JPH08307639A - Facsimile equipment - Google Patents

Abstract

PURPOSE: To prevent contention of redialing when dialing is conducted simultaneously by a destination facsimile equipment and this facsimile equipment. CONSTITUTION: In this facsimile equipment provided with an automatic redial function by which a telephone number having been dialed precedingly is automatically redialed after the lapse of a prescribed time from the end of preceding dialing, when the preceding dialing does not cause the line connection to a destination terminal equipment, an automatic redial control circuit 9 revises the prescribed time to be set to a timer circuit 13 and conducts redialing after the lapse of the revised prescribed time.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a facsimile apparatus having an automatic redial function for automatically redialing a previously dialed telephone number after a lapse of a certain time from the end of the last dial transmission, and particularly to a facsimile machine. The present invention relates to a facsimile device capable of surely preventing a collision at the time of redialing a call when the dial transmission of the side facsimile device and the dial transmission of the present facsimile device are simultaneously performed.

[0002]

2. Description of the Related Art In a conventional facsimile apparatus having an automatic redial function, the time from the end of the previous dial transmission to the current redial transmission (hereinafter referred to as redial time if necessary) is usually 3 minutes. (1 minute, 2 minutes, etc. depending on the model) is set. Once set, this redial time is fixed unless it is subsequently changed by the user.

[0003]

As described above, in the conventional facsimile apparatus having the automatic redial function, the redial time is fixed. When the redial time of the other facsimile machine is set to 3 minutes, which is the same as the redial time, the dial call is made at the same time not only at the first dial call but also at the redial call.

That is, when the present facsimile machine makes a dial call for facsimile communication to a specific facsimile machine of the other party, the facsimile machine of the other party also makes a dial call for facsimile communication to the facsimile machine, for example. In this case, both devices will detect a busy sound, and both devices will be in a state of waiting for automatic redialing. Then, after the lapse of 3 minutes, the two devices again perform redial transmission for calling each other. As described above, the conventional facsimile apparatus has a problem that the line connection cannot be established forever when the redial time is set to the same time and the simultaneous dialing is performed.

The present invention was devised to solve such a problem, and an object thereof is to make a redial when a dial transmission of a facsimile machine on the other side and a dial transmission of this facsimile machine are simultaneously performed. It is an object of the present invention to provide a facsimile apparatus that can reliably prevent collisions when making a call.

[0006]

A facsimile apparatus having an automatic redial function according to claim 1 of the present invention, if a previous dial transmission does not reach a line connection with a partner terminal apparatus, The configuration is provided with an automatic redial control circuit that redials after changing the fixed time from the end of the dial transmission to the redial transmission this time. Further, in the facsimile apparatus having the automatic redial function according to claim 2 of the present invention, the change time is at least a time required for one communication for line connection with respect to the preset fixed time. It is what

[0007]

The operation of the facsimile apparatus according to claim 1 will be described. The automatic redial control circuit terminates the previous dial call if the previous dial call did not reach the line connection with the terminal device on the other side (for example, when a ringing tone was detected for the dial call). From the redial call this time (eg 3 minutes) to 2
Control to change the time to 15 seconds, etc. and redial.

As a result, when the redial time of the partner terminal device is set to 3 minutes, the facsimile device of this partner terminal device is sent to the partner terminal device before the partner terminal device redials. You can redial the call from. In other words, when the other terminal device is also in the state of waiting for the redial transmission, the next redial transmission time is different, so that the collision of the redial transmission is surely avoided.

