JP2003179962A - Search system, search server, portable terminal, and search object authenticating method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a search system, a search server, a portable terminal, and a search object authenticating method in which an identity can be confirmed when a search object is discovered. <P>SOLUTION: When starting the search of the search object, a search server SRV generates an identification code for uniquely identifying the relevant search and correspondently stores the portable terminal held by the search object and a terminal identification code for uniquely identifying a portable terminal held by a search executer. Then, the server SRV transmits the identification code to a portable terminal HP held by the search executer. When the search executer discovers the search object, the search executer operates the held portable terminal HP and transmits the identification code to the portable terminal HP held by the search object. The portable terminal HP held by the search object transmits the identification code to the search server SRV. The search server SRV authenticates the portable terminal HP transmitting the identification code and when the authentication is established, the establishment of the authentication is reported to the portable terminal held by the search executer. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a search system, a search server, a mobile terminal and a search for searching for a person using position information of a mobile terminal and confirming the identity of the person to be searched. The present invention relates to a target authentication method.

[0002]

2. Description of the Related Art Conventionally, a person, such as a physically or mentally handicapped person, an elderly person, or an infant, holds a portable terminal capable of obtaining positional information and uses the positional information of the portable terminal for the purpose of protecting a person's identity when disappearing. The technology is known. When the target person disappears, a third party institution such as a care support center may be requested to protect the person being searched. In this case, personal information such as the photograph of the person to be searched, age, and sex is distributed to a third-party organization and used as an aid for specifying the person to be searched.

[0003]

However, in identifying the search target person, the third party organization generally does not actually know the search target person in many cases. Therefore, even if an employee of a third-party organization obtains image data showing the appearance of the person being searched for using a mobile terminal, for example, the hairstyle is different from the image data, or the impression of clothing on the day is displayed. Due to various reasons such as the fact that the data differs greatly, it was sometimes difficult to obtain proof that the person was the actual person at the stage of the actual searchee discovery.

In view of such circumstances, the present invention is a search system capable of confirming the identity of a person to be searched,
An object is to provide a search server, a mobile terminal, and a search target authentication method.

[0005]

In order to solve the above problems, the present invention provides a plurality of first mobile terminals held by a plurality of searchers and a plurality of search targets held by a plurality of search targets to be searched. In a search system including a second mobile terminal of No. 1 and a search server communicable with the first and second mobile terminals, the search server is configured to perform a search for a certain second mobile terminal. A storage unit for generating a request identification code for uniquely identifying the search request, and storing the request identification code and a terminal identification code for uniquely identifying the plurality of second mobile terminals in association with each other. Section, a transmitting section for transmitting the request identification code to the first mobile terminal, the request identification code and the terminal identification code in the second section.
When the request identification code and the terminal identification code are received from the receiving unit that receives the request identification code and the terminal identification code from the second mobile terminal, the received request identification code and the terminal identification code are stored in the storage unit. A comparison unit for comparing the request identification code and the terminal identification code with each other, and an authentication unit for authenticating that the search target holding the second mobile terminal is valid based on the comparison result of the comparison unit. The first mobile terminal includes a receiving unit that receives the request identification code from the search server, a storage unit that stores the request identification code, and the request identification code based on a predetermined operation of the searcher. The second mobile terminal includes a receiving unit that receives the request identification code by short-distance wireless communication, and a transmitting unit that transmits by short-distance wireless communication. Further comprising a transmitter which transmits the request identification code and the terminal identification code to provide a search system characterized.

The present invention also includes a plurality of first mobile terminals held by a plurality of searchers, a plurality of second mobile terminals held by a plurality of search targets scheduled to be searched, and the first and the second mobile terminals. In a search system including a search server capable of communicating with a second mobile terminal, the search server is a request identification code that uniquely identifies the search request when a search for a certain second mobile terminal is requested. A storage unit that stores the request identification code and the terminal identification code for uniquely identifying the plurality of second mobile terminals in association with each other; A transmitter for transmitting to the mobile terminal, a receiver for receiving the request identification code and the terminal identification code from the second mobile terminal, and a request identification code and the terminal identification code from the second mobile terminal. Received In this case, a comparison unit that compares the received request identification code and terminal identification code with the request identification code and the terminal identification code stored in the storage unit, and the second unit based on the comparison result of the comparison unit. And an authentication unit that authenticates that the search target holding the mobile terminal is valid, and the first mobile terminal receives the request identification code from the search server and the request identification code. The second mobile terminal includes a storage unit that stores the display and a display unit that displays the request identification code read from the storage unit based on a predetermined operation of the searcher. A storage unit that stores the corresponding terminal identification code, an input unit that receives a user's input instruction, the searcher operates the input unit to input the request identification code, and A search system, comprising: a transmission unit that transmits the request identification code and the terminal identification code to the search server when an instruction to transmit the input request identification code is input to the search server. To do.

Further, according to the present invention, a plurality of first mobile terminals held by a plurality of searchers, a plurality of second mobile terminals held by a plurality of search targets scheduled to be searched, and the first and second In a search system including a search server capable of communicating with a second mobile terminal, the search server authenticates each of the second mobile terminals with a terminal identification code for identifying each of the second mobile terminals. A storage unit that stores the authentication code for performing the authentication and a set of a private key and a public key corresponding to each authentication code, and the authentication code is encrypted by encrypting the authentication code with the private key corresponding to the authentication code. An encryption unit that creates an authentication code and the encrypted authentication code are transmitted in advance to each of the plurality of second mobile terminals, and when a search for a certain second mobile terminal is requested, the second Mobile phone A transmitting unit that transmits the public key corresponding to the authentication code at the end to the first mobile terminal; a receiving unit that receives the authentication code and the terminal identification code from the second mobile terminal; When the authentication code and the terminal identification code are received from the portable terminal, the comparison unit that compares the received authentication code and the terminal identification code with the stored content of the storage unit, and the comparison result of the comparison unit An authentication unit that authenticates that the search target holding the second mobile terminal is valid based on the first mobile terminal, and the first mobile terminal receives the public key from the search server; The second mobile terminal includes: a storage unit that stores a public key; and a transmission unit that transmits the public key to the second mobile terminal by short-range wireless communication based on a predetermined operation of the searcher. A receiving unit that receives the encrypted authentication code from the search server and receives the public key from the first mobile terminal via short-range wireless communication; a storage unit that stores the encrypted authentication code; A decryption unit that decrypts the encrypted authentication code stored in the storage unit using a public key, the terminal identification code, and the authentication code obtained by decrypting the encrypted authentication code. A search system, comprising: a transmission unit that transmits to the search server.

The present invention also provides a plurality of first mobile terminals held by a plurality of searchers, a plurality of second mobile terminals held by a plurality of search targets scheduled to be searched, and the first and the second mobile terminals. In a search system including a search server capable of communicating with a second mobile terminal, the search server authenticates each of the second mobile terminals with a terminal identification code for identifying each of the first mobile terminals. A storage unit that stores the authentication code for performing the authentication and a set of a private key and a public key corresponding to each authentication code, and the authentication code is encrypted by encrypting the authentication code with the private key corresponding to the authentication code. An encryption unit that creates an authentication code and the encrypted authentication code are transmitted in advance to each of the plurality of second mobile terminals, and when a search for a certain second mobile terminal is requested, the second Mobile phone A transmission unit for transmitting the public key corresponding to the authentication code at the end to the first mobile terminal, and the terminal identification code and the encrypted authentication code of the first mobile terminal from the first mobile terminal. A receiving unit for receiving the authentication code obtained by decrypting, and a comparing unit for comparing the terminal identification code and the authentication code received from the first mobile terminal with the stored contents of the storage unit, An authentication unit that authenticates that the search target holding the second mobile terminal is valid based on the comparison result of the units,
The first mobile terminal receives the public key from the search server and sends the encrypted authentication code to the second authentication terminal.
A receiving unit for receiving from the mobile terminal, a storage unit for storing the public key, a decrypting unit for decrypting the encrypted authentication code using the public key, and a predetermined operation by the searcher, While transmitting a request signal requesting transmission of an encrypted authentication code to the second mobile terminal by short-range wireless communication, the terminal identification code and the authentication code obtained by decrypting the encrypted authentication code Is transmitted to the search server, the second mobile terminal receives the encrypted authentication code from the search server, and transmits the request signal to the short-range wireless communication from the first mobile terminal. A receiving unit for receiving by communication, a storage unit for storing the encrypted authentication code, and the short-distance wireless communication for the encrypted authentication code to the first mobile terminal based on the request signal. Further comprising a transmitter which transmits Te provides a search system characterized.

In a preferred embodiment, the terminal identification code is the telephone number of the second mobile terminal, the terminal ID number uniquely assigned to the second mobile terminal, or the second mobile terminal. It is at least one of the assigned electronic mail addresses.

In another preferred aspect, the terminal identification code is the telephone number of the first mobile terminal, the terminal ID number uniquely assigned to the first mobile terminal, or the first mobile terminal. Is at least one of the electronic mail addresses uniquely assigned to.

In another preferred aspect, the search server sends a notification signal for notifying the discovery of the search target when the search target holding the second mobile terminal is authenticated as valid. A notification signal transmission unit for transmitting to the first mobile terminal is further provided.

[0012] In another preferred aspect, the search server sends a notification signal for notifying the discovery of the search target when it is authenticated that the search target holding the second portable terminal is valid. It further comprises a notification signal transmitting unit for transmitting to the first mobile terminal or the second mobile terminal.

[0013] In another preferred aspect, the search server further comprises a request terminal for transmitting a request signal for requesting a search for the second portable terminal, and when the request signal is received from the request terminal, The first mobile terminal is instructed to search for the second mobile terminal requested to be searched.

In another preferred embodiment, the search server sends a notification signal for notifying the discovery of the search target when the search target holding the second mobile terminal is authenticated as valid. A notification signal transmission unit for transmitting to the requesting terminal is further provided.

The present invention provides a search system comprising a plurality of first mobile terminals held by a plurality of searchers and a plurality of second mobile terminals held by a plurality of search targets scheduled to be searched. Generated by the search server used to communicate with the first and second mobile terminals, when a search for a certain second mobile terminal is requested, a request identification code for uniquely identifying the search request is generated. Section, a storage section that stores the request identification code and a terminal identification code for uniquely identifying the plurality of second mobile terminals in association with each other, and transmits the request identification code to the first mobile terminal. And a receiving unit that receives the request identification code and the terminal identification code from the second mobile terminal, and the request identification code and the terminal identification code from the second mobile terminal, A comparison unit for comparing the request identification code and the terminal identification code thus received, and the request identification code and the terminal identification code stored in the storage unit,
A search server, comprising: an authentication unit that authenticates that a search target holding the second mobile terminal is valid based on a comparison result of the comparison unit.

The present invention also provides a search system comprising a plurality of first mobile terminals held by a plurality of searchers and a plurality of second mobile terminals held by a plurality of search targets scheduled to be searched. A search server that is used and is capable of communicating with the first and second mobile terminals, for identifying each of the second mobile terminals and for authenticating each of the second mobile terminals. A storage unit that stores the authentication code and a set of a private key and a public key corresponding to each authentication code in association with each other, and the authentication code is encrypted by the private key corresponding to the authentication code to obtain an encrypted authentication code. The encryption unit to be created and the encrypted authentication code are transmitted in advance to each of the plurality of second mobile terminals,
A transmission unit that transmits the public key corresponding to the authentication code of the second mobile terminal to the first mobile terminal when a search for the second mobile terminal is requested; A receiving unit that receives the authentication code and the terminal identification code from a terminal, and when the authentication code and the terminal identification code are received from the second mobile terminal, the received authentication code and the terminal identification code are received. A comparison unit that compares the stored contents of the storage unit with each other; and an authentication unit that authenticates that the search target holding the second mobile terminal is valid based on the comparison result of the comparison unit. To provide a search server.

