received by the data terminal 62 is transferred to an interface circuit 70 different from the interface circuit 68, a digital telephone 71, and a digital trunk card (DTC).
64, network (NW) 65, digital trunk card (DTC) 72, network (NW) 65,
It was sent to a third data terminal 69 via a digital trunk card (DTC) 73 and a digital telephone 74.

In addition, in FIG. 6, 75 is the network (NW) 6
Control device (CC) for controlling the line connection in 5, 76
is the main memory (MM) used by the control device (CC) 75.

[Problem that the invention seeks to solve]

According to the above-mentioned conventional technology, the data terminal 62 not only has the function of simply receiving data and outputting the data for display, etc., but also has to retransmit the received data.

Therefore, it is impossible to send data to the third data terminal with a simple terminal device that only has an output function, and a high-grade terminal device such as a personal computer is required to receive and resend data at the data terminal 62. The scale of the software for controlling this is large, and two interface circuits 68 and 70 are required. Therefore, there is a problem that the price of the entire system is high.

Even when one data terminal is used to continuously switch and access two or more external databases, there is a problem in that the same expensive data terminal as described above is required.

[Means for solving problems]

FIG. 1 is a block diagram of the principle of the present invention. In the figure, a data transfer device XFC is connected to the network NW. The data transfer device XFC is connected to the first data terminal A.
a first data transmitting/receiving means UART1 that transmits and receives data between the first data transmitting and receiving means UART1; a first data storage means DS1 that stores data received by the first data transmitting and receiving means;
A second data transmitting/receiving means UAI? that transmits and receives data to and from data terminal B of ? T2, a second data storage means DS2 that stores data received in the second data transmission and reception means, and a third data transmission and reception means UART3 that transmits and receives data between the third data terminal C. and a control device CPU.

First data transmission/reception means [JAI? T I is for transmitting the data stored in the second data storage means DS2 to the first data terminal A under the control of the control device CPU.

The second data transmitting/receiving means [IART 2 is the control device C
The data stored in the first data storage means DSI is transmitted to the second data terminal B under the control of the PU.

The third data transmitting/receiving means [IART 3 is the control device C
a first or second data storage means DSI under the control of the PU;
Alternatively, the data stored in the DS2 is transmitted to the third data terminal C.

[For production]

The data transfer device according to the invention makes it possible to transfer communication data from either the first data terminal A or the second data terminal B to the third data terminal C.

〔Example〕

FIG. 2 is an overall configuration diagram of a system applied to an embodiment of the present invention. In the figure, when performing end-to-end data communication between data terminals 20 and 21, a digital telephone 22, a digital trunk card (DT
C) 23, network (NW) 24, data transfer device (XFC) 25, digital trunk card (DTC)
26 and a digital telephone 27. Data transfer bag provided by the present invention! (XFC) 25, data from the data terminal 20, for example, is sent to the data terminal 21 and also to the third data terminal 30. In the following description, data terminals 20, 21, and 3
Let 0 be A, B, and C, respectively.

FIG. 3 is a block diagram showing a data transfer device according to an embodiment of the present invention. In the same figure, data transfer device XF
C is the ink face circuit NWII with the network NW
, NWr2, and NWI3, and each of these interface circuits is a data transmitting/receiving circuit UART.
1 to UART 3. Data transmitting/receiving circuit tlART I~LIAI? T 3 <main memory ME
M.

The data storage memories DSL and DS2 are connected to the control device CPU.
It is connected to the.

FIG. 4 is a flowchart showing the flow of data transfer in the data transfer device (xFc) 25. In FIG. 4, data communication between data terminals A and B is as shown in (1),
Data transmission/reception circuit UART 1 and UAI? This is done via T2. During this end-to-end communication, for example, the digital telephone 2 to which the data terminal A is connected
When the data transfer service is activated from 2 and the telephone number of the data terminal C as the transfer destination is entered, the network (NW) 24 connects the data terminal C and the interface under the control of the control device (CC) 31. Forms a path with circuit NWI3. Next, as shown in FIG. 4 (2), the data from the data terminal A is transferred to the data storage memory means DSL via the interface circuit NWI I and the data transmitting/receiving circuit UART 1 under the control of the control device cPU.
This accumulated data is stored in the data transmitting/receiving circuit DAR.
T 2 is transmitted to data terminal B via interface circuit NWI 2. Also, data from data terminal B is transmitted to interface circuit NWI2 and data transmitting/receiving device UART2 under the control of control unit CPU 411.
This accumulated data is transmitted to the data terminal A via the data transmitting/receiving circuit DART1 and the interface circuit NWI1.

The data stored in the data storage memory DS2 from the data terminal B is transferred to the data transmission/reception circuit DART 3 in response to a transfer service request from the digital telephone 22.
and is also transferred to the third data terminal C via the interface circuit NWI 3.

Thus, during the end-to-end communication between data terminals A and B, data from data terminal B can also be transferred to a third data terminal C. In this case, the data terminal B may be a terminal with simple functions, does not require a sophisticated device such as a personal computer, and the scale of the software may be small. Furthermore, since the data terminal B must have only one input/output port, which is an interface with the digital telephone, only one interface circuit is required.

Using the data transfer device shown in FIG. 3, other services other than the above data transfer service can also be realized. Generally, there are cases where one data terminal wants to continuously access two or more external databases and display them on a CRT (so-called data call split service).

As the external database, for example, there are two data bases related to economic information and stock prices. Conventionally, when performing such a data call split service, a high-grade data terminal was required, the software required was enormous, and one data terminal was connected to multiple external databases. Therefore, there is a problem in that two or more interface circuits are required.

Data transfer device (XFC) 25 provided according to the present invention
By using , data terminals can be inexpensive even when performing data call split service.

FIG. 5 shows a data call according to a second embodiment of the present invention.
3 is a flowchart showing the flow of data transfer in split service. Here, a case is shown in which data terminal A is a first external database, data terminal C is a second external data database, and data terminal B continuously receives data from terminals A and C. That is, FIG. 5(1) shows the end-to-end communication between data terminals A and B, in which a data call split signal is sent from the digital telephone 27 (FIG. 2) connected to data terminal B.
When the service is started and the data terminal A is called, the network (NW) 24, under the control of the control device (CC) 31, connects the data terminal A and the interface circuit NWI.
1 and the data terminal B and the interface circuit N
Form a path with WI 2. Next, the data from the data terminal A is stored in the data storage memory DS1 via the data transmitting/receiving circuit UART 1, and the stored data is transmitted to the data terminal B via the data transmitting/receiving circuit UART 2. On the other hand, data from data terminal B is transmitted to data terminal A via data transmitting/receiving circuits UART 2 and IJART 1 without being stored in data storage memos IJDsI and DS2. End-to-end communication is thus established. The reason why the data from data terminal B is not stored in the data storage memories DSL and DS2 is because
This is because data terminal B is accessing data terminal A since this operation is performed under the control of data terminal B, and while data terminal B is performing end-to-end communication with data terminal C. This is because it is not known at what timing the data from the accessed data terminal A will be sent. For this reason, the transmission data from data terminal A is temporarily stored in the data storage memory DSI, and then sent to data terminal B at an appropriate timing under the control of the CPU.
will be sent to. In this way, data from data terminal A is displayed on data terminal B. In addition, if data terminal B receives data from data terminal A while communicating with data terminal C, data terminal A and XFC enter the communication state using an appropriate communication procedure under the control of the CPU, and the received data is stored as data. It is stored in the memory DSI.

Next, when the third data terminal C is called from the digital telephone 27 connected to the data terminal B, under the control of the control device CPU in the data transfer device (XFC) 25,
End-to-end data communication is performed between terminal B and terminal C. This situation is shown in FIG. 5 (2). Fifth
In figure (2), data from terminal C is sent to UART 3.
The stored data is stored in the DS2 via the CPU
The data is transmitted to data terminal B via UART 2 at appropriate timing under the control of data terminal B. On the other hand, data from data terminal B is not stored in O31, DS2 and is sent to UAR
T 2 , transmitted to data terminal C via UART 1. In this way, data from data terminal C is displayed on data terminal B instead of data from data terminal A.

