JPH10285129A - Receiver and transmitter-receiver for service information - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow each reception terminal U to receive service information for a reception period with functions corresponding to reception charge paid by each user in the system that serves service information of a limited broadcast program in FM teletext multiplexing broadcast programs. SOLUTION: In an enterprise such as an FM broadcast station U0, a processing circuit 12 delivers a reception permission code denoting contract unit number information corresponding to a received broadcast reception charge to the user by means of the postal service or the like. When an input circuit 35 accepts the reception permission code at the reception terminal U, a processing circuit 33 uses a function coefficient corresponding to a function level of the terminal stored in a memory M3 to calculate the reception enable period based on the contract unit number, to permit the reception of the limited broadcast for the period and to allow a display device 34 to display decoded teletext information. Thus, the reception permission period is extended more as the transferred reception charge is higher or the function of the reception terminal U is lower and the reception permission period is properly set.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to FM (Frequency Modulation) text multiplex broadcasting which provides service information by using a gap between broadcast waves, as a limited broadcast capable of providing information only to specific users. The present invention relates to a service information receiving device and a transmitting / receiving device that are preferably implemented.

[0002]

2. Description of the Related Art Hitherto, it has been widely practiced to transmit multiplexed service information in a gap between broadcast waves as described above. In recent years, in particular, in recent years, FM broadcast waves have been used to broadcast programs. Services that provide information and other information such as news and weather are becoming widespread as so-called visible radios.

[0003] In the FM text multiplex broadcasting, broadly speaking, if a compatible receiving terminal is purchased, a free broadcast such as the news and weather forecast in which information can be used, and a dedicated receiving terminal are purchased. It is classified as a paid limited broadcast that can be used only by the user who paid the reception fee.

[0004] The service information provided by the FM teletext broadcasting is provided with a service identification. In a general radio receiver used as the visible radio, only the service information whose service identification is free broadcasting is provided. The service information is decoded so as to display characters, and the remaining service information of the service identification of the limited broadcast is not taken in. On the other hand, the limited broadcast receiving terminal decodes the service information of the service identification that can be supported, and is configured to be able to display characters, and is configured to be able to display the free broadcast service information in characters. Sometimes.

[0005]

As the display format of the FM teletext, for example, a format such as 2-line display, 8-line display, and free format is defined. In response to this, a plurality of types of receiving terminals are prepared on the receiving terminal side, from a popular type portable type 2-tone 2-line display receiving terminal to a sophisticated receiving terminal capable of displaying color graphics for navigation. Each receiving terminal can display only the program corresponding to the function level, and for example, is the receiving terminal of the two-gradation two-line display capable of displaying only the program of the two-line format. It cannot display figures. Therefore, it is necessary to perform charging corresponding to the function of each receiving terminal.

[0006] In addition, there is a high possibility that program broadcasting of a plurality of types of service information will be started or will be started in the future, and these program broadcasts are operated for each independent limited broadcaster. It is difficult to select these completely different information with one receiving terminal as appropriate and charge the business as needed. For example, in the case of charging every fixed period, if the reception fee is made uniform, inequality occurs due to the difference in functions between the receiving terminals as described above. Management becomes extremely complicated.

Further, in VICS (road traffic information communication system), which has already started to be used in limited broadcasting of FM text multiplex broadcasting, a receiving contract fee is added in advance to the receiving terminal, that is, the device price of an automobile navigation device. After the purchase, the user can continue receiving.

However, in such a billing method,
The receivable period depends on the use period or the product life of the receiving terminal, and the use period or the length of the product life may cause inequality between users, or the quality of the receiving terminal may improve and the product The longer the service life, the lower the demand for replacement and the lower the reception fee income.Therefore, the service information must be charged only for a certain period of time and the service information can be used only by the user who paid the reception fee. Is desired.

An object of the present invention is to provide a service information receiving apparatus and a service information transmitting / receiving apparatus capable of accurately receiving only service information having contents corresponding to a reception fee.

[0010]

According to a first aspect of the present invention, there is provided a service information receiving apparatus capable of limited reception of service information having a plurality of stages of function levels transmitted from a business operator only with a predetermined receiving apparatus. Receiving device,
Storage means for storing a function coefficient corresponding to a function level of the receiving device, receiving means for receiving the service information, display means for performing display output in response to an output of the receiving means, and Control means for causing the receiving means to receive service information at a function level corresponding to the stored function coefficient.

According to the above arrangement, in a service information receiving apparatus suitably implemented as an FM teletext limited broadcasting receiving apparatus or the like, for example, the display means comprises
If there is a difference in the function level of each receiving device, such as a line display and an eight-line display, such that the reproduction level is different even when the same program is received, the control means determines the function level of the receiving device. It is possible to prevent display of service information that does not match the function level of the receiving apparatus, such that the receiving means only receives the service information and the 8-line format program is displayed on the two-line displaying receiving means. .

With this configuration, the service information having the function level commensurate with the reception fee can be accurately displayed and output together with the display means by at least a slight change in the configuration that only changes the function coefficient stored in the storage means. be able to.

According to a second aspect of the present invention, there is provided a service information transmitting / receiving apparatus according to the first aspect of the present invention, wherein the transmitting apparatus on the business side comprises an information generating source of service information to be transmitted. A transmission means for transmitting the service information created by the information creation source and a reception fee received from each user, calculate the number of reception contracts, create a reception permission code corresponding to the number of reception contracts, and perform limited reception. Receiving permission code creating means for giving to each user of the receiving apparatus to be enabled, the receiving apparatus further comprising: input means for inputting the receiving permission code; and the input receiving permission code And a function coefficient stored in the storage unit, a reception permission code decoding unit that calculates a reception permission period and sets the reception permission period in the control unit.

[0014] According to the above arrangement, the broadcaster or other business operator converts the reception fee received from each user into the number of reception contracts, creates a reception permission code for the number of reception contracts,
Notify users by mail, personal computer communication, or broadcast waves. On the other hand, on the receiving device side such as a listener, upon receiving the notification of the reception permission code, when the mailing or personal computer communication is used, the user inputs the reception permission code from the input means, and In the case of using waves, input means such as a decoding circuit for a received signal takes in a reception permission code.

In response to this, the reception permission code decoding means calculates the reception permission code using a function coefficient which is stored in advance in the storage means and indicates the function level of the receiving apparatus, and calculates a reception permission period. . For example, the function coefficient of the lowest function level is set as a reference value of 1, and the higher the function level, the smaller the function coefficient is set, and during the unit reception permission period corresponding to the unit number, the reception permission is set. The reception permission period can be determined by multiplying the number of functions represented by the code by the function coefficient. Therefore, the obtained reception permission period becomes longer as the received reception fee becomes higher, that is, as the number of reception contracts increases or as the function level of the reception device decreases.

In this manner, the reception permission period can be appropriately set in the receiving device in accordance with the reception fee received from the user and the function level of the receiving device, that is, the reproduction level of the program.

Furthermore, the service information receiving apparatus according to the third aspect of the present invention is capable of transmitting a plurality of types of service information transmitted from the business side and for which a receiving fee is individually set, using only a predetermined receiving apparatus, and A receiving device that enables limited reception of only desired type of service information, a storage unit that stores a service coefficient corresponding to a reception fee of the type of service information that can be received by the receiving device, and a storage unit that stores the service information. Receiving means for receiving, display means for performing a display output in response to the output of the receiving means, and control means for causing the receiving means to receive service information of a type corresponding to a service coefficient stored in the storage means. It is characterized by including.

According to the above arrangement, in a service information receiving apparatus suitably implemented as an FM teletext limited broadcast receiving apparatus or the like, for example, two programs having different operators are commensurate with the reception fee. The control unit controls the reception unit in response to the service coefficient stored in the storage unit corresponding to the service information, and causes the reception unit to appropriately receive the plurality of types of service information.

Therefore, a plurality of types of service information can be appropriately selected and received according to the reception fee by a common receiving device.

According to a fourth aspect of the present invention, there is provided a service information transmitting / receiving apparatus, wherein the transmitting apparatus on the side of the business operator is different from the receiving apparatus according to the third aspect in that an information generating source of service information to be transmitted is provided. A transmission means for transmitting the service information created by the information creation source and a reception fee received from each user, calculate the number of reception contracts, create a reception permission code corresponding to the number of reception contracts, and perform limited reception. Receiving permission code creating means for giving to each user of the receiving apparatus to be enabled, the receiving apparatus further comprising: input means for inputting the receiving permission code; and the input receiving permission code And a service coefficient stored in the storage means, and a reception permission code decoding means for calculating a reception permission period and setting it in the control means.

According to the above arrangement, the broadcaster or other business operator converts the reception fee received from each user into the number of reception contracts, creates a reception permission code for the number of reception contracts,
Notify users by mail, personal computer communication, or broadcast waves. On the other hand, on the receiving device side such as a listener, upon receiving the notification of the reception permission code, when the mailing or personal computer communication is used, the user inputs the reception permission code from the input means, and In the case of using waves, input means such as a decoding circuit for a received signal takes in a reception permission code.

In response to this, the reception permission code decoding means performs an operation with the reception permission code using the service coefficient of the reception apparatus stored in the storage means in advance to calculate a reception permission period. . The service coefficient is set for each service information. For example, the unit reception permission period is divided by the sum of the service coefficients stored in the storage unit corresponding to the service information to be received, and further, The reception permission period is calculated by multiplying the obtained number of mouths.

Therefore, only the service information of the service coefficient stored in the storage means can be accurately received from a plurality of types of service information for a period commensurate with the paid reception fee.

Furthermore, the service information receiving apparatus according to the fifth aspect of the present invention includes a plurality of types of service information transmitted from a business side, each of which has a plurality of function levels, and for which a reception fee is set individually. Is a predetermined receiving device only, and only a desired type of service information, a receiving device capable of limited reception at a desired function level, a function coefficient corresponding to the function level of the receiving device and Storage means for storing a service coefficient corresponding to a reception fee of the type of service information receivable by the receiving device;
Receiving means for receiving the service information, display means for performing display output in response to the output of the receiving means, and service information of a type corresponding to a service coefficient stored in the storage means, And control means for causing the receiving means to receive at a corresponding function level.

Therefore, the service information corresponding to the reception fee can be selected from a plurality of types of service information by a slight change in the configuration in which only the function coefficient and the service coefficient stored in the storage means are changed by the common receiving apparatus. And display and output at a function level commensurate with the reception fee.

According to a sixth aspect of the present invention, there is provided a service information transmitting and receiving apparatus, wherein the transmitting apparatus on the side of the business operator is different from the receiving apparatus according to the fifth aspect in that the information generating source of the service information to be transmitted is A transmission means for transmitting the service information created by the information creation source and a reception fee received from each user, calculate the number of reception contracts, create a reception permission code corresponding to the number of reception contracts, and perform limited reception. Receiving permission code creating means for giving to each user of the receiving apparatus to be enabled, the receiving apparatus further comprising: input means for inputting the receiving permission code; and the input receiving permission code And a reception permission code decoding unit for calculating a function coefficient and a service coefficient stored in the storage unit, calculating a reception permission period, and setting the reception permission period in the control unit. And butterflies.

Therefore, from the plurality of types of service information, only the target type of service information is accurately received for a period corresponding to the type of the service information and the function level of the receiving device with respect to the reception fee. be able to.

Further, in the service information transmitting and receiving apparatus according to the invention of claim 7, the reception permission code decoding means of the receiving apparatus receives from the input means a change in the type of service information to be received. Calculating the remaining number of contracts using the remaining reception permission period and the current service coefficient, and calculating a new reception permission period for the remaining number of contracts using the service coefficient after the change. Is set.

According to the above configuration, the reception permission period is not set for each function level of the receiving device and / or for each type of service information to be received, but the reception permission period is set collectively. In addition, the receiving device automatically calculates and sets the common reception permission period corresponding to the number of subscription contracts, so as described above, changes such as addition or deletion of service contents during the contract and Changes can be easily accommodated. In such a change, it is only necessary to change the storage contents of the storage means, and it is possible to eliminate the change of hardware.

Further, in the service information transmitting / receiving apparatus according to the invention of claim 8, the receiving permission code decoding means of the receiving apparatus is configured such that a receiving permission period desired by a user is input from the input means. The required number of contracts is calculated using the function coefficient and / or the service coefficient stored in the storage means, and the calculated number is displayed on the display means.

According to the above configuration, in calculating the reception fee, the user is required to know the reception fee corresponding to the function level of the receiving device, the knowledge of the individual reception fee for each service information to be received, and the calculation formula. The required number of contracts is automatically calculated simply by inputting the desired function level, the type of service information to be received, and the desired reception permission period from the input means without the need for complicated knowledge of Is displayed.

Therefore, the user does not need to perform complicated work of calculating the reception fee, such as comparing the fee table, when paying the reception fee, and the convenience can be improved.

Further, in the service information transmitting / receiving apparatus according to the ninth aspect of the present invention, the reception permission code includes reception contract number information and issuance management information capable of determining before and after the issuance date. Features.

According to the above configuration, the reception permission code can be determined before and after the issuance date by the issuance management information. For example, when the minimum unit of the reception permission period is one month, the issuance management information is Updated every month,
It is possible to determine before and after the issue month.

Therefore, when the reception permission code is input to the reception device, the content of the reception permission code is decoded, and a reception permission period corresponding to the reception contract number information is set.
Even if the received permission code used once is used again and entered at a later date, etc., based on the issuance management information, whether the received permission code has been updated from the currently registered code. Can be determined. This prevents unauthorized use such as substantially extending the reception permission period by re-entering the reception permission code used once.

In the service information transmitting / receiving apparatus according to the tenth aspect of the present invention, the reception permission code comprises reception permission information based on the reception contract number information and the issuance management information, and the reception permission information includes an error correction code. After the code is added, it is created by being encrypted with terminal-specific information unique to each receiving device.

According to the above configuration, the reception permission information including the reception contract number information and the issuance management information is encrypted with the terminal specific information, and therefore, the terminal specific information set in advance in each of the receiving devices matches. The reception permission information can be decrypted only when the reception permission code is transmitted, thereby preventing the reception permission code from being diverted to another receiving apparatus.

Further, an error correction code is added to the reception permission information, and the reception permission code is assigned to a user by mail or the like instead of being set in each receiving apparatus by using a broadcast wave. If the user inputs from the input means, if the correct reception permission code is not input, the reception permission information cannot be correctly decoded, thereby preventing erroneous input.

[0039]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS.

FIG. 1 is a system configuration diagram of a limited broadcast of FM teletext broadcasting according to an embodiment of the present invention. In FIG. 1, reference characters U1, U2, U3,. , Service information that can be displayed and reproduced is transmitted in a multiplexed manner only at a specific receiving terminal indicated by reference numeral U).

In the FM broadcasting station U0, stereo audio signals of both left and right channels, such as music and voice, from the stereo audio signal source 1 are input to the stereo modulation circuit 2, and L + R,
The FM signal is modulated into an L-R signal, and further, in the FM modulation circuit 3, a transmission signal is generated by frequency-modulating a carrier having a frequency unique to each FM broadcasting station U 0, and the transmission signal is transmitted from the transmission circuit 4 to the antenna 5. Has been sent through.

In the receiving terminal U, the carrier signal of the FM broadcasting station desired by the user is extracted and amplified by the receiving circuit 22 from the received signal received by the antenna 21, and the carrier component is removed by the FM demodulating circuit 23. After that, the signal is demodulated by the stereo demodulation circuit 24 into the stereo sound signals of the left and right channels. The demodulated stereo sound signals of the left and right channels are power-amplified by the amplifiers AL and AR, and then are sounded by the speakers SPL and SPR of the left and right channels. In this way, conventional free broadcasts such as the music and voice can be heard.

The FM broadcasting station U0 is provided with a service information source 6, which is separated from the spectrum of the acoustic signal component up to 53kHz in a 100kHz baseband. 76 kh
Character multiplexed data of ± 4 kHz with z as the center frequency is output. The character multiplexed data is superimposed on an audio signal in the stereo modulation circuit 2 and output to the FM modulation circuit 3.

Further, the FM broadcasting station U0 has a user file 11 storing terminal-specific information and contract contents of the receiving terminal U owned by each user, and a corresponding data stored in the user file 11. A processing circuit 12 for creating a reception permission code for each user as described below;
An information processing device such as a so-called workstation is provided which includes a man-machine interface of the processing circuit 12 such as a keyboard 13 and a display device 14, and a printing device 15 for outputting and printing desired data from the processing circuit 12. ing.

In the FM broadcasting station U0, input is made from the keyboard 13 or the like in response to the transfer status to a financial institution or the like, application for a contract from the user, and notification of a change.
Information about each user such as a name, a telephone number, a facsimile number, etc., the contract contents such as a reception permission period and a receivable program described later, the terminal-specific information and the function level of the reception terminal U are stored in the user file 11. Is stored. From this FM broadcasting station U0, the user file 1
An encrypted reception permission code is created based on the contents of each user's contract stored in 1 and is notified to the user by postal mail as shown in FIG. Notified.

In the above-described example, the case where the carrier performing limited broadcast of FM teletext broadcasting is the same as the FM broadcast station U0 is shown. , Configuration and service information source 6 for management of each receiving terminal U such as the workstation
Is provided on the business side. Further, a plurality of programs having different service identifications can be provided to a broadcast wave from one FM broadcasting station U0 as described later, and service information from one or a plurality of operators is input to the FM broadcasting station U0. Is done.

On the other hand, at the receiving terminal U, the received signal is also input to the filter 31 to extract the frequency component of the character multiplexed data.
It is reproduced as character multiplexed data. This character multiplex data is
In the processing circuit 33 realized by a microcomputer or the like, when the service information of the service identification targeted by the receiving terminal U is used, and an appropriate receiving contract is established with the business operator, and limited broadcasting can be received. Is decoded into character data and is displayed as a character such as a character or a symbol by the display device 34 realized by a liquid crystal panel or the like. In this way, for example, a message function, a paging function of reading out only a specific receiving terminal, and the like are realized, and communication and broadcasting can be integrated.

In addition, in connection with the processing circuit 33, which is realized by a key switch or the like, a channel selection operation, a limited broadcast program page selection operation, and an input operation of the reception permission code indicating that the reception contract has been established. An input device 35 for performing such operations is provided.

Further, in connection with the processing circuit 33, it is used for storing received character multiplexed data, managing character multiplexed data, storing display data, managing key switch data, and the like. A memory M1 realized by a readable / writable memory such as a RAM and a flash memory, and a non-volatile read-only memory such as a mask ROM or a UVEP / ROM storing a decoding procedure of the character multiplex data and the like. A memory M2 realized by
At the time of shipment from a manufacturer or at a store, terminal-specific information unique to each receiving terminal U and a function coefficient indicating the function level are recorded. A memory M3 that stores the setting status of the receiving terminal U and is realized by a nonvolatile readable / writable memory such as a flash memory is provided.

The memory M3 is used when the memory M1 is not nonvolatile, in which case the memory M3 may be omitted. Further, the memories M1 and M2 are
It may be built in the processing circuit 33.

Therefore, the processing circuit 33 includes the input device 3
5 by using the terminal-specific information unique to the receiving terminal U stored in the memory M3 and performing a decoding process described later stored in the memory M2. The permission information is decoded, and of the character multiplexed data input from the decoder 32, the character multiplexed data of the receivable program is fetched into the memory M1 for the reception permission period set corresponding to the reception permission information. In response to an input operation to the input device 35, a display is output to the display device 34 as appropriate. In this way, it is possible to receive a limited broadcast using FM teletext broadcasting.

FIG. 2 is a diagram showing an operation flow of limited broadcasting using FM teletext broadcasting configured as described above. The owner or user of the receiving terminal U (in the present specification, all users are described in a unified manner) sends desired service contents to the business operator through a financial institution, for example, A predetermined reception fee corresponding to the function level of the receiving terminal owned, the reception permission period, and the like is paid.

When the completion of payment of the reception fee is notified from the financial institution or the like to the business operator, the business operator, as described later, sets the contract number information indicating the number of contract units corresponding to the reception fee, Reception permission information is created from the code ID information that can determine before and after the code issuance date, and the reception permission information is encrypted using the terminal-specific information of the target reception terminal to create a reception permission code. Then, the user is notified through the mail or the personal computer communication. Therefore, this reception permission code cannot decode the correct reception permission information due to the difference in the terminal specific information, except for the target receiving terminal.

The user who has been notified of the reception permission code,
The reception permission code is input from the input device 35 also serving as a tuning key, and in response to this, the processing circuit 33 of the reception terminal U reads the terminal-specific information from the memory M3 and After decoding the reception permission information in accordance with the procedure read from M2, correct / incorrect judgment is made. If correct, new reception permission information is stored in the memory M3. As a result, it is possible to receive the limited broadcast at the function level corresponding to the reception permission information and only during the reception permission period.

Hereinafter, the data structure of FM teletext broadcasting will be described. For details, see the Official Gazette (August 2, 1994).
5 No. 164). As shown in FIG. 3A, a packet which is a unit of data is composed of a 16-bit information code following a synchronization code for synchronization determination and a check code for error correction and error detection. 272 of 190 bits and 82 bits
One packet is composed of bits.

As shown in FIG. 3 (b), the information bits are composed of a prefix indicating data identification information and an engagement relationship, and a data block in which the main body of program information and various control information are stored. It is configured.

As shown in FIG. 3C, the prefix includes 4-bit service identification data, 1-bit decoding identification data, 1-bit information end data, 2-bit update flag data, It consists of group number data and data packet number data.

The service identification data is the 4-bit data at the forefront of the prefix.
It is 16 types of data from 0 to 15 (00h to 0Fh). Of these, 0 to 3 (00h to 03h) represent free broadcast programs, and 4 to 12 (04h to 0Ch) represent limited broadcasts and reserves.
4, 15 (0Dh, 0Eh, 0Fh) represent additional information for identifying the time and the broadcasting station, program index information, and an operation signal for broadcasting, respectively.

Therefore, among the service identifications for the limited broadcast and the reserve, the present invention provides the VCIS
Excluding 4 to 6 (04h to 06h) used in information and 7 (07h) used in some broadcasting stations, for example, it can be performed using a service identification of 12 (0Ch).

The decryption identification data may be of a recording type in which subsequent data is displayed only when all data groups described later are received without error, or may be in the middle of a data group. However, if there is no error in the received data, it is data indicating whether the display is of a sequential type, in which display is performed sequentially. The information end data indicates whether the data packet is data in the middle of the data group or the last data. The update flag data is data that cyclically represents the two bits, that is, 0, 1, 2, and 3.
The data is updated every time the data is updated. Therefore, when the update flag data is the same, it indicates that the data is the same as the data transmitted previously.

The data group number data and the data packet number data together with the information end data represent an assembly structure of service information, and will be described with reference to FIG.

FIG. 4 is a diagram showing a hierarchical structure of character multiplexed data for explaining a receiving operation of FM character multiplex broadcasting. The said 1 of the hierarchy 1 transmitted from FM broadcast station U0
The 6 kbps multiplexed signal is input from the receiving circuit 22 to the decoder 32 via the filter 31, and is first reproduced by a signal demodulation processing section of the decoder 32 into data and a clock. Then, the packet is extracted from the data such as the synchronization detection and the serially transmitted data, and subsequently, the error correction / error detection processing unit of the decoder 32 uses the check code,
In the error correction and error detection of the packet data alone, the error correction is performed on a frame basis. When the error correction and error detection are performed as shown in layer 2, the data packet becomes It corresponds to the information bit. This data packet is added with status information including an error detection determination result from the decoder 32 and input to the processing circuit 33.

In layer 4, one or more data packets are formed into data groups according to prefixes, and in layer 5, program data is decoded from one or more data groups. The program data is stored in layer 6
Is decoded into the character data, and the display is performed by the display device 34. The character information displayed in the hierarchy 6 is recognized as information as in the hierarchy 7 by recognizing the information on the business side and the user side. The processing operations in the layers 4 to 6 are performed by the processing circuit 33 as follows.

FIGS. 5 and 6 are flowcharts for explaining the processing operation of the processing circuit 33. FIG. 5 is a flowchart showing the receiving operation for each packet. In step S1, the status information added to the data packet is read from the decoder 32. In step S2, it is determined from the status information whether an error has occurred. If an error has occurred, the operation ends without taking in data.
If no error has occurred in step S2, the process proceeds to step S3.

In step S3, the prefix in the data packet is read, and in step S4, it is determined whether the service identification of the prefix is the target service identification. If the service identification is a service identification of a free broadcast or a service identification of the additional information, the program index information, and the operation signal, step S
5, when the service identification is the service identification of the limited broadcast targeted by the own station, the process shifts to step S7. When the service identification is the service identification of the limited broadcast and reserved not targeted by the own station, the data is not taken in. , End the operation.

In step S5, the data block is fetched. In step S6, it is determined whether or not the fetching of one packet has been completed. If not, the process returns to step S5, and the processing returns to step S5. Ends capturing of the data block.

In step S7, even if the service IDs match, it is determined whether or not it is within a predetermined reception permission period as described later. If not, the operation is terminated. Move on to

In step S8, data is fetched in the same manner as in step S5. In step S9, descrambling of the fetched data is performed. In step S10, similar to step S6,
It is determined whether or not the capture of the predetermined data has been completed. If not, the process returns to step S8, thus ending the capture of the data block for one packet.

FIG. 6 is a flowchart showing the display operation of the program data fetched as described above. In step S11, the service identification of the program is determined. In addition,
When the service identification is the additional information, the program index information, and the operation signal, the data of the service identification of the limited broadcast and the reserve which is not related to the program display and which is not targeted for the own station is excluded in advance at the time of reception. In step S11, it is determined from the service identification whether the broadcast is a free broadcast or a limited broadcast targeted for the own station. If the broadcast is a free broadcast, the process proceeds to step S13 to display a program. On the other hand, if the broadcast is a limited broadcast targeted for the own station, the process proceeds to step S12.

In step S12, based on the control information,
It is determined whether or not the program can be displayed even if the limited broadcast is the target broadcast.
Then, the process proceeds to step S14, in which a notification that the program contents cannot be presented is displayed.
The program proceeds to 3 to display a program of the limited broadcast service information.