Further, the present invention provides a search system comprising a plurality of first mobile terminals held by a plurality of searchers and a plurality of second mobile terminals held by a plurality of search targets scheduled to be searched. A search server which is used and is capable of communicating with the first and second mobile terminals, uses a terminal identification code for identifying each of the first mobile terminals and an authentication code for authenticating each of the second mobile terminals. A storage unit that stores the authentication code and a set of a private key and a public key corresponding to each authentication code in association with each other, and encrypts the authentication code with the private key corresponding to the authentication code to obtain an encrypted authentication code. The encryption unit to be created and the encrypted authentication code are transmitted in advance to each of the plurality of second mobile terminals,
A transmitter for transmitting the public key corresponding to the authentication code of the second mobile terminal to the first mobile terminal when a search for the certain second mobile terminal is requested; A receiving unit for receiving from the terminal the terminal identification code of the first mobile terminal and the authentication code obtained by decrypting the encrypted authentication code, and the terminal identification code received from the first mobile terminal. And a comparing unit that compares the authentication code with the stored content of the storage unit, and an authenticating unit that authenticates that the search target holding the second mobile terminal is valid based on the comparison result of the comparing unit. Provided is a search server characterized by comprising.

[0018] In a preferred aspect, the search server of the present invention corresponds to the second portable terminal for which the authentication is established, when the authentication that the search target holding the second portable terminal is valid is established. The authentication code and a pair of a private key and a public key corresponding to the authentication code are regenerated, the regenerated authentication code and the pair of the private key and the public key are stored, and the authentication code is associated. The encrypted authentication code obtained by encrypting with the secret key is transmitted to the second mobile terminal that has been authenticated,
The portable terminal replaces the encrypted authentication code newly received from the search server with the encrypted authentication code used for the authentication and stores it.

In another preferred aspect, the terminal identification code is the telephone number of the second mobile terminal, the terminal ID number uniquely assigned to the second mobile terminal, or the second mobile terminal. Is at least one of the electronic mail addresses uniquely assigned to.

In another preferred embodiment, the terminal identification code is the telephone number of the first mobile terminal, the terminal ID number uniquely assigned to the first mobile terminal, or the first mobile terminal. Is at least one of the electronic mail addresses uniquely assigned to.

[0021] In another preferred embodiment, the search server of the present invention is a notification for notifying the discovery of the search target when it is authenticated that the search target holding the second portable terminal is valid. The system further comprises a notification signal transmission unit that transmits a signal to the first mobile terminal.

In another preferred aspect, the search server of the present invention notifies the discovery of the search target when it is authenticated that the search target holding the second portable terminal is valid. It further comprises a notification signal transmitting unit that transmits a signal to the first mobile terminal or the second mobile terminal.

In another preferred aspect, the search server of the present invention is connected to a request terminal that transmits a request signal requesting a search for the second mobile terminal, and receives the request signal from the request terminal. , Instructing the first mobile terminal to search for the second mobile terminal requested to be searched.

[0024] In another preferred aspect, the search server of the present invention notifies the discovery of the search target when it is authenticated that the search target holding the second portable terminal is valid. A notification signal transmission unit for transmitting a signal to the request terminal is further provided.

Then, the present invention relates to a portable terminal for searching a searched terminal as a search target based on a command from the search server, when the search for the searched terminal is requested from the search server. A receiving unit that receives a request identification code that uniquely identifies a search request for the searched terminal from the search server, a storage unit that stores the received request identification code, and the stored request identification code in the searched terminal. Provided is a mobile terminal, comprising: a transmitter that transmits by short-range wireless communication.

Further, according to the present invention, in a mobile terminal searched based on a command from a search server, a request identification code for uniquely identifying a search request for the mobile terminal itself is provided close to a search terminal searching for the mobile terminal itself. A mobile terminal comprising: a receiving unit for receiving by distance wireless communication; a transmitting unit for transmitting the terminal identification code capable of uniquely identifying the mobile terminal itself and the received request identification code to the search server. provide.

Further, according to the present invention, a public key associated with an authentication code for authenticating the search target terminal in a portable terminal searching for a search target terminal to be searched based on a command from a search server. A receiving unit for receiving from the search server, a storage unit for storing the received public key,
A mobile terminal, comprising: a transmitter that transmits the stored public key to the searched terminal by short-range wireless communication based on a predetermined operation of the searcher.

Further, according to the present invention, in a portable terminal searched based on a command from a search server, an authentication code for authenticating each of the searched terminals is encrypted by the secret key corresponding to the authentication code. The obtained encrypted authentication code is associated with a first receiving unit that receives from the search server, a storage unit that stores the encrypted authentication code, and an authentication code for authenticating the searched terminal. A second receiving unit that receives a public key from the search terminal by short-range wireless communication; a decryption unit that decrypts the encrypted authentication code stored in the storage unit using the public key; and a mobile terminal It is characterized by including a terminal identification code capable of uniquely identifying itself and a transmission unit for transmitting the authentication code obtained by decrypting the encrypted authentication code to the search server. To provide a mobile terminal to be.

Further, according to the present invention, a public key associated with an authentication code for authenticating the search target terminal in a mobile terminal searching for a search target terminal to be searched based on a command from a search server. Is received from the search server, a storage unit for storing the public key, and an authentication code for authenticating each of the searched terminals are encrypted by the secret key corresponding to the authentication code. A second receiving unit that receives the obtained encrypted authentication code from the searched terminal, a decryption unit that decrypts the encrypted authentication code by using the public key, and requests transmission of the encrypted authentication code. The request signal is transmitted to the searched terminal by short-range wireless communication, and the terminal identification code and the authentication code obtained by decoding the encrypted authentication code are searched for. To provide a mobile terminal comprising: a transmission unit that transmits to over server.

Further, according to the present invention, in a portable terminal searched based on a command from a search server, an authentication code for authenticating each of the searched terminals is encrypted by the secret key corresponding to the authentication code. A first receiving unit that receives the obtained encrypted authentication code from the search server, a storage unit that stores the encrypted authentication code, and a request signal that requests transmission of the encrypted authentication code are transmitted from the search terminal. A mobile terminal comprising: a second receiving unit that receives by distance wireless communication; and a transmitting unit that transmits the encrypted authentication code to the search terminal by short distance wireless communication based on the request signal. provide.

In a preferred embodiment, the terminal identification code is at least one of a telephone number of the mobile terminal, a terminal ID number uniquely assigned to the mobile terminal, or an electronic mail address uniquely assigned to the mobile terminal. There is one.

In the present invention, a plurality of first mobile terminals held by a plurality of searchers, a plurality of second mobile terminals held by a plurality of search targets scheduled to be searched, and the first and second In a search target authentication method used in a search system including a search server capable of communicating with a second mobile terminal,
The search server stores in advance a terminal identification code for uniquely identifying the plurality of second mobile terminals, and the search server is requested to search for a certain second mobile terminal,
A request identification code that uniquely identifies the search request is generated, the search server stores the request identification code and the terminal identification code corresponding to the search request in association with each other, and the search server uses the request. The identification code is the first
When receiving the request identification code from the search server, the first mobile terminal stores the request identification code, and the first mobile terminal is based on a predetermined operation of the searcher. And transmits the request identification code to the second mobile terminal by short-distance wireless communication, and the second mobile terminal receives the request identification code by short-distance wireless communication and the request identification code and the second The terminal identification code of the mobile terminal is transmitted to the search server, and when the search server receives the request identification code and the terminal identification code, the search server compares the received request identification code and the terminal identification code with the stored contents. The search server authenticates that the search target holding the second mobile terminal is valid based on the result of the comparison. To provide a search target authentication method.

Further, according to the present invention, a plurality of first mobile terminals held by a plurality of searchers, a plurality of second mobile terminals held by a plurality of search targets scheduled to be searched, and the first and second In a search target authentication method used in a search system including a search server capable of communicating with a second mobile terminal, the search server uses a terminal identification code for uniquely identifying the plurality of second mobile terminals. Stored in advance, the search server generates a request identification code that uniquely identifies the search request when a search for a certain second mobile terminal is requested,
The search server stores the request identification code and the terminal identification code corresponding to the search request in association with each other,
The search server transmits the request identification code to the first mobile terminal, and the first mobile terminal stores the request identification code when receiving the request identification code from the search server, The mobile terminal displays the request identification code based on a predetermined operation of the searcher, and when the searcher discovers the search target, the second mobile terminal is based on a predetermined operation of the searcher. Transmits the request identification code and the terminal identification code to the search server, and when the search server receives the request identification code and the terminal identification code, stores the received request identification code and the terminal identification code. In comparison with the contents, the search server authenticates that the search target holding the second mobile terminal is valid based on the result of the comparison. To provide a search target authentication method.

Further, according to the present invention, a plurality of first mobile terminals held by a plurality of searchers, a plurality of second mobile terminals held by a plurality of search targets scheduled to be searched, and the first and second In a search target authentication method used in a search system including a search server capable of communicating with a second mobile terminal, the search server includes a terminal identification code for identifying each of the second mobile terminals, and The authentication code for authenticating each of the two mobile terminals and the pair of the private key and the public key corresponding to each authentication code are stored in association with each other, and the search server stores in each of the plurality of second mobile terminals. , The encrypted authentication code obtained by encrypting the authentication code with the corresponding secret key is transmitted in advance, and the second mobile terminal stores the encrypted authentication code received from the search server, When the search for the second mobile terminal is requested, the search server refers to the stored contents and obtains the public key corresponding to the authentication code of the second mobile terminal that has made the search request as the first mobile terminal. When transmitting to the terminal, the first mobile terminal stores the public key when receiving the public key from the search server, and the first mobile terminal stores the public key based on a predetermined operation of the searcher. When the public key is transmitted to the second mobile terminal via short-range wireless communication, and the second mobile terminal receives the public key via short-range wireless communication, the second mobile terminal stores the public key in advance using the received public key. Decrypting the encrypted authentication code that is present, the second mobile terminal transmits the decrypted authentication code and the terminal identification code of the second mobile terminal to the search server, and the search server , Decrypted When serial receiving the authentication code and the terminal identification code, the authentication code and the terminal identification code and the received comparison with stored content, the search server based on the result of said comparison,
There is provided a search object authentication method characterized by authenticating that a search object holding the second mobile terminal is valid.

