JPH1131128A - Data broadcast system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a data broadcast system which saves trouble to deliver the program from both a maker and a user when the maker sells the program and the user obtains it when the maker develops a new program. SOLUTION: A broadcasting device 1 repeatedly broadcasts data of the same content several times. On the other hand, a transport decoder 6 of a terminal 4 decodes the data and a storing means 7 stores the data. Next, the decoder 6 newly decodes the data, a comparing means 10 compares the data stored by the means 7 with the new data, and when those data are the same, the means 7 outputs the data to a personal computer 11. When the data compared by the means 10 are not the same, the decoder 6 repeats data decoding until at least two pieces of data become the same among data that are decoded by the decoder 6, and when they become the same, the means 7 outputs the same data to the computer 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data broadcasting system comprising a broadcasting device for broadcasting data of a program such as word processor software used in a computer, and a terminal device for receiving the data.

[0002]

2. Description of the Related Art In recent years, with the advancement of various technologies relating to digital signals, data of programs such as word processor software used in computers have begun to be transmitted using digital signals, as well as images and sounds.

In a conventional data broadcasting system for transmitting and receiving such program data, as shown in FIG. 5, a broadcasting device 1 broadcasts program data using digital signals and a terminal device 4 The system receives the data and outputs the data to the personal computer 11.

In the conventional data broadcasting system, when the terminal device 4 receives data, the terminal device 4 is charged for the data only once before or after the data is received.

[0005]

By the way, in the conventional data broadcasting system shown in FIG. 5, the terminal device 4 only receives the data broadcast by the broadcasting device 1 and outputs it to the personal computer 11. Therefore, the broadcasting device 1
Even if the data received by the terminal device 4 is incorrect data due to, for example, noise included in the data broadcasted by the terminal device 4, the terminal device 4 outputs the data to the personal computer 11 without determining whether the data is correct. I do. Therefore, when the user of the terminal device 4 uses, for example, data of a program such as word processor software output to the personal computer 11, by confirming whether or not a function of the program operates, First, it is determined whether the data received by the terminal device 4 is correct.

Further, as described above, in the conventional data broadcasting system, when the terminal device 4 receives data, the terminal device 4 charges the terminal device 4 only once before or after receiving the data. Imposing. Therefore, if the data broadcasting system is a system that charges the terminal device 4 for the data before the terminal device 4 receives the data, as described above, the terminal device 4
Even if the received data is not correct data, the terminal device 4 must pay a fee for receiving the data. On the other hand, when the conventional data broadcasting system is a system that charges the terminal device 4 for the data after the terminal device 4 receives the data,
The broadcasting device 1 may not receive a fee for data reception from the terminal device 4 in some cases, for example, the terminal device 4 does not pay a fee for the data even though the terminal device 4 receives the data.

Further, conventionally, for example, when a maker that creates a computer program develops a new program and sells the new program, first,
Among the functions of the program, only the data with limited functions are provided to the user free of charge as a demonstration, such as a floppy disk to which only the limited data has been input. Judge the content of
New programs are purchased from retail stores, mailed or ordered via the Internet. In this way, when a manufacturer develops and sells a new program, both the manufacturer and the user have trouble transferring the program.

The present invention considers the problem that a terminal device may output incorrect data in such a conventional data broadcasting system, and provides a data broadcasting system having a terminal device that outputs only correct data. The purpose is to provide.

The present invention also considers the problem that only one of the broadcasting device and the terminal device has a risk of charging for data received by the terminal device, and the terminal device is provided in both the broadcasting device and the terminal device. It is an object of the present invention to provide a data broadcasting system that shares the risk of charging data to be received.

Further, according to the present invention, when a maker develops a new program, the maker sells the program, and when the user obtains the program, both the maker and the user need to transfer the program. In light of this, if a manufacturer develops a new program, the manufacturer will sell the program, and when the user obtains the program, the data will save both the manufacturer and the user from having to hand over the program. It is intended to provide a broadcasting system.

[0011]

According to a first aspect of the present invention, there is provided a broadcast apparatus for repeatedly broadcasting data of the same content a plurality of times, and a terminal apparatus for receiving data broadcast by the broadcast apparatus. The apparatus receives the data having the same content a plurality of times, and at least two of the plurality of data are received.
This is a data broadcasting system characterized in that when two are the same, the same data is output.

