JP2002197421A - Wristwatch-type information device, information recording medium, communication system and method for communication control of the information device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device which is free of the need for replacing a wristwatch at every time of receiving various kinds of service by using the wristwatch. SOLUTION: A card slot for inserting a memory card 400 with information, which a user requires for the purpose of receiving a service stored thereon is provided at the rear lid 101 of a wristwatch-type information device 100. By detachably mounting the card 400 to the device 100 such as this, a user can receive various services by merely properly exchanging a plurality of cards 400, using a single device 100.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wristwatch-type information device used by being worn on a user's wrist, a communication system using the device, a communication control method for the device, and an information recording medium recording the method. About.

[0002]

2. Description of the Related Art A wristwatch incorporating a non-contact type IC card is known. For example, a service in which electronic money that can be used as a subway fare is stored in the non-contact IC card, and when the user passes through a ticket gate, the fare is deducted from the electronic money in the IC card. Is being put to practical use. In addition, electronic money that can be used as a product price is stored in a non-contact type IC card, and when a user purchases a product at a store, this IC is used.
Cashless shopping, in which payment is made using electronic money in a card, has also been proposed.

[0003]

A wristwatch as described above is usually designed based on the unique specifications of each service provider, and is poor in versatility. For example, when receiving a service provided by a subway company or when performing cashless shopping at a store, the user needs to use a wristwatch corresponding to each service. As described above, when the service to be received is different, the user must change the wristwatch corresponding to the service, and there is a problem that the usability is very poor.

The present invention has been made under such a background, and provides a mechanism in which a user does not have to change the device each time the user receives various services using a wristwatch-type information device. The purpose is to do.

[0005]

In order to solve the above-mentioned problems, according to the first aspect of the present invention, a first communication means for communicating with an external device for providing a service, and a first communication means for receiving the provision of the service. Mounting means for removably mounting a recording medium storing data necessary for the recording medium; second communication means for communicating with the recording medium mounted by the mounting means;
Control means for relaying data exchange between the external device and the recording medium by controlling the first communication means and the second communication means.

According to a second aspect of the present invention, in the wristwatch-type information device of the first aspect, when the first communication means receives a polling signal transmitted intermittently by the external device, the first communication means responds thereto. And transmitting a response signal to the external device.

According to a third aspect of the present invention, in the wristwatch-type information device according to the first aspect, the mounting means is provided on a back cover of the device.

According to a fourth aspect of the present invention, in the wristwatch-type information device of the first aspect, there is provided a power supply means for supplying power to the information recording medium, whereby the information recording medium is of the wristwatch type. The communication with the second communication means of the information device is performed.

According to a fifth aspect of the present invention, in the wristwatch-type information device according to the first aspect, the second communication means wirelessly communicates with the information recording medium.

According to a sixth aspect of the present invention, in the wristwatch-type information device according to the fifth aspect, the second communication means transmits a data transmission request command signal and responds to the data transmission request command signal. A response signal transmitted from the information recording medium is received.

According to a seventh aspect of the present invention, in the wristwatch-type information device of the first aspect, when the first communication means receives a polling signal transmitted intermittently in a wireless communication area of the external device, In response to this, a response signal is transmitted to the external device to start communication with the external device, and the second communication means communicates between the first communication means and the external device. After the start of the data transmission request command signal, a response signal transmitted from the information recording medium in response to the data transmission request command signal is received.

[0012] According to an eighth aspect of the present invention, in the wristwatch-type information device of the first aspect, there is provided a first authentication means for confirming the validity of the external device using the first communication means. And

According to a ninth aspect of the present invention, in the wristwatch-type information device according to the first aspect, there is provided a second authentication unit for confirming the validity of the information recording medium using the second communication unit. Features.

According to a tenth aspect of the present invention, there is provided a storage means which is detachably attachable to a wristwatch-type information device, stores data necessary for receiving a service, and communicates with the wristwatch-type information device. And a control unit for writing data to the recording unit and reading data stored in the recording unit in response to a request transmitted from the wristwatch-type information device via the communication unit. And characterized in that:

According to an eleventh aspect of the present invention, in the information recording medium according to the tenth aspect, the information recording medium is connected to the wristwatch type information device by receiving power from a power supply device provided in the wristwatch type information device. Communication is performed.

According to a twelfth aspect of the present invention, in the information recording medium according to the tenth aspect, the communication means wirelessly communicates with the wristwatch-type information device.

According to a thirteenth aspect of the present invention, in the information recording medium according to the twelfth aspect, a rectifier for rectifying a radio signal received from the wristwatch-type information device is provided, and the rectifier rectifies the radio signal. , And obtains electric power for driving itself.

According to a fourteenth aspect of the present invention, in the information recording medium according to the twelfth aspect, when the communication means receives a polling signal transmitted intermittently by the wristwatch-type information device, the communication means responds accordingly. A response signal is transmitted to the device.

