JP3808754B2 - Broadcast reception processing system, receiving device, IC card applied to receiving device, and content usage condition file storage method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a broadcast reception processing system and a receiving apparatus that receive and process broadcast waves broadcast from a broadcast station. The present invention also relates to an IC card applied to a receiving apparatus that receives and processes a broadcast wave broadcast from a broadcasting station. Furthermore, the present invention provides a content usage condition file included in a broadcast wave broadcast from a broadcast station. Store Regarding the method.
[0002]
[Prior art]
A broadcast wave broadcast by a broadcasting station includes a content and a content usage condition file that defines the usage conditions of the content. The use of content, for example, the number of times of playback and the playback time limit are limited by the content usage condition file.
[0003]
[Problems to be solved by the invention]
The broadcast wave broadcast by the broadcast station is received by the receiving device. The content use condition file included in the broadcast wave is stored in this receiving device. Therefore, there is a possibility that the content use condition file is falsified. If the content usage condition file is altered, it is a serious problem for pay broadcasters who provide content such as unlimited playback of content.
[0004]
An object of the present invention is made in view of the circumstances as described above, and is an IC card applied to a broadcast reception processing system, a reception device, and a reception device capable of preventing fraud of a content use condition file. , And content usage condition file Store It is to provide a method.
[0005]
[Means for Solving the Problems]
In order to solve the above problems and achieve the object, the broadcast reception processing system of the present invention, the IC card applied to the reception device, the broadcast reception processing device, and the contents use condition file Store The method is configured as follows.
[0006]
(1) The broadcast reception processing system of the present invention is a broadcast reception processing system including an IC card and a reception device that receives the IC card and receives broadcast waves,
The receiving apparatus includes content, a content usage condition file that defines usage conditions for the content, and a content usage condition file. Store Specify the destination Designated information Broadcast receiving means for receiving a broadcast wave including: received by the broadcast receiving means Said Content usage condition file and The specified information Is transmitted from the IC card to the first transmission means for transmitting the message to the IC card. Said A first receiving means for receiving the content use condition file, and the first receiving means received by the first receiving means; Said First storage means for storing the content use condition file,
The IC card is transmitted from the receiving device Said Content usage condition file and The specified information Received by the second receiving means and the second receiving means The specified information Based on Said Content usage condition file Store When it turns out that the destination is the receiving device, Said Content usage condition file Store To the receiving device, Said Content usage condition file Store When it turns out that this is the IC card, Said Content usage condition file Store To this IC card Store A prior indication means; Store In the receiving device by the destination indicating means Store Was received by the second receiving means when Said Second transmission means for transmitting a content use condition file to the receiving device; Store With this IC card by the first instruction means Store Was received by the second receiving means when Said Second storage means for storing the content use condition file.
[0007]
(2) An IC card applied to the receiving device of the present invention is an IC card applied to a receiving device that receives broadcast waves, and includes a content use condition file transmitted from the receiving device, and Designated information Receiving means, and received by the receiving means The specified information Based on Said Content usage condition file Store When it turns out that the destination is the receiving device, Said Content usage condition file Store To the receiving device, Said Content usage condition file Store When it turns out that this is the IC card, Said Content usage condition file Store To this IC card Store A prior indication means; Store In the receiving device by the destination indicating means Store Received by the receiving means when instructed Said Transmitting means for transmitting a content use condition file to the receiving device; Store With this IC card by the first instruction means Store Received by the receiving means when instructed Said Storage means for storing the content use condition file.
[0008]
(3) Content usage condition file of this invention Store In the method, a receiving device defines content, a content usage condition file that defines usage conditions for the content, and the content usage condition file. Store Specify the destination Designated information Received a broadcast wave and received by the receiver Said Content usage condition file and The specified information Is transmitted to the IC card, and the IC card is transmitted from the receiving device. Said Content usage condition file and The specified information Received by the IC card The specified information Based on Said Content usage condition file Store When recognizing that the destination is the receiving device, The IC card is Recieved Said The content use condition file is transmitted to the receiving device, and the receiving device is transmitted from the IC card. Said Received and stored the content usage condition file and received it by the IC card The specified information Based on Said Content usage condition file Store Recognizing that this is the IC card, The IC card is Recieved Said The content usage condition file is stored.
