JPH06188829A - Telephone system - Google Patents

Abstract

PURPOSE:To prevent the illegal usage of a slave device or a portable telephone. CONSTITUTION:The sub ID code or ID code of a lost or stolen slave device 24 or portable telephone is registered in a master device 19 or a public station 29. When a transmission from the registered slave device 24 or portable telephone is received the transmission from the lost slave device 24(or portable telephone) is inhibited, or the transmission from the lost slave device 24(or portable telephone) is inhibited, inhibition display is operated, and inhibition buzzer is rung, or the transmission from the lost slave device 24(or portable telephone) is inhibited, inhibition display is operated, and usage inhibition message or return message is issued. Thus, an alarm sound or an alarm message can be issued to the illegal user, so that a charge request due to the illegal usage can be prevented. And also, the illegal user can be informed of the returning method of the lost slave device 24 or portable telephone by demonstrating clearly the returning method by the alarm message, so that a returning rate can be improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a telephone set which prohibits the use of a cordless phone which has been lost or stolen, or a mobile phone.

[0002]

2. Description of the Related Art In recent years, cordless phones, which can freely carry a handset within a limited range, have become widespread due to diversification of information and advances in digital signal processing technology. In addition, mobile phones that can make a phone call anytime and anywhere in a predetermined public station area are also popular.

The basic structure of a cordless phone consists of a master unit connected to a telephone line and a slave unit containing a rechargeable battery. A plurality of slave units can be used for one master unit. The condition for enabling communication between the master unit and the slave unit is that the ID codes of the slave units with respect to the master unit match. By the way, when a plurality of child devices are prepared for one parent device, in addition to the ID code with the parent device to identify each child device, the sub information that is identification information of each child device An ID code is assigned to each child device.

On the other hand, in the case of mobile phones, when the contract is completed, an ID code is assigned to each mobile phone, and the public station closes the phone line only to the mobile phones with the same ID code to use the mobile phone. Is possible.

FIG. 1 shows an example of the basic configuration of a conventional cordless phone. A voice signal, which is the content of a call from the other party and is taken into the base unit 1 via the telephone line, goes through the line control unit 2. After that, it is modulated into a high frequency by the RF unit 3 and sent out from the antenna 8. The control unit 4 controls the modulation / demodulation operation of the RF unit 3, receives the dial code from the key input unit 6, and displays the display unit 7.
Displays a dial code or the like, or causes the storage unit 5 to store a shortened code or the like.

On the side of the slave unit 9, when the RF signal from the side of the master unit 1 is taken in via the antenna 18, it is demodulated by the RF unit 11, converted into a voice signal by the voice unit 10, and then output from the speaker 14. The control unit 12 controls the modulation / demodulation operation of the RF unit 11 as well as the base unit 1 side, receives the dial code from the key input unit 17, and displays the dial code or the like on the display unit 16. For example, the storage unit 13 stores the shortened code or the like.

The call with the other party using the handset 9 is
First, the ID code of the child device 9 with respect to the parent device 1 is determined by communication between the parent device 1 and the child device 9, and the telephone line is closed when the ID code of the child device 9 is matched. Becomes When a plurality of child devices 9 are prepared for the parent device 1, the sub ID code of the child device 9 is determined to be the same. On the other hand, in the case of the mobile phone, as described above, the public station enables the use of the mobile phone by closing the telephone line only to the mobile phone having the matching ID code.

[0008]

As described above, in the above-mentioned conventional cordless phone, the ID code of the slave unit 9 or a plurality of slave units 9 for the master unit 1 are prepared by the communication between the master unit 1 and the slave unit 9. If the sub-ID code of the case where there is a match, the telephone line is closed to enable the call,
In the case of a mobile phone, the public station enables a call only by closing the phone line of the mobile phone having the same ID code.

By the way, the forms of such a cordless phone and a mobile phone have been developed on the assumption that they will not be lost or stolen, and are available to any user. Further, in some cordless phones currently on the market, the communicable area between the master unit 1 and the slave unit 9 is a long distance of about 500 mm. Therefore, if the slave unit and the portable telephone are lost or stolen, there is a high possibility that the slave unit 9 and the portable telephone will be illegally used, and a countermeasure is required.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a telephone system capable of preventing unauthorized use of a cordless phone which has been lost or stolen by a handset or a mobile phone. And

[0011]

The invention according to claim 1 is
In a cordless type telephone system having at least one slave unit with respect to the master unit, a registration unit that registers a sub ID code of the lost or stolen slave unit, and the above-mentioned registration unit based on the sub ID code of the slave unit. A communication prohibition control means for prohibiting communication between the parent machine and the lost or stolen child machine, and warning information notification means for notifying warning information to the lost or stolen child machine. Is characterized by.

According to a second aspect of the present invention, in a portable telephone system capable of communicating with a partner station via a public station, registration means for registering an ID code of the lost or stolen portable telephone. And a communication prohibition control means for prohibiting communication with the other station via the public station based on the ID code of the telephone and warning information for the lost or stolen portable telephone. A warning information notifying unit is provided.

[0013]

According to the first aspect of the present invention, the sub ID code of the lost or stolen child device is registered in the registration means, so that the communication prohibition control means loses it with the parent device based on the sub ID code. Alternatively, the communication with the stolen child device is prohibited, and further, the warning information notifying means notifies the warning information to the lost or stolen child device.

According to the second aspect of the present invention, the ID code of the lost or stolen portable telephone is registered in the registration means, and the communication prohibition control means carries the mobile phone with the public station based on the ID code. Communication with a portable telephone is prohibited, and further, warning information is notified to a portable telephone whose warning information notifying means has been lost or stolen.

The sub ID code or I for the registration means
The D code is registered by designating the lost or stolen child device or mobile phone in the parent device or public station. Therefore, the communication between the master unit or the public station and the slave unit or the mobile phone in the lost or stolen cordless phone is prohibited, and as a result, the use of the respective slave unit or the mobile phone becomes impossible.

[0016]

Embodiments of the present invention will be described below in detail with reference to the drawings. In the drawings described below, the same parts as those in FIG. 1 are designated by the same reference numerals, and overlapping description will be omitted. In addition, it is assumed that a plurality of slave units described below are prepared for the master unit.

FIG. 2 shows an embodiment of the telephone system of the present invention, in which the sub-ID code of the lost or stolen slave unit is designated for the master unit 19 shown in FIG. Transmission control operation unit 23 for displaying and a transmission control display unit 22 for displaying the unusable state of the child device for which the sub ID code is designated
Has been added.

In addition, the slave unit 24 shown in FIG. 2B has a transmission control display section 27 for indicating that it cannot be used and a warning sound and a warning message for notifying that the use is prohibited. Warning information generating unit 28 for generating information
Has been added. That is, when the sub ID code of the child device 24 which is lost or stolen by the operation of the transmission control operation unit 23 of the parent device 19 is input, the sub ID code is stored in the storage unit 21. Handset 2 lost or stolen
4 from the slave unit 24, the control unit 20 receives the sub ID code from the slave unit 24 and the sub I code stored in the storage unit 21.
The D code is compared, and if they match, the control unit 20
Sends a command to the slave unit 24 to generate a warning sound or a warning message. On the side of the child device 24 that has received the command, the control unit 25 causes the warning information generation unit 28
Generates a warning sound or a warning message. The warning sound from the warning information generating unit 28 is generated from the speaker 14 via the voice generating unit 10. Further, the warning message is displayed on the transmission control display unit 27.

FIG. 2 (c) shows the internal structure of a public station that manages the mobile phone. The voice signal, which is the content of the call from the other party, taken in by the public station 29 via the ISDN line, is line controlled. After passing through the section 30, it is modulated into a high frequency by the RF section 31 and transmitted from the antenna 36. Control unit 32
Controls the modulation / demodulation operation of the RF unit 31, stores the ID code of the mobile phone lost or stolen from the input / output unit 34 in the storage unit 33, or displays the ID code on the display unit 35. Display it. If there is a call from a lost or stolen mobile phone,
Similarly to the above, the control unit 32 compares the ID code of the mobile phone with the ID code stored in the storage unit 33, and when they match, sends a command to generate a warning sound or a warning message to the mobile phone. To do.

The following methods, for example, can be used to disable the use of lost or stolen mobile phones and mobile phones. Stop the functions of the handset and mobile phone itself. The response from the base unit and the public station to the call (calling operation) from the handset and the mobile phone is stopped. Even when an incoming call is made from the telephone line or the ISDN line, no call is made to the handset or the mobile phone. In the method (2), the function of itself may be forcibly stopped by sending a predetermined command from the master unit and the public station even if the sub-ID code and the ID code do not match.

FIG. 3 shows another embodiment in which the configuration of the telephone system shown in FIG. 2 is changed. In the drawings described below, the same parts as those in FIG. 2 are designated by the same reference numerals, and overlapping description will be omitted. This figure shows the case where other phones such as public telephones are used to notify the parent device and public station of the sub ID code or ID code of the lost or stolen child device or mobile phone. To DTMF
Signal or ISDN signal is used. That is, the master device 37 shown in FIG.
A DTMF receiving unit 38 for receiving the MF) signal is added. The slave unit 24 shown in FIG. 2B has the same form as that shown in FIG. A line data receiver 42 is added to the public station 41 shown in FIG.

DTM via telephone line or ISDN line
When the sub-ID code or ID code of the lost or stolen child device or mobile phone is sent to the parent device 37 or the public station 41 by the F signal or the ISDN signal, the control unit 39 or 43 respectively The code or ID code is stored in the storage units 40 and 44. When a call is made from the lost or stolen child device 24 or the mobile phone, the respective control units 39 and 43 store the sub ID code or the ID code from the child device 24 or the mobile phone in the storage units 40 and 44. It is compared with the sub ID code or ID code stored in. When the respective codes match, it is impossible to use the respective slaves 24 or mobile phones as described above.

Next, the operation of the telephone system having the above configuration will be described with reference to FIG. As an example of the operation, when the case where the child device (or mobile phone) is lost is explained,
First, the sub ID code (or ID code) of the lost child device (or mobile phone) is registered in the parent device (or public station) (step 401). The registration of the sub ID code (or the ID code) is performed by operating the transmission control operation unit 23 (or the input / output unit 34 of the public station 29) as described in FIG.

When there is a call (or call) from the lost or stolen child device (or mobile phone) (step 4)
02), each of the control units 20, 32, 39 and 43 receives the sub ID code or ID code from the child device 24 or the mobile phone and the sub ID code or ID code stored in the storage unit 21, 33, 40 or 44. When the values match with each other, the process proceeds to (step 404). That is, one of the operations shown in FIG. 5 is performed, and in (A-1), the outgoing call from the lost child device (or mobile phone) is prohibited. In (A-2), calling from the lost child device (or mobile phone) is prohibited, a prohibition display is displayed, and a prohibition buzzer sounds. In (A-3), calling from a lost child device (or mobile phone) is prohibited, a prohibition display is displayed, and a use prohibition message or a return message is generated.

On the other hand, if there is no call from the lost or stolen handset (or mobile phone), the telephone line (or ISDN line) waits for an incoming call (step 403) and the incoming call is received. If there is, no call is made to the lost child device (or mobile phone) (step 405). If there is no incoming call (steps 402, 4
In 03), the call waits or the call waits.

As described above, in this embodiment, the sub ID of the child device or the mobile phone which is lost or stolen by the parent device or the public station.
Register the code or ID code, and if there is a call from the registered handset or mobile phone, prohibit the call from the lost handset (or mobile phone) (A-1),
Prohibit outgoing calls from the lost handset (or mobile phone), display a prohibition display, and ring the prohibited buzzer (A-2), or prohibit outgoing calls from the lost handset (or mobile phone). , The prohibition display and the use prohibition message or the return message are generated (A-3). Therefore, it is possible to prohibit illegal use of the child device (or mobile phone), and it is possible to issue a warning sound or a warning message to the illegal user, so that it is possible to prevent billing due to illegal use.

In each of the above embodiments, the case where the warning sound and the warning message are generated as the warning information has been described, but the present invention is not limited to this example, and the returning method may be clearly indicated in the warning message. In this case, the method of returning the lost handset or mobile phone can be notified, so that the return rate can be increased.

[0028]

As described above, according to the telephone system of the present invention, the sub ID of the lost or stolen child device is obtained.
By registering the code in the registration means, the communication prohibition control means prohibits communication between the parent machine and the lost or stolen child machine based on the sub ID code, and the warning information notification means is lost or lost. Added warning information to the stolen child machine.

By registering the ID code of the lost or stolen portable telephone in the registration means,
The communication prohibition control means prohibits communication between the public station and the mobile phone based on the ID code, and the warning information notification means notifies the mobile phone that has been lost or stolen of the warning information. I chose

Therefore, the communication between the master unit or the public station and the slave unit or the mobile phone in the lost or stolen cordless phone is prohibited, so that the use of each slave unit or the mobile phone becomes impossible. It is possible to prevent unauthorized use by a child device or a mobile phone.

[Brief description of drawings]

FIG. 1 is a block diagram showing an example of internal configurations of a master unit and a slave unit in a conventional cordless phone.

FIG. 2 is a block diagram showing an internal configuration of a master unit and a slave unit of a cordless phone and an internal configuration of a public station according to an embodiment of a telephone system of the present invention.

FIG. 3 is a block diagram showing another embodiment when the configuration of the telephone system of FIG. 2 is changed.

4 is a flowchart for explaining the operation of the telephone system of FIGS. 2 and 3. FIG.

5 is a diagram for explaining the operation of the telephone system of FIGS. 2 and 3. FIG.

[Explanation of symbols]

 2,30 Line control part 3,11,31 RF part 6,17 Key input part 7,16,35 Display part 8,18,36 Antenna 9 Handset 10 Voice part 12,20,32,39 Control part 13,21 , 26, 33, 40, 44 Storage unit 19 Base unit 22, 27 Transmission control display unit 23 Transmission control operation unit 28 Warning information generation unit 34 Input / output unit 38 DTMF reception unit 42 Line data reception unit

Claims (2)

[Claims] 1. A cordless type telephone system having at least one slave unit with respect to a master unit, registration means for registering a lost or stolen sub ID code of the slave unit, and a sub ID of the slave unit. Communication prohibition control means for prohibiting communication between the parent machine and the lost or stolen child machine based on a code, and warning information notification means for notifying warning information to the lost or stolen child machine A telephone system comprising: 2. A portable telephone system capable of communicating with a partner station via a public station, registration means for registering an ID code of the lost or stolen portable telephone, and an ID of the telephone. Communication prohibition control means for prohibiting communication with the other station via the public station based on a code, and warning information notification means for notifying warning information to the lost or stolen portable telephone. A telephone system comprising: