JPH03123169A - Facsimile equipment with automatic answering telephone function - Google Patents

Abstract

PURPOSE:To prevent such a misoperation as an answer message is detected as a CNG signal by inhibiting the answer message from being reproduced and outputted in an automatic answering telephone part extending over several seconds after incoming and effectuating a detecting operation in a CNG signal detecting circuit. CONSTITUTION:When an incoming signal is sent from a line 2, an automatic answering telephone part 6 and a CNG signal (non-voice terminal discriminating signal) detecting circuit 7 are connected to the line. Subsequently, an output of an answer message in the automatic answering telephone part 6 is inhibited extending over several seconds, and also, a CNG signal detecting operation in the CNG signal detecting circuit 7 is effectuated. When the CNG signal is detected in this effective period, the calling side decides it to be a facsimile and brings a facsimile part 5 to switching connection to the line, and unless the CNG signal is detected, the calling side decides it to be a telephone set and the output of the answer message by the automatic answering telephone part 6 is started. In such a way, while the detecting operation of the CNG signal is effective, the output of the answer message is inhibited, therefore, it is not feared that the answer message is detected erroneously as the CNG signal.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a facsimile machine with an answering machine function.

[Prior art] As a conventional facsimile machine of this type, there is a
-281657 publication etc. are known. When an incoming call signal is sent from the line, the answering machine automatically connects to the line, and the answering machine immediately plays a response message and sends it to the line. At this time, if the calling party is a facsimile, a non-voice terminal identification signal (CNG)
CNG signals are sent out periodically.
The presence or absence of the CNG signal is checked by the signal detection circuit.

If a CNG signal is received before the transmission of the response message is completed, since the calling party is using a facsimile, the line is switched from the answering machine to the facsimile, and information sent via the line is automatically received. Start. On the other hand, if the CNG signal is not received by the time the transmission of the response message is completed, since the calling party is a telephone, recording of the voice signal sent via the line is started.

[Problems to be Solved by the Invention] However, this conventional device has the following problems. In other words, the CNG signal is standardized to 1100Hz, and if an audio signal of about 1100Hz is present in the response message, the CNG signal detection circuit converts the audio signal of about 1100Hz to CNG while the response message is being played back and transmitted. In some cases, it was mistakenly detected as a signal, and the function switched to facsimile even though the calling party was using a telephone. A component of around 1100 Hz is removed from the response message played by the answering machine and the message is converted to CN.
Although it is possible to prevent the G signal detection circuit from malfunctioning, the clarity of the response message will be impaired in this case.

Therefore, the present invention can prevent the CNG signal detection circuit from malfunctioning in which the response message is detected as a CNG signal without impairing the clarity of the response message. It is an object of the present invention to provide a facsimile machine with an answering machine function that can further improve reliability by eliminating such problems.

[Means for Solving the Problems] The present invention includes a facsimile unit that reads information on a document, transmits it via a line, and prints out information received via the line, and a facsimile unit that sends out a response message via the line. There is also an answering machine section that records voice signals received via the line, and a CN that is sent prior to image information.
A CNG signal detection circuit that detects the G signal (non-voice terminal identification signal) is installed, and after receiving a call, the answering machine and CNG signal detection circuit are connected to the line, and the answering machine responds for a few seconds and outputs a message. and C.
If the CNC signal detection circuit detects the CNC signal and detects a CNG signal while the CNG signal detection circuit is enabled, the line must be switched to the facsimile section and the CNG signal detected. For example, this is a facsimile machine with an answering machine function that outputs a response message from an answering machine section.

[Function] In a facsimile machine with an answering machine function that takes such measures, when an incoming call signal is sent from the line, the answering machine unit and the CNG signal detection circuit are connected to the line.

Then, the answering machine section is prohibited from outputting a response message for several seconds, and the CNG signal detection operation in the CNG signal detection circuit is enabled. If a CNG signal is detected by the CNG signal detection circuit during this valid period, the calling side determines that it is a facsimile and switches and connects the facsimile section to the line. If no CNG signal is detected within the valid period, the calling party is determined to be a telephone and the answering machine starts outputting a response message.At 1 and 8, the CNG signal detection operation in the CNG signal detection circuit becomes valid. The output of response messages is prohibited while
There is no possibility of erroneously detecting a response message as a CNG signal.

[Example] Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing the overall configuration. In the figure, reference numeral 1 denotes a transmitting/receiving unit that controls the transmission and reception of signals between the calling side and the calling side via the line 2. An external or built-in telephone section 3 is connected to the transmitting/receiving section 1 via a normally closed contact b1 of a changeover relay switch L1, and an incoming call detection circuit 4 is also directly connected thereto. The incoming call detection circuit 4 is
This is a circuit for detecting an incoming signal sent via line 2.

