JPH03278653A - Communication equipment - Google Patents

Abstract

PURPOSE:To operate a communication equipment properly by providing a connection detection means detecting that a telephone set connects to a modular jack for telephone set connection. CONSTITUTION:A transmission photosensor SS comprising a light emitting element L1 and a photodetector L2 is provided in the vicinity of a receptacle of a modular jack J2 for telephone set connection. When a connector CN2 of a telephone set is connected to the modular jack J2, an optical axis of the photosensor SS is shut by the connector CN2 and the light to the photodetector L2 is shielded. As a result, whether or not the telephone set is connected is discriminated based on the detection signal of the photosensor SS. When the telephone set is not connected, an alarm display representing no connection of the telephone set is displayed. Thus, disconnection of the telephone set is properly notified.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a communication device that connects a telephone using a modular jack.

[Prior Art] For example, in a facsimile machine, a telephone line is connected to the main unit so that the same telephone line can be used in common with the telephone set, and the telephone set is connected to one main unit. The telephone line can be switched and connected to the telephone or facsimile main unit depending on the situation.

As a result, one telephone line can be used to perform either a telephone call or a facsimile transmission of image information, and the telephone line can be used effectively.

On the other hand, modular jacks and their corresponding connectors (hereinafter referred to as modular jacks) are widely used as physical interfaces for connecting telephones.

In this way, when the telephone is connected using a modular jack, it is easy to move the telephone, and it is also easy to replace the telephone to be connected.

[Problems to be Solved by the Invention] However, with such conventional devices, if the power to the facsimile machine is turned off with the single-piece handset removed, it will not be possible to respond when an incoming call is received, and the calling party will be unable to respond. This resulted in the inconvenience that only a ringing sound was returned and the connection could not be established.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a communication device that can appropriately notify that the telephone is disconnected.

[Means for Solving the Problems] The present invention provides connection detection means for detecting that the present telephone is connected to a modular jack for connecting one telephone;
The device is equipped with a control means for displaying an alarm that the telephone is disconnected when the connection detecting means does not detect a connection. Further, this control means further stops one communication operation control when the connection detection means does not detect a connection.

[Function] Therefore, when the present telephone is not attached, a warning is displayed to that effect, so that the operator can clearly know this situation and can connect one telephone. In addition, when this phone is not connected, communication operations on the 1st unit side are not performed, so for example, if it is necessary to switch the line to the 1st phone side, the 1st phone is not connected. Therefore, inconveniences such as not being able to deal with such situations can be prevented.

[Embodiments] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 shows a Group 3 facsimile machine according to one embodiment of the present invention.

In the figure, a control unit 1 performs control processing of each part of the facsimile machine and facsimile transmission control procedure processing, and a system memory 2 stores control processing programs and processing programs executed by the control unit 1. The parameter memory 3 is used to store various types of data required when executing the fax machine, and constitutes the work area of the control unit 1. The parameter memory 3 is used to store various types of information specific to this group 3 facsimile machine. It is.

The scanner 4 is for reading original images at a predetermined resolution, the plotter 5 is for recording and outputting images at a predetermined resolution, and the operation display section 6 is for operating this facsimile device. It consists of various operation keys and various displays.

The encoding/decoding unit 7 encodes and compresses both signals and decodes the encoded and compressed image information into the original two signals.One image storage bag M8 encodes and compresses both signals. This is for storing a large amount of image information in a different state.

The group 3 facsimile modem 9 is for realizing the group 3 facsimile modem function, and has a low-speed modem function (ν, 2) for exchanging transmission procedure signals.
1 modem), and high-speed modem function (ν, 29 modem, ν, 27ter) mainly for exchanging image information.
modem).

The network control device IO is for connecting this facsimile device to the public telephone line network, and is equipped with an automatic call/receive function. Also, a net control bag! 10 is attached with a telephone Il for making calls.

These control unit 1, system memory 2, parameter memory 3. Scanner 4. Plotter 5. Operation display section 6. Encoding/decoding section 71 image storage device 8, group 3 facsimile modem 9. The network control device 10 is connected to a system bus 12, and data exchange between these elements is mainly performed via the system bus 12.

Further, data is exchanged directly between the network control device 10 and the group 3 facsimile modem 9.

In addition, as shown in Figure 2, on the back side of the device housing there is a power switch PS for turning the power on and off, an inlet for connecting the power cord, IR1, and a modular jack for connecting the telephone line. J1 and a modular jack J2 for connecting the telephone 11.

Here, modular jack J1. J2 and its modular jack Jl, connect J2 to the telephone line or telephone 1
An example of a connector for connecting 1 is shown in FIG.

The modular jack J1 is provided with a predetermined number of pins PN on its inner surface, and the connector CN is provided with a terminal TR that is crimped onto a lead wire RL for connection to each pin PN. . In addition, the knob TB of the connector CN is provided with a claw NL to prevent it from being pulled out.
A groove NZ for engagement with this pawl NL is provided on the inner surface of the modular jack J1.

Further, in this embodiment, as shown in FIG. 4(a), the receiver of the modular jack J2 for connecting the telephone 11 has a transmissive photodetector consisting of one light-emitting element L1 and one light-receiving element L2 near the mouth. A sensor SS is provided.

The position of the photosensor SS is set such that the optical axis of the photosensor SS is blocked by the connector CN, so that the telephone 1 is connected to the modular jack J2.
When the first connector CN is connected, the optical axis of the photosensor SS is blocked by the connector CN, as shown in FIG. 1(b), thereby blocking light from the light receiving element L2.

As a result, the light reception signal of the light receiving element L2 is generated when the connector CN is not connected to the modular jack J2, and is not generated when the connector CN is connected to the modular jack J2. Based on the detection signal of , it can be determined whether the telephone 11 is connected or not.

Figure 5 shows the network control system! An example of lO is shown.

In addition, in the same figure, only one part directly related to the present invention is shown, which is the network control device! The other elements included in 10 will be omitted.

In the figure, the modular jacks Jl, J2 and the connector CN each have six terminals, of which the central two terminals are used.

The line connected via modular jack J1 is 2
It is connected to the common connection ends 21ac and 21bc of the switch 21 of the circuit, and the normally closed contacts 21ab and 21 of the switch 21
bb is connected to the center terminal of modular jack J2.

Further, one normally closed contact 21aa of the switch 21 is connected to one connection end of the primary winding of the transformer 22 for closing the DC loop of the line, and the other normally closed contact 21ba is connected to the switch 23. It is connected to the other connection end of the primary winding of the transformer 22 via.

The secondary side of the transformer 22 is connected to the group 3 facsimile modem 9 via a 2-wire 74-wire converter 24.

Further, the switch 23 and the changeover device 21 are controlled by control signals Sl and S2 outputted from the control section 1, respectively.

On the other hand, a detection signal ST from the photosensor SS that detects that the connector CN2 is connected to the modular jack J2 is output to the control section 1.

With the above configuration, the control section 1 inputs the detection signal ST of the photosensor SS at an appropriate timing and executes the processing shown in FIG. 6.

That is, the control unit 1 detects the detection signal S input at that time.
T checks whether connector CN2 is connected (determination 101), and if it is determined that it is connected (YES in determination 101), normal processing is executed.

On the other hand, if it is determined that the connector CN2 is not connected (the result of judgment 101 is No), a warning display indicating that the telephone set 11 is disconnected is output to the operation display section 6 (processing 102). , prompts the operator to connect the telephone 11, returns to step 1, and does not perform normal processing.

Therefore, when the telephone 11 is not connected,
A warning message indicating that the telephone set 11 is disconnected is displayed, and since processing for normal communication operations is not executed, no incoming call response or sending operation is performed.

Here, as the alarm display, lighting display of a specific light emitting diode, display of an alarm message on a liquid crystal display, etc., sounding of a buzzer, etc. can be used.

FIG. 7 shows another example of a sensor that detects that connector CN2 is connected to modular jack J2.

In the figure, a pin PP that is pushed by the attached connector CN2 is provided inside the modular jack J2, and a filler FL that engages with this pin PP is provided at the rear of the modular jack J2. A mine rotor switch MS is provided.

Therefore, connector CN2 is connected to modular jack J2.
When it is not attached, the pin PP protrudes to the outside of the modular jack J2 due to the biasing force of the filler FL, and the microswitch MS is turned off.

When connector CN2 is attached to modular jack J2, the tip of connector CN2 presses against pin PP.

As a result, the pin PP resists the biasing force of the filler FL.
is pushed out of the modular jack J2, thereby turning on the microswitch MS.

In this manner, by checking the on/off state of the microswitch MS, it is possible to determine the attachment state of the connector CN2 to the modular jack J2.

In addition, connector CN2 for modular jack J2
As a mechanism for turning on and off the microswitch MS depending on the mounting state of the microswitch MS, a mechanism other than the above-mentioned mechanism can be used.

FIG. 8 shows still another example of a sensor that detects that the connector CN2 is connected to the modular jack J2.

As shown in the figure, the two unused outer terminals of connector CN2 are interconnected inside connector CN2, and the outer terminal of modular jack J2 is grounded and the other outer terminal is connected to the comparison signal input terminal on the comparator side, which is pulled up to the power supply VC. Further, a reference voltage Vr formed by dividing the power supply Vc is applied to a reference signal input terminal of the comparator CM.

Therefore, connector CN2 is connected to modular jack J2.
When not connected, the power supply voltage Vc is applied to the comparison signal input terminal of the comparator CM, so that the output signal SK on the comparator side becomes a logic H level.

On the other hand, when connector CN2 is connected to modular jack J2, the comparison signal input terminal on the comparator side is connected to the other terminal on the outside of modular jack J2, connector C
One terminal on the outside of N2, internal wiring of connector CN2,
Since it is connected to the ground level through the other terminal on the outside of the connector CN2 and one terminal on the outside of the modular jack J2, the output signal SK of the comparator CM becomes a logic L level.

In this way, by checking the output signal SK of the comparator CM, it is possible to connect the connector C to the modular jack J2.
It is possible to determine whether N2 is connected.

In this example, a six-pole modular jack is used, but a similar circuit can be constructed using a four-pole or more modular jack.

No. 9 rjiI shows a group 3 facsimile device according to another embodiment of the present invention. In this figure, the same or corresponding parts as in FIG. 1 are designated by the same reference numerals.

The voice response device 13 is for responding by voice with an alarm message to warn that the telephone 11 is disconnected, and its output voice signal is applied to the speaker 14.

That is, when it is detected that the telephone 11 is disconnected,
The control unit 1 is a voice response device! Activate fI3 and output the audio signal of the alarm message.

As a result, an acoustic signal corresponding to the audio signal of the warning message is output from the speaker 14, and the operator is notified of the warning message.

Note that as the speaker 14, a line monitor speaker (I8 shown in the figure) that is normally provided for monitoring signals on the telephone line, or a speaker for outputting a buzzer sound from the operation display unit 6 may be used. I can do it.

Further, as the voice response device 13, a voice response device provided for realizing an answering machine function can be used.

Incidentally, in the above embodiment, the present invention is applied to a group 3 facsimile device, but the present invention can be similarly applied to other communication devices.

[Effects of the Invention] As explained above, according to the present invention, it is possible to detect that the telephone is connected to the modular jack for connecting the telephone, and to detect that the telephone is not connected. When this is detected, an alarm is displayed indicating that the telephone is disconnected, so that the operator can be appropriately notified and the telephone can be connected. Furthermore, when no home telephone is connected, no communication operation is performed on the main body side, resulting in the effect that the communication device can be operated appropriately.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing a Group 3 facsimile device according to an embodiment of the present invention, FIG. 2 is a schematic front view showing an example of the main body housing, and FIG. 3 is a schematic diagram showing an example of a modular jack and connector. Partial sectional view, Fig. 4 (a), (b
) is a schematic diagram showing an example of a sensor for detecting the connection between a modular jack and a connector, Fig. 5 is a block diagram showing an example of a network control device, and Fig. 6 is an example of part of the processing of the control unit. Flowchart, FIG. 7 is a schematic diagram showing another example of a sensor for detecting a connection between a modular jack and a connector, and FIG. 8 is an example of a sensor circuit for detecting a connection between a modular jack and a connector. FIG. 9 is a block diagram illustrating a Group 3 facsimile apparatus according to another embodiment of the present invention. J2...Modular jack, CN2...Connector. SS...Photo sensor, Ll...Light emitting element, Ll.
··Light receiving element. MS...Micro switch, PP...Bin, FL
...Filler CM...Comparator, 13...Voice response device, 14...Speaker.

Claims (2)

[Claims] (1) In a communication device that connects the telephone using a modular jack, connection detection means detects that the telephone is connected to the modular jack for connection to the telephone; A communication device characterized by comprising a control means for displaying an alarm that the telephone is disconnected when the telephone is not detected. (2) The communication device according to claim 1, wherein the control means further stops communication operation control when the connection detection means does not detect a connection.