Further, according to the present invention, a plurality of first mobile terminals held by a plurality of searchers, a plurality of second mobile terminals held by a plurality of search targets scheduled to be searched, and the first and second In a search target authentication method used in a search system including a search server capable of communicating with a second mobile terminal, the search server includes a terminal identification code for identifying each of the first mobile terminals; The authentication code for authenticating each of the two mobile terminals and the pair of the private key and the public key corresponding to each authentication code are stored in association with each other, and the search server stores in each of the plurality of second mobile terminals. , The encrypted authentication code obtained by encrypting the authentication code with the corresponding secret key is transmitted in advance, and the second mobile terminal stores the encrypted authentication code received from the search server, When the search for the second mobile terminal is requested, the search server refers to the stored contents and obtains the public key corresponding to the authentication code of the second mobile terminal that has made the search request as the first mobile terminal. A request signal for transmitting to the terminal, the first mobile terminal stores the public key, and the first mobile terminal requests transmission of the encrypted authentication code based on a predetermined operation of the searcher. To the second mobile terminal by short-distance wireless communication, and when the second mobile terminal receives the request signal, the second mobile terminal sends the previously stored encrypted authentication code to the first mobile terminal. When transmitting by distance wireless communication, the first mobile terminal receives the encrypted authentication code, decrypts the encrypted authentication code using the public key, and the first mobile terminal is decrypted. Said authorization code and said The terminal identification code of the portable terminal of the mobile terminal is transmitted to the search server, and the search server receives the decrypted authentication code and the terminal identification code, and stores the received authentication code and the terminal identification code. In comparison with the contents, the search server provides a search object authentication method characterized by authenticating that the search object holding the second mobile terminal is valid based on the result of the comparison.

In a preferred mode, when the authentication that the search target holding the second mobile terminal is valid is established, the search server corresponds to the second mobile terminal for which the authentication is established. An authentication code and a set of a private key and a public key corresponding to the authentication code are regenerated, and the search server stores the regenerated authentication code and the set of the private key and the public key, and the search server Transmits the encrypted authentication code obtained by encrypting the authentication code with the corresponding secret key, to the second mobile terminal that has succeeded in the authentication, and the second mobile terminal is updated by the search server. The encrypted authentication code received in step 1 is replaced with the encrypted authentication code used for the authentication and stored.

In another preferred aspect, the terminal identification code is the telephone number of the second mobile terminal, the terminal ID number uniquely assigned to the second mobile terminal, or the second mobile terminal. Is at least one of the electronic mail addresses uniquely assigned to.

[0038] In another preferred embodiment, the terminal identification code is the telephone number of the first mobile terminal, the terminal ID number uniquely assigned to the first mobile terminal, or the first mobile terminal. Is at least one of the electronic mail addresses uniquely assigned to.

[0039] In another preferred aspect, the search server notifies the discovery of the search target when the authentication that the search target holding the second mobile terminal is valid is established. Is transmitted to the first mobile terminal.

[0040] In another preferred aspect, the search server notifies the discovery of the search target when the authentication that the search target holding the second portable terminal is valid is established. Is transmitted to the second mobile terminal.

In another preferred embodiment, the search server is connected to a request terminal that transmits a request signal for requesting a search for the second mobile terminal, and the request terminal is
The request signal is transmitted to the search server based on a predetermined operation of the request terminal user, and the search server starts the search for the second mobile terminal when the request signal is received.

Further, in another preferred aspect, the search server notifies the discovery of the search target when the authentication that the search target holding the second portable terminal is valid is established. Is transmitted to the request terminal.

[0043]

BEST MODE FOR CARRYING OUT THE INVENTION <1. First Embodiment><1-1. Configuration of First Embodiment> FIG. 1 is a diagram showing the overall configuration of a searcher confirmation system SYS of the present invention. Figure 1
As shown in FIG. 2, the searcher confirmation system SYS includes mobile terminals HP1 to HPn (n = natural number, hereinafter, referred to as mobile terminal HP if it is not necessary to distinguish individual devices).
It comprises a mobile communication network NET, a search center CTR, and a personal computer PC.

The portable terminal HP is, for example, a PHS (Personal).
Handyphone System) and other mobile terminals. The mobile terminal HP communicates via the mobile communication network NET. In addition, the mobile terminal HP has a short-range wireless communication function, and the mobile terminals HP can communicate with each other without going through the mobile terminal network NET.

FIG. 2 is a block diagram showing the electrical configuration of the mobile terminal HP. As shown in FIG. 2, the mobile terminal HP
Is a transmission / reception unit 10, a CPU 11, a RAM 12, and an R
An OM 13, a storage unit 14, a display unit 15, a voice input / output unit 16, and an input unit 17 are provided.

The transmitting / receiving unit 10 is an interface when the mobile terminal HP performs wireless communication. The transmitter / receiver 10
For example, it has a function of tuning to a plurality of carriers such as 50 KHz and 2.45 GHz and demodulating a signal. Similarly, it is also possible to modulate a signal to a plurality of carriers such as 50 KHz or 2.45 GHz and transmit it. Therefore, the mobile terminal H is transmitted via the transmission / reception unit 10.
It is also possible for P to communicate with other mobile terminals HP via the base station BS, and between mobile terminals HP, for example, Blueto
It is also possible to perform communication according to a short-range wireless standard such as oth (registered trademark).

The CPU 11 centrally controls the portable terminal HP based on various programs stored in the ROM 13 while using the RAM 12 as a temporary work area. In addition to various programs for controlling the CPU 11, the ROM 13 stores a telephone number NM used when communicating with the mobile terminal HP.

The storage unit 14 is an area for storing various data exchanged by the mobile terminal HP. The display unit 15 displays, for example, selection screens in various control programs, image data, and the like. The voice input / output unit 16 includes a D / A converter, functions as a reception unit in communication via the base station BS of the mobile terminal HP, converts the voice data into analog, and emits sound. In addition, it is possible to transmit a voice signal from the mobile terminal HP to another mobile terminal HP via the voice input / output unit 16. The respective units provided in the mobile terminal HP are connected to each other via the system bus SB.

The input section 17 is provided with a button (not shown). The user can access the mobile device HP via this button.
It is possible to input arbitrary data to or to execute a predetermined program.

Next, the mobile communication network NET will be described. As shown in FIG. 1, the mobile communication network NET includes a plurality of base stations BS1 to BSm (m = natural number, hereinafter, referred to as a base station BS when it is not necessary to distinguish individual base stations) and a switchboard. The SW and the home memory HM are provided.

Although not shown, the mobile communication network NET is provided with a plurality of exchanges SW, and each exchange SW is connected via the exchange network SBN. Further, a plurality of base stations BS are connected to the exchange SW to perform wireless communication with the mobile terminal HP. And
The base station BS intermittently transmits a polling signal of a predetermined frequency on which a base station identification code CSID that is a code uniquely indicating the base station BS is superimposed.

The mobile terminal HP receives the polling signal from a plurality of base stations BS. And the mobile terminal HP
Is the base station BSj (j = natural number, j ≦ n) corresponding to the signal with the highest electric field strength among the received polling signals.
To send a response signal. The response signal includes the base station identification code CSID indicating the base station BS and the mobile terminal H.
The telephone number NM of P is superimposed. Mobile terminal HP
Is the exchange SW to which the base station BS selected here is connected.
Will be in the area.

In the above, the base station identification code CSID and the telephone number NM of the mobile terminal HP included in the signal transmitted by the mobile terminal HP are stored in the home memory H via the exchange SW and the exchange network SBN.
Sent to M. The home memory HM stores a location table TBa (not shown), which is a database showing a list of current location areas of each of the plurality of mobile terminals HP. When the correspondence between the telephone number NM of the mobile terminal HP and the base station identification code CSID is changed, the home memory HM changes the existing area table TBa at any time. As a result, the existing area table TBa reflects the current existing area of all the mobile terminals HP that communicate using the mobile communication network NET.

Further, the home memory HM has, for example, S
An agent AGT, which is a resident program that executes commands such as QL (Structured Query Language), is being executed. By transmitting a character string indicating a predetermined command to this agent AGT, the location table TB is transmitted.
a can be referred to from outside the mobile communication network NET. The exchange network SBN is connected to a search center CTR via an access router (not shown). Therefore, the search center CTR can refer to the location table TBa stored in the home memory HM.

As shown in FIG. 1, the search center CTR
Is a database server DB, a search server SRV,
And an access server AS. Each server is connected to the network and can communicate. Further, the search server SRV includes a transmission / reception unit (not shown), and the transmission / reception unit can communicate with the mobile terminal HP.

The search server SRV requests the agent AGT of the home memory HM to execute a command for extracting a record satisfying a desired condition from the table stored in the home memory HM, and selects an arbitrary mobile phone from the existing table TBa. The data indicating the current position of the terminal HP is acquired. The search server SRV also extracts records and files that meet desired conditions from the database server DB described below. Further, search server SRV generates an identification code ID, which is data such as a random number, according to a predetermined program stored in a storage unit (not shown). Further, the search server SRV compares the data transmitted and received via the transmission / reception unit and performs authentication based on the comparison.

The database server DB has a table area TB and a file area FL. Various tables that make up the database are stored in the table area TB, and various files are stored in the file area. FIG. 3 is a conceptual diagram showing a table stored in the database server DB. As shown in FIG. 3, the table area TB includes a personal information table TBp and a searcher table TBs, and the file area FL includes an image directory DRp and an audio directory DRv.

The personal information table TBp has a plurality of records. This record is personal information table TBp
Created for each searchee registered in. Each record includes a plurality of fields. The field stores various data that uniquely identifies an individual and indicates the attribute of the individual. In the present embodiment, each record has a telephone number field NO.
1. Name field NAME, Gender field SEX,
Age field AGE, height field HIGHT, appearance field TYPE, image pass field PHOT
O and voice path field VOICE fields.

In the telephone number field NO1, data indicating the telephone number NM of the portable terminal HP to be held by the searchee is stored. The name field NAME stores data indicating the name of the search target person. Gender field SE
Data indicating the sex of the search target person is stored in X. The age field AGE stores data indicating the age of the search target person. The height field HIGHT stores data indicating the height of the search target person. Appearance field T
In the YPE, data indicating the person's appearance, such as thin type and thick type, is stored.

Then, in the image path field PHOTO, an image file F such as a face photograph showing the near shadow of the person being searched for is displayed.
Data indicating a storage position of Lp, a so-called path, is stored. The image file FLp is stored in a predetermined position of the image directory DRp, and each image file FLp can be uniquely identified by the file name. This image file FLp is, for example, PNG (Po
rtable Network Graphics), etc., and is sent to the search executor when searching for a search target person.

Similarly, the voice path field VOICE stores data indicating a so-called path, which is a storage position of the voice file FLv such as a voice of a close relative of the searchee calling for the searchee. The audio file FLv is stored in a predetermined position of the audio directory DRv, and each audio file FLv can be uniquely identified by the file name. This audio file FLv is, for example, MP3 (MPEG
-1 Audio Layer-III), etc., and is sent to the search executor when searching for the search target person.

The searcher table TBs is a table in which a third party organization for searching for a disappeared person is registered. The searcher table TBs has a plurality of records, and each record has a plurality of fields. Here, the plurality of fields are the location field LC and the telephone number field NO2. In the location field LC, data indicating the base station identification code CSID of the base station corresponding to the location position of the institution to be searched is stored. In the telephone number field NO2, the portable terminal H that the searcher should hold
Data indicating the telephone number NM of P is stored.

The search execution table TBr is a table used at the time of search execution, and stores data required for authentication when a search target person is found. The search execution table TBr has a plurality of records, and each record has a plurality of fields. Here, the plurality of fields means a searched number field NO3, a searched number field NO4,
And the identification code ID. The initial value of each field is an empty character string.

In the searched number field NO3, the telephone number NM of the mobile terminal HP to be held by the disappearing person who is currently searching.
Is stored. That is, the searched number field NO3 stores the data of the telephone number field NO1 in the record corresponding to the searched person in the above-mentioned personal information table TBp. Similarly, in the searcher number field NO4, the phone number NM of the mobile terminal HP that is to be searched for but is to be held, that is, the phone number field NO2 of the record corresponding to the searcher in the searcher table TBs. Data is stored. Further, the identification code field IDf stores data indicating the identification code ID generated by the search server SRV.