According to a third aspect of the present invention, there is provided a broadcasting device for broadcasting data, a terminal device for receiving the data broadcasted by the broadcasting device, and a charge for the data when the terminal device receives the data, A data broadcasting system comprising a billing means for separately charging at least before and after receiving the data.

According to a fourth aspect of the present invention, data of a predetermined content and data of a limited portion of the predetermined content are repeatedly broadcasted a plurality of times, and all data of the predetermined content is transmitted from a terminal device. When a decryption key for decrypting is requested, a broadcast device that provides the decryption key to the terminal device, receives the data of the limited portion of the predetermined content, and receives the limited content of the predetermined content. Requesting a decryption key for decrypting all the data of the predetermined content from the broadcasting device, receiving the decryption key from the broadcasting device, and then decrypting the predetermined content. Receiving all of the data, a terminal device capable of decoding all the data of a predetermined content, and after the data of the limited portion of the predetermined content is decoded by the terminal device, the predetermined content of the limited portion is Part of Imposes a charge for over data decoding,
The data broadcasting system further comprises charging means for charging a fee for decrypting all the data having the predetermined content before or after all the data having the predetermined content is decrypted by the terminal device. .

According to a fifth aspect of the present invention, when data of a predetermined content is broadcast and a decryption key for decrypting all the data of the predetermined content is requested from a terminal device, the decryption key is changed to the above-mentioned key. A broadcasting device to be provided to a terminal device, receiving and storing the data of the predetermined content, and decoding data of a limited portion of the predetermined content, and after the decoding, the data of the predetermined content A terminal device for requesting a decryption key for decrypting everything from the broadcasting device, receiving the decryption key from the broadcasting device, and storing and storing all the data having the predetermined content; After the data of the limited portion of the content is decrypted by the terminal device, a fee is charged for decrypting the data of the limited portion of the predetermined content, and all of the data of the predetermined content is stored in the terminal device. Solution Before or after being a data broadcasting system characterized in that a charging means for imposing charges for data every decrypting the predetermined content.

[0015]

Embodiments of the present invention will be described below with reference to the drawings.

(Embodiment 1) First, the configuration of a data broadcasting system according to Embodiment 1 of the present invention will be described.

FIG. 1 shows a configuration diagram of a data broadcasting system according to the first embodiment of the present invention, and FIG. 2 shows a chart of the operation of the data broadcasting system.

The data broadcasting system according to the first embodiment of the present invention comprises a broadcasting device 1 and a terminal device 4.

The broadcasting device 1 comprises a broadcasting means 2 and a billing means 3. The broadcasting means 2 is a means for repeatedly broadcasting a word processing software program used by a computer a plurality of times using digital signals with the same contents. The broadcasting means 2 is also a means for broadcasting video and sound, in addition to the program used by the computer described above, and broadcasts the program, video and sound on separate channels. The charging unit 3 is a unit that, when the terminal device 4 described later selects and decodes a channel of a program data broadcasted by the broadcasting unit 2 and decodes it, charges the terminal device 4 for the decoding. Note that the method by which the charging means 3 charges the terminal device 4 will be described later.
A description will be given together with the operation of the data broadcasting system according to the first embodiment of the present invention.

The terminal device 4 comprises a tuner 5, a transport decoder 6, a storage means 7, a microcomputer 8, a modem 9, and a comparison means 10. The tuner 5 is a means for receiving data of a digital signal broadcast by the broadcasting device 1 when receiving a data reception instruction from the microcomputer 8 and outputting the data to the transport decoder 6. Transport decoder 6
Receives data from the tuner 5, outputs information to the effect that the data has been input to the microcomputer 8, and, based on an instruction from the microcomputer 8, outputs the above-described program and video from the broadcasting unit 2 of the broadcasting device 1. Or means for selecting a sound channel and activating the descrambler function to decode the data of the selected channel. The transport decoder 6 is a means for outputting the data of the program to the storage means 7 or the comparison means 10 based on an instruction from the microcomputer 8 when a channel of the program is selected and decoded. The storage means 7 is a means for inputting and storing data from the transport decoder 6 and for outputting data to the personal computer 11 based on a comparison result of the comparing means 10 from the microcomputer 8, which will be described later. is there. The microcomputer 8 sends the program of the program from the broadcasting device 1 to the transport decoder 6 based on an instruction to decode the data of the program from the user of the terminal device 4 or based on a comparison result of the comparing unit 10 described later. The user selects a data channel, decrypts the data, and stores the decrypted data in the storage unit 7 and the comparison unit 1.
This is a means for outputting to the transport decoder 6 an instruction as to which of 0 to output. In addition, when the transport decoder 6 first selects a channel of the program data and decodes the data, the microcomputer 8 sends to the modem 9 information indicating that the fee for that is paid to the billing means 3 of the broadcasting device 1. Output means. Further, the microcomputer 8 judges the comparison result of two or three or more data of the comparing means 10 described later, and when the same data is present among the compared data, the same data is determined. Is output to the storage unit 7 to output the information to the personal computer 11. If the same data does not exist among the data compared by the comparing means 10, the microcomputer 8 causes the transport decoder 6 to select the channel of the program data again and decode the data. The information is output to the transport decoder 6. Further, the microcomputer 8 is a means for outputting to the modem 9 information indicating that the fee for charging the storage means 7 for outputting the data to the personal computer 11 to the billing means 3. The modem 9 is a means for inputting information to the effect that the fee is to be paid to the charging means 3 from the microcomputer 8 and outputting the information to the charging means 3. The comparing means 10 is a means for comparing the data stored in the storage means 7 with the data newly decoded by the transport decoder 6. The storage unit 7 outputs the same data to the personal computer 11 when at least two of the two or three or more data compared by the comparing unit 10 are the same.

Next, the operation of the data broadcasting system according to the first embodiment of the present invention will be described.

The broadcasting means 2 of the broadcasting device 1 broadcasts programs, images, and sounds used by the computer on different channels. The broadcasting means 2 repeatedly broadcasts the data of the same program a plurality of times using digital signals.

On the other hand, when the user of the terminal device 4 requests the reception of the program data from the broadcasting device 1, the tuner 5 accepts the information to that effect via the microcomputer 8 from the user, and Receives the broadcast data and outputs it to the transport decoder 6. Then, the transport decoder 6 inputs the data from the tuner 5, selects a channel of the program data based on the instruction of the microcomputer 8, activates the descrambler function, and decodes the program data. Is output to the storage means 7, and the storage means 7 inputs and stores the data.

Further, the microcomputer 8 sends to the modem 9 information indicating that the transport decoder 6 first selects a channel of the program data and pays a fee to the billing means 3 of the broadcasting device 1 for decoding the data. Output. Then, the modem 9 inputs information to the effect that the fee is to be paid to the charging means 3 from the microcomputer 8 and transmits the information to the charging means 3 by using a telephone line connecting the modem 9 and the charging means 3. Output to Further, the billing means 3 confirms, for example, the account of the designated financial institution of the user of the terminal device 4, and from the account, the transport decoder 6 selects the channel of the program data for the first time and decrypts the data. The terminal device 4 is actually charged by a method such as a method of automatically deducting a fee for the terminal device 4. The charge for the first time that the transport decoder 6 selects the channel of the program data and decodes the data is half the charge for the data to be output to the personal computer 11.

Next, again, the tuner 5 of the terminal device 4
Receives the data of the same content repeatedly transmitted from the broadcasting device 1 and, based on an instruction from the microcomputer 8, the transport decoder 6 selects a data channel of the program, decodes the data, Output to comparison means 10.

Then, the comparing means 10 compares the data stored in the storing means 7 with the data inputted by the comparing means 10 itself.
Compare with new data. Thereafter, the microcomputer 8 judges the comparison result of the comparing means 10, and when the compared data is the same, the microcomputer 8 outputs information to that effect to the storage means 7, and the storage means 7 , And outputs the stored data to the personal computer 11. On the other hand, if the data compared by the comparing means 10 is not the same, the microcomputer 8 outputs the information to that effect to the storage means 7 and also stores the newly converted data in the storage means 7. Then, the microcomputer 8 causes the transport decoder 6 to select the channel of the program data again and outputs information to the effect that the new data is decoded to the transport decoder 6.

When the transport decoder 6 inputs information indicating that new data needs to be decoded again, the transport decoder 6 sends the latest program data of the same content repeatedly transmitted via the tuner 5. After the constituent units of the terminal device 4 repeat the above-described operation, the comparing unit 10 compares the two data stored in the storage unit 7 with the data newly decoded by the transport decoder 6. Compare. If the latest data is the same as one of the two data stored in the storage means 7, the microcomputer 8
Information indicating which data is the same is output to the storage means 7, and the storage means 7 outputs the same data to the personal computer 11. However, the storage means 7
If the latest data is not the same in either of the two data stored by the microcomputer 8, the microcomputer 8 outputs information to that effect to the storage means 7,
The microcomputer 8 outputs the information to the effect that the transport decoder 6 needs to decode new data again. Then, until the data to be compared by the transport decoder 6 and compared by the comparing means 10 and one of the plurality of data stored in the storage means 7 become the same, each configuration of the terminal device 4 is obtained. The means performs the above-described operation, and if the data decoded by the transport decoder 6 is identical to any of the plurality of data stored in the storage means 7, the storage means 7 Is output to the personal computer 11. Note that the transport decoder 6 is 2
When the program data is decoded after the first time, no charge is imposed on the terminal device 4 until the storage means 7 outputs the data to the personal computer 11.

After the data is output to the personal computer 11, the microcomputer 8 sends information to the effect that the storage means 7 has to pay the charging means 3 of the broadcasting device 1 for outputting the data to the personal computer 11. Output to the modem 9. Next, the modem 9 inputs information to the effect that the fee is to be paid to the billing means 3 from the microcomputer 8, and outputs the information to the billing means 3 by using the above-mentioned telephone line. Means 3
Charge the terminal device 4. The charge for the storage means 7 outputting the data to the personal computer 11 is the same as the charge for the transport decoder 6 selecting the program data channel for the first time and decoding the data.

Finally, the personal computer 11
Converts the input data into data that is actually used, such as a computer program.

Therefore, in the data broadcasting system according to the first embodiment of the present invention, terminal device 4 can output only correct data to personal computer 11,
In addition, both the broadcasting device 1 and the terminal device 4
Can share the risk of charging data received.

In the first embodiment, the broadcasting means 2 of the broadcasting apparatus 1 repeatedly broadcasts a word processor software program used by a computer on one channel a plurality of times. In other words, it is only necessary to repeatedly broadcast the data of the program having the same content on one channel a plurality of times, such as a program of a spreadsheet software, not limited to the software program.

In the first embodiment, the transport decoder 6 selects a channel of the program data for the first time and charges the fee for decrypting the data, and the fee that the storage means 7 outputs the data. The charge to be charged is the same, but each of the two charges is, for example, a charge of 2/3 of the charge of the target data, a charge of 1/3 of the charge of the target data, and the like. It does not have to be the same amount. In short, the two charges are not limited to both the broadcasting device 1 and the terminal device 4, even if the terminal device 4 can select and decode the data and share the risk of charging the data of the output program. I just need.

In the first embodiment, the storage means 7
One or more data are stored, and the comparing means 10
However, the data is compared with data newly decoded by the transport decoder 6, and if the compared data is not the same, the storage means 7 also stores the newly decoded data. However, the storage means 7 stores only one data, and the comparing means 10 compares the only data with the data newly decoded by the transport decoder 6, and the compared data is identical. If not, the storage means 7 may store only the newly decrypted data. In short, the comparison means 10 only needs to compare the data stored in the storage means 7 and the latest data newly decoded by the transport decoder 6 until they become the same data.

In the first embodiment, when the transport decoder 6 of the terminal device 4 first selects a channel of program data and decodes the data,
It is assumed that the terminal device 4 is charged two times when the storage unit 7 of the terminal device 4 outputs data, but the number of times the terminal device 4 is charged is determined, for example, by the transport decoder 6 If the data channel is selected three times in total and the data is decrypted, a charge is imposed every time the data is decrypted, and a charge is also imposed when the storage means 7 outputs the data. It is not limited to two times, such as charging the terminal device 4 in two times. In short, the number of charges imposed on the terminal device 4 includes two times when the transport decoder 6 first selects a channel of the program data and decodes the data, and when the storage unit 7 outputs the data. Any number of times may be used as long as.

Also, in the first embodiment, the broadcasting device 1 is provided with the charging means 3, but the data broadcasting system according to the first embodiment of the present invention does not include the charging means 3, and the comparing means 10 is simply provided. , The data stored in the storage means 7 is compared with the data newly decoded by the transport decoder 6, and when the compared data is the same, the storage means 7 Data may be output to the computer 11.

Further, in the first embodiment, after the transport decoder 6 first selects a channel of the program data and decodes the data, the storage unit 7 compares the same data compared by the comparing unit 10 with the personal data. Although the terminal device 4 is charged after outputting the data to the computer 11, the data broadcasting system according to the first embodiment of the present invention does not include the storage unit 7 and the comparing unit 10 and It is assumed that the computer 8 outputs the data decoded by the transport decoder 6 to the personal computer 11 without any comparison,
In addition, when the transport decoder 6 selects the channel of the program data, decodes the data, and outputs the data, the charging means 3 charges the data at least separately before and after the data. It may be imposed on the terminal device 4.

(Embodiment 2) First, the configuration of a data broadcasting system according to Embodiment 2 of the present invention will be described.

FIG. 3 shows a configuration diagram of a data broadcasting system according to the second embodiment of the present invention, and FIG. 4 shows a chart showing the operation of the data broadcasting system.

The data broadcasting system according to the second embodiment of the present invention comprises a broadcasting device 1 and a terminal device 4, similarly to the data broadcasting system according to the first embodiment of the present invention.

The broadcasting device 1 comprises a broadcasting means 2 and a billing means 3. The broadcasting means 2 is used for a computer, for example, data of a predetermined content such as a program of table creation software and the above-mentioned predetermined content such as creating only a table of a limited size. And means for repeatedly broadcasting a limited portion of the data a plurality of times separately using a digital signal using two channels. Hereinafter, data of predetermined content broadcasted by the broadcasting device 1 is referred to as function extension data, and data of a limited portion of the predetermined content is referred to as function limited data. The broadcasting unit 2 is also a unit that broadcasts video and sound on a channel different from the above-described two channels, in addition to the above-described program data. Billing means 3
Is a means for charging the terminal device 4 for decoding the data when the terminal device 4 described later receives and decodes the data of the program broadcast by the broadcasting means 2. The method of charging the charging means 3 will be described later together with the operation of the data broadcasting system according to the second embodiment of the present invention.

The terminal device 4 comprises a tuner 5, a transport decoder 6, a microcomputer 8, and a modem 9. The tuner 5 is means for receiving digital signal data broadcast by the broadcasting device 1 when receiving an instruction to receive program data from the microcomputer 8 and outputting the digital signal data to the transport decoder 6. The transport decoder 6 is a means for inputting data from the tuner 5, matching channels based on instructions from the microcomputer 8, decoding function-limited data, and outputting the data to the personal computer 11. The transport decoder 6 activates the descrambler function by adjusting the channel only when a function expandable key described later in the operation of the data broadcasting system according to the second embodiment of the present invention is input from the microcomputer 8. Can decrypt the extension data, usually
Only function-limited data can be decrypted. The microcomputer 8 causes the tuner 5 to receive data from the broadcasting device 1 when receiving a data reception instruction from the user of the terminal device 4, causes the transport decoder 6 to decode the data, and outputs the data to the personal computer 11. It is a means to cause. The microcomputer 8 charges a fee for the transport decoder 6 to decode the function-limited data and output the data to the personal computer 11, or the microcomputer 8 decodes the function-extended data to the personal computer 11 and outputs the data to the personal computer 11. This is a means for outputting information to the effect that the fee for the service is paid to the charging means 3 to the modem 9. Also, as described above, since the transport decoder 6 can usually decode only the function-limited data, when the user of the terminal device 4 requests the function extension data, the microcomputer 8
Is a means for receiving the request for decrypting the function extension data from the user via, for example, the personal computer 11 and outputting the request to the modem 9. Further, when the transport decoder 6 decodes the function expansion data, the microcomputer 8 inputs from the modem 9 a function expandable key described later in the operation of the data broadcasting system according to the second embodiment of the present invention, It is also a means for outputting to the transport decoder 6. The modem 9
This is a means for inputting information to the effect that the fee is to be paid to the charging means 3 from the microcomputer 8 and outputting the information to the charging means 3. When the user of the terminal device 4 requests the function extension data, the modem 9 inputs information to that effect from the microcomputer 8 and outputs the information to the broadcasting device 1. Further, the modem 9 usually inputs a function-expandable key from the broadcasting device 1 for descrambling the function-extended data and enabling the transport decoder 6 to decode the function-extended data, It is also a means for outputting to the transport decoder 6.

Next, the operation of the data broadcasting system according to the second embodiment of the present invention will be described.

The broadcasting means 2 of the broadcasting device 1 broadcasts the function extension data, the function limitation data, the video, and the sound on different channels. The broadcasting means 2 repeatedly broadcasts the function extension data and the function limitation data a plurality of times using digital signals.

On the other hand, when the user of the terminal device 4 requests the function limitation data from the broadcasting device 1, the tuner 5
The information to that effect is received from the user via the microcomputer 8, and the data broadcast by the broadcasting device 1 is received and output to the transport decoder 6.

Then, the transport decoder 6 inputs data from the tuner 5, tunes the channel based on the instruction of the microcomputer 8, decodes the function-limited data, and outputs it to the personal computer 11.

Further, the microcomputer 8 outputs to the modem 9 information indicating that the transport decoder 6 decodes the function limitation data and pays the fee for the output to the personal computer 11 to the charging means 3 of the broadcasting device 1. , The modem 9 outputs the information to the billing means 3.
Then, the charging unit 3 actually charges the terminal device 4.

Thereafter, the personal computer 11
The input function-limited data is converted into data actually used such as a computer program.

The data of the program output to the personal computer 11 is function-limited data, that is, data of a limited part of predetermined contents. Check the content of the data, all the data of that data, that is,
When requesting the decoding of the function extension data, the microcomputer 8 accepts the request from the user, for example, via the personal computer 11, and broadcasts the request via the modem 9 via the telephone line. Output to device 1. Thereafter, the broadcasting device 1 sends a function-expandable key, such as an extended-function-data decipherable number, to the modem 9 using a telephone line so that the terminal device 4 can decode the function-extended data. Output.

The broadcast apparatus 1 sends the function-expandable key to the modem 9
After that, the modem 9 sets its function-expandable key to
The data is output to the transport decoder 6 via the microcomputer 8, and the transport decoder 6 uses the function-expandable key to remove the scramble that has been applied and to decode the function-extended data.

Then, the tuner 5 receives the data broadcasted by the broadcasting device 1, and the transport decoder 6
The data from the tuner 5 is input, the channel is adjusted based on the instruction of the microcomputer 8, the function expansion data is decoded, and the data is output to the personal computer 11.

Further, the microcomputer 8 outputs to the modem 9 information indicating that the transport decoder 6 decodes the function extension data and pays the fee for the output to the personal computer 11 to the charging means 3. , And outputs the information to the charging means 3. Then, the charging unit 3 charges the terminal device 4.

Finally, the personal computer 11
Converts the input function extension data to data that is actually used, such as a computer program.

As described above, the second embodiment of the present invention
In the data broadcasting system, for example, when a maker develops a new program, the maker sells the program, and when a user obtains the program, both the maker and the user eliminate the trouble of transferring the program. be able to.

In the second embodiment, the broadcasting means 2 of the broadcasting device 1 broadcasts the function extension data and the function limitation data using different channels, but the broadcasting means 2 uses one channel. The function extension data and the function limitation data may be repeatedly broadcast a plurality of times at predetermined intervals. In this case, when the broadcasting means 2 broadcasts the function-limited data, the transport decoder 6 of the terminal device 4 enables the function-limited data to be decoded, and is usually scrambled. Means that the function expansion data cannot be decrypted, and the transport decoder 6 uses the function expansion-capable key to take the scramble that was applied, and is able to decrypt all the function expansion data. When the broadcasting means 2 broadcasts the function extension data, the transport decoder 6 may be capable of decoding the function extension data.

Further, in the second embodiment, the broadcasting means 2 of the broadcasting device 1 broadcasts the function extension data and the function limitation data on different channels as the program data. Data is,
The terminal device 4 receives and accumulates the function extension data including the function limitation data, which is only the data of the predetermined content, that is, the function extension data including the function limitation data.
For example, the terminal device 4 cannot decode a subroutine of the program of the function extension data, but can decode only an outline of the program, that is, can decode only the function-limited data. Only when the decoder 6 is able to decrypt all of the function-extended data by using the function-expandable key to break the scramble that was applied,
The transport decoder 6 may be able to decode, for example, a subroutine in the program of the stored function expansion data, that is, it may be able to decode the function expansion data.

In the second embodiment, the terminal device 4 is charged after the function expansion data is output to the personal computer 11, but before the transport decoder 6 decodes the function expansion data, The terminal device 4 may be charged.

In the second embodiment, when the user of the terminal device 4 requests the function extension data, the information to that effect is transmitted via the personal computer 11, the microcomputer 8, and the modem 9 using a telephone line. , Broadcasting device 1
However, the user of the terminal device 4 may directly call the charging unit 3 to notify the information to that effect. In the first and second embodiments, Although the broadcasting device 1 includes the charging unit 3, the charging unit 3
Independent of the broadcasting device 1, the data broadcasting system of the present invention, together with the broadcasting device 1 and the terminal device 4,
May be provided.

In the first and second embodiments, the personal computer 11 converts the input data into data that is actually used, such as a computer program, but the terminal device 4 is provided with a translating means. The translation means converts the data from the tuner 5 into data that is actually used, such as a computer program,
The personal computer 11 may input the converted data. Or the microcomputer 8
However, the personal computer 11 may convert the data from the tuner 5 into data that is actually used, such as a computer program, and input the converted data.

[0059]

As is apparent from the above description, the present invention can provide a data broadcasting system including a terminal device that outputs only correct data.

Further, the present invention can provide a data broadcasting system in which both the broadcasting device and the terminal device share the risk of charging the data received by the terminal device.

Further, according to the present invention, when a maker develops a new program, the maker sells the program, and when the user obtains the program, both the maker and the user need to transfer the program. It is possible to provide a data broadcasting system that eliminates the need.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a data broadcasting system according to a first embodiment of the present invention;

FIG. 2 is a chart showing an operation of the data broadcasting system according to the first embodiment of the present invention.

FIG. 3 is a configuration diagram of a data broadcasting system according to a second embodiment of the present invention.

FIG. 4 is a chart showing an operation of the data broadcasting system according to the second embodiment of the present invention.

FIG. 5 is a configuration diagram of a conventional data broadcasting system.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Broadcasting apparatus 2 Broadcasting means 3 Billing means 4 Terminal device 5 Tuner 6 Transport decoder 7 Storage means 8 Microcomputer 9 Modem 10 Comparison means 11 Personal computer

Claims (5)

[Claims] 1. A broadcasting device for repeatedly broadcasting data of the same content a plurality of times, and a terminal device for receiving data broadcast by the broadcasting device, wherein the terminal device receives the data of the same content a plurality of times. And among those multiple data,
A data broadcasting system which outputs the same data when at least two are the same. 2. When the terminal device outputs data,
2. The data broadcasting system according to claim 1, further comprising: charging means for charging the data at least when the data is received for the first time and separately after the output. 3. A broadcasting device for broadcasting data, a terminal device for receiving data broadcasted by the broadcasting device, and a charge for the data when the terminal device receives the data, at least a charge for receiving the data. A data broadcasting system, comprising: a billing unit for separately charging before and after. 4. A method according to claim 1, further comprising the step of repeatedly broadcasting data of a predetermined content and data of a limited portion of the predetermined content a plurality of times,
Further, when a decryption key for decrypting all of the predetermined content data is requested from the terminal device, a broadcasting device that provides the decryption key to the terminal device, and a data of a limited portion of the predetermined content are transmitted. Receiving, decrypts the data of the limited portion of the predetermined content, and after the decryption, requests the broadcast device for a decryption key for decrypting all the data of the predetermined content, and from the broadcast device After receiving the decryption key, receive all the data of the predetermined content,
A terminal device capable of decrypting all data of a predetermined content, and charging a fee for decrypting the limited portion of the predetermined content after the data of the limited portion of the predetermined content is decrypted by the terminal device. A data broadcasting system comprising: charging means for charging before or after all the data of the predetermined content is decrypted by the terminal device for decrypting all the data of the predetermined content. . 5. A broadcasting device for broadcasting data of a predetermined content and, when a decryption key for decrypting all the data of the predetermined content is requested from a terminal device, providing the decryption key to the terminal device. And receiving and storing the data of the predetermined content, and decoding data of a limited portion of the predetermined content, and after decoding, decoding all the data of the predetermined content. Requesting a decryption key from the broadcast device and receiving the decryption key from the broadcast device,
A terminal device that can decode all the data of the predetermined content that has been stored, and a limited portion of the predetermined content after the data of the limited portion of the predetermined content is decoded by the terminal device. Charging means for imposing a charge for decrypting the data, and charging a charge for decrypting all the data having the predetermined content before or after all the data having the predetermined content is decrypted by the terminal device. A data broadcasting system characterized by the following.