The operation of the facsimile apparatus according to the second aspect will be described. The change time is set to be at least the time required for one communication for line connection (for example, 45 seconds) or more with respect to a preset fixed time (for example, 3 minutes). That is, the redial time is reset to 2 minutes 15 seconds or 3 minutes 45 seconds. As a result, before the remote terminal device makes a redial call or after the redial call is completed, the facsimile device can redial a call to the remote terminal device and ensure reliable communication by redial call. Is possible.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing the electrical configuration of the facsimile apparatus of the present invention. The telephone line 1 is connected to a network control circuit 2 that holds and opens the line and connects with each circuit. The network control circuit 2 transmits a control signal and an image signal of a facsimile to an analog signal and a digital signal. A modulation / demodulation circuit 3 for modulating / demodulating a signal is bidirectionally connected. Further, the modulation / demodulation circuit 3 includes a facsimile image processing unit 4
Are bidirectionally connected, and the facsimile image processing unit 4
The output of the image reading unit 5 that reads the document is guided to.

The output of the facsimile image processing unit 4 is guided to an image print output unit 6 for printing out the received image data on a recording paper or the like, and the image data read by the image reading unit 5 is also sent. Alternatively, it is bidirectionally connected to the image data storage unit 7 that stores the image data transmitted from the facsimile machine on the other side. The facsimile image processing unit 4 band-compresses the digital image data read by the image reading unit 5 by, for example, the MH coding system or the MR coding system, stores the band-compressed image data in the image data storage unit 7, and the modulation / demodulation circuit. The band-compressed image data received via 3 is expanded, stored in the image data storage unit 7, and printed out from the image print output unit 6.

The network control circuit 2 is bidirectionally connected to a facsimile control circuit 8 which controls the operation of the entire facsimile apparatus. In the facsimile control circuit 8,
Operation input unit 1 for sending and receiving facsimiles and various settings
4 is guided and is bidirectionally connected to the modulation / demodulation circuit 3, the facsimile image processing unit 4, and the image data storage unit 7. The facsimile control circuit 8 is also bidirectionally connected to the automatic redial control circuit 9.

The automatic redial control circuit 9 controls the timing of redial transmission. The timer circuit 13 for setting the redial time and the dial number storage section 12 for storing the dial number dialed last are bidirectional. It is connected to the. The output of the automatic redial control circuit 9 is directed to the dial transmission circuit 10, and the output of the dial transmission circuit 10 is guided to the network control circuit 2. Further, the output of the in-call sound detection circuit 11 for detecting the in-call sound is guided to the automatic redial control circuit 9.
The output of the network control circuit 2 is guided to the talking sound detection circuit 11.

In the above configuration, the facsimile control circuit 8 and the automatic redial control circuit 9 are configured to include software operating on a computer. next,
The operation of the facsimile apparatus having the above configuration will be described with reference to the flowchart shown in FIG. As an initial state, a predetermined time (for example, 3 minutes) is preset as the redial time in the timer circuit 13, and the previous dial number A is stored in the dial number storage unit 12. Yes (step S1).

In this state, when the user inputs the dial number B of an arbitrary terminal device on the other side from the operation input section 14 (step S2), the facsimile control circuit 8 detects this operation signal and causes the network control circuit 2 to operate. The telephone number is controlled to capture the telephone line 1, and the dial number B is output to the dial transmission circuit 10 via the automatic redial control circuit 9. The dial transmission circuit 10 transmits the dial signal of the dial number B to the telephone line 1 via the network control circuit 2. Further, the automatic redial control circuit 9 clears the stored contents of the dial number storage unit 12 and newly stores the dial number B (step S3).

At this time, for example, if the other terminal device happens to be in a dialing state, a telephone call tone is transmitted from the exchange (not shown) through the telephone line 1.
This call sound is detected by the call sound detection circuit 11 via the network control circuit 2, and the detection signal is input to the automatic redial control circuit 9 (step S4). On the basis of this detection signal, the automatic redial control circuit 9 determines that the other terminal device is in a call and shifts the facsimile device to the redial mode. The redial time of 3 minutes set in the circuit 13 is changed (steps S5 and S).
6).

That is, in this embodiment, the timer circuit 1
The redial time set to 3 is, for example, 3 minutes to 4
Change to 2 minutes and 15 seconds minus 5 seconds. The change time of 45 seconds is a time in which a certain margin is added to the time required for at least one communication for line connection. However, a shorter time (for example, 30 seconds) may be used,
Further, a longer time (for example, 1 minute and 30 seconds) may be used. These change times are set in advance in the automatic redial control circuit 9.

