JPH1169447A - Communication equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a communication equipment capable of easily setting use impossibility and use possibility by an owner. SOLUTION: When a call is terminated, a control part 16 collates a use stop code stored in a code storage part 20 beforehand and a sub address, and in the case that both match, invalidates succeeding key operations. On the other hand, in the case that both do not match, a use restart code stored in the code storage part 20 beforehand and the sub address are collated, and in the case that both match, the succeeding key operations are validated. Also, in the case that the sub address does not match with either one of the use stop code and a use possibility code stored in the code storage part 20 beforehand, a normal call terminating operation is started.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a portable telephone and a PHS
The present invention relates to a communication device that sets use prohibition when a portable communication device such as a terminal is lost or stolen, and prevents unauthorized use.

[0002]

2. Description of the Related Art Conventionally, portable communication devices such as portable telephones and PHS terminals have a drawback that they are easily lost or stolen due to their characteristics of being portable. With conventional portable communication devices, in order to prevent others from using them if they are lost or stolen, you must contact your carrier and have your phone number disabled. Take. Also, when the use of the telephone number is resumed, a procedure of contacting the communication carrier to make the telephone number usable is taken.

In order to prevent unauthorized use by a third party due to theft or misplacement, Japanese Patent Application Laid-Open No. Hei 6-326659 discloses a method for calling a portable communication device with a telephone number to which a destination subaddress for controlling a lock state is added. By applying
Techniques for locking the use of portable communication devices have been disclosed.

[0004]

As described above, in the conventional portable communication terminal, it is necessary to contact a communication carrier in order to prevent the terminal from being used by others. However, there is a problem that the procedure becomes complicated and it takes time to make the apparatus unusable. Lost,
If the user is not sure whether the vehicle is stolen or not, he or she hesitates to contact the carrier, and as a result, it takes a long time to disable the device.

Further, in the above-described method of locking the portable communication terminal by the destination subaddress, a code for controlling the lock state is accidentally entered in the destination subaddress, and the portable communication terminal becomes unusable. There has been a problem that the lock state may be changed, for example, it may become usable.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a communication device that can be set to be unusable or usable easily by an owner.

[0007]

In order to achieve the above object, a communication device according to the first aspect of the present invention is carried by a user and communicates with another communication device via a communication network in advance. The first set by the terminal owner
Code storage means for storing a control code transmitted from a partner terminal at the time of an incoming call, and a control code received by the reception means and a first code stored in the code storage means. First determining means for determining whether or not the control code and the first control code match, and when the first determining means determines that the control code and the first control code match, the call operation is forcibly performed. And control means for transition to

In a preferred embodiment, the code storage means stores a second control code set in advance by the owner of the terminal, and controls the call operation by the control means. After the transition, a tone signal receiving means for receiving a tone signal transmitted from the calling terminal, a tone signal received by the tone signal receiving means, and a second control code stored in the code storage means. And a second judging means for judging whether the tone signal and the second control code coincide with each other.
The key operation control means for invalidating the key operation of the communication device may be provided.

[0009] In a preferred embodiment, the code storage means stores, in addition to the first control code and the second control code, a code set in advance by an owner of the terminal. A third determining means for storing whether the tone signal received by the tone signal receiving means matches a third control code stored in the code storing means. The key operation control means may enable the key operation of the communication device when the third determination means determines that the tone signal matches the third control code.

In a preferred embodiment, when an incoming call is received in a state where the key operation of the communication device is disabled, voice data is recorded or reproduced in accordance with an instruction from the calling terminal. A voice control unit may be provided.

In a preferred embodiment, for example, the first to third control codes include:
It may be set to the subaddress in the call setup message transmitted from the terminal on the calling side when the line is connected.

In order to achieve the above object, a communication device according to the present invention is carried by a user and stores personal information of an owner in a communication device that communicates with another communication device via a communication network. Storage means, code storage means for storing a fourth control code previously set by the owner of the terminal, receiving means for receiving a control code transmitted from the partner terminal at the time of an incoming call, reception by the receiving means Determining means for determining whether the obtained control code matches the fourth control code stored in the code storage means, and determining that the control code and the fourth control code match by the determining means. And an erasing means for forcibly erasing the personal information stored in the storage means when the judgment is made.

In a preferred embodiment, the fourth control code is set to a subaddress in a call setup message transmitted from a calling terminal when a line is connected. Is also good.

In order to achieve the above object, a communication device according to the present invention is carried by a user and stores personal information of an owner in a communication device that communicates with another communication device via a communication network. Storage means, code storage means for storing a fifth control code previously set by the owner of the terminal, receiving means for receiving a control code transmitted from the partner terminal at the time of an incoming call, reception by the receiving means Determining means for determining whether the set control code matches the fifth control code stored in the code storage means, and determining that the control code matches the fifth control code by the determining means. And transmitting means for transmitting the personal information stored in the storage means when the determination is made.

In a preferred embodiment, for example, an input unit having a plurality of keys for performing power operation, telephone number input, etc., and a control code and a fifth control code are determined by the determination unit. The apparatus may further include the key operation control unit that invalidates a key operation of the input unit when it is determined that the key operations match.

In a preferred embodiment, the personal information transmitted by the transmitting means is received by the partner terminal when the partner terminal has a data receiving function. If the partner terminal does not have a data receiving function, it may be temporarily stored on the communication network.

In a preferred embodiment, the fifth control code is set to a subaddress in a call setup message transmitted from a calling terminal when a line is connected. Is also good.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, an embodiment of the present invention
An embodiment applied to an HS terminal will be described with reference to the drawings. A. Configuration of Example A-1. Configuration of Communication System FIG. 1 is a block diagram showing a configuration of a communication system according to an embodiment of the present invention. In the figure, reference numeral 1 denotes an ordinary analog telephone network or a dedicated digital network (hereinafter, referred to as a communication network) laid all over the country. Next, 1 is a network management station, which includes location registration information, authentication information,
The accounting information is stored in a database, and controls the communication network 1 to manage communication between terminals. In particular, in this embodiment, in order to prevent the use of the telephone directory data and various data of the PHS terminal 6 passed to a third party, the telephone directory and various data are transferred to the network management station 1 and temporarily stored. It is designed to hold. The temporarily stored telephone directory data and various data are transferred to a terminal having a data receiving function (either portable or fixed type) upon request.

Next, the public base stations 5 and 5 are connected to the communication network 1
Are provided at predetermined intervals, each have a service area (radio wave reachable range: communication range) having a radius of several hundred meters centered on itself, and PHS terminals 6 and 6 existing in the service area are wirelessly connected to a communication line. A relay station connected to the network 1. Next, the telephone 3 is a terminal connected to the communication network 1 and having a handset, dial keys, various function keys, etc., and capable of communicating with an external PHS terminal 6 and a telephone. Is set to the sub-address of a call setting message described later and can be transmitted.

The PHS terminals 6, 6 are carried by the user,
A terminal that is driven by a battery and has the same functions as a normal telephone, such as a liquid crystal display unit and dial keys, and communicates with the public base stations 5 and 5 wirelessly.
It is connected to a communication network 1. When an incoming call is received, the PHS terminals 6 and 6 extract the control code (compulsory call code, use stop code, use resume code) of the caller number and subaddress from the call setting message described below, and perform various control operations stored in advance. The code is compared with the code, and the operation corresponding to the matched control code is executed. In this embodiment, after receiving a call with the forced call code, forcibly transition to the call operation, disabling the key operation with the use stop code to disable the key operation, and further enabling the key operation with the use resume code to enable the key operation. It is supposed to.

A-2. FIG. 1 is a block diagram illustrating a configuration of a PHS terminal according to an embodiment of the present invention. In the figure, 10 is a transmitting / receiving unit,
It comprises a frequency conversion unit comprising a receiving unit and a transmitting unit, and a modem comprising a receiving unit and a transmitting unit. The receiving unit of the frequency conversion unit converts a signal from a slave unit (not shown) received by the antenna ANT, which is input via an antenna switch for distributing transmission / reception, into a local oscillation signal of a predetermined frequency output from the PLL synthesizer. By mixing, IF in the vicinity of 1.9 GHz band to 1 MHz band
Frequency conversion to (intermediate frequency) signal. Further, the transmission unit of the frequency conversion unit mixes a modulated wave of π / 4 shift QPSK supplied from a modem described later with a local oscillation signal of a predetermined frequency output from the PLL synthesizer,
The frequency is converted to a 1.9 GHz band, radiated from the antenna ANT via the antenna switch, and transmitted to a slave (not shown). Next, the receiving unit of the above-described modem demodulates the IF signal from the frequency converting unit, separates the IF signal into IQ data, forms a data sequence, and sends the data sequence to the communication control unit 11. Further, in the transmitting section of the modem, the data supplied from the communication control section 11
It creates Q data, modulates it by π / 4 shift QPSK, and sends it to the frequency conversion unit of the transmission / reception unit 10.

Next, the communication control section 11 is composed of a transmitting side and a receiving side, and performs frame synchronization and slot data format processing. The receiving side extracts data for one slot at a predetermined timing from the received data supplied from the modem of the transmission / reception unit 10, extracts a unique word (synchronization signal) from the data, and generates a frame synchronization signal. After the descrambling of the control data section and the audio data section, the control data is transmitted to the control section 16 and the audio data is transmitted to the audio processing section 12. Further, the transmitting side adds control data and the like to the audio data supplied from the audio processing unit 12, adds scramble and the like, and then adds a unique word and the like to create transmission data for one slot. It is inserted into a predetermined slot in the frame at a predetermined timing and transmitted to the modem of the transmission / reception unit 10.

Next, the above-mentioned audio processing unit 12 is composed of a speech codec and a PCM codec. The speech codec performs compression / expansion processing of digital data, and includes a receiving side and a transmitting side. The receiving side receives the ADPCM audio signal (4 bits × 8 kHz = 3) supplied from the communication control unit 11.
2Kbps) to PCM audio signal (8 bits x 8KHz =
Decompress to 64Kbps to expand PCM
Output to codec. The transmitting side encodes the PCM audio signal supplied from the PCM codec into an ADPCM audio signal, compresses the signal, and sends the signal to the communication control unit 11. The above-described PCM codec performs an analog / digital conversion process. The receiving side converts the PCM audio signal supplied from the speech codec into an analog audio signal by D / A conversion, causes the speaker 13 to generate a sound, and transmits the signal. The side is a microphone 14 or an NCU 15 described later.
A / D conversion of the analog audio signal input from
It is converted into a CM signal and sent to the speech codec.

Next, the key input section 15 is composed of numerical keys for inputting the telephone number of the other party, a switch for on-hook / off-hook, a volume switch for changing the voice output, and the like. The state of these keys and switches is controlled by the control unit 1.
6. Next, the control unit 16 controls the entire apparatus according to a predetermined program. In particular, in this embodiment,
When receiving a forced call code at the time of incoming call, the control unit 16 forcibly transitions to a call, thereafter receives a tone signal, and when the tone signal is an unusable code,
The PHS terminal is disabled by disabling the key operation by the key input unit 15, and when the tone signal is a usable code, the PHS terminal is enabled by enabling the key operation by the key input unit 15. Can be used (first embodiment). Further, when the DB erasing code is set in the sub address of the call setting message at the time of an incoming call, the control unit 16 forcibly erases the stored telephone directory data and various data (third embodiment). Further, the control unit 16
When an unusable code is set in the sub-address of the call setup message at the time of the incoming call, the key operation by the key input unit 15 is invalidated, the PHS terminal is disabled, and the usable code is set in the sub-address. The key operation by the key input unit 15 is enabled, and the PHS terminal can be used (fourth embodiment).

Next, the ROM 17 stores a program executed by the control unit 16 and various parameters. Next, the RAM 18 stores data generated under the control of the control unit 16 and is used as a working area, and also includes an address book including data such as an address of a called party and a telephone number. Phonebook (database) is stored. Next, the display unit 1
Reference numeral 9 denotes a liquid crystal display for displaying various data such as an operation mode, a telephone number, and a talk time, and an LED for indicating ON / OFF of a switch and the like. Display various data. The code storage unit 20 stores a forced call code, an unusable code and an available code (first embodiment), a DB (database) erasing code (third embodiment), A code and a usable code (the fourth embodiment) are stored.

A-3. Configuration of Call Setup Message Next, FIG. 3 is a conceptual diagram for explaining the call setup message. The call setup message is used when calling, receiving, etc.
Calling and receiving terminals (external telephones, PHS terminals)
Information transmitted and received between The call setup message is
It includes a protocol identifier, a call number, a message type, a facility as another information element, a calling number, a calling subaddress, a called number, and a called subaddress.

