CN104540013B - A kind of playback terminal obtains the method and playback terminal of programme content - Google Patents
A kind of playback terminal obtains the method and playback terminal of programme content Download PDFInfo
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- CN104540013B CN104540013B CN201410764617.0A CN201410764617A CN104540013B CN 104540013 B CN104540013 B CN 104540013B CN 201410764617 A CN201410764617 A CN 201410764617A CN 104540013 B CN104540013 B CN 104540013B
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- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000001514 detection method Methods 0.000 claims abstract description 15
- 238000010586 diagram Methods 0.000 description 8
- 238000013475 authorization Methods 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 4
- 230000010287 polarization Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000004590 computer program Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
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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
- H04N21/43—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
- H04N21/438—Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving encoded video stream packets from an IP network
-
- 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
- H04N21/4181—External card to be used in combination with the client device, e.g. for conditional access for conditional access
-
- 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
- H04N21/435—Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream
-
- 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
- H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
- H04N21/462—Content or additional data management, e.g. creating a master electronic program guide from data received from the Internet and a Head-end, controlling the complexity of a video stream by scaling the resolution or bit-rate based on the client capabilities
- H04N21/4622—Retrieving content or additional data from different sources, e.g. from a broadcast channel and the Internet
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Databases & Information Systems (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The embodiment of the invention discloses methods and playback terminal that a kind of playback terminal obtains programme content, the described method includes: goal condition belonging to detection playback terminal receives system CAS, the target CAS includes preset first PID Packet Identifier PID corresponding with objective network information table NIT, and describes corresponding 2nd PID of table SDT with target service；Search for the first the PID corresponding target NIT and the corresponding target SDT of the 2nd PID；The target NIT and the target SDT are parsed, target the rendition list is generated.The embodiment of the present invention can simple and direct, efficiently realize that different types of set-top box adaptively receives different programme contents.
Description
Technical field
The present invention relates to digital TV technologies, and in particular to a kind of playback terminal obtains the method for programme content and broadcasts
Put terminal.
Background technique
In satellite digital TV network, the front end of same satellite digital TV operator generally has more set conditions and connects
Receive (Conditional Access, CA) system, different CA correspond to different types of set-top box (Set Top Box,
STB).Such as there are two sets of CA systems in the front end satellite digital TV operator X, is CA_01 and CA_02 respectively, CA_01 and CA_02
Two distinct types of set-top box STB_01 and STB_02 is respectively corresponded, the received program of the set-top box of both types is different.
For example, in program present on STB_01, it is not present on STB_02 or the same program, the section shown on STB_01
Mesh title and the programm name shown on STB_02 are variant etc., just need to provide a solution at this time and make difference
The set-top box of type can be properly received corresponding the rendition list and normally show.
Existing solution mainly passes through the mistake of BAT bouquet association table (Bouquet Association Table, BAT)
Filter system carries out, and different CA is correspondingly arranged different service group mark Bouquet_id, for example, certain class set-top box tuning
When corresponding Bouquet_id obtained according to its corresponding CA, then by the corresponding the rendition list of the Bouquet_id to the machine
All programs that top box searches are filtered, and then filter out the rendition list that the set-top box can normally receive.However
In the program, first is that joined BAT receives strobe utility, it is biggish to occupy system resource；Second is that in the case where CA is more,
It needs multiple Bouquet_id to be corresponded to, it is very slow to will lead to BAT reception filtering at this time, so that the tuning for influencing set-top box is fast
Degree.
Summary of the invention
The embodiment of the invention provides a kind of playback terminal obtain programme content method and playback terminal, can it is simple and direct,
Efficiently realize that different types of set-top box adaptively receives different programme contents.
A kind of method that playback terminal obtains programme content, comprising:
It detects goal condition belonging to playback terminal and receives system CAS, the target CAS includes preset and target network
The corresponding first PID Packet Identifier PID of information table NIT, and corresponding 2nd PID of table SDT is described with target service；
Search for the first the PID corresponding target NIT and the corresponding target SDT of the 2nd PID；
The target NIT and the target SDT are parsed, target the rendition list is generated.
A kind of playback terminal, comprising:
Detection unit receives system CAS for detecting goal condition belonging to playback terminal, and the target CAS includes pre-
If first PID Packet Identifier PID corresponding with objective network information table NIT, and table SDT corresponding is described with target service
Two PID；
Search unit, for searching for the corresponding target NIT of the first PID and the corresponding institute of the 2nd PID
State target SDT；
Execution unit generates target the rendition list for parsing the target NIT and the target SDT.