The limited broadcast data is encrypted,
Unless the encryption method and its decryption key are known, decryption cannot be performed. The specifications are not disclosed, and it is generally difficult to obtain the specifications. Therefore, a receiving terminal for free broadcasting cannot utilize the limited broadcasting data even if it receives the limited broadcasting data.
If the service identification of the limited broadcast is determined in step S4, the limited broadcast data is not taken in and ignored.

When the algorithm of the processing circuit 33 is configured to take in data after descrambling, the order of steps S8 and S9 is reversed. Further, according to the algorithm of the processing circuit 33,
In the case where the data fetching is descrambling, it is determined whether or not the received service information is the receivable service information shown in step S12, and only when this is the case, the data fetching operation after step S8 is performed.

Further, a processing circuit having a descrambling function in step S9 is used as the decoder 32, or a circuit having a descrambling function is inserted between the decoder 32 and the processing circuit 33. If the descrambling process has been completed at the time when the data is taken into 33, the information descrambling process is not performed during the processes such as data group creation, program creation and display from the received data packet. The operation shown in FIG. 5 can be represented as shown in FIG. The operation shown in FIG. 7 is the same as the operation of a normal free broadcast receiving terminal.

In the transmission / reception system for the limited broadcast of the FM multiplex broadcasting configured as described above, the carrier stores the user file 11 and manages each receiving terminal U. With regard to terminal-specific information written in the memory M3 at the time of factory shipment or sales,
First, it will be described in detail. The terminal-specific information is unique information that can be uniquely obtained for each receiving terminal U so that the operator can manage each receiving terminal U. Therefore, as shown in FIG. 8, for example, it can be composed of a company code, a model code, and product information of the receiving terminal.

The company code is a code assigned by a company to each manufacturing company contracted to manufacture a dedicated receiving terminal, and can be represented by a numeral shown in FIG. 9 or an alphabetic character shown in FIG.

The model code is a code arbitrarily set by the business operator or each manufacturing company for each model of each receiving terminal. As in the case of FIGS. 9 and 10, the model code shown in FIG. It can be represented by an alphabetic character such as 12.

Further, the product information is a code assigned to each receiving terminal by each of the manufacturing companies. For example, as shown in FIG. 13, a production location indicating a production country, a production factory, a production line, etc. It is composed of a code, a production lot code indicating production date and lot number, a production serial number code which is a production serial number for each lot, and a code representing other information such as version. Of these codes, the minimum code required to individually identify each receiving terminal, for example, as shown in FIG. 14, a production lot code and a production serial number code are used as the product information.

As shown in FIG. 8, when the product information can specify a manufacturer name or a model name among the three codes constituting the terminal-specific information, any one of them can be specified. Or both may be omitted. Also, if this terminal unique information does not use the number given by the manufacturing company such as the production serial number, but if the company assigns an individual terminal unique number to each manufacturer from the business side, It may be used, or a contract number assigned to each user, for example, may be used.
As described above, the number determined by the business operator may be used. The device-specific information created in this way is
As the number of bits is increased or thinned out,
The data is encrypted with a predetermined bit length, and is commonly stored in the user file 11 on the provider side and the memory M3 in the receiving terminal U.

Next, the reception permission information will be described in detail. The reception permission information includes, as shown in FIG. 15, the reception contract number information of 1 bit and the code ID of n bits.
The information is, for example, 42 bits of information.

As shown in FIG. 16, the reception contract number information is information representing the reception contract number calculated based on the reception fee paid by the user. The user is provided with a reception fee corresponding to the reception permission period desired to receive at the function level of the reception terminal owned by the user, for example, at the time of contract. The example of FIG. 16 shows an example in which the function level of the receiving terminal is a reference value as described later. On the business side, the number of contracts corresponding to the received reception fee is obtained, and the reception contract number information is created. The reception permission period can be set based on the basic contract period A, for example, three months.

At the time of a new contract, the current reception permission period, that is, the number of contracts is 0, and by setting the number of contracts at the time of the contract to a predetermined value, only the number of times corresponding to that number is obtained.
Free reception is possible. In addition, the reception fee may be set in proportion to the reception permission period,
Alternatively, as shown in FIG. 16, a reception fee coefficient B (B = B1, B2,..., Bn, 0 <B) representing a predetermined long-term reception contract discount rate is added to the reception fee C1 corresponding to the basic contract period A.
n ≦... ≦ B2 ≦ B1 = 1). That is, the reception fee Cn at the n ports can be obtained from Cn = Bn × (nxC1) (1).

The code ID information is issuance management information for making it possible to determine before and after the issuance date of the reception permission code, and is composed of, for example, an issuance serial number and information indicating an issuance date.

Using the terminal specific information configured as shown in FIG. 8, the receiving terminal U converts the reception permission information configured as shown in FIG. The decryption is performed, and the reception operation of the limited broadcast is performed only for the reception permission period obtained from the number of reception contracted subscribers. The reception permission period is obtained as follows.

As shown in FIG. 16, the reception permission period W corresponding to the number of reception contracts of n units is n × n in the receiving terminal whose function level is the reference value, where A is the basic contract period which is a contract unit. A is calculated. For the receiving terminal whose function level is not the reference value, the function coefficient D (D = D1, D2, D3, D3) assigned as shown in FIG.
, 1 = D1 ≧ D2 ≧ D3...> 0) to obtain the reception permission period W. That is, W = n × A × D (2)

By using the product of the basic reception contract period A and the function coefficient D instead of the function coefficient D,
These multiplication processes can be omitted.

The function coefficient D is, as shown in FIG.
For example, the function coefficient D1 for the two-line display receiving terminal 1 which is a basic function is set as a reference value of 1, and the function coefficient D2 of the eight-line display receiving terminal and the function coefficient D of the color display receiving terminal 3 are set.
As shown in 3, ..., the smaller the value, the higher the function. In addition, for a receiving terminal dedicated to limited broadcasting of FM teletext broadcasting such as these receiving terminals, for example, a receiving terminal 4 which is a high-performance personal computer peripheral compatible device capable of taking in data to a personal computer. The function coefficient D4 is selected to be a small value such as 1/2 of D1.

The function coefficient D may be set, for example, by setting the receiving terminal having the lowest function to the reference value of 1 as described above, and subtracting a predetermined value as the capability becomes higher. A receiving terminal having an arbitrary function is set to a reference value of 1, and a predetermined value is added to a function coefficient of a receiving terminal having a lower function than that of the receiving terminal, and a predetermined value is subtracted to a receiving terminal having a higher function. You may. In addition, when the function coefficient increases as the function of the receiving terminal increases, the above equation may be expressed as: W = n × A ÷ D (3) In this way, the differentiation between the popular type and the high-end type can be achieved.

Further, the function coefficient D is defined as a basic function coefficient d
1, the additional function coefficient d2, the peripheral function coefficient d3,... D = d1 + d2 + d3 +... (4)

As shown in FIG. 18, the basic function coefficient d1 is, for example, a coefficient d11 of a reference value in two-line display, for example, 0.7, and a coefficient d12 corresponding to a high function such as eight-line display or large-screen display. , D13,... Are set smaller. For example, a two-line display program can be displayed on an eight-line display device, but an eight-line display program cannot be displayed on a two-line display program. The basic function coefficient d1 is set corresponding to the ratio or the like.

Further, as shown in FIG. 19, the additional function coefficient d2 is, for example, a coefficient d2 of a reference value for monochrome two-tone display.
Coefficients d22, d23,... Corresponding to high functions such as color display and projection display are set to 1, for example, 0.2.
Is set smaller as For example, a program with black and white two-gradation display can be displayed on a display device for color display, but a figure such as a weather chart that requires color display cannot be displayed on a display device that can only display black and white with two gradations. The additional function coefficient d2 is set corresponding to the program ratio and the like with reference to the additional function coefficient d21 of the two-tone display, which is the reference value.

Further, the peripheral function coefficient d3 is shown in FIG.
As shown by, the minimum value of the storage capacity of the program buffer defined in advance is set as a reference value coefficient d31, for example, 0.1,
The coefficient d32, d33,... Is set to be smaller as the capacity of the buffer is equal to the capacity of all programs, or is a coefficient d32, d33,... .

As shown in Equation 4, when the function coefficient D is represented by a combination of the basic function coefficient d1, the additional function coefficient d2, and the peripheral function coefficient d3, the function coefficient D corresponds to the receiving terminal having the lowest capability. Function coefficient D1 (= d11 + d
21 + d31) is, as described above, 0.7 + 0.2 +
It is set so that 0.1 = 1.

.. Or d11, d12,...; D21, d22,.
are stored in the memory M3 together with the terminal-specific information.

Further, the receiving terminal U compares the above-mentioned reception permission period with the date information managed by the terminal side to determine whether the reception is permitted / prohibited. Is incorrect, correct permission / prohibition determination control cannot be performed. For example, when the user sets the date information, by improperly setting the old date, it becomes possible for the receiving terminal whose reception permission period has expired to receive the limited broadcast. Also, if incorrect date information is set, the date information will be incorrectly set to exceed the validity period even within the reception permission period. Then, there is a problem that the limited broadcast cannot be received.

Therefore, in the present invention, in order to secure the credibility of the date and time information managed by each receiving terminal U, the date and time information is converted to the date and time information transmitted by FM text multiplex broadcasting. If the receiving terminal U has a calendar function, calibration is performed based on the date information of the FM teletext broadcasting, and the information is set as information that cannot be changed by the user.

The date information transmitted by the FM teletext broadcasting is stored in the data packet of the 13 additional information by the service identification, and is broadcast as time information having a structure as shown in FIG. . This time information is 34-bit data including the modified Julian date (MJD) and the Coordinated Universal Time (UTC).

A method for creating the data MJD in the modified Julian date notation will be described. When the dates to be described are Y, M, and D, respectively, MJD = 14956 + D + int [(YL) × 365.25] + int [(M + 1 + L × 12) × 30.6001] (5) Can be. However, the constant L = 1 in the year of Y = 1 or 2, and L = 0 in the other years.

On the other hand, from the obtained data MJD, first, Y '= int [(MJD-15078.2 / 365.25) (6) M' = int ｛[MJD-14956.1- int (Y ′ × 365.25)] / 30.6001} (7) However, when M ′ = 14 or 15,
K = 1, otherwise, K = 0. From Y ′ and M ′, the date is Y = Y ′ + K (8) M = M′−1−K × 12 (9) D = MJD−14956-int (Y ′ × 365.25) -Int (M '× 30.6001) (10)

The receiving terminal U calculates the date information from the modified Julian date data MJD of the time information, and calculates the hour / minute information from the hour, minute, and local time offset in Coordinated Universal Time. The year, month, day, hour, minute information thus obtained is converted into a data format used by the calendar / clock function of the receiving terminal U, and is stored or set in a calendar / clock circuit.

FIG. 22 is a diagram showing an example of the configuration of data used to realize the calendar / clock function on the receiving terminal U side. On the receiving terminal U side, the calendar / clock data is created as follows. First, the timing of one second is determined by dividing the frequency of a clock signal generated by an oscillation circuit, for example, a clock signal of 32.768 kHz by a frequency dividing circuit, that is, 32.768 kHz.
From 768 = 2 ¹⁵ , the clock signal can be created by dividing the clock signal by a 15-stage divider circuit.

Next, as shown in FIG. 22, the second counter can be realized by a 6-bit cyclic counter of 00 (00h) to 59 (3Bh), and is incremented at the timing of one second. . When the second data is decimal data for display or the like, the second counter is:
A counter for one's digit realized by a cyclic counter of 0 to 9; and 0 to 5 incremented when the carry of the one's digit counter is changed (1's digit changes from 9 to 0).
And a cyclic counter for the tens digit.

The minute counter is also similar to the second counter.
It can be realized by a 6-bit cyclic counter, and when this data is used in decimal, 1
, And 0 to 5 cyclic counters for the tens digit.

The hour counter is, for example, a 5-bit 0 (0
0h) to 23 (17h), which are incremented when the tens digit counter of the minute counter changes from 5 to 0 (carry). Further, for example, a combination of a 1-bit am / pm determination bit and a 4-bit cyclic counter of 0 (00h) to 11 (0Bh) or a decimal counter capable of counting 0 to 23 may be used. A counter corresponding to a display format such as morning / afternoon or 12 hours / 24 hours may be used.

The date counter can be realized by a cyclic counter which starts counting from 1 (01h) and can change the upper limit by the date information.
It is incremented when the hour counter changes from 23 (17h) to 0 (00h). The upper limit is 28 (1Ch) for February excluding leap years, and 29 (1D) for February in leap years.
h) The remaining small months other than February are set to 30 (1Eh), and the large months to 31 (1Fh). Also, by setting the count value of this date counter to 0,
It can be used as a detection status code that the date has not been set.

The day of the week counter is usually 0 to 6 or 1 to
7 can be realized by associating each day with each count value, for example, 0 is Sunday, 1 is Monday, and so on.
The increment timing is the same as that of the date counter.

In this day counter, 0 can be used as an unset detection state code. In this case, the count value is 1 to 7.

The month counter is 1 (01h) to 12 (0C
h) can be realized by a cyclic counter, which is incremented when the date counter changes from the upper limit to one. Also, this month counter can use 0 as an unset detection status code.

The year counter is a counter of a value excluding the thousands place of the year, and can be realized by a three-digit decimal counter, and is incremented when the month counter changes from 12 to 1. .

These counters are calibrated with the time information shown in FIG.

The processing circuit 33 makes a comparison between the date, month, day, hour, minute, and second information obtained by the counter as described above and the reception permission period at which the reception permission period ends. As a permission flag, the memory M
Store it in 3. The comparison and determination process is performed when the power of the receiving terminal U is turned on, when reception is started, when a program is displayed, and every minute, every hour,
It is performed when the clock is updated every day. When the limited broadcast is received, the determination in step S7 is performed with reference to the limited broadcast reception permission flag. When the date information obtained from the counter has passed the reception permission period, the reception permission flag is set to a reception prohibited state. In addition,
The reception permission flag is set to a reception prohibition state in an initial state such as factory shipment or sales, and in accordance with this, the reception permission expiration date is set to a date before the manufacturing date of the reception terminal U or Is set to a date that does not actually exist.

When a limited broadcast reception permission code is input, the limited broadcast reception permission flag may be temporarily set in a receivable state, and the comparison determination may be performed at the time of updating the clock, displaying a program, or the like. When the actual date information can be immediately obtained, a comparison is made between the reception permission expiration date, which is the end of the reception permission period obtained from the reception contract number information of the input reception permission code, and the date information. You may.

As a result, when the reception permission code is input, the reception is enabled immediately, and when the correct reception permission code is set, the reception can be continuously performed.

Once the limited broadcast reception permission flag has been disabled, the limited broadcast reception permission flag remains set until a reception permission code is input again.
The flag is held in a prohibited state. In the initial state, an initial state flag that is reset when a reception permission code is input is separately set. In the initial state, reception of the limited broadcast is prohibited, or when a program is displayed, the reception permission code is set. Not displayed "or the like.

When the limited broadcast reception permission flag is not used in the processing circuit 33, for example, the reception contract number information is 0 and the reception permission period is set together with the state in which the reception permission period has elapsed. By prohibiting the reception of the limited broadcast even when it is not performed, the same effect can be obtained even if the comparison of the reception permission period is performed every time the calendar information is updated without using a dedicated flag. it can.

FIGS. 23 and 24 are flowcharts for explaining an example of a procedure for creating and decoding a reception permission code applied to the FM text multiplex broadcast limited broadcast transmission / reception system configured as described above. . FIG.
This shows a procedure for creating a reception permission code, and is performed in response to a notice of payment of a reception fee from a financial institution, a contract application from a user, or the like, at the workstation or the like on the business side.

As described above, on the business side, FIG.
Terminal unique information as shown in FIG. 8 is created based on information unique to each receiving terminal U as shown in FIG. 14 and stored in the user file 11.

On the other hand, based on the received reception fee, FIG.
Are read from the user file 11 and the reception permission information is created based on them as shown in FIG. To this, an error detection code such as a CRC (Cyclic Redundancy Check) code is added.

The reception permission information to which the error detection code is added is combined with the terminal-specific information to create a reception permission code. This reception permission code is, for example, 48
It is a code composed of 12 hexadecimal digits, each of which is a 4-bit hexadecimal number with one digit of 0h to Fh. The reception permission code is notified to the user through postal mail, personal computer communication, data communication from a business operator using a telephone line, and the like.

The reception permission information to which the error detection code is added and the terminal-specific information are combined, for example, by using the terminal-specific information as an initial value of a predetermined random number generation circuit and generating the information by the random number generation circuit. The random number pattern and the reception permission information having the error detection code may be combined by, for example, obtaining an exclusive OR, or the terminal unique information and the reception permission information having the error detection code may be combined. Alternatively, they may be directly combined. The reception permission code thus obtained is a code dedicated to each reception terminal U.

FIG. 24 shows a procedure for decoding the reception permission code, which is performed in response to the input of the reception permission code from the input device 35 by the user. Processing circuit 3
When the reception permission code is input, the memory M3
Is read, and the signal processing reverse to that at the time of the combination shown in FIG. 23 is performed to decode the reception permission information having the error detection code. Error detection is performed on the decoded reception permission information using the error detection code, and when an error is detected, error processing such as generation of an error sound or error display is performed, and the user is notified of the error. When no error is detected, the decoded reception permission information is decoded by the processing circuit 33 as described below.

Therefore, when the correct reception permission code is input by the user, the reception permission information is set without any error. When an incorrect reception permission code is input, for example, when the reception permission code is input, it is determined that there is an error.

Code I of reception permission code used last time
The D information is stored in the memory M3 together with the reception contract number information, and when the correct reception permission information is input, the processing circuit 33 first inputs the code from the code ID information to the current reception permission code more than the previously used reception permission code. If the received permission code is new, the input is made valid, and if it is old, the input is made invalid, and error processing such as generation of the error sound and error display is performed.

For example, when the code ID information indicates the serial number of the reception permission code as described above, it is determined that the current code ID information is valid when the code ID information is larger than the previous code ID information, and Invalid if smaller. When the code ID information indicates the issue date, the case where the issue date of the current code ID information is newer than the issue date of the previous code ID information is valid, and the same or previous issue date is effective. If it is, it is invalid.

When the input reception permission code is a new reception permission code, the code ID information stored in the memory M3 is updated to that of the new reception permission code, and from the reception contract number information according to the above equation (2). A reception permission period W is required.

When the reception permission period T0 of the receiving terminal U has expired with respect to the reception permission period W thus obtained, the reception permission period W is added to the current calendar information DATE as in the following equation. Thus, a new reception permission period T1 is obtained. T1 = W + DATE (11)

On the other hand, the current reception permission time limit T0
Is not expired, the reception permission period W is added to the reception permission period T0, and a new reception permission period T1 is added.
Is required. T1 = T0 + W (12)

The reception permission period T thus obtained is
1 is stored in the memory M3. In this way, the receiving operation of the targeted limited broadcast can be performed within the reception permission time limit T1 and at the set function level.

As described above, the processing circuit 33 includes the memory M3
Performs an operation corresponding to the function coefficient D stored in the memory M3. By changing the function coefficient D stored in the memory M3 and at least the display device 34, a receiving terminal having a different function level can be realized. The function of each receiving terminal can be differentiated while sharing parts.

The reception permission information includes the reception contract number information and the code I which is the reception management information of the reception permission code.
D information is added, and even if a new reception permission code is input from the input device 35, the processing circuit 33
If the received permission code is already registered from the code ID information, the received permission code does not set the reception permitted period determined from the number of contracts received by the reception permission code. This can prevent a problem that the reception permission period is extended.

Further, since the reception permission information is not transmitted to each receiving terminal U using the broadcast wave of the FM teletext broadcasting but is transmitted using the postal mail or the personal computer communication, the transmission capacity of the limited broadcast is transmitted. Can be provided, and more service information or more reliable service information can be provided. Even if the user sets the reception permission code in this way, an error detection code is added to the reception permission information, and erroneous input can be reliably prevented. In addition, the reception permission information is encrypted using terminal-specific information, and it is difficult for a user to enter an accurate reception permission code even if the user tries to use it illegally. Only the reception permission code can be accurately received. For example, forgery of the reception permission code such as diverting the reception permission code to another receiving terminal can be prevented, and high security can be ensured.

Further, for decoding the reception permission information from the reception permission code, a processing circuit 33 for decoding limited broadcast data of FM teletext broadcasting to form character data is used. Also, by using the input device 35 realized by a key switch for channel selection, volume control, etc., the number of parts does not increase with respect to a normal FM teletext receiving terminal, and therefore the cost is reduced. The rise can also be suppressed.

FIG. 2 shows a second embodiment of the present invention.
The description based on No. 5 is as follows.

In the above-described first embodiment, the same limited broadcast, that is, the same program is received at different function levels, whereas in the second embodiment, a common receiving terminal uses: A plurality of programs can be received. Therefore, a service coefficient E corresponding to a service identification SI of a program is used as shown in FIG. Service coefficient E of the program whose service identification SI is si1
Assuming that 1 is the reference value of 1, E2,
The service coefficient E is set to a large value, such as E3.

The service coefficient E is used to select a receivable broadcast from a plurality of types of limited broadcasts, as can be used in the determination in step S12 in FIG.
The present invention can be used to select a receivable broadcast by time zone or a receivable broadcast by program classification.

Using the service coefficient E stored in the memory M3, the processing circuit 33 determines the number of received contracted units n obtained from the information on the number of received contracted units decoded from the input reception permission code, and Using the reception contract period A, the reception permission period W is calculated from W = n × A / E (13).

For an arbitrary service identification sin, the service coefficient En can be obtained from En = (reception fee for service n / reception fee for service 1) × E1 (14).

When the program with the highest reception fee is set to the reference value 1 as the service coefficient E, and the service coefficient E is set to be smaller as the reception fee becomes lower, the above equation is used instead of division. , The reception permission period W can be similarly calculated. When a plurality of programs with service identifications can be received, similarly to the function coefficient D, the service coefficient E may be the sum of the service coefficients. In this way, the reception permission period W can be shortened as the reception fee increases, even for the same reception contract number n.

Further, in the case where the reception fee is discounted by receiving a plurality of programs with service identification, for example, the service coefficient of the program with the lowest or highest reception fee is excluded and the service coefficient is added. By performing or subtracting a value proportional to the selected service from the sum of all service coefficients, a service coefficient corresponding to the discount rate can be obtained. Further, the setting of a new service coefficient by changing the ratio between the service coefficients or by abolishing or newly adding a service can be performed for each receiving terminal U using the additional information or the like.

A third embodiment of the present invention will be described below.

In the third embodiment of the present invention, the program selection and the function selection can be finely performed by combining the first and second embodiments. Therefore, the function coefficient D stored in the memory M3 (for example, d1 + d
2) and the service coefficient E (for example, E1 + E2), the reception permission period W is obtained as follows.

First, the reception permission period W 'is obtained from the function coefficient D in the same manner as in the equation (2) from the following equation: W' = n × A × D (15) Next, the actual reception permission period W is obtained from W = W '/ E (16).

It is needless to say that W = n × A × D / E (17) may be directly obtained.

[0143] When broadcasting a plurality of service-identified programs as described above, if the reception fee is not collectively set for each program and each program is provided by an independent business operator, The reception fee collected collectively from the above may be distributed to the respective operators according to the service coefficient E.

In this case, however, it is necessary for the business operator to know the programs that can be received by each receiving terminal U. The user file 11 contains information on each user and terminal-specific information in the user file 11. The service identification of the currently receivable program is also stored. In this case, the reception permission period is managed assuming that the function of the receiving terminal U is the same, that is, there is no change.

If a plurality of programs can be received as described above, a request for changing the received program may be issued. Further, when the total value of the service coefficient E changes, the reception permission period also changes. The new reception permission period Tnew is obtained as follows.

First, assuming that the current reception permission expiration date obtained as shown in the above formula 11 or 12 is Told and the current calendar information DATE, the remaining reception permission period Wold1 is expressed as follows: Wold1 = Told−DATE ... (18) In addition, based on the total value Eold of the current service coefficients, the remaining reception permission period Wold2 when only the E1 program whose service coefficient is the reference value is received.
Is required.

Wold2 = Wold1 × Eold (19)

Therefore, when the total value of the service coefficients of the new program is set to New, this remaining reception permission period W
From old2, a new reception permission period Wnew can be obtained from Wnew = Wold2 / Enew (20). Therefore, a new reception permission time limit Tnew can be obtained from Tnew = Wnew + DATE (21) in the same manner as in Expression 11.

Note that the remaining reception permission period Wold2 is divided by the basic reception contract period A to obtain the number of remaining contracted units n ', and the remaining number of contracted units n' is used as shown in the above equation 13 to obtain the number of received contracted units n '. The permission period Wnew may be obtained.

Referring to the fourth embodiment of the present invention, FIG.
6 and FIG. 27 are as follows.

When a program with a different service identification SI is received as described above, if the configuration of the receiving terminal U is compatible, a request to change the received program occurs without changing the receiving terminal U. There is. Therefore, in the fourth embodiment, at the time of the change, the user is notified of the reception permission code created by using the reception permission information as shown in FIG. The reception permission information includes the service coefficient E stored in the memory M3. For example, the m-bit limited reception operation control information includes the n-bit code ID.
The information is added.

As shown in FIG. 27, when the user is notified of the change of the service content from the user, the conditional access control information indicating the service coefficient after the change and the code ID
The reception permission information is created using the information and the reception permission information. After an error correction code is added to the reception permission information as shown in FIG. 23, the reception permission information is encrypted with the terminal-specific information to generate a reception permission code. . The reception permission code is notified to the user by mail or the like, and the user
24, the decoding process is performed as shown in FIG. 24, and when there is no error, a broadcast with a new service identification is set as the target broadcast.

The reception permission information shown in FIG. 26 accompanying the change of the reception program and the reception permission information indicating the number of reception contracts accompanying the payment of the reception fee shown in FIG. 15 are encrypted into a reception permission code. In doing so, an identification code is added and these can be shared. When there is room in the number of bits of the reception permission information, as shown in FIG. 28, one reception permission information may be configured including the reception contract number information and the limited reception operation control information. . In this case, even if the reception program is changed and the reception fee is paid at the same time, only one reception permission code needs to be issued.

At this time, a reception permission period W + corresponding to the added reception contracted number n + is obtained by substituting the basic value E1 as the service coefficient E in the above equation 13, and this additional reception permission period W + is obtained by the above equation. By making the value added to the remaining reception permission period Wold2 of 20 the updated value of the remaining reception permission period Wold2, it is possible to calculate the reception permission period Tnew corresponding to the change of the program and the transfer of the reception fee. .

The fifth embodiment of the present invention will be described below.

When a reception contract is made with a limited budget in advance, the reception permission period W can be calculated by the procedure of the second embodiment, but the desired reception permission period W
In order to obtain the number of reception contracts n corresponding to the above, each user calculates the required number of reception contracts n from the desired reception permission period W, and according to the number of reception contracts n, FIG. It is necessary to obtain and transfer the reception fee from the fee table shown in. For this reason, in the fifth embodiment, when the contracted number calculation mode is set from the function setting key of the input device 35, the processing circuit 33 suspends the normal program receiving operation and sets the required number of received contracted numbers. This is the calculation mode for n.

When the desired reception permission period W is input from the input device 35 in the calculation mode, the processing circuit 33
Calculates the required number of reception contracts n using the function coefficient D and the basic reception contract period A stored in the memory M3 as follows: n = W / (A × D) (22) In addition, when a fraction arises, carryover is performed. The calculated reception contract number n is the same as the display device 3
4, if the receiving terminal U has a configuration for printout, the printout may be performed.

As a result, the number of reception contracts n corresponding to the function level of the reception terminal U owned by the user and the desired reception permission period W can be easily obtained without performing a complicated operation using a comparison table or the like. be able to.

Similarly, the desired reception permission period W
And the service coefficient E of the program desired to be received, the required number of reception contracts n can be obtained by n = W × E / A (23).

Further, as shown in the third embodiment, when both the function coefficient D and the service coefficient E are set, the required number of reception contracted units n is n = W × E / (A × D) (24)

[0161] At least one of the terminal-specific information and the reception permission information may be encrypted. In this case, the encryption process may be performed, for example, by rearranging the data strings of the terminal-specific information and the reception permission information in a predetermined order, or by using a pattern generated by a PN code generation circuit, which is a predetermined random number generation circuit. Any method may be used as long as the reception permission information cannot be easily determined from the reception permission code.

With this configuration, the terminal-specific information is created based on information that can be known by the user, such as the product number, and the error detection code such as the CRC code is decoded. However, correct reception permission information cannot be decrypted, confidentiality can be improved, and unauthorized use can be more reliably prevented.

The same effect can be obtained in the encryption processing of the reception permission information even after the error detection code is added. However, if the error detection code is added after the reception permission information is encrypted as described above, the decoding is performed after the error determination, and the erroneous input determination of the reception permission code can be quickly performed. .

The present invention is not limited to FM teletext limited broadcasts, but is also suitable for other multiplex broadcasts such as teletext television broadcasts, which provide service information using gaps in broadcast waves. Can be implemented. When the transmission medium having a large transmission capacity is used and the transmission capacity of the multiplexed data has a margin, the reception contracted number information and the limited reception operation control information are transmitted to the reception terminal U by using a broadcast wave. Then, it may be set. As a result, accurate settings can be made, and unauthorized use can be reliably prevented.

[0165]

As described above, the service information receiving apparatus according to the first aspect of the present invention is a service information receiving apparatus suitably implemented as an FM teletext limited broadcast receiving apparatus or the like. A function coefficient corresponding to the function level of the device is stored in the storage means, and the control means causes the reception means to receive the service information at the function level corresponding to the function coefficient stored in the storage means, and display the service information. Causes the means to display output.

Therefore, for example, when the reproduction level is different for the same program, display of service information that does not match the function level of the receiving apparatus is prevented, and the service information is stored in at least the storage means together with the display means. With a slight change in the configuration just by changing the function coefficient, it is possible to accurately display and output the service information of the function level corresponding to the reception fee.

According to the second aspect of the present invention, the service information transmitting / receiving apparatus receives the reception fee received from each user on the side of the business operator, as compared with the receiving apparatus according to the first aspect. Converted to the number of contracts, create a reception permission code for the number of units and notify the user.
Upon receiving the notification of the reception permission code, the reception permission code decoding means calculates the reception permission code using a function coefficient indicating the function level of the receiving device, and calculates a reception permission period.

Therefore, the reception permission period can be appropriately set in the receiving device according to the reception fee received from the user and the function level of the receiving device.

Further, the service information receiving apparatus according to the third aspect of the present invention is a service information receiving apparatus suitably implemented as an FM character multiplex broadcast limited broadcast receiving apparatus as described above. A service coefficient corresponding to the reception fee of the type of service information receivable by the receiving device is stored in the storage unit, and the control unit receives the type of service information corresponding to the service coefficient stored in the storage unit. Means for receiving and displaying on the display means.

[0170] Therefore, a plurality of types of service information can be appropriately selected and received in accordance with the reception fee by a common receiving device.

According to the fourth aspect of the present invention, the service information transmitting / receiving apparatus receives the reception fee received from each user on the side of the business operator, as compared with the receiving apparatus according to the third aspect. Converted to the number of contracts, create a reception permission code for the number of units and notify the user.
Upon receiving the notification of the reception permission code, the reception permission code decoding means decodes the reception permission code using a service coefficient indicating the type of service information that can be received by the receiving apparatus, and performs a reception permission period. Is calculated.

[0172] Therefore, only the target type of service information from the plurality of types of service information can be accurately received for a period commensurate with the reception fee.

Furthermore, the service information receiving apparatus according to the fifth aspect of the present invention is a service information receiving apparatus suitably implemented as an FM character multiplex broadcast limited broadcast receiving apparatus as described above. A function coefficient corresponding to the function level of the receiving device and a service coefficient corresponding to the reception fee of the type of service information receivable by the receiving device are stored in the storage unit, and the control unit is stored in the storage unit. The receiving means receives the service information of the type corresponding to the service coefficient at the function level corresponding to the function coefficient, and causes the display means to display and output the service information.

Therefore, with a common receiving device, a slight change in the configuration that only changes the function coefficient and the service coefficient stored in the storage means allows a plurality of types of service information to be obtained.
The service information corresponding to the reception fee can be selected and displayed at a function level commensurate with the reception fee.

According to a sixth aspect of the present invention, the service information transmitting / receiving apparatus receives the reception fee received from each user on the business side with respect to the receiving apparatus according to the fifth aspect. Converted to the number of contracts, create a reception permission code for the number of units and notify the user.
Upon receiving the notification of the reception permission code, the reception permission code decoding unit calculates the reception permission period using the function coefficient and the service coefficient of the receiving device.

Therefore, from a plurality of types of service information,
Only the target type of service information can be accurately received for a period corresponding to the type of the service information and the function level of the receiving device with respect to the reception fee.

Further, the service information transmitting / receiving apparatus according to the present invention sets the reception permission period for each function level of the receiving apparatus and / or for each type of service information to be received. Instead, set the reception permission period collectively, and when a change in the type of service information to be received is input, the remaining contracted number of units is calculated using the remaining reception permission period and the current service coefficient Then, a new reception permission period is calculated for the remaining number of contracts using the service coefficient after the change, and is set in the control means.

Therefore, since the receiving apparatus side automatically calculates and sets the common receiving permission period in accordance with the number of receiving contracts, changes such as adding or deleting service contents during the contract as described above are made. In addition, it is possible to easily respond to a change in the reception fee. In such a change, it is only necessary to change the storage contents of the storage means, and it is possible to eliminate the change of hardware.

Further, the service information transmitting / receiving apparatus according to the eighth aspect of the present invention calculates the required number of contracted units when the reception permission period desired by the user is input as described above, and displays and outputs the number. I do.

Therefore, the user does not need to perform complicated work of calculating the reception fee, such as comparing the fee table, when paying the reception fee, and the convenience can be improved.

Furthermore, the service information transmitting / receiving apparatus according to the ninth aspect of the present invention provides the reception permission code as described above, the reception contract number information, and the issue management information capable of determining before and after the issue date. And

Therefore, even if the reception permission code used once is used again and input again at a later date, the reception permission code is updated from the currently registered reception permission code based on the issuance management information. It is possible to determine whether the received permission code is valid or not, and by re-entering the reception permission code that has been used once, it is possible to prevent unauthorized use such as substantially extending the reception permission period.

Further, the service information transmitting / receiving apparatus according to the tenth aspect of the present invention, as described above, configures the reception permission code into reception permission information based on the reception contract number information and the issuance management information. After adding the error correction code to the permission information, the permission information is encrypted with terminal-specific information unique to each of the receiving apparatuses to be created.

