JP3624968B2 - Data receiving apparatus, data receiving method, data recording / reproducing apparatus, and data recording / reproducing method - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a recording medium having a read-only area where only information can be read and a read / write area where both information can be written and read.UsedData receiving apparatus and data receiving method,AnddataRecordPlayback device and dataRecordIt relates to a reproduction method.
[0002]
[Prior art]
For example, terrestrial television broadcasts can usually be viewed free of charge because they have a sponsor. On the other hand, there are an increasing number of pay broadcasts such as satellite broadcasting and CATV (CAble TeleVision) that cannot be viewed without paying a predetermined reception fee. In such a pay broadcasting system, a program (video and audio) is scrambled and broadcast, thereby preventing unauthorized reception of the program without paying a reception fee.
[0003]
In other words, a key is necessary to unscramble, and this key is given only to the contractor. However, if this key is fixed, it may be decrypted and illegally received, so the key is changed regularly or irregularly. When the key is changed, the contractor needs to be given the key after the change. For example, the module that stores the key in the decoder is changed to the one that stores the key after the change. By exchanging, correspondence by changing the key is taken.
[0004]
[Problems to be solved by the invention]
By the way, as a service using television broadcasting by terrestrial broadcasting, there is a text multiplex broadcasting that superimposes and broadcasts data during the blanking period of the video signal. Broadcasting services to be transmitted are considered. As a service form of such data broadcasting, for example, data is transmitted in a time zone where character multiplex broadcasting or the like is not performed, and the receiving side receives the data and records it on a recording medium. In this case, when the user desires, the data can be viewed by reproducing the data from the recording medium.
[0005]
Now, when this data broadcast is performed as a pay broadcast, as a method for preventing unauthorized reception, a method in which a key is stored in a contractor and reception of data is permitted by using the key as in the case described above. Can be considered. In this case, the module stores keys, and the above-described recording medium stores data. Therefore, it is convenient if these can be shared by one recording medium.
[0006]
That is, it is convenient if the key is recorded on the recording medium and the data is recorded on the recording medium. Therefore, as this recording medium, there is a method of using a magnetic disk such as a floppy disk or a hard disk capable of reading and writing data. However, with a floppy disk or hard disk, there is a risk that the key may be illegally decoded, and it is difficult to ensure security. Further, in a recording medium such as a floppy disk or a hard disk on which data can be read and written, a key recorded on the recording medium may be mistakenly erased, making it impossible to view the data. Thus, for example, there is a method using a CD-ROM as a recording medium, but the received data cannot be written to the CD-ROM.
[0007]
The present invention has been made in view of such a situation, and is intended to improve the convenience of a recording medium.
[0010]
[Means for Solving the Problems]
Claim1In the data receiving device described in 1), the recording medium has a read-only area where only information can be read and a read / write area where both information can be written and read.IsReceiving information for permitting predetermined processing is recorded, and receiving means for receiving the data and the predetermined key when the data is transmitted together with the predetermined key;Receiving meansDetermining means for determining whether or not the predetermined key received by the key matches the permission information recorded in the read-only area;,Received by the receiving means only when the judging means judges that the predetermined key and the permission information match.Corresponding to a given keyRecord data in the read / write areaRecording control meansIt is characterized by that.
[0011]
Claim2In the data receiving method described in 1), the recording medium has a read-only area where only information can be read and a read / write area where both information can be written and read.IsPermission information for permitting predetermined processing is recorded, and when data is transmitted together with a predetermined key, the data and the predetermined key are received and recorded in the predetermined key and the read-only area. Only when the given key matches the permission information,Corresponding to a given keyData is recorded in a read / write area.
[0012]
Claim3Data described inRecordPlayback deviceDetermination for determining whether data and a predetermined key corresponding to the data match, and whether the predetermined key received by the reception means matches the permission information recorded in the read-only area of the recording medium And a recording control unit for recording data corresponding to the predetermined key received by the receiving unit in the read / write area of the recording medium when the unit and the determining unit determine that the predetermined key and the permission information match.Entered the giveninputDetermine whether the key matches the permission information recorded in the read-only areainputJudgment means,inputBy the judging means, a predeterminedinputReads data recorded in the read / write area only when it is determined that the key and permission information match.Read control meansIt is characterized by that.
[0014]
Claim4Data described inRecordPlayback method isThe data and a predetermined key corresponding to the data are received, it is determined whether the predetermined key matches the permission information recorded in the read-only area of the recording medium, and the predetermined key matches the permission information. Only when the data corresponding to the predetermined key is recorded in the read / write area of the recording medium,PredeterminedinputWhen a key is entered, its predeterminedinputDetermine whether the key and the permission information recorded in the read-only area match.inputOnly when the key and the permission information match, the data recorded in the read / write area is read.
[0019]
Claim5The data receiving device described inData and a provider identification ID for identifying the provider of the data;Receiving means for receivingDetermination means for determining whether the provider identification ID and the provider identification ID recorded in the read-only area of the recording medium match, and the provision ID recorded in the read-only area by the determination means When it is determined that the person identification ID matches,Recorded in the read-only areaRecordableReading means for reading the number of times,Read by reading meansRecordableDepending on the number of timesRecording mediaRecord in the read / write areaRecording control meansIt is characterized by that.
[0020]
The receiving means can further receive a data identification ID for identifying data. In this case, the recording control means can update the recordable number of times according to the change of the data identification ID.
[0022]
[Action]
Claim1In the data receiving device according to claim 1, the receiving means receives the data and a predetermined key,The judging means isA determination is made as to whether or not the predetermined key received by the receiving means matches the permission information recorded in the read-only area. In this case, the recording control means is received by the receiving means only when the determining means determines that the predetermined key matches the permission information.Corresponding to a given keyData is recorded in the read / write area.
[0023]
Claim2In the data receiving method described in the above, the data and the predetermined key are received, it is determined whether or not the predetermined key matches the permission information recorded in the read-only area, and the predetermined key and the permission information are determined. Only when andCorresponding to a given keyData is recorded in the read / write area.
[0024]
Claim3Data described inRecordIn the playback device,The receiving means receives the data and a predetermined key corresponding to the data, and the determining means determines whether the predetermined key received by the receiving means matches the permission information recorded in the read-only area of the recording medium. Judgment is made on whether or not. In this case, the recording control unit records the data corresponding to the predetermined key received by the receiving unit in the read / write area of the recording medium when the determining unit determines that the predetermined key matches the permission information. It is made to do. Also, the input determination means isEntered the giveninputIt is determined whether or not the key matches the permission information recorded in the read-only area. In this case, the read control meansinputBy the judging means, a predeterminedinputOnly when it is determined that the key matches the permission information, the data recorded in the read / write area is read out.
[0025]
Claim4Data described inRecordIn the playback method,Data and a predetermined key corresponding to the data are received, it is determined whether the predetermined key matches the permission information recorded in the read-only area of the recording medium, and the predetermined key matches the permission information Only when this is done, data corresponding to a predetermined key is recorded in the read / write area of the recording medium. Also,PredeterminedinputWhen a key is entered, its predeterminedinputDetermine whether the key and the permission information recorded in the read-only area match.inputOnly when the key and the permission information match, the data recorded in the read / write area is read out.
[0030]
Claim5In the data receiving device according to claim 1, the receiving means includes dataAnd a provider identification ID for identifying the data providerReceiveThe determination means determines whether or not the provider identification ID matches the provider identification ID recorded in the read-only area of the recording medium.It is made to do. The reading means isWhen the determination means determines that the provider ID and the provider identification ID recorded in the read-only area match,Recorded in the read-only areaRecordableThe number of times is read out. In this case, the recording control means is read by the reading means.RecordableDepending on the number of timesRecording mediaIt is designed to record in the read / write area.
[0032]
【Example】
Examples of the present invention will be described below, but before that, in order to clarify the correspondence between each means of the invention described in the claims and the following examples, parentheses after each means are shown. The features of the present invention are described as follows by adding the corresponding embodiment (however, an example).
[0033]
That is, the claim1The data receiving device described in 1 receives the transmitted data,RemovableA data receiving device for recording on a recording medium, the recording medium having a read-only area where only information can be read and a read / write area where both information can be written and read. When permission information for permitting a predetermined process is recorded, and data is transmitted together with a predetermined key, receiving means for receiving the data and the predetermined key (for example, the TV tuner 71 shown in FIG. 3 and Data decoder 73 etc.),Receiving meansDetermining means (for example, the comparison circuit 79 shown in FIG. 3) for determining whether or not the predetermined key received by the key matches the permission information recorded in the read-only area;,Received by the receiving means only when the judging means judges that the predetermined key and the permission information match.Corresponding to a given keyRecord data in the read / write areaRecording control means ( For example, the data storage controller 74 shown in FIG. ) WithIt is characterized by that.
