JPH09200486A - Facsimile equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain the facsimile equipment which can prevent a communication or malfunction from occurring owing to the input of noise from an external telephone terminal. SOLUTION: This facsimile equipment has a network control unit 20 equipped with the external telephone line where a terminal is connected, external telephone terminal unjust noise detection parts 28 and 29 which are connected to external telephone terminals T1 and T2, and T1' and T2' and detect noise from the terminals, and a notifying means 11 and a display means 1 such as an LED or LCD; when the external telephone terminal unjust noise detection part 28 and 29 detect noise, the noise detection is notified by the notifying means 11 and display means 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a facsimile apparatus, and is applicable to a network control apparatus having an external telephone terminal.

[0002]

2. Description of the Related Art In recent years, the number of terminals and services that use telephone lines has increased remarkably, and a plurality of terminals are connected in parallel on one line as a connection form. Normally, a facsimile device is provided with an external telephone terminal, and a normal telephone (terminal) is connected to a corresponding terminal of a facsimile network control unit (hereinafter referred to as "NCU") to switch the telephone and the facsimile. The function to use is provided.

Various terminals are connected to the external telephone terminal of such a facsimile machine. However, depending on the connected terminal, the terminal itself does not properly comply with the regulation by JATE, and noise is generated to cause a communication error. There are some things that adversely affect the normal operation of the facsimile machine, such as malfunction and malfunction.

[0004]

An invention relating to detection of signal noise level related to communication is disclosed in Japanese Patent Laid-Open No. 51303/1993.
A facsimile device described in Japanese Patent No. 57 is known.
The facsimile apparatus disclosed in Japanese Patent Laid-Open No. 5-130357 aims at improving the S / N ratio and the line passing rate even when the signal level is low. In order to achieve such an object, it is determined whether or not to increase the transmission level of the facsimile on the transmission side based on the reception level of the modem detected by the level detection device, and the increase is transmitted to the facsimile on the transmission side. Has become. The facsimile on the transmission side raises the transmission level according to the amount of increase in the transmission, and raises the signal level while keeping the floor noise on the line as it is, and as a result, the S / N ratio is improved. .

However, the facsimile apparatus disclosed in Japanese Patent Laid-Open No. 5-130357 changes the S / N ratio on the transmitting side according to the receiving characteristics (noise, etc.) from the line.
It is against the noise from the line or the noise of the terminal itself, and does not prevent the noise input from the terminal such as a telephone connected to the external telephone terminal of the NCU.

The present invention has been made in order to solve the above-mentioned problems of the prior art, and prevents the occurrence of communication error or malfunction due to noise input from an external telephone terminal. It is an object of the present invention to provide a facsimile device capable of

[0007]

According to the first aspect of the present invention,
A network control device equipped with an external telephone terminal to which the terminal is connected, an external telephone terminal unwarranted noise detection unit for detecting noise from the terminal by connecting to the external telephone terminal, LED or LC
It is characterized in that it has a display means such as D, and when the external telephone terminal improper noise detecting section detects noise, the display means notifies the noise detection.

According to a second aspect of the present invention, the network control device has a plurality of external telephone terminals, detects which terminal connected to the external telephone terminals is producing noise, and notifies by the notification / display means. Alternatively, it is displayed.

According to a third aspect of the present invention, when a terminal generating noise is detected, information such as the noise detection time and the address of the external telephone terminal of the terminal generating noise is printed on the output means. It is characterized by having a detection information output function.

The invention according to claim 4 is characterized in that it is possible to select whether or not to use the detection information output function.

According to a fifth aspect of the present invention, it is possible to select whether or not to use the noise detection of the external telephone terminal unwarranted noise detection section and the notification and display of noise by the notification / display means.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of a facsimile apparatus according to the present invention will be described below with reference to the drawings. In FIG. 1, the facsimile apparatus is mainly composed of respective members such as an operation display unit 1, a CPU 2, a RAM 3, a ROM 4, a scanner 5, a plotter 7, a communication control unit 9, a modem 10, an external telephone terminal noise notification unit 11, and an NCU 20. Has been done.

The operation display unit 1, the CPU 2 and the R as described above
AM3, ROM4, scanner 5, plotter 7, communication control unit 9, modem 10, external telephone terminal noise notification means 11
Are connected to each other, and are configured so that signals (data) can be exchanged. It should be noted that the scanner 5 and the plotter 7 are not directly connected, and the I / F circuit 6 and the I / F circuit 6 are not connected.
It is connected via the / F circuit 8.

The operation display unit 1 is a display means, and is provided with a numeric keypad or the like as an input device and an LCD (liquid crystal display device) or the like as a display device. Here, various operations and setting conditions of the facsimile device can be viewed here. It is designed so that it can be removed. For example, it is possible to select or confirm whether or not to start the original transmission, specify the original transmission destination, set external telephone terminal illegal noise detection, notification, and display function described later. The CPU 2 controls the system of the facsimile machine. Read data and received data obtained by the scanner 5 are stored in the RAM 3.
A program for controlling the facsimile is stored in the ROM 4 in advance. The scanner 5 is I /
It is connected to the F (interface) circuit 6 so that the original can be read during facsimile transmission or copying. The plotter 7, which is an output means, is also connected to the I / F circuit 8 and writes and outputs on paper at the time of facsimile reception and copying. The communication control unit 9 performs various controls related to communication, and the modem 10 modulates transmission data and demodulates reception data. Further, when it is determined that the external telephone terminal noise notifying means 11 is transmitting noise above a certain standard, the terminal connected to the external telephone terminal of the NCU 20 described later notifies the terminal installer and the operator. Will be notified.

An NCU 20 is connected to the communication controller 9. The NCU 20 includes an on-hook detection unit 21, a ringing detection unit 22, a dial pulse transmission unit 23, a rectifying diode bridge 24, an insulating transformer 25, a CML relay 26, an on-hook external telephone on-communication detection unit 27, and an external telephone terminal unwarranted noise detection unit. It is composed of 28, 29 and the like.

Further, the NCU 20 has telephone line terminals L1 and L2 connected to a telephone line, external telephone terminals T1 and T2 to which terminals such as telephones are connected, and an external telephone terminal T.
1'and T2 'are provided. The telephone line terminal L2 is connected to the ringing detector 22 via the on-hook detector 21. The telephone line terminal L1 is directly connected to the ringing detector 22.

The external telephone terminals T1 and T2 and the external telephone terminals T1 'and T2' are connected to the CML relay 26. The external telephone terminal T2 ′ is connected to the external telephone terminal unwarranted noise detecting section 28, and the external telephone terminal T2 ′ is connected to the external telephone terminal unwarranted noise detecting section 29. The lines drawn from the terminal false noise detection unit 29 are gathered together by the connection unit 35 and connected to the terminal 26b of the CML relay 26. In addition, the line connected to the external telephone terminal T1 and the line connected to the external telephone terminal T1 ′ are also N
In the CU 20, they are gathered together at the connection portion 36 and connected to the terminal 26 a of the CML relay 26.

Further, the ringing detection section 22 includes an NCU.
20 is connected to an external communication control unit 9. The terminal 26c of the CML relay 26 is connected to the external telephone on-hook detection unit 27 during communication. The terminal 26d is connected to the ringing detection unit 22 by being connected to the line connecting the telephone line terminal L1 to the ringing detection unit 22. Further, the terminal 26f is connected to the ringing detection unit 22 by being connected to the line connecting the telephone line terminal L2 to the ringing detection unit 22.
Further, the terminal 26e of the CML relay 26 is grounded. Further, the CML relay 26 is directly connected to the communication control unit 9 outside the NCU 20 and is configured to be controlled by the communication control unit 9. Further, the external telephone on-hook detection unit 27 during communication is also connected to the communication control unit 9.

The on-hook detection section 21 in the NCU 20 detects off-hook and polarity reversal of the external telephone during facsimile and standby. The dial pulse sending unit 23 can open and close the DC circuit and send dial pulses. In the isolation transformer 25, an AC signal is transmitted between the modems 10 while being insulated from the DC circuit. In the CML relay 26, the external telephone is set on the telephone line side during standby, and the switch is switched during facsimile communication to disconnect the telephone line side. External telephone on-hook detection unit 2 during communication
In 7, it is detected that the external telephone goes off-hook during the facsimile communication.

An external telephone terminal illegal noise detecting section 2 is provided on a line connecting the CML relay 26 and the external telephone terminal T2.
An external telephone terminal illegal noise detector 29 is connected to a line 8 connecting the CML relay 26 and the external telephone terminal T2 '. External telephone terminal illegal noise detector 2
In Nos. 8 and 29, it is possible to detect the unjust noise input from the external telephone terminals T1 and T2 and the terminals connected to the external telephone terminals T1 ′ and T2 ′.

Next, the external telephone terminal illegal noise detecting section 2
The configurations of Nos. 8 and 29 will be described. In FIG. 2, the external telephone terminal unwarranted noise detection unit includes an end portion 31a connected to the external telephone terminal, an end portion 31b connected to the CML relay 26, and an end portion 31c connected to the communication control unit 9. 31
d. Further, resistors R1 and R2, a photocoupler 3 are provided inside the external telephone terminal unwarranted noise detector.
0 and 30 are provided. With the resistors R1 and R2,
The threshold voltage value at which the photocouplers 30 and 30 turn on is determined. Therefore, when the noise sent from the external telephone terminal exceeds the threshold noise value, the photocouplers 30, 30 are turned on,
From the end portions 31c and 31d to the communication control unit 9, Low
An Active pulse is sent out, and this LowActive
With the e pulse, the communication control unit 9 determines that unfair noise is detected. The two end portions 31c and 31d for outputting to the communication control unit 9 are provided for detecting irrelevant noise regardless of the polarity.

Next, an operation example of the facsimile apparatus having the above-mentioned structure will be described. First, it is checked whether or not the external telephone terminal illegal noise detection / notification / display function is selected on the operation display unit 1. If it is not selected, that is, if it is No, the process is terminated.
In the next step, the external telephone terminal illegal noise detection unit 2
At 8, 29 it is checked whether an unwarranted noise has been detected. If it is not detected, that is, if it is No, the process jumps immediately before this step. When the improper noise is detected, the CPU 2 is notified via the communication control unit 9 that the improper noise has been detected. CPU2
Then, recognize from which external telephone terminal the improper noise was input.

In the next step, the external telephone terminal noise announcing means 11 is activated, and the number of the external telephone terminal is displayed on the operation display unit 1 based on the address of the external telephone terminal obtained by the above recognition. The terminal connected to N. Displays whether it is G or not. Further, in the next step, the ringing of the external telephone terminal noise notification means 11 is stopped after a predetermined time has elapsed. Further, in the next step, in the operation display unit 1, N. It is checked whether the setting for outputting the detection information of the G terminal or the like to the plotter 7 is made. If the setting has not been made, that is, if No, the process is terminated. When the setting is made, the address of the external telephone terminal to which the terminal transmitting noise as a detection terminal is connected, the time when the false noise is detected, and the like are output to the plotter 7. In this way, by outputting to the plotter 7 the address of the external telephone terminal to which the terminal transmitting noise as the detection terminal is connected, the time when the false noise is detected, etc. on the paper,
Even if there is no operator on the spot, by looking at the paper later, it is possible to know the terminal that causes the unjust noise.

In some cases, the terminal that causes noise is connected to the external telephone terminals T1, T2, T of the facsimile machine.
It may be necessary to connect to 1'and T2 'and use it urgently. In such a case, if the external telephone terminal unwarranted noise detection units 28, 29, the external telephone terminal noise notification means 11, and the means for outputting the unwarranted noise detection information to the plotter 7 are operating, they must be used urgently. Sometimes terminals that don't have to be used quickly. In consideration of such a situation, the external telephone terminal illegal noise detection units 28 and 29, the external telephone terminal noise notification means 11, and the means for outputting the illegal noise detection information to the plotter 7 are designated on the operation display unit 1. Depending on, it is possible to select whether or not to operate.

As shown in FIG. 4, when it is desired to detect the external telephone terminal transmitted undesired noise, a predetermined operation is carried out from the operation display unit 1 and the external telephone terminal unjustified noise detection units 28, 2 are detected.
9 and external telephone terminal noise notification means 11 is driven,
False noise detection and notification mode is entered.

Further, as shown in FIG. 5, when it is desired to output the external telephone outgoing illegal noise detection information to the plotter, a predetermined operation is performed from the operation display unit 1 to enter the external telephone outgoing illegal noise detection information output mode. enter.

According to the facsimile apparatus having the above-mentioned configuration, the external telephone terminal illegal noise detecting sections 28 and 29 are
In addition to detecting the unjust noise from the external terminal, the fact that the unjust noise is detected is notified to the operator by the external telephone terminal noise notifying means 11 or displayed on the operation display unit 1 to inform the operator. Therefore, it is possible to prevent adverse effects such as a communication error and a malfunction of the facsimile machine caused by the input of unfair noise.

Further, even if there are a plurality of external telephone terminals and the number of terminals to which the plurality of external telephone terminals are connected is plural, which terminal is connected to which external telephone terminal by the operation display unit 1. Since it is possible to recognize whether or not is emitting unreasonable noise, it is possible to quickly and quickly remove the terminal that emits unreasonable noise and promptly eliminate the problem.

Further, when a noisy terminal is detected, information such as the noise detection time and the external telephone terminal address of the noisy terminal is printed on the plotter 7, which is the output means. Since it has an output function, it is possible to detect an illegal terminal later even when there is no operator on the spot when the illegal noise is detected. Further, since it is possible to select whether or not to use the detection information output function on the display operation unit 1, it is set not to use the detection information output function when an operator is around the facsimile machine, and Can contribute to savings.

Further, it is possible to select whether or not to execute the noise detection of the external telephone terminal unwarranted noise detection units 28 and 29, and the notification and display of noise by the external telephone terminal noise notification means 11 and the operation display unit 1. Therefore, in an emergency, the external telephone terminal can be quickly connected to the external telephone terminal, for example, when it is necessary to connect a terminal that generates undue noise.

[0031]

According to the invention as set forth in claim 1, the external telephone terminal unwarranted noise detecting section detects unjust noise from the external terminal and the unjust noise is detected. Since it is possible to notify the operator by notifying by the terminal noise notifying means or by displaying it on the operation display unit, it is possible to prevent a communication error or malfunction of the facsimile machine caused by the input of unfair noise. It is possible to prevent adverse effects.

According to the second aspect of the present invention, even if there are a plurality of external telephone terminals and the number of terminals to which a plurality of the external telephone terminals are connected is plural, which external telephone terminal is displayed by the operation display unit. Since it is possible to recognize whether the terminal connected to the telephone terminal emits the unjust noise, it is possible to quickly remove the terminal that emits the unjust noise and quickly solve the problem.

According to the third aspect of the present invention, when a noisy terminal is detected, information such as the noise detection time and the external telephone terminal address of the noisy terminal is printed on the output means. Since it has a detection information output function, it becomes possible to detect an illegal terminal later even when there is no operator at the time of detecting the illegal noise.

According to the fourth aspect of the present invention, whether or not the detection information output function is used can be selected by the display operation unit. Therefore, when the operator is present around the facsimile apparatus, the detection information output function is provided. To avoid using
It becomes possible to contribute to saving paper.

According to the fifth aspect of the present invention, whether or not the noise detection by the external telephone terminal unwarranted noise detection section and the notification or display of noise by the external telephone terminal noise notification means or the operation display section is executed or not. Since it is possible to select whether or not to connect a terminal that unavoidably generates audible noise to the external telephone terminal in an emergency, it can be quickly connected and used.

[Brief description of drawings]

FIG. 1 is a block diagram conceptually showing an embodiment of a facsimile apparatus according to the present invention.

FIG. 2 is a diagram conceptually showing an embodiment of an external telephone terminal unwarranted noise detection section used in the above facsimile apparatus.

FIG. 3 is a flowchart showing an operation example of the above facsimile device.

FIG. 4 is a flow chart showing an example of setting the false noise detection / notification display means on the operation display unit in the same facsimile apparatus.

FIG. 5 is a flowchart showing an example of setting, on the operation display unit, whether or not to output the detection information to the output unit in the facsimile device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Display means 7 Output means 11 Notification means 20 Network control device 28 External telephone terminal illegal noise detection section 29 External telephone terminal illegal noise detection section T1 External telephone terminal T2 External telephone terminal T1 'External telephone terminal T2' External Telephone terminal

Claims (5)

[Claims] 1. A network control device having an external telephone terminal to which a terminal is connected, an external telephone terminal illegal noise detection unit for detecting noise from the terminal by connecting to the external telephone terminal, L
A facsimile apparatus comprising an informing / displaying means such as an ED or LCD, and informing the noise detection by the informing / displaying means when the external telephone terminal improper noise detecting section detects noise. 2. The network control device has a plurality of external telephone terminals, detects which terminal connected to the external telephone terminal is producing noise, and informs or displays by the notifying / displaying means. The facsimile apparatus according to claim 1, which is characterized in that. 3. A detection information output function for printing information such as a noise detection time and an address of an external telephone terminal of the noise generating terminal on the output means when a noise generating terminal is detected. The facsimile apparatus according to claim 2, further comprising: 4. The facsimile apparatus according to claim 3, wherein it is possible to select whether or not to use the detection information output function. 5. The method according to claim 1, wherein it is possible to select whether or not to use the noise detection of the external telephone terminal unwarranted noise detection section and the notification and display of noise by the notification / display means. The facsimile machine according to 3 or 4.