CN1551558A - Right protection method, device and programmme for broadcasting context - Google Patents
Right protection method, device and programmme for broadcasting context Download PDFInfo
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- CN1551558A CN1551558A CNA2004100456769A CN200410045676A CN1551558A CN 1551558 A CN1551558 A CN 1551558A CN A2004100456769 A CNA2004100456769 A CN A2004100456769A CN 200410045676 A CN200410045676 A CN 200410045676A CN 1551558 A CN1551558 A CN 1551558A
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Abstract
Provided is an inexpensive right protection function by a simple structure for a broadcast content. A broadcast content right protecting method applied to a broadcast system broadcasting a ciphered broadcast content from a broadcasting device 300 to a plurality of receivers is provided with a setting step for setting a work key Kw1 and the like (decoding information) for decoding the ciphered broadcast content to a receiver 100-side through a radio base station 310 (network), and an update step for updating the work key and the like (decoding information) for the regular receiver 100 through the network when the right of the broadcast content is invaded on the receiver side due to the appearance of the illegal receiver.
Description
Technical field
For example the present invention relates to be suitable for right protection method, the right protection device of broadcasted content and the rights protection program of broadcasted content, be specifically related to realize with simple and easy and cheap formation right protection method, the right protection device of broadcasted content and the rights protection program of broadcasted content of broadcasted content of the rights protection function of broadcasted content at the broadcasted content that uses aspect the rights protection of the broadcasted content of received terrestrial digital broadcasting etc.
Background technology
From putting down on December 1st, 12, as satellite broadcasting, beginning BS (broadcasting satellite: digital broadcasting Broadcasting Satellite), and use broadcast service to free, the charge of looking the hearer.Look the hearer in order to receive this BS digital broadcasting, need to make receiver to realize the IC-card of CAS (Conditional Access System: limit receiving system) function.This IC-card is called as the B-CAS card.
In the CAS mode of using the B-CAS card, owing to use encryption technology that broadcast singal is encrypted, thereby can limit the hearer that looks of receiving broadcast signal.
The encryption that is applicable to the CAS mode is to picture signal and voice signal and adopt.The broadcast singal that sends from the broadcasting station is by the part formation that adopts the key (encryption key Ks) encrypting the signal encryption part that sends and be used for the signal of encrypting is decrypted by receiver to wait.Like this, if adopt the broadcast singal of encrypting and comprising key, but then in receiver, use the key of deciphering usefulness to be recovered to the processing of the initial broadcast singal of audiovisual from the broadcasting station transmission.
About above-mentioned encryption key Ks, generally unfixing in order to prevent to distort receiver, but for example once change every the several seconds.And, encrypt in order to prevent to remove, use shared working key Kw that encryption key Ks and programme information are encrypted together.Do the signal of encrypting like this and be called as ECM (Entitlement Control Message: Entitlement Control Message).
Restore by receiver for content, be necessary working key Kw is carried out multiplexed the transmission with the broadcast singal that sends from the broadcasting station above-mentioned ECM.About this working key Kw, encrypt together and send looking contract information between hearer and broadcasting station.Do the signal of encrypting like this and be called as EMM (Entitlement Management Message: Entitlement Management Message).This EMM uses master key Km to encrypt.Master key Km is each recipient's a unique key, and is stored in the B-CAS card.
Like this, the audiovisual of the desired program that can provide with regard to each broadcasting station uses 1 B-CAS card freely to settle a bargain.And, by using this B-CAS card, but audiovisual charging broadcast program.
[non-patent literature 1]
NIKKEI NEW MEDIA
Number of the edition " デ ジ Le is broadcasted ガ イ De Block Star Network 2001 " (digital broadcasting guide 2001) day Longitude BP society, on October 30th, 2000,44-57 Page
As described above, for the BS digital broadcasting, using the CAS mode of B-CAS card is the system that is suitable for charging broadcast.Predetermined from putting down into the received terrestrial digital broadcasting that begins surface wave the year ends 15, however adopting aspect the B-CAS card, exist some to worry.
That is, the BS digital broadcasting is different with general surface wave, comprises charging broadcast.Therefore, current popularity rate rises slowly, and popularizing the platform number is that receiver rests on millions of quantity.Therefore, if millions of people's the hearer that looks accepts to receive service, it is easy then managing by administrative center.
To this, in the received terrestrial digital broadcasting of expectation from now on, judge even popularize the platform number from the TV of current surface wave, also have tens of millions of people's audiovisual.This according to being because the free broadcast who can both free audiovisual is attractive.Like this, if prediction has tens of millions of people's audiovisual, but popularizing of the receiver of expected number ten million platform then.
Certainly; although if notice received terrestrial digital broadcasting is free broadcast; yet because the transmission form of digital broadcasting does not have this point of data degradation fully at receiver side; then must be to the rights protection function of receiver setting about copyright of content etc.; that is, prevent the function of the bootlegging, sale etc. of broadcasted content.
Therefore, in received terrestrial digital broadcasting, if comprise above-mentioned copyright administration to looking hearer's management, then can imagining its scale and millions of people's the hearer that looks, to accept the situation of the service that receives different, will cause managerial burden.
Therefore, in order to realize coming received terrestrial digital broadcasting, considered the method that direct handle utilizes the system of the B-CAS card of BS digital broadcasting to transplant.Yet, under the situation of received terrestrial digital broadcasting, consider that its universal platform number increases and the situation that becomes for Whom free broadcast that can both free audiovisual than BS digital broadcasting leap, will be in receiver, increasing and the administrative burden generation of administrative center is worried by the cost burden that does not need function to cause on the hardware.
Summary of the invention
The present invention makes in view of above-mentioned situation, and a kind of right protection method, the right protection device of broadcasted content and rights protection program of broadcasted content that can realize with simple and easy and cheap formation the broadcasted content of the rights protection function of broadcasted content that provide is provided.
In order to achieve the above object, the invention provides a kind of right protection method of broadcasted content, the right protection method of this broadcasted content is applicable to the broadcast system that the broadcasted content of encrypting is broadcasted to a plurality of receivers from the broadcasting station, it is characterized in that, comprise: set step, the decoded information that is used for the broadcasted content of above-mentioned encryption is decoded by network settings at receiver side; And step of updating, because of the appearance of illegal receiver when the state of affairs of infringement broadcasted content right takes place in receiver side, to regular receiver, above-mentioned decoded information is upgraded by above-mentioned network.
And, the present invention also provides a kind of right protection device of broadcasted content, the right protection device of this broadcasted content is applicable to the broadcast system that the broadcasted content of encrypting is broadcasted to a plurality of receivers from the broadcasting station, it is characterized in that, have: setup unit, according to indication, the decoded information that is used for the broadcasted content of above-mentioned encryption is decoded at receiver side is set in receiver side via network from external device (ED); And updating block, because of the appearance of illegal receiver when the state of affairs of infringement broadcasted content right takes place in receiver side, according to indication, upgrade above-mentioned decoded information from the said external device.
And, the present invention also provides a kind of rights protection program of broadcasted content, the rights protection procedural application of this broadcasted content is in the broadcast system that the broadcasted content of encrypting is broadcasted to a plurality of receivers from the broadcasting station, it is characterized in that, be used to make computer as following unit functionating: setup unit, the decoded information that is used for the broadcasted content of above-mentioned encryption is decoded by network settings at receiver side; And updating block, because of the appearance of illegal receiver when the state of affairs of infringement broadcasted content right takes place in receiver side, to regular receiver, above-mentioned decoded information is upgraded by above-mentioned network.
According to the present invention; since the decoded information that is used for the broadcasted content of encrypting is decoded by network settings at receiver side; and when because of the appearance of illegal receiver when the state of affairs of infringement broadcasted content right takes place in receiver side; to regular receiver; decoded information is upgraded by network, thereby can be with the rights protection function of simple and easy and cheap formation realization to broadcasted content.
Description of drawings
Fig. 1 is the block diagram of the formation of expression present embodiment of the present invention.
Fig. 2 is the figure that the reception invalidation under the situation of the receiver circulation that fragile structure is arranged is described.
Fig. 3 is to having loaded batch to be the figure that the reception invalidation under the situation of receiver circulation of rights protection LSI of unit illegal circulation describes having.
Fig. 4 is the figure that describes in the reception invalidation of having been inferred under the situation of used working key Kw1.
Fig. 5 is the figure that the reception invalidation under the situation of having been inferred the working key Kw2 that utilizes is subsequently described.
Fig. 6 is the figure that describes in the reception invalidation of having been inferred under working key Kw1 and Kw2 both sides' the situation.
Fig. 7 is the figure that the reception invalidation under the situation of all master keys of having been inferred particular batch is described.
Embodiment
Below, be elaborated with reference to the present embodiment of accompanying drawing to the rights protection program of the right protection device of the right protection method of broadcasted content of the present invention, broadcasted content and broadcasted content.
Fig. 1 is the block diagram of expression according to the formation of present embodiment of the present invention.This figure has made diagram to the received terrestrial digital broadcasting system that is made of receiver 100, antenna 200, broadcaster 300, key management apparatus 400, wireless base station 310, wireless base station 410 etc.
In the figure, receiver 100 is to be used to receive the reception machine that offers the received terrestrial digital broadcasting of looking the hearer.In addition, in fact, the quantity that exists of receiver 100 only is equivalent to look hearer's quantity.
In receiver 100, tuner 101 carries out OFDM (Orthodoxy Frequency Division Multiplex: demodulation Orthogonal FrequencyDivision Multiplexing) to the input of the transmission signal of the received terrestrial digital broadcasting that is captured by antenna 200.
MPEG-TS packet extraction unit 102 is extracted the MPEG-TS packet out from the output signal of tuner 101.In addition, 102 packets relevant with various keys of MPEG-TS packet extraction unit etc. output to processor 108.
The encryption key Ks that provides from processor 108 is provided MULTI2 lsb decoder 103, the MPEG-TS packet is decoded, and broadcast singal is outputed to MPEG video packets of data decompression portion 104 and MPEG audio data bag decompression portion 106.
MPEG video packets of data decompression portion 104 decompresses the broadcast singal from MULTI2 lsb decoder 103, and the picture signal that is obtained is outputed to monitor 105.Monitor 105 is according to coming display image (broadcasted content) from the picture signal of MPEG video packets of data decompression portion 104.
MPEG audio data bag decompression portion 106 decompresses the broadcast singal from MULTI2 lsb decoder 103, and the voice signal that is obtained is outputed to loud speaker 107.Loud speaker 107 comes output sound according to the voice signal from MPEG audio data bag decompression portion 106.
This authentication codes ID and receiver manufacturing merchant key K set are input in the rights protection LSI110 by LSI manufacturer; afterwards; receiver manufacturing merchant activates rights protection LSI110 by receiver manufacturing merchant key K set and authentication codes ID are input in this rights protection LSI110.
That is, rights protection LSI110 can not use when having the both sides of authentication codes ID and receiver manufacturing merchant key K set.
Therefore, in the present embodiment, even from making the LSI manufacturer there of rights protection LSI110, when rights protection LSI110 illegally flows out with monomeric form, owing to do not have authentication codes ID, thereby also can prevent illegal use.
Rights protection LSI110 is the LSI that is used to realize the rights protection of broadcasted content, is made by LSI manufacturer (differentiating with receiver manufacturing merchant).This rights protection LSI110 receives various packets and information from processor 108, takes out encryption key Ks, and sends it to processor 108.
Rights protection LSI110 takes out encryption key Ks, and this encryption key Ks is sent to processor 108 as the cryptogram decoding key from the information that the processor 108 of receiver 100 receives MPEG-TS packets, ECM, EMM, cancels etc.
In rights protection LSI110, control part 111 each one of control.(read-only memory: Read Only Memory) 112 internal memories contain the information of initialization command, Mission Number, model, manufacturer's numbering etc. at ROM.Contain various keys (the following master key Km1 that uses aspect the rights protection of broadcasted content at key storage part 113 internal memories; master key Km2, working key Kw1, working key Kw2; LST management particular key Klsi, receiver manufacturing merchant key K set etc.).
Master key Km1 is the decoding key that uses when taking out working key Kw1 from packet, is taken out by master key lsb decoder 115.Master key Km2 is the pre-standby key of master key Km1.Working key Kw1 and Kw2, for example, the key that is to use master key Km1 from packet, to take out at working key lsb decoder 116.For example, in the present embodiment, working key Kw1 uses for of that month broadcasting, and working key Kw2 uses for broadcasting next month.
In addition, suppose that the working key Kw3 shown in this figure, working key Kw4 and master key Km3 also are not stored in the key storage part 113.
LST management is unique key that rights protection LSI110 is set with particular key Klsi, is use when master key Km1 and master key Km2 are decoded.Receiver manufacturing merchant key K set is the key of authentication codes ID being set by receiver manufacturing merchant.
Herein, in rights protection LSI110, have secret input path, and be set with receiver manufacturing merchant key K set etc.Ball GridArray) etc. and (ball grid array: be installed on the substrate, perhaps be installed on the substrate under the state by coverings such as resins, can not take off from substrate and carry out the illegal countermeasure of utilizing again by employing by BGA for rights protection LSI110.Selector 114 has the function of the allocation of packets of from processor 108 being given master key lsb decoder 115, working key lsb decoder 116 and encryption key lsb decoder 117.
Master key lsb decoder 115 has according to LST management particular key Klsi, the function of always taking out master key in the packet of selector 114.Working key lsb decoder 116 has according to master key, takes out the function of working key from packet.Encryption key lsb decoder 117 has according to working key, takes out the function of encryption key from packet.
Below, with reference to Fig. 2～Fig. 9, to present embodiment be used to realize that the concrete grammar of rights protection of broadcasted content describes.Below, working key, master key etc. is inferred by the third party of malice, and with the situation of illegal receiver receiving broadcast content as the invalid method that realizes rights protection, describe according to each situation.
Fig. 2 is the figure that the reception invalidation under the situation of the receiver circulation that fragile structure is arranged is described.Herein, Cui Ruo receiver is meant because the fault of construction of manufacturer's responsibility and can obtaining is not implemented the receiver of the content of encryption.Therefore, in this case, can obtain not to be implemented the content of encryption, the right of broadcasted content is encroached on from this receiver.
In the figure, in step SA1, broadcaster 300 is by wireless base station 310, sends to all object receivers (fragile receiver) to be used to indicate the working key of the removing working key bag that clears data.Like this, the object receiver is by antenna 200, receives the working key bag that clears data.
Then, working key clears data to wrap and is sent to rights protection LSI110 from processor 108.At step SA2, control part 111 is removed the working key Kw1, the working key Kw2 that are stored at current time in the key storage part 113 according to the above-mentioned working key bag that clears data.Like this, make the object receiver invalid to the reception of received terrestrial digital broadcasting.
At step SA3, the object receiver is by recovery such as broadcasting industry person and receiver manufacturing merchants.Herein, broadcasting industry person or receiver manufacturing merchant look hearer's premises at this regular receiver of receiver of fragility having been done improvement are set when reclaiming.
At step SA4, broadcaster 300 is by wireless base station 310, and (Kw3 Kw4) sends to all regular receivers the working key packet that upgrades usefulness.Like this, make regular receiver can by antenna 200 receive the working key packet that upgrades usefulness (Kw3, Kw4).
Then, (Kw3 Kw4) is sent to the selector 114 of rights protection LSI110 from processor 108 to upgrade the working key packet of usefulness.At step SA5, working key lsb decoder 116 uses master key Km1, and always (Kw3 takes out working key Kw3 and Kw4 in Kw4), it is stored in the key storage part 113, and upgrades working key from the working key packet of the renewal usefulness of selector 114.Like this, make the regular receiver can audiovisual broadcast content.
Fig. 3 is to having loaded batch to be the figure that the reception invalidation under the situation of receiver circulation of rights protection LSI of unit illegal circulation describes having.In this case, suppose that this receiver (object receiver) do not setting illegal circulation under the state of working key.
In the figure, at step SB1, broadcaster 300 is by wireless base station 310, and (Kw1 Kw2) sends to object receiver all regular receivers in addition to the working key packet that new settings is used.Like this, make regular receiver can by antenna 200 receive the working key packet that new settings use (Kw1, Kw2).
Then, (Kw1 Kw2) is sent to the selector 114 of rights protection LSI110 to the working key packet that new settings is used from processor 108.At step SB2, working key lsb decoder 116 uses master key Km1, always the working key packet of using from the new settings of selector 114 (Kw1, Kw2) middle working key Kw1 and the Kw2 of taking out, it is stored in the key storage part 113, and new settings working key Kw1 and Kw2.Like this, make the regular receiver can audiovisual broadcast content.
On the other hand, the object receiver is not owing to receive the working key packet that sends from broadcaster 300, thereby can not audiovisual broadcast content.
Fig. 4 is the figure that the reception invalidation under the situation that is gone out used working key Kw1 by deduction (leakage) is described.
In the figure, at step SC1, broadcaster 300, is used from used working key Kw1 broadcast singal by wireless base station 310 to regular receiver with switching to working key Kw2.
Like this, at step SC2, each regular receiver is used from working key Kw1 the broadcast singal that receives by antenna 200 with switching to working key Kw2.That is,, packet is sent to selector 114, uses working key lsb decoder 116 from this packet, to take out working key Kw2 by processor 108.Like this, receiver 100 switches to working key Kw2 from used working key Kw1, but the broadcasted content after audiovisual is switched.
At step SC3, broadcaster 300 is by wireless base station 310, and (Kw3) sends to regular receiver the working key packet.Like this, make regular receiver receive working key packet (Kw3) by antenna 200.
Then, working key packet (Kw3) is sent to the selector 114 of rights protection LSI110 from processor 108.At step SC4, working key lsb decoder 116 uses master key Km1, always takes out working key Kw3 in the working key packet (Kw3) of selector 114, it is stored in the key storage part 113, and sets working key Kw3.
Fig. 5 is the figure that describes in the reception invalidation that is gone out the situation of the working key Kw2 that utilizes subsequently by deduction (or leakage).
In the figure, at step SD1, broadcaster 300 is by wireless base station 310, sends to regular receiver to be used to indicate the working key of the removing working key Kw2 bag that clears data.Like this, make regular receiver receive the working keys bag that clears data by antenna 200.
Then, working key clears data to wrap and is sent to rights protection LSI110 from processor 108.At step SD2, control part 111 will be removed at the working key Kw2 in current time is stored in key storage part 113 according to the above-mentioned working key bag that clears data.Like this, make the receiver can not the audiovisual broadcasted content relevant with working key Kw2.
At step SD3, broadcaster 300 sends to regular receiver to working key packet (Kw3) by wireless base station 310.Like this, make regular receiver receive working key packet (Kw3) by antenna 200.
Then, working key packet (Kw3) is sent to the selector 114 of rights protection LSI110 from processor 108.At step SD4, working key lsb decoder 116 uses master key Km1, always takes out working key Kw3 in the working key packet (Kw3) of selector 114, it is stored in the key storage part 113, and sets working key Kw3.
At step SD5, broadcaster 300 is used from used working key Kw1 broadcast singal by wireless base station 310 to regular receiver with switching to working key Kw3.
Like this, at step SD6, make regular receiver the broadcast singal that receives by antenna 200 from working key Kw1 with switching to working key Kw3 usefulness, but the broadcasted content after the audiovisual switching.
Fig. 6 is the figure that the reception invalidation under the situation that is gone out work key K w1 and Kw2 by deduction (leakage) is described.
In the figure, at step SE1, broadcaster 300 is by wireless base station 310, sends to regular receiver to be used to indicate the working key of the removing working key Kw2 bag that clears data.Like this, make regular receiver receive the working keys bag that clears data by antenna 200.
Then, working key clears data to wrap and is sent to rights protection LSI110 from processor 108.At step SE2, control part 111 will be removed at the working key Kw2 in current time is stored in key storage part 113 according to the above-mentioned working key bag that clears data.Like this, make the regular receiver can not the audiovisual broadcasted content relevant with working key Kw2.
At step SE3, broadcaster 300 is by wireless base station 310, and (Kw3) sends to regular receiver the working key packet.Like this, make regular receiver receive working key packet (Kw3) by antenna 200.
Then, working key packet (Kw3) is sent to the selector 114 of rights protection LSI110 from processor 108.At step SE4, working key lsb decoder 116 uses master key Km1, always takes out working key Kw3 in the working key packet (Kw3) of selector 114, it is stored in the key storage part 113, and sets working key Kw3.
At step SE5, broadcaster 300 is used from used working key Kw1 broadcast singal by wireless base station 310 to regular receiver with switching to working key Kw3.
Like this, at step SE6, make regular receiver the broadcast singal that receives by antenna 200 from working key Kw1 with switching to working key Kw3 usefulness, but the broadcasted content after the audiovisual switching.
At step SE7, broadcaster 300 is by wireless base station 310, and (Kw4) sends to regular receiver the working key packet.Like this, make regular receiver receive working key packet (Kw4) by antenna 200.
Then, working key packet (Kw4) is sent to the selector 114 of rights protection LSI110 from processor 108.At step SE8, working key lsb decoder 116 uses master key Km1, always takes out working key Kw4 in the working key packet (Kw4) of selector 114, it is stored in the key storage part 113, and sets working key Kw4.
Fig. 7 is to being inferred that (leakage) goes out the figure that the reception invalidation of situation of all master keys of particular batch describes.
In the figure, at step SF1, key management apparatus 400 sends to object receiver all regular receivers in addition to master key packet (Km3) by wireless base station 410.This master key packet uses the LST management to encrypt with particular key Klsi.Then, make regular receiver receive the master key packet (Km3) that new settings is used by antenna 200.
Then, master key packet (Km3) is sent to the selector 114 of rights protection LSI110 from processor 108.At step SF2, master key lsb decoder 115 uses LST management particular key Klsi, always in the master key packet (Km3) of selector 114, take out master key Km3, it is stored in the key storage part 113, and master key is updated to master key Km3 from master key Km1 and the Km2 that is inferred.
And, when being inferred master key, because the possibility height that working key is also inferred, thereby at step SF3 and step SF4, same with reception invalidation shown in Figure 6, carry out the working key renewal processing that working key is updated to working key Kw3 and Kw4 from working key Kw1 and Kw2.
In addition, when in a plurality of master keys, a part is inferred (leakage) when going out, and by the remote operation of key management apparatus 400, in regular receiver, makes used master key be updated to the master key of not inferred (or leakage).Simultaneously, for working key, also be updated equally with Fig. 6.
And, inferred that at authentication codes ID only (or leakage) is when going out, perhaps the both sides at authentication codes ID and receiver manufacturing merchant key K set are inferred that simultaneously (or leakage) is when going out, handle by the renewal of regular receiver being implemented above-mentioned master key, working key, the audiovisual of the broadcasted content of illegal receiver (object receiver) can not be realized.
As described above such; according to present embodiment; because various key (working keys to decoding from the broadcast singal (broadcasted content of encryption) of broadcaster 300; master key; Deng: decoded information) be set in receiver 100 sides; and when because of the appearance of illegal receiver when the state of affairs of infringement broadcasted content right takes place in receiver 100 sides; to regular receiver 100; upgrade various keys (decoded information), thereby can realize function with simple and easy and cheap formation to the rights protection of broadcasted content.
And; according to present embodiment; as the explanation that reference Fig. 3 is done; because an illegal receiver is considered as batch being the receiver of unit illegal circulation; even, also can realize function with simple and easy and cheap formation to the rights protection of broadcasted content for batch to be the illegal outflow of unit.
And; according to present embodiment; as the explanation that reference Fig. 4～Fig. 7 is done; owing to illegal receiver is considered as obtaining based on the third party from malice the receiver of the various keys (decoded information) of (deduction etc.); even thereby, also can realize function with simple and easy and cheap formation to the rights protection of broadcasted content for illegally the obtaining of various keys (decoded information).
And; according to present embodiment; because various keys (decoded information) are set among the rights protection LSI110 that is installed in the receiver; thereby, can realize function with simple and easy and cheap formation to the rights protection of broadcasted content for the receiver 100 that rights protection LSI110 has been installed.
And; according to present embodiment; because rights protection LSI110 is loaded in the receiver 100; and the authentication codes ID that can be set in according to the assembling stage receiver manufacturing merchant in this receiver 100 uses; thereby can accomplish when only rights protection LSI110 illegally flows out, can not use, can realize more reliable rights protection function.
Abovely with reference to accompanying drawing present embodiment according to the present invention has been made detailed description, yet concrete configuration example is not limited to present embodiment, the design alteration etc. that does not deviate from the scope of principal character of the present invention is also included within the present invention.
For example; in above-mentioned present embodiment; being used to realize that each functional programs relevant with the rights protection of above-mentioned broadcasted content is recorded in computer-readable recording medium, the computer shown in this figure is read in and the program of executive logging on this recording medium, thereby can realize each function.
And, in the present embodiment, the suitable example of received terrestrial digital broadcasting being described, yet being not limited thereto, the broadcasting of all modes can both be suitable for.
And, in the present embodiment, the configuration example of carrying out master key handing-over by radiolink is described, yet can forms the configuration example that the Wireline that utilizes telephone line, internet etc. joins.
And, in the present embodiment, the configuration example that the key management apparatus 400 that makes broadcasting broadcaster 300 of usefulness and key management send usefulness is separated is described, yet can form these broadcasters 300 and key management apparatus 400 are made of one device, use the configuration example of time slot transmission secret cipher key code that the frequency band with broadcasting usefulness separates etc.
As mentioned above; according to the present invention; since the decoded information that the broadcasted content of encrypting is decoded by network settings at receiver side; and when because of the appearance of illegal receiver when the state of affairs of infringement broadcasted content right takes place in receiver side; to regular receiver; decoded information is upgraded by network, thereby the effect that obtains is to realize the function to the rights protection of broadcasted content with simple and easy and cheap formation.
And; according to the present invention, because an illegal receiver is considered as batch being the receiver of unit illegal circulation, thereby for batch being the illegal outflow of unit; the effect that obtains is to realize the function to the rights protection of broadcasted content with simple and easy and cheap formation.
And; according to the present invention, owing to the receiver of the decoded information that illegal receiver is considered as obtain based on the third party from malice, thereby illegally obtaining for decoded information; the effect that obtains is to realize the function to the rights protection of broadcasted content with simple and easy and cheap formation.
And; according to the present invention, because decoded information is set in the integrated circuit that is installed in the receiver, thereby for the receiver that integrated circuit has been installed; the effect that obtains is to realize the function to the rights protection of broadcasted content with simple and easy and cheap formation.
And; according to the present invention, because setup unit and updating block are set in the integrated circuit that is installed in the receiver, thereby for the receiver that integrated circuit has been installed; the effect that obtains is to realize the function to the rights protection of broadcasted content with simple and easy and cheap formation.
And; according to the present invention; because integrated circuit is loaded in the receiver; and can use according to the authentication codes that is set in this receiver in the assembling stage; thereby the effect that obtains is; can accomplish when only integrated circuit illegally flows out, can not use, and can realize more reliable rights protection function.
Claims (13)
1. the right protection method of a broadcasted content, the right protection method of this broadcasted content are applicable to the broadcast system that the broadcasted content of encrypting is broadcasted to a plurality of receivers from the broadcasting station, it is characterized in that, comprising:
Set step, the decoded information that will decode to the broadcasted content of above-mentioned encryption by network settings at receiver side; And
Step of updating, when because of the appearance of illegal receiver when the state of affairs of infringement broadcasted content right takes place in receiver side, to regular receiver, above-mentioned decoded information is upgraded by above-mentioned network.
2. the right protection method of broadcasted content according to claim 1 is characterized in that, above-mentioned illegal receiver is batch being the receiver of unit illegal circulation.
3. the right protection method of broadcasted content according to claim 1 is characterized in that, above-mentioned illegal receiver is based on the receiver of the decoded information that the third party by malice obtains.
4. according to the right protection method of any described broadcasted content in the claim 1～3, it is characterized in that, in above-mentioned setting step, above-mentioned decoded information is set in the integrated circuit that is installed in the above-mentioned receiver.
5. the right protection device of a broadcasted content, the right protection device of this broadcasted content are applicable to the broadcast system that the broadcasted content of encrypting is broadcasted to a plurality of receivers from the broadcasting station, it is characterized in that having:
Setup unit, according to the indication via network from external device (ED), the decoded information that the broadcasted content of above-mentioned encryption is decoded at receiver side is set in receiver side; And
Updating block, when because of the appearance of illegal receiver when the state of affairs of infringement broadcasted content right takes place in receiver side, according to indication, upgrade above-mentioned decoded information from the said external device.
6. the right protection device of broadcasted content according to claim 5 is characterized in that, above-mentioned illegal receiver is batch being the receiver of unit illegal circulation.
7. the right protection device of broadcasted content according to claim 5 is characterized in that, above-mentioned illegal receiver is based on the receiver of the decoded information that the third party by malice obtains.
8. according to the right protection device of any described broadcasted content in the claim 5～7, it is characterized in that above-mentioned setup unit and above-mentioned updating block are arranged in the integrated circuit that is installed in the above-mentioned receiver.
9. the right protection device of broadcasted content according to claim 8 is characterized in that, said integrated circuit is loaded in the above-mentioned receiver, and becomes the use possibility on based on the basis that is set in the authentication codes in this receiver in the assembling stage.
10. the rights protection program of a broadcasted content; the rights protection procedural application of this broadcasted content is in the broadcast system that the broadcasted content of encrypting is broadcasted to a plurality of receivers from the broadcasting station; it is characterized in that, be used to make computer as following unit functionating:
Setup unit, the decoded information that the broadcasted content of above-mentioned encryption is decoded by network settings at receiver side; And
Updating block, when because of the appearance of illegal receiver when the state of affairs of infringement broadcasted content right takes place in receiver side, to regular receiver, above-mentioned decoded information is upgraded by above-mentioned network.
11. the rights protection program of broadcasted content according to claim 10 is characterized in that, above-mentioned illegal receiver is batch being the receiver of unit illegal circulation.
12. the rights protection program of broadcasted content according to claim 10 is characterized in that, above-mentioned illegal receiver is based on the receiver of the decoded information that the third party by malice obtains.
13. the rights protection program according to any described broadcasted content in the claim 10～12 is characterized in that, in above-mentioned setup unit, above-mentioned decoded information is set in the integrated circuit that is installed in the above-mentioned receiver.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP125623/2003 | 2003-04-30 | ||
| JP2003125623A JP2004336158A (en) | 2003-04-30 | 2003-04-30 | Method, device and program for protecting broadcast content right |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1551558A true CN1551558A (en) | 2004-12-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2004100456769A Pending CN1551558A (en) | 2003-04-30 | 2004-04-30 | Right protection method, device and programmme for broadcasting context |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2004336158A (en) |
| CN (1) | CN1551558A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5347118B2 (en) * | 2009-08-18 | 2013-11-20 | 日本放送協会 | Receiver management system |
-
2003
- 2003-04-30 JP JP2003125623A patent/JP2004336158A/en active Pending
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2004
- 2004-04-30 CN CNA2004100456769A patent/CN1551558A/en active Pending
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| Publication number | Publication date |
|---|---|
| JP2004336158A (en) | 2004-11-25 |
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Open date: 20041201 |