In the present invention, in the first embodiment described later, the above-mentioned forced call code is set to the above-mentioned subaddress and transmitted to the PHS terminal 6 which has been passed to a third party. Further, in a second embodiment described later, the DB erasure code is set to the above-mentioned sub-address and transmitted to the PHS terminal 6 that has passed to a third party. Then, in a third embodiment to be described later, the unusable code or the usable code is set to the above-mentioned sub-address and transmitted to the PHS terminal 6 which has passed to a third party.

B. First Embodiment Next, a PHS terminal according to a first embodiment of the present invention will be described. In the second embodiment, the code storage unit 20 described above is used.
Stores a forced call code, a use stop code, and a use resume code which are input in advance by the owner and forcibly shift to the call mode when a call is received. When the owner loses his or her PHS terminal 6 or stolen it,
From the telephone capable of setting a call setting message, input the above forced call code and make a call. At this time, the forced call code is set to the subaddress of the call setup message and P
It is transmitted to the HS terminal 6. Further, the use stop code and the use resume code are transmitted to the PHS terminal 6 which has been passed to a third party by a tone signal during a call. The PHS terminal 6 compares the stop code or the restart code received by the tone signal with the stop code or the restart code stored in the code storage unit 20 in advance, and controls the operation according to the comparison result. I do.

B-1. Next, the operation of the above-described first embodiment will be described. In the following description, the operation of each unit involved in a call is the same as the operation of a normal terminal, and a description thereof will be omitted. Here, FIGS. 4 and 5 are flowcharts for explaining the operation of the PHS terminal according to the first embodiment.

First, in the event that the PHS terminal owned by the owner is lost or stolen, the owner first writes a forced call code together with the telephone number of the PHS terminal 6 in order to render the PHS terminal 6 unusable. Make a call by entering from the phone. The telephone number and the forced call code are transmitted after being set to the calling number and subaddress of the call setup message, respectively.

On the other hand, the PHS terminal determines in step S10 whether or not an incoming call has been received. When the incoming call is received, in step S12, the PHS terminal compares the compulsory call code stored in the code storage unit 20 with the subaddress. And step S
At 14, it is determined whether or not both match. If the two do not match, the process proceeds to step S16 to enter a normal incoming call operation.

On the other hand, if they match, the flow advances to step S18 to forcibly shift to a call. Here, the user who can write the phone confirms that the call has been transferred,
To suspend use of the PHS terminal, enter the suspend code with the dial button. To resume use,
Enter the activation code using the dial button. After the transition to the call, the PHS terminal waits for a tone signal from the other party to be transmitted in step S20, and receives the tone signal transmitted from the other party in step S22.
Then, the tone signal is compared with a use stop code stored in the code storage unit 20 in advance.

Then, if they match, the process proceeds to step S26 shown in FIG. 5, in which the subsequent key operations are invalidated, and the incoming call is terminated in step S34. Through the above processing, the user can directly set the PHS terminal to the unusable state without contacting the communication carrier, thereby preventing unauthorized use.

On the other hand, if they do not match, in step S28, the tone signal is compared with the use resumption code stored in the code storage unit 20 in advance, and in step S3
At 0, it is determined whether or not both match. If they do not match, the process returns to step S20 to wait for a tone signal from the other party. On the other hand, when both match, the process proceeds to step S32 shown in FIG. 5, and after the subsequent key operation is enabled, the process proceeds to step S34.
To end the incoming call. By the above processing, the user can directly set the PHS terminal to the usable state without contacting the communication carrier, and the use can be easily resumed.

As described above, in the first embodiment described above, if a phone is lost or stolen, a PHS terminal passed to a third party can be transmitted by an arbitrary telephone without contacting a communication carrier. It can be disabled or enabled. Also, in the case of disabling or enabling, when a call is made from another telephone to the PHS terminal and the call is forcibly shifted to a call, where a use stop code or a use resume code is received by a tone signal, Only the above-mentioned suspend code and resume code are accepted, so the data set in the sub-address by an incoming call from another person coincides with the suspend code or resume code and the PHS terminal cannot be used. And can be set to be usable.

C. Second Embodiment Next, a second embodiment of the present invention will be described. In the second embodiment, in a PHS terminal set to be unusable,
When there is an incoming call from another telephone, the fact that the PHS terminal is not at hand, the contact information of the owner, and the like are notified by a voice message. The voice message is recorded in advance by the owner and stored in the RAM 18 or the code storage unit 20 as digital data.

