JPH01177759A - Communication equipment - Google Patents

Abstract

PURPOSE:To start a holding-action and to improve the operability of the title equipment by detecting the prescribed state of hooking of a telephone set and holding the connection of a line in case the specific hooking is executed to transmit a holding-sound to a telephone line. CONSTITUTION:To a line that leads to an external telephone set, a hooking detection circuit 23 is connected. To perform a holding-action and to enable the circuit 23 to operate while the line is being held, a holding switching circuit 24 is connected to lines L3, L4. With this constitution, by the hooking of a telephone set, the connection of the line can be held and a holding-sound can be transmitted to the opposite office. The releasing of the holding can be enabled by hooking the telephone set again. Therefore, even if the telephone set and the facsimile equipment are located at distant places, an operator does not need to go to the facsimile equipment side, hence the operability is improved.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a communication device, and particularly to a communication device in which an image communication device and a telephone are connected to a terminal of the same telephone line.

[Prior Art] Conventionally, a configuration has been known in which a facsimile machine and at least one telephone (slave telephone) are connected to the same line, and the line control unit of the facsimile machine controls the line connection of each terminal. .

In this type of terminal system, line control is performed by a line control section of a facsimile machine.

This line control also includes the operation of suspending line connection. In a conventional system of this type, when a hold operation is to be performed when changing callers, a hold switch provided on the operation panel of the facsimile machine is operated. This connects the line to the facsimile machine's modem, which sends prerecorded hold music (such as music) to the line.

[Problems to be Solved by the Invention] On the other hand, when using the above-mentioned system, there is a problem that if the facsimile and telephone are installed at separate locations, the above-mentioned hold operation cannot be performed without moving the facsimile to the facsimile machine. there were.

[Means for Solving the Problems] In order to solve the above problems, in the present invention, in a communication device in which an image communication device and a telephone are connected to a terminal of the same telephone line, a predetermined hooking state of the telephone is provided. The present invention employs a configuration that includes a means for detecting a hook, and a means for holding a line connection and transmitting a hold tone to a telephone line when a predetermined hooking is performed by the detecting means.

[Function] According to the above configuration, even if the telephone and the image communication device are installed at separate positions, the holding operation can be started by performing a predetermined hooking operation on the telephone side.

[Example 1] Hereinafter, the present invention will be described in detail based on an example shown in the drawings.

FIG. 1 shows the structure of a communication system comprising a facsimile machine and a telephone employing the present invention.

In the figure, the reference numeral 1 indicates a control unit composed of a microprocessor, etc., which controls each part of the device shown below and performs image communication.The communication unit 2 modulates and demodulates procedure signals and image signals. It also performs line control and consists of a modem, NCU, etc.

The telephone line 3 is connected to the device via the communication section 2. A plurality of telephones 16 and 17 can be connected to the communication section 2.

Telephones 16 and 17 are slave telephones separate from the facsimile machine, and are placed at other installation positions. The connection structure between the telephone and the communication unit 2 will be described later.

Recording and reading of the original is performed by a recording section 4 and a reading section 5. The recording section 4 is composed of a thermal printer, etc., and the reading section 5 is composed of a CCD line sensor, a document conveyance system, etc.

Communication operations are controlled via the operation panel 6.

The operation panel 6 has a keyboard 8 consisting of a numeric keypad for inputting a telephone number, various function keys, etc., a one-touch key 9 for making a call to a partner station by operating a single key, and a telephone number.

It has a display 7 used for displaying time and the like.

Three memories indicated by symbols 1O to 12 are connected to the control unit 1. The ROM 10 is used to store a control program to be described later. EEFROMll stores telephone numbers stored in correspondence with one-touch keys. RAM12
is used as an image memory and a work area for the control unit l. Image data to be sent and received is encoded and stored in RAM.
'12 is stored.

FIG. 2 shows the connection structure for the communication section 2 and the telephones 16 and 17 in FIG.
PPI (programmable input/output capo) for controlling U2a
)2c.

As shown, the telephone line 3 in FIG. 1 has two lines Ll,
L2, and this line 1, 1 . L2 is connected to the CML relay 21 of the NCU 2a.

The CML relay 21 is connected to lines L3 and L on the telephone side at the top of the diagram.
It is used to connect a line to either line L5 or L6 on the facsimile side.

CML relay 21 is driven via relay drive circuit 26.