[0034]
Claim3Data described inRecordThe playback deviceReceiving data can be received and removedRecord on recording mediumAnd the recording mediumData to play back dataRecordA playback device,Receiving means for receiving data and a predetermined key corresponding to the data (for example, the TV tuner 71 and the data decoder 73 shown in FIGS. 6 and 9), the predetermined key received by the receiving means, and reading of the recording medium Determination means for determining whether or not the permission information recorded in the dedicated area matches. ( For example, the comparison circuit 179 shown in FIGS. ) And a recording control unit that records data corresponding to the predetermined key received by the receiving unit in the read / write area of the recording medium when the determination unit determines that the predetermined key matches the permission information. ( For example, the data storage controller 174 shown in FIGS. ) When,EnteredPredetermined input keyAnd whether the permission information recorded in the read-only area matchesinputDetermining means (for example, the processing step S15 of the program shown in FIG. 7 or the processing step S29 of the program shown in FIG. 10);,inputBy the judging means, a predeterminedinputReads data recorded in the read / write area only when it is determined that the key and permission information match.Read control means (for example, processing step S16 of the program shown in FIG. 7 and processing step S30 of the program shown in FIG. 10).It is characterized by that.
[0037]
Claim5The data receiving device described inData and a provider identification ID for identifying the provider of the data;Receiving means (for example, the TV tuner 71 and the data decoder 73 shown in FIG. 19);Determining means for determining whether the provider identification ID matches the provider identification ID recorded in the read-only area of the recording medium ( For example, the comparison circuit 479 shown in FIG. ) And when the determination means determines that the provider ID and the provider identification ID recorded in the read-only area match,Recorded in the read-only areaRecordableRead means for reading the number of times (for example, the data storage controller 374 shown in FIG. 19) and,Read by reading meansRecordableDepending on the number of timesRecording mediaRecord in the read / write areaRecording control means (for example, processing step S88 of the program shown in FIG. 20).It is characterized by that.
[0038]
Of course, this description does not mean that the respective means are limited to those described above.
[0039]
FIG. 1 shows the configuration of a first embodiment of a broadcasting system to which the present invention is applied. In broadcasting stations, for example, data broadcasting is performed in the same manner as character multiplex broadcasting, together with terrestrial television broadcasting. That is, in the broadcasting station, a video signal of a program to be broadcast as a television broadcast is input to the mixer 1. In addition to the video signal, the mixer 1 also receives data to be broadcast in a blanking period (for example, a vertical blanking period) of the video signal.
[0040]
Here, this data (hereinafter referred to as provided data as appropriate) is provided by an information provider (IP (Information Provider). The information provider includes a database 21 in which provided data is registered, The host computer 22 reads the provided data from the database 21 as appropriate and transmits it to the mixer 1 of the broadcasting station via, for example, a public network. In addition to the provided data, the host computer 22 also transmits, for example, a key as permission information for permitting reception of the provided data to the mixer 1.
[0041]
In the mixer 1, the provided data and the key are superimposed on the blanking period of the video signal. That is, in the mixer 1, the provided data and the key are the 16th H (line) and 21st H of the vertical blanking period of the video signal (for example, this is for odd fields, as in the case of text multiplex broadcasting, for example) The even field is superimposed on 279H and 284H). Here, the provided data is, for example, displayable data (image data or character data). However, the provided data is not limited to this, and may be data that can be output by voice (audio data), data that can be handled by a computer (including computer programs), and the like.
[0042]
The video signal on which the provided data and the key are superimposed is output to the modulator 2. In addition to the video signal, the modulator 2 is supplied with audio (program audio) associated with the video signal. In the modulator 2, the video signal and the audio signal are multiplexed (frequency multiplexed) and further modulated. The resulting modulated signal is supplied to the transmitter 3, where necessary processing such as amplification processing is performed, and then transmitted from the antenna 4 as a television broadcast signal.
[0043]
This television broadcast signal is received by the antenna 11 on the user side, and the received signal (television broadcast signal) is supplied to the receiving device 12.
[0044]
A user who wishes to view the provided data purchases a recording medium 14 (details of which will be described later) on which a key as permission information is recorded from an information provider. The recording medium 14 is detachable from a slot (not shown) of the receiving device 12, and a user who has purchased the recording medium 14 sets (installs) the receiving device 12 in the receiving device 12.
[0045]
In the receiving device 12, the received signal supplied from the antenna 11 is demodulated, and provided data and a key included in the blanking period are extracted (extracted) from the demodulated signal (video signal). Further, the receiving device 12 reads the key recorded on the recording medium 14, and compares this key with the received key. The provided data is recorded on the recording medium 14 only when the two match.
[0046]
As described above, since the provided data is recorded on the recording medium 14, the user reproduces the provided data from the recording medium 14 when desired, for example, a monitor including a television receiver or the like. 13 can be displayed and viewed.
[0047]
Furthermore, since the provided data is recorded on the recording medium 14 only when the key recorded on the recording medium 14 matches the received key, unauthorized reception can be prevented.
[0048]
In the above-described case (the same applies to the examples described later), if the provided data is output to the monitor 13 before being recorded on the recording medium 14, the provided data may be viewed. Therefore, in order to firmly prevent unauthorized reception, it is only necessary to scramble the provided data using a key and to descramble the user using the key.
[0049]
In addition, the broadcast station transmits the provided data during a time when normal text multiplex broadcasting or the like is not performed (for example, 2:00 am to 6:00 am), and the receiving device 12 receives the received data. It is preferable to record on the recording medium 14.
[0050]
Next, the recording medium 14 will be described. The recording medium 14 is, for example, a disk-shaped recording medium (for example, MD (trademark) for recording / reproducing data (MD data (Mini Disc data) (trademark))), a tape-shaped recording medium, a card shape, or the like. 2, for example, as shown in FIG. 2, a read-only area (hereinafter, appropriately referred to as “ROM area”) in which only information can be read and a read / write area in which both information can be written and read (hereinafter, appropriately) RAM area).
[0051]
For example, assuming that the recording medium 14 is MD data, information is recorded optically in the ROM area, and information is recorded magneto-optically in the RAM area.
[0052]
As described above, a key as permission information is recorded in the ROM area of the recording medium 14. Further, in this embodiment, the expiration date of the recording medium 14 is also recorded in the ROM area. The information provider side in FIG. 1 changes the key to be transmitted to the broadcasting station together with the provision data for each expiration date recorded in the ROM area. Therefore, the user wants to receive the provision data even after the expiration date. The user needs to purchase a new recording medium in which the changed key is recorded from the information provider.
[0053]
The permission information can be referred to as a key as described above if it is a key for enabling the reception of the provided data. However, if the permission information is a password for enabling the reception of the provided data, the permission information is Can be called a password or PIN, or the information provider's original dedicated viewer.
[0054]
On the other hand, the provided data received by the receiving device 12 is recorded in the RAM area of the recording medium 14.
[0055]
As described above, since the key is recorded on the recording medium 14 and the provided data can be recorded, the convenience can be improved. In addition, since the key (in the present embodiment, the same applies to the expiration date) is recorded in the ROM area, it is possible to prevent the key from being accidentally deleted. Furthermore, when the recording medium 14 is MD data, it can be easily carried and set to the receiving device 12 as compared with the hard disk described above, and MD data other than the receiving device 12 can be reproduced. The provided data can be viewed with a simple device.
[0056]
Next, FIG. 3 illustrates a configuration example of the receiving device 12 of FIG. The receiving device 12 (the same applies to a receiving device described later) can be remotely controlled by a remote commander (hereinafter referred to as a remote controller as appropriate) 15.
[0057]
The television broadcast signal received by the antenna 11 is supplied to the television tuner 71. In addition to the television broadcast signal, the television tuner 71 is supplied with a control signal for instructing a channel to be demodulated from the control circuit 78, and the television tuner 71 controls the television broadcast signal received from the antenna 11. The channel corresponding to the control signal from the circuit 78 is demodulated. The demodulated signal obtained as a result is output to the television display circuit 72 and the data decoder 73.
[0058]
The television display circuit 72 extracts a video signal from the demodulated signal from the television tuner 71, performs a process necessary for displaying it on the monitor 13, and outputs it to the monitor 13. As a result, a program (video) of a predetermined channel is displayed on the monitor 13. Note that, from the demodulated signal, the sound accompanying the program is also extracted in a predetermined processing circuit (not shown) and output from a speaker (not shown).
[0059]
On the other hand, the data decoder 73 is composed of a data slicer and other blocks in the same manner as a normal character multiplex broadcast decoder, and is provided on the video signal (vertical blanking period) of the demodulated signal. Data and keys are extracted and decoded. The provided data or key (hereinafter referred to as a reception key as appropriate) is output to the data storage controller 74 or the comparison circuit 79, respectively. When receiving the reception key, the comparison circuit 79 controls the data storage controller 74 to read a key recorded in the ROM area of the recording medium 14 (hereinafter referred to as a recording key as appropriate). Further, the comparison circuit 79 compares the reception key and the recording key and determines whether or not they match. When the reception key and the recording key match, the comparison circuit 79 outputs a signal for instructing the data storage controller 74 to write the provided data to the recording medium 14 (hereinafter referred to as a writing instruction signal as appropriate). To do.
[0060]
When receiving the write instruction signal from the comparison circuit 79, the data storage controller 74 records the provided data output from the data decoder 73 in the RAM area of the recording medium 14.
[0061]
On the other hand, when the data storage controller 74 cannot receive the write instruction signal from the comparison circuit 79, the data storage controller 74 discards the provided data output from the data decoder 73 without recording it in the recording medium 14.
[0062]
Therefore, the provided data is recorded on the recording medium 14 only when the reception key and the recording key match. That is, the recording key permits the recording of the provided data to the recording medium 14, and the recording is performed.
[0063]
As described above, after the provided data is recorded on the recording medium 14, when the remote controller 15 is operated so as to display the provided data (hereinafter referred to as a display operation as appropriate), an RF signal corresponding to the operation is generated. The radio waves are emitted from the remote controller 15 as radio waves. This RF signal is received by the antenna 76 and supplied to the receiving circuit 77. In the reception circuit 77, the RF signal from the antenna 76 is demodulated, and the demodulated signal obtained as a result is output to the control circuit 78. The control circuit 78 controls the data storage controller 74 to read the provided data from the recording medium 14 when the demodulated signal from the receiving circuit 77 corresponds to the display operation. As a result, the data storage controller 74 reads the provided data from the recording medium 14 and outputs it to the data display circuit 75.
[0064]
The data display circuit 75 has a built-in memory, for example, and develops the provided data as a bitmap in the memory and outputs it to the monitor 13. Thereby, the provided data is displayed on the monitor 13. If the video of the program is displayed on the monitor 13, the provided data can be displayed in place of the video, or can be displayed superimposed on the video, or a so-called picture. It can be displayed on an in-picture sub-screen.
[0065]
Further, the user removes the recording medium 14 on which the provided data is recorded from the receiving device 12 and can reproduce the recording medium 14 (if the recording medium 14 is, for example, MD data, the reproduction is possible. The provided data can also be viewed by setting in the MD playback device.
[0066]
Next, referring to FIG. 4, the operation of the receiving device 12 when receiving provided data will be further described. First, in step S1, a television broadcast signal from the antenna 11 is received by the television tuner 71, and a predetermined channel is demodulated. The demodulated signal obtained as a result is output to the data decoder 73 and decoded in step S2. In step S 3, the data decoder 73 extracts the reception key from the decoding result and outputs it to the comparison circuit 79. At this time, provided data is extracted from the decoding result in addition to the key, and is output to the data storage controller 74.
[0067]
Thereafter, in step S4, the data storage controller 74 reads out the recording key from the recording medium 14 and outputs it to the comparison circuit 79. The process proceeds to step S5, where it is determined whether or not the reception key and the recording key match. Determination is made by the comparison circuit 79. If it is determined in step S5 that the reception key and the recording key match, the process proceeds to step S6, where the provided data is recorded on the recording medium 14 by the data storage controller 74. If it is determined in step S5 that the reception key and the recording key do not match, step S6 is skipped and the process ends.
[0068]
In the present specification, the case where the reception key and the recording key match corresponds to the case where the reception key and the recording key correspond to each other in addition to the case where the reception key and the recording key physically match (for example, Etc.).
[0069]
In addition, not only one recording key but also a plurality of recording keys can be recorded in the ROM area of the recording medium 14. In this case, it is possible to provide a detailed service by transmitting the provided data together with a different reception key for each content. That is, when two types of provision data A or B are transmitted together with the reception key a or b, for example, a user who wants to receive only the provision data A records a recording key corresponding to the reception key a. The user who wants to receive both of the provided data A and B may purchase the recording medium 14 on which the recording key corresponding to each of the reception keys a and b is recorded. . In this case, by providing a difference in the price of the recording medium 14, the user can view only the provision data desired by the user at a price corresponding to the desired data.
[0070]
Further, when the provided data A or B is for adults or children, respectively, the parent purchases the recording medium 14 corresponding to the reception key b and gives it to the child, so that the child Viewing provided data A (especially for those that want to limit children's viewing) A can be prevented. In this case, in order for the parent to view the provided data A for adults, the recording medium 14 corresponding to the reception key a may be purchased separately.
[0071]
Further, the user can easily create an original library by purchasing the recording medium 14 on which the recording key necessary for receiving the desired provided data is recorded. That is, for example, by purchasing a recording medium 14 on which a recording key necessary for receiving a recipe for a dish and provision data relating to a restaurant is purchased, a “cooking recipe collection” or a “delicious and cheap shop collection” You can make a library titled Alternatively, for example, by purchasing a recording medium 14 on which a recording key necessary for receiving provision data relating to the promotion of soccer J-League and CD is recorded, "J-League data" and "Latest CD promotion" You can create a library titled "Shu".
[0072]
Furthermore, if the provided data is so-called hypertext, the provided data recorded on the recording medium 14 can be used by a computer. In this case, it is possible to easily search, sort, and edit the library created as described above. In this case, it is also possible to take in data provided in a library such as a so-called Internet.
[0073]
Furthermore, since the provided data is transmitted by being superimposed on the television broadcast signal (video signal), for example, by sending the provided data related to the product, the advertisement of the product is compared with the case of mailing by direct mail or the like. It is possible to easily introduce products to many users. Further, since the provided data is recorded in the recording medium 14, for example, the electronic catalog can be created by recording the provided data relating to the product. In this case, it is possible to introduce more detailed products as compared to commercials by television broadcasting.
[0074]
Next, FIG. 5 shows a configuration of a second embodiment of the broadcasting system provided with the present invention. In the figure, portions corresponding to those in FIG. 1 are denoted by the same reference numerals. That is, in this broadcasting system, only the provided data is transmitted from the information provider to the broadcasting station without transmitting the key (reception key), and the receiving device 112 is provided instead of the receiving device 12. Otherwise, the configuration is the same as that of the broadcasting system of FIG.
[0075]
In this embodiment, the receiving device 112 extracts provided data from the video signal in the same manner as in the receiving device 12 described above. Then, according to the receiving device 112, all the provided data obtained in this way is recorded on the recording medium 14. The recording medium 14 is purchased from an information provider as in the case of FIG.
[0076]
When the user desires to view the provided data recorded on the recording medium 14, the user pays a predetermined reception fee to the information provider, thereby recording keys recorded in the ROM area (in this embodiment, (Hereinafter referred to as “record password”) and input it to the receiving device 112. In the receiving device 112, the input password (hereinafter referred to as the input password as appropriate) is compared with the recording password recorded in the ROM area of the recording medium 14, and only when the two match, the recording medium 14 The provided data is read out. The read provided data is output and displayed on the monitor 13, thereby allowing the user to view the provided data.
[0077]
FIG. 6 shows a configuration example of the receiving apparatus 112 in FIG. In the figure, portions corresponding to those in FIG. 3 are denoted by the same reference numerals, and description thereof will be omitted below as appropriate.
[0078]
In the receiving device 112, the provided data output from the data decoder 73 is output to the data storage controller 174 and recorded in the RAM area of the recording medium 14. When the remote controller 15 is displayed and operated after the provided data is recorded on the recording medium 14, the control circuit 178 controls the data storage controller 174 in the same manner as in the control circuit 78 of FIG. The provided data is read from the medium 14 and output to the monitor 13 via the data display circuit 75 and displayed.
[0079]
At this time, the comparison circuit 179 monitors reading of the provided data from the recording medium 14 by the data storage controller 174, and stops reading when the data storage controller 174 reads predetermined provided data from the recording medium 14. Let
[0080]
Therefore, from the viewpoint of the user, after a part of the provided data is displayed, the subsequent display is stopped.
[0081]
When the user wishes to view the remaining provided data recorded in the RAM area of the recording medium 14, the user is informed of the input password corresponding to the recording medium 14 by paying a predetermined reception fee to the information provider. get. Then, the input password is input by operating the remote controller 15. This input password is received by the control circuit 178 via the antenna 76 and the receiving circuit 77. Upon receiving the input password, the control circuit 178 inputs it to the comparison circuit 179. When the input password is input, the comparison circuit 179 controls the data storage controller 174 to read out the recording password recorded in the ROM area from the recording medium 14. Further, the comparison circuit 179 determines whether or not the input password and the recording password match. If the two match, the comparison circuit 179 causes the data storage controller 174 to read the remaining provided data recorded in the RAM area of the recording medium 14.
[0082]
Thereby, the user can view all the provided data recorded in the RAM area of the recording medium 14.
