JPH02295340A - Automatic answering telephone set with automatic facsimile switching function - Google Patents

Abstract

PURPOSE:To judge the information from a caller without fail and to automatically switch an automatic answer for recording or facsimile reception by detecting that a telephone circuit in a facsimile equipment is closed and switching the connection of the telephone circuit to the facsimile equipment. CONSTITUTION:As constituting parts to present the function of automatic facsimile switching, a calling tone signal detecting circuit 10 to be connected to a speech network 4 and to detect the calling tone of an automatic call originating facsimile, timer circuit 11, constant voltage generating circuit 12, call signal generating circuit 13 to originate the call signals of 16Hz and 210Vp-p and a line switching circuit 14 to switch the connection of the facsimile equipment to telephone circuits L1 and L2 are provided. Further, a manual switch is provided in parallel with the output line of the calling tone signal detecting circuit 10 in order to switch the telephone circuits L1 and L2 to the facsimile equipment when a user is at home. Thus, the information of the caller is judged without fail and either the automatic answer for recording or facsimile communication can be executed.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to telephones, which have recently become more and more multi-functional, and in particular is capable of automatically switching between facsimile communication and answering machine recording even when the user is away from home. This invention relates to an answering machine with an automatic facsimile switching function.

[Prior Art] Generally speaking, a method of providing the functions of both an answering machine and a facsimile machine in one place is to use two telephone lines, one of which is dedicated to the facsimile machine. The other line is used exclusively for the answering machine. Alternatively, you can use a single telephone line to switch between an answering machine and a facsimile machine using a manual switch. or,
A method of connecting an answering machine and a facsimile machine to one telephone line via an automatic telephone/facsimile switching device.

Furthermore, there is a method of using an integrated telephone that combines an answering machine and a facsimile machine. There are four methods listed above. [Problems to be Solved by the Invention] However, the above-mentioned four conventional types that function as both an answering machine and a facsimile machine have various problems.

First of all, the method of using two telephone lines not only doubles the telephone installation fee and monthly basic telephone charge compared to the method of using only one line, but also separates the telephone numbers. For example, even if a call was accidentally received by a fax machine or a fax was sent to a telephone, there was no flexibility at all because each line was dedicated to the other. Next, the method of using a manual changeover switch has no problem when the user is at home, but when the user is away, the switch can only be set to one of the two, so it cannot perform either function.

In addition to an answering machine and a facsimile machine, the method of using an automatic telephone/facsimile switching device requires purchasing this automatic switching device separately from the telephone and facsimile machine, which is expensive and requires storage. Additional space will also be required. Finally, because of the large external dimensions of an all-in-one telephone, it is not suitable to be installed on a desk, so it is often uneconomical to purchase and install a separate telephone for the desk. there were. Therefore, in the present invention, by providing an extremely convenient facsimile automatic switching function to an answering machine, there is no need to incur unnecessary costs.
The objective is to provide an answering machine that can reliably determine the caller's business and record the caller's answering machine or send a facsimile message even when the caller is not at home. [Means for Solving the Problems] The above-mentioned problems include an incoming call detection circuit for detecting a ringing ring signal sent from a central office exchange to notify a telephone of an incoming call, and closing the telephone line; a calling tone signal detection circuit for detecting a calling tone signal of an automatically originating facsimile that arrives following the bell signal and transmitting a facsimile start signal; A bell signal generation circuit that sends out a bell signal to the facsimile machine, and a line switch that detects that the telephone line in the facsimile machine is closed by the bell signal that the bell signal generation circuit sends out, and then switches and connects the telephone line to the facsimile machine. This problem is solved by an answering machine with an automatic facsimile switching function, which is equipped with a circuit. [Example] Hereinafter, an example of the present invention will be described based on the drawings. 1 to 3 show one embodiment of the present invention, in which FIG. 1 is a block circuit diagram and FIGS. 2 to 4 are flow charts showing the operation of an answering machine with an automatic facsimile switching function.

1 is a voltage detection circuit that detects whether telephone lines L1 and L2 are closed or opened; 2 is a branch detection circuit that detects an incoming call from a branch-connected facsimile machine; and 3 is a telephone line closure circuit;
and a transistor having a switch function to open the
4 is a speech network that controls the input/output of audio signals, and 5 is a telephone control circuit including a dial IC and the like. As a component that performs the answering machine function,
Telephone line L. , L, and a voice detection circuit 6 connected to the speech network 4.
, a response message recording and reproducing circuit 8 and a business matter recording and reproducing circuit 9. Additionally, the components that perform the function of automatic facsimile switching include a calling tone signal detection circuit 10 connected to the speech network 4 and detecting a calling tone signal of an automatically originating facsimile, a timer circuit 11, a monitoring voltage generation circuit 12, and a bell signal generation circuit. circuit 1
3, and a line switching circuit 14 for switching and connecting the telephone lines Ll and LZ to a branch-connected facsimile machine. Furthermore, when you are at home, telephone lines L1, L. A manual switch 15 is provided in parallel with the output line of the calling tone signal detection circuit 10 for switching the call tone signal to a facsimile machine.

With the above configuration, the operation sequence of the answering machine with automatic facsimile switching function of the present invention will be described.

First, the home/absence switch 6 in the incoming bell detection circuit
When a is assumed to be "at home," the incoming bell detection circuit 6 does not operate even when an incoming call is received, and outputs an incoming bell sound, and when the handset is picked up, it becomes a talking state.Then, the calling party automatically makes an outgoing facsimile call. When a tone signal of 1100 Hz with a period of 0.5 seconds on and 3 seconds off is sent, the calling tone signal detection circuit 10 is activated and the bell signal generation circuit l3 is activated.
to drive. Here, as a power source for this bell signal generation circuit 13, an AC voltage of more than 10 V from an AC adapter (not shown) connected as a driving power source for the telephone of this embodiment is rectified, and a boosted DC voltage is used. Constant voltage generation circuit 1
Use a DC voltage of about 50μ obtained by stabilizing it with 2. Next, the bell signal generation circuit 13 converts this approximately 50V DC voltage to approximately 150VP-P by the amplifier circuit 13a in the bell signal generation circuit 13, and then converts it to 16Hz, 150Vp-P.
It is transmitted as a bell signal of p. This bell signal is then sent to a branch-connected facsimile machine (not shown) to receive a facsimile call. When the facsimile machine receives a call, the line switching circuit 14 connects the facsimile machine to the telephone line L1L2, and then the branch detection circuit 2 turns off the transistor 3 and connects the answering machine to the telephone line L2. , L, is released.

When the facsimile communication is completed, the telephone line is opened, and upon detection of the open voltage by the voltage detection circuit 1, the line switching circuit 14 disconnects the facsimile machine from the telephone lines L1, L, thereby completing the series of sequences. Also, does the calling party's facsimile send the automatic transmission mentioned above? In the case of manual transmission instead, the called party confirms the facsimile communication and then turns on the manual switch 15, thereby activating the bell signal generation circuit and thereafter switching to facsimile communication in the same manner as described above.

Next, when an incoming call is received while the at-home/absent switch 6a is in the "absent" state, the incoming bell detection circuit 6 turns on the transistor 3 to close the telephone lines L2 and L2 in a loop within the telephone.

Subsequently, the response message recording and reproducing circuit 8 sends out the prerecorded response message. When a calling tone of an automatically transmitted facsimile is received during or after sending the response message, the calling tone signal detection circuit 10 causes the bell signal generation circuit 13 to unconditionally cause the facsimile machine to receive the call and switch to facsimile communication.

In addition, when the caller manually sends a facsimile, the timer circuit 11, which operates after the end of the response message described above, determines that the no-voice input time is longer than the set time and sends the bell signal generator circuit 13. and switch to facsimile communication.

Further, when the caller records the message, the timer circuit 11 maintains the recording mode of the message recording/reproducing circuit 9 while the voice input continues.

In addition to the above operation sequence for incoming calls, in the telephone of this embodiment, when transmitting from a branch-connected facsimile machine-side telephone, when the handset of this branch telephone is off-hook, the line switching circuit 14 is activated. Connect the facsimile machine to telephone lines L1 and L2. Then, when a dial pulse is transmitted from the branch telephone, the voltage detection circuit 1 detects an open circuit voltage in the dial pulse and attempts to disconnect the facsimile machine from the telephone line L1, L. In this case, dialing cannot be made from the branch telephone, so the cathode side of the diode 6b in the nursing bell detection circuit 6 is connected in parallel in the middle of the signal line from the voltage detection circuit 1 to the line switching circuit 14. By connecting, the signal of the voltage detection circuit 1 is canceled and a call can be made from the branch telephone.

[Effects of the Invention] As described in detail above, according to the answering machine with automatic facsimile switching function of the present invention, it is equipped with a calling tone signal detection circuit, a timer circuit, a bell signal generation circuit, and a line switching circuit. Automatic facsimile switching that reliably determines the caller's business and automatically switches between answering machine recording and facsimile reception, without the need for extra costs such as purchasing an automatic switching device, regardless of whether the caller is at home or away. It is possible to perform the functions. Furthermore, since the answering machine of the present invention is equipped with a bell signal generation circuit that emits a bell signal equivalent to the incoming bell signal transmitted from the telephone exchange, it can be used as a branch-connected facsimile machine. You can use it without any problem even if it is a model. According to the answering machine of the present invention, 161h 1
By installing an amplifier circuit in the bell signal generation circuit that transmits the 50 Vp-p bell signal and using an AC adapter with a low supply voltage, there is no need for a power transformer that is large in volume and weight inside the phone, which makes it lightweight. It became possible to provide a compact answering machine with an automatic facsimile switching function.

Furthermore, by installing a diode in the incoming bell detection circuit that cancels unnecessary signals from the voltage detection circuit, it is now possible to make dial calls from branch telephones without the need for extra effort such as changing switches. .

[Brief explanation of the drawing]

Fig. 1 is a block circuit diagram of an answering machine according to the present invention;
4 through 4 are flowcharts showing the operation of the answering machine of the present invention. 1... Voltage detection circuit 6... Incoming bell detection circuit 6
a... Diode 10... Calling tone signal detection circuit 11... Timer circuit 13...
Bell signal generation circuit 13a...Amplification circuit 14.
...Line switching circuit 15...Manual switch section dimensions

Claims (3)

[Claims] (1) An incoming bell detection circuit that detects a ringing bell signal sent from a central office switchboard to notify the telephone of an incoming call and closes the telephone line, and an automatic outgoing facsimile that receives a call following the bell signal. a calling tone signal detection circuit for detecting a calling tone signal and transmitting a facsimile start signal; and a bell signal generation circuit for transmitting a bell signal to a facsimile machine branch-connected to the telephone set upon input of the facsimile start signal. , an automatic facsimile machine comprising a line switching circuit that detects that a telephone line in the facsimile machine is closed by a bell signal transmitted by the bell signal generation circuit, and switches and connects the telephone line to the facsimile machine. Answering machine with switching function. (2) The answering machine with facsimile automatic switching function according to claim 1, wherein the bell signal generation circuit includes a built-in voltage boosting means for boosting the power supply voltage supplied from the external power adapter to a predetermined voltage for transmitting the bell signal. telephone. (3) An answering machine with an automatic facsimile switching function according to claim 1, further comprising switch means for transmitting a facsimile start signal when manually operated, in parallel with the output line of the calling tone signal detection circuit.