Furthermore, a modem 2b is connected to the lines L5 and L6 via a modem interface circuit 22. The modem interface circuit 22 includes a coil 221 for forming a DC loop, and a hybrid transformer 222 that separates a transmission signal output from the modem 2b and a reception signal input from the line.

The modem 2b is connected to the bus of the control unit 1, and inputs and outputs modulated and demodulated signals to and from this bus.

On the other hand, terminals T1 and T2 are connected to the lines L3 and L4, and the telephones 16 and 17 are connected in parallel to these terminals.

A hooking detection circuit 23 is connected to the line leading to the external telephone 17. In addition, in order to perform a hold operation,
A hold switching circuit 24 is connected to the lines L3 and L4 to enable the hooking detection circuit 23 to operate while the line is on hold.

Figures 3 (A) and (B) show the hooking detection circuit 2 in Figure 2.
The structure of 3 is shown. As shown in FIG. 3(A), the hooking detection circuit 23 has a detection circuit 230 connected by a varistor. The detection circuit 230 is configured as shown in FIG. 3(B).

In FIG. 3 CB), reference numeral H3 is a telephone hook switch, and one end of this hook switch H3 is pulled up to the power supply voltage (+SV) via a resistor. The terminal voltage of the hook switch H5 is input to one input terminal of an operational amplifier 232 via a chattering prevention filter 231. A reference voltage obtained by dividing the power supply voltage by a resistor 233 is input to the input terminal of the operational amplifier 232 .

The operational amplifier 232 compares the potential of the hook switch H3 with a reference voltage and outputs the error voltage to PPI2c.

If either of the telephones 16 or 17 performs a switching operation, the terminal voltage of the hook switch H3 changes as shown in FIG.
transmitted to c. Therefore, the control unit l can recognize the hooking state via PPI 2 C.

FIG. 4 shows the configuration of the hold switching circuit 24.

As shown in the figure, the hold switching circuit 24 includes a relay 241 that controls the connection between the lines L3 and L4 and the telephone set. While on hold, relay 241 is switched to the M side, and the phone is switched to the L line.
3. Cut off from L4. Further, as a result, a power supply voltage is supplied to the series circuit of the telephone and the hooking detection circuit 23 via the resistor 243 (power supply side) and the LED 242 (installation side). Relay 241 is driven via relay drive circuit 25.

This switching allows the hooking detection circuit 2 to
A current flows through 3, making it possible to detect hooking.

While the call is on hold, the LED 242 lights up to indicate that the call is on hold. The LED 242 is placed on the operation panel of the facsimile machine or telephone.

Next, the operation of the above configuration will be explained.

FIG. 6 is a flowchart showing the control procedure of the control unit 1. The procedure shown in FIG. 6 is stored in the ROM 10.

When the device is powered on, the control unit 1 first determines whether the telephone 17 is off-hook in step S1. This determination is made by the off-hook detection circuit 23. If step S1 is affirmed, the process moves to step S8, and if negative, the process moves to step S2.

In step S2, it is determined whether a calling signal is input from the line. This determination is made by a calling signal detection circuit included in the modem 2b. At this time, the CML relay 21 is switched to the lines L5 and L6. If there is a call from the line, a known receiving operation is performed in step S3.

If step S2 is negative, it is determined in step S4 whether the start key on the operation panel 6 has been pressed. If step S4 is negative, the process returns to step Sl, and if positive, it is determined in step S5 whether or not a document is loaded in the reading section 5.

If a document is loaded, the document loaded in the reading unit 5 is read in step S7 and recorded in the recording unit 4, a so-called copying process is performed.If there is no document, the process is executed in step S6.
Then, the recording paper in the recording section 4 is conveyed a predetermined distance and a cutting process is performed to cut the leading edge of the recording paper.

On the other hand, if step 31 is affirmed, step S
8, it is determined via the hooking detection circuit 23 whether a predetermined hooking (for example, connecting a hook switch for a short time) has been performed. If step S8 is negative, the process moves to step S9, and if it is affirmative, the process moves to step S13.

In step S9, it is determined whether the start key has been pressed. If step S9 is negative, step S1
If the answer is affirmative, the process moves to step StO.

In step S10, the presence or absence of a document in the reading section 5 is determined in the same manner as described above.

