JPH09312687A - Portable telephone set with burglar-proof function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the portable telephone set from being illegally used in the event of a theft or missing without making dialing operation of the portable telephone set complicated. SOLUTION: A call number counter 10 of the portable telephone set 10 counts number of times of calls when the call signal is received via a line 3 so as to discriminate whether or not the call number of times reaches a prescribed number of times. When the number of times of calls reaches a prescribed number of times, a selection circuit 11 connects the line 3 to a password discrimination circuit 12. Upon the receipt of the password, the password discrimination circuit 12 compares the password with a prescribed number stored in advance in a memory 13 and inverts a content of a mode switching flag 14 when the comparison indicates coincidence and informs a mode switching signal to a portable telephone set main body 2. When receiving the mode switching signal, the portable telephone set main body 2 executes the changeover of the usual mode and the burglar-proof mode.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile phone with a crime prevention function, and more particularly to a crime prevention function when a mobile communication phone such as a mobile phone is stolen or lost.

[0002]

2. Description of the Related Art Conventionally, some mobile phones have a crime prevention function that prevents transmission unless a personal identification number is entered. That is, in this crime prevention function, unless the personal identification number is input, the security function has only a reception-only function and can receive a call, but cannot make a call.

Further, as a crime prevention function, a communication unit is provided with a storage unit for storing a regular parity number derived from a regular manufacturing number by a specific calculation unit. There is also a method of deriving a parity number from the product number of, and comparing this parity number with a regular parity number.

In this method, communication is possible if the comparison results match, and if they do not match, a prohibition bit is set to disable communication semipermanently. As a result, it is possible to prevent unauthorized use in the charging system of another person by rewriting the manufacturing number. The above method is described in JP-A-4-954.
No. 21, which is described in detail.

[0005]

In the above-mentioned conventional crime prevention function of a mobile phone, in the case of the method of prohibiting the transmission without inputting the personal identification number, the personal identification number must be input every time the user tries to make a call. Therefore, there is a problem that the calling operation becomes troublesome.

In the case of a method of comparing a parity number derived from the current product number with a regular parity number during a call, in a charging system of another person by rewriting the serial number (manufacturing number) of a mobile phone or the like. It only prevents unauthorized use in mobile phones, and no measures are taken when a mobile phone is lost. In this case, if the comparison result does not match, the prohibition bit is set and it is not easy to erase the prohibition bit, so that the communication is semipermanently disabled.

Therefore, an object of the present invention is to solve the above-mentioned problems, and to prevent illegal use at the time of theft or loss without making the calling operation of the mobile phone troublesome. To provide.

[0008]

A portable telephone with a crime prevention function according to the present invention comprises a counting means for counting the number of times a calling signal is inputted through a line, and a count value of the counting means is a preset number of times or more. When it becomes, the judgment means for judging whether or not the personal identification number inputted through the line is a preset predetermined value, and when the judgment means judges the personal identification number as the predetermined value, the own device is made to be a reception-only device. And a control means.

In addition to the above-mentioned structure, another mobile phone with a crime prevention function according to the present invention holds one of a crime prevention mode indicating only reception and a normal mode indicating a state where reception and transmission are possible. The control means sets the self-opportunity to either the crime prevention mode or the normal mode based on the content held by the holding means and the determination result of the determination means.

Another mobile phone with a crime prevention function of the present invention is
In addition to the above-mentioned configuration, there is provided means for making the telephone callable in response to the connection instruction signal to the line when the count value of the counting means is less than the predetermined number of times.

According to still another aspect of the present invention, in the above-mentioned mobile phone with a crime prevention function, the control means invalidates an instruction signal other than a connection control signal to the line and an end control signal for a call. It is configured to be dedicated to the reception.

[0012]

First, the operation of the present invention will be described below.

When a mobile phone is called, the call counter of the mobile phone counts the number of calls, and when the count value exceeds a certain number, the line is connected to connect to the personal identification number determination circuit.

At this time, when the personal identification number input through the line is determined to be correct by the personal identification number determination circuit, the personal identification number determination circuit causes the mobile phone body to receive only the crime prevention mode or release the crime prevention mode. Toggle settings. The crime prevention mode can be canceled by the above remote operation.

With this, it is possible to eliminate the troublesomeness of the calling operation in the mobile phone, and prevent the mobile phone from being illegally used when it is stolen or lost.

Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing the configuration of one embodiment of the present invention. In the figure, the mobile phone 1 includes a call (CALL) counter 10 and a selection circuit (SE).
L) 11, the password identification circuit 12, and the memory (EEP)
ROM: Electrically Erasable
Programmable Read Only Me
13), a mode switching flag 14, and a memory (ROM: Read Only Memory) 15
And a mobile phone main body 2 and are connected to the line 3 by wireless communication.

Calling counter 10 of mobile phone 1
When a calling signal is input through the line 3, the number of times of calling is counted, and it is determined whether the number of times of calling has reached a preset fixed number (for example, 15 times).
Since the line 3 is directly connected to the mobile phone body 2 by the selection circuit 11, the mobile phone body 2 can talk if the number of calls is less than a certain number and the call state is entered.

When the number of calling times reaches a certain number or more, the calling number counter 10 notifies the selection circuit 11 to that effect. Since the selecting circuit 11 connects the line 3 to the personal identification number judging circuit 12, it is not possible to make a call in this case.

When the personal identification number is input through the line 3, the personal identification number judging circuit 12 compares the personal identification number with a predetermined number (the user can arbitrarily register the predetermined number) stored in the memory 13 in advance.

When the personal identification number determination circuit 12 detects a mismatch in the comparison, it counts the number of mismatches and enters a re-input waiting state. When the number of mismatches reaches a preset number (for example, 3 times), the personal identification number determination circuit 12 notifies the mobile phone body 2 to disconnect the line 3.
The line 3 is disconnected by the mobile phone body 2.

On the other hand, when the personal identification number judging circuit 12 detects a coincidence in the comparison, it inverts the value of the mode switching flag 14 and notifies the mobile phone body 2 of the mode switching signal, so that the mobile phone body 2 is set to the normal mode. Switch to crime prevention mode.

For example, when the value of the mode switching flag 14 is inverted from "1" to "0", the mobile phone body 2
Executes switching from normal mode to crime prevention mode. When the value of the mode switching flag 14 is inverted from "0" to "1", the mobile phone body 2 switches from the crime prevention mode to the normal mode.

These switching processes are performed by executing a preset program in the memory 15. Note that the security mode setting limits the setting of the normal mode, so that the codes assigned to the buttons (not shown) other than the on-hook button and the off-hook button (not shown) of the mobile phone body 2 are not recognized. By doing so, the mobile phone body 2 is dedicated to reception.

FIG. 2 is a flow chart showing the switching operation between the normal mode and the crime prevention mode according to the embodiment of the present invention. The switching operation between the normal mode and the crime prevention mode according to the embodiment of the present invention will be described with reference to FIGS. 1 and 2. Here, the switching operation from the normal mode to the crime prevention mode by the remote operation of the user will be described.

When switching from the normal mode to the crime prevention mode, the user calls the mobile phone 1 (CALL).
I do. When the mobile phone 1 makes this call and a call signal is input through the line 3, the call number counter 10 counts the number of calls, and the number of calls is set to a predetermined number (15 in this case). ) Is determined (step S1 in FIG. 2).

Since the line 3 is directly connected to the mobile phone main body 2 by the selection circuit 11, if the call state (phone off-hook state) is entered after the number of calls is less than a certain number of times (step S2 in FIG. 2), the mobile phone main body 2 is called. Can talk. Further, when the number of times of calling is less than a certain number and the line 3 is disconnected and the calling signal is stopped (step S in FIG.
3), the processing of the mobile phone body 2 ends.

On the other hand, when the number of calls reaches a certain number or more, the number-of-calls counter 10 notifies the selection circuit 11 of that fact.
Is notified, the line 3 is connected to the personal identification number determination circuit 12 at the selection time 11 (step S4 in FIG. 2), and a switching confirmation sound for notifying the switching to the personal identification number determination circuit 12 is transmitted to the line 3 (Fig. 2 step S5). However, in this case, the line 3 is not connected to the main body 2 of the mobile phone, so that the call cannot be performed.

When the personal identification number is input through the line 3 (step S6 in FIG. 2), the personal identification number judgment circuit 12 compares the personal identification number with a predetermined number stored in advance in the memory 13 (step S8 in FIG. 2).

