CN107749999A - Parallel method inside a kind of digital television conditional access system - Google Patents
Parallel method inside a kind of digital television conditional access system Download PDFInfo
- Publication number
- CN107749999A CN107749999A CN201710894012.7A CN201710894012A CN107749999A CN 107749999 A CN107749999 A CN 107749999A CN 201710894012 A CN201710894012 A CN 201710894012A CN 107749999 A CN107749999 A CN 107749999A
- Authority
- CN
- China
- Prior art keywords
- entitlement
- management
- message
- cas
- control
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/236—Assembling of a multiplex stream, e.g. transport stream, by combining a video stream with other content or additional data, e.g. inserting a URL [Uniform Resource Locator] into a video stream, multiplexing software data into a video stream; Remultiplexing of multiplex streams; Insertion of stuffing bits into the multiplex stream, e.g. to obtain a constant bit-rate; Assembling of a packetised elementary stream
- H04N21/2368—Multiplexing of audio and video streams
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/238—Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidth; Processing of multiplex streams
- H04N21/2389—Multiplex stream processing, e.g. multiplex stream encrypting
- H04N21/23895—Multiplex stream processing, e.g. multiplex stream encrypting involving multiplex stream encryption
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
- H04N21/266—Channel or content management, e.g. generation and management of keys and entitlement messages in a conditional access system, merging a VOD unicast channel into a multicast channel
- H04N21/26606—Channel or content management, e.g. generation and management of keys and entitlement messages in a conditional access system, merging a VOD unicast channel into a multicast channel for generating or managing entitlement messages, e.g. Entitlement Control Message [ECM] or Entitlement Management Message [EMM]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
- H04N21/835—Generation of protective data, e.g. certificates
- H04N21/8352—Generation of protective data, e.g. certificates involving content or source identification data, e.g. Unique Material Identifier [UMID]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
- H04N21/835—Generation of protective data, e.g. certificates
- H04N21/8355—Generation of protective data, e.g. certificates involving usage data, e.g. number of copies or viewings allowed
- H04N21/83555—Generation of protective data, e.g. certificates involving usage data, e.g. number of copies or viewings allowed using a structured language for describing usage rules of the content, e.g. REL
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/85—Assembly of content; Generation of multimedia applications
- H04N21/854—Content authoring
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Computer Security & Cryptography (AREA)
- Databases & Information Systems (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The present invention relates to digital television signal to send field, parallel method inside more particularly to a kind of digital television conditional access system.The invention provides parallel method inside " inside is with close " CAS of a kind of different CAS functions that different CAS suppliers can be integrated in same CAS Server or version.By the present invention in that it is segmented ID with different ECM（Control segment identification）The CAS data of uniform packing are combined together as after different ECM data are distinguish between（Total Entitlement Control Message frame sequence）, realize in same CAS Server while generate different CAS functions or the ECM data of version, by sharing PID realizations and digital television devices（Scrambling machine）Unified interface, so as to realizing the program encryption function of different editions.
Description
Technical field
The present invention relates to digital television signal to send field, inside more particularly to a kind of digital television conditional access system simultaneously
Row method.
Background technology
Current digital TV network typically all can deployment conditions reception system（CAS）Come ensure the safety of programme information and
The legitimate rights and interests of operator.The data flow related to channel encryption caused by CAS（Authorize encoded information stream ECM）With with terminal conduit
Manage related data flow（Entitlement Management Message stream EMM）Transmitted in a network with together with audiovisual frequency in digital TV code stream.At the same time
During the multiple cas systems of installation and deployment, respective itself the independently transmitted related data flow of each cas system；Generally, different CAS productions
Raw data flow, with different frame identifiers（PID）It is distinguished by；Terminal device corresponding to CAS, receiving digital television program
When, in addition to receiving and handling the audio-video code stream of program, data flow caused by the cas system can be also received and handle,
To complete the decryption of program and terminal management function.Different cas systems have different functional characteristics and algorithm, these features and
Algorithm can be embodied in its caused data flow.
Today's society information technology is maked rapid progress, and is inevitably occurred and is carried out function renewal to original cas system
Situation, and update normally result in data flow caused by CAS data format and content it is different from legacy version；Renewal compared with
Greatly, original hardware terminal can not by software upgrading to adapt to redaction when, must just use different cas system services simultaneously
Device is respectively new and old offering customers service；Namely while being sent for frequent customer using original formatted data stream, for new visitor
Family sends the related code stream of redaction.And then with the increase of update, while the cas system clothes of the different editions run
Business device can may also increase；This can not only increase substantially the operation cost of operator, meanwhile, actually headend equipment（As added
Disturb machine）The increase of unconfined support input port is also impossible to, these factors all can cause the maintenance work of service provider to be difficult to
For after.
The content of the invention
It is specific it is an object of the invention to overcome the cas system server that generally use is different in the prior art individually to produce
CAS code streams, and then the problem of cause operator's O＆M cost increase simultaneously, there is provided one kind produces in a CAS Server
Include the parallel method of different editions CAS code streams.
In order to realize foregoing invention purpose, the invention provides following technical scheme：
Parallel method inside a kind of digital television conditional access system, is comprised the following steps：
Receive scrambled control word；The scrambled control word is generally generated by scrambling machine；
With reference to the scrambled control word, Entitlement Control Message is generated respectively according at least two Entitlement Control Message create-rules
（ECM）；The condition receiving system that the quantity of Entitlement Control Message create-rule is completed with server needs（CAS）Species or version
This quantity correlation such as can be a kind, 2 kinds or a variety of；It both can be the different editions of identical conditions reception system, can also
It is the condition receiving system of entirely different species.
For every kind of Entitlement Control Message, corresponding control segment identification is set respectively；The control segment identification is generally preferable
It is arranged on the original position of each Entitlement Control Message；The control segment identification generally with a kind of Entitlement Control Message create-rule
Correspond；That is, can uniquely determine the Entitlement Control Message by the control segment identification is believed by any authorization control
Cease create-rule generation.
It is total Entitlement Control Message frame sequence by various Entitlement Control Messages composition, and unified control frame identification is set.
Various Entitlement Control Messages are formed into total Entitlement Control Message frame sequence generally can be by TS（Transport Stream, transport stream）
Complete, can also be completed in other ad hoc steps during encapsulation；In a preferred approach, it can use and be equipped with control by each
The mode that the Entitlement Control Message of segment identification is sequentially connected forms total Entitlement Control Message frame sequence.
Further, also comprise the following steps：
Receiving terminal management instructs；The terminal management information generally can be by subscriber management system（SMS）Generation；
Instructed with reference to the terminal management, Entitlement Management Message is generated respectively according at least two Entitlement Management Message create-rules
（EMM）；The condition receiving system that the quantity of Entitlement Management Message create-rule is completed with server needs（CAS）Species or version
This quantity correlation such as can be a kind, 2 kinds or a variety of；It both can be the different editions of identical conditions reception system, can also
It is the condition receiving system of entirely different species.
For every kind of Entitlement Management Message, management segment identification is set respectively；The management segment identification is generally preferable to be arranged on
The original position of each Entitlement Management Message；But according to special setting, end position can also be arranged on；The management is segmented
Mark generally corresponds with a kind of Entitlement Management Message create-rule；That is, can be uniquely determined by the management segment identification
The Entitlement Management Message is generated by any Entitlement Management Message create-rule.
It is total Entitlement Management Message frame sequence by various Entitlement Management Messages composition, and unified management frame identification is set；
Various Entitlement Management Messages are formed into total Entitlement Management Message frame sequence generally can be by TS（Transport Stream, transport stream）
Complete, can also be completed in other ad hoc steps during encapsulation；In a preferred approach, it can use and be equipped with management by each
The mode that the Entitlement Management Message of segment identification is sequentially connected forms total Entitlement Management Message frame sequence.
Further, the terminal management instruction includes terminal ID info and command information.
Above-mentioned total Entitlement Control Message frame sequence and total Entitlement Management Message frame sequence are generally added by multiplexer with passing through
Disturb the video flowing after encryption, audio stream is together sent to customers' place, decoding decryption is completed by the reception of client and deciphering module
Work.So as to,
Further, also comprise the following steps：
Total Entitlement Control Message frame sequence is isolated according to the control frame identification；That is, user is according to the control frame
Mark separates total Entitlement Control Message frame sequence from code stream；Further according to the CAS versions or species of user terminal certainly
The Entitlement Control Message according to corresponding Entitlement Control Message create-rule generation is found in total Entitlement Control Message frame sequence.
Specifically, because the control segment identification can uniquely correspond to a kind of CAS versions or species, in the application, according to institute
Control segment identification is stated to isolate the Entitlement Control Message according to corresponding control create-rule generation.When Entitlement Control Message point
After separating out, user terminal further can be parsed and handled to Entitlement Control Message according to routine techniques.
