JPH04132443A - Facsimile equipment with externally mounted telephone set - Google Patents

Abstract

PURPOSE:To prevent a ring signal from being to an externally mounted telephone set and a communication processing means except at ringing by providing a switch circuit which is directly controlled by an output of a detection section and active in the ON/OFF mode to the facsimile equipment. CONSTITUTION:The facsimile equipment is provided with a switch circuit 43, which is directly on/off-controlled by an output of a detection section 17 and leads directly a ring signal Sc from a ring circuit 15 to a changeover switch circuit 14 only when an externally mounted telephone set 30 is in the communication standby state. That is, the switch circuit 43 is directly controlled by an output of the detection section 17 and throws its contact to lead the ring signal Sc to the changeover switch circuit 14 when the externally mounted telephone set 30 is in the communication standby state and opens the relating circuit to prevent the ring signal Sc from being outputted to the changeover switch circuit 14 when the externally mounted telephone set 30 is in the communication state. Thus, the externally mounted telephone set and the circuit at the side of the communication processing means are protected.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention has an external telephone set and has a function of managing communication of the external telephone set, and when a communication call request is made to the external telephone set, the external telephone set is connected to the external telephone set. To provide a facsimile device with an external telephone equipped with a ringing circuit that outputs a ringing signal for ringing a telephone, and in particular to eliminate unnecessary output of the ringing signal to the external telephone and unnecessary detour to other internal circuits. This is related to the first configuration for this purpose.

(Prior Art) Conventionally, there has been a technique shown in FIG. 2, for example, as a technique in this field.

FIG. 2 is a block diagram showing a configuration example of a conventional facsimile apparatus with an external telephone.

This facsimile machine has a facsimile main body 10 connected to an external communication terminal via a telephone line 1, and a cord 20 connected to the facsimile main body 10, and is normally on-hook/off-hook to be in a communication call standby/standby state, respectively. It has an external telephone 30 that is in a communicative state.

The facsimile main body 10 is controlled by a control signal Sa, etc., and has a network control circuit 11 having an interface function with the telephone line 1, etc. The network control circuit 11 includes a facsimile transmitting/receiving unit 12 that sends and receives documents during facsimile communication, and a built-in telephone 13 that has a call function with an external telephone or an external telephone 30.
A changeover switch circuit #114 is connected to the changeover switch circuit 14, and a ringing circuit 15 and a power supply section 16 are connected in sequence to the changeover switch circuit 14.

The changeover switch circuit 14 is connected to the external telephone 30 via the cord 20, and is a circuit that switches and connects the external telephone 30 to the network control diagram &111 or the ringer circuit 15 based on the switching control signal sb. .

The ringing circuit 15 inputs the ringing voltage Va, and the external telephone 3
This circuit outputs a ringing signal Sc, which is, for example, a police box signal, for ringing the external telephone 30 based on the control signal Sa when a communication call request is made to 0.

The power supply unit 16 has a function of outputting the ringing voltage Va to the ringing circuit 15 at a predetermined timing and supplying power supply voltage to each part of the device.

Further, the facsimile machine main body 10 is provided with a hook detection section 17 connected to the cord 20, a control section 18, and an operation panel 19.

The hook detection section 17 has a function of detecting the on-hook state/off-hook state of the external telephone 30 and outputting a detection signal Sd to the control section 18 according to the detection result.

The control unit 18 receives a control signal Sa for controlling each part of the device.
It is a circuit that outputs a detection signal Sd and outputs a switching control signal sb for controlling the switching of the changeover switch circuit 14 based on the detection signal Sd after considering the control status of each part of the device. be.

One operation panel is composed of function keys, a numeric keypad that also serves as the dial button of the built-in telephone 13, various display devices, etc.
It is connected to the.

On the other hand, the external telephone 30 uses, for example, the network control diagram Ill on the side of the facsimile machine main body 10, the built-in telephone 13, etc. as a communication processing means for performing communication processing for the telephone, and communication is managed by the communication processing means. There it is,
A tone ringer circuit 31 and a hook switch 32, which are composed of a handset, a telephone main body, etc., are connected to the facsimile main body 10 via a cord 20, a dial circuit 33 and a telephone call diagram are connected to the cord 20 by the hook switch 32. @34.

The tone ringer circuit 31 is configured using, for example, an oscillation circuit such as a transistor, a speaker, and the like, and is a circuit that rings in response to the ringing signal Sc.

The hook switch 32 is a switch that opens a circuit when the handset is attached to the telephone body, that is, in an on-hook state, and closes when the handset is removed from the telephone body, that is, in an off-hook state.

Dial number F#133 has a dial key, for example,
This circuit outputs a dial signal by operating the dial key.

The telephone call circuit 34 includes a microphone, a speaker, etc. provided in the handset, and is a circuit for converting electrical signals and acoustic signals in order to communicate with other telephones.

Next, the operation will be explained.

The hook detection unit 17 detects whether the external telephone 30 is in an on-hook state or an off-hook state, and outputs a detection signal Sd to the control unit 18 according to the detection result.

If this detection signal Sd indicates an off-hook state, the control unit 18 controls the changeover switch circuit #114 by using the changeover control signal sb, and the changeover switch circuit 14 switches the external telephone 30 to the network control diagram 111 side. However, if the detection signal Sd indicates an on-hook state, the changeover switch circuit 14 connects the external telephone 30 to the ringing circuit 15 side in response to a switching control signal sb from the control section 18.

Here, the switching control of the changeover switch circuit 14 must be performed in consideration of the control state of each part of the device, and is performed by software control by the control section 18 based on the switching control signal sb. This means that even if the external telephone 30 is in an off-hook state, for example, when the external telephone 30 is provided with an on-hook dialing function, the switching control signal sb from the control unit 18 causes the switch to be switched. This is because a setting occurs in which the external telephone 30 needs to be connected to the network control circuit 11 in the circuit 4.

The external telephone 30 is in the on-hook state, the hook switch 32 is open, and the changeover switch circuit 14 is in the on-hook state.
0 is connected to the ringer 815, and when making a call to the external telephone 30 using the built-in telephone @13, first press a predetermined key using one operation panel in order to call the external telephone 30. Perform operations. By this key operation, a control signal Sa is sent from the control section 18 to the ringer #115.

Then, the ringing@l path 15 outputs a ringing signal Sc based on the ringing voltage Va from the power supply section 16. This ringing signal Sc is output to the external telephone 1130 via the changeover switch circuit 14 and the cord 20.

The ringing signal Sc input to the external telephone 30 is supplied to the tone ringer circuit 31, and the tone ringer circuit fi431 that receives the ringing signal Sc generates a predetermined ringing tone, causing the external telephone 30 to ring.

When the user of the external telephone 30 learns of a communication call request from another party by the ringing of the external telephone 30 and picks up the handset of the external telephone 30, the hook switch 32 closes and the external telephone 30 is disconnected. Goes off-hook. Then, the hook detection section 17 detects the off-hook state of the external telephone 30 and outputs a detection signal Sd indicating the off-hook state to the control section 18. As a result, the control unit 18 outputs a switching control signal sb corresponding to the off-hook state to the changeover switch circuit 14, and the changeover switch circuit 14 switches the external telephone 30 from the ringer circuit 15 side to the network control 4811 side. Connecting.

When the changeover switch circuit 14 is switched to the network control circuit 11 side, the external telephone 30 and the built-in telephone 13 become communicable, and a telephone conversation can be made.

(Problems to be Solved by the Invention) However, the facsimile apparatus with an external telephone having the above configuration has the following problems.

In a conventional facsimile machine with an external telephone, a ringing signal SC from the ringing circuit 15 is input to the external telephone 30, the external telephone 30 rings, and when the user picks up the handset, the hook switch 32 is activated. is closed, the hook detection section 17 detects this, and the switching control signal s from the control section 18 is output.
b, the changeover switch circuit 114 switches the external telephone 30 from the ringer circuit 15 side to the network control circuit 11 side.

However, the changeover switch circuit 14 needs to be switched after considering whether the external telephone 30 is on-hook or off-hook, as well as the control status of each part of the device. is controlled by software.

Therefore, after the handset of the external telephone 30 is picked up and the hook switch 32 is closed, the transfer switch circuit 1
It takes a long time to perform the switching of the changeover switch circuit 14, resulting in a delay in the switching of the changeover switch circuit 14. Due to this operation delay, a state occurs in which the changeover switch circuit 14 connects the external telephone 30 and the ringing circuit 15 even though the hook switch 32 is closed, and the ringing signal S
There is a possibility that C may be passed around to the dial circuit 33 and the telephone call line 1 ¥834.

Furthermore, depending on the configuration of the changeover switch circuit 14, the ringing signal Sc from the ringing circuit 15 may go around to the network control circuit 11 side, albeit momentarily, due to the contact opening/closing bounce of the changeover switch circuit 14. There is sex.

Such a ringing signal Sc has the following reasons:
- A high voltage signal with a maximum voltage value of 100V or more is used.

That is, the external telephone 30 is usually a regular telephone that can be used by directly connecting to a telephone circuit. If the tone ringer circuit 31 is to be driven by the ringing signal Sc, it is necessary to use the ringing signal Sc having a voltage corresponding to the ringing signal. However, the ringing signal used in ordinary telephones is generally an alternating current signal with an effective value of, for example, about 75V, so if you try to generate the ringing signal Sc using an alternating box signal with an equivalent effective value, The ringing signal Sc has a maximum voltage value of 10
This results in a high voltage signal of 0V or, in some cases, about 150V.

If the high-voltage ringing signal Sc goes around to the dial circuit H33, the telephone call circuit 34, etc. of the external telephone 30, there is a risk of damaging those circuits. Furthermore, if the ringing signal Sc goes around to the telephone call circuit 34, when the user picks up the handset in response to a call, a pulsed sound due to the ringing signal Sc may be heard from the speaker, which deteriorates the rider's performance. . Furthermore, even if it is instantaneous, such a high voltage ringing signal Sc
If applied to the network control circuit 11 side, there is a risk that the network control circuit 11 or the circuits connected thereto may be destroyed.

The present invention solves the problem that the prior art had, and the ringing signal is applied to the external telephone at a time other than ringing due to a delay in the operation of the software-controlled changeover switch circuit, causing damage to the external telephone and damage to the jockey's jockey. We have developed a facsimile machine with an external telephone set that solves the problem of deterioration and the risk of a ringing signal being applied to the communication processing means side due to bounce of the contacts of the changeover switch circuit and causing trouble to the circuit on that side. This is what we provide.

(Means for Solving the Problems) In order to solve the above problems, the present invention provides a ringing circuit that outputs a ringing signal when a communication call is requested, and an external telephone that rings based on the ringing signal when waiting for a communication call. , a communication processing means for performing communication processing with the external telephone when the external telephone communicates; and a communication processing means that performs communication processing with the external telephone when the external telephone is communicating; a changeover switch circuit for switching to the ringing circuit or the communication processing means; a detection unit for detecting whether the external telephone is on standby for a communication call or in communication; and control for outputting the switching control signal based on the output of the detection unit. In the facsimile apparatus with an external telephone, the facsimile apparatus is directly controlled on and off by the output of the detection section, and the ringing signal from the ringing circuit is switched only when the external telephone is on standby for a communication call. A switch circuit is provided for outputting to the switch circuit.

(Function) According to the present invention, since the facsimile apparatus with an external telephone is configured as described above, the ringing signal is outputted from the ringing circuit when a communication call is requested to the external telephone in a waiting state for a communication call. , the external telephone rings in response to the ringing signal.

Then, in order to communicate (call) using the external telephone, the user performs a predetermined operation to shift the external telephone from a call standby state to a communication state. This operation varies depending on the type of external telephone, but examples include the following.

That is, for example, the external telephone has a hook switch that is turned on and off by attaching and detaching the handset from the telephone main body, and the external telephone is in an on-hook state or an off-hook state based on the on/off state of the hook switch. is detected by the detection unit, the on-hook time is the time of waiting for a call, and the off-hook time is the time of communication,
By picking up the handset from the main body of the telephone and hooking it up, the call standby state is shifted to the communication state.

However, this excludes cases where, for example, the terminal has an on-hook dialing function and these functions enable communication in an on-hook state. Furthermore, if the external telephone is a manually operated switch instead of a hook switch, the call standby state is shifted to the communication state by manually operating the switch.

When the external telephone shifts from the call standby state to the communication state in this way, the output of the detection section changes based on the transition. The output of this detection section is directly supplied to the switch circuit, and this output directly controls on/off of the switch circuit.

That is, the switch circuit is directly controlled by hardware based on the output of the detection section, and the circuit is closed (turned on) only when the external telephone is on standby for a communication call, and the ringing signal is sent to the changeover switch circuit. When the external telephone is in communication, the circuit is open (turned off) and the ringing signal is not output to the changeover switch circuit.

Therefore, the problem mentioned above can be solved.

(Embodiment) FIG. 1 is a block diagram of the configuration of a facsimile apparatus with an external telephone, showing an embodiment of the present invention.

This facsimile machine includes an external telephone 30 having the same configuration as that shown in FIG. 2, as well as a facsimile main body 40 connected to the external telephone 30 via a cord 20.

The facsimile machine main body 40 includes a network control circuit 11, a changeover switch circuit 14, a ringing circuit 15, a power supply section 16, a hook detection section 17, a control section 18, and an operation panel 19, which have the same configuration as shown in FIG. It has a facsimile transmitting/receiving section 41 and a built-in telephone 42.

The facsimile transmitting/receiving unit 41 includes a modem 41a that is connected to the network control circuit 11 and performs modulation and demodulation of transmission signals in facsimile communication performed via the telephone line 1, and data compression, expansion, etc. of transmission data transmitted and received by the transmission signals. an image processing section 41b that inputs a document having transmission data, reads the transmission data, and outputs it to the image processing section 41b; and a reading section 41c that inputs and receives transmission data from the outside via an image processing section 42b. It has a recording section 41d that prints out data.

The built-in telephone 42 includes, for example, a dial line #142a that is dialed by one key operation on the operation panel and generates a dial signal, and a handset, etc., and is used for calls with the external telephone 30 or for external communications connected to the telephone line 1. It has a communication circuit 42b that performs conversion between electrical signals and acoustic signals in order to communicate with devices.

Furthermore, the facsimile apparatus main body 40 is provided with a switch circuit 43, which is a feature of this embodiment.

This switch circuit 43 is provided between the changeover switch circuit 14 and the ringing circuit 15, and is configured using, for example, a switching transistor. opening/closing)
This circuit is controlled and turns on when the external telephone 30 is on standby for a communication call, and turns off when the external telephone 30 is communicating.

Next, the operation will be explained.

When using this facsimile machine to send and receive transmission data through normal facsimile communications, the other party's fax number is dialed by pressing one key on the operation panel, and the telephone line 1 is connected to the other party's facsimile machine. When the transmission data of the original sent to 41c is read, the data is sent to the image processing unit 41b and the modem 41a.
And network control times #! 11 to the telephone line 1.

Further, when transmission data is sent from the outside via the telephone line 1, the data is printed out by the recording section 41d via the image processing section 41b.

On the other hand, when the external telephone 30 is in the on-hook state and the hook switch 32 is open, the detection unit 17 detects that the rack switch 32 is in the on-hook state and outputs a detection signal Sd indicating the on-hook state. . This detection signal Sd is output to the switch circuit 843 and also to the control section 18. The switch circuit Fl@43 is directly controlled by hardware by this detection signal Sd to close the circuit and turn on. On the other hand, in response to this detection signal Sd, the control section 18 takes into consideration the control states of each part of the device and switches the switching control signal sb corresponding to the detection signal Sd indicating the ON/OFF state to switch F! @14, thereby causing changeover switch 4 Fl@14 to switch and connect the external telephone 30 to the network control circuit vf111 side.

At this time, for example, the external telephone 30 is connected to the built-in telephone 42.
When making a phone call, first, a predetermined key operation is performed using the operation panel 19 in order to call the external telephone 30. By this key operation, a control signal Sa is sent from the control section 18 to the ringing circuit 15.

Then, the ringer F#115 outputs a ringing signal Sc based on the ringing voltage Va from the power supply section 16. This ringing signal Sc is transmitted to the switch circuit 43 and the changeover switch circuit 14.
The signal is output to the external telephone 30 side through the .

The ringing signal Sc input to the external telephone 30 is supplied to the tone ringer circuit 31, and the tone ringer circuit ii'831 that receives the ringing signal Sc generates a predetermined ring tone, causing the external telephone 30 to ring.

When the user of the external telephone 30 learns of a communication call request from another party by the ringing of the external telephone 30 and picks up the handset of the external telephone 30, the hook switch 32 closes and the external telephone 30 is disconnected. Goes off-hook. Then, the hook detection section 17 detects the off-hook state of the external telephone 30 and outputs a detection signal Sd indicating the off-hook state to the switch circuit 43 and the control section 18.

Upon receiving the detection signal Sd, the switch circuit 43 is directly controlled by hardware according to the detection signal Sd to open and turn off the circuit. On the other hand, upon receiving the detection signal Sd, the control section 18 outputs a switching control signal Sb corresponding to the off-hook state to the changeover switch circuit 14 after considering the control state of each part of the apparatus. This causes the changeover switch circuit 14 to switch to the network control circuit 11.
Switch the connection to the side.

As described above, when the switch circuit 43 is turned off and switched to the selector switch circuit 14 or the network control circuit 11 side, the external telephone 30 and the built-in telephone 42 become communicable, and a call can be made.

This embodiment has the following advantages.

In the facsimile apparatus with external telephone of this embodiment, a switch circuit 43 is newly provided between the changeover switch circuit 614 and the ringing circuit ff815. Therefore, when the external telephone 30 is hooked up, the hook detection section 17 detects this, and the output of the hook detection section 17 causes the switch circuit 4 to
3 is directly controlled by hardware without going through the control unit 18 (software control), and is switched from the on state to the off state.

Therefore, while the external telephone 30 is hooked up,
The switch circuit 43 is switched, for example, the changeover switch 81
There may be a delay in the switching of switch 4, or the switch circuit 1 may be delayed.
4, even if the contact bounce occurs, the external telephone 30
and network control circuit 11 (regularly, the ringing signal Sc can be prevented from being applied), and damage to the external telephone 30 and facsimile machine main body 40 and deterioration in usability can be prevented.

Note that the present invention is not limited to the illustrated embodiment, and various modifications are possible. Examples of such modifications include the following.

(i> In the facsimile machine shown in FIG. 1, the configurations of the external telephone 30 and the facsimile machine main body 40 can be modified. Examples thereof include the following.

■ The external telephone 30, for example, has a tone ringer circuit 31.
Various modifications are possible, such as configuring it with a bell circuit or the like, or changing the connection state of the hook switch 32. Further, the present embodiment can also be applied to a case where the external telephone 30 is equipped with an on-hook dialing function, a remote control function for the facsimile machine main body 40, and the like.

Furthermore, the present embodiment can also be applied to a configuration in which a plurality of external telephones 30 are provided, for example.

■ The facsimile device main body 40 includes a network control circuit 11, a changeover switch circuit 14, a ringing circuit 15, a power supply section 16, a hook detection section 17, a control section 18, one operation panel, a facsimile transmission/reception section 41, a built-in telephone 42, and a switch. circuit 4
3, but this is merely an example of the configuration, and various modifications such as changing or deleting the circuit configuration, or adding other circuit configurations are possible.

For example, in the above embodiment, the ringing circuit 15 receives the control signal S
Although the configuration is such that the ringing signal Sc is output based on the control signal Sa, it is not always necessary to output the ringing signal Sc based on the control signal Sa. For example, the ringing voltage ■a set to be output at a predetermined timing The ringing signal Sc may be outputted by the output, or the ringing signal Sc may be outputted by other key operations.

Although the control unit 18 is configured to have a function of controlling the entire facsimile machine, the configuration, control function, etc. can be changed.

Although the explanation of the circuit that rings on the facsimile machine main body 40 side when calling the built-in telephone 42 from the external telephone 30 is omitted, it can be provided as appropriate. The built-in telephone 42 may not necessarily be provided depending on the specifications of the facsimile machine.

(11) The functions and operations of the facsimile machine shown in Figure 1 are as follows:
The present invention is provided as an example to clarify the characteristics of the above embodiment, and the present invention is not limited to the above embodiment in any way unless it exceeds the gist of the present invention. For example, as a setting when the ringing signal Sc is output from the ringing circuit 15, in the above embodiment, the ringing signal Sc is output when a call is made between the external telephone 30 and the built-in telephone 42. However, the ringing signal Sc may also be configured to be output when, for example, a call from the outside via the telephone line 1 is transferred from the facsimile main body 40 to the external telephone 30. In addition, the ringing signal Sc and the ringing voltage Va
Timing control regarding the output of can be set as appropriate.

(Effects of the Invention) As described in detail above, according to the present invention, the switch circuit is provided to configure a facsimile apparatus with an external telephone, so that the switch circuit is directly controlled by hardware by the output of the detection section. It operates on and off. Therefore, the external telephone is switched from the communication call standby state to the communication state, and the switch circuit is switched from the on state to the off state.

Therefore, in the facsimile apparatus with an external telephone of the present invention, it is possible to prevent the ringing signal from being applied to the external telephone and the communication processing means, and to protect the external telephone and the communication processing means side circuit. , it is possible to reliably prevent damage to the external telephone and communication processing means side circuit, and deterioration in usability.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a facsimile apparatus with an external telephone according to an embodiment of the present invention, and FIG. 2 is a block diagram of a conventional facsimile apparatus with an external telephone. DESCRIPTION OF SYMBOLS 1... Telephone line, 14... Changeover switch circuit, 30 External telephone, 32... Hook switch, 40... Facsimile machine main body, 41... Facsimile transmitting/receiving section, 42
...Built-in telephone, 43...Switch circuit, Sa...Control signal, sb...Switching control signal, Sc...Ring signal, Sd...Detection signal, Va...Ring voltage.

Claims (1)

[Scope of Claims] A ringing circuit that outputs a ringing signal when a communication call is requested, an external telephone that rings based on the ringing signal when waiting for a communication call, and communication with the external telephone when the external telephone communicates. a communication processing means for performing processing; a changeover switch circuit that switches the external telephone to the ringing circuit or the communication processing means depending on whether the external telephone is on standby for a communication call or in communication based on a switching control signal; a detection section that detects whether the external telephone is on standby for a communication call or during communication, and a control section that outputs the switching control signal based on the output of the detection section,
In the facsimile apparatus with an external telephone, the on/off control is directly performed by the output of the detection section, and a ringing signal from the ringing circuit is output to the changeover switch circuit only when the external telephone is on standby for a communication call. A facsimile device with an external telephone set, characterized in that it is provided with a switch circuit that performs the following functions.