[0083]
Therefore, the user only has to pay the reception fee only after viewing a part of the provided data and then wishing to continue viewing the provided data. You don't have to pay. Further, from the information provider, it is possible to easily charge many users.
[0084]
When the comparison circuit 179 determines that the input password matches the recording password, the input password is output to the data storage controller 174 and recorded in the RAM area of the recording medium 14. When the input password is recorded in the RAM area of the recording medium 14 set in the receiving device 112, the data storage controller 174 reads not only the recording password but also the input password and supplies it to the comparison circuit 179. The comparison circuit 179 compares the input password with the recording password. In this case, since the input password and the recorded password always match, the user can freely view the provided data recorded in the RAM area of the recording medium 14 after once entering the input password that has been properly obtained. It becomes possible to do.
[0085]
Next, the processing of the receiving device 112 will be further described with reference to the flowchart of FIG. Whether the user purchases the recording medium 14 and records the provision data on the recording medium 14 by the receiving device 112 as described above, and then views the part of the provision data to view the remaining provision data. Decide if. When the user does not wish to view the remaining provided data, no particular processing is performed.
[0086]
On the other hand, when the user desires to view the remaining provided data, in step S11, the user pays a reception fee to the information provider, for example, by postal transfer or registered mail, or at a predetermined store. Thereafter, in step S12, the user is notified of the input password, for example, by mail or telephone, or from a store clerk. In step S13, the recording medium 14 is set in the receiving device 112, and the process proceeds to step S14 where an input password is input.
[0087]
When the input password is input, the receiving device 112 determines whether or not the input password matches the recording password recorded in the ROM area of the recording medium 14 in step S15. If it is determined in step S15 that the input password does not match the recording password, that is, if the input password is erroneously input, for example, the process returns to step S14 and the input password is input again.
[0088]
On the other hand, if it is determined in step S15 that the input password matches the recording password, the process proceeds to step S16, the remaining provided data recorded in the recording medium 14 is read, and the process proceeds to step S17. In step S17, the provided data read from the recording medium 14 is displayed on the monitor 13, and the process ends.
[0089]
6 can be configured as a playback device for the recording medium 14 by removing the TV tuner 71, the TV display circuit 72, and the data decoder 73.
[0090]
Next, FIG. 8 shows a configuration of a third embodiment of a broadcasting system to which the present invention is applied. In the figure, parts corresponding to those in FIG. 5 are denoted by the same reference numerals. That is, this broadcasting system is provided with a receiving device 212 in place of the receiving device 112, except that the receiving device 212 and the information provider's host computer 22 are connected via the public network 30. The configuration is the same as that of the broadcasting system of FIG.
[0091]
In this embodiment, the provided data is recorded in the recording medium 14 in the receiving device 212 in the same manner as in the receiving device 112 described above.
[0092]
When the user desires to view the provided data recorded on the recording medium 14, the user requests an input password from the information provider's host computer 22 via the public line 30. When the host computer 22 receives this request, the user makes an inquiry to a computer of a credit company (not shown) as to whether or not the payment of the reception fee is possible. The data is transmitted to the receiving device 212 via the network 30. When receiving the input password, the receiving device 112 compares the input password with the recording password recorded in the ROM area of the recording medium 14, and the provided data is read from the recording medium 14 only when they match. It is. The read provided data is output and displayed on the monitor 13, thereby allowing the user to view the provided data.
[0093]
FIG. 9 shows a configuration example of the receiving device 212 of FIG. In the figure, portions corresponding to those in FIG. 6 are denoted by the same reference numerals, and description thereof will be omitted below as appropriate.
[0094]
In this receiving device 212, after the provided data is recorded in the RAM area of the recording medium 14, when the remote controller 15 is displayed and operated, a part of the provision is also provided from the recording medium 14 in the same manner as in FIG. When the data is read and displayed on the monitor 13, the display of the provided data is stopped.
[0095]
When the user wishes to view the remaining provided data recorded in the RAM area of the recording medium 14, he / she operates the remote controller 15 to request an input password from the information provider (hereinafter, such a remote controller). 15 operations are appropriately called request operations). A signal corresponding to the requested operation (hereinafter referred to as a requested operation signal as appropriate) is received by the control circuit 178 via the antenna 76 and the receiving circuit 77. When the control circuit 178 receives the requested operation signal, the line I / F80 is controlled to establish a communication link with the host computer 22 of the information provider via the public network 30. The line I / F 80 establishes a communication link with the host computer 22 and then requests the host computer 22 for an input password.
[0096]
When the host computer 22 receives this request, the user inquires of the computer of the credit company whether the payment of the reception fee is possible. If there is no problem (there is no delinquency and the payment of the reception fee is possible). The input password corresponding to the recording medium 14 (the same input password as the recording password recorded in the ROM area of the recording medium 14) is sent to the receiving device 212 (line I / F 80) via the public network 30. Send. In the receiving device 112, the input password is received by the line I / F 80. When the line I / F 80 receives the input password, the line I / F 80 disconnects the line and outputs the input password to the control circuit 178. Upon receiving the input password, the control circuit 178 inputs it to the comparison circuit 179. Thereafter, the remaining provided data recorded in the RAM area of the recording medium 14 is displayed on the monitor 13 in the same manner as in FIG.
[0097]
In this case as well, as in the case of FIG. 6, the input password is recorded in the RAM area of the recording medium 14, and thereafter, the provided data recorded in the RAM area of the recording medium 14 can be freely changed. It becomes possible to watch.
[0098]
As described above, according to the present embodiment, since the input password is transmitted from the information provider (host computer 22), it is possible to prevent an input error. However, since the input password is transmitted via the public network 30, a transmission error may occur during the transmission. In this case, the input password does not match, and therefore the provided data is not read. . Therefore, in such a case, it is necessary to request the input password again.
[0099]
Next, the processing of the reception device 212 will be further described with reference to the flowchart of FIG. The user purchases the recording medium 14 from the information provider, and sets the recording medium 14 in the receiving device 212 in step S21. Then, after recording the provision data on the recording medium 14, by viewing a part of the provision data, it is determined in step S22 whether to view the remaining provision data, that is, whether to request (claim) the input password. To do. If it is determined in step S22 that the remaining provided data is not viewed, the process ends.
[0100]
On the other hand, when viewing the remaining provided data in step S22, the user requests the information provider for an input password by requesting the remote controller 15. When the remote controller 15 is requested, in step S23, a communication link with the information provider host computer 22 is established by the line I / F 80 via the public network 30 as described above. Further, in step S23, an input password is requested to the host computer 22 by the line I / F 80.
[0101]
When the host computer 22 receives the request for the input password, in step S24, for example, in order to investigate the payment of the reception fee by credit, information about the credit card owned by the user (for example, the name of the user, the credit card Requesting the line I / F 80 via the public network 30 (hereinafter referred to as credit card information as appropriate). When the line I / F 80 receives a request for credit card information, the line I / F 80 outputs the request to the control circuit 178. Then, the control circuit 178 controls the data display circuit 75 via the data storage controller 174, thereby causing the monitor 13 to display a message for prompting input of credit card information.
[0102]
The user views the display on the monitor 13 and inputs credit card information by operating the remote controller 15. The credit card information is received by the control circuit 78 via the antenna 76 and the receiving circuit 77. When the control circuit 78 receives the credit card information, it outputs it to the line I / F 80. The line I / F 80 transmits the credit card information from the control circuit 78 to the host computer 22 of the information provider via the public network 30.
[0103]
The host computer 22 receives the credit card information transmitted from the line I / F 80 and makes an inquiry to the computer of the credit company based on the credit card information. Then, the host computer 22 waits for a response from the credit company computer, and determines in step S25 whether there is a problem with the user based on the response. If there is a problem with the user, the process is terminated. If there is no problem with the user, the process proceeds to step S26, and the host computer 22 sends an input password corresponding to the recording medium 14 to the line I / F 80. Sent.
[0104]
In the line I / F 80, the input password transmitted from the host computer 22 is received in step S27, the process proceeds to step S28, and the line is disconnected. The input password received by the line I / F 80 is input to the comparison circuit 179 via the control circuit 178.
[0105]
In step S29, the comparison circuit 179 determines whether or not the input password matches the recording password recorded in the ROM area of the recording medium 14. If it is determined in step S29 that the input password does not match the recording password, the process ends.
[0106]
If it is determined in step S29 that the input password matches the recording password, the process proceeds to step S30, the remaining provided data recorded in the recording medium 14 is read, and the process proceeds to step S31. In step S31, the provided data read from the recording medium 14 is displayed on the monitor 13, and the process ends.
[0107]
Next, FIG. 11 shows a configuration of a fourth embodiment of the broadcasting system to which the present invention is applied. In the figure, parts corresponding to those in FIG. 8 are denoted by the same reference numerals.
