JPH04183155A - Mischief call protecting device - Google Patents

Abstract

PURPOSE:To protect a mischief call from being connected to a telephone set by firstly catching a call line at the time incoming call, requesting the called party for inputting a password information, and collating a password information of the called party with a preset password information. CONSTITUTION:When detecting a call signal, a telephone set turns on an adapter response relay 16. Further, the telephone set actuates a voice synthesizer unit 18, sends the first and second messages to a called telephone set, and waits until the called telephone set sends a PB signal back to the called telephone set. When the PB signal is input in the called telephone set, the called telephone set collates the input PB signal with a password information registered in a RAM 28, and if they coincide with each other, the called telephone set generates a bell signal for proving the coincidence. On the contrary, if they do not coincide with each other, the called telephone set allows a secret code from the calling party to be input in the called telephone set up to twice, and if the password information inputted even twice by the called party do not satisfy a predetermined coincidence with a secret code registered in the called telephone set, the called telephone set turns off the adapter response relay 16 to disconnect the line.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a telephone prevention device for preventing mischief by telephone, and in particular to a versatile device that can be attached to an existing telephone package. Regarding.

[Conventional technology]

Conventionally, various devices have been proposed to prevent mischief by telephone. For example, devices have been proposed that, when a call is detected to be a prank call, press a specific switch to generate an impact sound to the other party, or to transmit the other party's voice in reverse. However, such a device must be placed in a talking state once, which becomes extremely troublesome if this happens frequently. Ultimately, such devices cannot be an effective countermeasure against prank calls.

In addition, many of the conventional prank call prevention devices are integrated into the phone, which makes the phone itself expensive. I had to buy a new phone.

Therefore, a device has been proposed that is configured separately from the main body of the telephone, that identifies whether or not it is a prank call based on a password, and removes the response to the prank call before the call becomes active. For example, Japanese Patent Application Laid-open No. 55-11668 discloses that by switching the incoming call status, the caller will emit an 8-tone tone only when the person who knows the secret number calls, and in other cases, it will function as an answering machine and the caller will or prevent being called,
It has been disclosed whether there is a +1 one-way system when making calls to protect the called party. However, in this method, in order to respond to the call sound and enter the talking state, it is necessary to operate a switch to change the incoming call state, which is extremely troublesome.

Further, Japanese Patent Application Laid-Open No. 61-66449 describes a telephone device that makes a buzzer sound only when a predetermined password is entered, thereby making it possible to identify whether or not the call is a prank call. However, in this publication, a ring tone is also generated from the telephone, which is still troublesome.

[Problem to be solved by the invention]

As mentioned above, a device that deals damage to the t1 hand after a call is made cannot be used as a countermeasure against prank calls, and a device that is integrated with the telephone is expensive. , and there was the problem that the phone you were currently using would be wasted, and those that were configured separately from the phone had problems with operability.

Therefore, this invention was made in view of the above points,
The purpose of the present invention is to provide an inexpensive and easy-to-use telephone prevention device that can reliably remove calls even before a call is made, can be configured as an adapter type separate from the telephone, and is inexpensive and has excellent operability. do.

[Means to solve the problem]

In order to achieve the above object, the present invention provides an incoming call detecting means for detecting an incoming call from a line and capturing the line in response to the incoming call, Message sending means for sending a message requesting input of password information to the telephone;
a detection means for detecting the password information input from the other party's telephone; a reference means for referencing the password information detected by the detection means with preset password information; The present invention is characterized by comprising a ring tone generating means for generating a ring tone corresponding to the password information when it is determined that the password information is correct.

[For production]

When receiving a call, the system seizes the line and sends a message requesting the other party to enter their PIN information, and when the other party inputs their PIN information in response, the second PIN information is preset. If the password information is determined to be correct, a different ring tone is generated corresponding to the password.

If you are using a telephone, you will not be able to connect to the line or telephone because you do not know the correct PIN number. You can also tell if someone is calling by listening to the ringtone.

〔Example〕

Hereinafter, one embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a block diagram showing an embodiment of the prank call prevention device of the present invention. This device can be connected to a telephone (not shown) as an adapter type.
A telephone line (not shown) is connected to terminal 1, and a telephone set is connected to terminal 2. In this embodiment, the telephone connected to terminal 2 may be a bushing telephone that generates a DTMF signal;
Any rotary telephone can be connected. terminal 1
A relay circuit 11 is inserted between the terminal 2 and the terminal 2. This relay circuit 11 is connected to the central processing unit (CPU) 1 while power is supplied to this device and this device is functioning normally.
The contact is switched to the a side by the adapter disconnection signal from 2. If power is not supplied to this device or if this device is not functioning properly, CPU1
In response to the adapter disconnection signal from 2, the relay circuit 11 is switched to the contact side, and in this case, the telephone line connected to terminal 1 is directly connected to the telephone connected to terminal 2 via relay circuit 11. , the telephone connected to terminal 2 operates as a normal telephone connected directly to the telephone line.

[Call signal detection circuit] 3 captures a call signal from the telephone line connected to terminal 1, and transmits the second call signal to the CPU.
Send on 12th.

The on/off hook detection circuit 14 receives a signal from the telephone connected to the terminal 2 via the relay circuit 1], and detects on-hook and off-hook of the handset of the telephone. The on/off hook detection circuit 14 sends an on/off hook signal to the CPU in response to the on-hook/off-hook detection.
Send on 12th.

The call inhibiting circuit 15 cuts off the calling signal coming from the telephone line connected to the terminal 1. As a result, the ringing signal coming from the telephone line connected to terminal 1 is not sent to the telephone connected to terminal 2, and as long as the relay circuit 11 or contact a is switched, the telephone connected to terminal 2 is not affected. will not ring. However, the voice signal from the telephone line connected to terminal 1 is transmitted to the telephone connected to terminal 2 via the telephone line prohibition circuit 15, on/off hook detection circuit 14, relay circuit 11, and terminal 2, In this state, terminal 2
When you take off-hook the handset of a telephone connected to the terminal, you will be connected to the telephone line connected to the terminal.

The adapter response relay 16 is turned on by an adapter response signal generated from the CPU 12 in response to the call signal from the call signal pressure detection circuit 13, and connects the telephone line connected to the terminal 1 and this device.

The hybrid circuit (HYB) 17 separates the transmitted and received signals of the second device and insulates it from the telephone line connected to the terminal 1.

The speech synthesis unit 18 stores a plurality of types of voice messages, and synthesizes one of the plurality of voice messages in response to voice switching commands from the CP and U. In this embodiment, the speech synthesis unit 1
The messages stored in No. 8 are the following six messages.

1st message: “Yes, sorry to have kept you waiting.” 2nd message: “After the signal tone, please enter the number of the person you want to call. If you do not know the number, please enter oqcJO. 3rd message Message “Tatai is currently calling. Please wait for a while." Fourth message: "I'm sorry. I can't answer the phone right now. 5th Message: I'll call you back, so please enter your phone number after the beep and press the pound key.

6th message "I'm away at the moment" The message output from the speech synthesis unit 18 is output to the telephone line via the hybrid circuit 17, the adapter response relay 16, and the terminal 1.

The DTMF signal receiving circuit 19 decodes the DTMF signal from the telephone line received via the terminal 1, the adapter response relay 16, and the hybrid circuit 17, and decodes the DTMF signal from the telephone line.
A PB multiplied signal corresponding to the signal is sent to CPUI2.

The bell signal generator 20 generates a plurality of types of bell signals, and outputs a desired bell signal in response to a bell ll, lj change command from the CPU 12. The second bell signal is sent to the speaker 23 via the volume control volume 21 and the amplifier 22.
added to and pronounced. In this embodiment, there are three types of bell signals generated by the bell signal generator 20, and these three types of bell signals are the numbers input from the other party (
PIN number) is supported. Note that the bell signal generator 2
The plurality of bell signals generated from 0 are at least mutually distinguishable, and for example, bell signals that differ in at least one of tone color, pitch, volume, and generation period are used.

