JPH0119490Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to an improvement of a facsimile device in which a telephone set and a facsimile device main body are connected in parallel to a line to perform communication.

[Technical background of the invention]

Conventionally, there is a type of facsimile apparatus in which a facsimile apparatus main body 2 and a paired telephone set 3 are connected in parallel to a subscriber line 1 as shown in FIG. 1 to perform facsimile communication.
Such a facsimile device operates as follows during transmission.

First, lift the handset of the telephone 3 and close the switch switches HK1 and HK2, thereby forming a DC loop between the telephone 3 and the exchange, and then close the pushbutton dial 3 of the telephone 3.
Operate 1. Then, the telephone set 3 generates a dial signal from the dial sender 32 and sends it to the subscriber line 1 in accordance with the operation information of the push button dial. This establishes a connection with the other party's device, and a response signal is sent back from the other party's device.The operator confirms this with the handset 33 of the telephone 3 and presses the send button (not shown) on the facsimile device body 2.
When you press , the facsimile device main body 2 controls the control means 2.
1 detects it, closes relay contact rl ₁ to maintain the DC loop, and relay contact rl ₂ ,
rl ₃ to the facsimile device main body 2 side and connect the facsimile device main body 2 to the subscriber line 1. When this connection is terminated, the facsimile device main body 2 performs signal processing such as band compression on the image information read and scanned by the reading section 22 by the control means 21, modulates it by the modulation/demodulation circuit 23, and sends it to the output circuit 24.
is sent to subscriber line 1 via. On the other hand, if the response signal from the other party's device is a busy tone, the operator turns on the handset, so the switch switches HK1 and HK2 are opened, the DC loop is opened, and the telephone 3 returns to its initial state. do.

The receiving operation of this facsimile device is entirely controlled by the control circuit 21 of the facsimile device main body 2. That is, when the detection circuit 25 detects a 16Hz calling signal that has arrived via the subscriber line 1, the control means 21 first switches the relay contacts rl 2 and rl 3 to the facsimile device main body 2 side, and then switches the relay contacts rl ₂ and rl ₃ to the facsimile device main body 2 side, and then switches the relay contacts rl 2 and rl 3 to the facsimile device main body 2 side. A response signal is generated from the subscriber line 1 and sent to the subscriber line 1. Then, a facsimile signal arrives from the other party's device, and this signal is transmitted to the input circuit 2.
6 and received by the modulation/demodulation circuit 23, image information is reproduced from this received signal and supplied to the recording section 27 for recording scanning. In other words, this facsimile device is capable of automatic reception operation.

[Problems with background technology]

However, when transmitting, the conventional device described above always has to off-hook the handset and call the other device and check the connection status of the line, even if the other device is in automatic reception mode. must be carried out. For this reason, there was a problem in that the operation at the time of transmission was extremely troublesome and the operability was poor. In particular, when the other party is busy, the same operation must be repeated at regular intervals, making the operation extremely complicated.

[Purpose of invention]

To provide a facsimile device capable of calling a destination device without taking off-hook operation of a telephone handset.

[Summary of the idea]

In order to achieve the above object, the present invention newly includes a call switch, a switch circuit for short-circuiting both ends of a telephone switch, and control means, and the control means turns on the call switch. When the dial signal is sent, the switch circuit is closed to enable the dial information input means and the dial signal output circuit of the telephone to send a dial signal, and after the dial signal is sent, the switch circuit is opened and the line changeover switch is opened. Switch from the telephone side to the facsimile device main body side, have the facsimile device main body maintain the calling state for the line, and further judge the call status of the other party's device in this state, and if the other party's device is able to communicate as a result of this judgment, the above line The switching state of the switching switch is maintained on the facsimile device main body side, and if communication is not possible with the other party's device, the line switching switch is restored to the telephone side.

As a result, when performing facsimile transmission,
By simply turning on the call switch and inputting the dial information of the other party using the dial information input means of the telephone, the line will be automatically held or disconnected depending on the call status of the other party from the time the call is made. become. This eliminates the need for the operator to perform a series of troublesome operations, such as picking up the telephone handset each time a call is made, checking the call status of the other party, and connecting or disconnecting the line depending on the result. , which can greatly improve operability.

[Example of idea]

FIG. 2 is a circuit diagram of a facsimile device according to an embodiment of the present invention, in which a telephone is housed in a housing of the main body of the facsimile device and is structurally integrated therewith. In this figure, the same parts as those in FIG. 1 are given the same reference numerals and detailed explanations will be omitted.

This device has a switch 51 for making a call, and turning on the switch 51 is controlled by a control circuit 52.
It is starting to be detected in Further, a switching circuit 53 is provided on the dial operation information introducing path to the dial signal sending circuit 32. This switching circuit 53
selects the dial operation information from the push button dial 31 and the dial operation information that is once introduced into the control circuit 52 from the push button dial 31 and then sent out from the control means 52 according to instructions from the control circuit 52. Uniform dial signal sending circuit 32
It is intended to supply Note that this switching circuit 53
is normally switched to the push button dial 31 side. Furthermore, short circuits having relay contacts rl ₄ and rl ₅ are provided between both ends of the switch switches HK1 and HK2, respectively. Each relay contact above
rl ₄ and rl ₅ open and close according to instructions from the control circuit 52.

Now, the control circuit 52 is composed of a microcomputer as in the conventional example, and in addition to various control operations for automatic reception and transmission as in the conventional example, the control circuit 52 has the function of performing the following various control operations related to new calls. is added. The control operation is as follows: (i) When the call switch 51 is turned on, it is detected, and the switching circuit 53 is first pressed to switch from the button dial 31 side to the control circuit 52 side, and the relay contact rl ₄ , , rl ₅ are closed to form a DC loop with the exchange, and relay contact rl ₁ is closed to maintain the operating DC loop in (iii), which will be described later.

(ii) After this control is completed, the operation information of the push button dial 31 is introduced and then supplied to the dial signal sending circuit 32 via the switching circuit 53, and a dial signal (dial tone) corresponding to this operation information is supplied.
control to generate the dial signal from the dial signal sending circuit 32 and send it to the subscriber line 1.

(iii) After sending the above dial signal, relay contact rl ₂ ,
RL ₃ is switched to the facsimile device main body side, and in this state, a response signal returned from the subscriber line 1 side is detected by the output of the modulation/demodulation circuit 23, and a connection is made in accordance with this response signal.

At this time, this connection control is each of the following controls.

If the response signal is a transmission permission signal, the reading unit 22 is caused to read and scan the original, and the image signal obtained by this scanning is subjected to signal processing such as band compression, and then sent to the subscriber line 1 by the modulation/demodulation circuit 23.
Control of normal transmission operations. (This function was also included in the conventional model.) If the response signal is a busy tone, relay contacts RL ₄ and RL ₅ and relay contact RL ₁ for forming a DC loop are returned to the OFF state, and the line is switched. The relay contacts RL ₂ and RL ₃ are returned to the telephone side, and then a control operation for a recall operation is performed.

In this control operation, each time a busy call is detected, a certain period of time is counted, and after this time measurement is finished, the above-mentioned call control operation is performed. The above re-calling is repeated until the intermediate number reaches a predetermined number. Further, the fact that the call is being called again is notified using, for example, a light emitting display or an audio display. Note that the dial number information in each of the recall operations described above is sent by reading information stored in the memory within the control circuit 52.

With such a configuration, when the switch 51 for making a call is turned on, the control circuit 52 detects this fact, and the control circuit 52 switches the switching circuit 53 to the control circuit 52 side, and the relay contact rl _Four ,
rl ₅ and relay contact rl ₁ are turned on to form a DC loop with the exchange. When the push button dial 31 is operated in this state, the operation information is temporarily stored in the control circuit 52 and then read out and guided to the dial signal sending circuit 32. As a result, the dial signal sending circuit 32 transmits the operation information to the dial signal sending circuit 32. A corresponding dialing signal is generated and sent to the subscriber line 1. When the transmission of the dial signal is completed, the line switching relay contacts rl ₂ and rl ₃ are switched to the main body of the facsimile apparatus.

When the transmission of the dial signal establishes a connection with the other party's device, and the other party's device returns a signal indicating permission for transmission in response to this call, the control circuit 5
2 detects this and causes the reading section 22 to start reading scanning. As a result, the reading section 22 performs reading scanning of the original, and the image signal obtained thereby is subjected to band compression in the control circuit 52, and then sent to the modulation/demodulation circuit 52.
3 and sent to the subscriber side 1. In other words, a normal image signal transmission operation is performed.

On the other hand, a busy tone is returned from the exchange because the other party's device is busy, and when this is recognized by the control circuit 52, a return signal is issued from the control circuit 52, and as a result, relay contacts RL ₄ and RL ₅ and the DC loop are maintained. The relay contacts rl ₁ for the telephone return to their respective states and the DC loop with the exchange is broken, and at the same time, the relay contacts rl ₂ and rl ₃ switch to the telephone side and return to the standby state. In this state, the control circuit 52 operates its own recall timer and starts counting time. When a certain period of time has elapsed after the start of this time measurement, the control circuit 52 performs a recall operation. In other words, the switching circuit 53 is switched and each relay contact rl ₁ , rl ₄ , rl ₅ is turned on to close the DC loop, and then the dial operation information stored at the time of the first call is transferred to the control circuit. 52 and supplied to the dial signal sending circuit 32, from which the dial signal is sent. Thereafter, a response signal from the partner device is monitored, and if this signal is a transmission permission signal, an image signal is transmitted. On the other hand, if the busy tone is returned again, the device returns to the standby state again in the same way as the first call, and a time counting operation is performed to repeat the re-call operation.

When a predetermined number of recall operations are performed and this is detected by comparison with information previously stored in the control circuit 52, the device returns to the standby state, and from then on, the device returns to the standby state. The standby state is maintained until the switch 51 is turned on.

In this embodiment, the calling switch 5
1 and dialing, the series of operations from calling to sending image signals will be performed automatically without having to take the handset off the hook, check the status of the communication partner, disconnect the line, etc. Therefore, facsimile transmission can be performed extremely easily. Therefore, operability can be improved. In addition, in this embodiment, if the other party's device is busy, a timer for re-calling is activated and the re-calling is performed after a certain period of time has elapsed. Thereafter, there is no need to monitor the operation of the device, and as a result, transmission can be performed simply by turning on the call switch 51, which greatly reduces operator intervention time and labor. It can be reduced. Furthermore, since the automatic calling operation described above is controlled by adding a slight function to the control means conventionally provided in the main body of the facsimile apparatus, there is an advantage that the structure can be relatively simple.

Note that the present invention is not limited to the above embodiments. For example, in the above embodiment, the number of busy calls is counted and the recall is terminated when a predetermined number is reached, but the recall may be continued until the operator performs an operation to cancel the call. . In addition, the control procedures in the control means, the configurations of each relay contact, switching circuit, switch, etc. can be modified in various ways without departing from the gist of the present invention.

[Effect of idea]

As described in detail above, the present invention newly includes a call switch, a switch circuit that short-circuits both ends of the telephone's switch, and control means, and the control means turns on the call switch. At this time, the switch circuit is closed to enable the dial information input means and the dial signal output circuit of the telephone to send a dial signal, and after the dial signal is transmitted, the switch circuit is opened and the line changeover switch is switched to the telephone side. The main unit of the facsimile machine maintains the calling state for the line, and in this state, the call status of the other party's device is determined. If the other party's device is able to communicate as a result of this determination, the line switching switch is switched. This switching state is maintained on the main body of the facsimile device, and if communication is not possible with the other party's device, the line changeover switch is restored to the telephone side.

Therefore, according to the present invention, it is possible to provide a facsimile device that can make a call to the other party's device without having to take off-hook operations on the handset and that can be implemented with a simple configuration.

[Brief explanation of the drawing]

FIG. 1 is a circuit diagram showing the structure of a conventional facsimile device, and FIG. 2 is a circuit diagram showing the structure of a facsimile device according to an embodiment of the present invention. 1...Subscriber line, 51...Switch for calling,
52...Control circuit, 53...Switching circuit, rl ₁ ...
Relay contacts for holding the DC loop, _RL2 , _RL3 ...Relay contacts for line switching, _RL4 , _RL5 ...Relay contacts for closing the DC loop.

Claims (1)

[Scope of utility model registration request] The telephone line is connected to a facsimile device, a dial information input means, a dial signal output circuit that generates a dial signal based on the dial operation information from the dial information input means, and a telephone that has a telephone switch. The facsimile device is selectively connected via a switching line switching switch, and includes a calling switch, a switch circuit for short-circuiting both ends of the telephone switch, and control means, the control means connecting the calling switch to the switching circuit. When turned on, the switch circuit is closed to enable the dial information input means and the dial signal output circuit to send a dial signal, and after the dial signal is sent, the switch circuit is opened,
The line changeover switch is switched to the facsimile device main body side, and the facsimile device main body maintains the calling state for the line.Furthermore, in this state, the call status of the other party's device is determined, and as a result of this determination, if the other party's device is able to communicate, the above-mentioned The switching state of the line switching switch is maintained on the facsimile machine main body,
A facsimile apparatus characterized in that, if the other party's device is unable to communicate, the line changeover switch is restored to the telephone side.