If there is no document, reception processing is performed in step 511, and if there is a document, the document is read and transmitted in step 512.

On the other hand, if step S8 is affirmative, step 31
3, the hold operation is started. The process of step S13 is shown in FIG.

In step 5131 of FIG. 7, the CML relay 21 is connected to the lines L5 and L6.

Subsequently, in step 3132, the modem 2b is
Set to F mode, that is, mode for transmitting tone signals.

Furthermore, in step 5133, a hold tone such as a predetermined melody is transmitted from the modem 2b. This hold music data is stored in the ROM 10 or the like and transmitted via the modem 2b.

Simultaneously with the start of transmission of the hold tone, the hold switching circuit 24 connects the telephone and the hooking detection circuit 23 to the power supply voltage. As a result, the LED 242 of the hold switching circuit 24 lights up,
It will show that it is on hold.

In step 514 of FIG.
It is determined whether hooking has been performed again. If hooking is performed again, this is recognized as a command to cancel suspension, and the process moves to step 316, but if hooking is not performed, the process moves to step 515.

In step 515, by observing the waveform obtained by the hooking detection circuit 23, it is determined whether there is an on-footer state, that is, whether the call has been canceled. If step 315 is negative, the process returns to step 514; if the result is affirmative, the process moves to step 516.

In step 316, the hold tone is stopped, the process moves to step S17, a hold cancellation process is performed, and the process returns to step Sl.

The process of step 317 is shown in FIG. In step 3171 of FIG. 8, the CML relay 21 is turned off, that is, connected to the lines L3 and L4. In step 5172, modem 2b is placed in reception mode and transmission of the hold tone is stopped.

This makes it possible to make calls using the telephone 16.17.
The call is carried out in a loop of steps si, ss, and S9.

According to the above configuration, even if the telephones 16 or 17 and the facsimile machine are installed at separate locations, the telephones 16 and 17 can be easily moved to the facsimile machine without having to move the telephones 16 or 17 to the facsimile machine.
By hooking, you can put the line connection on hold and send the hold tone to the other station. The hold can be canceled by hooking the phone again. Therefore, there is an excellent effect that the operability of the device can be significantly improved. Further, according to this configuration, there is no need to provide a hold switch on the operation panel of the facsimile machine, so there is an excellent effect that the configuration of the device can be made simple and inexpensive.

[Effects of the Invention] As is clear from the above, according to the present invention, in a communication device in which an image communication device and a telephone are connected to a terminal of the same telephone line, means for detecting a predetermined hooking state of the telephone; , a configuration is adopted in which, when a predetermined hooking is performed by this detection means, a means is provided to put the line connection on hold and send a hold tone to the telephone line, so that the telephone and the image communication device can be placed at a remote location. Even if the telephone is installed, a hold operation can be started by performing a predetermined hooking operation on the telephone side, and the operability of the device can be improved. Furthermore, the conventional hold switch can be omitted, and the apparatus has the advantage of being simple and inexpensive.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a communication system consisting of a facsimile machine and a telephone that employ the present invention, FIG. 2 is a block diagram of the communication section surrounding the communication section in FIG. 1, and FIGS. 4 is a circuit diagram of the hold switching circuit of FIG. 2, FIG. 5 is a waveform diagram of the hooking signal, and FIGS. 6 to 8 are control procedures of the control unit of FIG. 1. It is a flowchart figure which showed. l...Control unit 2...Communication unit 3...Telephone line 4...Recording unit 5...Reading unit
6...Operation panel 7...Display unit
8...Keyboard 9...One-touch key 10.
...ROM11...EEPROM12...R
AM16.17...Telephone 23...Hooking detection circuit 24...Holding switching circuit 25.26...Relay drive circuit FU・SOMO）B, *1 Bikku Haruka H's 3rd diagram [ “Fu, Tsuki) Buoy 12 The blade of the sea bream is large Figure 5 Figure 4

Claims (1)

[Scope of Claims] 1) In a communication device in which an image communication device and a telephone are connected to a terminal of the same telephone line, there is provided means for detecting a predetermined hooking state of the telephone, and a means for detecting a predetermined hooking state by the detecting means. 1. A communication device characterized by comprising means for holding a line connection and transmitting a hold tone to a telephone line when a call is made. 2) The communication device according to claim 1, wherein the communication device suspends the holding operation if a predetermined hooking is detected during the holding operation.