According to a fifteenth aspect of the present invention, in a communication system for providing a service to a user, an information recording medium storing data necessary for receiving the service, an external device for providing the service, First communication means for communicating with an external device, mounting means for detachably mounting the information recording medium, second communication means for communicating with the information recording medium mounted by the mounting means,
A wristwatch-type information device comprising: a control unit that relays data exchange performed between the external device and the information recording medium by controlling the first communication unit and the second communication unit. It is characterized by having.

According to a sixteenth aspect of the present invention, in the communication system according to the fifteenth aspect, the first type of the wristwatch-type information device is provided.
When receiving the polling signal intermittently transmitted by the external device, the communication unit transmits a response signal to the external device in response thereto, and the external device receives the transmitted response signal. In response to this, a process for providing a service to the wristwatch-type information device is started.

According to a seventeenth aspect of the present invention, in the communication system according to the fifteenth aspect, the mounting means for the wristwatch-type information device is provided on a back cover of the device.

In the communication system according to the present invention, the information recording medium may be supplied with power from a power supply device provided in the wristwatch-type information device, so that the information-recording medium may be connected to the wristwatch-type information device. The communication with the second communication means is performed.

According to a nineteenth aspect of the present invention, in the communication system according to the fifteenth aspect, the information recording medium includes communication means for performing wireless communication, and the second communication means performs communication of the information recording medium. It is characterized by performing wireless communication with the means.

According to a twentieth aspect of the present invention, in the communication system according to the nineteenth aspect, the information recording medium includes a rectifier for rectifying a radio signal received from the wristwatch-type information device, and the rectifier provides a radio signal. Is obtained by rectifying power for driving itself.

According to a twenty-first aspect, in the communication system according to the nineteenth aspect, the first type of the wristwatch-type information device is provided.
When receiving the polling signal intermittently transmitted by the external device, the communication means transmits a response signal to the external device in response to the polling signal, starts communication with the external device, and starts the watch-type information. The second communication means of the device transmits a data transmission request command signal when communication with the external device is started, and a response transmitted from the information recording medium in response to the data transmission request command signal. Receiving a signal.

A communication control method for a wristwatch-type information device for performing communication, wherein the first authentication step for verifying the validity of an external device for providing a service, and the wristwatch-type information device A second authentication step for detachably attaching the information recording medium storing data necessary for receiving the service, the first authentication step, and the second authentication step And relaying data exchange performed between the external device and the information recording medium after the validity of the data is confirmed.

[0027] According to a twenty-third aspect of the present invention, in the communication control method for a wristwatch-type information device according to the twenty-second aspect, the first control method comprises:
The authentication step includes: receiving a polling signal intermittently transmitted by the external device; transmitting a response signal to the external device that has transmitted the polling signal; and responding to the external device in response to the response signal. And determining the validity of the external device based on information transmitted from the external device.

According to a twenty-fourth aspect of the present invention, in the communication control method for a wristwatch-type information device according to the twenty-second aspect, the second control method is provided.
The authentication step is a step of intermittently transmitting a polling signal, and a step of receiving a response signal transmitted from the information recording medium that has received the polling signal,
Determining the validity of the information recording medium based on information transmitted from the information recording medium.

[0029]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings. A: First Embodiment First, a first embodiment of the present invention will be described. [1] Configuration [1.1] Overall Configuration of System FIG. 1 is a block diagram showing the overall configuration of the system according to the first embodiment. As shown in FIG. 1, this system includes a wristwatch-type information device 1 that a user wears on his / her wrist to use.
00 and an external transmitting / receiving apparatus 200 and related equipment 300 installed in a service providing area by a service provider.

An IC card (referred to as a memory card 400 in this embodiment) can be detachably mounted on the wristwatch-type information device 100. The memory card 400 stores various data, such as electronic money, necessary for the user to receive a service. The wristwatch-type information device 100 reads data stored in the memory card 400 and transmits the data to the external transmission / reception device 200 or transmits data from the external transmission / reception device 200 while performing data communication by short-range wireless communication with the external transmission / reception device 200. And a function of storing the stored data in the memory card 400. FIG.
Shows only one memory card 400,
Actually, there are a plurality of memory cards 400 according to the type of service provider. That is, each of the memory cards 400 stores data necessary for receiving a service provided by a corresponding service provider, and when a user wants to receive a specific service, the user can select a memory card corresponding to the service. 400 may be attached to wristwatch-type information device 100 for use.

The external transmission / reception device 200 performs data communication with the wristwatch-type information device 100 by short-range wireless communication to exchange data related to the service with the device 100, and performs data communication with the related equipment 300. To provide services to users. For example, when the service provider is a railway company, the external transmission / reception device 200 is built in a ticket gate, performs data communication with the wristwatch-type information device 100, and performs a process of deducting a fare from electronic money in the memory card 400. Do. As shown in FIG. 1, an external transmission / reception device 200 includes a control device 201 that controls the entire device 200.
A transmission circuit 202 that generates and outputs a transmission signal under the control of the control device 201; and a control circuit 2 that demodulates a reception signal transmitted from the wristwatch-type information device 100 and receives the demodulated signal as reception data.
1 and a high-frequency circuit 204 for transmitting and receiving signals to and from the wristwatch-type information device 100 via an antenna 205. here,
The transmission circuit 202 has a carrier frequency of 13.56 M, for example.
Hz transmission signal. This frequency is a frequency suitable for short-distance communication of about several centimeters. Therefore, when the user approaches his / her wristwatch-type information device 100 within several centimeters of the antenna 205 of the external transmission / reception device 200, the external transmission / reception device Data communication is performed between 200 and the wristwatch-type information device 100.

