JPH10117382A - Id pack for radio communication, radio communication equipment using the id pack and radio communication method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the ID number of a radio communication equipment loaded with an ID pack from being stolen. SOLUTION: A detection signal output means 26 of a radio communication multi-value processing that receives a radio signal, including an encrypted ID number outputs a detection signal to an ID pack 3 loaded to the radio communication equipment 1, the ID pack 3 decodes the encrypted ID number based on the detection signal and compares it with an ID number stored in advance in the ID pack 3, so as to permit communication of the radio communication equipment 1 based on the result of the comparison processing.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a radio communication device ID in which an ID number for individually recognizing a user is stored.
The present invention relates to a pack, a wireless communication device using the ID pack, and a wireless communication method.

[0002]

2. Description of the Related Art Conventionally, wireless communication devices such as mobile phones and pagers are provided with ID numbers serving as passwords for identifying and specifying users. This ID number is a part of personal identification information including contract details such as expiration date and fee payment method. An ID number of the user is assigned to the wireless communication device, and the ID number is stored.

In a conventional wireless communication system, as shown in FIG. 19, when the power of a wireless communication device 71a is turned on, the wireless communication device 71a always transmits an ID number to a wireless signal 72a.
a to the communication base station 73a. The communication base station 73a is one of the communication base stations installed by the communication companies in various places, and each communication base station has jurisdiction over each area. On the other hand, when the other communication device 71b transmits the telephone number of the wireless communication device 71a, the communication base station 73b having the current location of the other communication device 71b receives the signal of the telephone number. Then, the communication base station 73b inquires of the communication center 74 whether or not the radio signal 72a including the ID number corresponding to the telephone number is transmitted to any of the communication base stations. The communication center 74 is connected to each communication base station online, and constantly monitors the state of each communication base station.

Then, the radio signal 7 is transmitted from the radio communication device 71a.
If 2a is transmitted, the communication center 74 determines whether the user of the wireless communication device 71a has fulfilled a contract such as a period of use and payment of a fee. Then, when the wireless communication device 71a clears all the check items described above and stands by in a state where communication is possible, the communication center 74 issues a communication permission to the communication base station, and as a result, the wireless communication device 71a With the communication device 71b. Further, the communication center 74 establishes these communication devices 71
The connection state of a and 71b is monitored, the communication fee is calculated based on the monitor, and the communication fee is charged to the caller.

The above-mentioned ID number is usually assigned to the wireless communication device 7.
By directly writing to the ID storage unit provided in the main unit 1a, it is provided to the wireless communication device 71a. However, in the case of the method of directly writing the ID number into the wireless communication device 71a, since the ID number is assigned to each wireless communication device, when the same user replaces the wireless communication device body,
The contract with the telecommunications carrier has to be redone, which is a problem that is troublesome. Also, if the user
When transferring the wireless communication device owned by the user to another person, the ID number written in the wireless communication device must be deleted and the ID number of a new user must be newly written in the wireless communication device. Rather, to do this work,
Since the ID number must be rewritten with a ROM writer by bringing the wireless communication device main body to a specialty store, there is a problem that it is more troublesome.

On the other hand, in the field of portable communication devices, there is also known a technique in which an external memory is used so that one person can use one portable communication device. FIG. 20 shows an example of such a technique.
1 shows a communication terminal device described in Japanese Patent No. 5755.

FIG. 20 is a block diagram of a communication terminal device loaded with another member such as an ID card in which sub-address information is stored. The communication terminal device is a communication terminal connected to the ISDN, and includes a main control unit 101, an operation key 102 for giving an operation instruction to the main control unit 101, and an operation key 102 from an ISDN line network 109. A transmission unit 103 for transmitting an incoming signal, a sub-address storage unit 104 for extracting and temporarily storing sub-address information included in the incoming signal, and an external address reading unit for reading an external memory M comprising an ID card in which personal sub-address information is registered. 105 and a sub-address comparing unit 106 for comparing the sub-address information included in the incoming signal with the sub-address information of the individual read from the external memory M. The sub-address comparing unit 106 Phone unit 107 and handset unit only if they match 08 of the call is to be carried out.

According to the prior art shown in FIG. 20, one communication terminal can be used by a plurality of users each having an individual subaddress. That is, I
By registering sub address information for personal use in an external memory M such as a D card and inputting the sub address information from outside, one communication terminal can be used by a plurality of users.

However, in the above configuration, the ISDN
Although the communication terminal connected to the communication terminal can be used by a plurality of users each having an individual subaddress, the address of the communication device itself that is the source of the communication terminal, that is, the ID of the base unit itself It does not change the number. Therefore, for example, when purchasing a communication terminal to which an ID number is not assigned and trying to sell the communication terminal to a general user, or an owner of a rental company, etc., may allow a plurality of persons to use the base unit body in turn. In this case, it is necessary to bring the parent device body to a company or the like that operates the communication network and write or rewrite the ID number with a ROM writer owned by the company or the like. However, this operation is time consuming and costly. This is because the number of the ROM writers and the storage are limited because the ID number is a number that is the basis of charging and has extremely high security. In addition, if the communication device is an old model, the ROM writer for the communication device is often lost, and the work is even more time and cost consuming.

[0010] In view of the above problems, the present applicant has
As shown in FIG. 16, an ID memory 76 of another member in which an ID number is written is loaded into the wireless communication device main body 75, and the ID number is read from the ID memory 76 into the wireless communication device main body 75.
And used as the ID number of the wireless communication device main body 75. According to this method, the ID number is not written directly into the wireless communication device main body 75, but is loaded into an ID memory 76 as a separate member, and as shown in FIG. The ID numbers are exchanged between. Then, an ID number is given to the wireless communication device main body 75,
The wireless communication device body 75 can be used.