In this state, when data terminal B makes a request to switch the data route to data terminal A from the digital telephone 27 connected to data terminal B, as shown in FIG. Switch to data terminal C and
) After the communication between data terminal A and XFC, the data from the data terminal stored in the data storage memory DSI is End-to-end communication between data terminals A and B similar to that described with reference to FIG. 5 (1) takes place.

Thereafter, when data terminal C is called again, end-to-end communication between data terminals B and C is performed after transmitting the data stored in data storage memory DS2 to data terminal B via IIART2.

In this way, data call splitting service can be easily implemented according to the second embodiment of the present invention.

Even in this case, the data terminal may be a simple terminal device that does not require advanced functions such as a computer. In addition, in the second embodiment, two terminals are connected to one data terminal B.
Although a data call split with two data terminals A and C has been described, it is clear that a data call split with three or more data terminals can be implemented in a similar manner.

(Effects of the Invention) As explained above, according to the present invention, data exchange tA
In a functional switching system, by providing a means for storing communication data between data terminals equipped with a data transfer device, data can be transferred to other data terminals using a simple and inexpensive data terminal device. It also becomes possible to perform 1:n data call splitting services.

[Brief explanation of drawings]

FIG. 1 is a block diagram of the principle of the present invention, FIG. 2 is an overall configuration diagram of a system applied to an embodiment of the present invention, and FIG. 3 is a block diagram showing a data transfer device according to an embodiment of the present invention. FIG. 4 is a flow chart showing the flow of data transfer according to one embodiment of the present invention, FIG. 5 is a flow chart showing the flow of data transfer according to another embodiment of the present invention, and FIG. 6 is a flowchart showing the flow of data transfer according to another embodiment of the present invention. FIG. 2 is a block diagram illustrating an example. A, B, C... Data terminal, UART
r - UART 3-Te9 Between sending and receiving n, CPU...
············Control device.

Claims (1)

[Claims] 1. A first data transmitting/receiving means (UART1), a second data transmitting/receiving means (UART2), a third data transmitting/receiving means (UART3), and a first data storage means (DS
1), a second data storage means (DS2), and a control device (
The first, second and third data transmitting/receiving means are connected to the first, second and third data terminals (A, B, C), respectively, and are equipped with an exchange having a data exchange function. In the system, the first data transmitting/receiving means (UART1) transmits data stored in the second data storage means (DS2) to the first data terminal (A) under the control of the control device. ), and the second data transmitting/receiving means (UART2) transmits the data stored in the first data storage means (DS1) under the control of the control device to the second data terminal (B ), and the third data transmitting/receiving means (UART3) transmits data to the first or second data storage means (DS) under the control of the control device.
1 or DS2) to the third data terminal (C), thereby transmitting data stored in either the first data terminal (A) or the second data terminal (B) to the third data terminal (C). A data transfer device that makes it possible to transfer communication data to the third data terminal (C). 2. The first data transmitting/receiving means (UART1), the second data transmitting/receiving means (UART2), the third data transmitting/receiving means (UART3), and the first data storage means (DS
1), a second data storage means (DS2), and a control device (
The first, second and third data transmitting/receiving means are connected to the first, second and third data terminals (A, B, C), respectively, and are equipped with an exchange having a data exchange function. In the system, if the instruction from the second data terminal (B) is a connection path setting request between the first data terminal (A) and the second data terminal (B), the control device After transmitting the data stored in the first data storage means (DS1) to the second data terminal (B) under control, the second data terminal (B) and the first A connection path with the data terminal (A) is set, and instructions from the second data terminal (B) are transmitted to the third data terminal (A).
In the case of a connection path setting request between the data terminal (C) and the second data terminal (B), the data stored in the second data storage means (DS2) is sent under the control of the control device. A data transfer device characterized in that, after transmitting the data to the second data terminal (B), a connection path between the second data terminal and the third data terminal is set.