Next, the access server AS, for example, RA
Authentication processing of dial-up connection is performed by an authentication protocol such as DIUS (Remote Access Dial In User Services). The user can use various services provided by the search system SYS only when the authentication with the access server AS is established. In the present embodiment, it is assumed that the user of the search system SYS is given a user name and password required for authentication by the access server AS by performing a predetermined procedure in advance.

The personal computer PC is a computer device used by the user when using the search system SYS. The personal computer PC can be dialed up to the access server AS via a modem, a TA (Terminal Adapter) or the like.
Further, the personal computer PC includes a browser program used when browsing the website.

In this embodiment, various files stored in the image directory DRp and the audio directory DRv are, for example, FTP (File Transfer Protocol).
The user can upload to a predetermined area of the database server DB according to a protocol such as ocol). Therefore, the user of the search system SYS can update the image file FLp and the audio file FLv at any time. Further, the database server DB detects when the files stored in the image directory DRp and the audio directory DRv are changed, updates the personal information table TBp, and synchronizes the table and the directory.

<1-2. Operation of First Embodiment> Next, the operation of the first embodiment will be described. For convenience of description, in the following description, the person to be searched is assumed to be the search target person A, and the search target person A holds the mobile terminal HPj. A user B requests a search from the personal computer PC when the searchee A disappears. Then, it is assumed that the person who searches the person A to be searched for at the request of the user B is the search executor C, and the search executor C holds the mobile terminal HPk. It is assumed that the user B has previously acquired a user name and password for using the search system SYS by performing a predetermined procedure.

<1-2-1. Search Operation from Long Distance> FIG. 4 is a sequence chart showing the search operation of the search system SYS. First, in order to use the search system SYS, the user of the search system SYS dials up from the personal computer PC to the access server AS and performs a predetermined authentication procedure. Here, it is assumed that the authentication procedure at the access server AS has succeeded.

When the authentication procedure is successful, the search server SR
V displays the search request acceptance screen on the browser of the personal computer PC. Here, the user B operates the personal computer PC and inputs the telephone number NM of the mobile terminal HPj to be held by the searchee A in a predetermined form displayed on the browser. And user B
Instructs the personal computer PC to send the data entered in the form displayed on the browser to the search server SRV. Then, the personal computer PC sends the data input by the user B in the form displayed on the browser to the search server SRV (step S101).

When the search server SRV receives from the personal computer PC the data indicating the telephone number NM of the mobile terminal HPj to be held by the searchee, the search server SRV sends a response signal ACK to the personal computer PC (step S102). ). And the search server SRV
In order to confirm the coverage area of the mobile terminal HPj, the mobile terminal H
Data indicating the telephone number NM of Pj is stored in the home memory HM.
To the agent AGT (step S10)
3). At this time, the search server SRV creates a new record in the search execution table TBr in the database server DB and stores the received telephone number NM in the searched number field NO3.

When the data indicating the telephone number NM is received from the search server SRV, the agent AGT acquires the base station identification code CSID of the base station in which the mobile terminal HPj is located from the visited table TBa of the home memory HM,
It transmits to the search server SRV (step S104).

When the mobile terminal HPj receives the base station identification code CSID of the area in which it is currently located, the search server SR
V is a searcher table TBs of the database server DB
Then, a record including the acquired base station identification code CSID is extracted (step S105), and the data stored in the telephone number field NO2 of the record is used as the searcher number field in the new record in the search execution table TBr described above. Store in NO4. Further, the search server SRV generates an identification code ID which is a random character string composed of, for example, alphanumeric characters and stores the identification code ID in the identification code field IDf in the new record (step S106).

After that, the search server SRV determines in step S
The telephone number field NO2 included in the record extracted in 105 is referred to, and the search executor C corresponding to each record is requested to search for the search target person A. here,
The searcher C who holds the mobile terminal HPk is asked to search target person A.
Suppose that the search for is ordered. Then, the search server SRV
Toward the mobile terminal HPk that the search executor C should hold,
A command signal ODR for issuing a search command is transmitted (step S
107).

The mobile terminal HPk which has received the command signal ODR from the search server SRV notifies the search executor C of the reception of the command signal ODR by means of light, sound, or vibration in accordance with a predetermined program stored in the ROM 13. . Here, the search executor C operates the mobile terminal HPk to select whether or not to execute the search. When the search executor C permits the search execution (step S10)
8, Yes), the execution signal CRO is transmitted from the mobile terminal HPk to the search server SRV based on a predetermined operation of the search executor C (step S109).

When the execution signal CRO is received from the mobile terminal HPk, the search server SRV makes the database server DB
With reference to the personal information table TBp, various data and authentication data to assist the search are transmitted to the mobile terminal HPk (step S111). Here, the personal information data to be transmitted is designated by various data stored in the name field NAME, the gender field SEX, the age field AGE, the height field HIGHT, and the personality field TYPE, the image pass field PHOTO and the voice pass field VOICE. The two types of files to be created and the identification code ID.

The above data are sequentially received by the mobile terminal HPk. Then, the mobile terminal HPk stores the received data in the storage unit 14. Here, the data stored in the storage unit 14 is used when the search performer C operates to display various attribute information of the search target person A, an image showing a close shadow of the search target person A, and the like on the display section 15. It The mobile terminal HPk is
When the data reception is completed, the response signal ACK is transmitted to the search server SRV (step S112).

When data is transmitted to the mobile terminal HPk, the search server SRV causes the steps S103 and S10 to be performed.
In the same manner as 4 above, from the home memory HM to the mobile terminal HP
base station identification code CSID indicating the current location area of j
Is acquired (steps S113 to S114). And
The search server SRV uses the acquired base station identification code CS
Based on the ID, the position information of the mobile terminal HPj is transmitted to the mobile terminal HPk (step S115). The mobile terminal HPk transmits a sequential response signal ACK to the search server SRV in response to the reception of the position information from the search server SRV (step S116). This step S113-S1
The operations up to 16 are the mobile terminal HPj and the mobile terminal HP.
This is repeated until the existing areas of k overlap.

<1-2-2. Search operation from a short distance> When the mobile terminal HPj and the mobile terminal HPk come to be in the same base station area, the mobile terminal HPj further approaches the mobile terminal HPk based on the information in the home memory HM. Can't keep going. Therefore,
The mobile terminal HPk suspends communication with the base station BS,
A short-range wireless communication mode (hereinafter referred to as a transceiver mode) is entered.

First, the mobile terminal HPk switches the processing of the transmitting / receiving unit 10 to the short-distance wireless communication processing. Then, the mobile terminal HPk transmits a polling signal having a predetermined electric field strength. This polling signal includes the telephone number NM of the mobile terminal HPj and control information for requesting the mobile terminal HPj to switch to the transceiver mode. Upon receiving this polling signal, the mobile terminal HPj suspends communication with the base station BS and shifts to the transceiver mode.

The mobile terminal HPj is the mobile terminal HPj.
A signal for notifying the communication mode shift is transmitted to k via short-range wireless communication. The fact that the mobile terminal HPk receives the signal notifying the communication mode transition from the mobile terminal HPj means that at least the mobile terminal HPj is within the reach range of the polling signal. Therefore, the search executor C can easily identify that the mobile terminal HPj exists at a short distance.

In the above operation, the portable terminal HP
When the mobile terminal HPj does not respond to the polling signal for a predetermined period, the k ends the communication in the transceiver mode and restarts the communication with the base station BS.

In the above operation, the search executor C
Is a display unit 1 of the mobile terminal HPk based on a predetermined operation.
5, it is possible to display the current position information of the search target person A, display personal information indicating the characteristics of the search target person A, and display the near shadow of the search target person A based on the image file FLp. it can. Then, when the search executor C discovers a person who is considered to be the searchee A, the search executor C determines whether the person is the searchee A based on the authentication processing by the search server SRV. Check. This authentication processing will be described next.

<1-2-3. Searchee authentication operation> Fig. 5
FIG. 4 is a sequence chart showing a searchee authentication operation of the search system SYS. The search executor C uses the mobile terminal HP
When a person who is considered to be the searchee A who holds j is found,
This search target person A confirms whether or not to hold the mobile terminal HPj. Here, the search executor C reproduces the voice of the close relative of the search target A from the portable terminal HPk based on the audio file FLv, so that the person who is considered to be the search target A It can be inferred whether or not it is A. As a result, if it is possible to determine that the person considered to be the searchee A is probably the person in question, the search executor C holds the mobile terminal HPk held by itself and the mobile terminal held by the person considered to be the searchee A. Authentication processing between HPj and search server SRV is performed.

Then, the search executor C determines that the portable terminal HPk
From the telephone number NM of the mobile terminal HPk and the identification code ID received at the time of the search request,
While transmitting to the mobile terminal HPj, the communication in the transceiver mode is terminated and the communication with the base station BS is restarted (step S201). On the other hand, the mobile terminal HPj that has received the data transmits the data to the search server SRV via the base station BS and the exchange SW in the located area, terminates the communication in the transceiver mode, and communicates with the base station BS. Communication is restarted (step S202).

When the search server SRV receives the data from the mobile terminal HPj, the search server SRV extracts a record including the telephone number NM of the mobile terminal HPj from the search execution table TBr including the searchee number field NO3. Then, it is determined whether the data stored in the identification code field IDf of the extracted record matches the received identification code ID (step S203). Here, when the data match (Yes in step S203), the search server SRV generates a match signal IDT, and the mobile terminal HP.
k, mobile terminal HPj, and personal computer P
It transmits to C (step S204).

When the mobile terminal HPk receives the coincidence signal IDT (Yes in step S206), the ROM 1
According to a predetermined program stored in No. 3, a message indicating that the searchee A is authenticated is displayed on the display unit 15 (step S207). as a result,
The search executor C can be sure that the person who is considered to be the search target A is the search target A. After displaying the message, the mobile terminal HPk transmits a response signal ACK to the search server SRV (step S210).

On the other hand, if the authentication in step S203 is unsuccessful, the search server SRV determines that the mobile terminal HP requesting the authentication is not the mobile terminal HPj held by the search target person A, and the mismatch signal is output. The MIS is transmitted to the mobile terminal HPk (step S205). When the mobile terminal HPk receives the mismatch signal MIS (Yes in step S208), the mobile terminal HPk displays a message indicating that the authentication as the search target person A is not established according to the predetermined program stored in the ROM 13. Part 1
5 is displayed (step S209). In response to this, the search executor C understands that he has made a mistake and can continue the search. After displaying the message, the mobile terminal HPk transmits the response signal ACK to the search server SRV in the same manner as when the mobile terminal HPk receives the coincidence signal IDT.

For example, it is assumed that the person A to be searched is an elderly person with advanced dementia who has forgotten his relatives, even his own name. In this case, it may be difficult to know whether or not the person who is considered to be the searchee A is really the searchee A by observing the reaction such as reproduction of voice data indicating the voice of the close relative of the searchee A. . Even in such a case, the search system S of the present embodiment
By the YS authentication operation, the search executor C causes the search target person A to search.
It is possible to easily obtain the confirmation that the person who seems to be the person is really the person or not the person A to be searched.

Further, for example, it is assumed that the person A to be searched is a child with severe Down syndrome and has a marked lack of verbal ability. In this case, it is difficult to obtain proof that the person is who he / she is from the response to the inquiry. In addition, the appearance of Down's syndrome children is
It often looks uniform to people other than the person concerned, and even if the near shadow is obtained from the image data, the search executor C
May have difficulty obtaining confirmation that you are who you are. Even in such a case, the search system SY of the present embodiment
In S, it is possible to protect the person with the certainty that the person is sure by the authentication operation.

On the other hand, the mobile terminal HPj operates in step S20.
4. Matching signal IDT sent by search server SRV in 4
When the message is received, a message indicating that a person searching for the person A to be searched for has visited is displayed on the display unit 15 according to a predetermined program stored in the ROM 13 (step S
211). As a result, even if the searchee A and the search executor C are not acquainted with each other, the anxiety that the searchee A has with the search executor C can be greatly reduced, and the searcher C's protection activities can be reduced. make it easier. After displaying the message, the mobile terminal HPj
Transmits the response signal ACK to the search server SRV (step S212).

As described above, when the authentication in step S203 is successful, the coincidence signal IDT is transmitted to both the mobile terminal HPj and the mobile terminal HPk, and the authentication success message is displayed. Therefore, it is also possible for searchee A and search executor C to mutually confirm the state of the mobile terminal held by the other party, and searchee A and search executor C can further identify the establishment of authentication. it can.

Then, the personal computer PC is
When the coincidence signal IDT is received from the search server SRV, a screen notifying the discovery of the person A to be searched is displayed (step S
213). Therefore, the user B can quickly know that the search target person A has been discovered. Then, when the personal computer PC transmits the response signal ACK to the search server SRV (step S214), the processing ends.

<1-3. Effect of First Embodiment> As described above, in the search system SYS of the present embodiment,
Immediately after the user B notices the disappearance of the person to be searched A and makes a search request via the personal computer PC, immediately after the person to be searched A, the person who executes the search C of the institution closest to the person to be searched A is searched.
Thus, the search execution is performed, so that the search target person A can be protected quickly.

Further, in the search system SYS of this embodiment, after the search executor C is notified of the search for the search target person A,
Even when the search target person A moves, the data indicating the current position of the search target person A is sequentially transmitted to the mobile terminal HP of the search performer C, so that the search target person A can be easily tracked. it can.

In the portable terminal HP of this embodiment, when the search executor C searches for the search target person A, auxiliary information indicating the search target person A, for example, image information indicating the search target person A is displayed. It is possible to perform the search efficiently.

Further, in the search system SYS of this embodiment, the latest characteristic image of the person A to be searched can be uploaded to the database server DB, and the latest characteristic image of the person A to be searched can be used for the search. Since the searcher A is searched, even if the search executor C does not know the searchee A, it is easy to identify and specify the searchee A.

Further, when a person who seems to be the person A to be searched for is found, the portable terminal HP reproduces and outputs sound data in which the voice of the close relative of the person A to be searched A is recorded, and the person concerned is reproduced. The voice of a close relative of the person A to be searched can be heard. At this time, the search executor C can observe the reaction of the person who seems to be the person A to be searched, and can infer whether the person is the person A to be searched.

In order to make sure whether or not the person to be searched A, in the search system SYS of the present invention, a portable terminal HP held by a person who is considered to be the person A to be searched,
Mobile terminal HP held by searcher C and search server S
By performing the authentication with the RV, the identity of the person A to be searched can be confirmed on the spot and the person can be surely protected.

Further, since the result of the above authentication is also transmitted to the portable terminal HPj held by the searchee A, the anxiety of the searchee A with respect to the protection act of an unfamiliar person is greatly reduced, It is possible to prevent the person A to be searched from resisting the protective action of the person C to be searched.

When the searchee authentication is established, the coincidence signal IDT is transmitted to the mobile terminals HP held by both the searchee A and the search executor C, and the mobile terminal HPj.
And the message is displayed on both display units of the mobile terminal HPk. Therefore, the two mobile terminals HPj and H
By confirming the display part of Pk by the search target person A and the search executor C, the establishment of the authentication can be confirmed more clearly.

In addition, the search system SY of this embodiment
In S, the searchee A is authenticated and the searchee A is authenticated.
When the person's identity is protected, the person protection signal is immediately sent to the personal computer PC, so
User B can immediately identify the above-mentioned discovery.

<2. Second Embodiment><2-1. Configuration of Second Embodiment> FIG. 6 is a diagram showing the overall configuration of a searcher confirmation system SYS 'of the second embodiment. In the search system SYS ′ of the second embodiment, the personal computer PC accesses the search server SRV via the Internet INET. The user authentication for using the search system SYS is the search server SRV.
Do. The search system SYS ′ of the second embodiment does not have the access server AS. Furthermore, in the second embodiment, the search server SRV is provided with an encryption program, and it is possible to encrypt arbitrary data in a predetermined format.

FIG. 7 is a conceptual diagram showing a table stored in the database server DB ′ of the second embodiment. As shown in FIG. 7, the database server D of the second embodiment
B ′ is the same as the database server DB of the first embodiment except that the key table TBk is stored and the configuration of the search execution table TBr is different.

The key table TBk contains, for example, RSA.
(Rivest-Shamir-Adleman) and other data indicating a private key and a public key in a public key system are stored. The key table TBk includes a plurality of records, each record having a telephone number field NO1 and a secret key field KE.
A Ysf, a public key field KEYpf and a plaintext field PLN are provided. Phone number field NO1
Is the same as the telephone number field NO1 in the personal information table TBp, and this telephone number field NO1
Key table TBk using the data stored in
Is associated with the personal information table TBp. Data indicating the secret key KEYs is stored in the secret key field KEYsf, and the secret key K is stored in the public key field KEYpf.
Data indicating the public key KEYp corresponding to EYs is stored.

The plaintext field PLN contains the search server S.
Data indicating an arbitrary character string generated by RV is stored. Then, the data stored in the plaintext field PLN is encrypted with the secret key KEYs and is transmitted to the mobile terminal HP in advance as the encryption code ENC. Therefore, each mobile terminal HP stores the encryption code ENC in the storage unit 14.

Further, a decryption program used when decrypting the encryption code ENC with a predetermined public key is also transmitted to each mobile terminal HP. Then, each mobile terminal HP stores the decryption program in the storage unit 14. Therefore, each mobile terminal HP has a public key KEYp corresponding to the encryption code ENC stored in the storage unit 14.
The encryption code ENC can be decrypted by obtaining

The configuration other than the above is the same as that of the search system SYS of the first embodiment. In order to avoid complication, the same components as those in the search system SYS are designated by the same reference numerals, and the description thereof will be omitted.

<2-2. Operation of Second Embodiment> Next, the operation of the search system SYS 'will be described. In the following description, it is assumed that the person to be searched is the person A to be searched and the person A to be searched holds the mobile terminal HPj, as in the first embodiment. A user B requests a search from the personal computer PC when the searchee A disappears. Then, it is assumed that the person who searches the person A to be searched for at the request of the user B is the search executor C, and the search executor C holds the mobile terminal HPk. User B
It is assumed that the user has obtained a user name and password for using the search system SYS ′ by performing a predetermined procedure in advance.

<2-2-1. Search Operation> FIG. 8 is a sequence chart showing the search operation of the search system SYS ′. First, in searching for the search target person A, the user B uses the nearest ISP (Internet Service Provider) to
Access the search server SRV. At this time, an authentication process for authenticating the user B is performed between the search server SRV and the personal computer PC. Here, the description will be continued below assuming that the authentication process has been established.

When the authentication is established, the search server SRV
In the browser launched on the personal computer PC,
The input form for inputting the telephone number NM of the mobile terminal HPj is displayed. Hereinafter, steps S301 to S30
The operations up to 8 are the same as steps S101 to S1 described above, except that the search server SRV does not generate the identification code ID.
Since the operation is the same as that up to 09, the description is omitted.

In step S308, the execution signal CRO
Upon receipt of, the search server SRV refers to the home memory HM based on the telephone number of the mobile terminal HPj and acquires the current position information of the mobile terminal HPj. Then, the search server SRV transmits the position information of the mobile terminal HPj to the mobile terminal HPk. Further, the search server SRV simultaneously with the position information, the image path field PHO in the record corresponding to the search target person A in the personal information table TBp.
Two types of files designated by TO and voice path field VOICE and public key KEYp are transmitted to mobile terminal HPk. (Steps S310 to S31
2).

Then, the search server SRV extracts a record corresponding to the person A to be searched from the key table TBk of the database server DB, acquires the public key KEYp contained in the record, and transmits it to the portable terminal HPk. Also,
The mobile terminal HP can receive personal information data corresponding to a plurality of individuals from the search server SRV, and each data is sorted and stored with the telephone number NO1 as a key.

By the way, in steps S310 to S312 described above, the search server SRV does not transmit the personal information data indicating the person A to be searched to the portable terminal HPk. In the present embodiment, the personal information data indicating the search target person A is transmitted to the mobile terminal HPk in response to the request from the search executor C. If the personal information data indicating the search target person A is required (Yes in step S313), the search executing person C
Operates the input unit 17 of the mobile terminal HPk to transmit a signal requesting personal information to the search server SRV (step S314). Only when receiving this signal, the search server SRV receives the data indicating the personal information of the searchee A, that is, the name field NAME and the sex field SE.
X, age field AGE, height field HIGH
Various data stored in T and the appearance field TYPE are transmitted to the mobile terminal HPk (step S31).
5). When the personal information data indicating the searchee A is received,
The mobile terminal HPk sends the response signal ACK to the search server SRV.
(Step S316).

Unless the search executor C performs the operation of requesting the personal information data indicating the person A to be searched (No in step S313), the mobile terminal HPk receives the position information of the mobile terminal HPj. , Response signal ACK is transmitted to search server SRV (step S316). Then, when the search target person A is not found (No in step S317), the search server SRV returns the process to step S311 and continues to supply the position information of the mobile terminal HPj to the mobile terminal HPk.

<2-2-2. Searchee authentication operation> Fig. 9
[Fig. 6] is a sequence chart showing a searchee authentication operation of the search system SYS '. First, the mobile terminal HPk transmits to the mobile terminal HPj a request signal REQ requesting transmission of the encryption code ENC (step S401). Upon receiving the request signal REQ, the mobile terminal HPj changes the encryption code ENC stored in the storage unit 14 to the mobile terminal HPk.
(Step S402).

When the mobile terminal HPk receives the encryption code ENC from the mobile terminal HPj, the mobile terminal HPk uses the public key KEYp stored in the storage unit 14 to decrypt the encryption code ENC to create a decryption code DEC (step S40
3). The mobile terminal HPk then uses the decryption code DEC.
To the search server SRV (step S40).
4).

When the search server SRV receives the decryption code DEC from the mobile terminal HPk, the search server SRV executes the search execution table TB.
With reference to r, the data stored in the plaintext field PLN of the record corresponding to the mobile terminal HPj is the decryption code D.
It is determined whether or not it matches EC (step S40).
5). Here, the data stored in the plaintext field PLN is the decryption code DEC transmitted by the mobile terminal HPk.
When it matches with (Yes in step S406),
The search server SRV sends the match signal IDT to the mobile terminal HPk.
And to the mobile terminal HPj (step S40).
7).

The processing of steps S408 to S417 is the same as the processing of steps S205 to S214, and therefore its explanation is omitted.

When the search process ends after receiving the response signal ACK from the terminal device HPk in step S417 (Yes in step S418), the search server SRV newly creates the secret key KEYs and the public key K.
A set of data of EYp is generated and stored in the secret key field KEYsf and the public key field KEYpf of the record corresponding to the mobile terminal HPj in the key table TBk. Further, the search server SRV updates the character string stored in the plaintext field PLN and encrypts the updated data with the new secret key KEYp to create a new encryption code ENCn (step S419).

Then, the search server SRV transmits the cipher code ENCn to the portable terminal HPj (step S4).
20). When receiving the encryption code ENCn, the mobile terminal H
Pj is the encryption code ENC stored in the storage unit 14,
The encryption code ENCn is replaced (step S421).
When the replacement is completed, the mobile terminal HPj sends the response signal ACK.
To the search server SRV (step S422), and the process ends.

<2-3. Effect of Second Embodiment> As described above, in the search system SYS ′ of the second embodiment, the public key KEYp used for authentication is updated at the end of the search. Furthermore, the mobile terminal HP held by the searchee A
The encryption code ENC stored by j is also updated. Therefore, since the encrypted code ENC that has been used for the search once and decrypted is not reused, the risk that the authentication information is misused can be reduced.

<3. Modification> The search systems SYS and SYS 'of the present invention are not limited to the above-described embodiments, and various modifications can be made within the scope of the technical idea thereof.

(1) In the first and second embodiments described above, the position information acquisition of the first mobile terminal to be held by the searchee A is based on signal transmission / reception between the mobile terminal HP and the base station BS. As described above, the position information acquisition means may be, for example, a GPS (Global Positioning System).
It may be possible to use a method such as s). In this case, the GPS receiver may be included in the mobile communication network NET or may be included in the mobile terminal HP. In short, any mode may be used as long as it is a mode in which the position information of the mobile terminal HP held by the search target person A can be acquired.

(2) In the above-described first and second embodiments, the user B requests the searchee A to search through the personal computer PC, but for example, a mobile phone with a browser function is provided. For example, a search request may be made using a mobile terminal that can browse a web page. In short,
Any mode may be used as long as the user B can request the search to the search server SRV immediately after the disappearance of the search target person A is discovered.

(3) In the above-described first and second embodiments, the image data uploaded by the user B to the database server DB as the image data transmitted to the mobile terminal HPk to identify the searchee A. Although the description has been given using the mode utilizing, the image data showing the search target person A may be automatically acquired. In short, any form may be used as long as the image or audio data can be transmitted to the mobile terminal of the search executor to assist the search.

(4) In the above-described first and second embodiments, the search executor B moves from the search server SRV to the mobile terminal H.
Although the description has been given by taking the mode in which the current position information of Pj is acquired and the mobile terminal HPj approaches the current position by itself based on the information, it is possible to make a call between the mobile terminals HPk and HPj. For example, the search executor B may take a mode in which the search target person A is guided to a desired position by voice to make protection easier, and the search target person B seems to be the search target person A appearing at the position of the guide destination. The authentication operation may be performed with a person. In short, the search executor B may use the mobile terminal HP in any way when the searcher A approaches the current position of the person.

(5) In the first and second embodiments described above, the personal information table, the key information table, and the requester table are all stored in the database server DB, but each table is described. May be configured as a distributed database. In short, any mode may be used as long as the search server SRV can acquire various data required for the search by the search target person A.

(6) In the above-described first embodiment, in order to authenticate whether the person who seems to be the searchee A is really the searchee A, the identification code ID is close to the mobile terminal HJj from the mobile terminal HPk. Although the description has been given in the mode in which the authentication process is performed by the transmission by the distance wireless communication, the search executor C manually inputs the identification code ID into the mobile terminal HP held by the person who is considered to be the search target A, and the search server SRV. Alternatively, the identification code ID may be transmitted to the user. In short, the identification code I transmitted only to the mobile terminal HPk at the start of the search
If D is transmitted from the mobile terminal HPj held by the search target person A to the search server SRV, and as a result, the search target person A is authenticated, any mode may be used.

(7) In addition, in the above-described first embodiment, in order to authenticate whether the person who is considered to be the searchee A is really the searchee A, the portable terminal HPk to the portable terminal HP is authenticated.
to the search server SRV by transmitting the identification code ID and the telephone number NM to the search server SRV by the short-distance wireless communication, and the identification code ID and the telephone number NM are transmitted to the search server SRV. I was broken. Here, for example, when a terminal ID or the like that can uniquely identify the mobile terminal HP is stored in the ROM 13 of the mobile terminal HP, the terminal ID is used instead of the telephone number NM. May be. Further, instead of the telephone number NM, an electronic mail address uniquely assigned to the mobile terminal HP may be used. In short, the search server SRV can uniquely identify the mobile terminal HP that is the transmission destination of the identification code ID and the mobile terminal HP that is the transmission source of the identification code ID, and perform the authentication operation of the search target person A. If there is, it does not matter.

(8) In the above-described second embodiment, the description has been given of the mode in which the encryption code ENC is decrypted in the mobile terminal HPk.
A mode may be adopted in which the mobile terminal HPj or the search server SRV is used. In this case, at the request of the mobile terminal HPk, the cryptographic code ENC is transmitted from the mobile terminal HPj to the mobile terminal HPk, and then the cryptographic code ENC is decrypted at the mobile terminal HPk. In short,
With the public key KEYp transmitted only to the search executor C, the encryption code ENC stored in the mobile terminal HPj
May be decrypted and the searchee A may be authenticated based on the result.

(9) In the above-described first and second embodiments, the searchee A is authenticated by displaying the authentication result on the display unit 15 of the portable terminal HPk by receiving the match signal IDT or the mismatch signal MIS. The description has been given in such a manner that the search result can be identified by the search executor C. However, instead of displaying the authentication result on the display unit 15 by the mobile terminal HPk, the authentication result may be notified by light, sound, or vibration. In short, the mobile terminal H triggered by the reception of the match signal IDT or the mismatch signal MIS
Any form may be used as long as the search executor C can identify the authentication result by the process of Pk.

(10) In the first and second embodiments described above, the person A to be searched has been described as a human, but the searchable object by holding the portable terminal HPj is not limited to a human. Absent. For example, it may be a non-human creature such as a natural animal, or an object such as a car or a ship.
In short, the position information of the mobile terminal HP is used to search for an object that is a mobile body, and the authentication of the found object is authenticated by the mobile terminal HP.
Any form may be used as long as it can be performed by utilizing.

(11) In the above-mentioned first and second embodiments, the personal information data of the person A to be searched is transmitted to the portable terminal HPk held by the search executor C. However, in addition to this, the personal information data indicating the search executor C may be transmitted to the mobile terminal HPj to be held by the search target person A. In this case, the personal information data indicating the search executor C is stored in advance in the personal information table TBp, and when the personal information data of the search target person A is transmitted to the mobile terminal HPk, the mobile terminal H is transmitted.
The personal information data of the search executor C may be transmitted to Pj. By doing so, the mobile terminal HPj can perform an operation such as displaying a facial photograph of the search executor C, which helps to protect the search target person A more smoothly.

(12) In the first and second embodiments described above, at the start of the search for the person A to be searched, the telephone number NM uniquely associated with the portable terminal HPj to be held by the person A to be searched is set to Although the description has been given by taking the aspect of transmitting to the search server SRV, at this time, the search server SRV side authenticates whether or not the mobile terminal HPj can be searched, and if the authentication is not successful, the personal information data is transmitted to the mobile terminal HPk. Alternatively, an unauthorized search may be suppressed. For example, a field for storing a flag indicating whether or not the mobile terminal HPj can be searched is provided in advance in the personal information table TBp. Then, when the telephone number NM is transmitted from the requesting terminal PC to the search server SRV (step S10 above).
In 1), a field for storing a flag is set to the search server SR.
V refers to and performs authentication processing. And the search server SR
When the response signal ACK is transmitted from V to the requesting terminal PC (step S102 above), the authentication result of the mobile terminal HPj is notified together with the response signal ACK. here,
If the authentication is not established, the subsequent processing (step S103)
~ S116) is not performed. By doing so, the personal information regarding the search target person A who is not permitted to search is not transmitted to the outside of the search server SRV, and the aspect of the present modification 12 can be realized.

[0136]

As described above, in the search system, the search server, the mobile terminal and the search target authentication method of the present invention, the search target person is searched using the latest characteristic image data of the search target person. When discovering a person who seems to be the searchee, the voice data recorded from the close relatives of the searchee is used to determine whether the person who is thought to be the searchee is the searchee or not. Assists with the sensuous identification.

In the search system, the search server, the mobile terminal and the search target authentication method of the present invention, the data held in the mobile terminal held by the person suspected to be searched and the mobile terminal held by the search executor are stored. Since the authentication is performed by using it, the search target person can be surely specified.

Further, in the search system, search server, portable terminal and search target authentication method of the present invention, when a cipher is used to authenticate the searchee, the ciphertext and key to be used are updated every time the search is completed. The risk of misuse of authentication information can be reduced.

[Brief description of drawings]

FIG. 1 is a diagram showing an overall configuration of a searcher confirmation system SYS.

FIG. 2 is a block diagram showing an electrical configuration of the mobile terminal HP.

FIG. 3 is a conceptual diagram showing a table stored in a database server DB.

FIG. 4 is a sequence chart showing a search operation of the search system SYS.

FIG. 5 is a sequence chart showing a searchee authentication operation of the search system SYS.

FIG. 6 is a diagram showing an overall configuration of a search system SYS ′.

FIG. 7 is a conceptual diagram showing a table stored in a database server DB ′.

FIG. 8 is a sequence chart showing a search operation of the search system SYS ′.

FIG. 9 is a sequence chart showing a searchee authentication operation of the search system SYS ′.

[Explanation of symbols]

A ... Search target, B ... User, C ... Search executor, SRV ...
Search server, ID ... identification code, ENC ... encryption code,
HP ... mobile terminal, KEYs ... secret key, KEYp ... public key, PC ... personal computer, REQ ... request signal, IDT ... match signal, NO1, NO2 ... phone number, 1
0 ... Transmitting / receiving unit, 11 ... CPU, 13 ... ROM, 14 ... Storage unit, 15 ... Display unit, 17 ... Input unit.