The related equipment 300 is composed of various devices and computer devices necessary for providing a service to a user. For example, when the service company is a railway company, the related facilities 300 correspond to a gate opening / closing device, a calculating device for calculating a fare to be paid by the user, and the like.

As described above, the memory card 400 stores data necessary for the user to receive the service provided by the related equipment 300. The wristwatch-type information device 100 includes the external transmitting / receiving device 200 and the memory card. It functions as a relay device that relays transmission and reception of data required for service provision with the H.400. Therefore, if the user holds one wristwatch-type information device 100, various services can be received only by appropriately exchanging a plurality of memory cards 400.

[1.2] Configuration of wristwatch-type information device 100 and memory card 400
The configuration will be described in detail. [1.2.1] External configuration of wristwatch-type information device 100 and memory card 400 FIG. 2 shows the device 100 when viewed from the back side of the wristwatch-type information device 100 (that is, the contact surface with the user's arm). FIG. As shown in the figure, a memory card 400 is attached to the back cover 101 of the wristwatch-type information device 100.
Is provided with a card slot 102 for accommodating therein. The reason why the card slot 102 is provided in the back cover 101 is that the design of the wristwatch-type information device 100 is not impaired. In the memory card 400,
A connection electrode (not shown) is provided. On the other hand, inside the card slot 102, the memory card 400 is inserted in a state where the card 400 is inserted into the card slot 102.
A connection electrode (not shown) is provided at a position in contact with the connection electrode on the side. The wristwatch-type information device 100 is connected to the memory card 40 via the connection electrodes that are in contact with each other.
0, and perform data communication with the card 400.

[1.2.2] Internal structure of wristwatch-type information device 100 FIG. 3 shows wristwatch-type information device 100 with memory card 400 inserted into card slot 102, as indicated by arrow AA 'shown in FIG. It is sectional drawing seen from. FIG. 4 is a plan view of the circuit board 103 and the liquid crystal panel 105 incorporated in the wristwatch-type information device 100 as viewed from the front side of the device 100. As shown in FIG.
Is configured to include a circuit board 103 in a housing formed by a cover glass 1, a casing 2, and a back cover 101. An IC chip 104 and an antenna 106 that perform various control processes are provided on the circuit board 103. Since the antenna gain of the antenna 106 increases as the opening area increases, as shown in FIG. 4, a copper foil pattern is formed in a region along the outer periphery of the substantially disk-shaped circuit board 103 so as to form a two-turn loop. It is formed with. Further, in consideration of the antenna gain of the antenna 106, the casing 2 and the back cover 101 are desirably formed of an insulating material such as plastic or ceramic. A liquid crystal panel 105 is provided at a position separated from above the IC chip 104. This liquid crystal panel 105
Displays information related to the service, in addition to the time information. On the back side of the circuit board 103, a tuning capacitor 107 for tuning to a carrier frequency of 13.56 MHz, a crystal oscillator 108 for generating a source oscillation signal having a reference frequency, and a wristwatch-type information device 100 And a battery 109 for supplying power to each of the components.

[1.2.3] Electrical configuration of wristwatch-type information device 100 and memory card 400 FIG.
FIG. 2 is a block diagram illustrating an outline of an electrical configuration of the first embodiment. First,
The electrical configuration of the wristwatch-type information device 100 will be described. The wristwatch information device 100 is roughly composed of an RF unit 110 for performing wireless communication with the above-described external transmitting / receiving device 200, a card control circuit 120 for controlling the memory card 400, and a clock unit 130 for controlling a clock function.

The RF unit 110 performs ASK demodulation on the received signal input via the antenna 106 and outputs the received signal as ASK demodulation unit 111, and ASK demodulation on the transmission data input from the card control circuit 120. And an ASK demodulation circuit 112 that generates a transmission control signal by generating a transmission control signal based on the generated transmission control signal.
A carrier detector 113 detects whether or not a carrier is included in a received signal input via the antenna 106 and outputs a carrier detection signal CRDET when the carrier is included.

The card control circuit 120 includes a CPU (not shown)
(Central Processing Unit) and various memories, and an encryption processing circuit 121 for performing encryption processing. This encryption processing circuit 121 is, for example, a DES (Data Encryption
Standard) and RSA (RLRiverst A Shamir L. Adel)
man), etc., and has a function of decrypting encrypted received data and encrypting unencrypted data. The card control circuit 120 controls the encryption processing circuit 1
External transmission / reception device 2 using the encryption / decryption function of
00 and encrypted data communication is performed. As a result, security is maintained without leaking information about the privacy of the user to a third party.

