JP2648304B2 - Facsimile machine - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a facsimile apparatus provided with a telephone.

[Prior Art] The communication procedure in a conventional facsimile machine is generally CC
It is performed according to the protocol of Recommendation T.30 by ITT.
For example, in an automatic receiving facsimile machine,
To send a certain image from the calling facsimile machine, place the paper on which the image is drawn on the transmitting platen of the calling facsimile machine and dial the telephone number of the called facsimile machine. To make a line connection with the called party. Next, for example, an announcement message “This is xxx. Please send me.” Is received from the automatic facsimile machine of the called side, or the called side by the above T.30 protocol is used. After receiving the CED signal (frequency 2100 Hz ± 15 Hz, time from 2.6 seconds to 4 seconds), the start button of the facsimile machine on the calling side is pressed, and the operation shifts to transmission of the image.

[Problems to be Solved by the Invention] However, in the facsimile apparatus of the automatic reception system described above, even if the calling side wants to make a telephone call instead of transmitting an image by the facsimile apparatus, the called side of the called side can receive the image. There is a problem that the facsimile machine shifts to the automatic reception operation of the facsimile machine.

SUMMARY OF THE INVENTION The object of the present invention is to solve the above-mentioned problems, and in a case where the calling side does not transmit an image by the facsimile apparatus but wants to make a telephone call, the called side does not shift to the automatic reception operation of the facsimile apparatus, and the ordinary An object of the present invention is to provide a facsimile apparatus capable of performing a telephone call operation.

[Means for Solving the Problems] A facsimile apparatus according to the present invention is a facsimile apparatus equipped with a telephone which detects a CNG signal transmitted from a calling facsimile apparatus via a communication line. Means, a ring tone output means for outputting a ring tone for making a call, a hook detection means for detecting whether or not the telephone is off-hook, and a predetermined voice message to the calling side via the communication line. Voice connection means for transmitting to the facsimile apparatus, and after connecting the line to the calling facsimile apparatus, use the voice output means to transmit a voice message for waiting for a while and to output a CNG signal for a predetermined first period. Is monitored, and if a CNG signal is detected during the first period, facsimile communication is started while a CNG signal is detected. In this case, a ringing tone is output using the ringing tone output means and the hook detecting means is used to monitor whether or not the telephone is off-hook. If an off-hook of the telephone is detected, the communication is performed. While the line is connected to the telephone, if the off-hook of the telephone is not detected after a predetermined second period after the first period, the voice output means outputs the voice message indicating that the user is out of the telephone. And control means for performing control so as to output the data by using the control unit.

[Operation] With the above configuration, the control unit is configured to:
After the line is connected to the calling facsimile machine, the voice output means is used to send a voice message for waiting for a while, and the CNG signal is monitored for a predetermined first period. If a CNG signal is detected, facsimile communication is started.If no CNG signal is detected, a ringing tone is output using the ringing tone output means and the telephone is off-hook using the hook detecting means. To monitor whether
When the off-hook of the telephone is detected, the communication line is connected to the telephone. On the other hand, when the off-hook of the telephone is not detected after a predetermined second period after the first period. Controls to output a voice message indicating that the user is out of the office using the voice output means.

[Embodiment] FIG. 2 shows an automatic reception type facsimile apparatus according to an embodiment of the present invention. This facsimile apparatus converts an image into a facsimile image signal, or converts a facsimile image signal into an image. A well-known facsimile machine that does not include a modem that outputs a copy (hereinafter referred to as FAX
That. 1), a telephone 2, a voice synthesis recording / reproducing unit 3 for recording and reproducing voices of two sentences, a CNG signal detection circuit 15,
Equipped with each circuit such as the bell drive circuit 29, when the automatic reception does not detect the CNG signal from the calling side (frequency 1100Hz, transmission of 4 seconds 0.5 seconds), it is possible to perform normal telephone call operation Features.

In FIG. 2, connection terminals 11a,
11b is connected to each common side of the telephone / FAX changeover switches 12a and 12b, and the telephone side of the changeover switches 12a and 12b is connected in parallel with the polarity inversion detection circuit 14 and a detection terminal of the CNG signal detection circuit 15 The output terminal of the buffer circuit 45 of the voice synthesis recording / reproducing unit 3 and the load / telephone changeover switch 16a,
It is connected in series with each common side of 16b. Changeover switch 12a, 1
The fax side of 2b is the detection terminal of the fax line switching detection circuit 13 and the FA.
Connected in series with X1. Here, when the polarity reversal detection circuit 14 detects the reversal of the polarity of the telephone line, the polarity reversal detection circuit 14 outputs a detection signal to a central processing unit (hereinafter referred to as a CPU) 2 of the speech synthesis recording / reproducing unit 3.
Output to 0. Further, the CNG signal detection circuit 15 is configured by, for example, a known zero-crossing counting type detection circuit, and outputs a detection signal to the CPU 20 when detecting the above-described CNG signal transmitted from the calling-side facsimile apparatus, Further, the fax line disconnection detection circuit 13 outputs a detection signal to the CPU 20 when a signal transmission device (hereinafter, referred to as NCU) in the fax 1 detects that the line has been disconnected and a predetermined current has stopped flowing through the line. . The changeover switches 12a and 12b are both switched to the telephone in the initial state, and are switched to the telephone or the fax via the switch control circuit 12c by a control signal from the CPU 20 or a ground signal from the switch 12d. Here, by turning on the FAX switch 12d, the changeover switches 12a, 12b are switched via the switch control circuit 12c.
Is forcibly switched to the fax side.

The telephone side of the changeover switches 16a, 16b is connected in series with the telephone 2 and an on-off hook detection circuit that outputs a detection signal to the CPU 20 when detecting the on-hook state or the off-hook state of the telephone 2, and loads the changeover switches 16a, 16b. The side is connected to a resistor 18 having a predetermined load resistance value. The changeover switches 16a and 16b are both switched to the telephone in the initial state, and are switched to the telephone or the load in conjunction with the control signal from the CPU 20 via the switch control circuit 16c. Note that the changeover switch 12 described above is used.
a, 12b16a and 16b use short-circuit type relay switches that do not cause an instantaneous interruption during switching.

The CPU 20 operates based on a clock output from the timing generation circuit 22. The CPU 20 has a read-only memory (hereinafter, referred to as a ROM) for storing a system program for automatic reception according to the present invention described later in detail. twenty one
And a random access memory (hereinafter referred to as RAM) 23 having a storage capacity of 30 kilobytes for storing speech synthesis data, and a timer 27 for measuring a time of, for example, 4 seconds.
Is connected. Further, the CPU 20 includes a bell drive circuit 29 that outputs a ringing signal of the bell to the speaker 30 and a maximum number of ringing times when the calling side performs a call operation and rings the ringing side of the called side when receiving a call. , A read / write control circuit (hereinafter referred to as an R / W control circuit) 24 for controlling reading and writing of the RAM 23, and an address counter 26 for counting addresses of the RAM 23. And a recording switch 31a for performing a recording operation of the speech synthesis recording / reproducing unit 3.
And a reset switch 31b for resetting the address counter 26, and a data bus of the RAM 23 under the control of the CPU 20. / A) The bus multiplexer 32 which is alternatively connected to the circuit 43 is connected.

The timing generation circuit 22 outputs a predetermined timing signal to the RAM 23, the R / W control circuit 24, the counter control circuit 25, the address counter 26, and the bus multiplexer 32.

The voice to be stored in the RAM 23 is a microphone 40, a low pass filter (hereinafter referred to as LPF) 41 having a cutoff frequency of 3.0 KHz, and an 8-bit A / D conversion circuit 42 having a sampling frequency of 6 KHz.
And an address counter via the bus multiplexer 32
The data is stored at a predetermined address in the RAM 23 specified by 26.
The audio data output from the RAM 23 is output to a buffer circuit 45 via a bus multiplexer 32, an 8-bit D / A conversion circuit 43, and a band-pass filter (hereinafter, referred to as BPF) 44.

To store voice data in the RAM 23 of the facsimile apparatus configured as described above, first, the reset switch 31
By pressing b to set the address counter to zero and then pressing the record switch 31, the first voice of the input from the microphone 40, for example, "This is XX. Please wait for a while." Is input to the RAM 23 via the LPF 41, the A / D conversion circuit 42, and the bus multiplexer 32, and is stored as audio data of 48 kilobits per second from the address zero of the RAM 23. At the end of the first voice, the storage switch 31a is pressed again and the address counter 2
Stop 6. The address of the address counter at this time is assumed to be address X.

Next, for example, after storing the voice data of the second voice (maximum 2.5 seconds) of "Sorry, I am not available." From the address X + 1 of the RAM 23 by turning on the storage switch 31a as described above, At the end of the sound, the recording switch 31a is pressed again to stop the address counter 26, and the address of the address counter 26 is reset to zero.

Here, as described above, since the RAM 23 has a recording capacity of 30 kilobytes and can store the first and second audio data for 5 seconds, the storage of the first first audio data is started. 2.5 seconds later, bell drive circuit 29 and speaker 3
A predetermined signal sound may be output via 0. If it is desired to store audio data of 5 seconds or longer in the RAM 23, the storage capacity of the RAM 23 may be increased as necessary. As a backup power supply for the RAM 23, a voltage of -48V applied to the telephone line from a telephone exchange is used.

The operation of the facsimile apparatus according to the present invention when receiving a call will be described with reference to the flowcharts of FIGS. 1 (A) and 1 (B). Here, in the initial state, the changeover switches 12a, 12b, 16a, and 16b are all assumed to be connected to the telephone, and the address of the address counter 26 is reset to zero. It is assumed that the second audio data is stored in the RAM 23.

First, in step 1, a call originates from the other party's telephone or facsimile machine, which causes a polarity reversal in the called party's telephone line as is known. At this time, the polarity inversion circuit 14 detects the polarity inversion and outputs a detection signal.
Output to CPU20. In response, in step 2, the CPU 20 sends the changeover switch 16 via the switch control circuit 16c.
After the apparatus is connected to the telephone line by switching a and 16b to the load side, the first voice data is read out from the address zero of the RAM 23 in step 3 and the voice of the voice data is synthesized to connect the telephone line. To the calling party via Next, in step 4, the timer 27 outputs, for example, four seconds.
When the CNG signal detection circuit 15 detects a CNG signal (FIG. 3) from the calling facsimile machine in step 5, the detection signal is output to the CPU 20 and the process proceeds to step 6. In response to this, the CPU 20 switches the changeover switches 12a and 12b to the FAX side via the switch control circuit 12c, and then the FAX 1 performs a facsimile reception operation according to the T.30 protocol recommended by CCITT. After this receiving operation, the NCU in the FAX 1 disconnects the connection with the telephone line in step 8 and the FAX line disconnection detection circuit 1 in step 9 in accordance with T.30 phases C, D and E recommended by CCITT.
3 detects this line disconnection and outputs the detection signal to the CPU 20. In response to this, in step 10, the CPU 20 switches the changeover switches 12a, 12b to the telephone via the switch control circuit 12c, and then ends the incoming call processing and returns to the initial state.

In step 5 described above, if no CNG signal is detected within 4 seconds after step 3, the process proceeds to step 11, where the CPU
20 drives the bell driving circuit 29 to ring the speaker 30 on the called side, and then proceeds to step 12. In step 12, the on-off hook detection circuit 17 detects whether the telephone 2 is in the off-hook state. If the telephone 2 is in the off-hook state, the process proceeds to step 14, and if not, the process proceeds to step 13.

After stopping the operation of the bell drive circuit 29 in step 14, the CPL 20 switches the changeover switches 12a, 12b to the telephone via the switch control circuit 12c, and enters a normal call operation in step 16. After the call, the operator goes on-hook, the on-off hook detection circuit 17 detects this, and outputs a detection signal to the CPU 20. In response to this, in step 18, the CPU 20 recognizes that the line is disconnected, resets the address of the address counter 26 to zero address via the counter control circuit 25, and ends the incoming call processing to initialize Return to the state.

In step 13, the bell drive circuit 29 sets the bell to 10
It is determined whether or not the sound has been ringed. If the sound has been sounded 10 times or more, the process proceeds to step 19, and if the sound has been sounded less than 10 times, the process proceeds to step 11. In step 19, RAM23
After the above-mentioned second voice stored from the predetermined address is transmitted to the calling party in the same manner as described above,
At 20, the CPU 20 switches the changeover switches 16a and 16b to the telephone via the switch control circuit 16c. Further, in step 21, the telephone line is connected to the telephone set 2 by the switching in step 20, but the telephone line is disconnected because the telephone line 2 is in an on-hook state, that is, the DC loop of the telephone line is open. The process ends and returns to the initial state.

If the facsimile machine on the calling side does not have a CNG signal transmission function and wants to automatically receive the fax 1 on the called side, turn on the switch 12d and switch the changeover switches 12a and 12b to the fax side in conjunction. It should be left. This allows fax
In 1, automatic reception becomes possible.

In the above embodiment, the synthetic audio recording / reproducing unit 3 is used to record and reproduce the first and second audio data. However, the present invention is not limited to this, and an announcement device using a conventional magnetic tape recorder is used. You may.

[Effects of the Invention] As described above in detail, according to the present invention, in a facsimile apparatus equipped with a telephone, a CNG signal detecting means for detecting a CNG signal transmitted from a calling facsimile apparatus via a communication line Ringing sound output means for outputting a ringing sound for making a telephone call; hook detecting means for detecting whether or not the telephone is off-hook; and a facsimile of a calling side via the communication line for transmitting a predetermined voice message. After a line connection between the voice output means to be transmitted to the apparatus and the facsimile apparatus on the calling side, a voice message to wait for a while is transmitted using the voice output means, and a CNG signal for a predetermined first period is transmitted. Monitoring is performed, and if a CNG signal is detected during the first period, facsimile communication is started. Using the ring tone output means to output a ring tone and monitor whether or not the telephone is off-hook using the hook detection means, and when the off-hook of the telephone is detected, connect the communication line to the telephone. On the other hand, if the off-hook of the telephone is not detected even after a predetermined second period after the first period has passed, a voice message indicating absence is output using the voice output means. Control means for performing such control.

Therefore, after the line connection with the calling facsimile machine,
Using the voice output means, a voice message to wait for a while is transmitted, and a predetermined first period CN is transmitted.
Monitor the G signal, if the CNG signal is not detected, output the ringing sound using the ringing sound output means and monitor whether the telephone is off-hook, if the off-hook of the telephone is detected The communication line is connected to the telephone. That is, after the ringing tone, the calling side can talk with the called side using the telephone, and the called side apparatus always shifts to the automatic reception operation of the facsimile apparatus as in the conventional example. Can be solved.

[Brief description of the drawings]

1 (A) and 1 (B) are flowcharts showing the operation of an automatic reception type facsimile apparatus according to one embodiment of the present invention, FIG. 2 is a block diagram of the facsimile apparatus, and FIG. 3 is a conventional facsimile apparatus. FIG. 3 is a diagram showing a timing chart of a CNG signal transmitted by the user. 1. Facsimile machine (FAX) 2. Telephone 3. Voice synthesis recording / reproducing section 12a, 12b Telephone / FAX selector switch 15 CNG signal detection circuit 29 Bell driving circuit 30 ……speaker.

Claims (1)

(57) [Claims] 1. A facsimile apparatus equipped with a telephone, CNG signal detecting means for detecting a CNG signal transmitted from a calling facsimile apparatus via a communication line, and outputting a ring tone for making a telephone call. Ringing tone output means, hook detecting means for detecting whether the telephone is off-hook, voice output means for sending a predetermined voice message to the calling facsimile apparatus via the communication line, and calling side. After the line is connected to the facsimile machine, the voice output means is used to send a voice message to the effect that the user is to wait for a while, and the CNG signal is monitored for a predetermined first period. If the CNG signal is not detected while the facsimile communication is started when the Using the hook detecting means together to output to monitor whether the phone is off-hook,
When the off-hook of the telephone is detected, the communication line is connected to the telephone. On the other hand, when the off-hook of the telephone is not detected after a predetermined second period after the first period. A facsimile apparatus, comprising: control means for controlling to output a voice message indicating absence using the voice output means.