JPH10105658A - Ic card provided with programmable arithmetic means and applying method for the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To construct a system having high extendability to the change of algorithm by performing arithmetic processing to data to be operated based on the arithmetic algorithm, transmitting these arithmetic result data to the outside and controlling the communication route of program data, data to be operated and arithmetic result data. SOLUTION: External equipment 16 transmits program data describing the arithmetic algorithm to an input/output control part 2. The input/output control part 2 identifies these data and transmits the program data to a reception part 3 while sing a bus 10. The program data received at the reception part 3 are temporarily stored in a program data storage memory 7, these stored program data are extracted by an arithmetic part 5 and the data to be operated stored in a data-to-be-operated storage memory 8 are fetched and arithmetically processed based on the arithmetic algorithm. The arithmetic result is transmitted to the external equipment 16 by a transmission part 6. Besides, the input/output control part 2 controls the switching of the communication route corresponding to the kind of received data.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an IC card and an IC.
It relates to a method using a card.

[0002]

2. Description of the Related Art Conventionally, when an IC card is used as a data storage medium and the amount of data to be processed is large, such as image data, a data compression process is performed on the writing device side when storing data in the IC card. When the data is read from the IC card, the data expansion process is performed on the reading device side. By storing the data thus compressed in the memory in the IC card, the memory capacity in the IC card has been used efficiently. Alternatively, when the data to be processed is highly confidential, the writing device performs data encoding when storing the data in the IC card, and performs the data decoding process when reading the data from the IC card. And processed data efficiently.

[0003] When an IC card is used as an electronic key, for example, when it is used as a descrambling method, the descrambling means on the receiving device side decrypts the electronic key information of the IC card and is an authorized subscriber. It has been determined whether or not the scramble has been released.

[0004]

In the case where a conventional IC card is used as a data storage medium, a data compression circuit or a decoding circuit is used on the writing device side in order to perform data compression or decoding processing. A circuit for chemical treatment was required. In addition, on the reading device side, a circuit for data decompression processing or a circuit for decoding processing is necessary to perform data decompression processing or decoding processing. Further, when an IC card is used as a descrambling method, a circuit for descrambling processing is required on the receiving device side to descramble.

[0005] Algorithms for performing these processes sometimes change due to technological progress or the like, and every time the algorithm for processing is changed, it is necessary to change the writing device or the reading device. In particular, data compression and decompression requires consistency between the compression and decompression algorithms, and data encoding and decoding requires consistency between the encoding and decoding algorithms. It is. Therefore, it is necessary to change both the writing device and the reading device. As described above, the conventional method using an IC card is inflexible, uneconomical, and irrational with respect to algorithm changes.

SUMMARY OF THE INVENTION An object of the present invention is to provide an IC card capable of constructing an economical system with a highly scalable system for changing an algorithm, and an application method thereof, with the object of solving the above problems.

[0007]

The IC card according to the present invention comprises:
Program data receiving means for receiving program data downloaded from the outside, processing data receiving means for receiving processing data input from the outside, receiving the program data from the program data receiving means, and receiving the processing data Operating means for performing an arithmetic process on the operated data transmitted from the CPU based on an arithmetic algorithm described in the program data, an arithmetic result data transmitting means for transmitting the arithmetic result data of the arithmetic means to the outside, and the program data And input / output control means for controlling a communication path between the operated data and the operation result data.

In this IC card, program data downloaded from the outside is received, and arithmetic processing of the data to be operated is executed by arithmetic means of the IC card based on an arithmetic algorithm described in the program data. For this reason, it is possible to cope with a change in the operation algorithm by downloading program data newly describing the operation algorithm to the IC card. In this IC card, the input / output control means controls the communication paths of various data. Therefore, there is no need to provide a communication path dedicated to receiving various data, and it is not necessary to change the interface.

Further, the IC card according to the present invention has a memory for storing program data for storing downloaded program data, a memory for storing data to be processed to store received data to be processed, and an operation to store data of operation results. It has one or more memories for storing result data. In this IC card, data necessary for executing the arithmetic processing can be stored in various memories in advance. Therefore, the present invention can be used for a method using an IC card that needs to store program data, data to be operated on, and operation result data in advance.

Further, the arithmetic means can be realized by a DSP or a PLD.