The clock unit 130 includes a CPU and various memories, and controls a clock control circuit 131 for controlling the entire clock unit 130.
A reference signal generating circuit 132 for generating and outputting a clock signal based on the oscillation frequency of the externally connected crystal unit 108; a display driving circuit 134 for driving a display unit 133 such as the liquid crystal panel 105; (Light Emitt
A light emitting drive circuit 136 that includes a light emitting element such as a light emitting element and drives a light emitting unit 135 for notifying the user of various states by light, and for notifying the user of various information by sounding a buzzer or an electronic sound. And a sound drive circuit 138 for driving the sounding section 137 of FIG. The clock signal created by the reference signal creation circuit 132 is supplied to the memory card 400 via the connection electrode on the wristwatch-type information device 100 and the connection electrode on the memory card 400. I have.

In addition, the wristwatch-type information device 100 includes the battery 109 for supplying power to each unit as described above, the button and the touch panel, and has the external operation input unit 140 for the user to perform various operations. are doing. When the external operation input unit 140 receives an input operation by a user, the external operation input unit 140 generates an output signal corresponding to the operation and inputs the output signal to the clock unit 131.

Next, the memory card 400 will be described. The memory card 400 has an insulating synthetic resin substrate
A C chip (not shown) is embedded and formed. This I
The C chip has an EEPROM (Electrically Erasable
and a non-volatile memory 401 such as a programmable ROM) and a flash memory. This nonvolatile memory 401 has an ICCID (IC Card Identificatio) obligated to be given to each IC card.
n), an ID storage unit 402 for storing a service provider ID for identifying each service provider, and a money information storage unit 403 for storing electronic money information used as a price for the service. Storage areas are provided. As described above, the power for driving the memory card 400 is supplied to the memory card 400 via the connection electrode on the wristwatch-type information device 100 and the connection electrode on the memory card 400. Has become.

Next, referring to the circuit diagram shown in FIG.
The configuration of the carrier detection unit 113 will be described in detail. As shown in FIG.
An operational amplifier 114 that amplifies a reception signal input via the coil L and the tuning capacitor 107 constituting the antenna 106 and outputs the amplified reception signal as an amplified reception signal, and a diode detection that performs diode detection of the amplified reception signal and outputs a detection signal SD. Unit 115, a discharging resistor R for discharging the charge stored in the diode detection unit 115 during diode detection, and a buffer unit 116 for buffering an output signal of the diode detection unit 115 and outputting a carrier detection signal CRDET. And Diode detector 1
Reference numeral 15 denotes a diode D having an anode connected to the output terminal of the operational amplifier 114, and one terminal connected to the cathode terminal of the diode D and the other terminal connected to the low potential side power supply GND.
And a capacitor C connected to the The buffer unit 116 has a cathode connected to the input terminal of the diode D, and inverts the detection signal SD and outputs the inverted signal as an inverted detection signal / SD.
An output terminal of the OT1 is connected to the input terminal, and a second NOT circuit NOT2 that inverts the input inverted detection signal / SD and outputs the inverted signal as a carrier detection signal CRDET.

Next, referring to the explanatory diagram shown in FIG.
The operation of the carrier detector 11 will be described. Coil L and tuning capacitor 10 constituting antenna 106
For example, when the carrier frequency is 13.56 MHz, the received signal input via the interface 7 is as shown in FIG. 7A. Here, when detection is performed by the diode detection unit 115, a detection signal SD having a waveform substantially equal to the envelope of the carrier signal as shown in FIG. 7B is output to the buffer unit 116. The buffer unit 116 effectively shapes the waveform of the detection signal SD, generates a carrier detection signal CRDET as shown in FIG. 7C, and outputs this.

[2] Operation Next, the operation of the first embodiment having the above configuration will be described. Hereinafter, the operation will be described in the order of (1) processing when the memory card 400 is inserted, and (2) operation example of the entire system. [2.1] Processing when the memory card 400 is inserted FIG. Time card control circuit 1
20 is a flowchart showing the operation of the embodiment 20. When the user inserts the memory card 400 into the card slot 102 of the wristwatch-type information device 100, the flow shown in FIG. Here, the memory card 40
In order to detect that 0 has been inserted, for example, it may be detected that the connection electrode on the wristwatch-type information device 100 and the connection electrode on the memory card 400 are in contact with each other by electrical means. A switching mechanism that is turned on when the memory card 400 is inserted into the card slot 102 may be provided.

First, the card control circuit 120 performs mutual authentication with the IC chip of the memory card 400 according to a predetermined procedure (step Sa1). The mutual authentication is performed by, for example, exchanging IDs of each other and confirming their validity.

As a result of the mutual authentication, when the mutual validity is recognized (Step Sa2; Yes). The card control circuit 120 transmits to the memory card 400 a data transmission request command for requesting transmission of the data stored in the memory card 400 to itself (step Sa).
3).

