JP3100152B2 - Computer connection device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inter-computer connection device for directly connecting two computers capable of exchanging data using an IC card as a medium.

2. Description of the Related Art Conventionally, a connection between two computers capable of exchanging data using an IC card as a medium has been made by a configuration as shown in FIG. This is an example of exchanging data between the host computer 32 and a slave computer 33 having an IC card interface 34.
The IC card interface 35 is attached, and data exchange is performed using the IC card 31 as a medium.

In such a system configuration, when data is transmitted from the host computer 32 to the slave computer 33,
The host computer 32 writes data to the IC card 31 via the IC card interface 35, and the slave computer 33 reads data on the IC card 31 via the IC card interface 34, as indicated by the broken arrow 36.

On the other hand, when data is sent from the slave computer 33 to the host computer 32, the slave computer 33 writes data to the IC card 31 via the IC card interface 34 as shown by a solid arrow 37, and the host computer 32 , The data on the IC card 31 is read.

As described above, data exchange between the host computer 32 and the slave computer 33 is performed offline using the IC card 31 as a medium, that is, in a state where the two computers 32 and 33 are not directly connected. Therefore, when exchanging data, IC
It is necessary to attach and detach the card 31 to and from the IC card interfaces 34 and 35 many times.

[Problems to be Solved by the Invention] As described above, in the related art, for example, when data is exchanged between a host computer and a slave computer, data is exchanged offline using an IC card as a medium, so that data is exchanged in real time. Data exchange cannot be performed, and high-speed data exchange is also difficult. Further, there is a problem that the IC card must be repeatedly attached and detached during data exchange.

The present invention seeks to solve these problems,
Provide a computer-to-computer connection device that allows direct connection between two computers without using an IC card in order to perform real-time, high-speed data exchange between two computers that can exchange data using an IC card as a medium The purpose is to do.

[Means for Solving the Problems] In order to solve the above problems, the present invention connects a first computer and a second computer having an IC card interface via an IC card interface and without an IC card. Between a computer and a dual-port RAM, a first interface circuit for connecting one port of the dual-port RAM to a first computer, a second port of the dual-port RAM, and an IC card A second interface circuit for connecting to the interface, and connection means for connecting between the first interface circuit and the first computer and between the second interface circuit and the IC card interface, respectively; Is done.

When transmitting data from the first computer to the second computer, the first computer writes the data in a predetermined area of the dual port RAM,
The second computer reads the data in the area of the dual port RAM via the IC card interface, and
When transmitting data from the computer to the first computer, the second computer writes the data to a predetermined area of the dual port RAM via the IC card interface, and the second computer transmits the data to the dual port RAM.
Of the area is read.

More specifically, the connection means is, for example, a first connector for connecting between the first interface circuit and the first computer, and an IC card for connecting between the second interface circuit and the IC card interface. It comprises a second connector inserted into the interface and a cable connecting the second connector and the second interface circuit.

[Operation] The second computer communicates with the first computer.
It has an IC card interface so that data can be exchanged using an IC card as a medium. The data transmission from the first computer to the second computer is performed when the first computer writes data to an area of the dual port RAM, and the second computer transmits the data in the area of the dual port RAM via the IC card interface. This is done by reading Conversely, the second computer is
Data transmission to a second computer is via a dual-port RAM via an IC card interface.
This is performed by writing data to a certain area and reading it by the first computer.

In this way, data is exchanged online between the first and second computers via the dual port RAM. This not only enables high-speed data exchange in real time, but also eliminates the need for complicated attachment and detachment when using an IC card.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

FIG. 2 is a block diagram showing a schematic configuration of a system using a computer connection device according to one embodiment of the present invention. As shown in the figure, a connection device (inter-computer connection device) for connecting a host computer (first computer) 2 and an IC card interface 4 provided in a slave computer (second computer) 3 online 1) is provided. The connection device 1 is connected to the host computer 2 via a connector 8 and to the IC card interface 4 via a cable 9 and a connector 10.

FIG. 1 is a block diagram showing the internal configuration of the connection device 1 in detail, which comprises a dual-port RAM 5, first and second interface circuits 6, 7 and the above-described connectors 8, 10, and cables 9 as connection means. Have been. Address buses 11a, 11b, data buses 12a, 12b, and a control bus are provided between the dual port RAM 5 and the interface circuits 6, 7.
13a, 13b, the connector 8 and the host computer 2 are also connected by an address bus 11c, a data bus 12c, and a control bus 13c, and the cable 9 is also composed of an address bus 11d, a data bus 12d, and a control bus 13d. I have.