[0011] A data capturing / reproducing method using an IC card according to the present invention, in a system including the IC card, an input device, and an output device, includes:
Fetching data in the input device, processing the fetched data to create operated data, transmitting the operated data from the input device to the operated data receiving means of the IC card, and storing the processed data in the IC card And downloading program data describing an operation algorithm for processing the data to be operated from the input device to the program data receiving means of the IC card, and storing the program data in the IC card. A step of generating operation result data by performing an operation process on the data to be operated based on the operation algorithm in an operation means of the IC card, and transmitting the operation result data from the operation result data transmission means of the IC card to the output device And the description in the operation result data. The information comprises the step of outputting to the output device.

In the data fetching / reproducing method using the IC card, data to be processed is created by processing the data fetched by the input device. Then, the input device transmits the operated data to the operated data receiving means of the IC card,
In addition, program data describing an operation algorithm for processing the data to be operated is downloaded to the program data receiving means of the IC card. The operation unit of the IC card executes the operation processing of the data to be operated based on the operation algorithm, and creates operation result data. Then, the calculation result data is transmitted from the calculation result data transmission means of the IC card to the external device. Therefore, the output device does not need a data processing function and the output device can be configured at a low cost, and it is not necessary to ensure consistency between the input device and the display device. In addition, even if the algorithm for calculating the acquired data using the input device is changed, it is possible to download the program data that describes the algorithm that can process the data calculated using the changed algorithm to a new IC card. it can.

An image capturing and reproducing method using an IC card according to the present invention is characterized in that in the data capturing and reproducing method,
The data taken in by the input device is image data, the operated data is data obtained by compressing the image data, and the program data downloaded to the IC card is program data describing an expansion algorithm. Also, in the audio capturing / reproducing method applying the IC card of the present invention, in the data capturing / reproducing method, the data captured by the input device is audio data, and the operated data is data obtained by compressing the audio data, The program data to be downloaded to the IC card is program data describing a decompression algorithm. Further, in the method for capturing and reproducing confidential information to which the IC card of the present invention is applied, in the method for capturing and reproducing data, the data captured by the input device is data representing confidential information, and the data to be operated is data representing the confidential information. And the program data downloaded to the IC card is program data describing a decoding algorithm.

In the above-mentioned reproducing method, since the arithmetic processing is performed by the IC card, even if the algorithm for calculating the fetched data by the input device is changed, an algorithm capable of performing arithmetic processing on the data calculated by the changed algorithm is used. This can be handled by newly downloading the described program data to an IC card. Also, the output device does not need an arithmetic processing function, and there is no need to ensure consistency between the input device and the output device.

An ID to which the IC card of the present invention is applied
In the authentication method, in a system including the IC card, the image input device, and the image output device, when a service contract is made,
Fetching image data such as a contractor's operation in the image input device, compressing the fetched image data to create operated data, receiving the operated data of the IC card from the image input device; Transmitting from the image input device to program data receiving means of the IC card, the program data describing a step of transmitting the data to the IC card and storing the data in the IC card and a decompression algorithm for decompressing the data to be operated;
Storing the data on a C card, and performing a decompression process on the data to be operated based on the decompression algorithm in the calculating means of the IC card when using a service, to generate calculation result data; Is transmitted from the calculation result data transmitting means of the IC card to the image output device, and the information described in the calculation result data is displayed on the image output device to confirm that the user is the contractor.

In the ID authentication method using the IC card, data representing the operation image of the contractor is stored in the IC card, and the data stored in the IC card is displayed on the image output device when the service is used. The provider checks whether it is the contractor. For this reason, erroneous recognition of ID authentication is reduced. Further, the arithmetic means of the IC card executes data expansion processing based on an expansion algorithm described in the program data. For this reason, the image display device does not need a data decompression function, and it is not necessary to ensure consistency between the image input device and the image display device.

Further, the descrambling method using an IC card according to the present invention is characterized in that, in a system including the IC card and a receiving device for receiving a scrambled digital video, when a reception service is subscribed or when a descrambling algorithm is changed, Downloading the program data describing the descrambling algorithm to the program data receiving means of the IC card, and storing the program data in the IC card, wherein the scrambled digital video received by the receiving device is received when the receiving service is provided. Is transmitted from the receiving device to the data-to-be-processed receiving means of the IC card, and the data-to-be-processed is descrambled by the means for calculating the IC card based on the descrambling algorithm. Having that step.

In the descrambling method using the IC card, the arithmetic means of the IC card descrambles the data to be operated based on the descrambling algorithm described in the program data. For this reason,
The descrambling function is not required for the receiving device, and the receiver can be configured at low cost. Also, a change in the method of performing scramble processing on digital video can be handled by newly downloading a descrambling algorithm corresponding to the changed method of performing scramble processing to the IC card. Therefore, it is not necessary to change the receiving apparatus even when the method of scrambling the digital video is changed. Furthermore, since the descrambling is performed by the IC card owned by the subscriber, it is possible to prevent a situation in which a person other than the subscriber does not descramble and view the image.

The information providing method using an IC card according to the present invention, in the system provided with the IC card and the information providing terminal, receives and stores data to be operated provided to the information providing terminal, Storing program data describing an arithmetic processing algorithm for processing the data to be operated in association with the data to be operated, and storing the data to be operated from the information providing terminal to the IC;
Transmitting the program data corresponding to the operation data to the card from the information providing terminal to the I
Downloading to a C card.

In the information providing method using the IC card, the information providing terminal stores the operation data representing the information to be provided and the program data describing the operation algorithm for performing the operation processing of the operation data in association with each other. I do.
At the time of providing information, the data to be processed and program data describing a calculation algorithm for performing the calculation processing of the data to be processed are transmitted to the IC card, and the data to be processed are processed by the IC card. For this reason, the reading device does not need a function of performing arithmetic processing on the data, and does not need to use a dedicated reading device even when reading information data having different attributes. Also, information data having a new attribute can be handled by storing program data describing an operation algorithm corresponding to the information data having the new attribute in the information providing terminal.

[0021]

[IC card]

<< Structure >> FIG. 1 shows a block diagram of an IC card. The IC card 1 includes an input / output control unit 2, a program data receiving unit 3, an operation data receiving unit 4, an operation unit 5, an operation result data transmission unit 6, a program data storage memory 7, an operation data storage memory 8, an operation result The configuration includes a data storage memory 9 and an external device 16. The input / output control unit 2 switches a communication path according to the type of data. The program data receiving section 3 is for receiving program data downloaded from the outside. The operation data receiving section 4 is for receiving the operation data. The operation unit 5 is for executing the operation of the operation target data based on the operation algorithm described by the program data, and is realized by the DSP in the present embodiment. The calculation result data transmission unit 6 is the calculation unit 5
This is for receiving the calculation result data calculated in and transmitting the data to the external device 16. The program data storage memory 7 stores program data, the operation data storage memory 8 stores operation data, and the operation result data storage memory 9 stores operation result data.

<< Operation >> In the following, I shown in FIG.
The operation of the C card 1 will be described. The external device 16 transmits program data describing an arithmetic algorithm to the input / output control unit 2. The input / output control unit 2 identifies the type of the transmitted data, switches the communication path, and transmits the program data to the program data receiving unit 3 using the bus 10. The program data received by the program data receiving unit 3 is temporarily stored in the program data storage memory 7. The arithmetic unit 5 retrieves the program data stored in the program data storage memory 7, and the arithmetic unit 5 is ready to execute the arithmetic algorithm described in the program data. Further, the external device 16 transmits the data to be processed to the input / output control unit 2. The input / output control unit 2 identifies the type of the transmitted data, switches the communication path, and
1 and is transmitted to the data-to-be-operated receiving unit 4. The operated data received by the operated data receiving unit 4 is temporarily stored in the operated data storage memory 8. Then, the operation unit 5 in the operation state fetches the operation data stored in the operation data storage memory 8 and performs an operation on the operation data based on the operation algorithm. The operation result data which is the result of the operation performed by the operation unit 5 is stored in the operation result data storage memory 9.
Is stored in The operation result data transmission unit 6 transmits the operation result data stored in the operation result data storage memory 9 to the bus 12.
To the input / output control unit 2 using Input / output control unit 2
Switches the communication path and transfers the operation result data to the external device 16.
Send to

