CN105282590A - Set top box - Google Patents
Set top box Download PDFInfo
- Publication number
- CN105282590A CN105282590A CN201510596018.7A CN201510596018A CN105282590A CN 105282590 A CN105282590 A CN 105282590A CN 201510596018 A CN201510596018 A CN 201510596018A CN 105282590 A CN105282590 A CN 105282590A
- Authority
- CN
- China
- Prior art keywords
- module
- top box
- set top
- digital television
- box according
- 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.)
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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]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/426—Internal components of the client ; Characteristics thereof
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- 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]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/418—External card to be used in combination with the client device, e.g. for conditional access
- H04N21/4182—External card to be used in combination with the client device, e.g. for conditional access for identification purposes, e.g. storing user identification data, preferences, personal settings or data
-
- 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]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
- H04N21/4367—Establishing a secure communication between the client and a peripheral device or smart card
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Computing Systems (AREA)
- General Engineering & Computer Science (AREA)
- Stored Programmes (AREA)
Abstract
The invention discloses a set top box which includes a system software module, a digital TV application module; and at least a CAS module, wherein the digital TV application module is operated through the system software module, and the digital TV application module calls the at least one CAS module so as to play digital TV programs.
Description
Technical field
The present invention relates to digital television techniques field, more specifically, relate to a kind of Set Top Box.
Background technology
At present, Set Top Box mainly non intelligent type.In the Set Top Box of prior art, " plateform system software and corresponding related libraries " and " digital television application " are compiled and are linked into one and video.In this case, if a software module in upgrading reflection (such as, an interface in conditional access system CAS module or electric program menu EPG) or increase a function in reflection, just need to recompilate and link all programs to generate a new reflection.In this process, need by the guiding software (such as, bootloader software) of Set Top Box by new boot image download and programming in the flash memory of Set Top Box.When Set Top Box starts, this new reflection is integrally loaded in the SDRAM of Set Top Box and is used for running.
A kind of structure of Set Top Box of prior art has been shown in Fig. 1.As shown in Figure 1, Set Top Box 1001 comprises system software module 1002, digital television application module 1003, CAS module 1004.Digital television application module 1003 is run by system software module 1002.System software module 1002 also comprises library module 1008, the storehouse for storing, needed for management system operation.
In addition, driver module 1005, interface module 1006, descrambling module 1009, filtering module 1010 etc. can also be comprised in Set Top Box 1001.Driver module 1005 is for each interface of driving machine top box.Interface module 1006 is such as accepting CAS smart card 1007.These modules are all well known in the prior art, therefore, are here not described in detail.
In the prior art, system software module 1002, digital television application module 1003, CAS module 1004 are compiled in a reflection usually.
Summary of the invention
An object of the present invention is to provide a kind of new solution for Set Top Box.
According to a first aspect of the invention, provide a kind of Set Top Box, comprising: system software module; Digital television application module; And at least one CAS module, wherein, digital television application module is run by system software module, and digital television application module calls at least one CAS module described, for broadcasting Digital Television.
Preferably, at least one CAS module described is loaded in transient memory.
Preferably, described digital television application module is configured to the hashed value at least partially calculating CAS module, and verifies CAS module by described hashed value, to determine whether to run this CAS module.
Preferably, described digital television application module is configured to the hashed value at least partially prestoring described CAS module, and verifies CAS module based on stored hashed value and the hashed value calculated.
Preferably, described digital television application module sends the hashed value calculated to authentication server, for checking.
Preferably, described hashed value is sent out with the first cipher mode.
Preferably, described first cipher mode comprises at least one in symmetric cryptography mode and asymmetric encryption mode.
Preferably, described first cipher mode comprises using and stirs factor pair key and stir.
Preferably, the described stirring factor is at least one in time, coordinate, the network address.
Preferably, described CAS module is configured to communicate with CAS smart card, wherein, uses the second cipher mode to being encrypted at least partially in described communication.
Preferably, described second cipher mode comprises using and stirs factor pair key and stir.
Preferably, the described stirring factor is at least one in time, coordinate, the network address.