However, if the personal identification number is not input even after a predetermined time has elapsed since the line 3 was connected to the personal identification number determination circuit 12 (steps S6 and S7 in FIG. 2), the personal identification number determination circuit 12 connects the line 3 to the personal identification number determination circuit 12. Since the cellular phone body 2 is notified to disconnect, the cellular phone body 2 disconnects the line 3 (step S10 in FIG. 2).

When the personal identification number determination circuit 12 detects a mismatch in the comparison, the number of mismatches must reach a preset number (three times in this case) (step S in FIG. 2).
9) Then, the process returns to step S5 to enter the re-input waiting state.

When the number of mismatches reaches a preset number (i = i + 1 ≧ 3) (step S9 in FIG. 2), the personal identification number determination circuit 12 notifies the mobile phone main body 2 to disconnect the line 3, so that the mobile phone The line 3 is disconnected by the main body 2 (step S10 in FIG. 2).

On the other hand, when the personal identification number judging circuit 12 detects a match in the comparison, it inverts the value of the mode switching flag 14 from "1" to "0" and notifies the mobile phone body 2 of the mode switching signal. Therefore, the mobile phone body 2 executes switching from the normal mode to the crime prevention mode (step S11 in FIG. 2), and sends a switching confirmation sound for notifying the switching from the normal mode to the crime prevention mode to the line 3 (FIG. 2). Step S12).

Here, when the on-hook button of the mobile phone body 2 is pressed, the line 3 is moved by the mobile phone body 2.
Is cut (step S10 in FIG. 2). In this case, the switching confirmation sound is transmitted to the line 3 until the on-hook button of the mobile phone body 2 is pressed.

By switching from the normal mode to the crime prevention mode, the mobile phone 1 becomes only for reception, and the buttons other than the on-hook button and the off-hook button cannot be used. Therefore, the mobile phone 1 is protected against unauthorized use when it is stolen or lost. Can be planned.

As described above, the number of times the ringing signal is input through the line 3 is counted by the ringing number counter 10 and is input through the line 3 when the count value of the ringing number counter 10 becomes a preset number of times or more. It is determined whether or not the secret identification number is a preset predetermined number by the secret identification number determining circuit 12, and when the secret identification number determining circuit 12 determines the secret identification number to be the predetermined number, the own machine is set to receive only. Without having to enter your PIN each time you call
You can activate the crime prevention function.

Therefore, it is possible to prevent the mobile phone 1 from being illegally used when it is stolen or lost without making the calling operation in the mobile phone 1 troublesome. In addition, by releasing the crime prevention function by the same operation as above,
The mobile phone 1 can be reused again.

[0037]

As described above, according to the present invention, the personal identification number to be inputted through the line after the number of times of input of the calling signal inputted through the line exceeds the preset number of times is preset. By dedicating itself to reception only when it is determined to be the predetermined value, there is an effect that it is possible to prevent the mobile phone from being illegally used when it is stolen or lost without making the calling operation on the mobile phone troublesome. .

[Brief description of drawings]

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention.

FIG. 2 is a flowchart showing a switching operation between a normal mode and a crime prevention mode according to an embodiment of the present invention.

[Explanation of symbols]

 1 Mobile Phone 2 Mobile Phone Main Body 3 Line 10 Call Count Counter 11 Selection Circuit 12 PIN Identification Circuit 13, 15 Memory 14 Mode Switching Flag

Claims (4)

[Claims] 1. A counting means for counting the number of times a ringing signal is inputted through a line, and a personal identification number inputted through the line when a count value of the counting means exceeds a preset number of times. A mobile phone with a crime prevention function, characterized in that it has a judging means for judging whether or not it is a set predetermined value, and a control means for dedicating itself to reception when the judging means judges that the personal identification number is a predetermined value. Telephone. 2. A holding means for holding one of a crime prevention mode indicating only the reception and a normal mode indicating a state where reception and transmission are possible, and the control means holds the contents held in the holding means and the determination. The mobile phone with a crime prevention function according to claim 1, wherein the mobile phone is set to one of the crime prevention mode and the normal mode based on the determination result of the means. 3. The method according to claim 1, further comprising means for making the telephone callable in response to a connection instruction signal to the line when the count value of the counting means is less than the predetermined number of times. Mobile phone with crime prevention function described in 2. 4. The control means is configured to make the reception only by invalidating an instruction signal other than a connection control signal to the line and an end control signal for a call. 4. The mobile phone with a crime prevention function according to claim 3.