[0009]
(4) A receiving apparatus according to the present invention includes a broadcast receiving unit that receives a broadcast wave including a content and a content use condition file that defines a use condition of the content provided from the broadcast station side, and the broadcast receiving unit. Received Said Storage means for storing the content use condition file, and stored in the storage means Said Transmitting means for transmitting the content use condition file to the broadcasting station side.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
[0011]
FIG. 1 is a diagram showing a basic configuration of a broadcast reception processing system of the present invention. As shown in FIG. 1, the broadcast reception processing system includes a broadcast station 1, a receiver 2, and a satellite 3. The IC card 26 applied to the receiver 2 shown in FIG. 1 is also called a smart card, and is a card incorporating a one-chip microcomputer (CPU, ROM, RAM, nonvolatile memory, serial I / O, etc.).
[0012]
The broadcast station 1 scrambles (encrypts) the signal of the pay broadcast program with the scrambler 14 so that only the subscribed program can be viewed. Program information (hereinafter referred to as ECM) including information on the scramble key Ks used when the program is scrambled (encrypted) and the viewing conditions of the program is generated by the ECM generation and encryption unit 15, and the multiprocessing unit 17 generates the program information. And broadcast from the antenna 18. The ECM is encrypted so as not to be fraudulent, and a key used for encryption is referred to as a work key Kw. On the other hand, for individual viewers, information on contract terms such as a viewable time limit, a viewable channel, and a program type, and individual information including a work key Kw used for decrypting an encrypted ECM (hereinafter, referred to as “encryption ECM”). EMM) is generated by the EMM generation and encryption unit 16, multiplexed on the broadcast signal by the multiplex processing unit 17, and broadcast from the antenna 18. This EMM is also encrypted with the master key Kmi so as not to be fraudulent. The master key Kmi used for encryption is a key stored in the Kmi memory 263 of the IC card 26, and is information written when the IC card is manufactured or issued.
[0013]
A broadcast wave broadcast from the antenna 18 of the broadcast station 1 is received by the antenna 21 of the receiver 2 via the satellite 3. The receiver 2 separates the encrypted EMM sent from the broadcast station 1 by the separation unit 23. The separated EMM is transmitted to the communication unit 270 in the IC card 26 via the communication unit 33 of the receiver 2. The EMM received by the communication unit 270 is sent to the EMM decoding unit 262 in the IC card 26. The EMM decryption unit 262 decrypts the encrypted EMM using the master key kmi stored in the kmi memory 263 and stores the decrypted EMM in the EMM memory 264. The work key Kw included in the decrypted EMM is provided to the ECM decryption unit 261. On the other hand, the receiver 2 also separates the encrypted ECM sent from the broadcasting station 1 by the separation unit 23. The separated ECM is transmitted to the communication unit 270 in the IC card 26 via the communication unit 33 of the receiver 2. The ECM received by the communication unit 270 is sent to the ECM decoding unit 261 in the IC card 26. The ECM decryption unit 261 decrypts the ECM encrypted using the work key Kw and temporarily stores it in the ECM memory 268. The viewing permission / non-permission determining unit 265 determines whether or not viewing is possible using the ECM and the EMM, and when the contracted program (or channel) can be viewed, the program can be descrambled (decoded) from the ECM. The scramble key Ks is taken out and the descrambler 27 is controlled and viewed. The scramble key transmitted by ECM is updated every few seconds, and the above processing is performed every time it is updated.
[0014]
The IC card 26 and the receiver 2 have a shared device key. The IC card 26 encrypts and outputs the scramble key to the receiver 2 using the shared device key stored in the device key memory 267. The receiver 2 uses the encryption communication unit 25 to decrypt the scramble key encrypted using the shared device key stored in the device key memory 24. This prevents the raw data scramble key from being exposed on the interface between the IC card 26 and the receiver 2.