By referring to the detailed description of accompanying drawing to exemplary embodiment of the present invention, further feature of the present invention and advantage thereof will become clear.
Accompanying drawing explanation
In the description combined and the accompanying drawing forming a part for specification shows embodiments of the invention, and illustrate that one is used from and explains principle of the present invention together with it.
Fig. 1 is the schematic block diagram of an example of the Set Top Box of prior art.
Fig. 2 is the schematic block diagram of an example according to Set Top Box of the present invention.
Embodiment
Various exemplary embodiment of the present invention is described in detail now with reference to accompanying drawing.It should be noted that: unless specifically stated otherwise, otherwise positioned opposite, the numerical expression of the parts of setting forth in these embodiments and step and numerical value do not limit the scope of the invention.
Illustrative to the description only actually of at least one exemplary embodiment below, never as any restriction to the present invention and application or use.
May not discuss in detail for the known technology of person of ordinary skill in the relevant, method and apparatus, but in the appropriate case, described technology, method and apparatus should be regarded as a part for specification.
In all examples with discussing shown here, any occurrence should be construed as merely exemplary, instead of as restriction.Therefore, other example of exemplary embodiment can have different values.
It should be noted that: represent similar terms in similar label and letter accompanying drawing below, therefore, once be defined in an a certain Xiang Yi accompanying drawing, then do not need to be further discussed it in accompanying drawing subsequently.
Fig. 2 shows the schematic block diagram of an example according to Set Top Box of the present invention.
As shown in Figure 2, Set Top Box 1002 comprises system software module 2002, digital television application module 2003, CAS module 2004a, 2004b.Digital television application module 2003 is run by system software module 2002.
In addition, system software module 2002 also comprises library module 2008, the storehouse for storing, needed for management system operation.Driver module 2005, interface module 2006, descrambling module 2009, filtering module 2010 etc. can also be comprised in Set Top Box 2001.Driver module 2005 is for each interface of driving machine top box.Interface module 2006 is such as accepting CAS smart card 2007.These modules are all well known in the prior art, therefore, are here not described in detail.
It will be appreciated by those skilled in the art that, above-mentioned module can be realized by various mode.Such as, digital television application module, CAS module etc. can be realized by instruction configuration processor.Such as, instruction can be stored in ROM, and when starting the device, instruction be read programming device from ROM and realizes digital television application module, CAS module etc.Such as, digital television application module, CAS module etc. can be cured in dedicated devices (such as ASIC).Digital television application module, CAS module separate unit can be divided into, or they realization can be combined.Above-mentioned module can be realized by the one in above-mentioned various implementation, or can be realized by the combination of two or more modes in above-mentioned various implementation.
In Set Top Box according to the present invention, at least one CAS module can be set, such as, CAS module 2004a, 2004b.Described at least one CAS module need not compile and be linked at one with system software module 2002 and digital television application module 2003 and video.Such as, at least one CAS module described is loaded in transient memory.When needed, described at least one CAS module 2004a, 2004b can be called by digital television application module 2003, for broadcasting Digital Television.
Because CAS module and system software module 2002 and digital television application module 2003 are what to be separated, therefore, there is disabled user and CAS module is changed, with the risk of fraud system software module 2002 or digital television application module 2003.Therefore, in order to prevent this deception, the hashed value of CAS module can be utilized verify, to determine whether to run CAS module.
Such as, described digital television application module 2003 can be configured to the hashed value at least partially calculating CAS module.According to the present invention, the hashed value of whole CAS module can be calculated, also only can calculate the hashed value of its part (such as key component).Described digital television application module 2003 verifies CAS module by described hashed value, to determine whether to run this CAS module.
In one example in which, described digital television application module 2003 can be configured to the hashed value at least partially prestoring described CAS module.Such as, described hashed value sends to Set Top Box 2001 by network, or by memory transfer such as USB flash disks to Set Top Box 2001.Described digital television application module 2003 verifies CAS module based on stored hashed value and the hashed value calculated.Such as, stored hashed value and the hashed value calculated compare by described digital television application module 2003.If the two is consistent, then allow to run this CAS module; Otherwise, do not allow to run this CAS module.