When the arithmetic unit 5 is a PLD, the program data storage memory 7 is not necessary, and the communication path of the program data describing the arithmetic algorithm downloaded from the external device 16 can be switched by the input / output control unit 2. The data is directly transmitted to the arithmetic unit 5 using the bus 10, and the arithmetic unit 5 enters an arithmetic state. Further, the operated data storage memory 8
When there is no operation data, the operation data transmitted from the external device 16 is switched in the communication path by the input / output control unit 2, is received by the operation data receiving unit 4 using the bus 11, and the operation data is directly The data is input to the arithmetic unit 5. If there is no operation result data storage memory 9, the operation result data is directly transmitted from the operation unit 5 to the operation result data transmission unit 6, transmitted to the input / output control unit 2 using the bus 12, and transmitted to the external device 16. Is forwarded to

<< Function and Effect >> As described above, the arithmetic function of the IC card 1 is determined by the arithmetic algorithm described in the program data downloaded from the outside.
For this reason, the arithmetic function of the IC card 1 can be changed from the outside, and it is possible to flexibly respond to a change in the algorithm. Further, the input / output control unit 2 switches the communication path according to the type of the received data. Therefore, there is no need for a dedicated communication path for receiving various data, and there is no need to change the interface of the IC card 1. further,
By providing the program data storage memory 7, the operation data storage memory 8, and the operation result data storage memory 9, the IC card 1 which needs to store program data, operation data and operation result data in advance is applied. Ways to be available.

[Image Capture / Reproduction Method] Next, an embodiment of an image capture / reproduction method to which the IC card 1 of the present invention is applied will be described with reference to FIGS. << Structure >> FIG. 2 shows a block diagram of an image capturing / reproducing method to which the IC card 1 is applied. The image capturing / reproducing method using the IC card 1 includes the IC card 1, the image input device 1
7, an image display device 18, a photographing device 19, and a display device 27. The photographing machine 19 is for photographing a subject. The image input device 17 is for compressing the image data and transmitting the operation data and the program data which are the compressed data to the IC card 1.
Image compression unit 20, program data generation unit 21, and IC
This is a configuration including a card interface 22. IC
The card 1 is for receiving operation data and program data from an image input device, calculating the operation data based on a decompression algorithm described in the program data, and transmitting the operation data to the image display device 18. The image display device 18 is for displaying data sent from the IC card 1 on the display device 26, and includes a display control unit 26, an image memory 25, and an IC card interface 24. Display device 26
Is for displaying an image.

<< Operation >> In the following, I will be described with reference to FIG.
An image capturing and reproducing method using the C card 1 will be described. When importing image data, first, the IC card 1 is attached to the image input device 17. The subject 23 is photographed by the photographing machine 19, the captured image of the subject 23 is captured as digital data, and the captured digital data is transmitted to the image input device 17. Image input device 17
Performs compression of the received digital data with the image compression unit 20. Compressed data is stored in IC
From the card interface 22, I
Sent to C card 1. The operation data received by the IC card 1 is stored in the operation data storage memory 8 according to the above-described procedure.
Is stored in The program data generation unit 21 of the image input device 17 generates program data describing the decompression algorithm. Then, the generated program data is transmitted from the IC card interface 22 to the IC card 1.
Downloaded to The downloaded program data is stored in the program data storage memory 7 according to the above-described procedure.
Is stored in

When displaying an image on the display device 26, the IC card 1 is attached to the image display device 18. I
The operation unit 5 of the C card 1 fetches the operation data from the operation data storage memory 8 and executes the expansion processing of the operation data based on the expansion algorithm described in the program data stored in the program data storage memory 7. Then, the calculation result data is created. The operation result data transmitting unit 6 transmits the operation result data to the input / output control unit 2, switches the communication path by the input / output control unit 2, and
Send to Then, the calculation result data is stored in the image memory 25 via the IC card interface 24. The reproduced image 28 is displayed on the display device 27 by the display control unit 26 based on the calculation result data stored in the image memory 25. The detailed description of the operation of the IC card 1 has been described in the first embodiment of the present invention, and therefore is omitted in the present embodiment.

<< Functions and Effects >> As described above, in the image capturing / reproducing method to which the IC card 1 is applied, the decompression process is based on the decompression algorithm described in the program data downloaded from the image input device 17 to the IC card 1. This is executed by the arithmetic unit 5 of the IC card 1. For this reason, the image display device 18 does not need an arithmetic processing function for executing the decompression algorithm, and the image display device 18 has a simple and inexpensive configuration. Even when the compression algorithm for compressing digital data in the image compression unit 20 of the image input device 17 is changed, program data describing a decompression algorithm corresponding to the changed compression algorithm is newly added to the IC card 1. It is possible to construct a flexible and economical and rational system without having to change the image display device 18.

[Sound Import / Reproduce Method, Confidential Information Import / Reproduce Method] In the present embodiment, the case where the target data is image data is described. With the configuration as shown in FIG. 3, it is possible to realize a voice capturing / reproducing method to which the IC card 1 is applied. However, the operation and use procedure of the apparatus are the same as those of the image capturing / reproducing method to which the IC card 1 is applied. In the present embodiment, the case where the target data has a large capacity is described. However, when the target data is highly confidential, the IC card 1 is applied by configuring as shown in FIG. A confidential information capturing / reproducing method can be realized. However, except that the data fetched by the data input device 36 is subjected to encoding processing to create data to be operated on, and the program generating unit 21 generates a decoding algorithm, the same as the image fetching / reproducing method applying the IC card 1 Therefore, the description is omitted. I
Voice capture / playback method using C card 1 or I
In the method for capturing and reproducing confidential information using the C card 1, the same effect as the method for capturing and reproducing image using the IC card 1 can be obtained.

[ID Authentication Method] In the above, an image capturing and reproducing method using an ID card has been described.
An ID authentication method using an ID card can also be realized as follows by using the configuration in FIG. << Operation >> At the time of a service contract, the IC card 1 is attached to the image input device 17, and the photographer 19 photographs the expression of the contractor's face or the operation of signing at hand as the subject 23. The operation data is stored in the operation data storage memory 8 of the IC card 1 according to the above-described procedure,
The program data storing memory 7 stores program data describing the decompression algorithm. However, the operated data has information such as the expression of the contractor's face or the operation of the signing hand.

When the contractor intends to receive the service, the IC card 1 is attached to the image output device 18. Then, the arithmetic unit 5 of the IC card 1 performs expansion processing on the operation data stored in the operation data storage memory 8 based on the expansion algorithm described in the program data stored in the program data storage memory 7. The image display device 18 takes out the decompressed data and displays the reproduced image 28 on the display device 27. Then, the service provider visually compares the person who intends to receive the service with the contractor, and confirms whether or not the contractor is himself. The detailed description of the operation of the IC card 1 has been described in the first embodiment of the present invention, and therefore is omitted in the present embodiment.

<< Functions and Effects >> As described above, in the ID authentication method applying the IC card 1, the contractor himself / herself tries to receive a service by using a characteristic image such as an expression or a signing operation registered in advance. Verify whether the person is the contractor. For this reason, erroneous recognition of ID authentication is reduced. Further, the arithmetic unit 5 of the IC card 1 performs the expansion processing of the image data based on the expansion algorithm described in the program data. For this reason, the image display device does not need a function of decompressing image data, and it is not necessary to ensure consistency between the image input device and the image display device.

[Scrambling method] A descrambling method using the IC card 1 of the present invention will be described below with reference to FIGS. << Structure >> FIG. 5 is a block diagram showing a descrambling method using the IC card 1. The descrambling method using the IC card 1 has a configuration including the IC card 1, the receiver 40, and the television 44. The receiver 40 is for receiving a scrambled broadcast, transmitting and receiving data to and from the IC card 1, and transmitting data to the television 44. The receiver 40 includes an IC card interface 42 and a television interface 43. It is a configuration provided. The IC card 1 is for descrambling according to a descrambling algorithm.
Program data in which a descrambling algorithm is described is stored in a program data storage memory 7. However, the descrambling algorithm can be changed by newly downloading program data from the outside. The television 44 serves as a display for displaying images.

<< Operation >> In the following, I will be described with reference to FIG.
A descrambling method using the C card 1 will be described. When the receiving subscriber views the program, the receiving subscriber inserts the IC card 1 into the receiver 40. Receiving part 4 of receiver 40
1 receives the scrambled digital video data. The received digital video data is processed as data to be processed by an IC via the IC card interface 42.
The data is transmitted to the data receiving unit 4 of the card 1. The arithmetic unit 5 performs descrambling based on a descrambling algorithm described in the program data stored in the program data storage memory 7 in advance. The calculation result data descrambled by the calculation unit 5 is
The data is sent to the television interface 43 of the receiver 40 via the IC card interface 42. The calculation result data is transmitted to the television 44, and the descrambled video is displayed on the television 44. The detailed description of the operation of the IC card 1 has been described in the first embodiment of the present invention, and therefore is omitted in the present embodiment.

