CN100394794C - A method for automatic charging of cable TV - Google Patents
A method for automatic charging of cable TV Download PDFInfo
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- CN100394794C CN100394794C CNB2004100089187A CN200410008918A CN100394794C CN 100394794 C CN100394794 C CN 100394794C CN B2004100089187 A CNB2004100089187 A CN B2004100089187A CN 200410008918 A CN200410008918 A CN 200410008918A CN 100394794 C CN100394794 C CN 100394794C
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Abstract
The present invention relates to a method for carrying out scrambling/descrambling operation to television signals and deducting fees by means of intelligent cards in the charging field of cable televisions, which comprises: a signal sending step: a cable television signal sending terminal carries out the scrambling processing and the sending of television signals; sending signals comprise the television signals and encrypted control words; an encrypted key is stored in an intelligent card; a signal receiving step: a signal receiving terminal separates the encrypted control words from scrambled signals; a control word decrypting step: the signal receiving terminal utilizes the encrypted key in the intelligent card to decrypt the encrypted control words; a television signal decrypting step: the signal receiving terminal utilizes the decrypted control words to descramble the television signals which are sent out by the signal sending terminal; a fee deducting step: the corresponding cost of the service is deducted from an electronic wallet. The present invention uses the intelligent card to carry out scrambling/descrambling operation to the television signals and fee or usable time deducting for users simultaneously. The present invention has the advantage of flexible and convenient operation and performs a good protective role on the users and cable television operators.
Description
Technical field
The present invention relates to the communications field, relate in particular in the catv charge field, the employing smart card adds descrambling operation to TV signal and carries out the method for expense deduction.
Technical background
Cable TV is the most frequently used of TV reception at present both at home and abroad, also is the most basic form, in its use, by the cable of cable TV of operator, video and audio frequency is linked on the video terminal is play.Present cable TV way of paying generally are that the terminal use opens cable TV by the mode of pre-post-pay paystation, and it is indoor by operator cable of cable TV to be linked into the user.When the user does not have regular paying, operator will insert indoor cable of cable TV and block, and stop to provide service.
Present cable TV way of paying are just controlled the user at physical layer, and means are comparatively outmoded, depend on the conscious of user to a great extent and pay dues.The user that do not pay dues can be easily reconnects the transmission cable of cable TV, for cable television operators bring very big trouble.
Summary of the invention
The development in cable TV market requires in smart card cable TV signal to be carried out descrambling operation, reduces expense according to the standard of charge simultaneously.
The present invention adopts following technical scheme for this reason:
A kind of method of cable TV automatic charging is characterized in that comprising:
Send signals step: the cable TV signal transmitting terminal carries out scrambling to TV signal to be handled and sends, and this transmission signal comprises TV signal and encrypted control word, and this encryption key is stored in the smart card;
The received signal step: signal receiving end is isolated the control word of encryption from the signal of scrambling;
The decryption control words step: signal receiving end utilizes the secret key decryption control word in the smart card;
Deciphering TV signal step: the TV signal that the control word descrambling transmitting terminal after the signal receiving end utilization deciphering sends;
Deduction step: the valency of reply mutually of this business of deduction from stored value card.
Described decryption control words step is periodically to carry out.
Described deduction step is control word of every deciphering, then carries out once.
Described TV signal is the MPEG-2 form.
Described deduction step is an expense in the deduction stored value card.
Described deduction step is the up duration in the deduction stored value card.
The present invention adds descrambling operation with smart card to the signal of cable TV, reduces user's expense or up duration simultaneously, and its flexible and convenient operation can play a very good protection to user and cable television operators.
Description of drawings
Fig. 1 is a conditional access system schematic diagram of the present invention;
Fig. 2 is a schematic flow sheet of the present invention.
Embodiment
Below in conjunction with Figure of description the specific embodiment of the present invention is described.
Stored value card is mainly used in payment technical field, in order to make the IC-card with payment function develop into real electronic money, country breaks the boundary of finance and non-financial field just in unified planning, issue a kind of IC-card, it can be used in all payment technical field.At present, " China's finance integrated circuit card standard " released, and financial IC card will be promoted the use of in the whole nation, and it just has stored value card.Be to issue voluntarily, can the inter-bank intercommunication of national different regions use mutually again by each department, each bank; Both can be used for commercial consumption, and can be used for again paying in cash etc., used very convenient.Financial IC card might develop into a kind of universal electric currency in the future.
This method is the PPV technology that belongs to pre-payment, guarantees that user's (being referred to as authorized user) of charges paid can receive the TV programme and the service business of having subscribed, then can't obtain this kind business to the unpaid expense family.Pay TV just is meant such conception of species.It must solve two problems, and promptly watches those unwarranted pay channels from user's collection of charges and prevention user.
Network environment shown in Figure 1 is existing at present more rational encrypting and deciphering system structure of generally acknowledging.As shown in Figure 1, the basic at present MPEG2 of the employing form of the transmission of TV signal at present transmits, in the MPEG2 standard, above-mentioned access control generally adopts the scrambling mode to carry out, i.e. the digital signal of all transmission uses an outstanding control word CW to carry out transmitting after the scrambling computing, and receiving terminal only obtains CW, could reduce digital signal by descrambling, its scrambling, descrambling technology are ripe, and therefore, the problems referred to above can be reduced to safe transfer and the use of controlling the CW word.
The present invention proposes by the control to CW and charge, as shown in Figure 2, is schematic flow sheet of the present invention, and as we can see from the figure, concrete steps of the present invention are as follows:
Send signals step: the cable TV signal transmitting terminal carries out scrambling to TV signal to be handled, and this transmission signal comprises TV signal and encrypted control word, and this encryption key is stored in the smart card;
The received signal step: signal receiving end is isolated the control word of encryption from the signal of scrambling;
The decryption control words step: signal receiving end utilizes the secret key decryption control word in the smart card;
Deciphering TV signal step: the TV signal that the control word descrambling transmitting terminal after the signal receiving end utilization deciphering sends;
Deduction step: the valency of reply mutually of this business of deduction from stored value card.
The present invention is from the TV signal of scrambling, and the CW that isolates encrypted solves correct CW with the SK in the smart card, flows with this CW descrambling MPEG-2 then.From stored value card, deduct corresponding cost simultaneously.This frequency can be 10 seconds once, also can decide according to actual conditions.
The deduction action is finished by IC-card, is the IC-card that authenticates through operator.Present existing technology can be supported the deduction operation fully.As long as IC-card has been correctly decoded encrypted packet and just can have deducted.
For stored value card, can be set as follows, can store the remaining expense of user in it, also can show as the service that the user accepts with other form, such as being remaining service time, this can be provided with flexibly by operator.
The present invention is by certain time interval, successfully solves a CW at every turn and just reduces corresponding cost or corresponding service.
Existing cable TV is monthly payment, there is no the technology of any real time billing, and the method will be the very big improvement to original system.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claims.
Claims (5)
1. the method for a cable TV automatic charging is characterized in that comprising:
Send signals step: the cable TV signal transmitting terminal carries out scrambling to TV signal to be handled and sends, and this transmission signal comprises TV signal and encrypted control word, and this encryption key is stored in the smart card;
The received signal step: signal receiving end is isolated the control word of encryption from the signal of scrambling;
The decryption control words step: signal receiving end utilizes the secret key decryption control word in the smart card;
Deciphering TV signal step: the TV signal that the control word descrambling transmitting terminal after the signal receiving end utilization deciphering sends;
Deduction step: the valency of reply mutually of this business of deduction from stored value card, described deduction step is that control word of every deciphering is then carried out once.
2. the method for claim 1 is characterized in that described decryption control words step, is periodically to carry out.
3. the method for claim 1 is characterized in that described TV signal, is the MPEG-2 form.
4. the method for claim 1 is characterized in that described deduction step, is the expense in the deduction stored value card.
5. the method for claim 1 is characterized in that described deduction step, is the up duration in the deduction stored value card.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100089187A CN100394794C (en) | 2004-03-15 | 2004-03-15 | A method for automatic charging of cable TV |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100089187A CN100394794C (en) | 2004-03-15 | 2004-03-15 | A method for automatic charging of cable TV |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1671205A CN1671205A (en) | 2005-09-21 |
| CN100394794C true CN100394794C (en) | 2008-06-11 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100089187A Expired - Fee Related CN100394794C (en) | 2004-03-15 | 2004-03-15 | A method for automatic charging of cable TV |
Country Status (1)
| Country | Link |
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| CN (1) | CN100394794C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101826233B (en) * | 2008-03-07 | 2012-05-02 | 北京握奇数据***有限公司 | Device for remote state management of electronic purse |
| CN101247188B (en) * | 2008-03-07 | 2011-04-20 | 李慧镝 | Method for remotely managing electronic purse state |
| CN101594513B (en) * | 2008-05-29 | 2011-08-03 | 北京视博数字电视科技有限公司 | Program ordering method of conditional access system, conditional access system front-end and terminal |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1158203A (en) * | 1994-08-19 | 1997-08-27 | 汤姆森消费电子有限公司 | System for processing a video signal via series-connected high speed signal processing smart cards |
| CN2318776Y (en) * | 1997-09-19 | 1999-05-12 | 方太命 | Charged controller for wired television |
| CN1284818A (en) * | 2000-09-29 | 2001-02-21 | 清华大学 | Full digital conditioned receiving method for video broadcost in cable TV network |
| CN2523157Y (en) * | 2000-03-10 | 2002-11-27 | 包头钢铁学院 | Addressing, ciphering-deciphering television charging apapratus |
| CN2563868Y (en) * | 2002-05-10 | 2003-07-30 | *** | Automatic automatic payment controller for new cable television |
| CN2636545Y (en) * | 2003-09-02 | 2004-08-25 | 崔江保 | Wired digital television set top box precharging control system |
| CN2638365Y (en) * | 2003-08-11 | 2004-09-01 | 李相勤 | Pay television charge controller |
-
2004
- 2004-03-15 CN CNB2004100089187A patent/CN100394794C/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1158203A (en) * | 1994-08-19 | 1997-08-27 | 汤姆森消费电子有限公司 | System for processing a video signal via series-connected high speed signal processing smart cards |
| CN2318776Y (en) * | 1997-09-19 | 1999-05-12 | 方太命 | Charged controller for wired television |
| CN2523157Y (en) * | 2000-03-10 | 2002-11-27 | 包头钢铁学院 | Addressing, ciphering-deciphering television charging apapratus |
| CN1284818A (en) * | 2000-09-29 | 2001-02-21 | 清华大学 | Full digital conditioned receiving method for video broadcost in cable TV network |
| CN2563868Y (en) * | 2002-05-10 | 2003-07-30 | *** | Automatic automatic payment controller for new cable television |
| CN2638365Y (en) * | 2003-08-11 | 2004-09-01 | 李相勤 | Pay television charge controller |
| CN2636545Y (en) * | 2003-09-02 | 2004-08-25 | 崔江保 | Wired digital television set top box precharging control system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1671205A (en) | 2005-09-21 |
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Granted publication date: 20080611 Termination date: 20130315 |