JPH088635B2 - Image communication system - Google Patents

Description

The present invention relates to an image communication system such as a facsimile machine.

[Prior Art] In the conventional facsimile machine, one facsimile machine is connected to one line. In this case, in many cases, the image information cannot be transmitted when the image data is transmitted to the facsimile machine having a high operating rate. That is, since the probability that a facsimile machine with a high operating rate is busy is high,
I can't communicate. If you want to send image information urgently,
The operator on the calling side repeats calling many times, so that there is a drawback that the time cannot be used effectively.

Further, in the above case, the calling operator checks the telephone number of another facsimile machine installed near the operating facsimile machine and sends it to it. But,
In this case, there is a problem that the work of checking other telephone numbers is complicated.

For example, there is a certain section (A section), and the inside of this A section is
10 lessons (a0 lesson, a1 lesson, a2 lesson, a3 lesson, a4 lesson, a5 lesson, a6 lesson)
Section, a7 section, a8 section, a9 section). It is also assumed that one facsimile machine is installed in each section.

In this case, when transmitting an image to a section of the section A, the operator checks the telephone number of the facsimile machine existing in the section to be transmitted, and if the facsimile machine is in operation, exists in another section. It becomes necessary to look up the telephone number of the facsimile machine that operates. In this case, it is necessary to check at least two or more telephone numbers, and if the second facsimile device is in operation, it is necessary to check three or more telephone numbers. There is a problem that is complicated.

On the other hand, in the above case, there is already known a method on the receiving side, when a certain facsimile machine is in operation, automatically selecting a facsimile machine related to the facsimile machine which is not in operation. In the method, 1
There is a problem that the calling side needs to register a plurality of telephone numbers for one destination, and the work of registering the plurality of telephone numbers is complicated.

[Object of the Invention] An object of the present invention is to provide an image communication system capable of efficiently operating each terminal when a plurality of image communication terminals are provided on the receiving side. A first detecting means for detecting an incoming call from the communication line; a connecting means for selectively connecting a plurality of image communication terminals to the communication line; and receiving designation information for designating the image communication terminals from the other party. Receiving means; second detecting means for detecting whether or not the image communication terminal designated by the designation information received by the receiving means is usable; and the image communication terminal for receiving an incoming call from the communication line. This is information for connecting to a communication line, and when the image communication terminal designated by the designation information received by the receiving means is unusable, the image communication terminal designated by the designation information Instead, registration means for registering information indicating an image communication terminal to be connected to the communication line; detection of an incoming call by the first detection means, designation information received by the reception means, and detection by the second detection means. And control means for controlling the connection means in accordance with the registration information, wherein the control means receives the designation information at the time of an incoming call from the communication line, and When the image communication terminal designated by the designation information is usable, the image communication terminal designated by the designation information is controlled to be connected to the communication line, while the receiving means receives the designation information. If the image communication terminal designated by the designation information is unusable, the image communication terminal different from the image communication terminal designated by the designation information and usable And selected in accordance with the registration information, and an object thereof is to provide an image communication system, characterized in that the selected image communication terminal and controls so as to connect to said communication line.

Embodiment of the Invention FIG. 1 is a block diagram showing an embodiment of the present invention.

In the above embodiment, 10 telephone lines are provided in the section A, and the same predetermined telephone number is the representative telephone number of the 10 lines.

The embodiment shown in FIG. 1 includes an NCU and a line distribution device 2, a hybrid circuit 4, a V21 modulator 6, a V21 demodulator 8, a receiver memory circuit 10, a receiver verification circuit 12, and an operation unit. 14, control circuit 20, and facsimile machine
f0 and f1 to f9.

The NCU and the line distribution device 2 are NCUs (network control devices)
And a circuit for allocating lines, the NCU controls the connection of the telephone switching network, switches to a data communication path, and holds a loop. In addition, the above-mentioned line distribution circuit has 10 lines (l0,1, l2, l3, l4, l5, l) under the control of the control circuit 20.
6l7, l8, l9) one line
This is a circuit to be connected to one of the facsimile machines f0 to f9.

