JPH04279952A - Online terminal equipment - Google Patents

Abstract

PURPOSE:To transmit and receive data to and from plural host systems which have the same communication procedures and are different in data stream for control of device control parts. CONSTITUTION:Device control parts 131 and 133 are provided which control a display device 14 and a printer 15 based on plural kinds of data stream different from each other, and one of device control parts 131 and 132 is selected by a device control selecting part 12 based on discrimination information of the data stream inputted from plural host systems 301 and 302 through a communication control part 11.

Description

[Detailed description of the invention]

0001

FIELD OF INDUSTRIAL APPLICATION The present invention is applied to a device control selection device for an online terminal device. In particular, the present invention relates to a device control selection device that selects a plurality of device control units of an online terminal device connected to a public line and a packet-switched network.

0002

[Background Art] Conventionally, online terminal devices are connected to a network constructed using a public line or a packet-switched network, and are connected by returning an incoming call signal in response to a calling signal from a host system. Before returning the incoming call signal, the device control unit is operated in advance to control the display device or printer device based on the data stream sent from the host system.

0003

[Problem to be Solved by the Invention] However, in such conventional online terminal devices, when there is an incoming call signal from a host system that uses the same communication procedure but a different data stream to control the device control unit, line connection cannot be established. However, there was a drawback that it was not possible to actually send and receive data.

SUMMARY OF THE INVENTION The present invention solves the above-mentioned drawbacks, and aims to provide an online terminal device that can send and receive data to and from a plurality of host systems that use the same communication procedure but different data streams for controlling device control units. shall be.

[0005]

[Means for Solving the Problems] The present invention provides a communication control unit that controls communication with a plurality of host systems via a line network, and a data stream input from the plurality of host systems through the communication control unit. In the online terminal device, the device control means includes a plurality of device control units each controlling the device based on different types of data streams, and the device control means controls the device based on the data streams of the plurality of host systems. The present invention is characterized by comprising a device control selection section that selects a corresponding one of the plurality of device control sections based on identification information of the data stream inputted via the communication control section.

Further, in the present invention, the line network may be a public line or a packet switching network.

Further, in the present invention, the device may be a display device or a printer device.

[0008]

[Operation] The device control means includes a plurality of device control sections that perform control based on mutually different types of data streams, and the device control selection section receives identification information of data streams input from a plurality of host systems via the communication control section. A corresponding one of the plurality of device control units is selected based on the information.

[0009] As described above, data can be sent and received with a plurality of host systems that use the same communication procedure but different data streams for controlling device control units.

0010

Embodiments Examples of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram of an online terminal device according to an embodiment of the present invention.

In FIG. 1, an online terminal device 10 includes a communication control unit 11 that controls communication with a plurality of host systems 301 and 302 via a public line 20 as a line network, and a communication control unit that controls communication from the host systems 301 and 302. and a device control means for controlling the device based on a data stream inputted via 11.

The feature of the present invention is that the device control means includes a plurality of device control units 1 each performing control based on mutually different types of data streams.
31 and 132, and a device control selection unit 12 that selects a corresponding one of the plurality of device control units 13 based on identification information of a data stream input from the host system 30 via the communication control unit 11. It is in.

[0013] Furthermore, the above device is a display device 1.
4 and a printer device 15.

[0014] The operation of the online terminal device having such a configuration will be explained. FIG. 2 is a sequence diagram of each signal when the online terminal device of the present invention is connected to a host system.

In FIGS. 1 and 2, the identification information of the host system 301 is "1" and the corresponding device control section is 131, and the identification information of the host system 302 is "2" and the corresponding device control section is 132. Suppose there is.

[0016] When the communication control unit 11 completes connection of the call signal from the host system 301 to the receiving line, the host system 301 transmits identification information "1". When the communication control unit 11 receives the identification information “1”, it notifies the device control selection unit 12 of the identification information “1”.

The device control selection unit 12 has the identification information “
1'', the device control section 131 is operated and an affirmative response to the identification information is returned to the host system 301 via the communication control section 11. The host system 301 receives the acknowledgment, causing the host system 301 to
Data can be transmitted and received between the device controller 131 and the device controller 131 .

After data transmission/reception with the host system 301 is completed and the line is disconnected, the host system 30
When the line is connected by a calling signal from 2, host system 302 transmits identification information ``2''. The device control selection unit 12 receives the identification information “2” from the communication control unit 11.
'', the device controller 132 is operated and data is transmitted and received between the host system 302 and the device controller 132.

[0019]

As described above, the present invention has an excellent effect of being able to perform data communication with a plurality of host systems that use the same communication procedure but different data streams for controlling device control units.

[Brief explanation of the drawing]

FIG. 1 is a block configuration diagram of an online terminal device according to an embodiment of the present invention.

FIG. 2 is a sequence diagram of each signal when the online terminal device of the present invention is connected to a host system.

[Explanation of symbols]

10 Online terminal device 11 Communication control section 12 Device control selection section 131 , 132 Device control section 14 Display device 15 Printer device 20 Public line (packet switching network)

Claims (3)

[Claims] Claim 1: A communication control unit that controls communication with a plurality of host systems via a line network, and a device control unit that controls devices based on data streams input from the plurality of host systems via the communication control unit. In the online terminal device, the device control means includes a plurality of device control units each performing control based on mutually different types of data streams, and receives input from the plurality of host systems via the communication control unit. An online terminal device comprising: a device control selection unit that selects a corresponding one of the plurality of device control units based on identification information of the data stream. 2. The online terminal device according to claim 1, wherein said line network is a public line or a packet switched network. 3. The online terminal device according to claim 1, wherein the device is a display device or a printer device.