JPH0638623B2 - Communication device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a communication device that performs communication according to a predetermined communication procedure.

[Prior Art] In a conventional device of this type, for example, a facsimile device used by connecting to a telephone line, if the automatic reception function is set, the line is automatically facsimiled from the telephone when a call is made from the line. After switching to the device side, communication control is performed according to a predetermined facsimile procedure.

Therefore, when the other party is calling from the telephone and wants to make a normal call, the device cannot receive the predetermined facsimile procedure signal, so the communication is unilaterally errored after waiting for the predetermined time specified in the standard. It will end.
The automatic reception function enables quick communication with respect to facsimile communication without any operation, but if the line is likely to be called by a normal voice terminal, the above problem occurs. This is because the conventional device cannot distinguish a call from a normal telephone and a call from a facsimile device if the device remains set in the automatic reception mode.

[Object] The present invention has been made in view of the above points, and an object thereof is to provide a communication device that can identify a communication partner by a simple and inexpensive structure and that does not generate unnecessary noise. To do.

[Examples] Hereinafter, the present invention will be described in detail based on examples shown in the drawings. However, a facsimile apparatus will be described below as an example.

FIG. 1 is a block diagram showing the overall structure of a facsimile apparatus to which the present invention is applied. The reference numeral 1 in the figure is a crystal oscillator, which generates a reference clock for the entire apparatus.

The output clock of the crystal oscillator 1 is a CPU (central processing unit) composed of a desired microprocessor element or the like.
2 is given as a reference clock. The CPU 2 is connected to a ROM 3, a RAM 4, a timer 5, PPIs (Programmable Parallel I / O) 6, 7, 8 and 10, and UPIs (peripheral CPUs) 9 and 11 by a data and address bus.

A modem controller 12, a tonal detector 13, and a modem 14 are connected to the timer 5, PPIs 6 and 7, respectively, and data input / output is performed with a communication line via these input / output ports. Tonal detector 1
A subscriber telephone line W and a telephone 28 are connected to 3 and 14 via a connection card (wiring board) 26.

The PPI 8 is for performing data input / output with the operation panel 31 and power supply control. The operation panel 31 and the feed switch 3 are operated via the operation panel / power supply control device 16.
It is connected to 2. Further, the operation panel 31 has a publicly known telephone switch. With this switch, the telephone line connected to the facsimile apparatus can be connected to the telephone 28 so that the facsimile communication mode can be switched to the normal telephone mode. There is.

The UPIs 9 and 11 control the operation of the recording system.
The UPI 9 includes a plunger driver 21 for controlling the recording paper cutter plunger 34, and a motor S for conveying the recording paper.
A motor driver 22 for controlling the SM2 is connected. A thermal head TPH is connected to the UPI 11 via a thermal head driver 25, and the UPI 11 drives the thermal head TPH according to print data to perform printing. The recording paper RP is conveyed by a pinch roller PR driven by a motor SSM2 as the recording operation progresses. Further, a recording paper sensor RPS constituted by using a photo interrupter, a limit switch, etc. is provided on the conveyance path of the recording paper RP.

The PPI 10 inputs / outputs data with respect to the reading system and the alarm system. An image data processor / driver 23 and a lamp driver 24 are connected to the PPI 10. That is, the document DOC is conveyed by the feed roller FR while being illuminated by the light source LMP controlled by the lamp driver 24, and the reflected light from the document DOC is coupled via the lens L onto the line sensor LS including a CCD sensor or the like. To be imaged.

The image data output from the line sensor LS is amplified by the amplifier 33, input to the image data processor / driver 23, and further sent to the main data bus via the PPI.

A buzzer speaker 19 is connected to the PPI 10 via a buzzer driver 18. The buzzer speaker 19 is also provided in the conventional device in order to notify an error such as no recording paper or a communication procedure failure. In the embodiment of the present invention, it is also used for identifying the terminal on the calling side as described later. The buzzer speaker 19 is driven by the drive signal generated by the UPI 19 when issuing an alarm, and generates a buzzer sound.

The power of the entire device is supplied from the main power supply 27. However, in the standby state, the main power supply device 27 is off, and the standby power supply 29 causes the operation panel 31 and NC to be disconnected.
Only the U (network control device) 15 is supplied with power and is in a standby state. A commercial AC power supply is connected to these power supply devices 27 and 29 via a main switch MSW and a noise filter 30.

The NCU 15 is an NCU having an automatic reception function, and the line is connected to the telephone 28 according to a call signal (CI) from the telephone line.
Side to the facsimile side. At this time, the main power supply device 27 is activated via the operation panel / power supply control device 16, and power is supplied to the tonal detector 13 and the modem 14. The main power can be turned on from the operation panel 31.

Next, FIG. 2 illustrates the configuration of the main parts of the NCU 15 and the buzzer driver 18.

As shown in FIG. 2, the telephone line W is always connected to the telephone 28 by a relay CML. Relay CML
A call signal detection circuit CIS is connected to the upper terminal of the telephone together with the telephone 28 through an insulating transformer LT2. When a call signal is input from the line, a call signal detection signal CI is output from the call signal detection circuit CIS, whereby the main power supply is turned on, and the activated CPU 2 causes the relay CML to operate via the PPI 8 to the toon detector 13 and Switch to the modem 14 side. In addition,
The telephone line W, the tonal detector 13, and the modem 14 are insulated by the transformer LT1 in the connected state.

On the other hand, the buzzer driver 18 has an amplifier AMP,
The drive signal input via the switch SWB is amplified to drive the buzzer speaker 19. A signal line from the telephone line to the modem 13 and the tonal counter 14 is connected to one of the contacts of the switch SWB, and an alarm signal generated by the UPI 9 or a voice signal for indicating normal termination is input to the other contact. It The switch SWB is switched by the CPU 2 via the PPI 6 according to the procedure described later.
Controlled by.

The NCU 15 shown in FIG. 2 has an off-hook detection circuit and the like for various known communication controls.
Illustration is omitted here.

Next, the automatic reception operation in the above configuration will be described in detail with reference to the flowchart of FIG. Here C
A control procedure of the CPU 2 in the G2 facsimile procedure based on the CITT recommendation T3 will be illustrated.

When a call signal is received from the telephone line, the main power supply device 27 is first started up, and the CPU 2 starts control. In step S1 of FIG. 3, the CPU 2 checks the output of the recording paper sensor RPS to determine the presence / absence of the recording paper RP. Recording paper RP
If there is not, the process proceeds to step S15, the main power supply is turned off via the PPI 8, and the communication ends in error. At this time, the buzzer speaker 19 may be used to generate an alarm sound.

In step S2, the buzzer is initialized. That is, the CPU 2 connects the switch SWB of FIG. 2 to the contact on the right side through the PPI 6 so that the drive signal from the UPI 9 is input. At the same time, timer 5
Is started, and various timings such as the initial identification time required in the pre-procedure can be controlled.

Then, in step S3, the light source LMP of the document reading system is turned on. This is to stabilize the light amount of the light source LMP in preparation for image transmission by polling or the like.

In step S4, the relay CML shown in FIG. 2 is switched to the facsimile machine side after the modem 14.

In step S5, CED (callee identification) from the model 14
The signal is sent to the telephone line W.

In step S6, the switch SWB in FIG. 2 is switched to the right side so that the buzzer speaker drive signal output from the UPI 9 is input to the buzzer speaker 19. Ie C
The buzzer speaker 19 is prevented from being driven by the ED signal.

Then, in step S7, a GI2 (group 2 identification) signal is sent to the line for 1.5 seconds.

In step S8, the switch SWB is switched to the left side in FIG. 2 so that the buzzer speaker 19 is driven by the signal of the telephone line W. Therefore, the calling station is a voice terminal,
When the operator utters "Hello ...", this voice is output from the buzzer speaker 19.

In step S9, it is determined whether the tonal detector 13 has detected the other party's GC2 (group 2 command) signal. This detecting operation is performed for 3 seconds until it is confirmed by the timer 5 that 3 seconds have elapsed in step S12. As is well known, in the G2 mode, since the tonal procedure is performed by the procedure signal having a predetermined frequency, the tonal detector 13 discriminates the other party's signal. The tonal detector 13 measures the pulse width of the signal input from the telephone line W by the reference clock and detects the frequency of the received signal.

If the tonal detector 13 can detect the GC2 signal in step S9, the switch S is again activated in step S10.
The WB is switched to the right side in FIG. 2, and the buzzer speaker 19 and U
After connecting PI9, in step S11, the same G2 as in the past is used.
Performs facsimile communication.

On the other hand, if the GC2 signal cannot be received for a second, the process proceeds to step S13, and it is determined whether or not the initial identification time of 35 seconds defined by the standard has elapsed after receiving the call. If 35 seconds has not elapsed, the process returns to step S6 and the above procedure is repeated. If the initial identification time of 35 seconds has elapsed, the process ends in error in step S14, and the switch SWB is set to U.
After connecting to the PI 9 side and connecting the relay CML to the telephone 28 side, the main power supply device 27 is shut off. At this time, the buzzer speaker 19 outputs an error alarm sound.

As described above, when the calling operator desires to make a call, the voice is output from the buzzer speaker. Therefore, the operator connects the telephone 28 to the line by the switch of the operation panel 31, and the following normal operation is performed. You can make a call just as you would a phone.
This is shown in FIGS. 4 (A) and 4 (B).

FIG. 4 (B) shows the procedure of the embodiment of the present invention under the above control, and FIG. 4 (A) shows the conventional procedure for comparison.

As shown in FIG. 4 (A), when the operator uses a telephone to make a call to the called side facsimile machine set to automatic reception, conventionally, at the time T1, the facsimile machine N
The line is switched from the telephone to the facsimile machine by the CU, and then the called facsimile machine transmits a CED signal and a GI2 signal having a length of t1 (usually about 3 seconds) and t2 (about 1.5 seconds). . And time t
The GI2 signal is repeatedly transmitted every 3 times and waits for the reception of the corresponding procedure signal.

However, since the calling terminal is a telephone and cannot transmit the procedure signal, after the procedure starts, the initial identification time t4 (35
Second), the called side facsimile machine sets time T
At 2, the line is disconnected and an error ends.

On the other hand, in the embodiment of the present invention, as shown in FIG. 4 (B), when the line is switched from the telephone to the facsimile at time T1, the buzzer speaker 19 of the facsimile machine is on the line except during the transmission of the CED signal and the GI2 signal. When the calling side is a voice terminal, the buzzer speaker 19 outputs the voice of the called side operator. Therefore, the operator of the called facsimile operates at time T3.
At, the line can be manually returned to the telephone, and thereafter, the call can be performed in the same manner as a normal telephone.

Although the G2 facsimile apparatus has been described as an embodiment in the above, the present invention can be applied to other types of facsimile apparatuses.

FIGS. 5 (A) and 5 (B) show the communication state when the embodiment of the present invention is applied to a G2 / G3 dual mode facsimile apparatus. Here, only the procedure signals to be transmitted are different. FIG. 5 (B) shows the procedure according to the present invention, and FIG. 5 (A) shows the procedure of the conventional G3 apparatus for comparison.

In the conventional method, when a facsimile machine is called, after the line is switched to the facsimile machine at time T1, C
The ED signal is transmitted. Thereafter, the DIS (digital identification) signal and the GI2 signal are transmitted at the above intervals. Also in this case, when the calling side is a telephone set, the line is disconnected at T2 after the lapse of the initial identification time, and communication becomes impossible.

When the present invention is adopted, the line is switched to the facsimile machine at time T as shown in FIG.
After the CED and DIS signals are transmitted, the signal on the line is the buzzer speaker 1 during the subsequent procedure signal intervals.
It is output from 9. Therefore, when the calling side is a voice terminal, the voice is output from the buzzer speaker.
When the called operator hears this voice, he / she switches the line at time T3, and thereafter, the call can be performed in the same manner as a normal telephone.

As described above, even when the facsimile machine is set to the automatic reception mode, the type of the calling terminal can be identified by the voice output from the buzzer speaker, which allows the other party to use a normal voice terminal such as a telephone. If so, appropriate operation can be performed, and the line can be effectively used by the facsimile device and the telephone even in the automatic reception mode. Moreover, according to the above-mentioned embodiment, as shown in FIG. 3, the buzzer speaker is disconnected from the line immediately when the procedure signal of the calling side is received, and the buzzer speaker is turned off during the transmission of the procedure signal. Since the lines are separated, there is an advantage that no annoying sound due to the procedure signal is output.

Although the embodiment relating to the facsimile machine has been described above,
The present invention can be implemented in various communication devices used by connecting to a telephone line.

[Effect] As is apparent from the above, according to the present invention, until the predetermined communication procedure signal is received, the voice from the communication partner is output so as to be heard by the user, and the predetermined communication procedure signal is output. By controlling so that voice is not output when received, the user can be immediately notified that the communication partner is a telephone when the partner is a telephone, and the communication partner communicates according to a predetermined communication procedure. In the case of a device that performs the above, it is possible to provide a communication device in which unnecessary noise is not generated.

[Brief description of drawings]

FIG. 1 is a block diagram showing the structure of a facsimile apparatus adopting the present invention, FIG. 2 is a block diagram showing the structure around the NCU of the facsimile apparatus adopting the present invention, and FIG. 3 is a facsimile apparatus adopting the present invention. FIG. 4 (A) is a flow chart for explaining the communication procedure of FIG. 4, and FIG. 4 (A) is an explanatory view showing the communication procedure in the conventional G2 facsimile apparatus.
Is an explanatory view showing a communication procedure in a G2 facsimile apparatus adopting the present invention, FIG. 5 (A) is an explanatory view showing a communication procedure in a conventional G2 / G3 facsimile apparatus, and FIG. 5 (B) adopting the present invention. FIG. 6 is an explanatory diagram showing a communication procedure of the G2 / G3 facsimile apparatus. 2 ... CPU, 3 ... ROM 4 ... RAM, 5 ... Timer 6, 8, 10 ... PPI, 9, 11 ... UPI 14 ... Modem, 15 ... NCU 18 ... Buzzer driver, 19 ... Buzzer speaker 28 ... Telephone W ... Telephone line

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hisao Terashima 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon Inc. (56) References JP-A-51-71004 (JP, A) JP-A-56 -164662 (JP, A)

Claims (1)

[Claims] 1. A communication means for communicating with a communication partner according to a predetermined communication procedure, a voice output means for outputting a voice from the communication partner so that the user can hear, and a predetermined communication procedure signal is received by the communication means. A communication device comprising: a control means for controlling the voice output means so that a voice is output until the predetermined procedure signal is received and the voice is not output when the predetermined procedure signal is received.