Here, when sending data from the host computer 2 to the slave computer 3, the host computer 2 sends an address signal of a certain area of the dual port RAM 5 to the address bus 11c, a data signal to be written to that area on the data bus 12c, and a control bus 13c. Control signals such as a towing signal. These address signals, data signals and control signals are converted into address records and the like by the interface circuit 6 of the host computer 2 and then transferred to the dual port RAM via the address bus 11b, the data bus 12b and the control bus 13b.
The data reaches one of the ports 5 and data is written to the specified area.

Thereafter, the slave computer 3 places the dual port R on the address bus 11d via the IC card interface 4.
The address signal of the area where the data in AM5 is written is output, and the control signal is output to the control bus 13d. At this time, the slave computer 3 performs exactly the same operation as reading data from an IC card inserted into the IC card interface 4. What differs from the conventional technology is that the IC that is actually read is written by the host computer
It is a dual port RAM 5 in the connection device 1 which is connected to the host computer 2 instead of the card and in which data is written by the host computer 2.

The address signal and the control signal output from the slave computer 3 to the address bus 11d and the control bus 13d via the IC card interface 4 as described above are decoded by the interface circuit 7 on the slave computer 3 side in the connection device 1. After receiving such a conversion, it reaches the other port of the dual port RAM 5 via the address bus 11a and the control bus 13a. As a result, the data at the specified address is read from the dual port RAM 5 and the data bus 12 is read.
A data signal is output to a. This data signal reaches the slave computer 3 via the interface circuit 7, the data bus 12d and the IC card interface 4, and the data is read by the slave computer 3.

On the other hand, when data is sent from the slave computer 3 to the host computer 2, the data flow is reversed, but the slave computer 3 writes the data to a certain area of the dual-port RAM 5 by the same mechanism as described above.
The data is sent when the host computer 2 reads the data in the area.

In this manner, data exchange is performed between the host computer 2 and the slave computer 3 having the IC card interface 4 online, that is, while the two computers 2 and 3 are connected via the connection device 1 via the dual port RAM 5. Will be Therefore, real-time, high-speed data exchange, which was impossible in the past, can be realized.

Note that the present invention can be applied to a case where data exchange is performed between a computer having a disk interface, a bubble memory interface, and a magnetic tape interface instead of the IC card interface and another computer.

[Effects of the Invention] As described above, according to the present invention, high-speed data exchange can be performed between two computers in real time, so that the processing speed of both computers is improved.

In addition, since data can be exchanged online, there is no need to repeatedly insert and remove the IC card as in the related art, and there is an advantage that the labor is reduced.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an internal configuration of an inter-computer connection device according to an embodiment of the present invention, FIG. 2 is a block diagram showing a schematic configuration of a system using the inter-computer connection device according to the embodiment, FIG. 3 is a block diagram showing a connection state between a host computer and a slave computer according to the prior art. DESCRIPTION OF SYMBOLS 1 ... Computer connection apparatus 2 ... Host computer (1st computer) 3 ... Slave computer (2nd computer) 4 ... IC card interface 5 ... Dual port RAM 6 ... 1st interface 7 ... … Second interface 8,10… Connector 9… Cable.

──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-64-8492 (JP, A) JP-A-62-248054 (JP, A) JP-A-63-255760 (JP, A) JP-A 64-64 78360 (JP, A) JP-A-2-89142 (JP, A) JP-A-3-53776 (JP, U) JP-A-2-141877 (JP, U) (58) Fields investigated (Int. ⁷ , DB name) G06F 3 / 00,3 / 08 G06F 12/00-12/06 G06F 13 / 00,13 / 38 G06K 17/00 H01R 31/06

Claims (1)

(57) [Claims] 1. An inter-computer connection device for connecting a first computer and a second computer having an IC card interface via an IC card interface and without an IC card, comprising: a dual port RAM; A first interface circuit for connecting one port of a dual port RAM to the first computer, and a second interface circuit for connecting the other port of the dual port RAM to the IC card interface Means for connecting between the first interface circuit and the first computer and between the second interface circuit and the IC card interface, respectively, wherein the first interface circuit and the first computer are connected to each other. A first connector for connecting computers; A second connector inserted into the IC card interface for connecting the interface circuit and the IC card interface, and a connection means having a cable connecting the second connector and the second interface circuit; When transmitting data from the first computer to the second computer, the first computer writes data in a predetermined area of the dual port RAM, and the second computer transmits the IC card. The data in the area of the dual port RAM is read through an interface, and when the data is transmitted from the second computer to the first computer, the second computer transmits the data through the IC card interface. Dual port
An inter-computer connection device, wherein data is written to a predetermined area of a RAM, and the first computer reads data of the area of the dual-port RAM.