The IC card 26 has a viewing information memory 266 in order to correspond to a broadcasting system that can be selected for purchase or non-purchase for each program called pay per view (hereinafter referred to as PPV). When the viewer selects a pay-per-view program and decides to purchase, the IC card 26 stores information (viewing information) for specifying a program in the ECM of the pay-per-view program in the viewing information memory 266 in the IC card. In addition to storing it, the descrambler can be controlled and viewed. This viewing information is collected by the broadcasting station 1 through a telephone line (modem 28 and modem 13), and the viewing fee is settled. The collected viewing information is stored in the viewer information memory 11 via the viewer management unit 12.
[0015]
The receiver 2 further includes a data storage device such as a hard disk drive (HDD) 31. The HDD 31 stores pay broadcast programs in a scrambled state. The receiver 2 executes a billing process when the stored pay broadcast program is reproduced. That is, the receiver 2 is compatible with a broadcasting service that allows a viewer to select whether or not to purchase when playing a PPV program or the like. The receiver 2 further includes a switching device 32 that switches between a reproduction signal read from the HDD 31 and a real-time reproduction signal provided from the channel selection unit 22.
[0016]
Further, the IC card 26 includes a decryption unit 2601, a clock and calendar 2602, a use condition determination unit 2603, a use condition generation unit 2604, an encryption unit 2605, and a use condition memory 2606.
[0017]
Here, a broadcast service with usage conditions will be described. The usage conditions referred to here include a limit on the number of times the content included in the broadcast (number of times viewed), a time limit for using the content (playback time limit), a content copy limit, and a content movement limit. The restriction on the number of times of use (viewing number) is the number of times the content stored in the HDD 31 can be reproduced. Information indicating such restriction is included in the ECM, for example, and the viewability determination unit 265 To the use condition generation unit 2604. The usage time limit (reproduction time limit) is a time limit during which the content stored in the HDD 31 can be played back. Information indicating such a restriction is included in, for example, the ECM, and is used from the viewability determination unit 265. It is given to the condition generation unit 2604. The content copy restriction is the number of times the content stored in the HDD 31 can be copied (copying is impossible, copying is possible only once, copying is possible without limitation), and information indicating such restriction is included in the ECM, for example. It is assumed that the viewing condition determination unit 265 gives it to the use condition generation unit 2604. The content movement restriction refers to whether or not the content stored in the HDD 31 can be moved. Information indicating such restriction is included in, for example, the ECM, and the viewing condition determination unit 265 to the use condition generation unit 2604. Given to.
[0018]
For example, when the program (content) is a PPV program and the number-of-plays information indicates that the number of times of viewing is 5, when the program is purchased at the time of the first playback, it is presented to the viewer as a condition for purchase. As in the case of real-time broadcasting, before presenting the viewer with the purchase conditions, the viewability determination unit 265 determines whether or not the purchase can be made, and the above-described conditions are satisfied only when the purchase permission is obtained. Is presented. When the viewer approves the condition that the number of viewing times = 5 and purchases, viewing information is stored in the viewing information memory 266. Further, the usage condition generation unit 2604 generates a usage condition file indicating that the program is a program with the number of viewing times = 5 and the current number of viewing times = 1. At the same time, the viewability determination unit 265 causes the descrambler 27 to output a scramble key via the communication unit 270. Subsequently, the usage condition file generated by the usage condition generation unit 2604 is encrypted by the encryption unit 2605 and then output from the IC card 26 to the HDD 31. The encrypted use condition file is stored in the HDD 31 in association with the program (content) that has already been stored.
[0019]
Next, when the program is reproduced again, there is a usage condition file encrypted in association with the program (content). In that case, the receiver 2 takes out the use condition file from the HDD 31 and passes it to the IC card 26. Next, in the IC card 26, the decryption unit 2601 decrypts the use condition file, and the use condition determination unit 2603 determines the number of reproductions. Here, since the number of viewing times of the use condition file is the first time, the viewing limit of the program is 5 times or less, and viewing is possible. When viewing is possible, the use condition determination unit 2603 prompts the viewing availability determination unit 265 to output a scramble key, and the viewing availability determination unit 265 outputs the scramble key to the descrambler 27 via the communication unit 270. Note that the information about the viewing limit of 5 times for the program may be described in the file at the time of the first use condition file generation as described above, or the viewing frequency information described in the ECM can be viewed. The structure given to the use condition determination part 2603 from the determination part 265 may be sufficient.