In another example, described digital television application module 2003 can send to authentication server the hashed value calculated, for checking.In the present case, if described digital television application module 2003 directly sends described hashed value, may there is the risk intercepted by disabled user, therefore, described hashed value can be sent out with the first cipher mode.Such as, described first cipher mode comprises at least one in symmetric cryptography mode and asymmetric encryption mode.
Further, for preventing disabled user from directly intercepting the hashed value after encryption, personation validated user, in described first cipher mode, can use stirring factor pair key to stir.The described stirring factor is such as at least one in time, coordinate, the network address.In this way, due to for same content, ciphertext can change according to different factors (time, coordinate, the network address etc.), therefore, adds the difficulty that disabled user carries out palming off.
In Set Top Box, described CAS module is configured to communicate with CAS smart card, to determine whether to run access Digital Television.But as a rule, the interface of CAS smart card and Set Top Box is the ISO7816 interface of standard.Therefore, disabled user intercepts the communication between CAS module and CAS smart card easily via the described interface of monitoring, thus cheats.In order to prevent this situation, the second cipher mode can be used to be encrypted (such as, relevant to the mandate of the access part) at least partially in described communication.
Further, in order to further increase the difficulty that disabled user carries out cracking and cheating, such as, described second cipher mode also can comprise using and stirs factor pair key and stir.The described stirring factor is at least one in time, coordinate, the network address.
The form of expression of the present invention can comprise system, method and/or computer program.Computer program can comprise computer-readable recording medium, containing the computer-readable program instructions for making processor realize various aspects of the present invention.
Computer-readable recording medium can be the tangible device that can keep and store the instruction used by instruction actuating equipment.Computer-readable recording medium can be such as the combination of--but being not limited to--storage device electric, magnetic storage apparatus, light storage device, electromagnetism memory device, semiconductor memory apparatus or above-mentioned any appropriate.The example more specifically (non exhaustive list) of computer-readable recording medium comprises: portable computer diskette, hard disk, random access memory (RAM), read-only memory (ROM), erasable type programmable read only memory (EPROM or flash memory), static RAM (SRAM), Portable compressed dish read-only memory (CD-ROM), digital versatile disc (DVD), memory stick, floppy disk, mechanical coding equipment, such as it stores punch card or the groove internal projection structure of instruction, and the combination of above-mentioned any appropriate.Here used computer-readable recording medium is not interpreted as instantaneous signal itself, the electromagnetic wave of such as radio wave or other Free propagations, the electromagnetic wave (such as, by the light pulse of fiber optic cables) propagated by waveguide or other transmission mediums or the signal of telecommunication by wire transfer.
Computer-readable program instructions as described herein can download to each calculating/treatment facility from computer-readable recording medium, or downloads to outer computer or External memory equipment by network, such as internet, local area network (LAN), wide area network and/or wireless network.Network can comprise copper transmission cable, Optical Fiber Transmission, wireless transmission, router, fire compartment wall, switch, gateway computer and/or Edge Server.Adapter in each calculating/treatment facility or network interface from network reception computer-readable program instructions, and forward this computer-readable program instructions, in the computer-readable recording medium be stored in each calculating/treatment facility.
The source code that the computer program instructions of the present invention's operation can be assembly instruction for performing, instruction set architecture (ISA) instruction, machine instruction, machine-dependent instructions, microcode, firmware instructions, condition setup data or the combination in any with one or more programming languages are write or object code, described programming language comprises OO programming language-such as Smalltalk, C++ etc., and the procedural programming languages of routine-such as " C " language or similar programming language.Computer-readable program instructions can fully perform on the user computer, partly perform on the user computer, as one, independently software kit performs, partly part performs on the remote computer or performs on remote computer or server completely on the user computer.In the situation relating to remote computer, remote computer can by the network of any kind-comprise local area network (LAN) (LAN) or wide area network (WAN)-be connected to subscriber computer, or, outer computer (such as utilizing ISP to pass through Internet connection) can be connected to.In certain embodiments, personalized customization electronic circuit is carried out by utilizing the state information of computer-readable program instructions, such as Programmable Logic Device, field programmable gate array (FPGA) or programmable logic array (PLA), this electronic circuit can perform computer-readable program instructions, thus realizes various aspects of the present invention.
Here with reference to describing various aspects of the present invention according to the block diagram of the device of the embodiment of the present invention.Should be appreciated that the combination of each square frame in each square frame of block diagram and block diagram, can be realized by computer-readable program instructions.
These computer-readable program instructions can be supplied to the processor of all-purpose computer, special-purpose computer or other programmable data processing unit, thus produce a kind of machine, make these instructions when the processor by computer or other programmable data processing unit performs, create the device of the function/action specified in the one or more square frames realized in block diagram.Also these computer-readable program instructions can be stored in a computer-readable storage medium, these instructions make computer, programmable data processing unit and/or other equipment work in a specific way, thus, the computer-readable medium storing instruction then comprises a manufacture, and it comprises the instruction of the various aspects of the function/action specified in the one or more square frames in realization flow figure and/or block diagram.
Also can computer-readable program instructions be loaded on computer, other programmable data processing unit or miscellaneous equipment, make to perform sequence of operations step on computer, other programmable data processing unit or miscellaneous equipment, to produce computer implemented process, thus make function/action of specifying in the one or more square frames in the instruction realization flow figure that performs on computer, other programmable data processing unit or miscellaneous equipment and/or block diagram.
Block diagram in accompanying drawing shows the architectural framework in the cards of the product according to multiple embodiment of the present invention, function and operation.In this, each square frame in block diagram can represent a part for a module, program segment or instruction, and a part for described module, program segment or instruction comprises one or more executable instruction for realizing the logic function specified.At some as in the realization of replacing, the function marked in square frame also can be different from occurring in sequence of marking in accompanying drawing.Such as, in fact two continuous print square frames can perform substantially concurrently, and they also can perform by contrary order sometimes, and this determines according to involved function.Also it should be noted that the combination of each square frame in block diagram and the square frame in block diagram, can realize by the special hardware based system of the function put rules into practice or action, or can realize with the combination of specialized hardware and computer instruction.Be well known that to those skilled in the art, realize by hardware mode, realized by software mode and realize being all of equal value by the mode that software and hardware combines.
Be described above various embodiments of the present invention, above-mentioned explanation is exemplary, and non-exclusive, and be also not limited to disclosed each embodiment.When not departing from the scope and spirit of illustrated each embodiment, many modifications and changes are all apparent for those skilled in the art.The selection of term used herein, is intended to explain best the principle of each embodiment, practical application or the technological improvement to the technology in market, or makes other those of ordinary skill of the art can understand each embodiment disclosed herein.Scope of the present invention is limited by claims.
Claims (12)
1. a Set Top Box, comprising:
System software module;
Digital television application module; And
At least one CAS module,
Wherein, digital television application module is run by system software module, and digital television application module calls at least one CAS module described, for broadcasting Digital Television.
2. Set Top Box according to claim 1, wherein, at least one CAS module described is loaded in transient memory.
3. Set Top Box according to claim 1, wherein, described digital television application module is configured to the hashed value at least partially calculating CAS module, and verifies CAS module by described hashed value, to determine whether to run this CAS module.
4. Set Top Box according to claim 3, wherein, described digital television application module is configured to the hashed value at least partially prestoring described CAS module, and verifies CAS module based on stored hashed value and the hashed value calculated.
5. Set Top Box according to claim 3, wherein, described digital television application module sends the hashed value calculated to authentication server, for checking.
6. Set Top Box according to claim 5, wherein, described hashed value is sent out with the first cipher mode.
7. Set Top Box according to claim 5, wherein, described first cipher mode comprises at least one in symmetric cryptography mode and asymmetric encryption mode.
8. Set Top Box according to claim 5, wherein, described first cipher mode comprises use stirring factor pair key and stirs.
9. Set Top Box according to claim 8, wherein, the described stirring factor is at least one in time, coordinate, the network address.
10. Set Top Box according to claim 1, wherein, described CAS module is configured to communicate with CAS smart card, wherein, uses the second cipher mode to being encrypted at least partially in described communication.
11. Set Top Box according to claim 10, wherein, described second cipher mode comprises use stirring factor pair key and stirs.
12. Set Top Box according to claim 11, wherein, the described stirring factor is at least one in time, coordinate, the network address.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510596018.7A CN105282590B (en) | 2015-09-17 | 2015-09-17 | Set-top box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510596018.7A CN105282590B (en) | 2015-09-17 | 2015-09-17 | Set-top box |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105282590A true CN105282590A (en) | 2016-01-27 |
| CN105282590B CN105282590B (en) | 2018-10-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510596018.7A Active CN105282590B (en) | 2015-09-17 | 2015-09-17 | Set-top box |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20070186237A1 (en) * | 2004-01-27 | 2007-08-09 | Masahiro Takatori | Television receiver and digital broadcast system |
| CN101247500A (en) * | 2007-02-12 | 2008-08-20 | 深圳市隆泰数字技术有限公司 | General software descrambling method for different scrambling systems of digital television |
| CN101562724A (en) * | 2009-05-21 | 2009-10-21 | 山东泰信电子有限公司 | Method for realizing switching between two CA systems on set-top box |
| CN201341169Y (en) * | 2009-01-08 | 2009-11-04 | 沈逸林 | Multifunctional media phone terminal |
| CN101859351A (en) * | 2009-04-08 | 2010-10-13 | 北京芯技佳易微电子科技有限公司 | System and method for ensuring safe read of data stored in storage |
| CN101895670A (en) * | 2010-07-20 | 2010-11-24 | 深圳市茁壮网络股份有限公司 | Universal digital television middleware system |
| CN103354998A (en) * | 2010-12-01 | 2013-10-16 | 耶德托公司 | Control word protection |
| CN103888797A (en) * | 2014-03-10 | 2014-06-25 | 北京四达时代软件技术股份有限公司 | System and set top box achieving digital television service based on Android system |
-
2015
- 2015-09-17 CN CN201510596018.7A patent/CN105282590B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070186237A1 (en) * | 2004-01-27 | 2007-08-09 | Masahiro Takatori | Television receiver and digital broadcast system |
| CN101247500A (en) * | 2007-02-12 | 2008-08-20 | 深圳市隆泰数字技术有限公司 | General software descrambling method for different scrambling systems of digital television |
| CN201341169Y (en) * | 2009-01-08 | 2009-11-04 | 沈逸林 | Multifunctional media phone terminal |
| CN101859351A (en) * | 2009-04-08 | 2010-10-13 | 北京芯技佳易微电子科技有限公司 | System and method for ensuring safe read of data stored in storage |
| CN101562724A (en) * | 2009-05-21 | 2009-10-21 | 山东泰信电子有限公司 | Method for realizing switching between two CA systems on set-top box |
| CN101895670A (en) * | 2010-07-20 | 2010-11-24 | 深圳市茁壮网络股份有限公司 | Universal digital television middleware system |
| CN103354998A (en) * | 2010-12-01 | 2013-10-16 | 耶德托公司 | Control word protection |
| CN103888797A (en) * | 2014-03-10 | 2014-06-25 | 北京四达时代软件技术股份有限公司 | System and set top box achieving digital television service based on Android system |
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| Publication number | Publication date |
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| CN105282590B (en) | 2018-10-12 |
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Address after: 100866, 2, Fuxing Avenue, Xicheng District, Beijing Patentee after: Planning Institute of Radio and Television of the State Administration of Radio and Television Patentee after: BEIJING TIDYCAST Co.,Ltd. Address before: 100866, 2, Fuxing Avenue, Xicheng District, Beijing Patentee before: RADIO AND TELEVISION PLANNING INSTITUTE, STATE ADMINISTRATION OF PRESS, PUBLICATION, RADIO, FILM AND TELEVISION Patentee before: BEIJING TIDYCAST Co.,Ltd. |