JP2003143571A - Broadcast reception system, reception device, ic card applied to reception device, and method for managing content use condition file - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an IC card which prevents false use (forging like) of a content use condition file included in a broadcasting wave transmitted from a broadcasting station. SOLUTION: An IC card (26) applied to a reception device (2) for receiving the broadcasting wave transmitted from a broadcasting station is provided with use condition file management means (265 and 2606) which transmit the content use condition file to the reception device when recognizing the reception device as the management destination of the content use condition file on the basis of management destination designating information included in the broadcasting wave and hold the content use condition file in themselves when recognizing the IC card as the management destination of the content use condition file.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a broadcast reception processing system and a receiver for receiving and processing a broadcast wave broadcast from a broadcasting station. The present invention also relates to an IC card applied to a receiving device that receives and processes a broadcast wave broadcast from a broadcasting station. Furthermore, the present invention relates to a method of managing a content use condition file included in a broadcast wave broadcast from a broadcast station.

[0002]

2. Description of the Related Art A broadcast wave broadcast by a broadcasting station includes content and a content usage rule file that defines usage conditions for this content. The content usage condition file limits the usage of the content, for example, the number of playbacks and the playback deadline.

[0003]

The broadcast wave broadcast by the broadcasting 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 this content use condition file may be tampered with. If the content usage rule file is tampered with, the content is reproduced indefinitely, which is a serious problem for pay broadcasters who provide the content.

The object of the present invention has been made in view of the above-mentioned circumstances, and is applied to a broadcast receiving processing system, a receiving device, and a receiving device capable of preventing fraud in a content use condition file. Another object of the present invention is to provide an IC card and a method of managing a content use condition file.

[0005]

In order to solve the above problems and achieve the object, management of a broadcast reception processing system of the present invention, an IC card applied to the reception device, a broadcast reception processing device, and a content use condition file The method is configured as follows.

(1) A broadcast reception processing system according to the present invention is an broadcast reception processing system including an IC card and a receiving device that receives the IC card and receives a broadcast wave. A content reception condition file that defines the use condition of the content, and a broadcast receiving unit that receives a broadcast wave including management destination designation information that designates a management destination of the content utilization condition file,
First transmitting means for transmitting the content use condition file and management destination designation information received by the broadcast receiving means to the IC card, and first receiving means for receiving the content use condition file transmitted from the IC card. And a first storage unit for storing the content use condition file received by the first receiving unit,
The IC card uses the content based on the second receiving means for receiving the content use condition file and the management destination specifying information transmitted from the receiving device, and the management destination specifying information received by the second receiving means. When it is determined that the management destination of the condition file is the receiving device, the management device instructs the receiving device to manage the content usage condition file, and when it is determined that the management destination of the content usage condition file is this IC card, the content usage When a management destination instructing means for instructing the IC card to manage a condition file and management in the receiving device is instructed by the management destination instructing means, the content use condition file received by the second receiving means is displayed. The second transmitting means for transmitting to the receiving device and the IC by the management destination instructing means.
Second storage means for storing the content use condition file received by the second receiving means when management by a card is instructed.

(2) I applied to the receiving apparatus of the present invention
The C card is an I applied to a receiving device that receives broadcast waves.
A C card, receiving means for receiving the content use condition file and management destination designation information transmitted from the receiving device, and a management destination of the content use condition file based on the management destination designation information received by the receiving device. When it is determined that the content use condition file is the receiving device, the receiving device is instructed to manage the content use condition file. When the management destination of the content use condition file is this IC card, the content use condition file is managed. A management destination instructing means for instructing the IC card, and a transmitting means for transmitting the content use condition file received by the receiving means to the receiving device when the management destination instructing means instructs the management by the receiving device. When the management destination instructing means instructs management by this IC card, And a storage means for storing the received content usage rule file by.

(3) In the content usage rule file management method according to the present invention, a receiving device specifies a content, a content usage rule file defining usage rules for the content, and a management destination for designating a management destination of the content usage rule file. A broadcast wave including designated information is received, the content use condition file and management destination designation information received by the reception device are transmitted to an IC card, and the IC card is transmitted from the reception device. When receiving the designation information and recognizing that the management destination of the content usage condition file is the receiving device based on the management destination designating information received by the IC card, the received content usage condition file is transmitted to the receiving device. , A content usage condition file transmitted from the IC card to the receiving device. Receives Le stored, based on the management destination specifying information IC card received, the management target content usage condition file when recognizing that it is this IC card, and stores the received content usage rule file.

(4) The receiving device of the present invention is a broadcast receiving means for receiving a broadcast wave provided from a broadcasting station and including a content and a content use condition file defining a use condition of this content, and the broadcast. The storage unit stores the content use condition file received by the receiving unit, and the transmitting unit transmits the content use condition file stored in the storage unit to the broadcasting station side.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a diagram showing the basic configuration of the 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 having a built-in one-chip microcomputer (CPU, ROM, RAM, nonvolatile memory, serial I / O, etc.).

The broadcasting station 1 scrambles (encrypts) the signal of the pay broadcasting program by the scrambler 14 and broadcasts it so that only the subscribers can view it. Program information including the scramble key Ks used when scrambling (encrypting) the program and the viewing conditions of the program (hereinafter referred to as EC
M) is generated by the ECM generation / encryption unit 15, multiplexed on the program by the multiplexing processing unit 17, and broadcast from the antenna 18. E
The CM is encrypted so that it cannot be tampered with, and the key used for encryption is called the work key Kw. On the other hand, for individual viewers,
Contract type information such as program type, encrypted ECM
Individual information (hereinafter referred to as EMM) including a work key Kw used for decrypting is generated by the EMM generation / encryption unit 16, multiplexed by the multiplexing processing unit 17 with the broadcast signal, and antenna 18
Broadcast from. This EMM is also encrypted with the master key Kmi so that it cannot be tampered with. 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.

The broadcast wave broadcast from the antenna 18 of the broadcasting 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 the EMM decoding unit 2 in the IC card 26.
Sent to 62. The EMM decryption unit 262 decrypts the EMM encrypted using the master key kmi stored in the kmi memory 263, and stores it in the EMM memory 264. The work key Kw included in the decrypted EMM is E
It is provided to the CM decoding unit 261. On the other hand, the receiver 2 also separates the encrypted ECM sent from the broadcasting station 1 from the separation unit 2
Separate at 3. 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 is an EC encrypted using the work key Kw.
M is decoded and temporarily stored in the ECM memory 268. The viewability determination unit 265 uses the ECM and EMM to make a viewability determination, and when the contracted program (or channel) can be viewed, a program for descrambling (decoding) the program from the ECM. The scramble key Ks is taken out, and the descrambler 27 is controlled and viewed. In addition,
The update of the scramble key transmitted by the ECM is every few seconds, and the above processing is performed each time it is updated.

The IC card 26 and the receiver 2 have a shared device key. The IC card 26 uses the shared device key stored in the device key memory 267 to encrypt the scramble key and outputs it to the receiver 2. The receiver 2 uses the shared device key stored in the device key memory 24 to decrypt the scramble key encrypted by the encryption communication unit 25. This gives I
An IC card 2 that prevents the raw data scramble key from being exposed on the interface between the C card 26 and the receiver 2.
6 has a viewing information memory 266 in order to support a broadcasting system called pay-per-view (PPV) in which purchase or non-purchase can be selected for each program. If the viewer selects the pay-per-view program and decides to purchase it, IC
The 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 and controls the descrambler so that the program can be viewed. This viewing information is
It is collected by the broadcasting station 1 through the 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.

Further, the receiver 2 includes a data storage device such as a hard disk drive (HDD) 31. The HDD 31 stores pay broadcast programs in the scrambled state. The receiver 2 executes a charging process when the accumulated pay broadcast programs are reproduced. That is, the receiver 2 is compatible with a broadcasting service that allows the viewer to select whether or not to purchase when reproducing a PPV program or the like. Further, the receiver 2 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.

Further, the IC card 26 has a decryption unit 260.
1, clock and calendar 2602, usage condition determination unit 26
03, a usage condition generation unit 2604, an encryption unit 2605, and a usage condition memory 2606.

Here, a broadcasting service with usage conditions will be described. The usage conditions mentioned here include restrictions on the number of times the content included in the broadcast is used (viewing times), a content usage deadline (playback deadline), a content copy restriction,
And content movement restrictions. The limit on the number of times of use (the number of times of viewing) is the number of times the content stored in the HDD 31 can be played back, and information indicating such a limit is included in the ECM, for example, and the viewing permission / inhibition determination unit 265. Is given to the usage condition generating unit 2604 from The usage deadline (playback deadline) is a deadline during which the content stored in the HDD 31 can be played back, and information indicating such a restriction is included in the ECM, for example, and is used by the viewability determination unit 265. Condition generation unit 2604
Given to. What is content copy restriction? HDD3
1 is the number of times the content accumulated can be copied (copy not allowed, copy allowed only once, copy allowed without limitation, etc.). Information indicating such a restriction is assumed to be included in the ECM, for example. The availability determination unit 265 gives the usage condition generation unit 2604. The content movement restriction is whether or not the content stored in the HDD 31 can be moved, and information indicating such a restriction is, for example, EC.
It is assumed that the content is included in M, and is provided from the viewability determination unit 265 to the usage condition generation unit 2604.

For example, when the program (content) is a PPV program and the number-of-reproductions information indicates the number of views = 5, when the program is purchased at the first reproduction, it is presented to the viewer as a condition for the purchase. . As in the case of real-time broadcasting, before being presented to the viewer as a purchase condition, whether or not the product can be purchased is determined by the viewability determination unit 265, and only when the determination that the purchase is possible is obtained, the above condition is satisfied. Is presented. When the viewer accepts the condition that the number of viewing times = 5 and purchases, the viewing information is stored in the viewing information memory 266. Further, the usage rule generating unit 2604 generates a usage rule file indicating that this 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 the scramble key via the communication unit 270. Then, the usage rule file generated by the usage rule generation unit 2604 is encrypted by the encryption unit 2605 and then output from the IC card 26 to the HDD 31. The encrypted usage rule file is stored in the HDD 31 in association with the already stored programs (contents).

Next, when this program is reproduced again, there is an encrypted usage rule file associated with the program (content). In that case, the receiver 2 retrieves the usage rule file from the HDD 31 and retrieves it from the IC card 26.
Hand over to. Next, in the IC card 26, the decryption unit 260
1 decrypts the usage rule file, and the usage rule determination unit 260
3 determines the number of times of reproduction. Here, since the number of viewing times of the usage rule file is the first time, the viewing limit of the program is 5 times or less, and the program can be viewed. When the viewing is possible, the usage condition determining unit 2603 prompts the viewing availability determining unit 265 to output the scramble key, and the viewing availability determining unit 265 outputs the scramble key to the descrambler 27 via the communication unit 270. It should be noted that the information that the viewing restriction of the program is 5 times may be described in the file when the first usage rule file is generated as described above, or the viewing count information described in the ECM can be viewed. The configuration may be provided from the determination unit 265 to the usage condition determination unit 2603.

Information that the content has been viewed again by the usage rule determining unit 2603 is given to the usage rule generating unit 2604, and the usage rule file is updated. In other words, the usage rule file is modified to the effect that the number of viewing times = the second time. continue,
The usage rule file generated by the usage rule generation unit 2604 is encrypted by the encryption unit 2605 and output to the HDD 31. This encrypted usage rule file is associated with programs (contents) that have already been stored, and HD
It is stored in D31.

The above description is an example in which the number of reproductions is limited, but the reproduction time limit may be limited. For example,
Consider a case where the reproduction deadline is February 5, 2010, which is in the future from the reception time. The reproduction time limit information is arranged in the ECM, for example, like the reproduction frequency information, and is presented to the viewer when purchasing the program as a condition for the purchase. As with the playback count limit, before the presentation to the viewer as a purchase condition, whether or not the purchase is possible is determined by the viewability determination unit 265, and only when the purchase availability is obtained, the above condition is satisfied. Is presented. When the viewer accepts the conditions and purchases, the viewing information is stored in the viewing information memory 266. Furthermore, the usage condition generation unit 2604
Generates a usage rule file indicating that the reproduction deadline of this program is February 5, 2010. At the same time, the viewing possibility determination unit 265 outputs the scramble key to the descrambler 27 via the communication unit 270. Then, the usage rule file generated by the usage rule generation unit 2604 is encrypted by the encryption unit 2605 and output to the HDD 31.
The encrypted usage rule file is stored in the HDD 31 in association with the already stored programs (contents).

Next, when this program is reproduced again, there is an encrypted use condition file associated with the program (content). In that case, the receiver 2 retrieves the usage rule file from the HDD 31 and retrieves it from the IC card 26.
Hand over to. Next, in the IC card 26, the decryption unit 2601 decrypts the usage rule file, and the usage rule determination unit 2603 determines the reproduction deadline. Here, since the reproduction time limit of the usage rule file is February 5, 2010, the time and date indicated by the clock and calendar 2602 are compared with each other, and the content can be viewed within the time limit. When the viewing is possible, the viewing condition determining unit 2603 prompts the viewing availability determining unit 2603 to output the scramble key to the viewing availability determining unit 265, and the viewing availability determining 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 rule file (reproduction time limit information in this case) is not updated with viewing. Also,
In this example, the timepiece and the calendar 2602 are shown in the IC card 26, but the present invention is not limited to this. For example, the receiver 2 may have the functions of a clock and a calendar, 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 tampered with.

As described above, the usage rule file is stored in the receiver 2 (HDD 31) outside the IC card 26. Therefore, the IC card 26 cannot manage the copying or moving of the usage rule file. Therefore, if the receiver body side is illegally modified, the number of times of viewing and the time limit of viewing may be fooled. That is, there is a problem that the security of the usage rule file is weak.

Therefore, in the broadcast receiving processing system of the present invention, in order to solve the above-mentioned problem, the broadcasting station specifies the management destination of the usage rule file and stores the usage rule file in the designated management destination. To do. As a result, the security of the usage rule file can be improved. Hereinafter, the first embodiment will be described.

The IC card 26 and the receiver 2 are management destinations of the usage conditions, for example. When the IC card 26 is designated as the management destination of the usage rule file, the usage rule file is the usage rule memory 2606 in the IC card 26.
Stored in. 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.

The usage conditions transmitted by the ECM are the number of times of use and the expiration date (either one or both). In the present invention, management destination designation information for designating the management destination of the usage rule file is added to the ECM. According to the management destination specification information of the usage rule file, the management destination of the usage rule file is I
It is specified in the C card 26 (usage condition memory 2606) or the receiver 2 (HDD 31). When the receiver 2 is the management destination, the usage rule file is encrypted and then H
It is stored in the DD 31.

Strictly speaking, there are a case where the management destination is not designated by the broadcasting station, a case where the IC card 26 is designated as the management destination, and a case where the receiver 2 is designated as the management destination. For example, the IC card is set as the management destination of the usage rule file of a program that requires strict control of fraud. The management destination of the usage rule file of the program that needs to be cracked down is set in the receiver. The management destination of the program use condition file that does not need to be cracked down is not specified.

2 and 3 are flow charts for explaining the processing in the IC card.

First, FIG. 2 will be described first. The flowchart shown in FIG. 2 mainly shows a case where the received program is a PPV program and the usage rule file is managed by an IC card. The IC card 26 receives the encrypted ECM via the communication unit 270 (ST1
01), the ECM encrypted by the ECM decryption unit 261
Is decoded and stored in the ECM memory 268. At this time,
The viewability determining unit 265 determines the management destination of the usage rule file based on the management destination information of the usage rule file included in the ECM.

When the management destination of the usage rule file is designated to the receiver (ST102, NO), the storing 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 IC card is designated as the management destination of the usage rule file (ST10
(2, YES), the storing process for the IC card is executed (ST103 and later).

First, the usage rule determining unit 2603 checks whether the usage rule file for the program is stored in the usage rule memory 2606. For example, when the program (PPV program) has been purchased and the usage rule file is stored (ST103, YE
S), the usage rule is determined by the usage rule determination unit 2603 (ST104). When the number of times of use is limited as a use condition, if the number of times of use is equal to or less than the limited number of times, a determination result of availability (viewable) is obtained (ST104, Y).
ES), the usage rule file is updated by the usage rule generation unit 2604 (ST105). When the expiration date is limited as a condition of use, if the usage is within the limited expiration date, a determination result of availability (viewable) is obtained (ST
104, YES), and the usage rule file is updated by the usage rule generation unit 2604 (ST105). The usage rule determining unit 2603 stores the updated usage rule file in the usage rule memory 2606 (ST106). continue,
The scramble key is output via the communication unit 270 (S
T107).

On the other hand, when the program (PPV program) is not purchased and the usage rule file is not stored (NO in ST103), the viewing availability determination unit 265 determines the viewing availability based on the ECM and EMM. (ST10
8). When the viewing is not possible (ST108, NO), the viewing is not possible (ST111). If viewing is possible (YES in ST108), purchase conditions such as PPV viewing charges are presented in addition to usage conditions such as viewing restrictions (ST10).
9), the purchase intention from the viewer is accepted. When the viewer instructs purchase (ST110, YES),
A usage rule file is generated by the usage rule generation unit 2604 (ST105), and a viewing information file is generated and stored in the viewing information memory 266. The usage rule determining unit 2603 stores the generated usage rule file in the usage rule memory 2606 (ST106). continue,
The scramble key is output via the communication unit 270 (S
T107).

Here, the explanation is made assuming that the program is PPV, but the processing is almost the same even if the program is, for example, a tier program which is a monthly broadcast. That is, it is determined in the viewing availability determination (ST108) whether there is a tier contract, and the usage conditions are presented (ST10).
9). Here, the purchase procedure in ST110 may be passed, or the process may be replaced with a process for asking for consent to the usage conditions.

Next, FIG. 3 will be described. The flowchart shown in FIG. 3 is mainly focused on the case where the usage rule file is managed by the receiver. Specifically, it is a flowchart showing the details of ST200 in FIG. 2 (operations of the receiver body and the IC card).

First, the receiver 2 checks whether or not the HDD 31 stores a usage rule file (encrypted usage rule file provided from the IC card) for the program. For example, when the program (PPV program) is already purchased and the usage rule file is stored (ST201, YES), the usage rule file is the HDD.
31 is taken out, passed to the IC card, decrypted by the IC card (ST202), and the use condition determining unit 2603.
The usage conditions are determined by (ST203). When the number of times of use is limited as the use condition, if the number of uses is equal to or less than the limited number of times, a useable (viewable) determination result is obtained (ST203, YES), and the use condition generating unit 260.
4 updates the usage rule file (ST20
4). When the use period is limited as a use condition, a use available (viewable) determination result is obtained if the use is within the limited period (ST203, YES). In this case, there is no need to update.

The updated usage rule file is stored in the encryption unit 2
Encrypted by 605 (ST205), IC card 2
6 is output to the receiver 2 and stored in the HDD 31 of the receiver 2. Then, the scramble key is output via communication section 270 (ST206).

On the other hand, when the program (PPV program) is not purchased and the usage rule file is not stored (ST201, NO), the viewability determination unit 265 determines the viewability based on the ECM and EMM. (ST20
7). When the viewing is not possible (ST207, NO), the viewing is not possible (ST210). When viewing is possible (YES in ST207), purchase conditions such as PPV viewing charges are presented in addition to usage conditions such as viewing restrictions (ST20).
8) The purchase intention from the viewer is accepted. When the viewer instructs the purchase (ST209, YES),
A usage rule file is generated by the usage rule generation unit 2604 (ST204), and a viewing information file is generated and stored in the viewing information memory 266. The generated usage rule 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. Then, the scramble key is output via the communication unit 270 (ST2
06).

Here, the description is made assuming that the program is PPV, but the process is substantially the same even if the program is, for example, a tier program that is a monthly broadcast. That is, it is determined in the viewing availability determination (ST207) whether there is a tier contract, and the usage conditions are presented (ST20).
8). Here, the purchase procedure in ST209 may be passed, or the process may be replaced with a process for asking for consent to the usage conditions.

As described in the first embodiment, the security of the usage rule file can be improved by designating the IC card as the management destination of the usage rule file of the program for which the illegality must be strictly controlled. You can

Next, as a second embodiment, the broadcasting station 1
A method will be described in which the (center) side checks the management status of the usage rule file of the receiver to prevent fraud.

The broadcasting station 1 receives the receiver 2 via the modem 28.
Communicate with. Broadcasting station 1 uses receiver 2 to IC card 26
Viewing information stored in the viewing information memory 266 (PPV
Purchase record data). This viewing information is PP
In order to settle charges for V viewing, for example, it is transmitted from the receiver 2 to the broadcasting station 1 once a month. In some cases, the EMM may be received from the broadcasting station 1 side.

Similar to the collection of the viewing information, a part or all of the usage rule file managed by the receiver 2 is transmitted from the receiver 2 to the broadcasting station 1. In broadcasting station 1,
By verifying the transmitted usage rule file, fraud can be prevented. In other words, it was verified in the past whether the data of the usage rule file has been tampered with in a state different from the usage rule when it was broadcast, or whether there is a usage rule file for the content that has no purchase record or viewing contract record. Verify that there is no contradiction with the data. For example, when providing certain content (when broadcasting a program),
It is also assumed that a content usage condition file for limiting the number of viewing times to 5 is also provided. The broadcasting station side collects a part or all of this content use condition file from the receiver and verifies this content use condition file. At this time, if the number of viewing times has been tampered with other than 5 (10 times, 20 times of viewing, etc.), it is determined to be illegal.
Further, for example, if the number of times the content has been used for a certain content that was verified in the past was three times, but it has been reduced to two times in this inspection, it is determined to be illegal.

Regarding the timing of transmitting a part or all of the usage rule file from the receiver 2 to the broadcasting station 1, it is possible to send it at the time of collecting the viewing information and when the broadcasting station 1 sends the viewing information. The timing of communication may be specified regardless of collection. Furthermore, even if the broadcasting station 1 requests the transmission of part or all of the usage rule file, if some or all of the usage rule file is not transmitted from the receiver 2, the specified time for this communication After that, some or all of the usage rule files stored in the receiver 2 are disabled. Alternatively, the broadcast station 1 can specify that it is disabled. This makes it possible to build a system that is strong against fraud.

By combining the second embodiment with the first embodiment already described, it is possible to construct a system that is more resistant to fraud.

As described above, in the present invention, the broadcast station can specify the management destination of the usage rule file. As a result, by designating the IC card as the management destination of the usage rule file of the program that requires strict control of fraud,
The security of the usage rule file can be improved. When the usage rule file is managed by the IC card, the usage rule file is stored in the usage rule memory 2606 (nonvolatile memory). In order to solve the shortage of the capacity of the condition-of-use memory 2606, a PCMCI with a large memory capacity
It is also possible to use an A type card or an SD type card. This makes it possible to secure a practically sufficient memory for managing the usage rule file.

Further, in the above embodiment, the number of times of use (the number of times of reproduction) and the time limit of use (reproduction time limit) regarding viewing and listening of a program have been described as the conditions of use, but the present invention is not limited to this. For example, it can be applied to the management of copying or moving the programs stored in the HDD 31. In other words, when management with improved security is required with respect to permission / prohibition of copying and moving, the number of times, and selection of copy destination media, the broadcasting station 1 can specify the IC card 26 as a use condition managing means. 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, for the program for which the IC card 26 is designated as the usage condition management means, the receiver 2 cannot operate alone when copying or moving, and the IC card 2
6 determines whether copying or moving is possible.

The operational effects of the present invention described above will be summarized below.

(1) The broadcast station can specify the management destination of the usage rule file. As a result, it becomes possible to manage content use conditions with improved security in a pay broadcast receiver having a built-in recording / reproducing device.

(2) Designation information designating the management destination of the usage rule file is placed in the ECM, and is encrypted and transmitted. As a result, the designated information can be safely sent from the broadcasting station to the IC card.

(3) Part or all of the usage rule file is transmitted from the receiver to the broadcasting station. As a result, the broadcasting station side can grasp the usage conditions, and the broadcasting station side can monitor the illegality of the pay broadcasting receiver having the recording / reproducing device built therein.

The invention of the present application is not limited to the above-described embodiment, and can be variously modified at the stage of implementation without departing from the spirit of the invention. In addition, the respective embodiments may be combined as appropriate as much as possible, in which case the combined effects can be obtained. Further, the 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 elements are deleted from all the constituent elements shown in the embodiment, the problem described in the section of the problem to be solved by the invention can be solved, and the effect described in the section of the effect of the invention If you get
A configuration in which this component is deleted can be extracted as an invention.

[0052]

According to the present invention, a broadcast reception processing system capable of preventing illegal use of a content use condition file, a receiving device, and an IC card applied to the receiving device,
Also, it is possible to provide a method of managing the content use condition file.

[Brief description of 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 illustrating a process in an IC card.

FIG. 3 is a second flowchart for explaining the 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 unit 18 ... Antenna 21 ... Antenna 22 ... Channel selection 23 ... Separation section 24 ... Device key memory 25 ... Encryption communication unit 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 264 ... EMM memory 265 ... Viewability 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 generation unit 2605 ... Cryptographic unit 2606 ... Usage condition memory