Therefore, the reception permission information can be decrypted only when the terminal-specific information set in each reception apparatus matches, whereby the reception permission code is diverted to another reception apparatus. Can be prevented. Also, instead of setting the reception permission code in each receiving device using a broadcast wave, the reception permission code is given to a user by mail or the like, and even if the user inputs it from input means, If the correct reception permission code is not input, the reception permission information cannot be correctly decoded, thereby preventing erroneous input.

[Brief description of the drawings]

FIG. 1 is a system configuration diagram of a limited broadcast of FM teletext broadcasting according to an embodiment of the present invention.

FIG. 2 is a diagram showing an operation flow of limited broadcast of FM teletext broadcasting of the present invention.

FIG. 3 is a diagram showing a data structure of FM teletext broadcasting.

FIG. 4 is a diagram for explaining a hierarchical structure of the data.

FIG. 5 is a flowchart illustrating an example of an operation of capturing program data for each received packet.

FIG. 6 is a flowchart showing an operation of displaying captured program data.

FIG. 7 is a flowchart showing another example of the operation of capturing program data for each received packet.

FIG. 8 is a diagram showing an example of terminal-specific information used in the present invention.

FIG. 9 is a diagram showing an example of a company code constituting the terminal-specific information and given to a manufacturer of each receiving terminal.

FIG. 10 is a diagram showing another example of a company code constituting the terminal-specific information and given to a manufacturer of each receiving terminal.

FIG. 11 is a diagram showing an example of a model code assigned to each model of each receiving terminal in the terminal-specific information.

FIG. 12 is a diagram showing another example of a model code assigned to each receiving terminal in the terminal-specific information.

FIG. 13 is a diagram showing an example of product information given to each receiving terminal in the terminal-specific information.

FIG. 14 is a diagram showing another example of the product information given to each receiving terminal in the terminal-specific information.

FIG. 15 is a diagram showing an example of the structure of reception permission information indicating reception permission in a reception permission code given from a business to a user.

FIG. 16 is a table showing the relationship between the number of reception contracts that the user applies for at the time of contract or renewal, the reception permission period, the reception fee coefficient, and the reception fee.

FIG. 17 is a table for explaining a function coefficient indicating a function level of each receiving terminal.

FIG. 18 is a table for explaining a specific example of a basic function coefficient which is one component of the function coefficient when the configuration of the function coefficient is subdivided.

FIG. 19 is a table for explaining a specific example of an additional function coefficient which is another component of the function coefficient when the configuration of the function coefficient is subdivided.

FIG. 20 is a table for explaining a specific example of a peripheral function coefficient which is another component of the function coefficient when the configuration of the function coefficient is subdivided.

FIG. 21 is a diagram showing a data structure of time information transmitted by FM teletext broadcasting.

FIG. 22 is a diagram illustrating a configuration example of data for a calendar / clock function in each receiving terminal.

FIG. 23 is a diagram showing an example of a procedure for creating a reception permission code using the reception permission information.

24 is a diagram showing a procedure for decoding the reception permission code created as shown in FIG.

FIG. 25 is a table for explaining service coefficients for each program for which a reception fee is individually set.

FIG. 26 is a diagram showing the structure of reception permission information given from a business to a user when a received program is changed.

FIG. 27 is a diagram showing an operation flow when the received program is changed.

FIG. 28 is a diagram showing the structure of reception permission information that allows the change of the reception program and the change of the reception permission period corresponding to the payment of the reception fee.

[Explanation of symbols]

 Reference Signs List 1 stereo sound signal source 2 stereo modulation circuit 3 FM modulation circuit 4 transmission circuit (transmission means) 6 service information source (information creation source) 11 user file 12 processing circuit (reception permission code creation means) 13 keyboard 14 display device 15 printing Apparatus 22 receiving circuit (receiving means) 23 FM demodulation circuit 24 stereo demodulation circuit 31 filter 32 decoder 33 processing circuit (reception permission code decoding means) 34 display device 35 input device (input means) M1 memory M2 memory M3 memory (storage means) U0 FM broadcasting station (operator) U1, U2,... Receiving terminal (receiving device)

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Katsuhiro Tochihara, Inventor 22-22, Nagaikecho, Abeno-ku, Osaka, Osaka Inside (72) Inventor Kozo Hayashi 22-22, Nagaikecho, Abeno-ku, Osaka, Osaka (72) Inventor Kazuhiro Kishimoto 22-22 Nagaikecho, Abeno-ku, Osaka-shi, Osaka

Claims (10)

[Claims] 1. A receiving apparatus which enables limited reception of service information having a plurality of levels of function levels transmitted from an operator side only by a predetermined receiving apparatus, and which corresponds to the function level of the receiving apparatus. Storage means for storing a function coefficient; reception means for receiving the service information; display means for performing display output in response to an output of the reception means; and a function corresponding to the function coefficient stored in the storage means Control means for causing said receiving means to receive service information at a level. 2. The transmitting device on the business side transmits an information generating source of service information to be transmitted and service information generated by the information generating source to the receiving device according to claim 1. From the transmission means and the reception fee received from each user, calculate the number of reception contracts, create a reception permission code corresponding to the number,
A receiving permission code creating means for assigning the receiving permission code to a user of the receiving apparatus that should be able to receive the limited reception, the receiving apparatus further comprising: input means for inputting the receiving permission code; A service information transmitting / receiving apparatus comprising: a reception permission code decoding unit that calculates a permission code and a function coefficient stored in the storage unit, calculates a reception permission period, and sets the reception permission period in the control unit. . 3. A method of receiving a plurality of types of service information transmitted from an operator side, for which a reception fee is individually set, by only a predetermined receiving device and capable of limited reception of only a desired type of service information. A storage unit for storing a service coefficient corresponding to a reception fee of a type of service information receivable by the receiving device; a receiving unit for receiving the service information; and a response to an output of the receiving unit. A service information receiving apparatus, comprising: display means for performing display output; and control means for causing a receiving means to receive service information of a type corresponding to a service coefficient stored in the storage means. 4. The receiving apparatus according to claim 3, wherein the transmitting apparatus on the business side transmits an information generation source of service information to be transmitted and service information generated by the information generation source. From the transmission means and the reception fee received from each user, calculate the number of reception contracts, create a reception permission code corresponding to the number,
A receiving permission code creating means for assigning the receiving permission code to a user of the receiving apparatus that should be able to receive the limited reception, the receiving apparatus further comprising: input means for inputting the receiving permission code; A service information transmitting / receiving apparatus, comprising: a reception permission code decoding unit that calculates a permission code and a service coefficient stored in the storage unit, calculates a reception permission period, and sets the reception permission period in the control unit. . 5. A plurality of types of service information transmitted from the business side, each having a plurality of function levels, and for which a reception fee is individually set, can be obtained only by a predetermined receiving device and by a desired type of service information. A receiving device that enables limited reception of only service information at a desired function level, wherein a reception coefficient of a function coefficient corresponding to the function level of the receiving device and a reception fee of a type of service information receivable by the receiving device are included. Storage means for storing a corresponding service coefficient; receiving means for receiving the service information; display means for performing a display output in response to an output of the receiving means; corresponding to the service coefficient stored in the storage means Control means for causing receiving means to receive service information of the specified type at a function level corresponding to the function coefficient. . 6. The transmitting device on the business side transmits an information generating source of service information to be transmitted and service information generated by the information generating source to the receiving device according to claim 5. From the transmission means and the reception fee received from each user, calculate the number of reception contracts, create a reception permission code corresponding to the number,
A receiving permission code creating means for assigning the receiving permission code to a user of the receiving apparatus that should be able to receive the limited reception, the receiving apparatus further comprising: input means for inputting the receiving permission code; Service information comprising: a permission code, a function coefficient and a service coefficient stored in the storage means, a reception permission code decoding means for calculating a reception permission period and setting the reception permission period in the control means. Transmission and reception equipment. 7. The receiving permission code decoding means of the receiving device, when a change in the type of service information to be received is input from the input means, uses a remaining reception permission period and a current service coefficient. 7. The method according to claim 4, wherein the remaining number of contracted units is calculated, and a new reception permission period is calculated for the remaining number of contracted units using the service coefficient after the change, and is set in the control unit. A device for transmitting and receiving service information. 8. The reception permission code decoding means of the reception device, when a reception permission period desired by a user is inputted from the input means, the function coefficient and / or the storage means stored in the storage means. 8. The service information transmitting / receiving apparatus according to claim 2, wherein a required number of contracts is calculated using a service coefficient, and the calculated number is displayed on the display unit. 9. The reception permission code according to claim 2, wherein said reception permission code includes reception contract number information and issuance management information capable of determining before and after the issuance date. A transmission / reception device for service information according to any of the above. 10. The reception permission code comprises reception permission information based on the reception contract number information and the issuance management information, and after an error correction code is added to the reception permission information, a terminal unique to each reception apparatus. The service information transmitting / receiving apparatus according to claim 9, wherein the service information transmitting / receiving apparatus is created by being encrypted with the unique information.