Therefore, when the user replaces the wireless communication device main body 75 with a new one, the user can remove the ID memory 76 from the original wireless communication device main body 75 and reload it with a new one, so that all the original contracts are valid. The new wireless communication device body 75 can be used as it is. When the user transfers the wireless communication device main body 75 to another person, the original user removes the ID memory 76 from the wireless communication device main body 75 and transfers the ID memory 76, and the new user replaces the ID memory 76 owned by the user. There is an advantage that troubles between users do not particularly occur when the wireless communication device 75 is used by being loaded into the transferred wireless communication device main body 75.

Further, an information providing service business using a pager can be considered. For example, as shown in FIG. 18, the information providing service company 77 transmits information such as a weather forecast and e-mail arrival information of a computer via a communication base station 79 or the like by a radio signal 78 and transmits a radio signal owned by the user. The information providing service is performed by causing the communication device body 81 to receive the information. The information providing service company 77 groups a plurality of memories 80, such as 100 or 1000, into the same password (= group I).
D) and the number of uses or expiration date are written and sold to an unspecified number of users. This password is a password for receiving the above information, and the user can purchase the memory 80 and load it into the wireless communication device main body 81 owned by the user to receive the above information. .

[0013]

However, in the case of the method of loading the ID memory 76 into the wireless communication device main body 75, the ID number from the ID memory 76 is stored in the wireless communication device main body 7.
5 (see FIG. 17), there is a possibility that this transmission state is intercepted by another person, and as a result, the ID number is decrypted and copied, that is, a problem of so-called “ID number theft” may occur. If the ID number is stolen by another person, it becomes possible for another person to write the stolen ID number in a wireless communication device such as a mobile phone owned by the other person and use it. In this case, for example, if a mobile phone is used for calling based on the ID number stolen by another person,
At that time, the communication fee is charged to the owner of the original ID number.

In the case of loading the memory 80 containing a password, once the password is copied or decrypted, the information service provided by the information providing service company 77 is illegally received without charge. As a result, the damage to the information providing service company 77 may be enormous.

Further, in the field of pagers,
When the ID number is known, the user (company or the like) who knows the ID number writes the same ID number on a plurality of pagers, and sells the pager by adding a child number to the ID number of each pager. It will be possible. In such a case, the pager can communicate with the user by distinguishing the user by the ID number and the additional number. Since the telecommunications carrier is a system that collects a fee for each user who has been given an ID number, there is a problem that if the same ID number is used by a plurality of users, the revenue from the usage contract is drastically reduced.

In view of the above-mentioned problems, an object of the present invention is to provide an ID pack for a wireless communication device configured so that an ID number or the like cannot be stolen, a wireless communication device using the ID pack, and a wireless communication device. Is to provide a method and.

[0017]

According to one aspect of the present invention, there is provided an ID pack for a wireless communication device which is used by being mounted on a wireless communication device. An input unit for inputting at least a portion corresponding to an ID number in a detection signal output from the wireless communication device based on the fact that the wireless signal transmitted as a signal has been received by the wireless communication device; An ID storage unit storing personal identification information, a cryptographic operation unit for decoding an ID number input to an input unit, and comparing an ID number included in the personal identification information with an ID number decrypted by the encryption operation unit. Comprising: a comparison circuit unit, and a confirmation signal transmission unit that transmits a confirmation signal to the wireless communication device based on a result of the comparison processing performed by the comparison circuit unit to enable communication of the communication unit of the wireless communication device. It has become.

According to a second aspect of the present invention, in addition to the first aspect of the present invention, at least one of the number of usable times and the expiration date is written in the ID storage unit as personal identification information. ing.

Still further, a wireless communication device according to a third aspect of the present invention includes a receiving means for receiving an encrypted radio signal from a communication base station, and a detection signal output means for detecting the radio signal and outputting a detection signal. Having a transmitting means for transmitting a radio signal to a communication base station and a communication means for communicating with another communication device via the communication base station, and inputting at least a portion corresponding to an ID number of the detected signal. An input unit and an I / O device in which personal identification information including an ID number is stored in advance.
A D storage unit, a cryptographic operation unit that decrypts the ID number input to the input unit, a comparison circuit unit that compares the ID number stored in the ID storage unit in advance with the ID number decrypted by the cryptographic operation unit, An ID pack for a wireless communication device, comprising: a confirmation signal transmitting unit for transmitting a confirmation signal to the wireless communication device to enable communication of the communication means of the wireless communication device based on a result of the comparison performed by the comparison circuit unit. Is loaded.

Further, in the wireless communication device according to the fourth aspect, in addition to the invention according to the third aspect, an ID pack for the wireless communication device is provided detachably to the wireless communication device. In the wireless communication device according to the fifth aspect, at least one of the number of usable times and the expiration date is written as personal identification information in the ID storage unit of the wireless communication device ID pack.

Further, in the wireless communication method according to the present invention, a receiving step of receiving a wireless signal encrypted and transmitted from a communication base station, and a cryptographic operation for decoding an ID number included in the wireless signal And an ID collating step of collating with an ID number stored in advance.
If the numbers match, the wireless communication device relays the communication base station to establish communication with another communication device.

Further, according to a seventh aspect of the present invention, there is provided a wireless communication method comprising:
In addition to the sixth aspect, the encryption operation step and the ID collation step are performed in an ID pack loaded in the wireless communication device.

Note that the wireless communication device described in each of the above-mentioned claims is a portable telephone including a PHS (Personal Handy Phone System), a pager, or the like. The communication means is a two-way communication in the case of a mobile phone, and thus includes a receiving means for receiving a radio signal and a transmitting means for transmitting. On the other hand, in the case of a pager, the communication is one-way communication (so-called transmission is not possible), and the communication means means reception means. In the case of a wireless communication device that is allowed to transmit only information, the transmission means is the communication means.

According to the ID pack of the first aspect, the ID pack
The number is input to the ID pack while being encrypted, is decoded in the ID pack, performs a comparison process, and transmits a confirmation signal based on the result to enable the communication circuit of the wireless communication device to communicate. Even if a signal exchanged between the machine and the ID pack is intercepted externally, the exchanged ID number is encrypted and cannot be easily decrypted. Therefore, the ID number is not easily stolen.

According to the second aspect of the present invention, in addition to the first aspect, at least one of the number of usable times and the expiration date is written as personal identification information in the ID storage unit. For example, a company that provides a time-limited information providing service, etc.,
It is possible to use the D pack in a business form in which it is sold alone.

According to the third aspect of the present invention, at least a portion corresponding to the ID number of the encrypted detection signal output from the wireless communication device is decrypted and compared with the ID number stored in advance. An ID pack for processing is loaded in the wireless communication device. That is, I
The D number is input to the ID pack as encrypted,
Since it is decoded in the pack and performs a comparison process, and transmits a confirmation signal for enabling the wireless communication device to communicate, it is assumed that a signal exchanged between the wireless communication device and the ID pack is intercepted outside. However, since the exchanged ID numbers are encrypted, they cannot be easily decrypted. Therefore, I
It is difficult for the D number to be stolen.

According to the fourth aspect of the present invention, in addition to the third aspect of the present invention, the ID pack is provided so as to be detachable from the wireless communication device. , Used alternately by multiple users, or
It becomes possible to use a plurality of wireless communication devices with one D-pack, thereby increasing convenience.

According to the fifth aspect of the invention, in addition to the third aspect of the invention, at least one of the number of times of use and the expiration date is written as personal identification information in the ID storage unit. A business providing an attached information providing service or the like sells the ID pack in which the personal identification information is written alone, and the user purchases the ID pack and loads the ID pack into a wireless communication device to provide the information providing service. It can be used.

According to the present invention, the radio signal transmitted from the communication base station after being encrypted is received, the ID number is decoded, and the radio signal is collated with the ID number stored in advance. If they match, communication with another communication device is enabled, so even if a wireless signal exchanged between the wireless communication device and the communication base station is intercepted outside, the exchanged ID number is encrypted. And it cannot be easily deciphered. Therefore, the ID number is not easily stolen.

According to a seventh aspect of the present invention, in addition to the sixth aspect, a cryptographic operation step and an ID
Since the ID pack for performing the verification step is loaded into the wireless communication device to enable communication with another communication device, one wireless communication device can be used alternately by a plurality of users, or the ID pack 1 It becomes possible to use a plurality of wireless communication devices by itself, which increases convenience.

[0031]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A wireless communication device ID pack according to a first embodiment of the present invention, a wireless communication device using the wireless communication device ID pack, and a wireless communication method are shown in FIG.
Will be described in detail with reference to FIG. FIG. 1 shows a pager 1 that is a wireless communication device, and an ID pack 3 that is loaded in an ID pack loading section 2 provided in the pager 1. The ID pack loading unit 2 is equipped with a pager 1
Is formed by a notch hole provided by notching a part of the outer surface portion of the. Note that the ID pack 3 is provided with an electric terminal portion 4, which is electrically connected to a connection electrode (not shown) on the pager 1 side at the time of loading.
An ID number is recorded in the ID pack 3 as described later.

As shown in FIG. 2, the pager 1 is formed of a case body, and a surface portion 5 of the pager 1 has a receiving portion as a receiving means for receiving a radio signal 7 generated from the communication base station 6. Antenna 8 and communication base station 6 from another communication device
A display unit 9 for displaying a message or the like in characters based on a wireless signal 7 transmitted via the display unit 9 is provided. The display unit 9 is formed by a liquid crystal screen or the like. A sounding speaker 10 that emits an alarm sound is provided on a side surface of the pager 1 to notify the user of the arrival of the radio signal 7.

The radio signal 7 from the communication base station 6 is
It is composed of personal identification information such as an ID number given to the pager 1 and message information transmitted from another communication device. Therefore, the wireless signal 7 is encrypted as described later in order to prevent an ID number or the like from being intercepted and illegally decrypted. Further, the receiving antenna 8 is formed by fixing a conductive metal member such as a copper foil formed in a thin film shape to the surface portion 5 and coating the same with an insulating member such as a resin. The radio signal 7 arriving at the receiving antenna 8 is appropriately modulated and amplified by a signal modulation circuit (not shown) built in the pager 1. The pager 1 receives the radio signal 7
When an ID frame is present in the ID pack, a baseband signal (detection signal) such as NRZ is output to the ID pack 3.

On the other hand, as shown in FIG.
A different I
ID for loading ID pack 3 with D number
A pack loading section 2 is formed. The ID pack loading section 2 includes a substantially circular bottom surface portion 12 and a side wall portion 1 that is vertically formed continuously from an outer peripheral end to an outer surface of the bottom surface portion 12.
3 are formed. And the bottom part 12
Is provided with a communication hole 14 for communicating between the outside and the inside of the pager 1, and a waterproof / dustproof packing 15 formed of an elastic member such as rubber is fixed near the outer peripheral end. . The side wall portion 13 is provided with two protrusions 16 protruding into the ID pack loading portion 2 at two places.
The projections 16 provided at these two locations are ID
In the depth direction of the pack loading section 2, it is formed at the same height position slightly outside, that is, at a shallow portion from the center.