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) H04M 11/00 302 H04B 7/26 106B // G01S 5/14 H04L 9/00 673B 675B (72) Inventor Murata Satoru 2-11-1, Nagata-cho, Chiyoda-ku, Tokyo F-term in NTT Docomo Inc. (reference) 5B075 ND02 NK24 UU08 5J062 AA08 BB05 CC11 5J104 AA07 KA01 KA02 KA05 MA01 NA02 PA07 5K067 AA21 02 EE10 EE16 FF23 HH22 HH23 HH32 HH36 JJ53 JJ54 KK13 KK15 5K101 KK19 LL01 LL12 MM07 PP03

Claims (38)

[Claims] 1. A plurality of first mobile terminals held by a plurality of searchers, a plurality of second mobile terminals held by a plurality of search targets scheduled to be searched, and the first and second mobile phones. In a search system including a search server communicable with a terminal, the search server generates a request identification code that uniquely identifies the search request when a search for a certain second mobile terminal is requested. A storage unit that stores the request identification code and a terminal identification code for uniquely identifying the plurality of second mobile terminals in association with each other, and transmits the request identification code to the first mobile terminal. A transmitting unit, a receiving unit that receives the request identification code and the terminal identification code from the second mobile terminal, and a case where the request identification code and the terminal identification code are received from the second mobile terminal, Concerned A comparison unit that compares the received request identification code and terminal identification code with the request identification code and the terminal identification code stored in the storage unit, and the second mobile terminal based on the comparison result of the comparison unit. An authentication unit that authenticates that the search target that holds is valid, the first mobile terminal receives the request identification code from the search server, and stores the request identification code. And a transmitter that transmits the request identification code by short-distance wireless communication based on a predetermined operation of the searcher, and the second mobile terminal receives the request identification code by short-distance wireless communication. A search system, comprising: a reception unit; and a transmission unit that transmits the request identification code and the terminal identification code to the search server. 2. A plurality of first mobile terminals held by a plurality of searchers, a plurality of second mobile terminals held by a plurality of search targets scheduled to be searched, and the first and second mobile phones. In a search system including a search server communicable with a terminal, the search server generates a request identification code that uniquely identifies the search request when a search for a certain second mobile terminal is requested. A storage unit that stores the request identification code and a terminal identification code for uniquely identifying the plurality of second mobile terminals in association with each other, and transmits the request identification code to the first mobile terminal. A transmitting unit, a receiving unit that receives the request identification code and the terminal identification code from the second mobile terminal, and a case where the request identification code and the terminal identification code are received from the second mobile terminal, Concerned A comparison unit that compares the received request identification code and terminal identification code with the request identification code and the terminal identification code stored in the storage unit, and the second mobile terminal based on the comparison result of the comparison unit. An authentication unit that authenticates that the search target that holds is valid, the first mobile terminal receives the request identification code from the search server, and stores the request identification code. And a display unit that displays the request identification code read from the storage unit based on a predetermined operation of the searcher, the second mobile terminal corresponding to the second mobile terminal. A storage unit that stores a terminal identification code, an input unit that receives a user's input instruction, the searcher operates the input unit to input the request identification code, and the input Wherein when a request identification code inputting an instruction to be transmitted to the search server has,
A search system comprising: a transmission unit that transmits the request identification code and the terminal identification code to the search server. 3. A plurality of first mobile terminals held by a plurality of searchers, a plurality of second mobile terminals held by a plurality of search targets scheduled to be searched, and the first and second mobile phones. In a search system including a search server communicable with a terminal, the search server includes a terminal identification code for identifying each of the second mobile terminals, and an authentication for authenticating each of the second mobile terminals. A storage unit that stores a code and a set of a private key and a public key corresponding to each authentication code in association with each other, and creates an encrypted authentication code by encrypting the authentication code with the private key corresponding to the authentication code. And an encryption unit for transmitting the encrypted authentication code to each of the plurality of second mobile terminals in advance, and when the search for the certain second mobile terminal is requested, Approval A transmitter for transmitting the public key corresponding to the code to the first mobile terminal; a receiver for receiving the authentication code and the terminal identification code from the second mobile terminal; When the authentication code and the terminal identification code are received, a comparison unit that compares the received authentication code and the terminal identification code with the stored content of the storage unit, and the comparison unit based on the comparison result of the comparison unit. An authentication unit that authenticates that the search target holding the second mobile terminal is valid; the first mobile terminal stores a reception unit that receives the public key from the search server; and stores the public key. And a transmitter that transmits the public key to the second mobile terminal by short-range wireless communication based on a predetermined operation of the searcher, the second mobile terminal, A receiving unit that receives the encrypted authentication code from the search server and also receives the public key from the first mobile terminal via short-range wireless communication; a storage unit that stores the encrypted authentication code; and the public key. The decryption unit that decrypts the encrypted authentication code stored in the storage unit using the terminal, the terminal identification code, and the authentication code obtained by decrypting the encrypted authentication code. A search system comprising: a transmission unit for transmitting to a server. 4. A plurality of first mobile terminals held by a plurality of searchers, a plurality of second mobile terminals held by a plurality of search targets scheduled to be searched, and the first and second mobile phones. In a search system including a search server capable of communicating with a terminal, the search server includes a terminal identification code for identifying each of the first mobile terminals and an authentication for authenticating each of the second mobile terminals. A storage unit that stores a code and a set of a private key and a public key corresponding to each authentication code in association with each other, and creates an encrypted authentication code by encrypting the authentication code with the private key corresponding to the authentication code. And an encryption unit for transmitting the encrypted authentication code to each of the plurality of second mobile terminals in advance, and when the search for the certain second mobile terminal is requested, Approval A transmitter for transmitting the public key corresponding to the code to the first mobile terminal, and decrypts the terminal identification code and the encrypted authentication code of the first mobile terminal from the first mobile terminal. A receiving unit that receives the obtained authentication code, a comparing unit that compares the terminal identification code and the authentication code received from the first mobile terminal with the storage content of the storage unit, and a comparison result of the comparing unit And an authentication unit that authenticates that the search target holding the second mobile terminal is valid based on the above, the first mobile terminal receives the public key from the search server, and A receiving unit that receives an encrypted authentication code from the second mobile terminal; a storage unit that stores the public key; a decrypting unit that decrypts the encrypted authentication code using the public key; Prescribed operation By transmitting a request signal requesting transmission of the encrypted authentication code to the second mobile terminal by short-range wireless communication, and by decrypting the terminal identification code and the encrypted authentication code. A transmitting unit that transmits the obtained authentication code to the search server, the second mobile terminal receives the encrypted authentication code from the search server, and sends the request signal to the first mobile phone. A receiving unit that receives the short-distance wireless communication from the terminal, a storage unit that stores the encrypted authentication code, and a short-distance wireless communication of the encrypted authentication code to the first mobile terminal based on the request signal. A search system comprising: a transmission unit for transmitting. 5. The terminal identification code is a telephone number of the second mobile terminal, a terminal ID number uniquely assigned to the second mobile terminal, or a unique ID assigned to the second mobile terminal. The search system according to claim 1, wherein the search system is at least one of electronic mail addresses. 6. The terminal identification code is a telephone number of the first mobile terminal, a terminal ID number uniquely assigned to the first mobile terminal, or a unique ID assigned to the first mobile terminal. The search system according to claim 4, wherein the search system is at least one of electronic mail addresses. 7. The search server sends, to the first mobile terminal, a notification signal for notifying the discovery of the search target when it is authenticated that the search target holding the second mobile terminal is valid. The search system according to any one of claims 1 to 4, further comprising a notification signal transmission unit that transmits the notification signal. 8. The search server sends a notification signal for notifying the discovery of the search target when the search target holding the second mobile terminal is authenticated as valid, or the first mobile terminal or The search system according to any one of claims 1 to 4, further comprising a notification signal transmission unit that transmits the notification signal to the second mobile terminal. 9. The search server further comprises a request terminal for transmitting a request signal requesting a search for the second mobile terminal, and when the request signal is received from the request terminal, the first server
The search system according to any one of claims 1 to 4, wherein the mobile terminal is instructed to search for the second mobile terminal requested to search. 10. The notification that the search server sends a notification signal for notifying the discovery of the search target to the request terminal when it is authenticated that the search target holding the second mobile terminal is authorized. The search system according to claim 9, further comprising a signal transmission unit. 11. A search system, comprising: a plurality of first mobile terminals held by a plurality of searchers; and a plurality of second mobile terminals held by a plurality of search targets scheduled to be searched, In a search server capable of communicating with the first and second mobile terminals, when a search for a certain second mobile terminal is requested, a generation unit that generates a request identification code that uniquely identifies the search request, A storage unit that stores the request identification code and a terminal identification code for uniquely identifying the plurality of second mobile terminals in association with each other, and a transmission unit that transmits the request identification code to the first mobile terminal. A receiving unit that receives the request identification code and the terminal identification code from the second mobile terminal; and, if the request identification code and the terminal identification code are received from the second mobile terminal, the reception section receives the request identification code and the terminal identification code. A comparison unit that compares a request identification code and a terminal identification code stored in the storage unit with a reliance identification code and a terminal identification code, and holds the second mobile terminal based on a comparison result of the comparison unit. A search server, comprising: an authentication unit that authenticates that the search target is valid. 12. A search system, comprising: a plurality of first mobile terminals held by a plurality of searchers; and a plurality of second mobile terminals held by a plurality of search targets scheduled to be searched, In a search server capable of communicating with the first and second mobile terminals, a terminal identification code for identifying each of the second mobile terminals, and an authentication code for authenticating each of the second mobile terminals, A storage unit that stores a pair of a private key and a public key corresponding to each authentication code in association with each other, and an encryption that encrypts the authentication code with the private key corresponding to the authentication code to create an encrypted authentication code. And a plurality of second mobile terminals, the encrypted authentication code is transmitted in advance, and when a search for a certain second mobile terminal is requested, the authentication code of the second mobile terminal is sent. A transmitting unit for transmitting the public key corresponding to the terminal to the first mobile terminal, a receiving unit for receiving the authentication code and the terminal identification code from the second mobile terminal, and a second mobile terminal When the authentication code and the terminal identification code are received, a comparison unit that compares the received authentication code and the terminal identification code with the stored content of the storage unit, and the comparison unit based on the comparison result of the comparison unit. 2. A search server, comprising: an authentication unit that authenticates that a search target holding the second mobile terminal is valid. 13. A search system, comprising: a plurality of first mobile terminals held by a plurality of searchers; and a plurality of second mobile terminals held by a plurality of search targets scheduled to be searched, In a search server capable of communicating with the first and second mobile terminals, a terminal identification code for identifying each of the first mobile terminals, and an authentication code for authenticating each of the second mobile terminals, A storage unit that stores a pair of a private key and a public key corresponding to each authentication code in association with each other, and an encryption that creates an encrypted authentication code by encrypting the authentication code with the private key corresponding to the authentication code. And a plurality of second mobile terminals, the encrypted authentication code is transmitted in advance, and when a search for a certain second mobile terminal is requested, the authentication code of the second mobile terminal is sent. A transmission unit for transmitting the public key corresponding to the first mobile terminal to the first mobile terminal, and decrypting the terminal identification code and the encrypted authentication code of the first mobile terminal from the first mobile terminal. A receiving unit that receives the obtained authentication code, a comparing unit that compares the terminal identification code and the authentication code received from the first mobile terminal with the storage content of the storage unit, and a comparison result of the comparing unit A search server, which authenticates that the search target holding the second mobile terminal is valid based on the above. 14. When the authentication that the search target holding the second mobile terminal is valid is established, the authentication code and the authentication code corresponding to the authenticated second mobile terminal are added. A corresponding private key and public key pair is regenerated, the regenerated authentication code and the secret key and public key pair are stored, and the authentication code is encrypted by the corresponding private key. And transmitting the encrypted authentication code to the second mobile terminal for which the authentication is established,