On the other hand, when the IC chip of the memory card 400 receives the data transmission request command, it reads out the data stored in its own non-volatile memory 401 in response to the data transmission request command, and transfers the read out data to the card control circuit 120.
Send to On the other hand, the card control circuit 120 receives the data transmitted from the memory card 400 (Step Sa4).

Next, the card control circuit 120 determines whether or not the data has been correctly received in step Sa4 (step Sa5). Here, when it is confirmed that the data is received correctly (step Sa5; Yes), the card control circuit 120 transmits the received data to the display drive circuit 13
4 (step Sa).
6). On the other hand, if it is determined that the data has not been correctly received (step Sa5; No), the processing of the card control circuit 120 returns to step Sa3, and transmits the data transmission request command again.

If the mutual authentication is not recognized as a result of the mutual authentication in step Sa2 (step S2).
a2; No), the card control circuit 120 causes the display unit 133 to display an error message indicating that authentication is not possible (step Sa7).

Once mutual authentication has been performed between wristwatch-type information device 100 and memory card 400 in this manner, memory card 400 is then inserted into card slot 10.
Until it is extracted from 2, the two-way data communication can be performed without performing mutual authentication each time. For example, once the mutual authentication has been performed, if the user performs an operation to instruct data reading, or if a signal instructing data reading or writing is sent from the external transmitting / receiving device 200, the mutual authentication is performed again. The data reading or writing process is performed without performing the above.

[2.2] Example of Operation of Entire System Next, an example of operation of the entire system will be described with reference to the sequence shown in FIG. Here, it is assumed that mutual authentication has already been performed between wristwatch-type information device 100 and memory card 400.

In FIG. 5, the external transmitting / receiving apparatus 200 periodically transmits a polling signal (step Sb).
1). The wristwatch-type information device 100 includes an external transmitting / receiving device 20.
When it comes to a position close to the 0 antenna 205, it receives the polling signal, and the carrier detection circuit 113 detects a carrier from the signal. Wristwatch type information device 10
0 transmits a response signal to the external transmitting / receiving apparatus 200 in response to the carrier detection (step Sb2).

Using the response signal in step Sb2 as a trigger, the external transmission / reception device 200 and the wristwatch-type information device 100 perform mutual authentication in a predetermined procedure such as checking each other's ID (steps Sb3 to Sb4). ).

When the mutual validity is confirmed by the mutual authentication, the external transmitting / receiving apparatus 200 sets the memory card 40
0 transmits a data transmission request signal for requesting transmission of the data stored therein to the wristwatch-type information device 100 (step Sb5). This data transmission request signal is encrypted and transmitted to the wristwatch-type information device 100.

When receiving the data transmission request signal, the wristwatch-type information device 100 decrypts the data transmission request signal by the encryption processing circuit 121. Next, the wristwatch-type information device 100 performs the above-described step S of FIG. 8 based on the decrypted content.
A data transmission request command is generated similarly to a3, and transmitted to the memory card 400 (step Sb6).

The memory card 400 reads data from the nonvolatile memory 401 in response to the received data transmission request command, and stores the read data in the wristwatch-type information device 1.
00 (step Sb7). Here, the transmitted data includes the ICCID, the service provider ID, and the electronic money information stored in the nonvolatile memory 401 of the memory card.

When receiving the data transmitted from the memory card 400, the wristwatch-type information device 100 encrypts the data by the encryption processing circuit 121 and transfers it to the external transmitting / receiving device 200 (step Sb8).

The external transmission / reception device 200 decodes the received data and determines whether or not to provide a service based on the decoded content. This determination process is performed, for example, to determine whether the user has electronic money information sufficient to pass the ticket gate, whether the received ICCID is valid, and whether the received service provider ID manages the external transmitting / receiving device 200. The process is such as to determine whether or not the ID matches the ID of the service provider.

When it is determined that the service can be provided,
The external transmission / reception device 200 generates write data to be newly stored in the memory card 400, transmits the write data to the wristwatch-type information device 100 while including the data in a data write request signal for requesting writing to the nonvolatile memory 401. (Step Sb9). Here, the write data is, for example, electronic money information corresponding to the remaining amount obtained by subtracting the fare to be paid when passing the ticket gate from the electronic money information received from the memory card 400. This data transmission request signal is also encrypted and transmitted to the wristwatch-type information device 100 as in step Sb5.

The wristwatch-type information device 100 decodes the received data write request signal, generates a data write request command based on the signal, and transmits this to the memory card 400 together with the write data (step Sb10). ).

Receiving the data write request command, memory card 400 overwrites the write data in nonvolatile memory 401 in response to the command. And memory card 4
When the overwriting process is completed, 00 transmits a completion notification signal to the wristwatch-type information device 100 (step Sb11).

When the wristwatch-type information device 100 receives the completion notification signal transmitted from the memory card 400,
This is transferred to the external transmitting / receiving device 200 (step Sb
12).