C-1. FIG. 6 is a flowchart for explaining the operation of the PHS terminal according to the second embodiment. First, when the PHS terminal owned by the user is lost or stolen, the PHS terminal is operated according to the operation described in the first embodiment.
The HS terminal 6 is set to be unusable.

On the other hand, the PHS terminal determines in step S40 whether or not an incoming call has been received, and upon receiving an incoming call, determines in step S42 whether or not the terminal is unusable.
If it is not in the unusable state, the process proceeds to step S44 to enter a normal incoming call operation. On the other hand, if the PHS terminal is unusable, the process proceeds to step S46, and the automatic response function notifies the other party by voice message that the PHS terminal is not presently at hand or the contact information of the owner.
In step S48, the call ends.

As described above, in the above-described second embodiment, when the terminal is set to be unusable, a call from an arbitrary telephone set indicates that the PHS terminal is not at hand and that the owner has no contact information. Because the other party is notified by voice message, unauthorized use can be prevented and return can be encouraged.

D. Third Embodiment Next, a third embodiment of the present invention will be described. In the third embodiment, the DB storage code previously stored by the owner is stored in the code storage unit 20 described above. If the owner has lost or stolen his PHS terminal 6,
The DB erasing code is input to and transmitted from the PHS terminal 6 that has passed to a third party from a telephone capable of setting a call setting message. At this time, the DB erasure code is set to the sub-address of the call setting message and transmitted to the PHS terminal 6. The PHS terminal 6 compares the DB erasure code set in the sub-address with the DB erasure code stored in the code storage unit 20 in advance, and controls the operation according to the comparison result.

D-1. Operation of Third Embodiment Here, FIG. 7 is a flowchart for explaining the operation of the PHS terminal according to the third embodiment. First, when the owner of the PHS terminal 6 is lost or stolen, the owner first sends the DB erasing code together with the telephone number of the PHS terminal 6 from the telephone to disable the PHS terminal 6. Enter and make a call. Phone number and DB
The erasure code is transmitted after being set to the calling number and subaddress of the call setup message, respectively.

On the other hand, the PHS terminal determines in step S50 whether or not an incoming call has been received, and upon receiving an incoming call, in step S52, compares the DB erase code stored in the code storage unit 20 with the subaddress. And step S
At 54, it is determined whether the two match. If they do not match, the process proceeds to step S56 to enter a normal incoming call operation. On the other hand, if they match, the process proceeds to step S58, and the personal information such as telephone directory data and various data is forcibly erased. Then, step S60
Then, the incoming call ends.

As described above, in the third embodiment described above, if the phone is lost or stolen, the telephone directory data and various data of the PHS terminal 6 passed to a third party can be transmitted to a third party by calling from an arbitrary telephone. Since the personal information is forcibly erased, the telephone directory, the address book, and the like stored in the main body cannot be used, and the unauthorized use can be prevented.

E. Fourth Embodiment Next, a fourth embodiment of the present invention will be described. In the fourth embodiment, the code storage unit 20 stores a use stop code and a use resumption code input by the owner in advance. When the owner loses or stolen his / her PHS terminal 6, the owner inputs the above-mentioned use stop code from a telephone capable of setting a call setup message and transmits the PHS terminal 6 to a third party. At this time, the use stop code is set to the subaddress of the call setup message and transmitted to the PHS terminal 6. The PHS terminal 6 compares the suspension code set in the sub-address with the suspension code stored in the code storage unit 20 in advance, and controls the operation according to the comparison result.

When the PHS terminal 6 whose use has been suspended returns to the owner, the use resume code is transmitted from a telephone capable of setting a call setup message so that the PHS terminal 6 can be used again. Enter and make a call. At this time, the use resume code is set to the subaddress of the call setup message and transmitted to the PHS terminal 6. PHS
The terminal 6 compares the use resumption code set in the sub-address with the use resumption code stored in the code storage unit 20 in advance, and controls the operation according to the comparison result.

E-1. 8 and 9 show a PHS according to the fourth embodiment.
5 is a flowchart for explaining the operation of the terminal. First, when the PHS terminal owned by the user is lost or stolen, the user sets the PHS terminal 6 from a telephone capable of setting a call setup message to disable the PHS terminal 6.
A use stop code is input together with the telephone number of the terminal 6 to make a call. The telephone number and the suspension code are transmitted after being set to the calling number and subaddress of the call setup message, respectively.

On the other hand, in the PHS terminal 6, step S70
Then, it is determined whether or not an incoming call is received.
In step 72, the sub-address is compared with the use stop code stored in the code storage unit 20 in advance, and the process proceeds to step S74.
Then, it is determined whether or not both match. If they match, the process proceeds to step S76, in which the subsequent key operation is invalidated.
After transmitting the personal information such as telephone directory data and various data stored in the network terminal to the originating terminal or the network management station 2 managing the communication network 1, the personal information is deleted. The transmission process of the personal information will be described later. Next, in step S86, the incoming call ends. With the above processing, the user can directly set the PHS terminal to the unusable state without contacting the communication carrier, and it is possible to prevent the personal information from being known or used by a third party.

On the other hand, if they do not match, in step S80 the use resumption code stored in the code storage unit 20 is compared with the subaddress, and in step S82, whether or not both match. Judge. And
If they match, the process proceeds to step S84 to enable the subsequent key operations, and then terminates the incoming call in step S86. By the above processing, the user can directly set the PHS terminal to the usable state without contacting the communication carrier, and the use can be easily resumed.

The sub address is stored in the code storage unit 20.
If it does not match any of the use stop code or enable code stored in advance in step S88
Then, the normal incoming call operation starts.

Next, the transmission process of the personal information described above will be described. In the transmission process of the personal information, first, in step S90 shown in FIG. 9, it is determined whether or not there is a transmission request for the sub-address. This is set to deactivate,
If the calling telephone (terminal) has a data receiving function, a transmission request for personal information is automatically set to the sub-address in addition to the use stop code, and the transmission is made. By determining whether there is a transmission request, This is because it is possible to recognize whether or not the calling terminal has a data receiving function.

Here, when there is a transmission request to the sub-address, in step S92, personal information such as telephone directory data and various data stored in the PHS terminal 6 is directly transmitted to the calling terminal. . The originating terminal receives the personal information transmitted from the PHS terminal 6 to a third party and stores it in a built-in or external storage medium or the like. PH
In the S terminal 6, when the transmission of the personal information ends, the process proceeds to step S96, where the personal information is deleted, and the process returns to the above-described process.

On the other hand, if there is no transmission request to the sub-address, it means that the call originated from a terminal having no data receiving function, and thus, in step S94, the telephone directory data and various data stored in the PHS terminal 6 are transmitted. Is transmitted to the network management station 2 that manages the communication line network 1. The network management station 2 temporarily stores the personal information transmitted from the PHS terminal 6 together with identification information for identifying the PHS terminal 6. When the transmission of the personal information is completed, the PHS terminal 6 proceeds to step S96 described above, deletes the personal information, and returns to the processing described above. In this case, P
Since the personal information of the HS terminal 6 is stored in the network management station 2, the owner may later receive the personal information stored in the network management station 2 by a terminal having a data receiving function.

As described above, in the above-described fourth embodiment, when a PHS terminal provided to a third party is disabled or enabled, the PHS terminal can be used from another telephone without contacting a communication carrier. By making it possible by making a call to the PHS terminal, when the PHS terminal is stolen, the owner can easily and quickly disable his / her own PHS terminal. In addition, since it is possible to return to use easily, it is possible to take measures to make it unusable, even if it is not known whether it is lost or stolen.
Furthermore, since personal information such as telephone directory data and various data of the PHS terminal 6 that has been transferred to a third party is forcibly transferred, the personal information can be reused and the personal information in the PHS terminal can be erased. As a result, the third party cannot use it, and illegal use can be prevented.

In the above-described first, third, or fourth embodiment, a specific forced call code, use stop code, use resume code, or DB erase code set for each PHS terminal is compared. Then, when they match, each function is operated. For example, each control code is a control code of a common specification (can be used in common by any PHS terminal), and when a call arrives, a caller is called. By comparing caller identification information for identifying a caller such as a number or a name, it is determined whether or not the instruction is directed to itself, and when the caller identification information matches, the instruction with the control code is performed. The function to be performed may be operated.

In this case, even if the use stop code is transmitted as the control code, if the caller identification information registered in advance is different, the function specified by the control code can be prevented from operating. As a result, the PHS is transmitted only from a legitimate sender (legal owner).
The operation of the terminal (unusable or usable) can be controlled.

In the above-described second embodiment, when a PHS terminal set to be unusable arrives, the owner information is notified by voice message. However, the present invention is not limited to this. Alternatively, the user may be able to listen to surrounding sounds, record the sounds, or have a conversation when a partner comes out.

[0057]

According to the first aspect of the present invention, when a control code transmitted from a partner terminal at the time of an incoming call is received by the receiving means, the control code and the first code stored in the code storage means are stored. The first determining means determines whether or not the control code and the control code match. If the control code and the control code match, the control means forcibly switches to the call operation, so that the communication terminal is stolen. In this case, there is an advantage that the owner can easily and quickly contact the current user of the communication terminal.

According to the second aspect of the present invention, when the tone signal transmitted from the originating terminal is received by the tone signal receiving means after the control means has shifted to the call operation, the tone signal is transmitted. And whether the second control code stored in the code storage means matches the second control code.
The key operation of the communication device is invalidated by the key operation control means when the two coincide with each other, so that if the communication terminal is stolen, the owner can easily and quickly perform the operation. Has the advantage that its own communication terminal can be disabled. Also,
There is an advantage that it is possible to prevent the control code and the use stop code from being accidentally coincident with each other and from being disabled or enabled.

According to the third aspect of the present invention, it is determined whether or not the tone signal received by the tone signal receiving means matches the third control code stored in the code storage means. Since the judgment is made by the judging means, and when both match, the key operation of the communication device is made effective by the key operation control means, so that there is an advantage that it can be easily returned to the usable state. In addition, since it is possible to easily return to use, there is an advantage in that even if it is not known whether it is lost or stolen, measures can be taken to make it unusable for the time being.

According to the fourth aspect of the present invention, when an incoming call is received in a state in which the key operation of the communication device is disabled, the voice control means records voice data or records voice data in accordance with an instruction from the calling terminal. Since it was made to play,
At present, the fact that the PHS terminal is not in the hands of the owner or the contact information of the owner is notified by voice message to the other party, so that unauthorized use can be prevented and return can be encouraged.

According to the fifth aspect of the present invention, the first to third control codes are set to subaddresses in a call setup message transmitted from a calling terminal when a line is connected. It is possible to obtain the advantage that the owner can easily set the unusable or usable state without changing the existing system or protocol.

According to the sixth aspect of the present invention, when the control code transmitted from the partner terminal at the time of an incoming call is received by the receiving means, the control code and the fourth control code stored in the code storage means are received. The personal information stored in the storage means is forcibly erased by the erasing means if the communication terminal is stolen. In this case, the telephone directory, the address book, and the like stored in the main body cannot be used, and the advantage that unauthorized use can be prevented can be obtained.

According to the seventh aspect of the present invention, the fourth control code is set to a sub-address in a call setup message transmitted from a calling terminal when a line is connected. The advantage that the owner can easily set the unusable or usable state without changing the system or the protocol is obtained.

According to the eighth aspect of the present invention, when the control code transmitted from the partner terminal at the time of the incoming call is received by the receiving means, the control code and the fifth control code stored in the code storage means are received. The personal information stored in the storage means is transmitted by the transmitting means if the two are coincident, so that the personal information can be used by another terminal. The advantage is that it can be

According to the ninth aspect of the present invention, when the determination means determines that the control code matches the fifth control code, the key operation control means controls the key operation of the input means. Is invalidated, so that if the communication terminal is stolen, etc., there is an advantage that unauthorized use can be prevented.

According to the tenth aspect of the present invention, the personal information transmitted by the transmitting means is received by the partner terminal when the partner terminal has a data receiving function, and the personal information is transmitted by the partner terminal. If the device does not have a data reception function, it is temporarily stored on the communication network.If the communication terminal is stolen, the telephone directory, address book, etc. stored in the main unit cannot be used. And the advantage that unauthorized use can be prevented.

In a preferred embodiment, the fifth control code is set to a sub-address in a call setup message transmitted from a calling terminal when a line is connected, for example. It is possible to obtain the advantage that the owner can easily set the unusable or usable state without changing the existing system or protocol.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration of a communication system according to an embodiment of the present invention.

FIG. 2 is a block diagram illustrating a configuration of a PHS terminal.

FIG. 3 is a conceptual diagram illustrating a call setup message.

FIG. 4 is a flowchart illustrating an operation of the PHS terminal according to the first embodiment of the present invention.

FIG. 5 is a flowchart illustrating an operation of the PHS terminal according to the first embodiment of the present invention.