The second mobile terminal stores the encrypted authentication code newly received from the search server by replacing it with the encrypted authentication code used for the authentication. 13. The search server according to any one of 13. 15. The terminal identification code is a telephone number of the second mobile terminal, a terminal ID number uniquely assigned to the second mobile terminal, or a unique ID assigned to the second mobile terminal. The search server according to claim 11 or 12, wherein the search server is at least one of electronic mail addresses. 16. The terminal identification code is a telephone number of the first mobile terminal, a terminal ID number uniquely assigned to the first mobile terminal, or a unique ID assigned to the first mobile terminal. 14. The search server according to claim 13, wherein the search server is at least one of electronic mail addresses. 17. A notification signal for transmitting to the first mobile terminal a notification signal for notifying the discovery of the search target when it is authenticated that the search target holding the second mobile terminal is valid. 14. The search server according to claim 11, further comprising a transmission unit. 18. A notification signal for notifying the discovery of the search target is authenticated when it is authenticated that the search target holding the second mobile terminal is valid. The search server according to any one of claims 11 to 13, further comprising a notification signal transmission unit that transmits the notification signal to the mobile terminal. 19. A search request is made to the first mobile terminal when the request signal is received from the request terminal, which is connected to a request terminal that transmits a request signal requesting a search for the second mobile terminal. The search server according to any one of claims 11 to 13, wherein the search server commands a search for the second mobile terminal. 20. A notification signal transmission unit that transmits a notification signal for notifying the discovery of the search target to the requesting terminal when it is authenticated that the search target holding the second mobile terminal is valid. The method according to claim 1, further comprising:
The search server according to item 9. 21. A mobile terminal that searches for a search target terminal that is a search target based on a command from a search server, wherein the search target terminal is searched for when the search target terminal is requested by the search server. A receiving unit that receives a request identification code that uniquely identifies a search request from the search server, a storage unit that stores the received request identification code, and a short-range wireless communication of the stored request identification code in the searched terminal. A mobile terminal, comprising: 22. In a mobile terminal searched based on a command from a search server, a request identification code that uniquely identifies a search request for the mobile terminal itself is transmitted from a search terminal searching for the mobile terminal itself by short-range wireless communication. A mobile terminal comprising: a receiving unit that receives the mobile terminal, and a transmission unit that transmits the terminal identification code that can uniquely identify the mobile terminal itself and the received request identification code to the search server. 23. In a mobile terminal that searches for a search target terminal as a search target based on a command from the search server, a public key associated with an authentication code for authenticating the search target terminal is provided to the search server. A receiving unit for receiving the received public key, a storage unit for storing the received public key, and a transmitting unit for transmitting the stored public key to the searched terminal by short-range wireless communication based on a predetermined operation of the searcher. A mobile terminal comprising: 24. In a mobile terminal searched based on a command from a search server, an encryption code obtained by encrypting an authentication code for authenticating each of the searched terminals with the secret key corresponding to the authentication code. A first receiving unit that receives an encrypted authentication code from the search server; a storage unit that stores the encrypted authentication code; and a public key that is associated with an authentication code for authenticating the searched terminal. A second receiving unit that receives the short-distance wireless communication from the search terminal, a decrypting unit that decrypts the encrypted authentication code stored in the storage unit by using the public key, and the mobile terminal itself uniquely. A portable terminal, comprising: a identifiable terminal identification code, and a transmission unit that transmits the authentication code obtained by decrypting the encrypted authentication code to the search server. Terminal. 25. In a mobile terminal that searches for a search target terminal that is a search target based on a command from the search server, a public key associated with an authentication code for authenticating the search target terminal is the search server. A first receiving unit that receives more information, a storage unit that stores the public key, and an encryption code obtained by encrypting an authentication code for authenticating each of the searched terminals with the secret key corresponding to the authentication code. Secondly, receiving the authentication code from the searched terminal
And a decryption unit for decrypting the encrypted authentication code by using the public key, and a request signal requesting transmission of the encrypted authentication code to the searched terminal by short-range wireless communication. A mobile terminal, comprising: a transmitter that transmits the terminal identification code and the authentication code obtained by decrypting the encrypted authentication code to the search server. 26. In a mobile terminal searched based on a command from a search server, an encryption obtained by encrypting an authentication code for authenticating each of the searched terminals with the secret key corresponding to the authentication code. First to receive the authentication code from the search server
A receiving unit for storing the encrypted authentication code, a second receiving unit for receiving a request signal requesting transmission of the encrypted authentication code from the search terminal by short-range wireless communication, and the request A mobile terminal, comprising: a transmitter that transmits the encrypted authentication code to the search terminal by short-range wireless communication based on a signal. 27. The terminal identification code is at least one of a telephone number of the mobile terminal, a terminal ID number uniquely assigned to the mobile terminal, or an electronic mail address uniquely assigned to the mobile terminal. 22. The claim 22, claim 24 or claim 25, wherein
The mobile terminal according to any one of 1. 28. A plurality of first mobile terminals held by a plurality of searchers, a plurality of second mobile terminals held by a plurality of search targets scheduled to be searched, and the first and second mobile phones. In a search target authentication method used in a search system including a search server capable of communicating with a terminal, the search server stores in advance a terminal identification code for uniquely identifying the plurality of second mobile terminals, When a search for a certain second mobile terminal is requested, the search server generates a request identification code that uniquely identifies the search request, and the search server corresponds to the request identification code and the search request. The terminal identification code is stored in association with the search server, the search server transmits the request identification code to the first mobile terminal, and the first mobile terminal receives the request identification code from the search server. Upon receipt of the request, the request identification code is stored, the first mobile terminal transmits the request identification code to the second mobile terminal by short-range wireless communication based on a predetermined operation of the searcher, and the second mobile terminal When receiving the request identification code by short-distance wireless communication, the mobile terminal transmits the request identification code and the terminal identification code of the second mobile terminal to the search server, and the search server uses the request identification code and When the terminal identification code is received, the received request identification code and the terminal identification code are compared with the stored contents, and the search server holds the second mobile terminal based on the result of the comparison. A search target authentication method characterized by authenticating that a target is valid. 29. A plurality of first mobile terminals held by a plurality of searchers, a plurality of second mobile terminals held by a plurality of search targets scheduled to be searched, and the first and second mobile phones. In a search target authentication method used in a search system including a search server capable of communicating with a terminal, the search server stores in advance a terminal identification code for uniquely identifying the plurality of second mobile terminals, When a search for a certain second mobile terminal is requested, the search server generates a request identification code that uniquely identifies the search request, and the search server corresponds to the request identification code and the search request. The terminal identification code is stored in association with the search server, the search server transmits the request identification code to the first mobile terminal, and the first mobile terminal receives the request identification code from the search server. Upon receipt of the request, the request identification code is stored, the first mobile terminal displays the request identification code based on a predetermined operation of the searcher, and when the searcher discovers the search target, the first mobile terminal displays the request identification code. The mobile terminal 2 transmits the request identification code and the terminal identification code to the search server based on a predetermined operation of the searcher, and when the search server receives the request identification code and the terminal identification code, The received request identification code and the terminal identification code are compared with the stored contents, and the search server authenticates that the search target holding the second mobile terminal is valid based on the result of the comparison. A search target authentication method characterized by the above. 30. A plurality of first mobile terminals held by a plurality of searchers, a plurality of second mobile terminals held by a plurality of search targets scheduled to be searched, and the first and second mobile phones. In a search target authentication method used in a search system including a search server capable of communicating with a terminal, the search server includes a terminal identification code for identifying each of the second mobile terminals, and the second mobile terminal. And stores the authentication code for authenticating each of them and the set of the private key and the public key corresponding to each authentication code in association with each other, and the search server stores the authentication code for each of the plurality of second mobile terminals. An encrypted authentication code obtained by encrypting with the corresponding secret key is transmitted in advance, the second mobile terminal stores the encrypted authentication code received from the search server, and the second mobile terminal When an end search is requested, the search server refers to the stored contents and transmits the public key corresponding to the authentication code of the second mobile terminal that has made the search request to the first mobile terminal. Then, when the first mobile terminal receives the public key from the search server, the first mobile terminal stores the public key, and the first mobile terminal stores the public key based on a predetermined operation of the searcher. When the second mobile terminal receives the public key by short-range wireless communication, the second mobile terminal transmits the short-range wireless communication to the second mobile terminal, and the second mobile terminal stores the public key in advance by using the received public key. The encrypted authentication code is decrypted, the second mobile terminal transmits the decrypted authentication code and the terminal identification code of the second mobile terminal to the search server, and the search server decrypts Said authentication Code and the terminal identification code are received, the received authentication code and terminal identification code are compared with stored contents, and the search server holds the second mobile terminal based on the result of the comparison. A method of authenticating a search target, characterized by authenticating that the search target is valid. 31. A plurality of first mobile terminals held by a plurality of searchers, a plurality of second mobile terminals held by a plurality of search targets scheduled to be searched, and the first and second mobile phones. In a search target authentication method used in a search system including a search server communicable with a terminal, the search server includes a terminal identification code for identifying each of the first mobile terminals, and the second mobile terminal. And stores the authentication code for authenticating each of them and the set of the private key and the public key corresponding to each authentication code in association with each other, and the search server stores the authentication code for each of the plurality of second mobile terminals. An encrypted authentication code obtained by encrypting with the corresponding secret key is transmitted in advance, the second mobile terminal stores the encrypted authentication code received from the search server, and the second mobile terminal When an end search is requested, the search server refers to the stored contents and transmits the public key corresponding to the authentication code of the second mobile terminal that has made the search request to the first mobile terminal. Then, the first mobile terminal stores the public key, and the first mobile terminal transmits a request signal requesting transmission of the encrypted authentication code based on a predetermined operation of the searcher. When the second mobile terminal receives the request signal, the encrypted authentication code stored in advance is transmitted to the first mobile terminal via short-range wireless communication. When the first mobile terminal receives the encrypted authentication code, the first mobile terminal decrypts the encrypted authentication code using the public key, and the first mobile terminal transmits the decrypted authentication. Code and the first mobile The terminal identification code at the end is transmitted to the search server, the search server, when receiving the decrypted authentication code and the terminal identification code, the received authentication code and the terminal identification code as stored contents In comparison, the search server authenticates that the search target holding the second mobile terminal is valid based on the result of the comparison. 32. When authentication that the search target holding the second mobile terminal is valid is established, the search server is configured to perform the authentication code corresponding to the authenticated second mobile terminal. And a pair of private key and public key corresponding to the authentication code is regenerated, the search server stores the regenerated authentication code and the pair of private key and public key, the search server, The encrypted authentication code obtained by encrypting the authentication code with the corresponding private key is transmitted to the second mobile terminal that has been authenticated, and the second mobile terminal newly receives from the search server. 32. The search target authentication method according to claim 30 or 31, wherein the encrypted authentication code is stored by replacing it with the encrypted authentication code used for the authentication. 33. The terminal identification code is a telephone number of the second mobile terminal, a terminal ID number uniquely assigned to the second mobile terminal, or uniquely assigned to the second mobile terminal. 31. The search target authentication method according to claim 28, wherein the search target authentication method is at least one of electronic mail addresses. 34. The terminal identification code is a telephone number of the first mobile terminal, a terminal ID number uniquely assigned to the first mobile terminal, or a unique ID assigned to the first mobile terminal. 32. The search target authentication method according to claim 31, wherein at least one of the electronic mail addresses is used. 35. The search server sends a notification signal notifying the discovery of the search target to the first mobile phone when the authentication that the search target holding the second mobile terminal is valid is established. 32. The search target authentication method according to claim 28, which is transmitted to a terminal. 36. The search server, when the authentication that the search target holding the second mobile terminal is valid is established, sends a notification signal for notifying the discovery of the search target to the second mobile phone. 32. The search target authentication method according to claim 28, which is transmitted to a terminal. 37. The search server is connected to a request terminal that transmits a request signal requesting a search for the second mobile terminal, and the request terminal makes the request based on a predetermined operation of the request terminal user. A signal is transmitted to the search server, and the search server receives the request signal, and then the second server
3. The search for the portable terminal of the device is started.
32. The search target authentication method according to claim 8. 38. The search server, when the authentication that the search target holding the second mobile terminal is valid is established, sends a notification signal notifying the discovery of the search target to the requesting terminal. 38. The search target authentication method according to claim 37, wherein: