JP2007181224A - Digital broadcast receiving method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a digital broadcast receiver, a digital broadcasting system and a broadcasting apparatus in which it can be controlled whether content can be viewed without depending on the digital broadcast receiver. <P>SOLUTION: Regardless of whether a radio communication function of a digital broadcast receiver 10 is valid/invalid or internal viewing setting, in accordance with identification data contained in an EMM transmitted from a broadcasting apparatus 20, it is controlled whether a restricted receiving function of the digital broadcast receiver 10 is valid/invalid (viewing is possible/impossible). <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to digital broadcasting, and more particularly, to a digital broadcasting system, a digital broadcasting receiving device, a broadcasting device, and a management device that perform broadcast using a limited reception method.

  2. Description of the Related Art A cellular phone as a digital broadcast receiving device is known that incorporates a TV tuner (for example, Patent Document 1 below). Furthermore, terrestrial digital broadcasting and satellite digital broadcasting are scheduled for mobile phones, and these digital broadcastings support a so-called conditional access system (D-CAS). The conditional access system scrambles the broadcast wave and broadcasts, for example, pays a viewing fee for each program (content) unit (pay per view; PPV), and allows viewing to a contractor. On the other hand, it is a system that prohibits viewing on the receiver side.

  Whether or not to descramble this limited reception service (program) is determined by the IC card inserted in the receiver. The IC card performs processing for determining whether or not to view, and processing for decrypting EMM (Entitlement Management Message) and ECM (Entitlement Control Message).

  EMM and ECM are broadcast by broadcast waves as TS packets. The TS packet includes all section information such as contents, ECM, EMM, and EPG.

  The EMM is a message transmitted for each limited receiver and is transmitted as an EMM section. In the EMM section, multiple EMM units addressed to each receiver are multiplexed, and for receivers that can receive limited reception, the card ID held in the IC card is compared with the card ID described in the EMM unit. Take out the EMM main unit for the receiver itself.

  The EMM main body contains a card ID, a work key for canceling ECM, and function information related to tier / PPV (Pay Per View). The ECM is a message common to all limited receivers, and includes a scramble key for descrambling and information necessary for PPV viewing determination. EMM and ECM are encrypted by a different encryption method from scramble.

  When descrambling, the IC card decrypts the EMM body for each subscriber described in the broadcast wave with the master key held by the IC card, and takes out the card ID and work key contained in the EMM body. The work key is a key used to decrypt the ECM. If the card ID included in the EMM body matches the card ID of the IC card, the ECM described in the broadcast wave is decrypted with the work key, the scramble key is extracted and passed to the receiver. The receiver descrambles the scrambled broadcast wave with the scramble key.

  The functions of the conditional access system include contract information management and viewing information update. The management of the contract information is a function for determining whether or not the currently received channel is contracted. When a PPV program is purchased, the information is stored in the IC card as viewing information.

  Viewing information is sent to the broadcaster's viewing information collection center, but viewing information is not sent when purchasing a PPV, and viewing information is received when a predetermined time specified by EMM is reached or a card is inserted. (Update of contractor information at the center) is performed (hereinafter referred to as “postpaid PPV”).

  By the way, since digital broadcast receivers, especially mobile phones, are stolen or lost, subscribers who have stolen or lost mobile phones usually change their models or cancel contracts with mobile carriers. The lost mobile phone cannot change the setting information or cancel the contract.

  In view of this, mobile communication carriers have established a mechanism that prevents communication even if a stolen or lost mobile phone attempts to make a call. For example, in CDMA, the base station monitors whether the ESN / IMSI of the base station is the same as the ESN / IMSI of the device, so that even if a stolen or lost mobile phone tries to make a call, the base station sends the call. Canceled.

  However, when a digital broadcast receiver equipped with a conditional access system is stolen or lost, information such as the master key, tier contract information, or prepaid PPV contract information remains in the stolen / lost mobile phone. There is a problem that the limited reception function works, and the scrambled broadcast can be viewed.

  In the case of postpaid PPV, a stolen or lost mobile phone can illegally view PPV (Pay Per View) programs and the communication function does not work, so the viewing information is sent to the viewing information collection center of the viewing contractor company. There is a problem that cannot be updated.

As one means for solving the problem, there is Patent Document 2 below. In Patent Document 2 below, an encryption key for descrambling is recorded on a mobile portable recording medium, and when using the encryption key, that is, when trying to view limited reception, it communicates with a broadcaster. In this method, after receiving an encryption key usable signal, the encryption key is used to release the scramble.
JP 2000-9920 A JP 2004-72454 A

  However, in Patent Document 2 described above, when a contractor attempts to view, even if a broadcast signal can be received, the contractor cannot view unless wireless communication for acquiring the encryption key is performed. In particular, mobile phones often exist at positions where communication is impossible (so-called “out of service area”), and in such a case, there is a problem that the contracted program cannot be viewed.

  Further, in Patent Document 2 described above, there is a problem that communication is always generated with a broadcaster when viewing, and a communication fee is generated each time.

  In addition, some digital broadcast receivers do not have a wireless communication function, and such a receiver cannot use the method of Patent Document 2 described above, and when such a receiver is stolen or lost. The above-mentioned problem that the prepaid service (program), the postpaid service (program), etc. can be viewed and the subscriber is charged unintentionally cannot be solved.

  In addition, as a charging method for a service (program) viewed by a digital broadcast receiver without a wireless communication function, charging is performed via the communication means by attaching the communication means to the digital broadcast receiver when necessary. , Allowing viewing of the billing card inserted into the digital broadcast receiver, or taking out the storage medium storing the viewing information from the digital broadcast receiver and separately performing charge processing from the communication device via the communication means And how to do it.

  In view of the above-described viewpoints, an object of the present invention is to provide a digital broadcast receiving device, a digital broadcast system, and a broadcast device that can control whether or not content can be viewed without depending on the digital broadcast receiving device.

  A first aspect for overcoming the above problems is a management device that manages unique identification data corresponding to each receiving device capable of viewing a broadcast of a limited reception method or each viewing subscriber of a broadcast of a limited reception method. , A digital broadcast system comprising a broadcast device that performs broadcast of a conditional access system and a digital broadcast receiver that receives the conditional access broadcast, wherein the broadcast device is a receiver capable of viewing the broadcast of the conditional access method. When the identification data of a device or contractor is acquired from the management device and broadcasted, and the digital broadcast receiving device receives the identification data of its own device or a contractor using the device from the broadcast wave The digital broadcast system is characterized in that the broadcast of the limited reception system can be viewed.

  A second aspect for overcoming the above-described problems is that broadcast receiving means for receiving a digital broadcast, storage means for storing identification data of a self apparatus or a contractor using the apparatus, and the broadcast receiving means Control means for enabling the broadcast of the limited reception system received by the broadcast receiving means to be viewed on condition that the identification data included in the broadcast wave received by the storage means matches the identification data stored in the storage means; A digital broadcast receiving apparatus provided.

  A third aspect for overcoming the above-described problem is that a generation unit that acquires identification data of a receiving device or a contractor that can view a broadcast of a limited reception system and generates a transport packet including the identification data, And a transmission unit that transmits the transport packet generated by the generation unit.

  A fourth aspect for overcoming the above problems is to manage unique identification data corresponding to each receiving device capable of viewing a broadcast of a limited reception method or each viewing contractor of a broadcast of a limited reception method, and A receiving device capable of viewing the broadcast of the limited reception method or a management unit for transmitting identification data of a viewing contractor of the broadcast of the limited reception method to a user.

  A fifth aspect for overcoming the above problems is to manage unique identification data corresponding to each receiving device capable of viewing a broadcast of a limited reception system or each viewing contractor of a broadcast of a limited reception system and to perform limited reception. Management device for managing a receiving device or a contractor corresponding to the identification data, a broadcasting device for performing broadcast of a limited reception method, and a digital broadcast receiving device for receiving the limited reception broadcast The broadcast device acquires the identification data of the receiving device or the contractor who stops reception or viewing of the limited reception method from the management device and broadcasts the digital broadcasting system, and When receiving the identification data of the own device or the contractor using the device from the broadcast wave, the broadcast receiving device stops receiving or watching the broadcast of the limited reception method. A digital broadcasting system characterized Rukoto.