The control circuit 20 is a circuit for controlling the connection between the lines l0 to l9 (that is, a transmitter (not shown)) and a facsimile device corresponding to a receiver or a reception group (hereinafter, simply referred to as a "receiver").

The hybrid circuit 4 is a circuit for separating a transmission system signal and a reception system signal. The V21 modulator 6 is a CCITT recommendation V2.
This is a circuit that performs modulation based on 1. The V21 demodulator 8 is a demodulator that performs demodulation based on CCITT Recommendation V21.

The receiver storage circuit 10 includes each receiver designated by the transmitter,
This is a circuit that stores the data in association with any of the facsimile devices f0 to f9, and is a battery-backed memory. In other words, the receiver storage circuit 10 receives the incoming call from the transmitter, and the receiver designated by the transmitter (for example, 0 facsimile, 1 facsimile, 2 facsimiles, ..., 9 facsimiles). Outputs which of the facsimile machines f0 to f9 corresponds to.

The receiver matching circuit 12 compares the receiver name sent from the control circuit 20 with the receiver data stored in the receiver storage circuit 10, and outputs a match signal when they match. Is.

The operation unit 14 has an alphabet key, a numeric key, a * key, a # key, a start key, and the like.

In addition, the facsimile machines f0, f1, ………………, f9
They are installed in sections a1, a2, a3, ………………, a9, respectively.

 Next, the operation of the above embodiment will be described.

FIG. 2 is a flow chart showing the operation of the above embodiment.

First, it is determined whether the mode for registering the recipient has been selected (S52). If the registration mode is selected, registration is executed (S54). That is,
To register in the recipient memory circuit 10, the operation unit 14
Select the registration mode by pressing the "F" and "1" keys of and press the facsimile number you want to register with the number keys, etc.
Press the "*" key, and then the key for the recipient name you want to register.
Finally, press the "F" key.

If the registration mode is not selected, the system waits for an incoming call (S56). If there is an incoming call, it is determined whether or not the control circuit 20 is in use (S58), and if the control circuit 20 is not in use, the pre-procedure is executed (S60).

This pre-procedure is an operation of recognizing the receiver designated by the transmitter by the NSS (non-standard signal) sent from the transmitter. Then, the matching circuit 12 determines whether or not the recipient is registered (S62).

If the receiver designated by the transmitter is registered in the receiver memory circuit 10, the line used by the transmitter is set to the facsimile device (f0 to f9) corresponding to the receiver.
(Either one of them) (S66).

That is, for example, when the transmitter specifies "facsimile 2" as the receiver, the data "facsimile 2" and the compare pulse are sent to the receiver verification circuit 12. In this case, since "facsimile 2" is registered, the number "f2" of the facsimile device corresponding to the recipient is sent to the control circuit 20, and the facsimile device f2 is selected based on this signal. The line used by the transmitter at this time is connected to the facsimile device f2.

When the NCU and the line distribution device 2 detect an incoming call, a pulse is sent to the hybrid circuit 4, and the hybrid circuit 4 sends the signal of the receiver included in NSS to the control circuit 20 via the V21 demodulator 8.

Further, various information is sent from the control circuit 20 to each of the facsimile devices f0 to f9, and in this information, information indicating which facsimile device is selected, NSS / ISI /
Signals such as DCS are included.

Then, as described above, when the facsimile f2 is selected, the information of the line used at that time is sent to the device 2 as the line connection information. At the same time, when a line switching command is sent from the control device 20 to the device 2, the line currently used and the facsimile device f2 are connected.

On the other hand, when the receiver designated by the transmitter is not registered in the receiver memory circuit 10, the line used by the transmitter is forcibly connected to the facsimile device f1 (S6
Four). This is true even if no recipient is specified,
This is so that it can be received.

Then, image transmission is performed (S68), and the post-procedure is executed (S70).

FIG. 3 is a flowchart showing S66 in more detail among the operations shown in FIG.

In S66 of FIG. 2, when the transmitter designates section a2 as a recipient and the facsimile device f2 corresponding to the section a2 cannot receive, the facsimile device located closest to the facsimile device f2. Is connected to the line. If the substitute facsimile machine cannot receive the data, the facsimile machines installed at the next closest position are sequentially connected in order from the closer one to the farther one.

In FIG. 3, "order for section a0" means the order of the facsimile machines other than the facsimile machine f0 installed in the section a0 and arranged in the order close to the facsimile machine f0. The same applies to "a1 lesson order", "a2 lesson order", ..., "a9 lesson order".

This solves the problem that a certain facsimile machine cannot be transmitted because it is busy.

In addition, the above-mentioned "unable to receive" means that the facsimile apparatus cannot receive, and means that the facsimile apparatus is in operation, the recording paper is out, or there is a failure.

The facsimile devices f0 to f9 can make a call at any time if they have not been received.

As described above, the control circuit from the time when the line is connected to the line distribution device 2 to the middle of the pre-procedure (in G3, the procedure until receiving NSS / TSI / DCS group signals, etc.)
20. After that, the facsimile machine corresponding to the receiver designated by the transmitter executes (image output).

Further, the facsimile devices f0 to f9 can also be executed from the beginning of the above-described pre-procedure (execution without the intervention of the control device 20).
Whether the control procedure is performed from the middle of the pre-procedure
Informs each of the facsimile devices f0 to f9. For example, if this information is “0”, it may indicate that the pre-procedure has been executed from the beginning, and if it is “1”, it may indicate that the pre-procedure has been executed from the middle.

In the above embodiment, one section (A section) and ten sections have been described, but one company and a plurality of sections may be substituted.

Further, in the above embodiment, the facsimile has been described as an example, but the present invention can be applied to other image communication systems as long as the image signals can be exchanged, such as image communication using a personal computer. .

[Advantage of the Invention] According to the present invention, when the designation information is received at the time of the incoming call from the communication circuit and the image communication terminal designated by the designation information is usable, the image communication terminal designated by the designation information If the image communication terminal specified by the specified information is unusable even when the specified information is received, the image communication terminal specified by the specified information depends on the registration information. Since different image communication terminals that can be used are connected to the communication line, it is possible to efficiently operate each terminal when a plurality of image communication terminals are provided on the receiving side. Play.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention. FIG. 2 is a flow chart showing the operation of the above embodiment. FIG. 3 is a flowchart showing S66 in more detail among the operations shown in FIG. 2 ... NCU and line distribution device, 10 ... Recipient storage circuit, 12 ... Recipient verification circuit, 14 ... Operation section,
20 ... Control circuit, l0-l9 ... Line, f0-f9 ... Facsimile device.

Claims (1)

[Claims] 1. A first detecting means for detecting an incoming call from a communication line; a connecting means for selectively connecting a plurality of image communication terminals to the communication line; Second receiving means for detecting whether or not the image communication terminal designated by the designation information received by the receiving means is usable; and image communication for an incoming call from the communication line. Information for connecting the terminal to the communication line, and when the image communication terminal designated by the designation information received by the receiving means is unusable, instead of the image communication terminal designated by the designation information, Registration means for registering information indicating an image communication terminal to be connected to the communication line; detection of an incoming call by the first detection means, designation information received by the reception means, and second detection And a control means for controlling the connection means according to the detection by the stage and the registration information, wherein the control means receives the designation information when the receiving means receives an incoming call from the communication line, When the image communication terminal designated by the designation information is usable, the image communication terminal designated by the designation information is controlled to be connected to the communication line, while the receiving means receives the designation information. Even if the image communication terminal designated by the designation information is not usable, the image communication terminal different from the image communication terminal designated by the designation information and usable is registered as the above. An image communication system, which is selected according to information and is controlled to connect the selected image communication terminal to the communication line.