The monitor switching relay 24 is driven by a monitor relay switching signal from the CPU 12.
is turned on, the audio signal from the telephone line is sent to terminal 1,
Adapter response relay] 6, hybrid circuit 17, monitor switching relay 24, volume adjustment volume 21, amplifier 2
2 to the speaker 23, and the speaker 23 generates sound. In this case, the bell switching command from the CPU 2 is stopped, and the other party's voice is emitted from the speaker 23 instead of the bell sound.

The key switch 25 includes various key switches of this device. As shown in FIG. 2, this device has an identification key 25a, an absent key 25b1, a password key 25C, an up key 25d, a down key 25e, a clear key 25f, and a monitor key 25g. It can be done.

Here, the identification key 25a is used to set the "identification mode" which will be described in detail later, and when the second identification key 25a is pressed, it becomes "identification mode", and when this identification key 2'5a is pressed again, it is set to "identification mode". "identification mode" is canceled. Also, absent key 2
Reference numeral 5b is for setting the "absent mode" which will be described in detail later. When the absent key 25b is pressed, the "absent mode" is set, and when the absent key 25b is pressed again, the "absent mode" is canceled. In addition, if both "identification mode" and "absentee mote" are canceled, it will become "normal mode J" which will be explained later.
When "Absent Mort J" is set, "Absent Mort J" is automatically canceled, and when "Absent Mort" is set during "Identification Mode", "Identification Mode" is automatically canceled.

The password key 25c is a key used to set a password. Further, the up key 25d is used to increment the numerical display on the LCD display section 27, and the down key 25e is used to decrement the numerical display on the LCD display section 27.

Further, the clear key 25f is used to clear the telephone number stored in this device.

The monitor key 25g is used to set a "monitor mode" in which the voice on the telephone line is output from the speaker 23. When you press this monitor key 25g, the CPU12
A monitor relay switching signal is sent from monitor relay 2.
4 is turned on to enter the "monitor mode", and when the monitor key 25g is pressed again, the monitor relay switching signal sent from the CPU disappears, the monitor relay 24 is turned off, and the "monitor mode" is canceled.

The LED display section 26 is for displaying the operation status of the second device, and the LED display section 26 has an identification light that lights up when "identification mode" is selected by operating the identification key 25a shown in FIG. It includes a lamp 27a, an absent lamp 27b that lights up when "absent mode" is selected by operating the absent key 25a, and a monitor lamp 27b that lights up when "monitor mode" is selected by operating the monitor key 25g. In addition, in FIG. 2, the identification lamp 27
The a1 absence lamp 27b and the monitor wrap 27b are arranged near the identification key 25a, the absence key 25b and the monitor key 25c, respectively, or they are incorporated inside the identification key 25a, the absence key 25b and the monitor key 25C, and the identification key 25a, Absence key 25b and monitor key 2
5c may be composed of a lamp key.

The LCD display section 27 is for displaying a password, a recorded telephone number, etc., and includes a number display section, a telephone number display section, and a password display section, as shown in FIG. Here,
The PIN number display section can display three PIN numbers: PIN 1, PIN 2, and PIN 3.

The RAM 28 stores registered password numbers, telephone numbers input from the first hand, and the like. This RAM28
is backed up by a battery 29.

In addition, in FIG. 2, the volume 25a is the speaker 23.
This volume 25a corresponds to the volume 25 shown in FIG. 1.

Next, the operation of this embodiment will be explained with reference to the flowcharts shown in FIGS. 3 to 7. Note that in the flowcharts of FIGS. 3 to 7, the circled portions with the same numbers are connected to each other.

In FIG. 3, when the power is turned on, predetermined initial processing is executed (step 101), and if this device is normal (step 101),
Step 102), turn on the adapter disconnection relay 11 (
(step 103). This enables the device to operate.