<< Function and Effect >> As described above, in the descrambling method using the IC card 1, descrambling is performed by the arithmetic unit 5 of the IC card 1 based on the descrambling algorithm. Therefore, the receiver 40 does not need a circuit for performing the descrambling process, and the receiver 40 has a simple and inexpensive configuration. Further, even when the scramble processing algorithm of the digital video data is changed, the program data describing the descrambling algorithm corresponding to the changed scramble processing algorithm can be handled by newly downloading the program data to the IC card 1. There is no need to change the machine 40. Further, descrambling is performed by the IC card 1 owned by the receiving subscriber. For this reason, it is possible to prevent a person other than the receiving subscriber from illegally descrambling and viewing the video.

[Information Providing Method] An information providing method using the IC card 1 of the present invention will be described below with reference to FIGS. << Structure >> FIG. 6 shows a block diagram of an information providing method to which the IC card 1 is applied. The information providing method using the IC card 1 includes the IC card 1 and the information providing terminal 45. The information providing terminal 45 stores the received data and the program data describing the operation algorithm, and transmits the received data and the program data describing the operation algorithm to the IC card 1. This is a configuration including an IC card interface 46, a data switching unit 47, data memories 48, 49, 50, program memories 51, 52, 53, a communication interface 54, and a data distribution unit 55.

<< Operation >> In the following, I will be described with reference to FIG.
An information providing method using the C card 1 will be described. The information data received by the communication interface 54 of the information providing terminal 45 is distributed by the data distribution unit 55, sent to the data memory, stored in the data memory, and describes an arithmetic algorithm corresponding to the attribute of the data. Program data is stored in the program memory. In the present embodiment, in the case of compressed image data, the compressed image data is stored in the data memory 48; in the case of compressed audio data, the compressed audio data is stored in the data memory 49; Data is stored in data memory 5
0 and stored. At the same time, the program memory 51 stores program data describing an image data decompression algorithm, the program memory 52 stores program data describing an audio data decompression algorithm, and the program memory 53 stores program data describing an encryption / decryption algorithm. Is stored.

When the user takes out the stored information data, the user first inserts the IC card 1 into the information providing terminal. If the information data required by the user is image data, the compressed image data from the data memory 48 is selectively passed by the data switching unit 47 and is processed as data to be processed by the IC card 1 via the IC card interface 46. The data is transmitted to the operand data receiving unit 4. Further, program data describing an algorithm for expanding image data stored in the program memory 51 is downloaded to the IC card 1. The arithmetic unit 5 of the IC card 1 performs the expansion processing of the operated data based on the expansion algorithm described in the downloaded program data. Then, the processing result is transmitted to an output device such as a reading device. Similarly, when the information data required by the user is audio data, the compressed audio data from the data memory 49 is selectively passed by the data switching unit 47 and is processed as data to be operated through the IC card interface 46. I
The data is transmitted to the data receiving unit 4 of the C card 1. In addition, program data describing an algorithm for decompressing audio data stored in the program memory 52 is downloaded to the IC card 1. The arithmetic unit 5 of the IC card 1 performs the expansion processing of the operated data based on the expansion algorithm described in the downloaded program data. Then, the processing result is transmitted to an output device such as a reading device. Similarly, when the information data required by the user is confidential data, the encrypted data from the data memory 50 is selectively passed by the data switching unit 47 and received via the IC card interface 46. The data is transmitted to the operated data receiving unit 4 of the IC card 1 as operation data. Also, the program data describing the encryption / decryption algorithm stored in the program memory 53 is I
Downloaded to C card 1. The arithmetic unit 5 of the IC card 1 executes data encryption / decryption processing based on the decryption algorithm described in the downloaded program data. Then, the processing result is transmitted to an output device such as a reading device. The detailed description of the operation of the IC card 1 has been described in the first embodiment of the present invention, and therefore is omitted in the present embodiment.

<< Function and Effect >> As described above, in the information providing method to which the IC card 1 is applied, the operated data representing the information data provided to the information providing terminal and the operation algorithm corresponding to the attribute of the data are described. The stored program data is stored. And when the user asks for information,
These are transferred to the IC card 1. Then, the IC card 1 calculates the data to be operated based on the calculation algorithm described in the program data. For this reason, the reading device does not need a function of restoring data, and does not need to use a dedicated reading device even when reading information data having different attributes. Also, information data having a new attribute can be handled by storing program data describing an operation algorithm corresponding to the information data having the new attribute in the information providing terminal.

[0040]

As described above, according to the present invention, an IC card has a function of processing data based on an arithmetic algorithm described in program data downloaded from the outside, and switches communication paths of various data. There is a function to do. For this reason, there is an advantageous effect that an economical and rational system that can flexibly respond to a change in an algorithm can be constructed by using the IC card of the present invention.

Further, according to the present invention, such as an image capturing / reproducing method, a voice capturing / reproducing method, and a confidential information capturing / reproducing method.
According to the data capture / playback method using the C card,
Since the calculation means of the IC card has a data processing function, the output device does not need a data processing function, and the output display device can be configured at low cost. Further, a change in the processing algorithm of the data of the input device can be dealt with by changing the operation algorithm downloaded to the IC card, and the advantageous effect that an economical system can be configured can be obtained.

Further, an I card to which the IC card of the present invention is applied
According to the D authentication method, the service provider stores the characteristic expression and the operation image of the contractor in the IC card and displays the image data stored in the IC card on the image output device when using the service. Since the identity of the person is confirmed, it is possible to reduce misidentification of the ID. Further, the arithmetic means of the IC card has a function of decompressing image data. For this reason, the image display device does not need the function of decompressing image data, does not require consistency between the image input device and the image display device, and has an advantageous effect of being economical.

In the descrambling method using the IC card according to the present invention, the descrambling function is not required in the receiver since the arithmetic means of the IC card has the function of descrambling. it can. Also, there is no need to change the receiver for changing the descrambling algorithm. Further, there is an advantageous effect that it is possible to prevent a situation in which a person other than the subscriber is illegally descrambled and looks at an image.

Further, according to the information providing method to which the IC card of the present invention is applied, the information providing terminal transmits a program describing an arithmetic algorithm corresponding to the attribute of the information data and the information data as the data to be operated to the IC card. It has a function to do. For this reason, a dedicated reading device corresponding to the attribute of each information is not required, and it is economical. Further, it is possible to cope with information data having a new attribute only by changing the program data to be downloaded to the IC card, and an advantageous effect of being economical is obtained.

[Brief description of the drawings]

FIG. 1 is a block diagram of an IC card of the present invention.

FIG. 2 is a block diagram showing a configuration of an image capturing / reproducing method using the IC card of the present invention.

FIG. 3 is a block diagram showing a configuration of a voice capturing / reproducing method to which the IC card of the present invention is applied.

FIG. 4 is a block diagram showing a configuration of a method for capturing and reproducing confidential data to which the IC card of the present invention is applied.

FIG. 5 is a block diagram showing a configuration of a descrambling method using the IC card of the present invention.

FIG. 6 is a block diagram showing a configuration of an information providing method using the IC card of the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 IC card 2 Input / output control unit 3 Program data receiving unit 4 Computed data receiving unit 5 Computing unit 6 Computed result data transmitting unit 7 Program data storage memory 8 Computed data storage memory 9 Computation result data storage memory 10, 11, 12 Bus 16 External device 17 Image input device 18 Image display device 19 Camera 20 Image compression unit 21 Program data generation unit 22 IC card interface 23 Subject 24 IC card interface 25 Image memory 26 Display control unit 27 Display device 28 Playback image 29 Voice input Device 30 Audio output device 31 Audio compression unit 32 Memory 33 Output control unit 34 Recorder 35 Speaker 36 Data input device 37 Data output device 38 Data encoding unit 39 Input device 40 Receiver 41 Receiver 42 IC card in Interface 43 TV interface 44 TV 45 Information providing terminal 46 IC card interface 47 Data switching unit 48, 49, 50 Data memory 51, 52, 53 Program memory 54 Communication interface 55 Data distribution unit

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁶ Identification symbol FI H04N 5/765 G06F 9/06 420J 5/781 H04N 5/781 510E 5/907

Claims (13)

[Claims] A program data receiving means for receiving program data downloaded from the outside; a data receiving means for receiving data to be operated inputted from outside; receiving the program data from the program data receiving means; An arithmetic unit for performing an arithmetic process on the arithmetic data transmitted from the arithmetic data receiving unit based on an arithmetic algorithm described in the program data; and transmitting the arithmetic result data of the arithmetic unit to the outside And an input / output control means for controlling a communication path of the program data, the operated data and the operation result data. 2. The IC card according to claim 1, further comprising a memory for storing the data to be processed, which stores the data to be processed received by the data to be processed receiving means. 3. The apparatus according to claim 1, further comprising a memory for storing operation result data which stores operation result data obtained as a result of the operation processing by said operation means. The described IC card. 4. The IC according to claim 1, further comprising a program data storage memory for storing the program data received by the program data receiving means. card. 5. The I according to claim 1, wherein said calculation means is a DSP.
C card. 6. The I according to claim 1, wherein said calculating means is a PLD.
C card. 7. A system comprising an IC card, an input device, and an output device according to claim 1, wherein at the time of data capture, data is captured at the input device, and the captured data is processed to generate data to be operated on. Transmitting the operation data from the input device to the operation data receiving means of the IC card, storing the operation data in the IC card, and inputting the program data describing an operation algorithm for processing the operation data to the input device. A step of downloading from the device to the program data receiving means of the IC card and storing the program data in the IC card; and at the time of data reproduction, the calculating means of the IC card calculates the data to be operated based on the calculation algorithm. Steps to perform processing and create operation result data A step of transmitting the operation result data from the operation result data transmission means of the IC card to the output device; and a step of outputting information described in the operation result data to the output device. Method. 8. The data capturing / reproducing method according to claim 7, wherein the data captured by the input device is image data, the operated data is data obtained by compressing the image data, and downloaded to the IC card. An image capturing and reproducing method using an IC card, wherein the program data is program data in which a decompression algorithm for decompressing compressed data is described. 9. The data capturing / reproducing method according to claim 7, wherein the data captured by the input device is audio data, the operated data is data obtained by compressing the audio data, and downloaded to the IC card. An audio capturing / reproducing method using an IC card, wherein the program data is program data describing an expansion algorithm for expanding compressed data. 10. The data capturing / reproducing method according to claim 7, wherein the data captured by the input device is highly confidential data, and the operation target data is data obtained by encoding the highly confidential data. A method for capturing and reproducing confidential information using an IC card, wherein the program data downloaded to the IC card is program data describing a decoding algorithm for decoding coded data. 11. A system comprising the IC card, the image input device and the image output device according to claim 1, wherein at the time of a service contract, the image input device captures image data such as a contractor's operation and captures the captured image. Creating data to be operated on by compressing the data; transmitting the operated data from the image input device to the operated data receiving means of the IC card; storing the data on the IC card; and expanding the operated data. Downloading the program data describing the decompression algorithm from the image input device to the program data receiving means of the IC card, and storing the program data in the IC card. The decompression processing of the data to be operated is performed based on the decompression algorithm. ,
Creating operation result data; transmitting the operation result data from the operation result data transmitting means of the IC card to an image output device; displaying information described in the operation result data on the image output device; An ID authentication method using an IC card having a step of confirming the identity of a person. 12. A system comprising the IC card according to claim 1 and a receiving device for receiving a scrambled digital video, the program data describing the descrambling algorithm when a receiving service is subscribed or when the descrambling algorithm is changed. Downloading to the program data receiving means of the IC card and storing the program in the IC card, and when receiving a reception service, receiving the scrambled digital video received by the receiving apparatus as data to be processed. An IC card having a step of transmitting from a device to an operation data receiving means of the IC card and a step of descrambling the operation data based on the descrambling algorithm by the operation means of the IC card is applied. Descrambling method. 13. A system comprising the IC card and the information providing terminal according to claim 1, wherein receiving and storing the data to be provided to the information providing terminal, and processing the data to be processed. Storing program data describing an algorithm in association with the operation data; transmitting the operation data from the information providing terminal to the IC card; and providing the program data corresponding to the operation data to the information An information providing method using an IC card, the method including a step of downloading data from a terminal to the IC card.