Therefore, the present facsimile machine will perform the redial transmission 2 minutes and 15 seconds after the completion of the first dial transmission (steps S7 and S8). in this way,
By changing the redial time, it is possible to avoid the collision of the devices (that is, the collision of the re-call) at the time of redialing.

For example, when the partner terminal device is a dial call to the facsimile device, the partner terminal device similarly shifts to the redial mode. At this time, if both the redial time of this facsimile device and the redial time of the other terminal device are 3 minutes, the mutual devices should detect the busy tone in the same manner when making a redial call. However, by changing the redial time as in the present invention, it is possible to surely avoid such collision of outgoing calls. That is,
When redialing is made 2 minutes and 15 seconds after the completion of the first dialing, the other terminal device is still in the state of waiting for redialing and is ready to receive the call signal from the facsimile device. Is.

If no ringing tone is received in step S4 and the line is connected in step S9, then facsimile communication is performed according to a normal facsimile communication procedure (step S10). In step S9, a predetermined number of calls (for example, 1
Even if the terminal device on the other end does not respond even after performing 0 times or the like), the operation proceeds to step S5 to shift to the redial mode.

Further, in the above-described embodiment, as shown in FIG. 2, since steps S3 to S8 are repeated, the calling terminal collides with the other terminal even when redialing. When occurs,
The redial time is changed again (that is, 2 in this embodiment).
It will be changed from 15 minutes to 45 minutes minus 1 minute and 30 seconds), but the time will not be changed when redialing again and the redialing time at the first redialing (2 minutes 15 seconds) It is also possible to maintain the above and perform redial dialing again. Or, when dialing again, reset the time again (that is, return to the conventional 3 minutes).
It is also possible to perform redial dialing again.

Further, in the above embodiment, the time until redialing is shortened, but the redialing time is changed to, for example, 3 minutes 45 seconds, which is 3 minutes 45 seconds. It is also possible to do so.

[0023]

In the facsimile apparatus of the present invention, when the last dial call does not reach the line connection with the terminal device on the other side, a certain time is required from the end of the last dial call to the redial call this time. Since the configuration is provided with an automatic redial control circuit for changing and redialing, the other party's terminal device before the other terminal device redials or after the other terminal device redials. It is possible to make a redial call from the facsimile device to the terminal device. In other words, if the other terminal device is also in the state of waiting for redial transmission, the next redial transmission time will be different, so collisions of redial transmission can be avoided and reliable communication can be performed. Is. Further, in the facsimile apparatus of the present invention, the change time is set to be at least the time required for one communication for line connection with respect to the preset fixed time. That is, by resetting the redial time from 3 minutes to, for example, 2 minutes 15 seconds or 3 minutes 45 seconds,
Before the other party's terminal device makes a redial call, or after the redial call has been completed, this facsimile machine can make a redial call to the other party's terminal device. The communication is avoided and reliable communication can be performed.

[Brief description of drawings]

FIG. 1 is a block diagram showing an electrical configuration of a facsimile apparatus of the present invention.

FIG. 2 is a flowchart illustrating the operation of the facsimile apparatus of the present invention.

[Explanation of symbols]

 1 Telephone Line 2 Network Control Circuit 8 Facsimile Control Circuit 9 Automatic Redial Control Circuit 10 Dial Transmitting Circuit 11 Call Sound Detection Circuit 12 Dial Storage 13 Timer Circuit

Claims (2)

[Claims] 1. A facsimile apparatus having an automatic redialing function for automatically redialing a telephone number dialed last time after a lapse of a predetermined time from the end of the previous dialing call, in which the last dialing call is made with a partner terminal device. A facsimile machine comprising an automatic redial control circuit for changing the fixed time and redialing when the line is not connected. 2. A facsimile apparatus, wherein the change time is at least a time required for one communication for line connection with respect to the preset fixed time.