Further, the transmitter/receiver section 1 includes the changeover relay switch L1.
The facsimile section 5 is connected through the normally open contact a1 of the switch L2 and the normally closed contact b2 of the changeover relay switch L2. The facsimile section 5 reads information on a document using an image sensor and transmits the information via the line 2, and also prints out the information received via the line 2 onto recording paper using a print head.

Further, the transmitter/receiver 1 includes the changeover relay switch L.
The answering machine section 6 is connected via the normally open contact a1 of the switching relay switch L2 and the normally open contact a2 of the changeover relay switch L2.
A CNG signal detection circuit 7 is connected through the normally open contact al of the changeover relay switch L1, the normally open contact a2 of the changeover relay switch L2, and the contact of the open/close relay switch L3. The answering machine section 6 reproduces a preset response message and transmits it to the calling party via the line 2, and also records the voice signal received via the line 2. The CNG signal detection circuit 7 is a circuit for detecting a CNG signal sent from the calling side facsimile prior to image information.

Each detection signal from the incoming call detection circuit 4 and the CNG signal detection circuit 7 is provided to a control section 8, respectively.

The control section 8 operates according to detection signals from each detection circuit 4.7, and operates each relay switch Ll.

L2. It controls the switching of L3 and also controls the operations of the facsimile section 5 and answering machine section 6. Also, 3
It has a timer function that measures seconds.

When the control section 8 recognizes that an incoming signal has been sent via the line 2 based on the detection signal from the incoming call detection circuit 4, the program is configured to execute the automatic incoming call processing shown in FIG. There is.

That is, when the automatic call receiving process is started, first, the changeover relay switches Ll and L2 are respectively switched to the normally open side, and the open/close relay switch L3 is closed, and the answering machine section 6 and the CNG signal detection circuit 7 are connected to the line 2. At the same time, start a 3 second timer. Then, until this three-second timer times out, the answering machine unit 6 is prohibited from playing or transmitting a response message, and the CN
A circuit for monitoring the detection signal from the G signal detection circuit 7 (first
control means) Here, before the 3 second timer times out, the CNG signal is detected via the line 2 by the detection signal from the CNG signal detection circuit 7.
When it is recognized that the signal has been sent, the changeover relay switch L2 is returned from the normally open side to the normally closed side to switch and connect the facsimile section 5 to the line 2. Then, it instructs the facsimile unit 5 to start automatic reception. That is, a predetermined automatic reception procedure signal is sent out. When the information sent from the calling side via line 2 has been received, the changeover relay switch L1 is returned from the normally open side to the normally closed side, and the telephone section 3 is connected to the line 2. Line 2 is disconnected to end this process. On the other hand, if the CNG signal detection circuit 7 does not detect the CNG signal before the 3-second timer times out, the open/close relay switch L3 is opened and the CNG signal detection circuit 7 is disconnected from the line 2.

Next, a predetermined response message is sent to the answering machine 6 (for example, [This telephone is connected to the answering machine.

If you wish, please speak a message after the beep.J, etc.) will be played and sent. (Second control means) After sending the response message, the calling side instructs to start recording the message (voice signal) sent via the line 2. At the same time, the open/close relay switch L3 is closed to reconnect the CNG signal detection circuit 7 to the line 2. Until the message from the calling party is recorded,
The detection signal from the CNG signal detection circuit 7 is monitored. Here, before the recording of the message from the calling party is finished, the CN
When the detection signal from the G signal detection circuit 7 recognizes that the CNG signal has been sent via the line 2, the changeover relay switch L2 is returned from the normally open side to the normally closed side and the line 2 is switched on.
The facsimile section 5 is switched and connected to. Then, as mentioned above, the facsimile section 5 is commanded to start automatic reception, and once the information sent from the calling party via line 2 has been received, line 2 is disconnected. Finish the process.

0 On the other hand, when the message recording is completed without any CNG signal being detected, the changeover relay switch L1 is returned from the normally open side to the normally closed side, and the telephone section 3 is connected to the line 2.
Line 2 is disconnected to end this process.

In this embodiment configured in this way, the normal line 2
A telephone section 3 is connected to. In this state, when an incoming call signal is sent via the line 2, in response to this incoming signal being detected twice by the incoming signal detection circuit 4, the answering machine section 6 and the CNG signal are sent to the line 2. A detection circuit 7 is connected. Here, the answering machine section 6 is prohibited from playing or sending out the response message for 3 seconds, and
The CNG signal detection operation in the NG signal detection circuit 7 becomes effective.