The external transmission / reception device 200 performs a process for providing a service based on the received completion notification signal.
For example, the external transmitting / receiving device 200 instructs the ticket gate to open the gate so that the user can pass through the ticket gate.

As described above, according to the first embodiment, the memory card 400 storing the data necessary for receiving the service is detachably attached to the wristwatch-type information device 100, and the memory card 400 By providing the configuration for performing communication, the user can use one wristwatch-type information device 1
00, the plurality of memory cards 40
Various services can be received simply by replacing 0 as appropriate.

Also, the card slot 102 is
Is provided, the memory card 400 can be mounted on the wristwatch-type information device 100 without deteriorating the design of the wristwatch-type information device 100. The IC chip of the memory card 400 is used for the wristwatch-type information device 10.
Since the operation is performed by stable power supply from the 0-side battery 109, reliability is maintained.

B: Second Embodiment Next, a second embodiment of the present invention will be described. [1] Configuration FIG. 10 is a block diagram showing an electrical configuration of a wristwatch-type information device 100A and a memory card 400A of the second embodiment. In the figure, the same components as those of the first embodiment shown in FIG. 5 are denoted by the same reference numerals, and detailed description thereof will be omitted. In FIG. 10, the point that the memory card 400A is a non-contact type IC card that performs wireless data communication,
This is different from the first embodiment of FIG. Therefore, a configuration for performing wireless data communication between the wristwatch-type information device 100A and the memory card 400A via the connection electrode is employed instead of the configuration for performing data communication.

More specifically, the memory card 400A
An IC card control circuit 410 including a PU, a ROM, and a RAM and including an encryption processing circuit 411; an antenna 420 for receiving a wireless signal transmitted from the wristwatch-type information device 100; ASK demodulates the received signal and outputs it as received data
An SK demodulation section 430, an ASK modulation circuit 440 that performs ASK modulation on transmission data input from the IC card control circuit 410 to generate a transmission signal, and a clock signal from a reception signal input via the antenna 420 A clock generation circuit 450 for generating and outputting
And a power supply circuit 460 that rectifies a received signal input through the memory card to generate driving power and supplies the driving power to each unit of the memory card 400A. Note that the external transmitting / receiving device 2
00 and the wireless signal used between the wristwatch-type information device 100A and the wristwatch-type information device 100A and the memory card 4
In order to prevent interference with a radio signal used between 00A, the transmitting device of the radio signal includes, in the header of each radio signal,
An ID for identifying the destination device is written.

[2] Operation Next, the operation of the second embodiment having the above configuration will be described. FIG. 11 is a sequence showing the operation of the entire system, which is executed between the above-described external transmitting / receiving device 200, the wristwatch-type information device 100A, and the memory card 400A. In the figure, steps common to those in the first embodiment shown in FIG. 9 are denoted by the same reference numerals. 11 differs from the first embodiment in FIG. 9 in that after mutual authentication between the wristwatch-type information device 100A and the external transmission / reception device 200 is completed, the wristwatch-type information device 100A transmits data to the memory card 400A. Is performed for requesting that the memory card 400A be transmitted, and the mutual authentication is performed with the memory card 400A that returns a response signal in response to the polling (steps Sd1 to Sd5 shown in the figure). That is, the wristwatch-type information device 100A and the memory card 4
Since 00A performs data communication without contact, prior mutual authentication is essential every time a session is performed. The processes other than steps Sd1 to Sd5 are the same as those in FIG. 9 described above, except that the communication between the wristwatch-type information device 100A and the memory card 400A is wireless, and thus the description is omitted.

As described above, according to the second embodiment, the burden of operating the memory card 400A on the battery 109 of the wristwatch-type information device 100A can be reduced.

Further, since the connection electrode as in the first embodiment need not be provided in the memory card 400A or the card slot 102 of the wristwatch-type information device 100A, there is no possibility that the contact portion is deteriorated, and the reliability is improved. There is a merit that is improved.

C: Modification of Embodiment As described above, the present invention is not limited to the above-described embodiment.
The following various changes are possible. [1] Carrier Frequency In the first and second embodiments, the wristwatch-type information device communicates using radio waves having a carrier frequency of 13.56 MHz. However, the carrier frequency is not limited to this, and may be, for example, 125 kHz, 134 kHz, or 2.4.
A frequency such as 5 GHz may be used. In the case of 125 kHz or 134 kHz, several tens of turns of the antenna 106 are required. Therefore, the antenna 106 may be formed by winding a copper wire instead of the copper foil pattern. Also, 2.45G
In the case of Hz, the microstrip antenna may be provided on the circuit board 103.

In the second embodiment, the ID of the destination device is used in order to prevent radio signal interference. However, the present invention is not limited to this configuration. And a wristwatch-type information device 10
A different carrier frequency may be used between 0 and the memory card 400. In this case, the wristwatch-type information device 100
Needs to include a frequency synthesizer or the like for performing frequency switching.

[2] Structure of Wristwatch-Type Information Device 100 In the first and second embodiments, the wristwatch-type information device 10
The internal structure of 0 is not limited to that shown in FIG. For example, the configuration shown in the sectional view of FIG.
The difference between the configuration shown in FIG. 12 and FIG.
One side has more functions. Specifically, a circuit board B is provided inside the back cover 101, and the antenna 106 is formed on the circuit board B. In this way, even if the carrier frequency differs depending on the service provider or the size or specification of the memory card 400 differs, it is possible to deal with this difference only by replacing the back cover 101 alone.

The number of card slots 102 provided in the wristwatch-type information device 100 is not limited to one, but may be two.
There may be more than one. In this way, the service can be received by the number of the installed memory cards 400 without having to replace the memory card 400.

[0075]

According to the present invention, a wristwatch-type information device comprises:
First communication means for performing data communication with an external device for providing a service, mounting means for removably mounting a memory card for storing data necessary for receiving the service, and a mounted memory card Communication means for performing data communication with the memory card, and control means for relaying data exchange between the external device and the memory card by controlling the first communication means and the second communication means. Therefore, the user can receive various services by simply replacing a plurality of memory cards with one wristwatch-type information device as appropriate.

[Brief description of the drawings]

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

FIG. 2 is a perspective view showing the external appearance of the wristwatch-type information device according to the first embodiment as viewed from the back side.

FIG. 3 is a sectional view showing an internal structure of the wristwatch-type information device according to the first embodiment.

FIG. 4 is a plan view illustrating a structure of a circuit board portion of the wristwatch-type information device according to the first embodiment.

FIG. 5 is a block diagram showing an electrical configuration of the wristwatch-type information device according to the first embodiment.

FIG. 6 is a circuit diagram illustrating a carrier detection unit of the wristwatch-type information device according to the first embodiment.

FIG. 7 is an explanatory diagram illustrating an operation of the carrier detection unit according to the first embodiment.

FIG. 8 is a flowchart illustrating an operation of a card control circuit of the wristwatch-type information device according to the first embodiment.

FIG. 9 is a sequence showing an operation of the entire system according to the first embodiment.

FIG. 10 is a block diagram showing an electrical configuration of a wristwatch-type information device according to a second embodiment of the present invention.

FIG. 11 is a sequence showing an operation of the entire system according to the second embodiment.

FIG. 12 is a sectional view showing the internal structure of a wristwatch-type information device according to a modification.

[Explanation of symbols]

100: wristwatch type information device, 101: back cover, 1
02: card slot (mounting means), 103:
Circuit board, 104 ... IC chip (control means), 10
5 ... liquid crystal panel, 106 ... antenna, 107
..Tuning capacitors, 108, quartz oscillators, 109
... Battery, 110 ... RF unit (first communication means, second communication means) 111 ... ASK demodulation circuit, 112 ... ASK modulation circuit, 113 ... Carrier detection circuit, 120 .. a card control circuit (second communication means), 121 ... an encryption processing circuit, 130 ... a clock section, 131 ... a clock control circuit, 132 ... a reference signal creation circuit, 133 ... Display unit, 134, display drive circuit, 135 ... light-emitting unit, 1
36 ... light emission drive circuit, 137 ... sound section, 138
... Sound drive circuit, 140 ... External operation input unit, 2
00: external transmission / reception device (external device), 201:
Control device, 202: transmission circuit, 203: reception circuit, 204: high frequency circuit, 205: antenna,
300: related equipment (external device), 400: memory card (information recording medium), 401: nonvolatile memory, 402: ID storage unit, 403: money information storage unit, 410 ..Card control circuits (control means), 4
11: encryption processing circuit, 420: antenna (communication means), 430: ASK demodulation circuit (communication means), 4
40 ... ASK modulation circuit (communication means), 450 ...
Clock generation circuit (communication means), 460... Power supply circuit (rectification means).

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) G06K 19/00 G06F 1/00 312W H04B 7/26 G06K 19/00 H // G04G 1/00 317 Q H04B 7/26 MF term (reference) 2F002 AA05 AB06 AC02 AC03 AD06 AD07 AE00 AE01 BA09 BB03 BB04 EA01 EA02 EB01 EC01 EC02 ED02 EE08 GA06 GA14 5B035 BA01 BB09 BC00 CA23 5B058 CA15 CA23 KA02 KA04 KA04 KA04 KA04 KA01 HH23 KK15

Claims (24)

[Claims] 1. A first communication means for communicating with an external device for providing a service, and a mounting means for detachably mounting an information recording medium storing data necessary for receiving the service. A second communication unit that communicates with the information recording medium mounted by the mounting unit; and controlling the first communication unit and the second communication unit to control the external device and the information recording medium. And a control means for relaying data exchange between the two. 2. The wristwatch-type information device according to claim 1, wherein the first communication means responds to the external device in response to receiving a polling signal transmitted intermittently by the external device. A wristwatch-type information device for transmitting a signal. 3. A wristwatch-type information device according to claim 1, wherein said mounting means is provided on a back cover of said device. 4. The wristwatch-type information device according to claim 1, further comprising a power supply unit that supplies power to the information recording medium, whereby the information recording medium is a second device of the wristwatch-type information device. A wristwatch-type information device that performs communication with communication means. 5. The wristwatch-type information device according to claim 1, wherein the second communication unit wirelessly communicates with the information recording medium. 6. The wristwatch-type information device according to claim 5, wherein the second communication means transmits a data transmission request command signal, and is transmitted from the information recording medium in response to the data transmission request command signal. A wristwatch-type information device characterized by receiving an incoming response signal. 7. The wristwatch-type information device according to claim 1, wherein the first communication unit receives a polling signal transmitted intermittently within a wireless communication area of the external device, and in response to the polling signal, receives the polling signal. After transmitting a response signal to the external device to start communication with the external device, the second communication means, after the communication between the first communication means and the external device is started, A wristwatch-type information device which transmits a data transmission request command signal and receives a response signal transmitted from the information recording medium in response to the data transmission request command signal. 8. The wristwatch-type information device according to claim 1, further comprising a first authentication unit that checks the validity of the external device using the first communication unit. . 9. The wristwatch-type information device according to claim 1, further comprising a second authentication unit that checks the validity of the information recording medium using the second communication unit. machine. 10. A storage means which is detachably attachable to a wristwatch-type information device and stores data necessary for receiving a service, a communication means for communicating with the wristwatch-type information device, Control means for writing data to the recording means and reading data stored in the recording means in response to a request transmitted from the wristwatch-type information device via the communication means. Information recording medium. 11. The information recording medium according to claim 10, wherein the information recording medium communicates with the wristwatch-type information device by receiving power supply from a power supply device included in the wristwatch-type information device. Information recording medium. 12. The information recording medium according to claim 10, wherein said communication means communicates with said wristwatch-type information device wirelessly. 13. The information recording medium according to claim 12, further comprising: a rectifier for rectifying a wireless signal received from the wristwatch-type information device, wherein the rectifier rectifies the wireless signal,
An information recording medium characterized by obtaining electric power for driving itself. 14. The information recording medium according to claim 12, wherein said communication means, upon receiving a polling signal transmitted intermittently by said wristwatch-type information device, transmits a response signal to said device in response to the polling signal. An information recording medium characterized in that: 15. A communication system for providing a service to a user, comprising: an information recording medium storing data necessary for receiving the service; an external device for providing the service; and communicating with the external device. A first communication unit; a mounting unit for detachably mounting the information recording medium; a second communication unit for communicating with the information recording medium mounted by the mounting unit; Control means for relaying data exchange performed between the external device and the information recording medium by controlling a second communication means;
A communication system comprising: a wristwatch-type information device including: 16. The communication system according to claim 15, wherein the first communication unit of the wristwatch-type information device receives a polling signal transmitted intermittently by the external device, and responds to the polling signal. A communication device for transmitting a response signal to the device, wherein the external device, upon receiving the transmitted response signal, starts a process for providing a service to the wristwatch-type information device in response thereto. system. 17. The communication system according to claim 15, wherein said wristwatch-type information device mounting means is provided on a back cover of said device. 18. The communication system according to claim 15, wherein the information recording medium communicates with a second communication unit of the wristwatch-type information device by receiving power supply from a power supply device included in the wristwatch-type information device. A communication system characterized by performing: 19. The communication system according to claim 15, wherein the information recording medium includes communication means for performing wireless communication, and the second communication means wirelessly communicates with the communication means of the information recording medium. A communication system characterized by performing. 20. The communication system according to claim 19, wherein the information recording medium includes a rectifier for rectifying a radio signal received from the wristwatch-type information device, and rectifying the radio signal by the rectifier. A communication system characterized by obtaining electric power for driving itself. 21. The communication system according to claim 19, wherein the first communication unit of the wristwatch-type information device receives a polling signal transmitted intermittently by the external device, and in response thereto, responds to the polling signal. The second communication unit of the wristwatch-type information device transmits a data transmission request command signal when communication with the external device is started, by transmitting a response signal to the device and starting communication with the external device. And a response signal transmitted from the information recording medium in response to the data transmission request command signal. 22. A communication control method for a wristwatch-type information device for performing communication, comprising: a first authentication step for confirming the validity of an external device for providing a service; A second authentication step of checking the validity of an information recording medium storing data necessary for receiving the service, and a first authentication step and a second authentication step of verifying the validity. And a relay step of relaying data exchange between the external device and the information recording medium after the communication. 23. The communication control method for a wristwatch-type information device according to claim 22, wherein the first authentication step includes: receiving a polling signal transmitted intermittently by the external device; Transmitting a response signal to the transmitting external device; and determining the validity of the external device based on information transmitted from the external device in response to the response signal. A communication control method for a wristwatch-type information device. 24. The communication control method for a wristwatch-type information device according to claim 22, wherein the second authentication step includes: intermittently transmitting a polling signal; and transmitting from the information recording medium that has received the polling signal. Receiving the received response signal, and determining the validity of the information recording medium based on the information transmitted from the information recording medium. Method.