Next, it is checked whether the identification key is on, that is, whether the identification key 25a shown in FIG. 2 is on (step 104). Here, if the identification key is on, check whether the identification flag indicating "identification mode" is set (step IQ5.
), if the identification flag is not set, the identification flag 27 is set and the identification lamp 27 indicates that the identification mode is activated.
a (FIG. 2) is turned on (step 107). Also,
At this time, the absence flag indicating the "absence mode" is set and if the absence lamp 27b is lit, the absence flag is reset and the absence lamp 27b is turned off (step 108).

If it is determined in step 105 that the identification flag is being set, the identification flag is reset and the identification lamp 27a is turned off (step 106).

Next, it is checked whether the absentee key is on, that is, whether the absentee key 25b shown in FIG. 2 is on (step 109). At this point, if the absentee key is on, check whether the absentee flag indicating "absentee mote" is in progress (step 110), and if the absentee flag is not set, set the absentee flag;
The absentee lamp 27b indicating that the mode has become absentee mode is turned on (step 112). Also, at this time, an absence flag indicating "identification mode" is set, and the identification lamp 27a
If it is lit, the identification fluff is reset and the identification lamp 27a is turned off (step 113).

If it is determined in step 110 that the absence flag is being set, the absence flag is reset and the absence lamp 27b is turned off (step 111).

Next, the process moves to step 114 shown in FIG. 4, and it is checked whether the password key 25c shown in FIG. 2 is turned on. Here, if it is determined that the password key 25c is turned on, a predetermined password setting process is executed (step 11).
5). When the password key 25c is turned on, the three currently registered passwords are first displayed on the LCD display section 27 shown in FIG. When the up key 25d or the town key 25e is pressed in the state of 2, the numerical display of the password on the LCD display section 27 can be incremented or decremented. That is, first, a cursor (not shown) is located at the most significant digit of the password, and by pressing the up key 25d or town key 25e, the most significant digit can be incremented or decremented. When the most significant digit is determined by this, the password key 25c is pressed to move the cursor to the right digit.

Then, by pressing the up key 25d or the down key 25e, the number of this digit is determined. By repeating this operation, all digits of the password can be determined. In this state, when the password key 25C is pressed again, this password is registered in the RAM 28 shown in FIG.

When the password setting process is completed, it is next checked whether the A knob/down key is on, that is, whether the up key 25d or the down key 252 is on (step 116). Here, if the up/down key is on, the RAM28
A storage content display process for displaying the stored telephone number is executed (step 117). In this storage content display process, first, the up key 25d or the down key 25
When e is pressed, the oldest telephone number stored in the RAM 28 is displayed on the LCD display section 27.

Thereafter, when the down key 25e is pressed, the next memory is displayed on the LCD display section 27, and when the up key 25d is pressed, the previous memory is displayed on the LCD display section 27. If the clear key 25f is pressed here, only the memory currently displayed on the LCD display section 27 is erased, and the device enters a standby state. In addition, clear key 2
If a certain period of time elapses without pressing 5F, or if the handset of the telephone is turned off-hook and then on-hook, or if a call is received from another telephone, the telephone automatically enters the standby state.

Next, it is checked whether a calling signal is detected by the calling signal detection circuit 13 shown in FIG. 1 (step 118). Here, if no calling signal is detected, the process returns to step 102 in FIG. 3 and the above operations are repeated.

If it is determined in step 118 that a calling signal is detected, the adapter response relay 16 shown in FIG. The process moves to "identification mote" processing shown in (step 200).

If the absentee flag is set at this time, the mode shifts to the "absentee mode" shown in FIG. 7 (step 300).

In addition, if neither the identification flag nor the absence flag is in the control mode, the following operation is performed as a "normal mode": First, the bell signal generator 20 shown in FIG. 1 is driven to send out a bell signal. In step 122), the speaker 23 generates a bell sound. The bell tone at this time is, for example, a tone corresponding to the password 1.

In response to this bell tone, the handset of the telephone is turned off, and when this is detected by the on/off ring detection circuit shown in FIG. The ringing sound that was being heard is cut off (step 125) and the call becomes active. Thereafter, if the handset of the telephone goes off-hook and this is detected by the on/off-hook detection circuit 14 of FIG.
), the adapter response relay 16 is turned off (step 1
．． 27), return to step 102 in FIG.

Note that if the handset of the telephone is not turned off in response to the ring tone generated from the speaker 23, the ring tone generated from the speaker 23 is cut off by a command from the CPU 12 (step 124), and then the adapter responds. Relay 16 is turned off (step 127) and the process returns to step 102 of FIG.

Next, the operation in the "identification mode" will be explained with reference to the flowchart of FIG.

In the "identification mode", first, the speech synthesis unit 18 shown in FIG. 1 is driven, and the first message "Yes,
``Sorry to keep you waiting'' is sent to the other party's telephone (step 201).Next, after the second message ``Please enter the number of the person you want to call after the signal tone.'' If you do not know the number, please enter 0000" is sent to the other party's telephone (step 202). Then, the system waits for the PB double signal input from the 10-hand telephone.

When there is a PB double signal input from the other party's telephone (step 20B), it is checked against the PIN number registered in the RAM 28, and if the PIN number matches (step 205), a bell signal corresponding to the matched PIN number is generated. (Step 2
07). In this embodiment, three password numbers, password number 1, password number 2, and password number 3, can be set, and a different beep signal is generated corresponding to each password number.

Subsequently, the voice synthesis unit 18 is driven to send a third message "The phone is ringing now. Please wait for a while" to the other party's telephone (step 208). If off-hook is detected (step 210) within a predetermined period of time, within one minute in the embodiment (step 209) after this third message is selected, the ringtone is cut off (step 211) and the call is in progress. Thereafter, when the telephone handset goes on-hook (step 212), the adapter response relay 16 is turned off (step 218) and the process returns to step 102 of FIG.

If off-hook is not detected even after one minute has passed after sending the third message, the voice synthesis unit 18 will be activated and the fifth message "After that" will be called again. Please enter your telephone number and press the pound key" is sent to the other party's telephone (step 213).

Then, it waits for the PB double signal input from the other party's phone, and
If there is a B double signal input (step 215), a telephone number storage process is executed to store the telephone number input from the other party's telephone in the RAM 28 (step 217), and then the adapter response relay 16 is turned off (step 218). Return to step 102 in FIG. Note that if a telephone number is not input from the other party's telephone even after a predetermined period of time, 3 seconds in this embodiment has elapsed (step 216), the adapter response relay 16 is immediately turned off (step 218), and the step shown in FIG. Return to 102.

Note that if the PIN entered from the other party's telephone in step 205 does not match the PIN registered in the RAM 28, the PIN entered from the other party's telephone or 00.
00" (step 206). If the password input from the other party's telephone is "0000", the process moves to step 213.

If it is determined in step 206 that the PIN number entered from the other party's phone is not "oooo", step 2
The process returns to step 03 and waits again for the PB double signal input from the other party's telephone. Then, check the PB double signal input from the other party's telephone (step 205), and if it does not match, "ooo"
o" (step 206). In this case, in step 206, even if the PIN entered from the other party's telephone is not "0000", the process moves to step 218.
Turn off the adapter response relay 16 (Step 218)
, return to step 102 in FIG.

That is, in this embodiment, the PIN number is allowed to be entered twice on the other party's telephone, and if a predetermined match is still not found, the adapter response relay 16 is turned off (step 218) and the line is disconnected. It is configured as follows. In this embodiment, the password is allowed to be entered twice, but it may be configured to allow entry a predetermined number of times, three or more times.

Furthermore, even if a predetermined time (5 seconds in this embodiment) has elapsed, t1
If the personal identification number is not input from the hand phone, the process moves to step 204), step 218, turns off the adapter response relay 16, and returns to step 102 in FIG. 3.

Next, the operation of the "absent mote" will be explained with reference to FIG.

In the "absent mode", first, the speech synthesis unit 1
8 to send the first message "Yes, sorry to have kept you waiting" to the other party's telephone (step 301).

Next, the voice synthesis unit 18 is driven to send the sixth message "I'm away at the moment" to the other party's telephone (step 302), and the fifth message "I'll call you back from here". After the signal tone, enter your phone number and press the pound key.' is sent to the child's phone (step 303).
.

Then, it waits for the PB double signal input from the other party's phone, and
When there is a B double signal input (Step 304), a telephone number storage process is executed to store the telephone number input from the other party's telephone in the RAM M2S (Step 306), and then,
Turn off the adapter response relay 16 (Step 307)
, return to step 102 in FIG. Note that if a telephone number is not input from the other party's telephone even after a predetermined period of time (5 seconds in this embodiment) has elapsed (step 305), the adapter response relay 16 is turned off (step 307), step 102 in FIG. Return to

〔Effect of the invention〕

As explained above, according to the present invention, prank calls can be reliably removed before a call is made, and moreover, it can be configured as an adapter type separate from the telephone set, making it possible to make a cheap and easy-to-use service. There are two things you can do to provide a phone blocking device.

Furthermore, since the ring tones are different depending on the password, the recipient can tell who is calling.

[Brief explanation of drawings]

Fig. 1 is a block diagram showing an embodiment of the prank call prevention device of the present invention, Fig. 2 is a diagram showing the operation panel section of this embodiment, and Figs. 3 to 7 explain the operation of this embodiment. This is a flowchart. 11... Relay circuit, 12... CPU, 13...
Calling signal detection circuit, 14... On/off hook detection circuit, 15... Bell prohibition circuit, 16... Adapter response relay, 17... Hybrid circuit, 18... Voice synthesis unit, 19... DTMF signal receiving circuit, 20
... Bell signal generation circuit, 21 ... Volume, 22
・Amplifier, 23...Speaker, 24...Monitor switching relay, 25...Key switch, 26...LED display section, 27...LCD display section, 28...RAMQQJ- Figure 3 Figure 5

Claims (9)

[Claims] (1) An incoming call detection means that detects an incoming call from a line and seizes the line in response to the incoming call, and inputs password information to the other party's telephone in response to the incoming call detection by the incoming call detection means. a message transmitting means for transmitting a request message; a detecting means for detecting the password information input from the other party's telephone; a reference means for referencing the password information detected by the detecting means with preset password information; A prank call prevention device comprising: ring tone generation means for generating a ring tone corresponding to the password information when the reference means determines that the password information detected by the detection means is correct. . (2) The prank according to claim (1), wherein the ring tone generation means generates a ring tone that differs in at least one of tone, pitch, volume, and generation cycle in accordance with the password information. Telephone prevention device. (3) The prank according to claim (1), wherein the password information is divided into a plurality of groups in advance, and the ringing tone generating means generates a different ringing tone corresponding to the group. Telephone prevention device. (4) The ringing tone generation means uses the reference means to determine whether or not the password information detected by the detection means is correct a plurality of times set in advance, and determines that it is correct during the plurality of judgments. 2. The prank call prevention device according to claim 1, wherein when a prank call is made, a ring tone corresponding to the password information is generated. (5) The device according to claim (1), further comprising means for releasing the capture of the line if the detection means does not detect the password information input from the other party's telephone within a certain period of time. Prank call prevention device. (6) A claim further comprising means for stopping the ringing tone after transmitting a predetermined message if the ringing tone generated by the ringing tone generating means is not responded to within a certain period of time. The prank call prevention device described in paragraph (1). (7) a transmitting means for transmitting a message requesting input of the other party's telephone number if the ringer does not respond within a certain period of time to the ringer generated by the ringer; The prank call prevention device according to claim 1, further comprising means for storing a telephone number of the other party inputted from the telephone. (8) The prank call prevention device according to claim (7), further comprising means for releasing the capture of the line if the telephone number of the other party is not input from the other party's telephone within a certain period of time. . (9) means for setting a monitor mode to monitor the voice input from the other party's telephone, and when set to this monitor mode, the other party's telephone 2. The prank call prevention device according to claim 1, further comprising means for producing the voice input from the prank call prevention device.