Generally, the CNG signal is sent from the calling side facsimile several times at 3 second intervals prior to transmitting information. Therefore, by checking the presence or absence of a CNG signal for 3 seconds after the line is connected, it is possible to accurately identify whether the calling party is a facsimile or a telephone.

If a CNG signal is detected within 3 seconds after the line is connected, the facsimile section 5 is connected to the line 2. As a result, the information sent from the calling side facsimile via the line 2 is automatically received and printed out on recording paper by the facsimile unit 5. After automatic reception ends, line 2
is reconnected to the telephone section 3.

On the other hand, if a CNG signal is not detected within 3 seconds after the line is connected, a predetermined response message is reproduced from the answering machine section 6 and transmitted to the calling party through the line 2. Thereafter, recording in the answering machine section 6 is started. This records the message sent from the calling party's phone.

After the recording is completed, the line 2 is reconnected to the telephone section 3.

Note that if the CNG signal is received by the CNG signal detection circuit 7 in the message recording state, the line 2 is immediately switched to the facsimile section 5, and the facsimile section 5
automatic reception will start.

] 2 As described above, according to this embodiment, the C
Since the detection operation in the NG signal detection circuit 7 is enabled and the reproduction and output of response messages in the answering machine 6 is prohibited during that time, the standard frequency of the CNG signal (1100
) can be prevented from erroneously detecting a response message as a CNG signal and switching the facsimile unit 5 to automatic reception mode. As a result, even if the calling party is a telephone, it will not malfunction as a facsimile, and the reliability of the device can be improved. Moreover, since it is possible to use a response message that includes an audio signal close to the standard frequency of the CNG signal, the clarity of the response message is not impaired.

Further, since most CNG signals can be detected within 3 seconds after receiving a call, automatic reception of information can be performed immediately if the calling party uses a facsimile. Moreover, the first C
Even if there is a failure to detect the CNG signal during the valid period of the NG signal detection circuit 6, the failure to detect the CNG signal will not occur because the CNG signal detection circuit 6 is enabled again at the time of recording. If the calling party is using a telephone, 3.
There will be no response to the calling party for a few seconds, but if this is the case, the user on the calling party will not feel uncomfortable and will not be a particular problem.

Note that the 7° axis device according to the present invention is not limited to the above embodiment, and may be modified as shown in FIG. 3, for example. Note that parts that are the same as those in FIG. 1 are designated by the symbol "-". In the circuit shown in No. 3141, the detection signal from the CNG signal detection circuit 7 is given to the control section 8 via the AND gate 9. By opening the AND gate 9 only when recording , the same effect as in the previous embodiment can be obtained. In this case, the open/close relay switch L3 is omitted.

In addition, in the above embodiment, the reproduction and output of a response message on the answering machine section 6 is prohibited for 3 seconds after receiving a call.
Although the detection operation in the G signal detection circuit 7 was made effective, the time is not limited to this three seconds. however,
Considering the CNG signal detection accuracy of 4 degrees and the no-response time for the calling user, approximately 3 seconds is considered to be optimal.

[Effects of the Invention] As described in detail above, according to the present invention, it is possible to prevent the CNG signal detection circuit from malfunctioning in which the response message is detected as a CNG signal without impairing the clarity of the response message, and the calling party can use the telephone However, it is possible to provide a facsimile device with an answering machine function that can further improve reliability by eliminating the problem of switching to the facsimile function despite the above.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing one embodiment of the present invention, FIG. 2 is a flow chart showing the main operations of the same embodiment, and FIG. 3 is a block diagram showing another embodiment of the present invention. 1... Transmission/reception section, 2... Line, 3... Telephone section, 4
... Incoming call detection circuit, 5... Facsimile section, 6...
・Answering machine section, 7... CNG signal detection circuit, 8...
-Control unit, 9...AND gate, Ll, L2...changeover relay switch 5 switch, 3...open/close relay switch.

Claims (1)

[Scope of Claims] A facsimile unit that reads information on a document and transmits it via a line, and prints out information received via the line; and a facsimile unit that sends out a response message via the line and transmits the information via the line. a non-voice terminal identification signal detection circuit that detects a non-voice terminal identification signal sent prior to the image information; and a non-voice terminal identification signal detection circuit that detects a non-voice terminal identification signal sent prior to the image information; Connecting a terminal identification signal detection circuit to the line, prohibiting the answering machine from outputting a response message for several seconds, and enabling the detection operation of the non-voice terminal identification signal by the non-voice terminal identification signal detection circuit. a first control means to switch and connect the line to the facsimile section if the first control means detects a non-voice terminal identification signal while the non-voice terminal identification signal detection circuit is enabled; and second control means for outputting a response message from the answering machine section if the non-voice terminal identification signal is not detected.