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) H04L 9/08 G06K 19/00 Q 5C064 H04N 7/08 H04N 7/08 Z 5J104 7/081 5/91 P // H04N 5/91 F Term (reference) 5B017 AA06 BB09 BB10 CA16 5B035 AA13 BB09 BC00 CA11 5B058 CA27 KA02 KA04 KA08 KA31 KA35 5C053 FA13 FA20 FA23 GA11 GB06 GB37 JA03 AB03 AC23 CA2310A23 AB03 AB23 DA13 DB10 5C064 BA01 BB02 BC06 BC17 BC18 BC22 BC23 BC25 BD02 BD08 BD09 CA14 CB08 CC04 5J104 AA01 BA03 NA02 NA35 NA37 PA05

Claims (8)

[Claims] 1. A broadcast reception processing system including an IC card and a receiving device which receives the IC card and receives a broadcast wave, wherein the receiving device defines a content and a content use condition defining a use condition of the content. A broadcast receiving means for receiving a broadcast wave including a file and management destination designating information for designating a management destination of the content utilization condition file; and a content utilization condition file and management destination designating information received by the broadcast receiving means for the IC. A first transmitting means for transmitting to the card; a first receiving means for receiving the content use condition file transmitted from the IC card; and a first storing means for storing the content use condition file received by the first receiving means. 1 storage means, wherein the IC card is a content transmitted from the receiving device. Second receiving means for receiving the usage condition file and management destination designation information, and the management destination of the content usage conditions file is the receiving device based on the management destination designation information received by the second receiving means. When it is determined, the management device of the content usage condition file is instructed to the receiving device, and when it is determined that the management destination of the content usage condition file is this IC card, the management of the content usage condition file is performed by this I.
When the management device is instructed to manage by the receiving device, the content destination condition file received by the second receiving device is transmitted to the receiving device. Second
And a second storage means for storing the content use condition file received by the second receiving means when the management destination instructing means instructs the management by the IC card. A broadcast reception processing system characterized by the above. 2. The content use condition file includes at least one of information indicating the number of times the content has been used, information indicating a content use deadline, information indicating a content copy restriction, and information indicating a content transfer restriction. The broadcast reception processing system according to claim 1, further comprising: 3. The broadcast reception processing system according to claim 1, wherein the broadcast wave includes encrypted program information, and the program information includes the management destination designation information. 4. I applied to a receiving device for receiving broadcast waves
A C card, a receiving unit that receives the content usage rule file and management destination designation information transmitted from the receiving device, and a management destination of the content usage rule file based on the management destination designation information received by the receiving unit. When it is determined that the content use condition file is the receiving device, the receiving device is instructed to manage the content use condition file. When the management destination of the content use condition file is this IC card, the content use condition file is managed. Management destination instruction means for instructing the IC card, and transmission means for transmitting the content use condition file received by the reception device to the reception device when the management destination instruction device instructs management by the reception device. When the management destination instructing means instructs management by this IC card, the reception An IC card, comprising: a storage unit that stores the content use condition file received by the unit. 5. The receiving device receives a broadcast wave including content, a content use condition file defining use conditions of this content, and management destination designation information designating a management destination of this content use condition file, The device transmits the received content use condition file and management destination designation information to an IC card, the IC card receives the content use condition file and management destination designation information transmitted from the receiving device, and the IC card is , Based on the received management destination designation information,
When recognizing that the management destination of the content use condition file is the receiving device, the received content use condition file is transmitted to the receiving device, and the receiving device receives the I
The content use condition file transmitted from the C card is received and stored, and the IC card, based on the received management destination designation information,
A method of managing a content use condition file, characterized in that when the management destination of the content use condition file is recognized as the IC card, the received content use condition file is stored. 6. The IC card receives a content usage condition file that defines usage conditions of content transmitted from the receiving device, and management destination designation information that designates a management destination of the content usage condition file, The IC card, based on the received management destination designation information,
When recognizing that the management destination of the content use condition file is the receiving device, the received content use condition file is transmitted to the receiving device, and the management destination of the content use condition file is transferred to the receiving device based on the received management destination designating information. A method of managing a content use condition file, which stores a received content use condition file when it is recognized as an IC card. 7. A broadcast receiving means for receiving a broadcast wave provided from a broadcasting station and containing a content and a content use condition file defining a use condition of the content, and use of the content received by the broadcast receiving means. A receiving device comprising: storage means for storing a condition file; and transmitting means for transmitting the content use condition file stored in the storage means to the broadcast station side. 8. A broadcast wave including a content and a content use condition file defining a use condition of this content provided from a broadcasting station is received, and the received content use condition file is stored and stored. A content usage condition file management method comprising: transmitting a content usage condition file to the broadcast station side.