[0020]
Information indicating that the content has been viewed again from the use condition determining unit 2603 is given to the use condition generating unit 2604, and the use condition file is updated. That is, the usage condition file is updated to indicate that the number of viewing times = 2. Subsequently, the usage rule file generated by the usage rule generator 2604 is encrypted by the encryption unit 2605 and output to the HDD 31. The encrypted use condition file is stored in the HDD 31 in association with the program (content) that has already been stored.
[0021]
The above explanation is an example in the case where the number of reproductions is limited, but there is also a case where the reproduction time limit is limited. For example, consider a case where the playback deadline is February 5, 2010, which is in the future from the reception time. This reproduction time limit information is arranged in, for example, the ECM, like the reproduction number information, and is presented to the viewer as a condition for purchase when the program is purchased. Note that, similar to the restriction on the number of times of reproduction, the above-described condition is satisfied only when the viewability determination unit 265 determines whether or not the purchase is possible before presenting it to the viewer as the purchase condition, and the purchase permission determination is obtained. Is presented. When the viewer accepts the conditions and purchases, the viewing information is stored in the viewing information memory 266. Further, the use condition generation unit 2604 generates a use condition file indicating that the reproduction deadline of the program is February 5, 2010. At the same time, the viewability determination unit 265 outputs a scramble key to the descrambler 27 via the communication unit 270. Subsequently, the usage rule file generated by the usage rule generator 2604 is encrypted by the encryption unit 2605 and output to the HDD 31. The encrypted use condition file is stored in the HDD 31 in association with the program (content) that has already been stored.
[0022]
Next, when the program is reproduced again, there is a usage condition file encrypted in association with the program (content). In that case, the receiver 2 takes out the use condition file from the HDD 31 and passes it to the IC card 26. Next, in the IC card 26, the decryption unit 2601 decrypts the use condition file, and the use condition determination unit 2603 determines the reproduction time limit. Here, since the reproduction time limit of the use condition file is February 5, 2010, it can be viewed if it is within the time limit as compared to the date and time indicated by the clock and calendar 2602. When viewing is possible, the viewing condition determination unit 2603 prompts the viewing permission determination unit 2265 to output a scramble key, and the viewing permission determination unit 265 sends the scramble key to the descrambler 27 via the communication unit 270. Output. Unlike the case of the number of times of reproduction, the usage condition file (in this case, reproduction time limit information) is not updated with viewing. Further, in this example, an example in which the timepiece and calendar 2602 are in the IC card 26 is shown, but the present invention is not limited to this. For example, the receiver 2 may have a clock and calendar function, and the receiver 2 may provide time information to the IC card 26. However, it is assumed that the functions of the clock and calendar installed in the receiver 2 are safely managed so as not to be fraudulent.
[0023]
As described above, the use condition file is stored in the receiver 2 (HDD 31) outside the IC card 26. For this reason, the IC card 26 cannot manage copying or moving of the use condition file. Therefore, if the receiver main body is illegally modified, the number of viewing times and the viewing time limit may be deceived. That is, there is a problem that the security for the use condition file is weak.
[0024]
Therefore, in the broadcast reception processing system of the present invention, in order to solve the above-described problem, the broadcast station designates the management destination of the usage condition file and stores the usage condition file in the designated management destination. Thereby, it is possible to improve the security for the use condition file. The first embodiment will be described below.
[0025]
For example, there are an IC card 26 and a receiver 2 as management destinations of usage conditions. When the IC card 26 is designated as the management destination of the use condition file, the use condition file is stored in the use condition memory 2606 in the IC card 26. When the receiver 2 is designated as the management destination of the usage rule file, the usage rule file is stored in the HDD 31 in the receiver 2.
[0026]
The usage conditions transmitted by ECM were the number of usages and the usage time limit (either one or both). In the present invention, management destination designation information for designating the management destination of the use condition file is added to the ECM. The management destination of the usage condition file is specified in the IC card 26 (usage condition memory 2606) or the receiver 2 (HDD 31) by the usage destination file management destination designation information. When the receiver 2 is a management destination, the usage condition file is encrypted and stored in the HDD 31.
[0027]
Strictly speaking, there are cases where the management destination is not specified by the broadcasting station, the IC card 26 is specified as the management destination, and the receiver 2 is specified as the management destination. For example, the management destination of the use condition file of a program that needs to strictly control fraud is set in the IC card. The management destination of the use condition file of the program that needs to control the indefinite is set in the receiver. The management destination of the program usage condition file that does not require fraud is not specified.
[0028]
2 and 3 are flowcharts for explaining processing in the IC card.
[0029]
First, FIG. 2 will be described first. The flowchart shown in FIG. 2 summarizes the case where the received program is a PPV program and the use condition file is managed by an IC card. The IC card 26 receives the encrypted ECM via the communication unit 270 (ST101), decrypts the ECM encrypted by the ECM decryption unit 261, and stores it in the ECM memory 268. At this time, the viewing permission determination unit 265 determines the management destination of the usage condition file based on the management destination information of the usage condition file included in the ECM.
[0030]
When the management destination of the use condition file is designated as the receiver (ST102, NO), the storage process for the receiver is executed (ST200). The storage process for the receiver will be described later with reference to the flowchart shown in FIG. When the management destination of the use condition file is specified for the IC card (ST102, YES), storage processing for the IC card is executed (ST103 and after).
[0031]
First, the use condition determining unit 2603 checks whether or not the use condition file of the program is stored in the use condition memory 2606. For example, when the program (PPV program) has been purchased and a usage condition file is stored (ST103, YES), the usage condition is determined by the usage condition determination unit 2603 (ST104). If the usage count is limited as a usage condition, a useable (viewable) determination result is obtained if the usage is less than the limited count (ST104, YES), and the usage condition generation unit 2604 uses the usage condition. The file is updated (ST105). If the usage period is limited as a usage condition, a useable (viewable) determination result is obtained if the usage period is within the limited period (ST104, YES), and the usage condition generation unit 2604 uses the usage condition. The file is updated (ST105). The use condition determination unit 2603 stores the updated use condition file in the use condition memory 2606 (ST106). Subsequently, the scramble key is output via the communication unit 270 (ST107).
[0032]
On the other hand, when the program (PPV program) has not been purchased and the use condition file is not stored (ST103, NO), the viewability determination unit 265 determines the viewability based on the ECM and EMM ( ST108). When viewing is not possible (ST108, NO), viewing is not possible, etc. (ST111). If viewing is possible (ST108, YES), in addition to usage conditions such as viewing restrictions, purchase conditions such as PPV viewing fees are presented (ST109), and the willingness to purchase from the viewer is accepted. When purchase is instructed by the viewer (ST110, YES), a usage condition file is generated by the usage condition generation unit 2604 (ST105), and a viewing information file is generated and stored in the viewing information memory 266. The use condition determination unit 2603 stores the generated use condition file in the use condition memory 2606 (ST106). Subsequently, the scramble key is output via the communication unit 270 (ST107).
[0033]
Here, the explanation is made on the assumption that the program is PPV, but the process is substantially the same even if the program is a tier program, for example, monthly broadcasting. That is, it is determined whether or not there is a tier contract in viewing permission / inhibition determination (ST108), and usage conditions are presented (ST109). Here, the purchase procedure of ST110 may be passed, or it may be replaced with a process for requesting consent to the use conditions.
[0034]
Next, FIG. 3 will be described. The flowchart shown in FIG. 3 summarizes the case where the use condition file is managed by the receiver. Specifically, it is a flowchart showing details of ST200 in FIG. 2 (operation of the receiver main body and the IC card).