A sounding speaker 10 and an electric circuit board 17 are fixed inside the pager 1. The sounding speaker 10, the electric circuit board 17, and the receiving antenna 8 are electrically connected to each other by a lead wire or the like. That is, when the wireless signal 7 from the communication base station 6 is received by the receiving antenna 8, the wireless signal 7 is input to the electric circuit board 17. When the pager 1 is in a communicable state, the sounding speaker 10 sounds so as to notify the user of the communication. The electric circuit board 17 is fixed inside the pager 1 near the bottom portion 12 of the ID pack loading section 2. On the electric circuit board 17, a connection terminal portion 18 for connecting to the electric terminal portion 4 of the ID pack is provided upright. The connection terminal portion 18 serves as an electrode, and the ID pack loading portion 2
Through the communication hole 14 provided in the bottom portion 12 of
It is exposed inside the D-pack loading section 2. Then, when the ID pack 3 is completely loaded into the ID pack loading section 2,
The electric terminal 4 and the connection terminal 18 of the ID pack 3 are connected.

The ID pack 3 is inserted into the ID pack loading section 2 configured as described above, and is loaded and held while being rotated in the ID pack loading section 2. The pager 1 is given an ID number by loading the ID pack 3. The outer diameter structure of the ID pack 3 is formed in a shape that can be stored in the ID pack loading section 2. Specifically, as shown in FIG.
9, a substantially cylindrical shape including a side surface portion 20 and a substantially circular bottom portion 21. The upper surface portion 19 is provided with a screwdriver insertion groove 22 for inserting a flathead screwdriver or an end face of a coin and for hooking a flathead screwdriver or a coin when rotating the ID pack 3. Also, on the side surface part 20,
An engagement groove 23 is provided that serves as an engagement portion that engages with the protrusion 16 of the ID pack loading section 2 and that serves as guide means when the ID pack 3 is inserted and rotated. The two engagement grooves 23 are provided on the side surface portion 20 so as to be point-symmetric about the rotation center.

The engaging groove 23 is formed by a linear groove 24 linearly formed in the height direction of the ID pack 3 from the outer peripheral end portion of the bottom surface 21 of the ID pack 3, and an ID 24 formed by an end 24 a of the linear groove 24. The pack 3 is configured to include a turning groove 25 formed to extend in the direction of the upper surface 19 while turning the side surface 20 in the circumferential direction. Further, the connection terminal 18 of the pager 1 is provided on the bottom 19.
An electric terminal portion 4 for electrically connecting to the outside is exposed on the outer surface.

The electric circuit board 17 of the pager 1
Has a detection signal output means 26, a reception means 27, a transmission means 28, and a decoder 29, as shown in FIG. The detection signal output means 26 transmits the radio signal 7 received by the receiving antenna 8 to the decoder 29 in response to the arrival of the radio signal 7. The decoder 29 outputs the I
It is a logic circuit for detecting whether or not data related to the D number is included. Based on the logical calculation performed in the decoder 29, the detection signal output means 26 sends the ID pack 3 a detection signal related to the ID number. Is output. The receiving unit 27 converts the wireless signal 7 transmitted from another communication device into character information and displays the character information on the display unit 9 when the wireless signal 7 is received. Also, the transmitting means 28
Transmits the personal identification information including the encrypted ID number to the communication base station 6 when the power of the pager 1 is on. Note that the decoder 29 is also configured to generate a command signal for enabling the receiving unit 27 to receive.

On the other hand, I having the outer structure as described above
The internal structure of the D pack 3 is constituted by an integrated circuit,
It comprises an input unit 30, a cryptographic operation unit 31, a comparison circuit unit 32, an ID storage unit 33, and a confirmation signal transmission unit.

The input section 30 receives the detection signal output from the detection signal output means 26 of the pager 1. The detection signal is obtained by converting a portion corresponding to the ID number of the radio signal 7 that has been encrypted from the communication base station 6 and arrived at the pager 1 into a baseband signal. Therefore, in this state, the ID number is still encrypted. Further, the cryptographic operation unit 31 is formed of a mask ROM, and stores the encrypted ID as it is.
An operation method for decrypting the number, that is, decrypting the code is stored. The decrypted ID number is input to the comparison circuit unit 32.

On the other hand, the ID storage section 33 is provided with an EEPROM, which is a kind of nonvolatile memory, and this EEPROM is represented by personal identification information such as expiration date and key bits for encryption. A stored encryption key table and an ID number used after decryption are stored. The EEPROM may be configured to set the number of times of use instead of the period of use, or to set the number of times of use in addition to the period of use.

Then, the comparison circuit section 32 compares the ID number stored in the ID storage section 33 in advance with the ID number decrypted by the cryptographic operation section 31. The result of the comparison processing in the comparison circuit unit 32 is transmitted to the confirmation signal transmission unit 34. If the ID number based on the input of the radio signal 7 matches the ID number stored in advance, the confirmation signal transmitting unit 34 causes the receiving unit 27 of the pager 1 to be able to receive. A confirmation signal is transmitted to the decoder 29.

It should be noted that the confirmation signal transmitting section 34 always has the ID storage section 33 when the power of the pager 1 is on.
Has transmitted the personal identification information including the ID number, and the personal identification information is constantly transmitted to the transmitting means 28 of the pager 1.

The reason why the radio signal 7 transmitted from the communication base station 6 and received by the pager 1 is encrypted as described above is that the ID number stored in the ID pack 3 is illegally decoded. In order to prevent this, an example of the encryption is shown below.

For example, as shown in FIG. 6A, among the radio signals 7 transmitted from the communication base station 6, the data relating to the ID number included in the incoming radio signal 7 is “0” and “0”.
It is generated into a 31-bit number consisting of 1 ". Of these, the first is a signal indicating the ID number and becomes" 1 ".The following 20 bits (information bits; b1 to b2)
0) is usually used as an ID number. The last 10 bits are check bits for error correction, which are automatically generated when information bits are generated. Of the 31-bit numbers configured in this way, specific portions, for example, b1, b8, and b15 are used as encryption key bits. If the value is as shown in FIG. 6B, eight numbers are designated as the encryption key numbers. Then, the information is transmitted from the communication base station 6 in a state where the bits excluding b1, b8, and b15 among the information bits are encrypted based on the encryption key number.

As the encryption key bit, for example, b2
Like b12 and b22, b22, which is a bit in the check code, can be incorporated as a bit of the encryption key. Also in this case, eight numbers are designated as encryption key numbers. Then, out of the third (b2) to the 22nd (b21), bits excluding b2 and b12 are encrypted based on the encryption key number, and transmitted from the communication base station 6 to the pager 1. Note that b22
Is for the automatically generated check code part,
The signals of b22 generated from all combinations of the 20 ID numbers including b2 and b12 are "0" and "1".
Is confirmed, and then adopted as an encryption key bit. For this reason, by combining b22 with the other two key bits b2 and b12, eight encryption key numbers can be reliably generated.

When the radio signal 7 is transmitted from the communication base station 6, as shown in FIG. 7, the pager 1 determines whether or not the radio signal 7 has data (ID frame) relating to the ID number. (Step S1). Even when there is no ID frame in the radio signal 7 (that is, when the pager 1 is not called), the pager 1 receives the radio signal 7 from the communication base station 6 (another radio from another communication device). (Including information about the communication device) has been received. Then, the pager 1 confirms whether or not information based on the wireless signal 7 is being transmitted (step S).
2).

When the arrival of the radio signal 7 is confirmed, it is confirmed whether or not a confirmation signal has been received from an ID pack 3 described later, that is, whether or not the ID number is collated and the radio signal matches (step). S3). If there is an ID frame in the wireless signal 7 in (Step S1), only the data portion related to the ID number in the wireless signal 7 is transferred to the ID pack 3 as a baseband signal (Step S4).

The data concerning the ID number transmitted to the ID pack 3 is decrypted by the cryptographic operation section 31. That is, the encryption key number is determined from the signals b1, b8, and b15, and the encryption rule is read with reference to the encryption key table in the EEPROM (step S).
5). Then, an encryption key is obtained, an encryption operation is performed using an operation method in the mask ROM, and an actual ID number is extracted (step S6).

Then, the ID number is compared with an ID number stored in the ID storage section 33 in advance (step S7). As a result of the comparison, if the bit difference is within 2 bits, for example, it is recognized as a correct ID number, and an ID match flag is set. This ID match flag corresponds to a kind of confirmation signal. At this time, the usage counter is added at the same time (step S8). And
The confirmation signal transmitting unit 34 informs the pager 1 that the ID match flag has been set.

At this time, if the number of times of use is set based on a special contract, the number of times of use is calculated by the counter. You may do so.
Further, when the pager 1 is notified that the ID match flag has been set, the above-described steps S2, S3,
That is, confirmation of information transmission and confirmation of a confirmation signal based on coincidence of ID numbers are performed. As a result, the pager 1 starts receiving the wireless signal 7 from another communication device (step S).
9).

In the encryption key table in the EEPROM, for example, specific encryption keys are written corresponding to the above eight types of encryption key numbers. As for how to apply encryption,
In addition to a method in which both the encryption algorithm and the encryption key are kept secret, an algorithm public type encryption method in which the encryption algorithm is made public but the encryption key is kept secret can also be used. The algorithm public type includes a secret encryption scheme in which the encryption key and the decryption key are the same, such as the FEAL scheme and the DES scheme, and an RSA encryption scheme in which the encryption key and the decryption key are different. But it can be adopted. Also, simply add “EX-OR” or
Other encryption schemes such as triple and triple are also conceivable, but in this embodiment, RS
A encryption method is adopted.

An ID pack 3 for a wireless communication device and a pager 1 as a wireless communication device configured as described above.
Will be used in the form shown below. When the power supply (not shown) of the pager 1 is turned on, the personal identification information stored in the ID storage unit 33 of the ID pack 3 is input to the confirmation signal transmission unit 34, as shown in FIG. This personal identification information includes an ID number,
Further, when the portion corresponding to the ID number in the personal identification information is encrypted by the cryptographic operation section 31, the personal identification information including the encrypted ID number is transmitted to the confirmation signal transmitting section 34.
Is transmitted to the transmission means 28 of the pager 1.

Then, as shown in FIG. 8, the pager 1 constantly transmits the radio signal 7 including the encrypted ID number to the communication base station 6 via the transmission means 28. The communication base stations 6 are installed in a large number of places in each area where the radio signal 7 can easily reach, that is, nationwide, and each communication base station 6 is connected online with a host computer W of a central communication center (communication company). . Telecommunications carriers
The current location of the pager 1 can be ascertained based on information from the base station 6. Note that personal identification information of each user such as an ID number is registered in the host computer W of the central communication center.

As shown in FIG. 9, when another communication device 1A transmits the telephone number of pager 1, radio signal 7A including this telephone number is transmitted from communication device 1A to communication base station 6. . Upon receiving the wireless signal 7A, the communication base station 6 determines which communication base station 6 is receiving the wireless signal 7 including the ID number corresponding to the telephone number. When the radio signal 7 is transmitted from the pager 1 to the illustrated communication base station 6, the personal identification information included in the radio signal 7, for example, the expiration date and the number of times of use are included in the contract. The host computer W is inquired as to whether or not it is fulfilled as described above. When the transmission of the radio signal 7 from the pager 1 is in a normal state, that is, when there is no problem as a result of the inquiry, the other communication device 1A can communicate with the pager 1. The state in which the communication device 1A is communicating with the pager 1 is monitored by the host computer W via the communication base station 6, and is reflected in the personal identification information of the caller, that is, the number of times of use, the communication fee, and the like. It will be.

The ID pack 3A shown in FIG.
There are also usage forms of 3B, 3C and pager 1. The information providing service company 35 transmits information such as a weather forecast and incoming e-mail information of a computer to the communication base station 6 by a radio signal 7B. In the communication base station 6, based on the radio signal 7B from the information providing service company 35, the information is transmitted to the users 36A, 36B, 3 by the radio signal 7C.
Send to 6C. The password (= group ID) in the wireless signal 7C is encrypted, and the pager 1 cannot receive the information unless the code is decrypted.

On the other hand, the information providing service company 35 sends ID packs 3A, 3A to users 36A, 36B, 36C.
3B and 3C are sold. This ID pack 3A, 3B, 3
In C, a decryption means for decrypting the encryption applied to the password is incorporated, and an ID number for the information providing service company 35 and users 36A, 36B, 36
The contract contents that C has concluded with the information providing service company 35 are written. This contract is valid for user 36
A, 36B, and 36C set the limitation of the use period, the number of times of use, and the like according to their own specifications. When the users 36A, 36B, and 36C load the ID packs 3A, 3B, and 3C into their own pagers 1, the pagers 1 enter the group I in the radio signal 7C.
It will be possible to decrypt the code related to D. Then, the pager 1 can receive the information provided by the information providing service company 35 by decrypting the encryption of the wireless signal 7C and receiving the information.

As described above, the ID pack 3 for the wireless communication device according to the first embodiment of the present invention and the wireless communication device using this ID pack 3, ie, the pager 1
In the case of, the ID number or group ID included in the radio signal 7 transmitted from the communication base station 6 to the pager 1
Even if the wireless signal 7 from the communication base station 6 is intercepted, the ID number cannot be easily decrypted. The ID number in the radio signal 7 transmitted from the pager 1 to the communication base station 6 is also encrypted. Further, the ID number exchanged between the ID pack 3 and the pager 1 is also encrypted, so that even if the exchange between the ID pack 3 and the pager 1 is intercepted, the ID number remains unchanged. It cannot be easily deciphered.

As described above, the communication base station 6 and the pager 1
The ID numbers and group IDs exchanged between the pager 1 and the ID pack 3 are all encrypted, and the ID numbers and the pockets included in the radio signal 7 are decrypted by decrypting these codes. Since the comparison processing for comparing the ID number assigned to the bell 1 is performed in the ID pack 3, the ID number is less likely to be stolen.

In the first embodiment, the pager 1 is employed as a wireless communication device, but the wireless communication device may be a portable telephone 37. FIG. 11 shows a mobile phone 37 according to a second embodiment of the present invention. The mobile phone 37 includes a main body 38 composed of a case body and a main body 3.
8 mainly includes a receiving antenna 39 provided so as to protrude from the outer surface, an alarm device (not shown), a transmitting section 40 and a receiving section 41.

An ID pack loading section 43 for loading an ID pack 42 storing an ID number different for each user of the mobile phone 37 is formed on the back surface of the main body 38 of the mobile phone 37. . This ID pack loading section 4
3 has the same configuration as that described in the first embodiment of the present invention, and the ID pack 42 loaded in the ID pack loading section 43 is also shown in the first embodiment. It has the same external shape and internal structure as the ID pack 3. In addition, as shown in FIG. 12, an electric terminal portion 45 for electrically connecting to the mobile phone 37 is exposed on the outer surface of the bottom surface portion 44 of the ID pack 42.

The ID pack 42 is inserted into the ID pack loading section 43 configured in the same manner as in the first embodiment, and is loaded and held while rotating in the ID pack loading section 43. Has become. Therefore, the mobile phone 37 is provided with an ID number by loading the ID pack 42 storing the ID number.

On the other hand, as shown in FIG. 11, a speaker section 46, a microphone section 47, and an electric circuit board 48 are fixed inside the main body section 38 of the portable telephone 37. The speaker section 46, the microphone section 47, and the electric circuit board 48 are electrically connected to each other by a lead wire or the like.
The speaker section 46 forms a part of the transmitting section 40, and the microphone section 47 forms a part of the receiving section 41. The electric circuit board 48 is fixed to the vicinity of the bottom surface of the ID pack loading section 43 inside the main body 38. On the electric circuit board 48, connection terminals 49 connected to the electric terminal portions 45 of the ID pack 42 are provided upright. The connection terminal 49 is an electrode,
It penetrates through a communication hole provided on the bottom surface of the ID pack loading section 43 and is exposed inside the ID pack loading section 43. Then, when the ID pack 42 is completely loaded into the ID pack loading section 43, the electric terminal section 45 provided on the bottom section 44 of the ID pack 42 and the connection terminal section 49 are connected.

Further, as shown in FIG. 13, the electric circuit board 48 includes an amplifying circuit 51 for amplifying an externally encrypted radio signal 50 inputted to the receiving antenna 39,
The wireless signal 50 processed by the amplifier circuit 51 is detected, and the detected signal formed by the detection is transmitted to the ID pack 4.
2, and a detection signal output means 52 for transmitting the detection signal to the second detection signal.
The detection signal output means 52 is, specifically, a radio signal 50.
And a synchronization unit 54 for detecting a flow of a series of data bits such as bit synchronization, communication speed detection, and word synchronization detection from a detection signal detected by the reception detection unit 53. A part of the data (= ID-related data) separated by the synchronization unit 54 is
, And a transmission unit 55 for transmitting the data. Further, based on the confirmation signal of the ID pack 42, the transmitting section 40 and the receiving section 41 as communication means are further provided on the electric circuit board 48.
Is provided. In addition,
The drive circuit unit 56 transmits a radio signal 50 to the communication base station 6 to notify that the mobile phone 37 is in a receivable state based on the confirmation signal of the ID pack 42 when the power of the mobile phone 37 is on. .