FIG. 6 is a flowchart illustrating an operation of a PHS terminal according to a second embodiment of the present invention.

FIG. 7 is a flowchart illustrating an operation of a PHS terminal according to a third embodiment of the present invention.

FIG. 8 is a flowchart illustrating an operation of a PHS terminal according to a fourth embodiment of the present invention.

FIG. 9 is a flowchart illustrating an operation of a PHS terminal according to a fourth embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Communication network 2 Network management station 5, 5 Public base station 6, 6 PHS terminal 7 Telephone 10 Transmission / reception part (reception means, tone signal reception means) 11 Communication control part (reception means) 12 Audio processing part 13 Speaker 14 Microphone 15 Key input unit (input means) 16 control unit (key operation control means, key operation invalidation means,
Key operation validating means, first determining means, second determining means,
Control means, third determination means) 17 ROM 18 RAM 19 display section 20 code storage section (code storage section)

Claims (11)

[Claims] 1. A communication device carried by a user and communicating with another communication device via a communication network, comprising: code storage means for storing a first control code previously set by an owner of the terminal; Receiving means for receiving a control code transmitted from the partner terminal at the time of an incoming call; and determining whether the control code received by the receiving means matches the first control code stored in the code storage means. First judgment means for judging, and control means for forcibly transiting to a call operation when the first judgment means judges that the control code and the first control code match. Characteristic communication equipment. 2. The code storage means stores a second control code previously set by an owner of the terminal, and after a transition to a call operation by the control means, is transmitted from a terminal on the calling side. Tone signal receiving means for receiving a tone signal; and second determining whether or not the tone signal received by the tone signal receiving means matches the second control code stored in the code storage means. Determination means; and the key operation control means for invalidating a key operation of a communication device when the tone signal and the second control code are determined to match by the second determination means. The communication device according to claim 1. 3. The code signal storage means stores, in addition to the first control code and the second control code, a third control code previously set by an owner of the terminal. A third determination means for determining whether or not the tone signal received by the third control code and the third control code stored in the code storage means coincide with each other; and the key operation control means performs the third determination. 3. The communication device according to claim 1, wherein the key operation of the communication device is validated when it is determined by the means that the tone signal matches the third control code. 4. When an incoming call is received in a state in which the key operation of the communication device is disabled, according to an instruction of a calling terminal,
4. The communication device according to claim 1, further comprising voice control means for recording or reproducing voice data. 5. The method according to claim 1, wherein the first to third control codes are set to subaddresses in a call setup message transmitted from a terminal on the calling side when a line is connected. Communication equipment. 6. A communication device carried by a user and communicating with another communication device via a communication network, comprising: a storage unit for storing personal information of an owner; Code storing means for storing the control code of No. 4; receiving means for receiving the control code transmitted from the partner terminal at the time of an incoming call; and the control code received by the receiving means and the code stored in the code storing means. Determining means for determining whether the control code matches the fourth control code; and, when the determining means determines that the control code matches the fourth control code, the personal information stored in the storage means. And a erasing means for forcibly erasing the information. 7. The communication system according to claim 6, wherein the fourth control code is set to a subaddress in a call setup message transmitted from a terminal on the outgoing side when a line is connected.
Communication equipment as described. 8. A communication device carried by a user and communicating with another communication device via a communication network, comprising: a storage unit for storing personal information of an owner; Code storing means for storing the control code of No. 5, receiving means for receiving the control code transmitted from the partner terminal at the time of the incoming call, and the control code received by the receiving means and the code stored in the code storing means. Determining means for determining whether the control code matches the fifth control code; and, when the determining means determines that the control code matches the fifth control code, the personal information stored in the storage means. A communication device, comprising: a transmission unit that transmits the communication device. 9. An input means having a plurality of keys for performing a power operation, a telephone number input, and the like; and a key of said input means when said determination means determines that the control code matches the fifth control code. 9. The communication device according to claim 8, further comprising the key operation control unit for invalidating an operation. 10. The personal information transmitted by the transmitting means is received by the partner terminal when the partner terminal has a data receiving function, and is provided when the partner terminal does not have a data receiving function. The communication device according to claim 8, wherein the communication device is temporarily stored on the communication network. 11. The communication device according to claim 8, wherein the fifth control code is set to a subaddress in a call setup message transmitted from a calling terminal when a line is connected.