Further, also comprise the following steps：
The step of total Entitlement Management Message frame sequence is isolated according to the management frame identification；That is, user is according to described
Management frame identification separates total Entitlement Management Message frame sequence from code stream；Further according to the CAS versions of user terminal or
Species finds the mandate pipe according to corresponding Entitlement Management Message create-rule generation from total Entitlement Management Message frame sequence
Manage information.Specifically, because the management segment identification can uniquely correspond to a kind of CAS versions or species, the application
In, the mesh for isolating the Entitlement Management Message of corresponding management create-rule generation can be realized according to the management segment identification
's.
Further, the Entitlement Control Message create-rule and/or Entitlement Management Message create-rule are based on any
The rule of condition receiving system.A variety of Entitlement Control Message create-rules are different, various Entitlement Management Message create-rules
It is different；Meanwhile for same middle CAS versions or species for, correspond to a kind of Entitlement Control Message create-rule and one
Kind Entitlement Management Message create-rule.
Further, described at least two Entitlement Control Message create-rule and/or Entitlement Management Message the generation rule
Then completed by a condition receiving system server.
Compared with prior art, beneficial effects of the present invention：The present invention needs transmission more for operator in the prior art
, it is necessary to individually produce specific CAS code streams using different cas system servers during kind of cas system, and and then cause operator
A kind of the problem of O＆M cost increase, there is provided difference that different CAS suppliers can be integrated in same CAS Server
Parallel method inside " inside is with close " CAS of CAS functions or version.
We generate different CAS functions or the ECM data of version simultaneously using same CAS Server, by using difference
ECM segmentation ID（Control segment identification）The CAS of uniform packing is combined together as after different ECM data are distinguish between
Data（Total Entitlement Control Message frame sequence）, by sharing PID realizations and digital television devices（Scrambling machine）Unified interface, from
And realize the program encryption function of different editions；
Meanwhile a variety of EMM data caused by a variety of CAS versions or function are based on using same CAS Server, again by use
Different EMM segmentations ID（（Manage segment identification）The EMM data of uniform packing are formed after being distinguish between（Total Entitlement Management Message
Frame sequence）Afterwards, by sharing PID realizations and digital television devices（Multiplexer）Unified interface, by using different EMM point
Section ID, realize the terminal management function of different editions.
Brief description of the drawings：
Fig. 1 is that total Entitlement Control Message frame sequence generates schematic diagram in the parallel method embodiment that invention provides.
Fig. 2 is that total Entitlement Management Message frame sequence generates schematic diagram in the parallel method embodiment that invention provides.
Embodiment
Below in conjunction with the accompanying drawings and specific embodiment the present invention is described in further detail.But this should not be interpreted as to this
The scope for inventing above-mentioned theme is only limitted to following embodiment, all to belong to the present invention based on the technology that present invention is realized
Scope.
Embodiment 1：As shown in Figure 1 and Figure 2, the present embodiment provides parallel side inside a kind of digital television conditional access system
Method, comprise the following steps：
Receive scrambled control word；The scrambled control word is generally generated by scrambling machine；
With reference to the scrambled control word, Entitlement Control Message is generated respectively according at least two Entitlement Control Message create-rules
（ECM）；The condition receiving system that the quantity of Entitlement Control Message create-rule is completed with server needs（CAS）Species or version
This quantity correlation such as can be a kind, 2 kinds or a variety of；It both can be the different editions of identical conditions reception system, can also
It is the condition receiving system of entirely different species.
For every kind of Entitlement Control Message, corresponding control segment identification is set respectively；The control segment identification is generally preferable
Be arranged on the original position of each Entitlement Control Message control segment identification generally with a kind of Entitlement Control Message create-rule
Correspond；That is, can uniquely determine the Entitlement Control Message by the control segment identification is believed by any authorization control
Cease create-rule generation.
It is total Entitlement Control Message frame sequence by various Entitlement Control Messages composition, and control frame identification is set.Will be various
Entitlement Control Message forms total Entitlement Control Message frame sequence generally can be by TS（Transport Stream, transport stream）During encapsulation
Complete, can also be completed in other ad hoc steps；In a preferred approach, it can use and be equipped with control segmentation mark by each
The mode that the Entitlement Control Message of knowledge is sequentially connected forms total Entitlement Control Message frame sequence.
Also comprise the following steps：Receiving terminal management instructs；The terminal management information generally can be by subscriber management system
（SMS）Generation, including terminal ID info and command information.
Instructed with reference to the terminal management, empowerment management is generated respectively according at least two Entitlement Management Message create-rules
Information（EMM）；The condition receiving system that the quantity of Entitlement Management Message create-rule is completed with server needs（CAS）Species or
Person's version quantity correlation such as can be a kind, 2 kinds or a variety of；It both can be the different editions of identical conditions reception system,
It can be the condition receiving system of entirely different species.
For every kind of Entitlement Management Message, management segment identification is set respectively；The management segment identification is generally preferable to be arranged on
The original position of each Entitlement Management Message；The management segment identification generally with a kind of a pair of Entitlement Management Message create-rule 1
Should；That is, can uniquely determine the Entitlement Management Message by the management segment identification is generated by any Entitlement Management Message
Rule generation.
It is total Entitlement Management Message frame sequence by various Entitlement Management Messages composition, and unified management frame identification is set；
Various Entitlement Management Messages are formed into total Entitlement Management Message frame sequence generally can be by TS（Transport Stream, transport stream）
Complete, can also be completed in other ad hoc steps during encapsulation；In a preferred approach, it can use and be equipped with management by each
The mode that the Entitlement Management Message of segment identification is sequentially connected forms total Entitlement Management Message frame sequence.
Above-mentioned total Entitlement Control Message frame sequence and total Entitlement Management Message frame sequence are generally added by multiplexer with passing through
Disturb the video flowing after encryption, audio stream is together sent to customers' place, complete to receive by the reception of client and deciphering module and conciliate
Close work.So as to,
And at the client at user, using following steps to total Entitlement Management Message frame sequence and total Entitlement Control Message frame
Sequence is parsed：
The step of total Entitlement Management Message frame sequence is isolated according to the management frame identification；That is, user is according to described
Management frame identification separates total Entitlement Management Message frame sequence from code stream；Further according to the CAS versions of user terminal or
Species, the mandate pipe according to corresponding Entitlement Management Message create-rule generation is found from total Entitlement Management Message frame sequence
Manage information.Specifically, because the management segment identification can uniquely correspond to a kind of CAS versions or species, can basis
Management segment identification isolates the Entitlement Management Message according to corresponding management create-rule generation.
Meanwhile total Entitlement Control Message frame sequence is isolated according to the control frame identification；That is, user is according to institute
Control frame identification is stated to separate total Entitlement Control Message frame sequence from code stream；Further according to the CAS versions of user terminal
Or species finds the mandate according to corresponding Entitlement Control Message create-rule generation from total Entitlement Control Message frame sequence
Control information.Specifically, because the control segment identification can uniquely correspond to a kind of CAS versions or species, Ke Yigen
The Entitlement Control Message according to corresponding control information create-rule generation is isolated according to the control segment identification.Controlled when authorizing
After information processed is isolated, user terminal can carry out subsequent treatment according to routine techniques to Entitlement Control Message.
In the present embodiment, the Entitlement Control Message create-rule and/or Entitlement Management Message create-rule be based on appoint
The rule of meaning condition receiving system.A variety of Entitlement Control Message create-rules are different, various Entitlement Management Message generation rule
It is then different；Meanwhile for same middle CAS versions or species for, correspond to a kind of Entitlement Control Message create-rule and
A kind of Entitlement Management Message create-rule.
In the present embodiment, at least two Entitlement Control Message create-rule and/or the Entitlement Management Message generation
Rule is completed by a condition receiving system server.
In specific example as shown in Figure 1 and Figure 2, the first cas system version is included simultaneously in same CAS Server
With two cas system versions of the second cas system version, i.e. in same CAS Server, while comprising with the first cas system version
Corresponding first Entitlement Control Message create-rule and the second Entitlement Control Message corresponding with the second cas system version generation rule
Then, CW is received from scrambling machine in CAS Server（Scrambled control word）After code stream, respectively simultaneously according to the first Entitlement Control Message
Create-rule generates the first Entitlement Control Message ECMG-A and authorized according to the second Entitlement Control Message create-rule generation second
Control information ECMG-B, in order to be made a distinction to two Entitlement Control Messages, respectively in the first Entitlement Control Message in the application
ECMG-A heads set control segment identification, specifically, being set and the first CAS systems in the first Entitlement Control Message ECMG-A packet header
Unite the first control segment identification ECM_ segmentations ID_A corresponding to version；Set and the in the second Entitlement Control Message ECMG-B packet header
Second control segment identification ECM_ segmentations ID_B corresponding to two cas system versions；And control segmentation mark will be included when TS is encapsulated
The first Entitlement Control Message ECMG-A, the second Entitlement Control Message ECMG-B known is encapsulated as total Entitlement Control Message frame sequence,
And control frame identification ECM PID are set in total Entitlement Control Message frame sequence packet header, total authorization control is distinguished with identification and believed
Cease frame sequence code stream；And the code stream and video, audio code stream are together sent to user terminal by multiplexer.
Meanwhile the CAS Server is also from subscriber management system（SMS）Middle receiving terminal management instruction；The terminal management refers to
Order includes terminal ID info and command information as shown in Figure 2；The CAS Server is equally comprising corresponding with the first cas system version
The first Entitlement Management Message create-rule and the second Entitlement Management Message create-rule corresponding with the second cas system version,
And the first Entitlement Management Message EMMG- of generation is instructed according to the first Entitlement Management Message create-rule combination terminal management respectively
A, the second Entitlement Management Message EMMG-B is generated according to the second Entitlement Management Message create-rule, likewise, in order to distinguish this
First Entitlement Management Message EMMG-A and second Entitlement Management Message EMMG-B, we are respectively in the first Entitlement Management Message
EMMG-A and second Entitlement Management Message EMMG-B sets management segment identification, specifically, in the first Entitlement Management Message
EMMG-A packet header sets ECM_ segmentation ID_A corresponding with the first Entitlement Management Message create-rule, in the second Entitlement Management Message
EMMG-B packet header sets ECM_ segmentation ID_B corresponding with the second Entitlement Management Message create-rule, is encapsulated further across TS,
The first Entitlement Management Message EMMG-A and the second Entitlement Management Message EMMG-B comprising management segment identification are combined into and always awarded
Management information frame sequence is weighed, and sets up the management frame identification EMM that total Entitlement Management Message frame sequence code stream is distinguished for identifying
PID, and the code stream and video, audio code stream are together sent to user terminal by multiplexer.
Claims (7)
1. parallel method inside a kind of digital television conditional access system, it is characterised in that comprise the following steps：
Receive scrambled control word；
With reference to the scrambled control word, Entitlement Control Message is generated respectively according at least two Entitlement Control Message create-rules；
For every kind of Entitlement Control Message, corresponding control segment identification is set respectively；
It is total Entitlement Control Message frame sequence by various Entitlement Control Messages composition, and control frame identification is set.
2. the method as described in claim 1, it is characterised in that also comprise the following steps：
Receiving terminal management instructs；
Instructed with reference to the terminal management, empowerment management letter is generated respectively according at least two Entitlement Management Message create-rules
Breath；
For every kind of Entitlement Management Message, management segment identification is set respectively；
It is total Entitlement Management Message frame sequence by various Entitlement Management Messages composition, and management frame identification is set.
3. method as claimed in claim 2, it is characterised in that the terminal management instruction includes terminal ID info and instruction is believed
Breath.
4. method as claimed in claim 2, it is characterised in that also comprise the following steps：
The step of total Entitlement Control Message frame sequence is isolated according to the control frame identification；
The Entitlement Control Message generated according to corresponding control information create-rule is isolated according to the control segment identification
Step.
5. method as claimed in claim 2, it is characterised in that also comprise the following steps：
The step of total Entitlement Management Message frame sequence is isolated according to the management frame identification；
The Entitlement Management Message generated according to corresponding management creating info rules is isolated according to the management segment identification
Step.
6. method as claimed in claim 2, it is characterised in that the Entitlement Control Message create-rule and/or empowerment management
Creating info rules are the rule based on any condition receiving system.
7. method as claimed in claim 2, it is characterised in that at least two Entitlement Control Message create-rule
And/or Entitlement Management Message create-rule is completed by a condition receiving system server.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710894012.7A CN107749999B (en) | 2017-09-28 | 2017-09-28 | A kind of digital television conditional access system inside parallel method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710894012.7A CN107749999B (en) | 2017-09-28 | 2017-09-28 | A kind of digital television conditional access system inside parallel method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107749999A true CN107749999A (en) | 2018-03-02 |
| CN107749999B CN107749999B (en) | 2019-10-22 |
Family
ID=61255238
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710894012.7A Active CN107749999B (en) | 2017-09-28 | 2017-09-28 | A kind of digital television conditional access system inside parallel method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107749999B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108650549A (en) * | 2018-05-09 | 2018-10-12 | 深圳市汇星数字技术有限公司 | Digital TV data management method and system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102075812A (en) * | 2010-08-10 | 2011-05-25 | 深圳市九洲电器有限公司 | Data receiving method and system of digital television |
| CN102523484A (en) * | 2011-12-27 | 2012-06-27 | 山东泰信电子有限公司 | System and method for scrambling digital television data |
| CN102761777A (en) * | 2012-07-30 | 2012-10-31 | 山东泰信电子股份有限公司 | Multiple-CA (conditional access) simulcrypt system and method |
| JP2015056768A (en) * | 2013-09-11 | 2015-03-23 | 株式会社東芝 | Content transmitter, content receiver, content transmission method, and content reception method |
| CN105744354A (en) * | 2014-12-08 | 2016-07-06 | 深圳Tcl数字技术有限公司 | Scrambled transmit stream descrambling method and system |
| CN105959738A (en) * | 2016-06-22 | 2016-09-21 | 北京数字太和科技有限责任公司 | Bidirectional conditional access system and method |
-
2017
- 2017-09-28 CN CN201710894012.7A patent/CN107749999B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102075812A (en) * | 2010-08-10 | 2011-05-25 | 深圳市九洲电器有限公司 | Data receiving method and system of digital television |
| CN102523484A (en) * | 2011-12-27 | 2012-06-27 | 山东泰信电子有限公司 | System and method for scrambling digital television data |
| CN102761777A (en) * | 2012-07-30 | 2012-10-31 | 山东泰信电子股份有限公司 | Multiple-CA (conditional access) simulcrypt system and method |
| JP2015056768A (en) * | 2013-09-11 | 2015-03-23 | 株式会社東芝 | Content transmitter, content receiver, content transmission method, and content reception method |
| CN105744354A (en) * | 2014-12-08 | 2016-07-06 | 深圳Tcl数字技术有限公司 | Scrambled transmit stream descrambling method and system |
| CN105959738A (en) * | 2016-06-22 | 2016-09-21 | 北京数字太和科技有限责任公司 | Bidirectional conditional access system and method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108650549A (en) * | 2018-05-09 | 2018-10-12 | 深圳市汇星数字技术有限公司 | Digital TV data management method and system |
| CN108650549B (en) * | 2018-05-09 | 2020-10-23 | 深圳市汇星数字技术有限公司 | Digital television data management method and system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107749999B (en) | 2019-10-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101268623B1 (en) | Processing an mpeg elementary stream in a conditional access overlay environment | |
| US8532075B2 (en) | Transitioning to secure IP communications for encoding, encapsulating, and encrypting data | |
| KR101174947B1 (en) | Multi-stream ciphering method for multi-channel recording, multi-stream ciphering apparatus and host device | |
| US9813761B2 (en) | System and method for conditional access in an in-home network based on multi-network communication | |
| US6069956A (en) | Method and apparatus for encrypting multiplexed data streams using key information continued in streams | |
| KR20070051314A (en) | System and method for reduced hierarchy key management | |
| KR20010105384A (en) | A global copy protection system for digital home networks | |
| GB2417654A (en) | Providing access to stored data by multiple home consumer appliances which support different data communication technologies | |
| US8571213B2 (en) | Security method for preventing the unauthorized use of multimedia contents | |
| US8850590B2 (en) | Systems and methods for using transport stream splicing for programming information security | |
| CN107749999B (en) | A kind of digital television conditional access system inside parallel method | |
| KR20050009227A (en) | Individual video encryption system and method | |
| US20080037782A1 (en) | Reduction of channel change time for digital media devices using key management and virtual smart cards | |
| CN108650549B (en) | Digital television data management method and system | |
| WO2010048879A1 (en) | Method and apparatus for right encryption in set top box | |
| CN1476724A (en) | Eneryption system of wired television network | |
| EP3053343B1 (en) | Descrambling of data according to the properties of the control words | |
| CA2856456C (en) | Method, cryptographic system and security module for descrambling content packets of a digital transport stream | |
| US20050177743A1 (en) | Method and system for a consumer upgradeable decoder | |
| Villegas et al. | Network assisted content protection architectures for a connected world | |
| Jeong et al. | Design and implementation of headend servers for downloadable CAS | |
| EP2879392A1 (en) | Descrambling of data according to the properties of the control words |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |