JPS63111747A - Caller selection circuit for telephone system - Google Patents

Abstract

PURPOSE:To prevent mischievous telephone call or the like even without a pass word by using a telephone number stored in an automatic dial memory as the pass word for selecting a caller. CONSTITUTION:With a selector switch 4 in the operating position, no call tone is outputted from a speaker 7 even with an incoming call. With an incoming call in this state, a call signal is applied to a control circuit 19 via the selector switch 4. Thus, the control circuit 19 operates a book control circuit 10 to close a telephone line and to urge a caller to send its own telephone number via a message sending circuit 23. In sending its own telephone number from the caller in response thereto, the control circuit 19 collates it with an automatic dial telephone number stored in a memory circuit 26, and a voice synthesis circuit 29 is activated in case of the coincidence only and the called party is called under the name corresponding to the telephone number.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to telephone equipment, and more particularly to a caller selection circuit that protects the owner of a single call against prank calls and mistaken calls.

(b) Conventional technology When a caller makes a call, a ring tone sounds in response to the ringing signal coming from the telephone line, and by hearing this ring tone, the caller recognizes that there is an incoming call. The telephone device is configured.

With a telephone device having such a configuration, the owner of the telephone will be called even in the case of not only a prank call but also a mistaken call, which is extremely unpleasant. As a way to solve this problem, a telephone device has been developed that is configured to ring only when a person who knows the PIN number calls. -1166
There is one disclosed in Publication No. 8. Furthermore, when making a call, manipulating the area code and the other party's number is not only inconvenient, but also involves the problem of entering the wrong number. Telephone devices equipped with a device called an automatic dialing device, which allows calls to be made by dialing ℃ with the simple operation of operating two operation buttons, are widely used. 30
There is one disclosed in Publication No. 601.

(C) Problems to be Solved by the Invention In the technique described above in which a caller is selected using a PIN number, the PIN number is specially set by the telephone owner. There is a problem in that it is necessary to inform the caller and the caller forgets the PIN number.

The present invention seeks to provide a caller selection circuit that solves this problem.

(2) Means for Solving the Problems The caller selection circuit of the present invention is configured such that the number corresponding to the DTMF signal sent from the caller after an incoming call operation matches the telephone number stored in the memory circuit. At the same time, the name of the person corresponding to the telephone number stored in the memory circuit is emitted by a voice synthesis circuit.

(*) Function The present invention uses a telephone number stored in a memory circuit provided for automatic dialing as a PIN number for selecting a caller, and also inputs the caller's name by voice synthesis. It was designed to emit sound.

(f) Embodiment The illustrated circuit is an embodiment of the caller selection circuit of the present invention. In the figure, (1) is a connection terminal with a telephone line;
(2> is the first rectifier that rectifies the calling signal coming from the telephone line.
a diode bridge circuit; (3) a first ringing signal generating circuit that outputs a ringing signal in response to the ringing signal rectified by the diode bridge circuit (2); and (4) a first ringing signal generating circuit; This is a selection switch for selecting whether to activate or deactivate the caller selection operation, and the illustrated state is the inactive state. (base) is a transformer (7) to which a calling signal from the first calling signal generation circuit (3) is applied to the first winding (6) when the selection switch (4) is in the inoperative position;
is a speaker that emits a calling signal, etc., and is connected as a load to the second winding (8) constituting the transformer (base). (9) is a second diode bridge circuit provided to determine the connection polarity with the telephone line;
0) is a hook control circuit that controls the closing operation of the telephone line;
(11) is a telephone circuit called a speech network, to which a handset (12) is connected. (13)
(14) is the dial operation button (14) which is operated during dial operation and memory circuit storage operation.
Dial signal generation circuits (15), (16), and (1) that output dial signals corresponding to the numbers constituting 3).
7) are first, second, and third operation switches that are closed by operating the automatic dial operation button, respectively; (18);
) is a memory circuit in which a telephone number for performing an automatic dialing operation and the name of the person at that telephone number is stored; (19)
) are the respective operation switches (15), (16),
(17) and a control circuit (20) that controls the operation of storing the telephone number and name in the memory circuit (18) and the operation of calling the telephone number from the memory circuit (18) by operating the dial operation button (13); The first calling signal generation circuit (
3) A control terminal to which the signal outputted from the selection switch (4) is applied when the selection switch (4) is in the selection operation position, and a signal from the first calling signal generation circuit (3) is applied to the control terminal (20). When this is done, each operation by the control circuit (19) is started. (21) is a hook operation control signal output terminal that is provided in the control circuit (19) and outputs a signal for controlling the operation of the hook control circuit (10), and a first terminal is connected to the control terminal (20).
It is configured to output a signal for closing the telephone line when a signal from the calling signal generating circuit (3) is applied.

(22) is a drive signal that is output after the telephone line is closed by the operation of the hook control circuit (10) based on the signal output from the hook operation control signal output terminal (21) of the control circuit (19). drive signal output terminal, (23)
is a response message sending circuit that becomes active when a drive signal is output to the drive signal output terminal (22), and has the function of sending a message to the caller to prompt him or her to send a PIN number. . (24) is an output terminal which is provided in the control circuit (19) and outputs the telephone number that has been called out from the memory circuit (18) during automatic dialing operation, and which is connected to the dial signal generation circuit (14). It is connected. (25) is a DTMF signal receiving circuit that receives a signal transmitted as a PIN number from a caller, that is, a DTMF signal, and a control circuit (19) that receives a coded signal.
) is connected to output. (26) is the above D
A reception number memory circuit (27) in which the number received by the TMF signal reception circuit (25) is stored is activated after the telephone line is closed by the hook control circuit (10) and Memory circuit (18)
A number matching circuit that matches the telephone number stored in the received number memory circuit (26) with the number stored in the received number memory circuit (26), and outputs an H (high) level signal when the numbers match. It is equipped with a terminal (28). In such a circuit, the memory circuit (18) stores the subscriber number, city code, and area code, but the verification operation by the number verification circuit (27) is performed, for example, on the subscriber number, that is, the last four digits. This is done by number. (29) is a speech synthesis circuit which becomes operational when an H level signal is output to the output terminal (28) of the number verification circuit (27) and whose operation is controlled by the control circuit (19); A name is synthesized based on the signals stored in the memory circuit (18), and for example, a synthesized sound "J is calling from Mr. ○○○○" is output at a predetermined period from the output terminal (30). (31) is an amplifier circuit which receives the synthesized sound outputted from the speech synthesis circuit (29) and amplifies the signal, and its output signal is used to form the transformer (base). (33) is in an operating state when an H level signal is output to the output terminal (28) of the number verification circuit (27). and a second ringing signal generating circuit which outputs a ringing signal different from the ringing signal outputted from the first ringing signal generating circuit (3), and the output signal is sent to the telephone line through the telephone circuit (11). In this circuit configuration, if the number sent by the caller and the telephone number stored in the memory circuit (18) do not match, the hook control is activated after a predetermined time. The telephone line is configured to be disconnected by the operation of the circuit (10).Furthermore, when a calling operation is being performed using a synthesized voice output from the voice synthesis circuit (29), that is, the number matching circuit ( 27) When the handset (12) is removed from the telephone while the calling operation is being performed in conjunction with the matching operation of numbers, the voice synthesis circuit (29), the second ringing signal generation circuit (33), etc. are in an inoperative state. The hook control circuit (10
) After the incoming call operation, for example, when the caller hangs up while a ringing operation is being performed using a synthesized voice that is an output signal of the voice synthesis circuit (29), a circuit (not shown) detects a change in the signal on the telephone line. ) is configured such that the operation of disconnecting the telephone line and restoring each circuit are performed by the operation of the control circuit (19). The caller selection circuit of the present invention is constructed as described above, and the operation of this circuit will now be described.

First, the operation of storing telephone numbers and names in the memory circuit (18) will be explained. The storage operation in the memory circuit (18) is performed by switching the first . Second and third operation switches (15), (1
6) and (17), and also by operating the dial operation button (13) corresponding to the telephone number that you wish to memorize. ) By switching the function of each button, for example, 5
This is done by outputting a signal corresponding to the o sound. Further, the response message sending circuit (23) has a built-in message memory circuit in which a response message is stored, and the voice of the owner of the telephone is memorized by the message storage operation. For example, such a response message might be, "Yes, this is ○○.

Please send your phone number. ” is memorized.

As described above, the memory circuit (18) stores the telephone number and name and the response message.Next, the operation as a telephone device will be explained. First, the operation when making a phone call will be explained. When making a call to a person whose telephone number is not stored in the memory circuit (18), the call is made by removing the handset (12) from the telephone and operating the dial operation button (13). When the handset (12) is removed from the telephone, a hook switch (not shown) is switched, as is well known, to close the telephone line. In such a state, when a dial operation button (13) is operated, a dial signal corresponding to the button is output from the dial signal generation circuit (14) and sent to the telephone line through the telephone circuit (11). The operation of making a call by operating the dial operation button (13) is performed in this manner.Next, the case of making a call by automatic dialing operation will be explained. Such an operation is carried out by removing the handset (12) from the telephone and pressing the operation switch (12) provided corresponding to the memory in which the telephone number of the person to call is stored.
5), (16), and (17) are closed by operating the automatic dial operation button.

For example, when the first operation switch (15) is pressed and closed, the telephone number stored in the memory corresponding to the first operation switch (15) among the telephone numbers stored in the memory circuit (18) is changed. is called and applied to the dial signal generation circuit (14) through the control circuit (19). As a result, a dial signal corresponding to the number is output from the dial signal generating circuit (14), and a dial signal corresponding to the number is output from the dial signal generating circuit (14),
1) to the telephone line. When such an operation is performed, the owner of the telephone calls the person whose telephone number is stored in the memory circuit (18) by means of an automatic dialing operation. I can do it.

As mentioned above, the operation when making a phone call is performed, but
Next, the operation when a caller receives a call will be explained. First, a description will be given of a case where the selection switch (4) for selecting operation/inoperation of the caller selection operation is in the non-operation position shown, that is, a case where the telephone operates as a normal telephone device. When a calling signal arrives from the telephone line in the illustrated state, the calling signal is applied to the first calling signal generating circuit (3) through the first diode bridge circuit (2).

As a result, the first calling signal generating circuit (3) becomes operational, and an electronic calling signal is output to its output terminal. The calling signal outputted from the first calling signal generating circuit (3>) is passed through the selection switch (4) to the transformer (
5) is applied to the first winding (6). As a result, the speaker (7) is configured as well as the transceiver (7).
A ringing signal is induced in the second winding (8) connected as a load, and the ringing signal is emitted from the speaker (7) as a ringing tone. Therefore, the owner of the telephone becomes aware of the incoming call, and by disconnecting the handset (12) from the telephone, the telephone line is closed and the caller is contacted. I can do it.

As described above, operations are carried out when operating as a normal telephone device. As described above, when a calling signal arrives from the telephone line when the selection switch (4) is in the operating position, the first calling signal generating circuit (3)
A calling signal is output. In such a state, the signal path to the first winding (6) constituting the transformer is cut off by switching the selection switch (4), so the ring tone will not be emitted from the speaker (7). do not have. The calling signal output from the first calling signal generating circuit (3) is applied to the control terminal (20) provided in the control circuit (19) through the selection switch (4), and the calling signal is applied to the control terminal (20) provided in the control circuit (19).
9) is started. The control circuit (19
) When a calling signal is applied to the control terminal (20) of the control circuit (19), a signal for performing the closing operation is output to the hook operation control signal output terminal (21) provided in the control circuit (19), and the hook control is completed. The circuit (10) performs a telephone line closing operation. After such a closing operation is performed, the control circuit (
A drive signal is outputted to the drive signal output terminal (22) provided in 19) and applied to the response message sending circuit (23).When the drive signal is applied to the response message sending circuit (23), the response is Message sending circuit (23)
becomes operational, the message stored in the message memory circuit, that is, the message "Yes, this is ○○. Please send your phone number" is output, and the telephone circuit ( 11) to the calling party. When a caller who hears such a message operates a dial button corresponding to a telephone number, a signal corresponding to each button, that is, a DTMF signal, is sent to the telephone line. DTMF signal receiving circuit (2) through the 2-guiode bridge circuit (9), the hook control circuit (10) and the telephone circuit (11).
5) is applied. When the DTMF signal sent from the calling party is applied to the DTMF signal receiving circuit (25), the D
A coded signal corresponding to the reception number is output from the TMF signal receiving circuit (25) and input to the control circuit (19). The signal input to the control circuit (19) is passed through the control circuit (19) to the reception number memory circuit (26).
) and stored in the reception number memory circuit (26). Then, the number verification circuit (27) performs a verification operation between the number stored in the received number memory circuit (26>) and the telephone number stored in the memory circuit (18), and if the numbers match, An H level signal is output to the output terminal (28) of the number matching circuit (27).The output terminal (28) of the number matching circuit (27)
When an H level signal is output to the voice synthesis circuit (29)
becomes operational, and based on the name stored in the memory circuit (18) and corresponding to the matching telephone number, a synthesized voice, ie, "Mr. ○○○○ is calling." is output to the output terminal (30). A signal is output at a predetermined period. The synthesized sound output to the output terminal (30) is sent to the amplifier circuit (31).
), the signal is amplified, and then applied to the third winding (32) constituting the transformer. Therefore, a synthesized sound is induced in the second winding (8) that forms the transformer and is connected to the speaker (7) as a load, and is emitted by the speaker (7). Further, when an H level signal is output to the output terminal (28) of the number matching circuit (27), the second ringing signal generation circuit (33) becomes operational, and the ringing signal that is the output signal is sent to the telephone circuit. (1
1), the calling party can recognize that the calling operation is being performed after the incoming call operation. As a result of this operation, the owner of the telephone is able to recognize that there is a call through the synthesized sound emitted from the speaker (7), and also to recognize who is the caller. I can do it. After performing such recognition, when the telephone owner removes the handset (12) from the telephone, the number verification circuit (27), the voice synthesis circuit (29) and the second ring signal generation circuit (33) become inactive. At the same time, a conversation with the calling party is started. In this way, when the number sent by the caller and the telephone number stored in the memory circuit (18) match, the voice synthesis circuit (2
A calling operation is performed using the synthesized voice output from 9), but if there is no matching number, the number matching circuit 2
Since no H level signal is output to the output terminal (28) of 7), the above-described calling operation is not performed.

Then, after a predetermined period of time has elapsed, a signal for unclosing the telephone line is output to the hook operation control signal output terminal (21) provided in the control circuit (19), and the hook control circuit (
10) is performed. In this way, if you receive a call from someone whose phone number does not match the phone number stored in the memory circuit (18), the ring tone cannot be emitted from the speaker (7), resulting in a prank call or a mistaken call. You can get rid of the phone.

In this embodiment, a case has been described in which three telephone numbers are stored for automatic dialing, but the number is not limited to three. In addition, by operating a single button, it is compared with a telephone number stored in a memory circuit provided for dialing, but speed dialing, that is, special operation of dial operation button (13), In a telephone device which calls up a telephone number stored in a memory circuit by performing the above operations, it is also possible to perform verification with the telephone number completely stored in the memory circuit. In addition, only the synthesized sound output from the speech synthesis circuit (29) is sent to the speaker (7) at a predetermined period.
However, the synthesized sound from the voice synthesis circuit (29) and the call signal from the second call signal generation circuit (33) are alternately emitted from the speaker (7) by the function of a switch circuit, etc. It is also possible to do so. Although the response message is stored in the memory circuit as the response message sending circuit (23), it is also possible to use a table reader.

(G) Effects of the Invention The caller selection circuit of the present invention emits a ringing tone when the number corresponding to the DTMF signal transmitted from the caller after receiving a call matches the number stored in the memory circuit. This not only protects the owner of the phone from prank calls and mistaken calls, but also allows the caller selection PIN to be stored in the memory circuit provided for automatic dialing. This has the advantage that not only does the owner of the phone not have to tell a specific person his/her PIN number, but it also solves the problem of the caller forgetting their PIN number. are doing. In addition, the present invention is capable of generating a synthesized sound by a voice synthesis circuit, that is, a calling operation, which occurs when a number corresponding to a DTMF signal transmitted from a calling party matches a telephone number stored in a memory circuit after an incoming call operation. Since the call is made based on the person's name, it is possible to recognize the caller before answering the phone, which is very convenient.

BRIEF DESCRIPTION OF THE DRAWINGS The illustrated circuit is one embodiment of the caller selection circuit of the present invention. Explanation of main drawing numbers (3)...First ringing signal generation circuit, (4)...Selection switch, (7)...Speaker, (10)...
Hook control circuit, (11)...Telephone circuit, (1
2)...Handset, (13)...Dial operation button,
(14)...Dial signal generation circuit, (15)
...First operation switch, (16)...Second operation switch, (17>...Third operation switch, (18)
...Memory circuit, (19) ...Control circuit, (2
3)...Response message sending circuit, (25)...
DTMF signal receiving circuit, (26)... Received number memory circuit, (27)... Number verification circuit, (29)
...Speech synthesis circuit, (33)...Second calling signal generation circuit.

Claims (1)

[Claims] (1) Equipped with an automatic dialing device that sends a dialing signal by calling a telephone number stored in a memory circuit, and a D that is sent by the caller after receiving a call.
In a telephone device equipped with a device that performs a calling operation when a number corresponding to a TMF signal and a password match, the telephone number stored in the memory circuit is used as the password, and the telephone number is stored in the memory circuit. A telephone device characterized in that a corresponding name is stored, and a calling operation in response to number matching is performed by synthesizing the name stored in the memory circuit with a speech synthesis circuit. Caller selection circuit.