[0035]
First, the receiver 2 checks whether the usage condition file (encrypted usage condition file provided from the IC card) of the program is stored in the HDD 31. For example, if the program (PPV program) has been purchased and a usage rule file is stored (ST201, YES), the usage rule file is taken out of the HDD 31 and transferred to the IC card, and decrypted by the IC card. The use condition is determined by the use condition determining unit 2603 (ST203). When the usage count is limited as a usage condition, a useable (viewable) determination result is obtained if the usage is less than the limited count (ST203, YES), and the usage condition generation unit 2604 uses the usage condition. The file is updated (ST204). If the usage period is limited as a usage condition, a useable (viewable) determination result is obtained if the usage is within the limited period (ST203, YES). In this case, there is no need to update.
[0036]
The updated usage condition file is encrypted by the encryption unit 2605 (ST205), output from the IC card 26 to the receiver 2, and stored in the HDD 31 of the receiver 2. Subsequently, the scramble key is output via the communication unit 270 (ST206).
[0037]
On the other hand, when the program (PPV program) has not been purchased and the usage condition file is not stored (ST201, NO), the viewing permission / non-permission determining unit 265 determines whether or not viewing is possible based on the ECM and EMM ( ST207). When viewing is not possible (ST207, NO), viewing impossible is displayed (ST210). When viewing is possible (ST207, YES), in addition to usage conditions such as viewing restrictions, purchase conditions such as PPV viewing fees are presented (ST208), and the intention to purchase from the viewer is accepted. When the purchase is instructed by the viewer (ST209, YES), a usage condition file is generated by the usage condition generation unit 2604 (ST204), and a viewing information file is generated and stored in the viewing information memory 266. The generated use condition file is encrypted by the encryption unit 2605 (ST205), output from the IC card 26 to the receiver 2, and stored in the HDD 31 of the receiver 2. Subsequently, the scramble key is output via the communication unit 270 (ST206).
[0038]
Here, the explanation is made on the assumption that the program is PPV, but the process is substantially the same even if the program is a tier program, for example, monthly broadcasting. That is, it is determined whether or not there is a tier contract in the viewing permission / inhibition determination (ST207), and usage conditions are presented (ST208). Here, the purchase procedure of ST209 may be passed, or it may be replaced with a process for requesting consent of the use conditions.
[0039]
As described in the first embodiment, the security of the use condition file can be improved by designating the management destination of the use condition file of the program that needs to strictly control fraud.
[0040]
Next, as a second embodiment, a method will be described in which the broadcasting station 1 (center) side checks the management state of the usage condition file of the receiver to prevent fraud.
[0041]
Broadcast station 1 communicates with receiver 2 via modem 28. The broadcasting station 1 receives viewing information (PPV purchase record data) stored in the viewing information memory 266 of the IC card 26 from the receiver 2. This viewing information is transmitted from the receiver 2 to the broadcast station 1 at a frequency of once a month, for example, for payment of charges for PPV viewing. In some cases, an EMM may be received from the broadcasting station 1 side.
[0042]
Similar to the collection of viewing information, a part or all of the use condition file managed by the receiver 2 is transmitted from the receiver 2 to the broadcasting station 1. The broadcasting station 1 can prevent fraud by verifying the transmitted use condition file. In other words, it has been verified in the past whether the data of the usage condition file has been altered to a state different from the usage conditions at the time of broadcasting, or whether there is a usage condition file for content that does not have a purchase record or viewing contract record. Verify that there is no conflict with the data. For example, it is assumed that a content usage condition file for limiting the number of viewing times to 5 is provided when a certain content is provided (when a program is broadcast). The broadcast station collects part or all of the content usage condition file from the receiver and verifies the content usage condition file. At this time, if the number of viewing times has been tampered with other than 5 (viewing times 10 times, 20 times, etc.), it is determined to be illegal. Further, for example, if the number of times of use of a certain content verified in the past has decreased to 2 in the current inspection, it is determined to be illegal.
[0043]
Note that the timing of transmitting a part or all of the usage condition file from the receiver 2 to the broadcast station 1 is the case where the broadcast station 1 collects the viewing information when sending it together with the viewing information collection. There are cases where the timing of communication is specified regardless. Furthermore, if part or all of the use condition file is not transmitted from the receiver 2 even though the broadcasting station 1 requests transmission of a part or all of the use condition file, the designated timing of this communication Thereafter, some or all of the use condition files stored in the receiver 2 are disabled. Alternatively, the broadcast station 1 can specify that the service cannot be used. This makes it possible to construct a system that is strong against fraud.
[0044]
Further, by combining the second embodiment and the first embodiment already described, a system that is more resistant to fraud can be constructed.
[0045]
As described above, in the present invention, the broadcast station can specify the management destination of the use condition file. As a result, the security of the usage condition file can be improved by designating the management destination of the usage condition file of the program that needs to strictly control fraud. When managing the use condition file with the IC card, the use condition file is stored in the use condition memory 2606 (nonvolatile memory). In order to solve the shortage of the capacity of the use condition memory 2606, a PCMCIA type card or an SD type card having a large memory capacity can be used. As a result, it is possible to secure a memory for managing the usage condition file that is practically sufficient.
[0046]
In the above-described embodiment, the usage count (number of playbacks) and the usage time limit (reproduction time limit) related to viewing of a program have been described as usage conditions. However, the present invention is not limited to this. For example, the present invention can be applied to management in which a program stored in the HDD 31 is copied or moved. In other words, the broadcast station 1 can designate the IC card 26 as a use condition management means when management with improved security is required regarding whether or not copying or moving, the number of times, and selection of copy destination media are required. In the receiver 2 and the IC card 26 that have received this designation, the IC card 26 can manage copying and movement. That is, with respect to a program for which the IC card 26 is designated as the use condition management means, the receiver 2 cannot operate alone when copying or moving, and the IC card 26 determines whether copying or moving is possible.
[0047]
The operational effects of the present invention described above will be summarized below.
[0048]
(1) The broadcast station can designate the management destination of the use condition file. This makes it possible to manage content usage conditions with improved security in a pay broadcast receiver with a built-in recording / playback device.
[0049]
(2) The designation information for designating the management destination of the use condition file is arranged in the ECM and transmitted after being encrypted. Thereby, the designation information can be safely sent from the broadcasting station to the IC card.
[0050]
(3) A part or all of the use condition file is transmitted from the receiver to the broadcasting station. As a result, it is possible to grasp the usage conditions on the broadcast station side, and it is possible to monitor fraud of the pay broadcast receiver incorporating the recording / reproducing device on the broadcast station side.
[0051]
Note that the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention in the implementation stage. In addition, the embodiments may be appropriately combined as much as possible, and in that case, the combined effect can be obtained. Further, the above embodiments include inventions at various stages, and various inventions can be extracted by appropriately combining a plurality of disclosed constituent elements. For example, even if some constituent requirements are deleted from all the constituent requirements shown in the embodiment, the problem described in the column of the problem to be solved by the invention can be solved, and the effect described in the column of the effect of the invention Can be obtained as an invention.
[0052]
【The invention's effect】
According to the present invention, a broadcast reception processing system, a receiving device, an IC card applied to a receiving device, and a content usage rule file that can prevent fraud in the content usage rule file. Store Can provide a method.
[Brief description of the drawings]
FIG. 1 is a diagram showing a basic configuration of a broadcast reception processing system of the present invention.
FIG. 2 is a first flowchart for explaining processing in the IC card.
FIG. 3 is a second flowchart illustrating processing in the IC card.