[0108]
In this broadcasting system, the information provider also serves as, for example, a merchandise store, and as provided data, information on the product (product information) (for example, data of a photograph of the appearance of the product, its price, size) Etc.) to the broadcasting station. In the broadcasting station, the provided data is transmitted by being superimposed on the television broadcast signal (video signal) as described above.
[0109]
This television broadcast signal is received by the antenna 11 on the user side, and the received signal (television broadcast signal) is supplied to the receiving device 312. In the receiving device 312, the reception signal supplied from the antenna 11 is demodulated, and provided data is extracted from the demodulated signal (video signal). The provided data is output to the monitor 13 and displayed.
[0110]
When the user wishes to purchase a product by looking at the display on the monitor 13, the user first contacts the credit company and enters into a credit contract. In a credit company, when a user applies for a credit contract, a predetermined examination is performed. If there is no problem with the user, a recording medium 14 (in place of the credit card) is sent to the user as a credit card. In the ROM area of the recording medium 14, the recording medium 14 can be used as a credit card in addition to the key described in FIG. Information relating to the user (for example, the user's name) and information corresponding to the credit card number are also recorded.
[0111]
After receiving the recording medium 14 or at the same time as receiving it, the user is informed of the personal identification number recorded on the recording medium 14 from the credit company. Then, when the user desires to purchase the product displayed on the monitor 13, the user sets the recording medium 14 in the receiving device 312. Further, the user inputs a personal identification number (hereinafter referred to as an input personal identification number as appropriate) taught by the credit company to the receiving device 312. When receiving the input code number, the receiving device 312 reads the code number recorded on the recording medium 14 (hereinafter referred to as “recorded code number” as appropriate) and compares them. When the input code number and the recorded code number match, the receiving device 312 informs the host computer of the information provider that the product is purchased via the public network 30 (hereinafter referred to as a product purchase request as appropriate). 22 to send.
[0112]
When the host computer 22 receives a product purchase request, it is registered in the database 21 to that effect. The information provider refers to the registration status in the database 21 and sends the product to the user and charges the credit company for the payment. The credit company pays the information provider and sends an invoice to the user. Thereafter, the payment is deducted from the user's bank account, for example. That is, the price of the product is paid to the credit company.
[0113]
When the input code number and the recorded code number do not match, the host computer 22 is configured not to accept a product purchase request.
[0114]
As described above, the merchandise purchase request process is performed only when the recorded code number recorded in the ROM area of the recording medium 14 and the input code number input to the receiving device 312 match. However, it is possible to prevent the product from being purchased by mistake.
[0115]
Next, FIG. 12 illustrates a configuration example of the reception device 312 of FIG. In the figure, parts corresponding to those in FIG. 9 are denoted by the same reference numerals.
[0116]
The television broadcast signal received by the antenna 11 is supplied to the television tuner 71. As described above, the television tuner 71 demodulates a predetermined channel among the television broadcast signals, and outputs a demodulated signal obtained as a result to the television display circuit 72 and the data decoder 73.
[0117]
The television display circuit 72 extracts a video signal from the demodulated signal from the television tuner 71, performs a process necessary for displaying it on the monitor 13, and outputs it to the monitor 13. As a result, a program (video) of a predetermined channel is displayed on the monitor 13.
[0118]
On the other hand, in the data decoder 73, the provided data superimposed on the video signal (vertical blanking period) of the demodulated signal is extracted and decoded. The provided data is output to the data display circuit 75 via the data storage controller 274, whereby the provided data is displayed on the monitor 13 in the same manner as described above.
[0119]
Note that it is possible to control which of the program video or the provided data is displayed on the monitor 13 by operating the remote controller 15.
[0120]
When the provided data is displayed on the monitor 13, when the user desires to purchase a product corresponding to the provided data, the user operates the remote controller 15 to specify the product ( Hereinafter, this is referred to as purchase operation as appropriate) A signal corresponding to the purchase operation (hereinafter referred to as a purchase operation signal as appropriate) is received by the control circuit 278 via the antenna 76 and the reception circuit 77. When receiving the purchase operation signal, the control circuit 278 controls the line I / F 80 and thereby establishes a communication link with the host computer 22 of the information provider via the public network 30. Then, the line I / F 80 transmits a product purchase request to the host computer 22 via the public network 30.
[0121]
When the host computer 22 receives the product purchase request, the host computer 22 sends a message for confirming whether the request is correct (this message includes the product name and the like) (hereinafter referred to as a confirmation message as appropriate) to the public. The data is transmitted to the line I / F 80 via the network 30. When receiving the confirmation message, the line I / F 80 outputs the confirmation message to the data display circuit 75 via the control circuit 278 and the data storage controller 274. As a result, a confirmation message is displayed on the monitor 13.
[0122]
The user views the confirmation message, confirms that the product name included therein corresponds to the product desired to be purchased, and then operates the remote controller 15 to input the input password. This input password is received by the control circuit 278 via the antenna 76 and the receiving circuit 77. When receiving the input code number, the control circuit 278 inputs this to the comparison circuit 379. When the comparison circuit 379 receives the input personal identification number, the comparison circuit 379 controls the data storage controller 274 to read the recording personal identification number recorded in the ROM area of the recording medium 14. Then, the comparison circuit 379 compares the input code number and the recorded code number, and outputs a control signal to the control circuit 278 only when they match.
[0123]
Upon receiving the control signal from the comparison circuit 379, the control circuit 379 causes the line I / F 80 to transmit a product purchase request again.
[0124]
Note that if the control circuit 379 cannot receive the control signal from the comparison circuit 379, the control circuit 379 causes the line I / F 80 to disconnect the line and stops the processing.
[0125]
When the host computer 22 receives the product purchase request again from the line I / F 80, the host computer 22 registers that in the database 21. Thereby, as described above, the product is delivered from the information provider to the user. Further, after the product purchase request is registered in the database 21, the host computer 22 includes details (hereinafter referred to as purchase details as appropriate) including the price and other information of the product (product purchased by the user) corresponding to the product purchase request. ) Is transmitted to the line I / F 80 via the public network 30. The line I / F 80 receives the purchase details and then disconnects the line. Further, the line I / F 80 outputs the received purchase details to the control circuit 278. The control circuit 278 outputs the purchase details from the line I / F 80 to the data storage controller 274 and records it on the recording medium 14. In other words, the purchase details are recorded in the RAM area of the recording medium 14.
[0126]
When the user wishes to confirm the purchase details, the user operates the remote controller 15 as such (this operation is hereinafter referred to as a confirmation operation as appropriate). A signal corresponding to the confirmation operation (hereinafter referred to as a confirmation operation signal as appropriate) is received by the control circuit 278 via the antenna 76 and the reception circuit 77. When the control circuit 278 receives the confirmation operation signal, the data storage is performed. The controller 274 is caused to read the purchase details recorded in the RAM area of the recording medium 14. The purchase details read from the recording medium 14 are output from the data storage controller 274 to the data display circuit 75, and thereby displayed on the monitor 13.
[0127]
As described above, since the purchase details are recorded in the RAM area of the recording medium 14, the user can use the recording medium 14 as a credit card as described above. It can also be used as Further, in this case, the user can easily confirm the purchase details. Therefore, since the recording medium 14 can be used not only as a credit card but also as a household account book, the convenience can be improved.
[0128]
Next, the operation of the receiving apparatus 312 will be further described with reference to the flowchart of FIG. First, in step S41, the user applies for a credit contract with a credit company. Then, in the credit company, the user is examined in step S42, and if there is no problem, the recording medium 14 as a credit card is issued to the user in step S43. In this embodiment, the recording medium is, for example, MD data. In addition, since this MD data functions as a credit card, it is hereinafter referred to as an MD card as appropriate.
[0129]
After receiving the MD card 14, the user activates the receiving device 312. Thereby, in step S44, as described above, the provided data relating to the television broadcast program (video) or the product is displayed on the monitor 13.
[0130]
If the user is viewing the provided data related to the product, in step S45, the user determines whether there is a product desired to be purchased. If there is no product desired to be purchased, the process returns to step S44. If there is a product desired to be purchased, the remote controller 15 is purchased in step S46.
[0131]
The purchase operation signal output by the purchase operation of the remote controller 15 is received by the control circuit 278. When receiving the purchase operation signal, the control circuit 278 controls the line I / F 80, and thereby in step S47. A communication link is established with the information provider's host computer 22 via the public network 30.
[0132]
Thereafter, as described above, a confirmation message is transmitted from the host computer 22 and displayed on the monitor 13. While viewing the display on the monitor 13, the user confirms whether or not to purchase the product in step S48.
[0133]
If the user decides not to purchase the product, the process is stopped. If the user purchases a product, the MD card 14 is inserted (set) in the slot of the receiving device 312 in step S49, and the input password is operated on the remote controller 15 in step S50. input.
[0134]
The input code number input by operating the remote controller 15 is supplied to the comparison circuit 379 via the antenna 76, the reception circuit 77, and the control circuit 278. In the comparison circuit 379, in step S51, the input personal identification number and the recorded personal identification number recorded in the ROM area of the MD card 14 are collated, thereby determining whether or not they match. If it is determined in step S51 that the input code number and the recorded code number do not match, the process ends. If it is determined in step S 51 that the input code number and the recorded code number match, a control signal is output from the comparison circuit 379 to the control circuit 278.
[0135]
When receiving the control signal from the comparison circuit 379, the control circuit 279 causes the line I / F 80 to transmit a product purchase request again. Thereafter, the line I / F 80 receives the purchase details transmitted from the host computer 22 via the public network 30 as described above, and outputs the purchase details to the data storage controller 274 via the control circuit 278. Thereby, in step S52, the purchase details (purchase log) are recorded in the RAM area of the MD card 14. After completion of the above processing, the line I / F 80 disconnects the line in step S53.
[0136]
Thereafter, in step S54, the product is delivered from the information provider to the user. Further, in step S55, the credit company deducts the price of the purchased product from the user's account and ends the process. .
[0137]
Next, FIG. 14 shows a configuration of an embodiment of a personal computer communication system to which the present invention is applied. The center station has a host computer 31. The host computer 31 is connected to the public network 30 and operates as a host computer of a predetermined personal computer communication network. Further, the host computer 31 stores various data provided for a fee (this data is also referred to as provided data as appropriate hereinafter).
[0138]
When a user desires to obtain provided data stored in the host computer 31, the user first contacts a credit company and enters into a credit contract. In a credit company, when a user applies for a credit contract, a predetermined examination is performed. If there is no problem with the user, a recording medium 14 (in place of the credit card) is sent to the user as a credit card. Also in this embodiment, the ROM area of the recording medium 14 has the key described in FIG. 2 (also in this embodiment, as in the case of the fourth embodiment of the broadcasting system, hereinafter referred to as a password). In addition to the expiration date, since the recording medium 14 serves as a credit card, information about the user, information corresponding to the credit card number, and the like are also recorded.
[0139]
After receiving the recording medium 14 or at the same time as receiving it, the user is informed of the personal identification number (recording personal identification number) recorded on the recording medium 14 from the credit company. And a user accesses the personal computer communication network (host computer 31) by operating the terminal 32, and establishes a communication link between them. Then, the user sets the recording medium 14 in the terminal 32, and further inputs the personal identification number (input personal identification number) taught by the credit company into the terminal 32. Note that the recording medium 14 can be attached to and detached from the terminal 32.
[0140]
In the terminal 32, when the input code number is input, the recorded code number recorded in the recording medium 14 is read and compared. When the input code number and the recorded code number match, the terminal 32 informs the host computer of the center station that it requests transmission of the provided data via the public network 30 (hereinafter referred to as transmission request as appropriate). 31.
[0141]
When the host computer 31 receives the transmission request, the host computer 31 transmits the provided data stored therein to the terminal 32 via the public network 30. In the terminal 32, provided data from the host computer 31 is downloaded, and when the data is completed, the line is disconnected.
[0142]
After the provided data is downloaded, the user can freely access the provided data.
[0143]
On the other hand, the center station charges the credit company for payment for the provided data provided to the user. The credit company pays the center station and sends an invoice to the user. Thereafter, the payment is deducted from the user's bank account, for example. That is, the payment for the provided data is paid to the credit company.
[0144]
If the input password and the recorded password do not match, a transmission request is not transmitted from the terminal 32 to the host computer 31.
[0145]
As described above, since the transmission request process is performed only when the recording code number recorded in the ROM area of the recording medium 14 matches the input code number input to the terminal 32, for example, the other person can check It is possible to prevent the provided data from being obtained in an unauthorized manner.
[0146]
FIG. 15 shows a detailed configuration example of the terminal of FIG. The modem 41 controls communication with the outside (the host computer 31 in this embodiment) instead of the CPU 42. The CPU 42 performs predetermined information processing in accordance with a system program or application program recorded in a ROM (Read Only Memory) 43. The ROM 43 stores system programs and necessary application programs. A RAM (Random Access Memory) 44 stores data necessary for the operation of the CPU 42 and other data. The input device 45 is, for example, a keyboard or a pointing device (for example, a mouse), and is operated when a command or necessary data is input to the CPU 42. The output device 46 is, for example, a monitor or a speaker, and is configured to display or output the data supplied from the CPU 42. The drive device 47 is configured such that the recording medium 14 can be attached to and detached from the drive device 47, and data is read from and written to the recording medium 14 under the control of the CPU 42. In addition, each block which comprises the terminal 32 is mutually connected via the bus | bath.
[0147]
In the terminal 32 configured as described above, the user operates the input device 45 to access the host computer 31 when desiring to obtain the provided data. A signal corresponding to this operation (hereinafter referred to as an access request operation signal as appropriate) is received by the CPU 42. When the CPU 42 receives the access request operation signal, the CPU 42 controls the modem 41, and thereby via the public network 30. Then, a communication link with the host computer 31 is established.
[0148]
After that, the user further operates the input device 45 to designate the provision data desired to be obtained (information on the designated provision data is hereinafter referred to as designation information as appropriate), and further inputs the input password. To do. The designation information and the input code number are supplied to the CPU 42. When the CPU 42 receives the designation information and the input code number, the CPU 42 controls the drive device 47 to read the recorded code number recorded in the ROM area of the recording medium 14. Let it come out. Further, the CPU 42 compares the input personal identification number and the recorded personal identification number, and if they match, the CPU 41 controls the modem 41 to send the designation information together with the transmission request via the public line 30 to the host computer. 31 is transmitted.
[0149]
When the host computer 31 receives the designation information and the transmission request, the host computer 31 transmits the provision data stored in the host computer 31 corresponding to the designation information to the terminal 32 via the public network 30. In the terminal 32, provided data from the host computer 31 is downloaded. That is, the provided data from the host computer 31 is received by the modem 41, supplied to the RAM 44, and stored.
[0150]
After the transmission of the provided data, the host computer 31 transmits a specification (hereinafter referred to as a “price description” as appropriate) including the price for the provided data to the modem 41 via the public network 30. The modem 41 receives the price statement and disconnects the line when the reception is completed. Further, the modem 41 outputs the received price details to the drive device 47, thereby recording the price details in the RAM area of the recording medium 14.
[0151]
Thereafter, the user operates the input device 45 to read the provided data stored in the RAM 44 and output it from the output device 46. If the provided data is to be saved, the input device 45 is operated to instruct the CPU 42 to save the provided data. Then, the CPU 42 reads the provided data stored in the RAM 44 and supplies it to the drive device 47. In the drive device 47, the supplied provided data is recorded in the RAM area of the recording medium 14.
[0152]
After the provision data is recorded on the recording medium 14, the user can read the provision data therefrom and output the provision data by the output device 46 when desired.
[0153]
Next, the operation of the terminal 32 will be further described with reference to the flowchart of FIG. First, in steps S61 to S63, in the same manner as in steps S41 to S43 in FIG. 13, the user issues a recording medium 14 as a credit card from a credit company. In this embodiment as well, the recording medium 14 is hereinafter referred to as an MD card 14 as appropriate, as in the case of the fourth embodiment of the broadcasting system described above.
[0154]
After receiving the MD card 14, the user operates the input device 45 to access the personal computer communication network. Thus, a communication link with the host computer 31 of the center station is established by the modem 41 in step S64. Thereafter, in step S65, the user operates the input device 45 to specify the provision data desired to be obtained. As a result, the designation information is output from the input device 45 to the CPU 42.
[0155]
In step S66, the user sets the MD card 14 in the drive device 47, and further operates the input device 45 to input the input password. This input password is output to the CPU.
[0156]
In step S68, the CPU 42 collates the input personal identification number with the recording personal identification number recorded in the ROM area of the MD data 14, and thereby determines whether or not they match. If it is determined in step S68 that the input code number does not match the recorded code number, the process ends. If it is determined in step S68 that the input password and the recorded password match, the CPU 42 causes the modem 41 to transmit the transmission request and the designation information to the host computer 31 via the public network 30. .
[0157]
Thereafter, the modem 41 receives the provision data and the price description transmitted from the host computer 31 via the public network 30 as described above. The price statement (purchase log) is supplied to the drive device 47 and recorded in the RAM area of the MD card 14 in step S69.
[0158]
In step S70, the provided data is downloaded. That is, in step S70, the provision data received by the modem is supplied to the RAM 44 and stored. After the download is completed, the user operates the input device 45 so as to output the provided data. An operation signal corresponding to this operation is received by the CPU 42. In this case, the CPU 42 reads the provided data stored in the RAM 44, supplies it to the output device 46, and outputs it.
[0159]
The user refers to the provision data output from the output device 46, and confirms whether or not the desired provision data has been downloaded correctly in step S71. If the provision data desired by the user has not been downloaded correctly, the process returns to step S70, and the provision data is downloaded again. If the provision data desired by the user has been downloaded correctly, the process proceeds to step S72 where the line is disconnected by the modem 41.
[0160]
After that, in step S73, the credit company deducts the charge for the provided data from the user's account, and the process ends.
[0161]
Next, FIG. 17 shows the configuration of a fifth embodiment of the broadcasting system to which the present invention is applied. In the figure, portions corresponding to those in FIG. 1 are denoted by the same reference numerals. That is, in this broadcasting system, a data identification ID and an IP identification ID are transmitted from an information provider to a broadcasting station instead of a key (reception key), and a receiving device 412 is provided instead of the receiving device 12. Otherwise, the configuration is the same as that of the broadcasting system of FIG.
[0162]
Here, the data identification ID is for identifying provided data, and a different data identification ID is associated with each different provided data. The IP identification ID is for identifying an information provider. FIG. 17 shows only one information provider, but there are other information providers, and each of these information providers. Is assigned a unique IP identification ID.
[0163]
A television broadcast signal transmitted from the broadcasting station is received by the antenna 11 on the user side and supplied to the receiving device 412. A user who wishes to view the provided data purchases the recording medium 114 sold by the information provider.
[0164]
Here, the recording medium 114 in the present embodiment can be used as a prepaid card. That is, like the recording medium 14, the recording medium 114 is composed of, for example, MD data, and also has a ROM area and a RAM area. Then, in the ROM area of the recording medium 114, as shown in FIG. 18, the IP identification ID of the information provider that provides the provision data recordable in the RAM area and the provision data are recorded on the recording medium 114. The maximum number of times (hereinafter referred to as “usable number” as appropriate) is recorded. Further, in the RAM area of the recording medium 114, the remaining number of times that the provided data can be recorded on the recording medium 114 (hereinafter referred to as the remaining usable number of times as appropriate) is recorded. When the recording medium 114 is unused, the usable count matches the remaining usable count.
[0165]
Returning to FIG. 17, the user who has purchased the recording medium 114 sets (attaches) the recording medium 114 to the receiving device 412, thereby recording the provision data from the information provider in the RAM area.
[0166]
That is, the reception device 412 demodulates the reception signal supplied from the antenna 11, and extracts the provided data, the data identification ID, and the IP identification ID included in the blanking period from the demodulated signal (video signal). Further, the receiving apparatus 412 reads the IP identification ID (hereinafter referred to as “recording IP identification ID” as appropriate) recorded in the recording medium 114 and the received IP identification ID (hereinafter referred to as “reception IP identification as appropriate”). ID)). If the two match, the receiving device 412 reads the remaining usable count recorded in the recording medium 114, and the provided data is recorded in the RAM area of the recording medium 114 only when it is not less than zero. Is done. Therefore, the user can record the provision data from the information provider on the recording medium 114 up to the number of times corresponding to the usable number of times recorded on the recording medium 114.
[0167]
After the provided data is recorded on the recording medium 114, the user can view the provided data by reading the provided data from the recording medium 114 and displaying it on the monitor 13.
[0168]
On the other hand, if the recorded IP identification ID and the received IP identification ID do not match, the provided data is not recorded on the recording medium 114. Therefore, unauthorized reception of provided data can be prevented. In this case, when the user desires to receive the provided data, the information provider assigned with the received IP identification ID is assigned to the information provider-specific (IP identification assigned to the information provider). It is necessary to purchase a recording medium on which an ID is recorded.
[0169]
Even when the recorded IP identification ID matches the received IP identification ID, the provided data is not recorded in the recording medium 114 if the remaining usable count is less than zero. Accordingly, in this case, the user needs to purchase a new recording medium 114 from the information provider when he / she wishes to receive the provision data.
[0170]
As described above, since the number of times that the provided data can be recorded on the recording medium 114 is determined, it is possible to prevent the reception of the provided data exceeding the number of times, that is, illegal reception. The reception fee can be collected. Further, since the provided data cannot be received unless the recording medium 114 is purchased in advance, reliable charging can be performed.
[0171]
Next, FIG. 19 illustrates a configuration example of the reception device 412 of FIG. In the figure, portions corresponding to those in FIG. 3 are denoted by the same reference numerals, and description thereof will be omitted below as appropriate.
[0172]
The data decoder 73 extracts the provided data, the data identification ID, and the received IP identification ID superimposed on the video signal, the provided data is sent to the data storage controller 374, and the data identification ID and the received IP identification ID are sent to the comparison circuit 479. , Each supplied. When the comparison circuit 479 receives the data identification ID and the reception IP identification ID, the comparison circuit 479 controls the data storage controller 374 to read out the usable count, the recorded IP identification ID, and the remaining usable count from the recording medium 114.
[0173]
Then, the comparison circuit 479 compares the usable number of times with the remaining usable number, and determines whether or not the remaining usable number is larger than the usable number. When the remaining usable number of times is larger than the usable number of times, the comparison circuit 479 controls the data storage controller 374 so that the provided data is not recorded on the recording medium 114.
[0174]
That is, since the remaining usable number of times is recorded in the RAM area of the recording medium 114, it may be altered to a large value. Therefore, when the remaining usable number is larger than the usable number, the comparison circuit 479 does not record the provided data, assuming that the remaining usable number is falsified.
[0175]
If the remaining usable number is not larger than the usable number, the comparison circuit 479 compares the recorded IP identification ID with the received IP identification ID. If they do not match, the comparison circuit 479 also controls the data storage controller 374 so that the provided data is not recorded on the recording medium 114.
[0176]
On the other hand, when the recorded IP identification ID matches the received IP identification ID, the comparison circuit 479 determines whether the remaining usable count is less than zero. When the remaining usable count is less than 0, the comparison circuit 479 controls the data storage controller 374 and again does not cause the provided data to be recorded on the recording medium 114.
[0177]
If the remaining usable count is not less than 0, the comparison circuit 479 causes the data storage controller 374 to record the provided data in the RAM area of the recording medium 114.
[0178]
Thereafter, the comparison circuit 479 monitors the data identification ID supplied from the data decoder 73 and detects whether it has changed. If the data identification ID changes, this means that different provided data has been received. Therefore, the comparison circuit 479 decrements the remaining usable count by 1, and stores the value in the recording medium 114. The data storage controller 374 is controlled to record. As a result, the remaining usable count decremented by 1 is written to the recording medium 114.
[0179]
Accordingly, the provided data provided by the information provider to which the recording IP identification ID is assigned can be recorded on the recording medium 114 by the number corresponding to the usable number of times.
[0180]
After the provided data is recorded on the recording medium 114 as described above, the user can view the provided data in the same manner as in FIG.
[0181]
Next, the operation of the reception device 412 will be further described with reference to the flowchart of FIG. When the user desires to receive the provision data provided by a certain information provider A, the user purchases the recording medium 114 dedicated to the information provider A in step S81. Here, when the receiving fee of the provided data provided by the information provider A is set to, for example, 1000 yen per time, the information provider A receives the provided data only, for example, 10 times. Recordable recording medium 114 is sold at an amount obtained by adding the price of the normal recording medium 114 to 1000 yen × 10 times. The user purchases the recording medium 114 at such a price. In this case, according to such a recording medium 114, provided data provided by the information provider A can be received only 10 times.
[0182]
After purchasing the recording medium 114, the user sets it on the receiving device 114 in step S82. Then, in step S83, the number of usable times recorded in the recording medium 114 (10 in the present embodiment) and the remaining usable number of times are compared by the comparison circuit 479. If it is determined in step S83 that the remaining usable count is not less than or equal to the usable count, the process is terminated. If it is determined in step S83 that the remaining usable number is less than or equal to the usable number, the process proceeds to step S84, and the reception signal from the antenna 11 is received by the television tuner 71. Further, in the data decoder 73, Provided data, data identification ID, and reception IP identification ID are extracted from the output of the TV tuner 71. The provided data is output to the data storage controller 374, and the data identification ID and the received IP identification ID are output to the comparison circuit 479.
[0183]
Thereafter, the process proceeds to step S85, and the comparison circuit 479 determines whether or not the received IP identification ID matches the recorded IP identification ID recorded on the recording medium 114. If it is determined in step S85 that the received IP identification ID does not match the recorded IP identification ID, the process ends. If it is determined in step S85 that the received IP identification ID and the recorded IP identification ID match, the process proceeds to step S86, and the comparison circuit 479 determines whether the remaining usable count is 0 or more. . If it is determined in step S86 that the remaining number of usable times is 0 or more, the process proceeds to step S87, and the data identification ID supplied from the data decoder 73 is stored by the comparison circuit 479.
[0184]
In step S88, the data storage controller 374 records the provided data supplied from the data decoder 73 in the RAM area of the recording medium 114, and the process advances to step S89. In step S89, the comparison circuit 479 determines whether or not the data identification ID stored in step S87 matches the data identification ID currently output from the data decoder 73. If it is determined in step S89 that the data identification ID stored in step S87 matches the data identification ID currently output from the data decoder 73, step S90 is skipped and the process returns to step S84. If it is determined in step S89 that the data identification ID stored in step S87 and the data identification ID currently output from the data decoder 73 do not match, the process proceeds to step S90, where the remaining number of usable times is 1. And the value is recorded on the recording medium 114, and the process returns to step S84.
[0185]
On the other hand, if it is determined in step S86 that the remaining usable count is not 0 or more, that is, if the provision data provided by the information provider A is received only 10 times, the process is terminated.
[0186]
Note that the recording medium 114 whose remaining usable count is no longer 0 or less cannot be used for recording provided data provided for a fee, but can be used for recording provided data provided free of charge. In other words, the information provider adds the IP identification ID assigned to the provided data to be provided for a fee and transmits it to the broadcasting station, and the receiving apparatus 412 adds the IP identification ID. The provided data is recorded only on the recording medium 114 on which the same ID as the IP identification ID is recorded. Therefore, in this case, the recording medium 114 needs to record the IP identification ID and the remaining usable count of 0 or more.
[0187]
On the other hand, the information provider transmits the provision data provided free of charge to the broadcasting station without adding the IP identification ID, and the receiving apparatus 412 provides the provision data without the IP identification ID added. The data is recorded on the recording medium 114 unconditionally. Therefore, in this case, it is not necessary to record the IP identification ID and the remaining usable number of times on the recording medium 114. Therefore, provided data provided free of charge is recorded unconditionally even on the recording medium 114 whose remaining usable count is no longer 0 or more.
[0188]
In the embodiment of the broadcasting system described above, the provision data is transmitted by being superimposed on the terrestrial television broadcast signal. However, the provision data is not limited to the satellite, the CATV network, or the like. It is possible to superimpose and transmit on a television broadcast signal using a network, or to transmit by itself.
[0190]
【The invention's effect】
Claim1And a data receiving device according to claim 12According to the data receiving method described in (1), the data and the predetermined key are received, and it is determined whether or not the predetermined key matches the permission information recorded in the read-only area. Only when it is determined that the predetermined key matches the permission information,Corresponding to the given keyData is recorded in the read / write area. Therefore, it is possible to prevent data from being illegally recorded.
[0191]
Claim3Data described inRecordReproducing apparatus and claim4Data described inRecordAccording to the playback method,Data and a predetermined key corresponding to the data are received, and it is determined whether or not the predetermined key matches the permission information recorded in the read-only area of the recording medium. When it is determined that the predetermined key matches the permission information, data corresponding to the predetermined key is recorded in the read / write area of the recording medium. Also,Entered the giveninputIt is determined whether the key and the permission information recorded in the read-only area match,inputOnly when it is determined that the key matches the permission information, the data recorded in the read / write area is read. Therefore,Prevent data from being illegally recorded, andUnauthorized reading of data can be prevented.
[0195]
Claim5The data receiving device described inAccording to the above, it is determined whether the provider identification ID and the provider identification ID recorded in the read-only area of the recording medium match, and the provider ID and the provider identification ID recorded in the read-only area Is determined to match,Recorded in the read-only areaRecordableThe number of times was read and readRecordableDepending on the number of times, the received dataRecording mediaRecorded in the read / write area. Therefore, for example, data can be recorded as many times as recorded in the read-only area.
[Brief description of the drawings]
FIG. 1 is a diagram showing a configuration of a first embodiment of a broadcasting system to which the present invention is applied.
FIG. 2 is a diagram for explaining the configuration of a recording medium.
3 is a block diagram illustrating a configuration example of the reception device 12 of FIG.
4 is a flowchart for explaining the operation of the receiving apparatus 12 of FIG. 1;
FIG. 5 is a diagram showing a configuration of a second embodiment of a broadcasting system to which the present invention is applied.
6 is a block diagram illustrating a configuration example of the reception device 112 in FIG. 5. FIG.
7 is a flowchart for explaining the operation of the reception apparatus 112 in FIG.
FIG. 8 is a diagram showing a configuration of a third embodiment of a broadcasting system to which the present invention is applied.
9 is a block diagram illustrating a configuration example of the reception device 212 in FIG.
10 is a flowchart for explaining the operation of the reception apparatus 212 of FIG.
FIG. 11 is a diagram showing the configuration of a fourth embodiment of a broadcasting system to which the present invention has been applied.
12 is a block diagram illustrating a configuration example of a reception device 312 in FIG.
13 is a flowchart for explaining the operation of the reception apparatus 312 in FIG.
FIG. 14 is a diagram showing a configuration of an embodiment of a personal computer (personal computer) communication system to which the present invention is applied.
15 is a block diagram illustrating a configuration example of a terminal 32 in FIG.
16 is a flowchart for explaining the operation of the terminal 32 of FIG.
FIG. 17 is a diagram showing a configuration of a fifth embodiment of a broadcasting system to which the present invention has been applied.
18 is a diagram for explaining the configuration of a recording medium 114. FIG.
FIG. 19 is a block diagram illustrating a configuration example of the reception device 412 in FIG. 17;
20 is a flowchart for explaining an operation of the reception device 412 in FIG.
[Explanation of symbols]
1 Mixer
2 Modulator
3 Transmitter
4,11 Antenna
12 Receiver
13 Monitor
14 Recording media
71 TV tuner
73 Data decoder
74 Data storage controller
78 Control circuit
79 Comparison circuit

Claims (6)

A data receiving device that receives transmitted data and records it on a removable recording medium,
The recording medium has a read-only area that can only read information, and a read / write area that can both write and read information,
In the read-only area, permission information for permitting predetermined processing is recorded,
When the data is transmitted with a predetermined key,
Receiving means for receiving the data and a predetermined key;
It said predetermined key received by said receiving means, determination means for determining whether said permission information recorded in the read-only area matches,
Recording control for recording the data corresponding to the predetermined key received by the receiving unit in the read / write area only when the determining unit determines that the predetermined key and the permission information match. Means and
Data receiving apparatus comprising: a. A data receiving method of a data receiving device for receiving transmitted data and recording it on a removable recording medium,
The recording medium has a read-only area that can only read information, and a read / write area that can both write and read information,
In the read-only area, permission information for permitting predetermined processing is recorded,
When the data is transmitted with a predetermined key,
Receiving the data and a predetermined key;
Determining whether the predetermined key matches the permission information recorded in the read-only area;
The data receiving method, wherein the data corresponding to the predetermined key is recorded in the read / write area only when the predetermined key matches the permission information. A data recording / reproducing apparatus for receiving transmitted data, recording the data on a removable recording medium, and reproducing the data on the recording medium ,
Receiving means for receiving the data and a predetermined key corresponding to the data;
Determining means for determining whether or not the predetermined key received by the receiving means matches the permission information recorded in the read-only area of the recording medium;
A recording that records the data corresponding to the predetermined key received by the receiving unit in the read / write area of the recording medium when the determining unit determines that the predetermined key matches the permission information Control means;
Input determination means for determining whether or not the input key that has been input matches the permission information recorded in the read-only area ;
Read control means for reading out the data recorded in the read / write area only when the input determination means determines that the predetermined input key and the permission information match.
Data recording and reproducing apparatus comprising: a. A data recording / reproducing method of a data recording / reproducing apparatus for receiving transmitted data, recording it on a removable recording medium, and reproducing the data on the recording medium ,
Receiving the data and a predetermined key corresponding to the data;
Determining whether the predetermined key matches the permission information recorded in the read-only area of the recording medium;
Only when the predetermined key matches the permission information, the data corresponding to the predetermined key is recorded in the read / write area of the recording medium,
When a predetermined input key is input, it is determined whether the predetermined input key matches the permission information recorded in the read-only area,
The data recording / reproducing method, wherein the data recorded in the read / write area is read only when the predetermined input key matches the permission information. A data receiving device that receives transmitted data and records it on a removable recording medium,
Receiving means for receiving the data and a provider identification ID for identifying the provider of the data ;
Determining means for determining whether or not the provider identification ID matches the provider identification ID recorded in the read-only area of the recording medium;
Reading means for reading the recordable number of times recorded in the read-only area when the determination means determines that the provider ID and the provider identification ID recorded in the read-only area match ;
Recording control means for recording the data in a read / write area of the recording medium in accordance with the recordable number of times read by the reading means;
Data receiving apparatus comprising: a. The receiving means further receives a data identification ID for identifying the data,
The recording control unit updates the recordable number of times according to a change in the data identification ID.
The data receiving apparatus according to claim 5.

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