CN101729746B - Televiewing control method and device - Google Patents
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Abstract
The invention provides a televiewing control method and device. The method comprises the following steps of: receiving a data packet sent from the front end, wherein information carried in the data packet comprises a flow value and a limit value; making a statistics for a current accumulated flow value of the received data packet; judging whether the current accumulated flow value exceeds to the limit value or not; and not processing the data packet if the judging result is positive. The invention effectively limits the quantity of different program streams simultaneously decrypted by a safety device, thereby limiting the quantity of digital programs descrambled by a terminal, that is to say, limiting the quantity of programs viewed by a terminal user, preventing continuously televiewing a plurality of sets of programs by using one card, effectively protecting the vital interests of service providers and guaranteeing the legitimate rights and interests of the service providers.
Description
Technical field
The present invention is about digital television techniques, especially in regard to the televiewing control method and the device thereof of Digital Television.
Background technology
At present, condition receiving system (CAS:Condition Access System) is used for controlling the system that the user receives broadcast service, realizes the paid service of broadcast system by empowerment management.
Condition receiving system is by broadcast data is carried out scrambling to the control of broadcast service, and the scrambling control information is encrypted realize.
As shown in Figure 1, front end utilizes product key that control word CW is encrypted, transmission in Entitlement Control Message (ECM:Entitlement Control Message).Front end utilizes user key that product key is encrypted, and the product key after encrypting is sent to terminal set top box by the EMM packet.
This set-top box is filtered the EMM packet according to the safety device numbering, the EMM packet that is filled into is sent into this safety device, safety device utilizes pre-buried user key that the product key after encrypting is decrypted, and the product key after the deciphering is stored in this safety device.
This set-top box filters out the ECM bag of this operator according to the identification number of ECM bag, and sends into this safety device, and the product key after this safety device utilization deciphering is decrypted encrypted control word, and the control word after the deciphering is returned to set-top box descrambling program.Behind this digital program descrambling, the user just can watch the product of mandate by the display unit of terminal.
At present, this condition receiving system CAS can provide a safety device, and as smart card, this safety device all has a unique identification number and numbering in the front end data storehouse.Relevant informations such as product key after this safety device recording user key, deciphering.Generally speaking, in order to finish decipher function, this safety device generally comprises CPU (CPU) and deciphering processing unit etc.
The inventor finds that in realizing process of the present invention the defective of prior art is: existing digital TV terminal does not impose any restrictions the flow of each program of being watched, like this, if when having illegal user from malicious to use this safety device repeatedly to receive at least one program, this safety device needs to cause its live load bigger repeatedly to operations such as it are decrypted; In addition, if when receiving a plurality of program, also need this safety device to store the information relevant such as a large amount of program keys, product key with each program, therefore, owing to be subjected to the restriction of the disposal ability and the storage volume of this safety device, cause this safety device can't guarantee operational stability and fail safe, thereby damaged users' interests, also damaged benefits of operators.
Summary of the invention
The purpose of the embodiment of the invention is to provide a kind of televiewing control method and device thereof; add up by flow the program watched; when the integrated flow value surpasses limit value; this program is not handled; thereby make the user can't continue to watch this program, thereby limited the quantity that the terminal use watches program, prevent that links the continuous multiple programs of watching; protect service provider's vital interests effectively, ensured service provider's just rights and interests.
For achieving the above object, the embodiment of the invention provides a kind of televiewing control method, and this method comprises: the packet that receiving front-end sends, and the information that described packet carries comprises flow value and limit value; The current integrated flow value of the described packet that the information butt joint of carrying according to this packet is received is added up; Judge whether described current integrated flow value surpasses this limit value; If judged result is for being then described packet not to be dealt with.
For achieving the above object, the embodiment of the invention provides a kind of acceptance control device, and this device comprises;
Receiving element, described receiving element are used for the packet that receiving front-end sends, and the information that described packet carries comprises limit value;
The current integrated flow value of the described packet that the information butt joint that statistic unit, described statistic unit are used for carrying according to this packet is received is added up;
First judging unit is used to judge whether described current integrated flow value surpasses limit value;
Processing unit is if this first judgment unit judges result is for being that then this processing unit does not deal with described packet.
The beneficial effect of the embodiment of the invention is; by the present invention the flow of the program watched is added up; and when the integrated flow value surpasses limit value; this program is not handled, made the user can't continue to watch this program, thereby limited the quantity of terminal descrambling digital program; promptly limited the quantity that the terminal use watches program; prevent that one links and continuous watches multiple programs, protected service provider's vital interests effectively, ensured service provider's just rights and interests.
Description of drawings
Accompanying drawing described herein is used to provide the further understanding to the embodiment of the invention, constitutes the application's a part, does not constitute the qualification to the embodiment of the invention.In the accompanying drawings:
Fig. 1 is a condition receiving system operation chart in the correlation technique;
Fig. 2 is that the acceptance control device of the embodiment of the invention 1 constitutes schematic diagram;
Fig. 3 is that the acceptance control device of the embodiment of the invention 2 constitutes schematic diagram;
Fig. 4 is the formation schematic diagram of adding up among Fig. 3;
Fig. 5 is the formation schematic diagram of memory cell among Fig. 3;
Fig. 6 is the televiewing control method flow chart of the embodiment of the invention 3;
Fig. 7 is the televiewing control method flow chart of the embodiment of the invention 4.
Embodiment
For the purpose, technical scheme and the advantage that make the embodiment of the invention is clearer,, the embodiment of the invention is described in further detail below in conjunction with accompanying drawing.At this, illustrative examples of the present invention and explanation thereof are used to explain the present invention, but not as a limitation of the invention.
The invention provides a kind of televiewing control method and device thereof, the embodiment of the invention is elaborated below in conjunction with accompanying drawing.
Embodiment 1
The invention provides a kind of acceptance control device, as shown in Figure 2, this device comprises receiving element 201, statistic unit 202, first judging unit 203 and processing unit 204; Wherein, this receiving element 201 is used for the packet that receiving front-end sends, and the information that this packet carries comprises flow value and limit value; This statistic unit 202 is used for the current integrated flow value of the packet that receives is added up; This first judging unit 203 is used for judging whether this current integrated flow value surpasses limit value; If these first judging unit, 203 judged results are for being that then 204 pairs of these packets of this processing unit do not deal with.
Like this, under the situation of current integrated flow value greater than limit value, this device is not decrypted this packet, can't obtain control word CW, thereby can't the descrambling TV programme, makes this user can't watch this program.
In the present embodiment, flow value is meant the flow value in the packet that each CP cycle of front end issues, i.e. flux unit.Current integrated flow value is meant the summation of flow value of this packet of reception.
In the present embodiment, this limit value is meant peak flow values, and this limit value can be provided with according to actual needs by front end operator, and different programs can be provided with similar and different value.But be not limited thereto kind of a mode, can be provided with according to actual needs.
In the present embodiment, above-mentioned acceptance control device can be the safety device of receiving terminal for digital television.
By the foregoing description as can be known; add up by flow the program watched; and when the integrated flow value surpasses limit value; this program is not handled; make the user can't continue to watch this program, thereby limited the quantity that the terminal use watches program, prevent that links the continuous multiple programs of watching; protect service provider's vital interests effectively, ensured service provider's just rights and interests.
Embodiment 2
The invention provides a kind of acceptance control device, as shown in Figure 3, this device comprises receiving element 301, statistic unit 302, first judging unit 303 and processing unit 304, and its effect is similar to Example 1, repeats no more herein.
In the present embodiment, this processing data packets is carried outside flow value and the limit value, goes back portability current version information.Like this, as shown in Figure 4, this statistic unit comprises second judging unit 401 and counting unit 402; Wherein, this second judging unit 401 is used to judge whether this current version information is consistent with the version information that stores, if the judged result of this second judging unit 401 is consistent, this counting unit 402 is used for according to the integrated flow value that stores the current integrated flow value that receives this packet being added up.It is the flow value of integrated flow value+this packet of current integrated flow value=storage.
In addition, as shown in Figure 4, this statistic unit 302 also comprises version updating unit 403 and count update unit 404; Wherein, if the judged result of this second judging unit 401 is inconsistent, the version information that this version updating unit 403 is used for storing is updated to current version information; If the judged result of this second judging unit is inconsistent, this count update unit 404 is used for the reception integrated flow value that stores is upgraded, the integrated flow value zero clearing of the version information correspondence that be about to store restarts the flow value of the packet of the version information correspondence after this renewal is added up.
In the present embodiment, this packet information of carrying also comprises the current time.As shown in Figure 3, this device comprises that also the 3rd judging unit 305, the three judging units 305 are used to judge whether this current time is consistent with the time of storage; If judged result is inconsistent, then notify the current integrated flow value of 302 pairs of these packets of this statistic unit to add up; If the judged result unanimity then notifies the current integrated flow value of 302 pairs of these packets of this statistic unit not add up.In this case, also can be decrypted, obtain CW,, make spectators continue to watch program with the descrambling program to this packet.
Because front end sends packet according to time order and function, generally speaking, can the inconsistent situation of time of occurrence, but, if this condition receiving system takes place unusual, may cause repeating to receive the situation of a certain packet, therefore, by above-mentioned deterministic process, can avoid the situation that data repeat to receive, repeat to add up is taken place.
In the present embodiment, the time of this storage is to receive the current time that packet obtains last time.
In addition, if this packet is encrypted, then as shown in Figure 3, this device also comprises decrypting device 306, and this decrypting device 306 is used for this packet is decrypted, to obtain the information that this packet carries.
As shown in Figure 3, this device also can comprise memory cell 307, and this memory cell 307 is used to store the information that this packet after the deciphering carries.
In the present embodiment, the information that this packet carries also can comprise the statistics sign, this statistics sign can be provided with according to actual needs by front end operator, this statistics sign can be used for distinguishing the zone that the packet that receives is stored, the statistics sign of different packets can be identical, also can be different.For example, statistics sign that can similar program is set to unanimity, and when this device received packet, the information storage of carrying of will the statistics sign consistent packet was in same memory cell.For example, classify according to physical culture, amusement etc.
As shown in Figure 5, this memory cell 307 comprises at least one memory, the information that the packet of the corresponding statistics sign of each memory stores carries.In the present embodiment, this statistics sign can be statistical index (Index), the information that packet after this device can will be deciphered according to this statistical index carries and the current integrated flow value of statistics deposit in the corresponding memory, the quantity of this memory can be provided with arbitrarily according to actual needs, for example, adopts 10 memories, as Index=1, corresponding stored device 1, Index=10 successively, corresponding stored device 10.
By the foregoing description as can be known; add up by flow the program watched; when the integrated flow value surpasses limit value; this program is not handled; make the user can't continue to watch this program, thereby limited the quantity that the terminal use watches program, prevent that links the continuous multiple programs of watching; protect service provider's vital interests effectively, ensured service provider's just rights and interests.
Among the foregoing description 1 and the embodiment 2, this acceptance control device can be the safety device of receiving terminal for digital television, for example can be smart card.
Embodiment 3
The invention provides a kind of televiewing control method, as shown in Figure 6, this method comprises: the packet that receiving front-end sends, and the information that this packet carries comprises flow value and limit value (seeing step 601); Current integrated flow value to this packet of receiving is added up (seeing step 602); Judge whether this current integrated flow value surpasses limit value (seeing step 603); In step 603, if judged result is for being then this packet not to be dealt with (seeing step 604).
In step 603, if judged result is then handled (seeing step 605) to this packet for not.In the present embodiment, can further be decrypted,, utilize this descrambled control words descrambling program, so that the user continues to watch this program to obtain descrambled control words to this packet.
Like this, it can be that this packet is not decrypted that this packet is not dealt with, thereby can't obtain control word CW, can't the descrambling TV programme, and make this user can't watch this program.
In the present embodiment, flow value is meant the flow value in the packet that each CP cycle of front end issues, i.e. flux unit.Current integrated flow value is meant the summation of flow value of this packet of reception.
In the present embodiment, this limit value is meant peak flow values, and this limit value can be provided with according to actual needs by front end operator, and different programs can be provided with similar and different value.But be not limited thereto kind of a mode, can be provided with according to actual needs.
By the foregoing description as can be known; add up by flow the program watched; and when this integrated flow value surpasses limit value; this program is not handled; make the user can't continue to watch this program, thereby limited the quantity that the terminal use watches program, prevent that links the continuous multiple programs of watching; protect service provider's vital interests effectively, ensured service provider's just rights and interests.
Embodiment 4
The invention provides a kind of televiewing control method, as shown in Figure 7, this method comprises:
Table 1
| Grammer | Note |
| Data(){ | |
| OperatorID | Operator's numbering |
| Curtime | Current time |
| Index | Statistical index |
| VersionNumber | The statistics version |
| FluxNumber | Flux unit |
| FluxLimit | The flow restriction value |
| } |
This packet that front end issues can be Entitlement Control Message (ECM) packet, but is not limited thereto.This limit value is provided with flexibly by front end operator, but is not limited thereto.
Can encrypt this packet at front end.
Step 702 is decrypted the packet that receives, and obtains the above-mentioned information of carrying in this packet, and this information is deposited in the memory corresponding with statistical index.
For example, the statistical index that front end issues in the packet is 5, and the statistics version is 1, and flow value is 10, then data is deposited in the 5th memory, as shown in Figure 5.
Step 703 judges whether the current time of this packet is consistent with the time of storage; Wherein, the time of storage is the current time that when receiving packet last time this packet was decrypted the back last time that is obtained.
Step 704 in step 703, if judged result is inconsistent, judges further then whether the current version information of this packet is consistent with the version information that stores; Similar, the version information of this storage is the current version information that when receiving packet last time this packet was decrypted the back last time that is obtained.
Step 706 judges whether this current integrated flow value surpasses limit value;
The notice that also can show in the present embodiment, " condition is prohibited broadcasting " simultaneously at display terminal.
Step 708 is in step 706, if judged result is for denying, then the flow value of this program of explanation reception surpasses limit value, then this packet is handled, and promptly this packet is decrypted, obtain CW, utilize this CW descrambling program, make this user continue to watch this program.
Abnormal conditions in step 703, if judged result for being, illustrate take place and cause packet to repeat transmission, so this packet is not taken statistics in step 709, make statistics more accurate.But can continue this packet is handled, promptly this packet is decrypted, obtain CW, utilize this CW descrambling program, make this user continue to watch this program.
Step 710,711, in step 704, if judged result is for denying, the version information that stores according to the current version information updating then, simultaneously the integrated flow value of the version information correspondence that stores is upgraded,, the integrated flow value zero clearing of the version information correspondence that be about to store restarts the flow value of the packet of the version information correspondence after this renewal is added up.
Below describe for example.
When the user selected the program of viewing channel 1 for the first time, then this device received the packet of this channel 1, and the information that this packet carries comprises operator's numbering, current time, current version information, statistical index, flux unit and limit value; Wherein, for example statistical index is 5, and the statistics version is 1, and flow value is 10, and this limit value is by the front end setting, and generally this limit value is bigger, for example is 10000.
At this moment, this device obtains above-mentioned information to this packet deciphering, above-mentioned information is deposited in the memory 5, owing to select this channel 1 for the first time, receive this packet for the first time, therefore, because the integrated flow value of initial storage is zero, after receiving this packet for the first time, this current integrated flow value=0+10, like this, can determine that this current integrated flow value does not surpass this limit value, then the user can watch this program.
After the user selects to watch the program of other channel, when selecting this channel 1 again, this device receives the packet of this channel 1, if the statistics version of this packet is still consistent with the statistics version that stores, be 1 o'clock, then flow is added up, at this moment, this current integrated flow value=10+10=20 does not also surpass this limit value, and then the user can watch this program.
And the like, when this current integrated flow value surpasses limit value 10000, then forbid watching this program.
By the foregoing description as can be known; add up by flow the program watched; when surpassing limit value; this program is not handled; make the user can't continue to watch this program, thereby limited the quantity that the terminal use watches program, prevent that links the continuous multiple programs of watching; protect service provider's vital interests effectively, ensured service provider's just rights and interests.
Above-described specific embodiment; purpose of the present invention, technical scheme and beneficial effect are further described; institute is understood that; the above only is specific embodiments of the invention; and be not intended to limit the scope of the invention; within the spirit and principles in the present invention all, any modification of being made, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (12)
1. a televiewing control method is characterized in that, described method comprises:
The packet that receiving front-end sends, the information that described packet carries comprises flow value and limit value;
The current integrated flow value of the packet that the information butt joint of carrying according to packet is received is added up;
Judge whether described current integrated flow value surpasses described limit value;
If judged result is for being then described packet not to be dealt with.
2. method according to claim 1 is characterized in that the information that described packet carries also comprises current version information.
3. method according to claim 2 is characterized in that, the current integrated flow value of the packet that described information butt joint of carrying according to packet is received is added up, and comprising:
Judge whether described current version information is consistent with the version information that stores;
If judged result is consistent, then the current integrated flow value of the packet of reception is added up according to the integrated flow value that stores.
4. method according to claim 3 is characterized in that, if judged result is inconsistent, described method also comprises:
The version information that stores is updated to current version information;
Integrated flow value to the version information correspondence that stores is upgraded.
5. method according to claim 1 is characterized in that the information that described packet carries also comprises the current time;
Before the current integrated flow value of the packet that receives was added up, described method also comprised:
Judge whether the described current time is consistent with the time of storage;
If judged result is inconsistent, then the current integrated flow value of packet is added up;
If the judged result unanimity is not then added up the current integrated flow value of packet.
6. method according to claim 1 is characterized in that, the information that described packet carries also comprises the statistics sign;
Behind the packet that receiving front-end issues, described method also comprises:
Described packet is decrypted, to obtain the information that described packet carries;
The information that described packet is carried deposits in described statistics and identifies corresponding storage area.
7. an acceptance control device is characterized in that, described device comprises:
Receiving element, described receiving element are used for the packet that receiving front-end sends, and the information that described packet carries comprises flow value and limit value;
The current integrated flow value of the packet that the information butt joint that statistic unit, described statistic unit are used for carrying according to packet is received is added up;
First judging unit, described first judging unit are used to judge whether described current integrated flow value surpasses described limit value;
Processing unit is if the described first judgment unit judges result is for being that then described processing unit does not deal with described packet.
8. device according to claim 7 is characterized in that the information that described packet carries also comprises current version information; Described statistic unit comprises:
Second judging unit, described second judging unit are used to judge whether described current version information is consistent with the version information that stores;
Counting unit, if the judged result of described second judging unit is consistent, described counting unit is used for according to the integrated flow value that stores the current integrated flow value of the packet of reception being added up.
9. device according to claim 8 is characterized in that, described statistic unit also comprises:
The version updating unit, if the judged result of described second judging unit is inconsistent, the version information that described version updating unit is used for storing is updated to current version information;
The count update unit, if the judged result of described second judging unit is inconsistent, described count update unit is used the integrated flow value of the version information correspondence that stores is upgraded.
10. device according to claim 8 is characterized in that the information that described packet carries also comprises the current time; Described device also comprises:
The 3rd judging unit, described the 3rd judging unit are used to judge whether the described current time is consistent with the time of storage; If judged result is inconsistent, then notify described statistic unit that the current integrated flow value of packet is added up; If the judged result unanimity then notifies described statistic unit that the current integrated flow value of packet is not added up.
11. device according to claim 8 is characterized in that, described device also comprises:
Decrypting device, described decrypting device are used for described packet is decrypted, to obtain the information that described packet carries;
Memory cell, described memory cell are used to store the information that the described packet after the deciphering carries.
12. device according to claim 11 is characterized in that, the information that described packet carries also comprises the statistics sign; Described memory cell comprises at least one memory, the information that each memory stores described packet corresponding with described statistics sign carries.
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| CN200810119984.XA CN101729746B (en) | 2008-10-21 | 2008-10-21 | Televiewing control method and device |
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| CN200810119984.XA CN101729746B (en) | 2008-10-21 | 2008-10-21 | Televiewing control method and device |
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| JP2000115725A (en) * | 1998-10-02 | 2000-04-21 | Victor Co Of Japan Ltd | View limit device |
| CN2783665Y (en) * | 2005-03-21 | 2006-05-24 | 张文明 | Cable television signal metering instrument |
| US20070091920A1 (en) * | 2005-10-20 | 2007-04-26 | Harris John M | System and method for improving the capacity of a network |
| CN101022532A (en) * | 2007-03-16 | 2007-08-22 | 清华大学 | Charging realizing method adapted to flow media |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US5751335A (en) * | 1995-03-10 | 1998-05-12 | Sony Corporation | Viewing restricting method and viewing restricting apparatus |
| JP2000115725A (en) * | 1998-10-02 | 2000-04-21 | Victor Co Of Japan Ltd | View limit device |
| CN2783665Y (en) * | 2005-03-21 | 2006-05-24 | 张文明 | Cable television signal metering instrument |
| US20070091920A1 (en) * | 2005-10-20 | 2007-04-26 | Harris John M | System and method for improving the capacity of a network |
| CN101022532A (en) * | 2007-03-16 | 2007-08-22 | 清华大学 | Charging realizing method adapted to flow media |
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