JP2002312084A - Port control method and device attached to microcomputer control equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a port control method and device attached to microcomputer control equipment capable of switching a communication line connected to a microcomputer in series or in parallel by using a small number of connection lines (a small number of ports), and being used for communication and another purpose, and to correspond to increase in the number of control voices. SOLUTION: The following means are adopted to a control method an a control device for a communication port attached to microcomputer control equipment. First, a communication port switching device is connected to a connection line with a display device of a microcomputer connected with a display device and a communicating device. Next, by using the connection line from the microcomputer to the display device, the communication line connected to the microcomputer is series or in parallel is switched to be used for communication and another purpose.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device of a microcomputer, a terminal display device such as a mobile phone, a PHS, a mobile PC, a machine tool, a semiconductor manufacturing device, and other display devices connected to the microcomputer. The present invention relates to a method for controlling a communication port using a connection line of a display device, and a control device therefor.

[0002]

2. Description of the Related Art Display devices, communication devices, and other functional devices are connected to a system including a microcomputer, and in order to control them, the number of devices to be connected, the devices to be controlled, and the functions to be controlled are connected in principle. Lines are required.

Accordingly, as the number of functions to be controlled and the number of devices to be controlled increase, the required number of connection lines from microcomputers increases. This complicates the whole device, and if it exceeds the capacity of the microcomputer, the configuration becomes impossible.

FIG. 1 shows one display device 2 for a microcomputer-controlled card reader / writer 1 according to a conventional method.
FIG. 2 is an explanatory diagram of a system in which one communication line 4 is secured. The communication device connected to the communication line 4 is omitted in the drawing. In this case, connection lines (also called control lines) from the microcomputer-controlled card reader / writer 1 are two sets of a connection line 3 to the display device 2 and a communication line 4 to the communication device. (Since the connection line 3 and the communication line 4 and the like are often constituted by a plurality of lines, they are expressed as two sets.)

FIG. 2 also shows a conventional method, in which a card reader / writer 1 controlled by a microcomputer is provided with one display device 2, two communication lines 5, 6 and one voice uttering device 8. is there. The voice utterance device 8 is indicated as a voice loudspeaker in the figure. In this case, the connection line from the microcomputer-controlled card reader / writer 1 is connected to the display device 2 as the number of connected devices and functions increases.
, The communication lines 5 and 6, and the connection line 7 to the voice utterance device 8 are required.

As a means for preventing the number of connection lines from increasing as described above, the invention shown in FIG. 3 has been proposed. That is, a method of securing one display device 2, one communication line, and one voice uttering device 8 in the card reader / writer 1 controlled by the macro computer, but using the connection line 3 to the display device 2. It is intended to control the voice utterance device 8 via the signal decoding device 10. This can be said to be an invention in which voice utterance is controlled by a display I / O port signal. In this case, two sets of connection lines from the microcomputer-controlled card reader / writer 1 can be provided.

This method is: Connection line 3 from microcomputer-controlled card reader / writer 1 to display device 2
The control of the voice utterance device 8 is performed by using a signal of the same format as that of the display control signal that is not used for display control. However, there is a limit to the number of signals normally used for character display. For this reason, it can be used only when adding an utterance system requiring a small number of utterance types, but this is a limitation.

[0008]

SUMMARY OF THE INVENTION The present invention is to solve the above-mentioned problem, and uses a small number of connection lines (fewer ports) to switch a communication line connected in series or parallel to a microcomputer. In addition, the present invention provides a control method and a control device of a communication port attached to a microcomputer control device that can be used for communication and other uses, and can cope with an increase in the number of control voices.

[0009]

According to the present invention, a communication port switching device is connected to a connection line between a display device and a microcomputer to which a communication device is connected. A method for controlling a communication port attached to a microcomputer control device, wherein a communication line connected in series or parallel to a microcomputer is switched using a connection line from a computer to a display device and used for communication and other purposes And a control device.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 4 shows a first embodiment according to the present invention, which is a card reader / writer in which switching of a voice utterance device and a communication port is controlled by a display I / O port signal, and which is controlled by a microcomputer-controlled card reader / writer 1. The present invention relates to a system for controlling one display device 2, two communication lines 5 ′, 6 ′, and one voice uttering device 8.

A microcomputer-controlled card reader / writer 1 is connected to a display device 2, a port switching electronic switch 11, and a connection line 3 and a communication line 4.
The display device 2 has a liquid crystal display unit with a built-in display control function.

A connection line 3 from the microcomputer-controlled card reader / writer 1 to the display device 2 branches, one of which is connected to the display device 2 and the other to the voice control and port switching signal decoder 12.

Voice control and port switching signal decoder 1
2 is a voice loudspeaker 8 and a port switching electronic switch 1
1 is connected. In the figure, reference numeral 13 denotes a connection line for sending a port switching signal to the port switching electronic switch 11.

Voice control and port switching signal decoder 1
2, a voice utterance device 8 is provided by the transmitted voice control signal.
And a necessary voice from a voice utterance device including the speaker 9. On the other hand, the port switching electronic switch 11 is operated by the communication port switching signal sent from the voice control and port switching signal decoder 12, and switches the communication lines 5 'and 6', more specifically, the communication ports.

By this means, the necessary connection lines from the microcomputer-controlled card reader / writer 1
Two sets of a connection line 3 and a communication line 4 are provided. This system enables switching of communication ports along with voice control.The communication port switching signal has the same format as display and voice control, and signals not used for display and voice control are used for communication port switching. Use for switching. The voice signal and the communication control are performed by a single device called a voice control and port switching signal decoder 12.

FIG. 5 shows a system according to a second embodiment of the present invention, which performs the same number of controls as the first embodiment, but is a system capable of increasing the number of control sounds. As in the first embodiment, a card reader / writer 1 controlled by a microcomputer comprises a display device 2 and an electronic switch 1 for switching ports.
1 is connected to connection line 3 and communication line 4.

Here, the connection line 3 branched from the connection line 3 with the display device 2 is connected to the port switching signal decoding unit 14. On the other hand, the port switching electronic switch 11
Is connected to communication devices via communication lines 16 and 17,
The port switching signal decoding unit 14 and the voice control signal decoding unit 18 are connected via connection lines 13 and 15.

The communication port switching signal transmitted via the connection line 3 is decoded by the port switching signal decoding unit 14, and the port switching signal is transmitted to the port switching switch 11 via the connection line 13 so that the port switching switch 11 By driving, the paths of the communication lines 16 and 17 of the communication port are switched.

On the other hand, the control of the voice utterance device 8 is performed through a connection line 15 connected to the port changeover electronic switch 11, and a system for transmitting a voice control signal to the voice signal decoding unit 18 via the connection line 15. is there. In principle, the number of controls performed via the connection lines is not limited, and thus the number of control sounds can be increased.

[0020]

According to the first and second aspects of the present invention, the communication port switching device is connected to the connection line between the display device and the microcomputer connected to the communication device, and
By using the connection line from the microcomputer to the display device, the communication line connected in series or parallel to the microcomputer is switched and used for communication and other purposes. Can be controlled with a small number of connection lines, so that the device can be simplified and lightened, and the cost can be reduced.

According to the third and fourth aspects of the present invention,
If voice utterance is selected as another application, and voice control is performed via a connection line as in the embodiment, it is possible to cope with an increase in the number of control sounds.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of a conventional general card reader / writer.

FIG. 2 is an explanatory diagram of a conventional card reader / writer having a voice loudspeaker and a communication port.

FIG. 3 is an explanatory diagram of a known improved card reader / writer.

FIG. 4 is an explanatory diagram of a card reader / writer showing a first embodiment according to the present invention.

FIG. 5 is an explanatory diagram of a card reader / writer showing a second embodiment.

[Explanation of symbols]

1. . . 1. Card reader / writer controlled by microcomputer . . . . . . . . . . . Display device 3, 7, 13, 15. . . . . . Connection lines 4, 5, 5 ', 6, 6', 16, 17. . . . . . Communication line 8. . . . . . . . . . . . Voice loudspeaker 9. . . . . . . . . . . . Speaker 10,18. . . . . . Voice control signal decoding unit 11. . . . . . . . . . . . Electronic switch for switching ports 12. . . . . . . . . . . . 13. Voice control and port switching signal decoding unit . . . . . . . . . . . Port switching signal decoding unit

Claims (4)

[Claims] A communication port switching device is connected to a connection line between a display device and a microcomputer connected to a communication device, and the microcomputer is connected in series to the microcomputer using a connection line from the microcomputer to the display device. Alternatively, a method of controlling a communication port attached to a microcomputer control device, characterized by switching communication lines connected in parallel and using the communication lines for communication and other purposes. 2. A communication port switching device is connected to a connection line of a microcomputer connected to a display device and a communication device to a display device, and is serially connected to the microcomputer using a connection line from the microcomputer to the display device. Alternatively, a communication port control device attached to a microcomputer control device, characterized in that the communication lines connected in parallel are switched to be used for communication and other purposes. 3. The method for controlling a communication port attached to a microcomputer control device according to claim 1, wherein another application is voice utterance. 4. The control device for a communication port attached to a microcomputer control device according to claim 2, wherein another application is voice utterance.