JPH08237390A - Facsimile equipment with automatic recording function - Google Patents

Abstract

PURPOSE: To prevent the errorneous change-over of facsimile communication and the interruption of recording business halfway by no sound in voice or the same frequency component as CNG in a facsimile equipment with an automatic recording function. CONSTITUTION: When a TAD control 5 detects no sound or CNG during recording, a MODEM processor 4 transmits DIS and, then, the TAD control 5 starts recording voice again. Then, unless the MODEM processor 4 detects DCS or DTC within a prescribed time, CPU 1 stops the recording operation of the TAD control 5 and eliminates compression voice data in RAM after recording is started.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a facsimile machine having an answering machine function. More specifically, the present invention relates to a facsimile device that controls the switching so that after receiving a call, if the other party is a voice, voice is recorded, and if the other party is a facsimile device, facsimile communication is performed.

[0002]

2. Description of the Related Art In recent years, a facsimile machine with an answering machine function has been put on the market in which a telephone answering machine (TAD) is incorporated in a facsimile machine. A fax machine with an answering machine
A telephone mode that can be used according to various usage modes of the user,
It has standby modes such as fax mode, telephone / fax mode, and TAD / fax mode.

Among these, in the TAD / fax mode, the facsimile machine operates the answering machine after receiving a call when a call signal (16 Hz) arrives and records a voice signal on the telephone line. If silence or CNG (calling tone ITU-T Recommendation T.30) for a predetermined time or longer is detected during this recording, the facsimile machine stops the voice recording operation and transmits DIS (digital identification signal). After that, if a DCS (digital command signal) or a DTC (digital transmission command) is received from the facsimile machine of the other party, the facsimile machine will receive the TU-T recommendation T.264. Facsimile communication is performed according to 30.

If the other party is an automatic facsimile machine,
CNG is sent. Further, the other party may not send CNG in the manual facsimile machine, but in this case, the silent state continues. Therefore, if the facsimile machine detects CNG or silence, it can determine that the other party is a facsimile machine.

[0005]

However, even when the other party is a human being, the person is not speaking continuously, and some silence is included. When this silent state is prolonged, the facsimile apparatus determines that there is no sound, stops recording, and starts facsimile communication. Also, CNG is 1,100 Hz
Is a signal that lasts for 500 ms.
If the component of 0 Hz is included, the facsimile apparatus erroneously determines that this is CNG, stops recording, and starts facsimile communication.

The present invention has been made in view of the above, and an object thereof is to prevent the facsimile apparatus from erroneously stopping recording due to erroneous detection of silence or CNG.

[0007]

In order to solve the above problems, the invention according to claim 1 records a voice signal from a line, and stops the recording when a silence or a calling tone is detected during the recording. Then, in a facsimile machine with an answering machine that sends a facsimile identification signal, recording is restarted after sending a facsimile identification signal (CNG), and when a facsimile command signal (DCS or DTC) is received, recording is ended and facsimile communication continues. It is characterized by doing.

According to a second aspect of the invention, in the first aspect of the invention, after the recording is started again, when the facsimile command signal cannot be received within a predetermined time, the recording is ended, and the voice time during the recording is a predetermined value. The following will erase the recording.

[0009]

According to the first aspect of the invention, since the silence or CNG is detected and the recording is restarted after sending the DIS, the recording is restarted even if the silence or CNG is erroneously detected, and the other party's message is recorded. be able to. When the other party's facsimile machine detects silence or CNG, the other party's facsimile machine sends DCS or DT after sending DIS.
Since C is sent, if this is detected, recording can be terminated and the facsimile communication procedure can be performed thereafter.

In the invention of claim 2, there is a case where no audio signal is recorded after the recording is resumed, and it is useless to leave such recording in the storage medium (RAM or the like). I try to erase it.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a block diagram showing an outline of a circuit configuration of the embodiment facsimile. Network control circuit 20
Has a terminal LINE and a terminal TEL. Terminal L
A telephone line is connected to INE. A telephone (not shown) is connected to the terminal TEL. The relay 21 connects the wire from the terminal LINE to the relay 22 or the line transformer 2.
Switch to the primary side of 3.

On the other hand, the relay 22 switches the line from the terminal TEL between the relay 21 and the DC power supply circuit 24. The switching operation of the relays 21 and 22 is controlled by the CPU 1 described later. In the standby state, the relays 21 and 22 are switched to the states indicated by the solid lines,
The phone is directly connected to the phone line. Photo coupler 2
6 detects the off-hook of the telephone and notifies the CPU 1 of this.

The DC power supply circuit 24 supplies a DC voltage to the telephone when the telephone is disconnected from the telephone line (when the relays 21 and 22 are in the state shown by broken lines), and the photocoupler 26 detects the off-hook of the telephone. I am able to do it. The photocoupler 25 is for detecting a call signal of the telephone line, and is connected to the CPU 1.

The secondary side of the line transformer is connected to the modem processor 4 via the filter 3. The modem processor 4 has a function of modulating / demodulating an image signal (ITU-T recommendation V.27ter, V.29, etc.), a function of modulating / demodulating a binary procedure signal such as DIS, DCS (ITU-T recommendation V.21), CNG, or the like. It has a function of identifying or generating a tone signal such as DTMF.

The modem processor 4 is connected to the bus line 1a. The modem processor 4 takes in the data to be modulated and transmitted from the bus line 1a, and outputs the received and demodulated data to the bus line 1a.

A TAD controller 5 is connected to the filter 3. The TAD control 5 performs analog / digital conversion on the voice signal on the telephone line and converts the voice signal into compressed voice data by using an appropriate voice compression technique (PARCOL, CELP, etc.). On the contrary, the TAD control 5 also has a function of decompressing compressed audio data and performing digital / analog conversion to generate an audio signal. Furthermore, the TAD control 5 also has a voice counter function.

The TAD control 5 is also the bus line 1a
The compressed audio data is exchanged with the bus line 1a. The compressed audio data is RA described later.
Stored in M8. The compressed audio data may be stored in the memory provided in the TAD control 5.

The audio circuit 2 is connected to the secondary side of the line transformer 23. The audio circuit 2 amplifies the audio signal generated by the TAD control 5 so that it can be heard by the user through the speaker SP.

The bus line 1a includes a CPU 1, a keypad 6, a display unit 7, a RAM 8, a ROM 9, a printer 10,
The scanner 11 is connected. The CPU 1 controls operations such as communication, recording, and reading of the facsimile apparatus of the embodiment, and also processes binary image data by a method such as MH and MR (ITU).
T Recommendation T. It is encoded in 4) or the encoded image data is decoded into binary image data.

The RAM 8 stores the compressed audio data described above,
Stores image data and other variable data. ROM9
Stores fixed data such as programs and fonts of the CPU 1. The keypad 6 inputs various commands such as setting a standby mode and starting communication to the facsimile device.

The display unit 7 displays various states of the facsimile machine. A thermal recording printer, a thermal transfer printer, or the like is applied to the printer 10, and the received image data is printed on recording paper. Further, the scanner 11 reads an image on a document and generates binary image data.

Next, the TAD /
The operation in the FAX mode will be described below with reference to FIGS. In the standby state, the relays 21 and 22 are in the state shown by the solid line in FIG. The CPU 1 monitors whether or not a calling signal is received through a signal from the photocoupler 25 (step (hereinafter referred to as ST) 1).

When the CPU 1 determines that the call signal has come, it switches the relays 21 and 22 as shown by the broken lines in FIG. 1 (ST2). Then, the CPU 1 operates the TAD control 5 to send a response message (OGM) to the telephone line (ST3).

After sending the response message, the TAD control 5 starts recording a voice signal on the telephone line (ST
4). The TAD control 5 outputs the compressed audio data on the bus line 1a. CPU1 is a bus line 1a
The above data is written in RAM8.

The CPU 1 determines whether or not silence has been detected for a certain period (ST5). If no sound is detected for a predetermined time, the CPU 1 branches to ST10, and if not, ST6.
Branch to. Further, the CPU 1 determines whether the modem processor 4 has detected CNG (ST6). CPU
When 1 is determined as Yes, the process branches to ST10, and when No is determined, the process branches to ST7.

Next, the CPU 1 determines whether the telephone is off hook through the photo coupler 26 (ST7).
If the determination at ST7 is Yes, the CPU 1 returns to ST23.
If No, the process branches to ST8. Furthermore, CPU1
Is the modem processor 4 detecting a busy tone?
That is, it is determined whether or not the other party has disconnected the line (ST
8). If this determination is Yes, the CPU 1 branches to the process of ST23, and if No, it branches to ST9.

Next, the CPU 1 determines whether or not the recording time has expired (ST9). This judgment is Ye
If s, CPU1 branches to ST23, and if No, CP
U1 branches to ST5. In ST23, the CPU 1
The recording operation of the AD control 5 is ended. And
The CPU 1 switches the relays 21 and 22 as shown by the solid line in FIG. 1 and returns to the standby state (ST24).

On the other hand, when branching from ST5 and ST6 to ST10, the CPU 1 temporarily stops the recording operation of the TAD control 5. Next, the CPU 1 gives a command to the modem processor 4, and based on the command, the modem processor 4
NSF (non-standard function), CSI (callee identification), DI
S is sent to the telephone line (ST11).

Next, the CPU 1 starts a timer T for measuring the time after resuming recording (ST12). Then, the CPU 1 starts the recording operation of the TAD control 5 and the counting operation of the audio counter (ST13).

Next, the CPU 1 detects whether the modem processor 4 has detected NSS (non-standard function setting), TSI (transmission terminal identification), DIS from the other party, or NSC (non-standard function instruction), CIG (calling terminal). Identification), it is determined whether DTC is detected. If the determination is Yes, the CPU 1 branches to ST18 to end the recording operation of the TAD control 5, and thereafter performs facsimile communication. On the other hand, S
If the determination in T14 is No, the CPU 1 branches to ST15.

In ST15, as in ST7, the CPU 1
Determines if the phone goes off-hook. ST15
If the determination is Yes, the CPU 1 branches to ST19, and if No, the CPU 1 branches to ST16. S
At T16, similarly to ST8, the CPU 1 determines whether or not the other party has disconnected the line. If the determination in ST16 is Yes, the CPU 1 branches to ST19, and if the determination is No, the CPU 1 branches to ST17.

In ST17, the CPU 1 determines whether the timer T has timed out. Yes in ST17
If s, the CPU 1 branches to ST19, and if No, the CPU 1 branches to ST14. In ST19, CPU
1 stops the recording operation and voice counting operation of the TAD control 5. Then, the CPU 1 switches the relays 21 and 22 to the positions shown by the solid lines in FIG. 1 to disconnect the telephone line from the line transformer 23.

Next, the CPU 1 fetches the voice count value n of the TAD control 5 and compares it with a predetermined threshold value n _th . When the voice count value n is less than n _th , it is determined that voice is not recorded, and the CPU 1 erases the compressed voice data in the RAM 8 after the recording is restarted (ST22) and returns to the standby state. When voice count value n is equal to or greater than n _th, as a voice is recorded, CPU 1 returns to the standby state without erasing the record.

In the above embodiment, the voice counter is applied as means for determining whether or not there is voice during recording after resuming recording, but the present invention is not limited to this and can be changed as appropriate.

[0035]

As described above, in the facsimile machine with an answering machine according to the first aspect of the invention, even if the recording is temporarily interrupted due to silence or CNG component in the voice, the facsimile identification signal is generated. Since the recording is started again after the transmission, there is an advantage that the other party's message can be continuously recorded.

Further, in the facsimile machine with an answering machine according to the second aspect, since the voice is not recorded after the recording is resumed, it is deleted, so that the capacity of the storage medium such as the memory is not wasted. Have advantages.

[Brief description of drawings]

FIG. 1 is a block diagram showing an outline of a circuit configuration of a facsimile apparatus according to an embodiment of the present invention.

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

FIG. 3 is a flowchart showing a sequel to FIG. 2;

FIG. 4 is a flowchart showing a sequel to FIG. 3;

[Explanation of symbols]

1: CPU, 2: audio circuit, 3: filter, 4: modem processor, 5: TAD control, 6: keypad, 7: display unit, 8: RAM, 9: ROM, 10: printer, 11: scanner, 20 : Network control circuit 21,2
2: relay, 23: line transformer, 24: DC power supply circuit, 25, 26: photo coupler, T: timer

Claims (2)

[Claims] 1. A facsimile identification signal in a facsimile machine with an answering machine, which records a voice signal from a line, stops recording when a silence or a calling tone is detected during recording, and sends a facsimile identification signal. A facsimile machine with an answering machine, which starts recording again after transmission, and terminates recording and continues facsimile communication when a facsimile command signal is received. 2. The absence according to claim 1, wherein the recording is ended when the facsimile command signal is not received within a predetermined time after the recording is started again, and the recording is erased when the voice time during recording is less than a predetermined value. Facsimile machine with recording function.