  A sixth aspect for overcoming the above problems is a broadcast receiving means for receiving a digital broadcast, a storage means for storing identification data of its own device or a contractor using the device, and the broadcast receiving means. Control means for stopping reception or viewing of the broadcast of the limited reception method received by the broadcast receiving means, on the condition that the identification data included in the broadcast wave received by the storage means matches the identification data stored in the storage means; And a digital broadcast receiving apparatus.

  A seventh aspect for overcoming the above-described problem is a generation means for acquiring identification data of a receiving apparatus or a contractor that stops reception or viewing of a limited reception method and generates a transport packet including the identification data. And a transmission unit that transmits the transport packet generated by the generation unit.

  An eighth aspect for overcoming the above problems is to manage unique identification data corresponding to each receiving device capable of viewing a conditional access broadcast or each subscriber of a conditional access broadcast and to perform limited reception. The receiving device or the contractor who stops the reception of the system or the viewing is managed in correspondence with the identification data, and the receiving device or the contractor who stops the reception or the viewing of the limited reception system with respect to the broadcaster is identified. And a management unit that transmits data.

  According to the present invention, whether or not content can be viewed can be controlled without depending on the digital broadcast receiving apparatus.

<< First Embodiment >>
Hereinafter, an embodiment of a digital broadcasting system of the present invention, particularly a broadcasting system that performs broadcast of a limited reception system will be described.

  FIG. 1 is a diagram illustrating a system configuration of a digital broadcasting system 1 according to the embodiment.

  The broadcasting apparatus 20 is an apparatus of a broadcasting company that performs digital broadcasting, and generates TS packets (transport stream packets) by multiplexing contents (video signals, audio signals, data signals), section information, and the like. Unit 201 and a transmission unit 200 that transmits the generated TS packet by broadcast waves. In addition, the transmission unit 200 also performs conditional access broadcasting.

  The TS packet includes scrambled content (for example, video signals and audio signals such as movies and music), section information such as ECM (Entitlement Control Message), EMM (Entitlement Management Message), and EPG (Electrical Program Guide). ECM and EMM are messages for realizing a limited reception function of digital broadcasting.

  In the EMM section, a plurality of EMM bodies for each digital broadcast receiving apparatus (hereinafter referred to as a limited receiving apparatus) targeted for limited reception are multiplexed. In the EMM main body, a card ID, a work key for canceling ECM, function information on PPV (Pay Per View), and the like are described.

  On the other hand, the ECM is a message common to all conditional access devices, and describes a scramble key for releasing the scramble of content, information necessary for PPV viewing determination, and the like. Note that the EMM and ECM are encrypted using an encryption method different from that for content scrambling.

    When writing the EMM into the TS packet, the TS packet generation unit 201 sends the identification data (data of the limited reception target device) of the digital broadcast reception device that is the transmission target of the EMM from the management device 30 of the mobile communication carrier to the public. The request is acquired (acquired) via the network 900, and the acquired (acquired) identification data is embedded (inserted) in the EMM variable part of the EMM.

  Then, the EMM TS packet generated by the TS packet generation unit 201 is broadcast from the transmission unit 200 via the broadcast antenna 202.

  Here, the management device 30 is a device of a business operator that manages the digital broadcast receiving device, and is unique for each receiving device that can view the broadcast of the limited reception method or each viewing subscriber of the broadcast of the limited reception method. Management server 300 for managing the identification data, and an encryption unit 301 for encrypting the identification data. In the case of a telecommunications carrier, the “subscription subscriber for conditional access broadcasting” may be managed in association with the line contractor (subscriber), so the identification data is used to identify the line contractor (subscriber). Identification data may be used.

  Further, the encryption unit 301 of the management device 30 can encrypt the identification data using, for example, an encryption method unique to the mobile communication carrier. As a result, the identification data can be kept secret from the broadcaster who uses the broadcast device 20.

  The management device 30 transmits the encrypted identification data to the broadcasting device 20 via the public network 900, and the broadcasting device 20 supplies the received identification data to the TS packet generation unit 201. The management apparatus 30 may be configured to transmit the identification data as it is to the broadcast apparatus 20 without encryption, and the broadcast apparatus 20 supplies the received identification data to the TS packet generation unit 201.

  Next, the digital broadcast receiving apparatus 10 will be described.

  The digital broadcast receiving apparatus 10 includes a broadcast wave receiving antenna 100, a tuner 101, a control unit 102, a descrambler 103 for releasing scramble, a decoder 104, an antenna 105 for wireless communication, and a transmission / reception unit 106. An IC card 107, a display 108, a speaker 109, a memory 110 for storing identification data (ID) unique to the device itself or identification data for identifying a line contractor (subscriber), and a decoding unit 111.

  The control unit 102 is mainly composed of a microcomputer, and controls the digital broadcast receiving apparatus 10 such as data transfer control and timing control.

  In the digital broadcast receiving apparatus 10, a broadcast wave is received by the antenna 100, and a channel is selected by a tuner 101 for adjusting the frequency to a designated program.

  The control unit 102 compares the card ID included in the EMM with the card ID stored in the IC card 107 in order to extract the EMM addressed to the own device from the TS packet extracted by the tuner 101, and matches. Only in some cases, the encrypted part of the extracted EMM is decrypted with the master key stored in the IC card 107. As described above, the IC card 107 stores a card ID and a master key. Card ID is ID for authenticating that it is a conditional access apparatus.

  Then, the work key is extracted from the decrypted EMM, and the ECM in the TS packet is decrypted with the work key. Further, a scramble key is extracted from the decrypted ECM.

  The control unit 102 compares the identification data included in the decrypted EMM (EMM main body) with its own identification data stored in the memory 110. If the identification data transmitted at this time is encrypted, the decryption unit 111 performs decryption processing. Then, the scramble key is supplied to the descrambler 103 via the control unit 102 on condition that the two match.

  The descrambler 103 descrambles the TS packet based on the supplied scramble key.

  The decoder 104 separates the content included in the TS packet into a video signal and an audio signal and decodes them. The decoded video signal and audio signal are reproduced by the display 108 and the speaker 109, respectively.

  The IC card 107 is an example of hardware means for performing authentication, but a similar function can be realized by software.

  Next, the operation of the digital broadcast receiving apparatus 10 in the digital broadcast system 1 will be described with reference to the flowchart of FIG.

  In FIG. 2, first, a broadcast wave is received from the broadcast device 20, a specific channel is selected by the tuner 101, and a TS packet of that channel is delivered to the control unit 102 (step ST1). When the card ID of the EMM main body in the EMM section of the TS packet is the same as the card ID held in the IC card 107, the control unit 102 determines that the card is for the device itself (step ST2). If the card IDs do not match, an error screen such as “Cannot watch” is displayed (step ST3).

  If the card IDs match, the encrypted part of the received EMM main body is decrypted and analyzed with the master key possessed by the IC card 107 (step ST4). If decryption is not possible (step ST5), an error screen is displayed (step ST3).

  Next, when the identification data included in the EMM main body is encrypted, the decryption unit 111 performs decryption processing (step ST6). However, if the identification data is not encrypted, this process (step ST6) is skipped. Then, the identification data included in the EMM main body is compared with its own identification data stored in the memory 110 (step ST7).

  As a result, if the identification data does not match the identification data of itself, an error screen such as “Cannot be viewed” is displayed (step ST12). In such a case, it is considered that the digital broadcast receiving apparatus 10 is not subject to the viewing contract, and therefore the control unit 102 may perform a process of disabling the limited reception function or disabling broadcast reception itself. Good (step ST13). The process of disabling the conditional access function or the process of disabling broadcast reception itself includes, for example, not receiving EMM and ECM, erasing information on the IC card 107, and disabling the IC card 107. It is processing.

  In step ST7, when the identification data and the self identification data match, the IC card 107 uses the work key included in the EMM main body to decrypt and analyze the ECM to extract the scramble key (step ST7). In ST8 and ST9), the scramble key is supplied to the descrambler 103.

  The descrambler 103 descrambles the TS packet using the supplied scramble key (step ST10). The descrambled TS packet is separated into a video signal and an audio signal by the decoder 104, and each is decoded and displayed on the display 108 or output to the speaker 109. That is, the content is output (step ST11).

  The ID described above and the identification data for specifying the line subscriber (subscriber) are at least an electronic serial number (ESN), a mobile subscriber identification number (IMSI), and an international mobile phone identification number. (IMEI) or mobile phone identification number (MIN).

  As described above, in the digital broadcast system 1 according to the present embodiment, it is included in the EMM transmitted from the broadcast device 20 regardless of the validity / invalidity of the wireless communication function of the digital broadcast reception device 10 and the internal viewing setting. The limited reception function of the digital broadcast receiving apparatus 10 can be controlled to be valid / invalid (viewable / not viewable) according to the identification data. For example, even if the digital broadcast receiving apparatus 10 is out of the service area, it is not configured to receive a scramble key for canceling scrambled content by wireless communication (transmit a request). The person can watch the limited reception broadcast.

  In addition, since the digital broadcasting system 1 according to the present embodiment employs an authentication method of matching the identification data with the self identification data, it is possible to improve security for limited reception. In other words, in the case of theft or loss, by notifying the telecommunications carrier that manages the digital broadcast receiving device to the effect that the telecommunications carrier changes the data of the management server 300 or does not transmit to the broadcaster, The target digital broadcast receiving apparatus cannot view limited reception.

<< Second Embodiment >>
Hereinafter, a second embodiment of the digital broadcasting system of the present invention will be described.

  FIG. 3 is a diagram showing a system configuration of the digital broadcast system 2 according to the present embodiment.

  The digital broadcasting system 2 includes a digital broadcast receiving device 11, a broadcasting device 20, and a management device 31. The digital broadcast receiving apparatus 10 is different from the digital broadcast receiving apparatus 10 according to the first embodiment in that the memory 110 and the decoding unit 111 are not provided. The management device 31 is different from the management device 30 according to the first embodiment in that the management device 31 is configured by a management server 302.

  Also, the broadcasting device 20 encrypts the EMM using one of the above ESN, IMSI, IMEI, and MIN as an encryption key and transmits the encrypted EMM. This eliminates the need for the broadcast device 20 to determine whether each digital broadcast receiving device can receive a digital broadcast, thereby speeding up the processing.

  The operation of the digital broadcast system 2 is different from that of the digital broadcast system 1 of the first embodiment as follows.

(1) The broadcasting device 20 encrypts the EMM using the identification data as an encryption key. A TS packet including the encrypted EMM is transmitted to the digital broadcast receiver 11.

(2) The digital broadcast receiving apparatus 11 holds its own identification data in the IC card 107, and decrypts the EMM main body of the TS packet using the held identification data as an encryption key.

  As an example of the IC card 107 here, a SIM (Subscriber Identity Module) or a UIM (User Identity Module) is preferable.

  Next, the operation of the digital broadcast receiving apparatus 11 in the digital broadcast system 2 will be described with reference to the flowchart of FIG.

  In FIG. 4, first, a broadcast wave is received from the broadcast apparatus 20, a specific channel is selected by the tuner 101, and a TS packet of that channel is delivered to the control unit 102 (step ST20). When the card ID of the EMM main body of the EMM section of the TS packet is the same as the card ID held in the IC card 107, the control unit 102 determines that it is for the digital broadcast receiving device (step ST21). If the card IDs do not match, an error screen such as “Cannot view” is displayed (step ST22).

  If the card IDs match, the IC card 107 attempts to decrypt / analyze the encrypted part of the EMM body using its own identification data held by itself as an encryption key (step ST23).

  As a result, if the EMM cannot be decrypted (step ST24), an error screen such as “Cannot be viewed” is displayed (step ST29). In such a case, since it is considered that the mobile receiver 10 is not subject to the viewing contract, the control unit 102 may perform a process of disabling the limited reception function or disabling broadcast reception itself. (Step ST30). The process of disabling the conditional access function or the process of disabling broadcast reception itself includes, for example, not receiving EMM and ECM, erasing information on the IC card 107, and disabling the IC card 107. It is processing.

  When the encrypted part of the EMM can be decrypted (step ST24), the IC card 107 uses the work key included in the EMM body to decrypt and analyze the ECM and extract the scramble key ( In steps ST25 and ST26), the scramble key is supplied to the descrambler 103.

  The descrambler 103 descrambles the TS packet using the supplied scramble key (step ST27). The descrambled TS packet is separated into a video signal and an audio signal by the decoder 104, and each is decoded and displayed on the display 108 or output to the speaker 109. That is, the content is output (step ST28).

  As in the first embodiment, the identification data includes at least one of an electronic serial number (ESN), a mobile subscriber identification number (IMSI), an international cellular phone identification number (IMEI), or a cellular phone identification number (MIN). It can be.

  According to the digital broadcast system 2 according to the present embodiment, the same effects as those of the digital broadcast system 1 according to the first embodiment can be obtained, and the entire configuration of the digital broadcast system 2 can be simplified.

<< Third Embodiment >>
Hereinafter, a third embodiment of the digital broadcasting system of the present invention will be described.

  The system configuration of the digital broadcasting system according to this embodiment is the same as that of the digital broadcasting system 1 shown in FIG.

  The present embodiment is different from the first embodiment in that the broadcast apparatus 20 includes identification data for stopping the conditional access function in the EMM. Here, it is assumed that the management apparatus 30 manages a receiving apparatus or a contractor who wants to stop the limited reception function (reception or stop viewing) in association with the identification data.

  The operation of the digital broadcast receiving apparatus 10 according to the present embodiment will be described below in association with the flowchart of FIG.

  In FIG. 5, first, a broadcast wave is received from the broadcast device 20, a specific channel is selected by the tuner 101, and a TS packet of that channel is delivered to the control unit 102 (step ST40). When the card ID of the EMM main body in the EMM section of the TS packet is the same as the card ID held in the IC card 107, the control unit 102 determines that the card is for the digital broadcast receiving device (step ST41). If the card IDs do not match, an error screen such as “Cannot view” is displayed (step ST42).

  If the card IDs match, the encrypted part of the received EMM main body is decrypted and analyzed with the master key possessed by the IC card 107 (step ST43). If decryption is not possible (step ST44), an error screen is displayed (step ST42).

  Next, when the identification data included in the EMM main body is encrypted, the decryption unit 111 performs decryption processing (step ST45). However, if the identification data is not encrypted, this process (step ST45) is skipped. And it is confirmed whether the EMM main body contains identification data (step ST46).

  As a result, when the EMM main body includes identification data and the identification data matches the identification data stored in the memory 110 (step ST47), for example, an error such as “Cannot be viewed”. The screen is displayed (step ST48). In such a case, since it is considered that the mobile receiver 10 is not subject to the viewing contract, the control unit 102 may perform a process of disabling the limited reception function or disabling broadcast reception itself. (Step ST49). The process of disabling the conditional access function or the process of disabling broadcast reception itself includes, for example, not receiving EMM and ECM, erasing information on the IC card 107, and disabling the IC card 107. It is processing.

  If the identification data is not included in the EMM in step ST46, or if the identification data matches the identification data of its own in step ST47, the IC card 107 uses the work key included in the EMM main body, The ECM is decrypted and analyzed to extract a scramble key (steps ST50 and ST51), and the scramble key is supplied to the descrambler 103.

  The descrambler 103 descrambles the TS packet using the supplied scramble key (step ST52). The descrambled TS packet is separated into a video signal and an audio signal by the decoder 104, and each is decoded and displayed on the display 108 or output to the speaker 109. That is, the content is output (step ST53).

  According to the digital broadcast system according to the present embodiment, the digital broadcast receiving device 10 matches one's own identification data in one or a plurality of identification data included in the EMM of the received TS packet. In order to determine whether or not the limited reception function is valid / invalid, whether or not the wireless communication function of the digital broadcast receiving device 10 is valid / invalid and the internal viewing setting is determined, as in the first embodiment. The limited reception function of the digital broadcast receiver 10 can be controlled to be valid / invalid (viewable / not viewable) according to the identification data included in the EMM transmitted from the broadcast device 20.

  In carrying out the present invention, the above-described embodiments can be appropriately combined.

  Further, the above-described embodiment is merely an example of the present invention, and the present invention is not limited to the above-described embodiment. For example, digital broadcasting includes satellite digital broadcasting such as BS digital broadcasting and CS digital broadcasting in addition to terrestrial digital.

  For example, an embodiment is described in which the retention of the card ID and the self identification data is retained in the built-in memory or the IC card of the digital broadcast receiving device according to the situation, but the above-mentioned location is limited to the embodiment. Further, it may be configured to be held in either the built-in memory or the IC card.

  In addition, the above-mentioned “card ID” may not be used depending on the system design, so the identifier is not limited to this as long as it is an identifier for extracting the EMM addressed to the own device from the TS packet. Also, it is not limited to cards.

  The “IC card” described above is not limited to an IC card as long as it is a storage unit that stores information.

  Further, the IC card may be configured such that digital broadcasts cannot be viewed when not mounted on the digital broadcast receiver.

  Further, the digital broadcast receiving apparatus of the present invention can be applied to an apparatus having a function capable of receiving a digital broadcast.

  In addition, in the case of a device other than a mobile phone or a device incorporating a communication module managed by a mobile communication carrier, the management device of the business operator that manages the limited reception contract for digital broadcasting must respond from the broadcaster. Thus, it is possible to control the validity / invalidity of the limited reception function of the digital broadcast receiving apparatus.

1 is a diagram illustrating a system configuration of a digital broadcast system according to an embodiment. It is a flowchart which shows operation | movement of the digital broadcast receiver which concerns on embodiment. 1 is a diagram illustrating a system configuration of a digital broadcast system according to an embodiment. It is a flowchart which shows operation | movement of the digital broadcast receiver which concerns on embodiment. It is a flowchart which shows operation | movement of the digital broadcast receiver which concerns on embodiment.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1, 2 ... Digital broadcast system 10, 11 ... Digital broadcast receiver, 20 ... Broadcast apparatus, 30 ... Management apparatus, 90 ... Base station, 900 ... Public network, 901 ... Mobile communication network, 200 ... Transmitter, 201 ... TS packet generation unit, 301 ... encryption unit, 300, 302 ... management server, 100, 105 ... antenna, 101 ... tuner, 102 ... communication unit, 103 ... descrambler, 104 ... decoder, 106 ... transmission / reception unit, 107 ... IC Card 108, display, 109, speaker, 110, memory, 111, decryption unit.

Claims (18)

A management device that manages unique identification data corresponding to each receiving device capable of viewing a broadcast of the limited reception method or each viewing subscriber of the broadcast of the limited reception method, a broadcasting device that performs the broadcast of the limited reception method, and A digital broadcast system comprising a digital broadcast receiver for receiving a limited reception broadcast,
The broadcasting device acquires the identification data of the receiving device or contractor that can view the broadcast of the conditional access system from the management device, and broadcasts it,
The digital broadcast receiving device makes it possible to view the broadcast of the limited reception method when receiving identification data of the own device or a contractor using the device from the broadcast wave. system. Broadcast receiving means for receiving digital broadcasts;
Storage means for storing identification data of the own device or a contractor using the device;
Control for enabling viewing of broadcasts of the limited reception method received by the broadcast receiving means on condition that the identification data included in the broadcast wave received by the broadcast receiving means matches the identification data stored by the storage means Means,
A digital broadcast receiving apparatus.   3. The digital broadcast receiving apparatus according to claim 2, wherein the storage unit is detachable from the digital broadcast receiving apparatus.   The identification data is at least one of an electronic serial number (ESN), a mobile subscriber identification number (IMSI), an international cellular phone identification number (IMEI), or a cellular phone identification number (MIN). Item 3. The digital broadcast receiver according to Item 2.   3. The digital broadcast receiving apparatus according to claim 2, wherein the identification data is included in an encrypted part of the EMM. Generation means for acquiring identification data of a receiving apparatus or contractor capable of viewing a broadcast of a limited reception method and generating a transport packet including the identification data;
Transmitting means for transmitting the transport packet generated by the generating means;
Broadcasting device with   7. The broadcasting apparatus according to claim 6, wherein the generation unit generates the identification data by including the identification data in an encrypted part of the EMM.   Manages unique identification data corresponding to each receiver that can watch a conditional access broadcast or each subscriber to a conditional access broadcast, and allows the broadcaster to view the conditional access broadcast Management device comprising: a receiving device or a management means for transmitting identification data of a broadcast viewing contractor of a limited reception system. The management apparatus according to claim 8, further comprising: a receiving device capable of viewing the broadcast of the limited reception method or an encryption unit for encrypting identification data of a viewing contractor of the broadcast of the limited reception method. A receiving device or a contract that manages unique identification data corresponding to each receiving device capable of viewing a broadcast of the limited reception method or each viewing contractor of the broadcast of the limited reception method, and stops reception or viewing of the limited reception method. A digital broadcast system comprising: a management device that manages a person corresponding to the identification data; a broadcast device that broadcasts a limited reception method; and a digital broadcast reception device that receives the limited reception broadcast,
The broadcasting device acquires the identification data of the receiving device or the contractor who stops the reception or viewing of the limited reception method from the management device and broadcasts it,
The digital broadcast receiving device, when receiving identification data of its own device or a contractor using the device from the broadcast wave, stops receiving or watching the broadcast of the conditional access method. Digital broadcasting system. Broadcast receiving means for receiving digital broadcasts;
Storage means for storing identification data of the own device or a contractor using the device;
Stop receiving or watching broadcasts of the limited reception method received by the broadcast receiving means on condition that the identification data included in the broadcast wave received by the broadcast receiving means matches the identification data stored by the storage means Control means to
A digital broadcast receiving apparatus.   12. The digital broadcast receiving apparatus according to claim 11, wherein the storage means is detachable from the digital broadcast receiving apparatus.   The identification data is at least one of an electronic serial number (ESN), a mobile subscriber identification number (IMSI), an international cellular phone identification number (IMEI), or a cellular phone identification number (MIN). Item 12. The digital broadcast receiver according to Item 11.   12. The digital broadcast receiving apparatus according to claim 11, wherein the identification data is included in an encrypted part of the EMM. Generation means for acquiring identification data of a receiving apparatus or a contractor that stops reception or viewing of a limited reception method and generates a transport packet including the identification data;
Transmitting means for transmitting the transport packet generated by the generating means;
Broadcasting device with   16. The broadcasting apparatus according to claim 15, wherein the generation unit generates the identification data by including the identification data in an encrypted part of the EMM.   A receiving device or a contract that manages unique identification data corresponding to each receiving device capable of viewing a broadcast of the limited reception method or each viewing contractor of the broadcast of the limited reception method, and stops reception or viewing of the limited reception method. A management apparatus comprising: a receiving apparatus that manages a subscriber in correspondence with the identification data, and that transmits the identification data of the contractor or a receiving apparatus that stops reception or viewing of the limited reception method to a broadcaster.   The management apparatus according to claim 17, further comprising: a receiving apparatus that stops reception or viewing of the limited reception method or an encryption unit that encrypts identification data of a contractor.

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