[Explanation of symbols]
1 ... Broadcasting station
2 ... Receiver
3 ... Satellite
11 ... Viewer information memory
12 ... Viewer Management Department
13. Modem
14 ... Scrambler
15 ... ECM generation and encryption unit
16 ... EMM generation and encryption unit
17: Multiple processing section
18 ... Antenna
21 ... Antenna
22 ... Channel selection department
23. Separation part
24 ... Device key memory
25. Encryption communication part
26 ... IC card
27 ... Descrambler
28 ... modem
29 ... MPEG decoder
31 ... HDD
32 ... Switching device
261 ... ECM decoding unit
262 ... EMM decoding unit
263 ... Kmi memory
H.264 ... EMM memory
265 ... Viewing availability determination unit
266 ... Viewing information memory
267 ... Device key memory
268 ... ECM memory
2601: Decoding unit
2602: Clock and calendar
2603... Usage condition determination unit
2604 ... Usage condition generator
2605: Cryptographic part
2606 ... Usage condition memory

Claims (6)

A broadcast reception processing system including an IC card and a receiving device that receives the IC card and receives broadcast waves,
The receiving device is:
Broadcast receiving means for receiving a broadcast wave including content, a content usage condition file that defines usage conditions of the content, and designation information that specifies a storage location of the content usage condition file;
A first transmission means for transmitting the content usage rule file and the specification information received by the broadcast receiving unit to the IC card,
A first receiving means for receiving the content usage rule file transmitted from the IC card,
First storage means for storing the content usage rule file received by the first receiving means,
With
The IC card is
A second receiving means for receiving the content usage rule file and the specification information transmitted from the receiving device,
Based on the designation information received by said second receiving means, the storage destination of the content usage rule file that is found is the receiving device instructs the storage of the content usage rule file to the receiving device, If it is found storage destination of the content usage rule file is the IC card, and the storage destination instruction means for instructing storage of the content usage rule file in the IC card,
When stored in the receiving device is instructed by the storage destination instruction means, and second transmission means for transmitting the content use condition file received by the second receiving unit to the receiving device,
When the storage in the IC card is instructed by the storage destination instruction means, second storage means for storing the content usage rule file received by the second receiving means,
A broadcast reception processing system comprising: The content usage rule files, information indicating the number of uses of the content, information indicating the usage period of the content, information indicating a copy restriction of the content, and at least one information among the information indicating the movement limit of the content The broadcast reception processing system according to claim 1, further comprising: The broadcast wave includes encrypted program information,
The program information includes the designation information .
The broadcast reception processing system according to claim 1 or 2. An IC card applied to a receiving device that receives broadcast waves,
Receiving means for receiving a content usage condition file and designation information transmitted from the receiving device;
Based on the designation information received by the receiving means, the storage destination of the content usage rule file that is found is the receiving device instructs the storage of the content usage rule file to the receiving apparatus, the contents usage When the storage destination of the condition file is found to be the IC card, and the storage destination instruction means for instructing storage of the content usage rule file in the IC card,
When stored in the receiving device is instructed by the storage destination instruction means, and transmitting means for transmitting the content use condition file received by the receiving unit to the receiving device,
When the storage in the IC card is instructed by the storage destination instruction means, and storage means for storing the content usage rule file received by the receiving means,
An IC card characterized by comprising: The receiving device receives the broadcast wave including the content, the content usage condition file that defines the usage condition of the content, and the designation information that specifies the storage location of the content usage condition file,
The receiving device transmits the content usage rule file and the specification information thus received to the IC card,
The IC card receives the content usage rule file and the specification information transmitted from the receiving device,
The IC card, based on the specifying information received from the receiving device, the storage destination of the content usage rule file to recognize that it is the receiving device, the receiving the content usage rule file received from the receiving device send apparatus, the receiving apparatus receives the content usage rule file sent from the IC card and stored,
The IC card, based on the specifying information received from the receiving device, a storage destination of the content usage conditions file recognizes that the IC card, storing the content usage rule file received from the receiving device ,
A content usage condition file storage method characterized by the above. The IC card receives the content usage condition file that defines the usage conditions of the content transmitted from the receiving device, and the designation information that specifies the storage location of the content usage condition file,
The IC card, based on the specifying information received from the receiving device, the storage destination of the content usage rule file to recognize that it is the receiving device, the receiving the content usage rule file received from the receiving device send apparatus, based on the specifying information received from the receiving device, a storage destination of the content usage conditions file recognizes that the IC card, storing the content usage rule file received from the receiving device ,
A content usage condition file storage method characterized by the above.

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