The reason why the above-described radio signal 50 is encrypted is to prevent the ID number stored in the ID pack 42 and the ID number transmitted from the radio base station 6 from being illegally decoded. For this reason, the encryption and communication method employs the same method as that of the above-described first embodiment.

The wireless communication device ID packs 3 and 42 and the wireless communication devices and wireless communication methods using the ID packs 3 and 42 in each embodiment of the present invention are not limited to the above-described configurations. Various changes can be made without departing from the spirit of the invention. For example, in each of the embodiments, the ID packs 3 and 42 are formed in a substantially cylindrical shape, but may be formed of a square ID pack 57 as shown in FIG. When this rectangular ID pack 57 is used, the ID pack loading section 58 is also formed in a rectangular shape according to the shape of the rectangular ID pack 57. When formed in this manner, the square ID pack 57 is inserted so as to be pushed into the ID pack loading section 58. When removing the square ID pack 57, the hook 60 is hooked on the notch 59 as a hook groove, and is pulled out toward the front (in the direction of arrow Z).

In the ID pack loading section 58 thus configured, a waterproof / dustproof packing 61 is provided, and an electric circuit board in a wireless communication device (not shown) can be energized. The electrode 62 protrudes. The ID pack 57 is arranged in the ID pack loading section 58 so as to be able to conduct electricity to the wireless communication device.

In each of the embodiments of the present invention, the protrusions 1 engaging with the engagement grooves 23 are provided on the side surfaces of the ID packs 3 and 42.
6, the relationship between the engagement groove 23 and the protruding portion 16 may be reversed. That is, as shown in FIG.
The protrusion 65 may be provided on the side surface 64 of the D pack 63, and the engagement groove 68 may be provided on the side wall 67 of the ID pack loading unit 66.

Further, in each embodiment of the present invention,
As a warning device for notifying the user of the arrival of the radio signal 7, a sound device such as the speaker unit 46 and the sounding speaker 10 is provided, but another method such as vibration may be used. Also, the packings 15 and 61 for waterproofing and dustproofing are not I
It may be provided on the side surface portion 20 of the D pack 3 or on both the ID pack loading section 2 and the ID pack 3.

The radio signals 7, 7C and 50 are as follows.
It is preferable to transmit the data of the ID number by encrypting with a different encryption key number every time transmission is performed or each time a predetermined time elapses. In this way, when the eavesdropper who performs eavesdropping that is an illegal act intercepts the radio signals 7, 7C, 50, a number that is considered to correspond to the ID number is caught by a different number every time the eavesdropping is performed. . Therefore, I
The D number is reduced to the extent that it is never stolen. The encrypted portion of each of the wireless signals 7, 7C, 50 may be transmitted and received by encrypting not only the portion such as the ID number or the group ID but also the entire information.

Further, as the wireless communication device of the present invention, in addition to the pager 1 and the portable telephone 37, a wireless communication device combined with a portable computer or a wireless communication device for handling wireless signals transmitted and received using a satellite. For example, various wireless communication devices can be adopted.

[0072]

According to the first aspect of the present invention, the ID number is input to the ID pack while being encrypted, is decrypted in the ID pack, performs a comparison process, and transmits a confirmation signal based on the result. To make the communication circuit of the wireless communication device communicable. Therefore, even if a signal exchanged between the wireless communication device and the ID pack is intercepted outside, it cannot be easily decoded. Therefore, security of confidential matters between the communication carrier and the user is maintained, and the reliability of the portable communication device is improved.

According to the second aspect of the present invention, in addition to the first aspect, at least one of the number of usable times and the expiration date is written as personal identification information in the ID storage unit. For example, a company that provides a time-limited information providing service, etc.,
The D pack can be used in a business form in which the D pack is sold alone, and the convenience of the portable communication device is further improved.

According to the third aspect of the present invention, at least a portion corresponding to the ID number of the encrypted detection signal output from the wireless communication device is decrypted and compared with the ID number stored in advance. An ID pack for processing is loaded in the wireless communication device. That is, I
The D number is input to the ID pack as encrypted,
The ID number is less likely to be stolen because it is decoded in the pack, performs a comparison process, and transmits a confirmation signal for activating the wireless communication device. For this reason, security of confidential matters between the communication company and the user is maintained, and the reliability and convenience of the portable communication device are improved.

According to the fourth aspect of the invention, in addition to the third aspect of the present invention, since the wireless communication device is provided so as to be detachable, for example, one wireless communication device can be connected to a plurality of wireless communication devices. It is possible for the user to take turns or use a plurality of wireless communication devices with one ID pack, and the convenience of the portable communication device is further improved.

According to the fifth aspect of the invention, in addition to the third aspect of the invention, at least one of the number of times of use and the expiration date is written in the ID storage unit as personal identification information. A business providing an attached information providing service or the like sells the ID pack in which the personal identification information is written alone, and the user purchases the ID pack and loads the ID pack into a wireless communication device to provide the information providing service. It can be used, and the convenience of the portable communication device is further improved.

According to the sixth aspect of the present invention, while receiving the radio signal encrypted and transmitted from the communication base station, the ID number is decrypted and collated with the previously stored ID number. Since it communicates with another communication device, even if a wireless signal is intercepted, the ID number is not decrypted, security of confidential matters between the communication company and the user is maintained, and the reliability of the portable communication device is improved.

According to a seventh aspect of the present invention, in addition to the sixth aspect, a cryptographic operation step and an ID
Since the ID pack for performing the verification process is loaded in the wireless communication device, for example, one wireless communication device can be used alternately by a plurality of users, or a plurality of wireless communication devices can be used by one ID pack. And the convenience of the portable communication device is further improved.

[Brief description of the drawings]

FIG. 1 is a wireless communication device ID according to a first embodiment of the present invention.
FIG. 2 is a perspective view of a main part showing a main part structure of a pack and a pager which is a wireless communication device.

FIG. 2 is a perspective view showing the entire structure of the pager shown in FIG.

FIG. 3 is a sectional view of the pager shown in FIG. 2;

FIG. 4 is a perspective view showing the entire structure of the ID pack shown in FIG. 1;

FIG. 5 is a block diagram showing an internal structure of the ID pack and the pager shown in FIG. 1;

FIG. 6 is an explanatory diagram showing an example of an ID number used for the pager shown in FIG. 1 and an example of a key bit at the time of encrypting the ID number, where (A) shows the ID number; (B) is a diagram showing key bits when encrypting an ID number.

FIG. 7 is a flowchart illustrating a wireless communication method using an ID pack and a pager according to the first embodiment of this invention.

FIG. 8 is a diagram showing a relationship between the pager shown in FIG. 1 and a communication base station.

9 is a diagram showing a relationship between the pager shown in FIG. 1, another communication device, and a communication base station.

FIG. 10 is a diagram showing a relationship between a user who uses the pager shown in FIG. 1, a communication base station, and an information providing service company.

FIG. 11 shows a wireless communication device I according to a second embodiment of the present invention.
It is sectional drawing which showed the mobile phone which is a D-pack and a wireless communication device.

FIG. 12 is a perspective view showing the entire structure of the ID pack shown in FIG.

FIG. 13 is a block diagram showing an internal structure of the mobile phone shown in FIG.

FIG. 14 is a cross-sectional view showing a modification of the ID pack and the ID pack loading unit of the wireless communication device according to each embodiment of the present invention.

FIG. 15 is an exploded perspective view showing another modification of the ID pack and the ID pack loading unit of the wireless communication device according to each embodiment of the present invention.

FIG. 16 is a perspective view showing a wireless communication device invented by the present applicant and an ID memory loaded in the wireless communication device.

FIG. 17 is a diagram for explaining exchange of ID data between the ID memory and the portable communication device shown in FIG. 16;

FIG. 18 is a diagram illustrating an information providing service business using a portable communication device to which a memory is attached.

FIG. 19 is a diagram showing a wireless communication system using a conventional portable communication device.

FIG. 20 is a block diagram illustrating an internal structure of a conventional communication terminal device.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 pager (wireless communication device) 2 ID pack loading unit 3 ID pack 7 wireless signal 26 detection signal output unit 27 communication unit 28 transmission unit 30 input unit 31 cryptographic operation unit 32 comparison circuit unit 33 ID storage unit

Claims (7)

[Claims] 1. An ID pack for a wireless communication device which is used by being mounted on a wireless communication device, based on a wireless signal transmitted from a communication base station being encrypted and received by said wireless communication device. Of the detection signal output from the wireless communication device, an input unit that inputs at least a part corresponding to an ID number, an ID storage unit that stores personal identification information including an ID number in advance, and an input unit that is input to the input unit. A cryptographic operation unit for decrypting the ID number, a comparison circuit unit for comparing the ID number included in the personal identification information with the ID number decrypted by the cryptographic operation unit, and a comparison process performed by the comparison circuit unit. And an acknowledgment signal transmitting unit for transmitting an acknowledgment signal for enabling communication of the communication means of the wireless communication device to the wireless communication device based on a result of the above. 2. The wireless communication ID pack according to claim 1, wherein at least one of the number of usable times and the expiration date is written in the ID storage unit as the personal identification information. 3. A receiving means for receiving an encrypted radio signal from a communication base station, a detection signal output means for detecting the radio signal and outputting a detection signal, and transmitting a radio signal to the communication base station. A communication unit for communicating with another communication device via the communication base station, and an input unit for inputting at least a portion corresponding to an ID number of the detection signal; An ID storage unit storing personal identification information including: an encryption operation unit for decoding the ID number input to the input unit; an ID number stored in the ID storage unit and the encryption operation unit A comparison circuit for comparing the decoded ID number with the ID number, and a confirmation signal for enabling the communication means of the wireless communication device to communicate based on a result of the comparison performed by the comparison circuit; A wireless communication device using the wireless communication device ID pack by loading and electrically connecting the wireless communication device ID pack including a confirmation signal transmitting unit to be transmitted to the device. 4. The wireless communication device using an ID pack according to claim 3, wherein the wireless communication device ID pack is provided detachably from the wireless communication device. 5. The ID pack according to claim 3, wherein at least one of the number of usable times and the expiration date is written as the personal identification information in the ID storage unit of the wireless communication ID pack. Wireless communication device. 6. A receiving step of receiving a radio signal transmitted by being encrypted from a communication base station, a cryptographic operation step of decoding an ID number included in the radio signal, and an ID number stored in advance. And an ID collating step of collating with the wireless communication device, wherein when the two ID numbers match, the wireless communication device relays the communication base station to enable communication with another communication device. Wireless communication method. 7. The wireless communication method according to claim 6, wherein said encryption operation step and said ID collation step are performed in an ID pack loaded in said wireless communication device.