JP2792860B2 - Data communication device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data communication device, and more particularly to a data communication device having a telephone circuit operated by a power supplied from a line.

(Prior Art) Conventionally, many data communication apparatuses, for example, facsimile apparatuses, share one line with a telephone. This is not only due to the high cost of drawing a line dedicated to the facsimile apparatus, but also due to the use of the facsimile apparatus to make a dial call, ring a bell, and make a voice call.

Therefore, in a conventional facsimile apparatus equipped with a telephone, for example, as shown in FIG.
And the handset 2 is connected to a line L via a switch 6 and a connector 7. The handset 2 includes a dial signal transmitting unit 8, a numeric keypad 9, a telephone circuit 10, a microphone 11 and a speaker 12, and a voice signal transmitted from the line L is detected and amplified by the telephone circuit 10 and converted into voice by the speaker 12. The audio signal output and input from the microphone 11 is transmitted to the line L via the telephone circuit 10. The telephone number of the other party is input from the numeric keypad 9, and the dial signal transmitting unit 8 converts the telephone number input by the numeric keypad 9 into a corresponding dial signal and transmits the dial signal to the line L.

On the other hand, the facsimile machine 1 has a CPU (Central Processin).
g Unit) 13, I / O port 14, modem 15, operation unit 16, facsimile unit unit 17, line protector 18, dial signal transmission unit 19, ringing detection unit 20, and connector 4, switch 6, connector 7, etc. The CPU 13 is provided with a switch 6
Of the facsimile machine 1 and controls the respective parts of the facsimile machine 1 to execute the sequence as the facsimile machine 1. The CPU 13 stores the destination telephone number corresponding to the speed dial and the touch dial in the internal memory, reads out the telephone number corresponding to the speed dial and the one-touch dial entered from the ten keys of the operation unit 16 from the memory, and reads the telephone number. Dial signal sending unit 19 via / O port 14
Output to The dial signal sending unit 19 sends out a dial signal of the telephone number sent from the CPU 13 to the line L.

The switch 6 normally connects the line L to the handset 2, and a ringing detection unit 20 detects a call signal from the line L. The CPU 13 sends an I / O port 14 when sending a fax by automatic facsimile transmission or input from the numeric keypad of the operation unit 16.
A switching signal is output to the switching unit 6 via the switch, and the line L is connected to the dial signal transmitting unit 19 side. Further, the CPU 13 switches the switch 6 to connect the line L to the modem 15 at the time of facsimile communication.

Therefore, when the power of the facsimile machine 1 is not turned on, the switch 6 changes the line to L and the handset 2
To the dial signal transmitting unit 8 and the telephone circuit 10 by the power supplied through the line L even in the event of a power failure or the like.
Is activated and the handset 2 can be used.

(Problems to be Solved by the Invention) However, in such a conventional data communication apparatus such as a facsimile apparatus, it is possible to use the telephone even when the power to the data communication apparatus is not turned on, such as during a power failure. In order to be able to do so, the dial signal sending unit and the numeric keypad were provided on both the telephone and the data communication device, so these parts were duplicated and the cost increased,
There is a problem that the data communication device becomes large.

(Objects of the Invention) Therefore, the present invention provides a dial signal transmitting unit and a numeric keypad only in a data communication device, and selectively switches the numeric keypad to a dial signal transmitting unit and control means of the data communication device by dial switching means. By connecting and sending a dial signal to the sending unit via the telephone number output isolation element from the control means, it is possible to prevent the characteristics of the line from adversely affecting the control means of the data communication device and to perform data communication. The purpose is to make it possible to use the telephone even when the power of the device is not turned on, and to reduce the price and size of the data communication device by omitting the dial signal transmission unit and numeric keypad of the telephone. I have.

(Constitution of the Invention) In order to achieve the above object, the present invention relates to a data communication device having a telephone line operated by a power supply supplied from a line, and an operation means for inputting a telephone number and dial information such as abbreviated dial. Dial signal transmitting means for transmitting a dial signal corresponding to input dial information to a line, switching means for switching and connecting a line to the telephone circuit and the dial signal transmitting means and to the data communication device, and a device. A control unit for controlling the respective units to execute processing as a data communication device, reading a corresponding telephone number by input of a speed dial from the operation unit, and outputting the same as dial information, and output from the control unit. Dial transmission means for outputting dial information to the dial signal transmission means; and An input switching means for selectively switching and connecting the signal transmitting means and the control means; and when the switching means does not receive power supply from the data communication device, a line is connected to the telephone circuit and the telephone circuit. The connection is maintained on the dial signal transmitting means side, and the dial transmitting means is constituted by an isolation element, and outputs the dial information to the dial signal transmitting means in a state of being electrically separated from the control means. Is what you do.

 Hereinafter, a specific description will be given based on examples of the present invention.

 1 to 5 are views showing one embodiment of the present invention.

In FIG. 1, a facsimile apparatus 21 includes a handset (telephone) 22, and the handset 22 is provided with only a speaker 23 and a microphone 24.

The facsimile apparatus 21 includes a connector 25, a switch (switching means) 26, a telephone circuit 27, a dial signal transmitting section (dial signal transmitting section) 28, a dial transmitting section (dial transmitting section) 29, an operation section 30, a ringing detecting section 31, I / O port 3
2, a line protector 33, a modem 34, a control unit (control means) 35, a facsimile unit 36, etc., and a telephone line L is connected to the connector 25.

The switch 26 is activated by a switching signal ES input from the control unit 35 via the I / O port 32, and switches the telephone line L to the telephone line.
27 and the dial signal transmitting unit 28 and the line protector 33 and the modem 34 (the facsimile function side). The switch 26 connects the telephone line L to the telephone circuit 27 and the dial signal transmitting unit 28 except when the facsimile signal is transmitted / received, and transmits the dial signal to the telephone line L even when the power of the facsimile device 21 is not turned on. Connect to the sending unit 28 side.

A signal (dial information) indicating a telephone number is input to the dial signal transmitting unit 28 directly from the numeric keypad of the operation unit 30 or from the control unit 35 via the dial transmitting unit 29, and the dial signal transmitting unit 28 is input and the dial information is input. Is converted into a dial signal and transmitted to the telephone line L.

The dial transmission unit 29 is composed of, for example, an isolation element such as a photocoupler, and is connected to the control unit 3 via an I / O port 32.
The signal (dial information) indicating the telephone number input from 5 is transmitted to the dial signal transmitting unit 28 while the control unit 35 and the dial signal transmitting unit 28 (telephone line L) are electrically separated. I do.

The operation unit 30 includes a numeric keypad 30a and a TEL as shown in FIG.
It includes a button 30b, a start button 30c, a redial button 30d, a shortening button 30e, a confidential button 30f, and a display unit 30g, and a dial input switching unit (dial input switching unit) 30h shown in FIG.

The numeric keypad 30a is used to input a telephone number, abbreviated dialing, and the like, and the TEL button 30b is turned on when dialing the handset 22 without off-hook. The start button 30c is turned on when instructing the start of facsimile transmission or reception, and the re-transmission button 30d, the shortening button 30e, and the confidential button 30f are turned on when switching between modes. The display unit 30g displays information transmitted from the facsimile machine 1 to the operator.

The dial input switching unit 30h selectively connects the numeric keypad 30a to the dial signal transmission unit 28 and the control unit 35, and normally connects the numeric keypad 30a to the dial signal transmission unit 28. When the TEL button 30b is turned on, the dial input switching unit 30h switches the numeric keypad 30a from the dial signal transmission unit 28 to the control unit 35 and connects.

The ringing detector 31 detects ringing from the telephone line L and outputs the detected ringing to the controller 35 via the I / O port 32. The line protector 33 protects the facsimile side (modem 34 side) from the characteristic fluctuation of the telephone line L, and the modem 34 modulates and demodulates the facsimile signal.

The facsimile unit 36 has a digital data compression and
Other units necessary for the facsimile machine 21 such as a reproducing unit, a plotter unit, and a scanner unit are collectively referred to.

The control unit 35 controls each unit of the facsimile machine 21 to execute the sequence as the facsimile machine 21, and stores the destination telephone number corresponding to the abbreviated dial etc. in its internal memory and shortens it from the operation unit 30. The corresponding telephone number is read by dial input and output as dial information. Further, the control unit 35 determines a key operation of the numeric keypad 30a and outputs a signal (dial information) for displaying a telephone number to the I / O.
Output to port 32.

 Next, the operation will be described.

In the initial state, the switch 26 connects the telephone line L to the telephone line 27 and the dial signal transmitting unit 28, and the dial input switching unit 30h connects the ten key 30a to the dial signal transmitting unit 28.
Connected to

When the operator in this state is to facsimile transmission by manual operation, first, as shown the flow chart in FIG. 4, and off-hook the handset 22 (step P _1), enter the other party's telephone number ten keys 30a and key operation (step P _2). By this key operation,
Dial information is transmitted from the numeric keypad 30a to the dial signal transmitting unit 28.
The dial signal sending unit 28 sends the dial signal to the telephone line L.

When the other party answers (step P ₃ ), the start button
30c and introducing (step P _4). When the start button 30c is turned on, the control unit 35 outputs the switching signal E via the I / O port 32.
S is output to the switch 26, and the telephone line L is connected to the line protector 33 and the modem 34 (facsimile function). (Step
P _5). Then performs normal facsimile procedure (step P _6).

Destination in step P ₃ is completed by hook the handset 22 when not in response (step P _7).

When the power of the facsimile machine 21 is not turned on due to a power failure or the like, the switch 26 and the dial input switching unit 30h are kept in the initial state, and the dial signal transmission unit 28 and the telephone circuit 27 are operated by the power from the telephone line L. . Therefore, even during a power failure, the operator can
A telephone call can be made by off-hook 22 and key-operating the numeric keypad 30a of the operation unit 30.

On the other hand, when transmitting the automatic transmission or speed-dial or the like, the operator, as shown the flow chart in FIG. 5, turning on the TEL button 30b or abbreviation key 30e or the like (step S _1). When the operator put the TEL button 30b or abbreviation key 30e, etc., the dial input switching unit 30h is connected by switching to the control unit 35 of the ten-key 30a from the dial signal transmission unit 28 (Step S _2), then, a predetermined numeric keys 30a perform a key operation (step S _3). The control unit 35 reads out the telephone number corresponding to the dial entered by the ten-key 30a from its memory or the like, and outputs it to the dial transmission unit 29 via the I / O port 32 as dial information. Dial transmission unit 29 is transmitted to the dial signal transmission unit 28 with galvanic insulation of the dial information (step S _5), the dial signal transmission unit 28 sends the dial signal to the telephone line L (step S ₆₎ . When the transmission of the dial signal is completed (step S ₇ ), the switching signal ES is transmitted to the switching unit 2 via the I / O port 32.
Output to 6, switch the telephone line L line protector 33, the modem 34 side (step S _8). Then performs normal facsimile procedure (step S _9).

As described above, the dial signal transmitting unit 28 and the numeric keypad 30a are provided only in the facsimile device 21, the dial signal transmitting unit and the numeric keypad can be omitted from the handset 22, and the size of the facsimile device 21 can be reduced as a whole. Can be priced. Further, the ten key 30a of the operation unit 30 is switched to and connected to the dial signal transmission unit 28 and the control unit 35, so that the telephone function can be used even when the facsimile machine 21 is not turned on due to a power failure or the like. Further, since the dial information from the control unit 235 is transmitted to the dial signal transmission unit 28 via the dial transmission unit 29, the modem 34, the control unit 35, the facsimile unit
The facsimile function unit such as 36 can be electrically insulated from the telephone line L, and the characteristics of the telephone line L can be prevented from being adversely affected such as the control unit 35 being damaged.

(Effects) According to the present invention, the operation of the telephone circuit can be performed by using the operation unit of the communication device. Therefore, the dial signal transmission unit and the numeric keypad of the telephone can be omitted, and the communication device can be reduced. Price and size can be reduced. Further, even when the power is not turned on due to a power failure or the like, the switching means automatically keeps the line connected to the telephone circuit and the dial signal transmitting means when the power is turned off, so that a circuit such as an off-hook detection is unnecessary. , The device can be simply configured. Furthermore, the dial transmission means between the control means and the line is constituted by an isolation element, and dial information is output to the line side while the control means and the line are electrically separated, and the input switching means controls the dial information. Since the operating means is connected to the dial signal transmitting means by switching the means and connection, the dial information is transmitted to the dial signal transmitting means by preventing the control means from being adversely affected by the characteristics of the line while the operating means is connected to the line. Can be output to

[Brief description of the drawings]

1 to 5 are views showing an embodiment of the facsimile apparatus of the present invention, FIG. 1 is a circuit block diagram of the facsimile apparatus, FIG. 2 is a front view of the operation unit, and FIG. FIG. 4 is a circuit diagram of the dial input switching unit, FIG. 4 is a flowchart showing a manual transmission process, and FIG. 5 is a flowchart showing the transmission process via a control unit such as automatic transmission and abbreviated dial transmission. FIG. 6 is a circuit block diagram showing a conventional facsimile apparatus. 21: Facsimile machine, 26: Switcher (switching means), 27: Telephone circuit, 28: Dial signal transmission unit (dial signal transmission unit), 29: Dial transmission unit 2 (dial transmission unit), 30 ... Operation unit, 30a... Numeric keypad, 30h...

Claims (1)

(57) [Claims] An operation means for inputting dial information such as a telephone number and abbreviated dial, and a dial signal corresponding to the input dial information. Dial signal transmitting means for transmitting a line to the line, switching means for switching and connecting the line to the telephone circuit and the dial signal transmitting means side and the data communication device side, Control means for executing a process, reading a corresponding telephone number by inputting a speed dial from the operation means and outputting the same as dial information, and outputting the dial information output from the control means to the dial signal sending means Dial transmission means, the operation means, the dial signal sending means and the control means, Input switching means for selectively switching and connecting, when the switching means does not receive power supply from the data communication device, maintains a line connected to the telephone circuit and the dial signal transmitting means side, A data communication device, wherein the dial transmission means is constituted by an isolation element and outputs the dial information to the dial signal transmission means in a state of being electrically separated from the control means.