The embodiment of the present invention detects goal condition belonging to playback terminal and receives system CAS, and target CAS includes preset
First PID Packet Identifier PID corresponding with objective network information table NIT, and table SDT corresponding second is described with target service
PID；Search for the first PID corresponding target NIT and the corresponding target SDT of the 2nd PID；Parse target NIT and
Target SDT generates target the rendition list, can simple and direct, efficiently realize that different types of set-top box adaptively receives difference
Programme content.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is the first embodiment process for the method that a kind of playback terminal provided in an embodiment of the present invention obtains programme content
Schematic diagram；
Fig. 2 is the second embodiment process for the method that a kind of playback terminal provided in an embodiment of the present invention obtains programme content
Schematic diagram；
Fig. 3 is a kind of schematic structural diagram of the first embodiment of playback terminal provided in an embodiment of the present invention；
Fig. 4 is a kind of schematic structural diagram of the second embodiment of playback terminal provided in an embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Playback terminal in the embodiment of the present invention can include: the combination of set-top box, TV, all-in-one machine, TV and set-top box
Deng.
Referring to Fig. 1, for a kind of first reality of the method for playback terminal acquisition programme content provided in an embodiment of the present invention
Apply a flow diagram.The method that playback terminal as described in this embodiment obtains programme content, comprising the following steps:
Goal condition belonging to S101, detection playback terminal receives system CAS, and the target CAS includes preset and mesh
It marks the corresponding first PID Packet Identifier PID of network information table NIT, and describes corresponding 2nd PID of table SDT with target service.
Wherein, network information table (Network Information Table, NIT) is mainly used for searching for the set of frequency point,
Information in relation to physical network is provided.NIT is responsible for transmitting some information of present networks and other networks related with present networks,
Each network has unique identifier network_id.NIT is mainly carried: network identifier Network_ID, network name,
Transmission system parameters (frequency point, modulation system, FEC outer code, FEC Internal Code, symbol rate, polarization mode etc.), program service type and
The information such as task identifier Service_ID.
SDT Service Description Table (Service Description Table, SDT) is mainly that the programm name under current frequency point is retouched
The set stated, each frequency point correspond to a SDT, and SDT has the detailed description of the programm name for each program, same section
The different digital-TV operator of mesh content input source can be named as different programm names, for example 1, center can be named
CCTV1 or CCTV-1 or one, center or a central channel etc..
It should be noted that NIT and SDT have corresponding PID Packet Identifier (Packet Identifier, PID), the two
The value of PID can be value as defined in DVB standard, be also possible to the value of digital-TV operator setting.In DVB standard, the two PID
Value be fixed, the pid value of NIT is 0x0010, and the pid value of SDT is 0x0011.
Particularly, in the embodiment of the present invention, digital-TV operator can be in condition receiving system (Conditional
Access System, CAS) front end increase one or more groups of NIT and SDT, while the pid value of increased NIT and SDT can be by
The customized setting of digital-TV operator.For example, digital-TV operator A increases by one group of NIT and SDT number in the front end CAS again
According to temporary designations are Ghost NIT and Ghost SDT, while the pid value that corresponding pid value is Ghost NIT is arranged and is
The pid value of 0x0030, Ghost SDT are 0x0020.
It is understood that the pid value of Ghost NIT and Ghost SDT can also be arranged to by digital-TV operator A
Others, the embodiment of the present invention are not construed as limiting.
In the specific implementation, same satellite digital TV operator, front end generally has in satellite digital TV network
More set CAS, different CAS correspond to different playback terminals.Playback terminal first has to judge belonging to it before searching programs
Target CAS, above-mentioned target CAS includes preset first PID corresponding with target NIT, and corresponding with target SDT second
PID, to judge that it can received programme content according to above-mentioned first PID and the 2nd PID.
S102, the search corresponding target NIT of the first PID and the corresponding target of the 2nd PID
SDT。
In the specific implementation, playback terminal is after actuation, searched for therewith according to the first PID that above-mentioned target CAS includes first
Then corresponding target NIT searches for corresponding target SDT further according to the 2nd PID that above-mentioned target CAS includes.
S103, the parsing target NIT and target SDT, generate target the rendition list.
In the specific implementation, extracting it after playback terminal searches above-mentioned target NIT and target SDT in step s 102
In include target programme information and relevant parameter, and according to the target programme information and relevant parameter of extraction, according to setting
Promgramming rule works out target the rendition list.
It should be noted that above-mentioned Promgramming rule can be the Promgramming that digital-TV operator provides or defaults
Rule, is also possible to the Promgramming rule that user independently sets according to actual needs, and the embodiment of the present invention is not construed as limiting.
By taking playback terminal is set-top box STB as an example, digital-TV operator A run two sets CAS, respectively CAS_01 with
CAS_02, CAS_01 and CAS_02 respectively correspond two distinct types of set-top box STB_01 and set-top box STB_02, STB_01
It can be understood as the set-top box of traditional type, STB_02 can be understood as the set-top box product of a new generation.Wherein, CAS_01 is used
The pid value of the PID of the PID and SDT of NIT as defined in DVB standard, NIT are 0x0010, and the pid value of SDT is 0x0011；CAS_02
Using one group of NIT and SDT that digital-TV operator A is newly increased in front end, temporary designations are Ghost NIT and Ghost
SDT, while the pid value that Ghost NIT is arranged is 0x0030, the pid value of Ghost SDT is 0x0020.
Wherein, STB_01 and STB_02 detects the CAS belonging to itself in searching programs content first, i.e. STB_01 belongs to
Belong to CAS_02 in CAS_01, STB_02, the pid value pair that set-top box STB is only received after detection and the CAS belonging to it includes
The NIT and SDT answered, i.e. STB_01 receive pid value corresponding NIT and SDT as defined in DVB standard, and STB_02 is received by number
The corresponding Ghost NIT of the pid value of the customized setting of television operator A and Ghost SDT, STB_01 and STB_02 pass through parsing
Different NIT and SDT obtain different programme contents, mutually indepedent between STB_01 and STB_02, do not occupy and additional are
Unite resource and each STB tuning speed it is consistent with each other, substantially increase tuning efficiency.
The embodiment of the present invention detects goal condition belonging to playback terminal and receives system CAS, and target CAS includes preset
First PID Packet Identifier PID corresponding with objective network information table NIT, and table SDT corresponding second is described with target service
PID；Search for the first PID corresponding target NIT and the corresponding target SDT of the 2nd PID；Parse target NIT and
Target SDT generates target the rendition list, can simple and direct, efficiently realize that different types of set-top box adaptively receives difference
Programme content.
Referring to Fig. 2, for a kind of second reality of the method for playback terminal acquisition programme content provided in an embodiment of the present invention
Apply a flow diagram.The method that playback terminal as described in this embodiment obtains programme content, comprising the following steps:
S201, the smartcard types configured on playback terminal are read.
Wherein, above-mentioned smart card (also known as IC card, smart card, smart card etc.) is equivalent to a number in digital television application
" key " of word scrambled TV service.For digital cable customers after paying corresponding expense, CAS can send program authorization letter to playback terminal
Breath, authorization, payment information are stored in smart card, and after playback terminal reads the authorization message on smart card, user is just
It can watch the digital television program oneself ordered.For in terms of certain, smart card is equivalent to the receipts for watching DTV
Fei Ka.
In the specific implementation, reading the concrete type of smart card first after playback terminal starting, i.e. the smart card can receive
The authorization message of the CAS such as which programme content.
S202, according to the smartcard types, judge that goal condition belonging to the playback terminal receives system CAS, institute
Stating target CAS includes preset first PID Packet Identifier PID corresponding with objective network information table NIT, and is retouched with target service
State corresponding 2nd PID of table SDT.
In the specific implementation, playback terminal is after reading out the concrete type of smart card, it can be according to the concrete type of smart card
Judge which CAS itself belonged to.
It is understood that different CAS includes the PID of corresponding NIT and SDT.
S203, from the smart card configured on the playback terminal, obtain the target CAS includes described first
The value of the value of PID and the 2nd PID.
In the specific implementation, further being obtained above-mentioned after playback terminal knows affiliated target CAS by the smart card configured
The value for the first PID that target CAS includes and the value of the 2nd PID.
S204, the search corresponding target NIT of the first PID and the corresponding target of the 2nd PID
SDT。
In the specific implementation, playback terminal searches for corresponding mesh according to the first PID obtained in step S203 first
NIT is marked, then searches for corresponding target SDT further according to the 2nd PID obtained in step S203.
S205, the parsing target NIT, obtain the corresponding frequency point distributed intelligence of target program.
Wherein, network information table (Network Information Table, NIT) is mainly used for searching for the set of frequency point,
Information in relation to physical network is provided.NIT is responsible for transmitting some information of present networks and other networks related with present networks,
Each network has unique identifier network_id.NIT is mainly carried: network identifier Network_ID, network name,
Transmission system parameters (frequency point, modulation system, FEC outer code, FEC Internal Code, symbol rate, polarization mode etc.), program service type and
The information such as task identifier Service_ID.
Specifically, playback terminal obtains its corresponding frequency point point of received target program of energy by parsing above-mentioned target NIT
Cloth information.
S206, the parsing target SDT, obtain the corresponding program description of the target program.
Wherein, SDT Service Description Table (Service Description Table, SDT) is mainly the program under current frequency point
The set of title description, each frequency point correspond to a SDT, and SDT has the detailed description of the programm name for each program,
The different digital-TV operator of same programme content input source can be named as different programm names, for example 1, center can
To cry CCTV1 or CCTV-1 or one, center or a central channel etc..
Specifically, playback terminal obtains its corresponding program of received target program of energy and retouches by parsing above-mentioned target SDT
State information.
S207, according to the corresponding frequency point distributed intelligence of the target program and program description, generate target program column
Table.
In the specific implementation, playback terminal is decoded it and is received by the corresponding frequency point distributed intelligence of analysis target program
Target program.Further, playback terminal is obtained received by the corresponding program description of analysis target program
The information such as the programm name of target program, and by information such as above-mentioned target program and programm names, according to the Promgramming of setting
Rule establishment target the rendition list.
It should be noted that above-mentioned Promgramming rule can be the Promgramming that digital-TV operator provides or defaults
Rule, is also possible to the Promgramming rule that user independently sets according to actual needs, and the embodiment of the present invention is not construed as limiting.
The embodiment of the present invention reads the smartcard types configured on playback terminal, and according to the type of the smart card, judgement should
Goal condition belonging to playback terminal receives system CAS, and target CAS includes preset corresponding with objective network information table NIT
The first PID Packet Identifier PID, and corresponding 2nd PID of table SDT is described with target service, and configure from the playback terminal
In the smart card, the value for the first PID that target CAS includes and the value of the 2nd PID are obtained；It is corresponding to search for the first PID
Target NIT and the corresponding target SDT of the 2nd PID；In turn, target NIT is parsed, the corresponding frequency of target program is obtained
Point distributed intelligence, parses target SDT, obtains the corresponding program description of target program, finally according to the target program
Corresponding frequency point distributed intelligence and program description, generate target the rendition list, can it is simple and direct, efficiently realize different type
Set-top box adaptively receive different programme contents.
Referring to Fig. 3, being a kind of schematic structural diagram of the first embodiment of playback terminal provided in an embodiment of the present invention.This reality
Apply playback terminal described in example, comprising: detection unit 10, search unit 20 and execution unit 30, in which:
Detection unit 10 receives system CAS for detecting goal condition belonging to playback terminal, and the target CAS includes
Preset first PID Packet Identifier PID corresponding with objective network information table NIT, and with target service to describe table SDT corresponding
2nd PID.
Wherein, network information table (Network Information Table, NIT) is mainly used for searching for the set of frequency point,
Information in relation to physical network is provided.NIT is responsible for transmitting some information of present networks and other networks related with present networks,
Each network has unique identifier network_id.NIT is mainly carried: network identifier Network_ID, network name,
Transmission system parameters (frequency point, modulation system, FEC outer code, FEC Internal Code, symbol rate, polarization mode etc.), program service type and
The information such as task identifier Service_ID.
SDT Service Description Table (Service Description Table, SDT) is mainly that the programm name under current frequency point is retouched
The set stated, each frequency point correspond to a SDT, and SDT has the detailed description of the programm name for each program, same section
The different digital-TV operator of mesh content input source can be named as different programm names, for example 1, center can be named
CCTV1 or CCTV-1 or one, center or a central channel etc..
It should be noted that NIT and SDT have corresponding PID Packet Identifier (Packet Identifier, PID), the two
The value of PID can be value as defined in DVB standard, be also possible to the value of digital-TV operator setting.In DVB standard, the two PID
Value be fixed, the pid value of NIT is 0x0010, and the pid value of SDT is 0x0011.
Particularly, in the embodiment of the present invention, digital-TV operator can be in condition receiving system (Conditional
Access System, CAS) front end increase one or more groups of NIT and SDT, while the pid value of increased NIT and SDT can be by
The customized setting of digital-TV operator.For example, digital-TV operator A increases by one group of NIT and SDT number in the front end CAS again
According to temporary designations are Ghost NIT and Ghost SDT, while the pid value that corresponding pid value is Ghost NIT is arranged and is
The pid value of 0x0030, Ghost SDT are 0x0020.
It is understood that the pid value of Ghost NIT and Ghost SDT can also be arranged to by digital-TV operator A
Others, the embodiment of the present invention are not construed as limiting.
In the specific implementation, same satellite digital TV operator, front end generally has in satellite digital TV network
More set CAS, different CAS correspond to different playback terminals.Playback terminal is before searching programs, first by detection unit 10
Judge that the target CAS belonging to it, above-mentioned target CAS include preset first PID corresponding with target NIT, and with target SDT
Corresponding 2nd PID, so that detection unit 10 judges that it can received programme content according to above-mentioned first PID and the 2nd PID.
Search unit 20, it is corresponding for searching for the first PID corresponding target NIT and the 2nd PID
The target SDT.
In the specific implementation, playback terminal is after actuation, include according to above-mentioned target CAS first by search unit 20 first
PID searches for corresponding target NIT, then searches for corresponding target further according to above-mentioned target CAS the 2nd PID for including
SDT。
Execution unit 30 generates target the rendition list for parsing the target NIT and the target SDT.
In the specific implementation, execution unit 30 extracts after search unit 20 searches above-mentioned target NIT and target SDT
Target programme information and relevant parameter wherein included, further according to the target programme information and relevant parameter of extraction, according to setting
Promgramming rule work out target the rendition list.
It should be noted that above-mentioned Promgramming rule can be the Promgramming that digital-TV operator provides or defaults
Rule, is also possible to the Promgramming rule that user independently sets according to actual needs, and the embodiment of the present invention is not construed as limiting.
By taking playback terminal is set-top box STB as an example, digital-TV operator A run two sets CAS, respectively CAS_01 with
CAS_02, CAS_01 and CAS_02 respectively correspond two distinct types of set-top box STB_01 and set-top box STB_02, STB_01
It can be understood as the set-top box of traditional type, STB_02 can be understood as the set-top box product of a new generation.Wherein, CAS_01 is used
The pid value of the PID of the PID and SDT of NIT as defined in DVB standard, NIT are 0x0010, and the pid value of SDT is 0x0011；CAS_02
Using one group of NIT and SDT that digital-TV operator A is newly increased in front end, temporary designations are Ghost NIT and Ghost
SDT, while the pid value that Ghost NIT is arranged is 0x0030, the pid value of Ghost SDT is 0x0020.
Wherein, the search unit 20 of STB_01 and STB_02 is detected by detection unit 10 first in searching programs content
CAS belonging to itself, i.e. STB_01 belong to CAS_01, and STB_02 belongs to CAS_02, the search list of set-top box STB after detection
20, member receive with its belonging to the corresponding NIT and SDT of the CAS pid value that includes, i.e. PID as defined in STB_01 reception DVB standard
It is worth corresponding NIT and SDT, and STB_02 receives the corresponding Ghost of pid value by the customized setting of digital-TV operator A
The execution unit 30 of NIT and Ghost SDT, STB_01 and STB_02 obtain different programs by parsing different NIT and SDT
Content, it is mutually indepedent between STB_01 and STB_02, do not occupy additional system resource and each STB tuning speed that
This is consistent, substantially increases tuning efficiency.
The embodiment of the present invention detects goal condition belonging to playback terminal and receives system CAS, and target CAS includes preset
First PID Packet Identifier PID corresponding with objective network information table NIT, and table SDT corresponding second is described with target service
PID；Search for the first PID corresponding target NIT and the corresponding target SDT of the 2nd PID；Parse target NIT and
Target SDT generates target the rendition list, can simple and direct, efficiently realize that different types of set-top box adaptively receives difference
Programme content.
Referring to Fig. 4, being a kind of schematic structural diagram of the second embodiment of playback terminal provided in an embodiment of the present invention.This reality
Apply playback terminal described in example, comprising: detection unit 10, acquiring unit 40, search unit 20 and execution unit 30.
Wherein, detection unit 10 specifically includes: reading unit 101 and judging unit 102；Execution unit 30 specifically includes:
Resolution unit 301 and processing unit 302.It is specific:
Reading unit 101, for reading the smartcard types configured on playback terminal.
Wherein, above-mentioned smart card (also known as IC card, smart card, smart card etc.) is equivalent to a number in digital television application
" key " of word scrambled TV service.For digital cable customers after paying corresponding expense, CAS can send program authorization letter to playback terminal
Breath, authorization, payment information are stored in smart card, and after playback terminal reads the authorization message on smart card, user is just
It can watch the digital television program oneself ordered.For in terms of certain, smart card is equivalent to the receipts for watching DTV
Fei Ka.
In the specific implementation, reading the concrete type of smart card by reading unit 101 first after playback terminal starting, i.e., should
Smart card can receive the authorization message of the CAS such as which programme content.
Judging unit 102, for judging that goal condition belonging to the playback terminal is received according to the smartcard types
System CAS, the target CAS include preset first PID Packet Identifier PID, Yi Jiyu corresponding with objective network information table NIT
Target service describes corresponding 2nd PID of table SDT.
In the specific implementation, playback terminal, after reading out the concrete type of smart card, judging unit 102 can be according to smart card
Concrete type judge which CAS itself belonged to.
It is understood that different CAS includes the PID of corresponding NIT and SDT.
Acquiring unit 40, for, according to the smartcard types, judging the playback terminal institute in the judging unit
After the goal condition of category receives system CAS, from the smart card configured on the playback terminal, the target is obtained
The value for the first PID that CAS includes and the value of the 2nd PID.
In the specific implementation, after judging unit 102 knows affiliated target CAS by the smart card configured on playback terminal,
The value for the first PID that above-mentioned target CAS includes and the value of the 2nd PID are further obtained by acquiring unit 40.
Search unit 20, it is corresponding for searching for the first PID corresponding target NIT and the 2nd PID
The target SDT.
In the specific implementation, search unit 20 searches for corresponding mesh according to the first PID that acquiring unit 40 obtains first
NIT is marked, then searches for corresponding target SDT further according to the 2nd PID that acquiring unit 40 obtains.
Resolution unit 301 obtains the corresponding frequency point distributed intelligence of target program, and solution for parsing the target NIT
The target SDT is analysed, the corresponding program description of the target program is obtained.
Wherein, network information table (Network Information Table, NIT) is mainly used for searching for the set of frequency point,
Information in relation to physical network is provided.NIT is responsible for transmitting some information of present networks and other networks related with present networks,
Each network has unique identifier network_id.NIT is mainly carried: network identifier Network_ID, network name,
Transmission system parameters (frequency point, modulation system, FEC outer code, FEC Internal Code, symbol rate, polarization mode etc.), program service type and
The information such as task identifier Service_ID.
SDT Service Description Table (Service Description Table, SDT) is mainly that the programm name under current frequency point is retouched
The set stated, each frequency point correspond to a SDT, and SDT has the detailed description of the programm name for each program, same section
The different digital-TV operator of mesh content input source can be named as different programm names, for example 1, center can be named
CCTV1 or CCTV-1 or one, center or a central channel etc..
Specifically, resolution unit 301 obtains its corresponding frequency of received target program of energy by parsing above-mentioned target NIT
Point distributed intelligence, and by parsing above-mentioned target SDT, obtain its corresponding program description of received target program of energy.
Processing unit 302, for generating according to the corresponding frequency point distributed intelligence of the target program and program description
Target the rendition list.
In the specific implementation, processing unit 302 decodes its reception by the corresponding frequency point distributed intelligence of analysis target program
The target program arrived.Further, processing unit 302 is obtained it and is connect by the corresponding program description of analysis target program
The information such as the programm name of the target program received, and by information such as above-mentioned target program and programm names, according to the section of setting
Mesh rules of arrangement works out target the rendition list.
It should be noted that above-mentioned Promgramming rule can be the Promgramming that digital-TV operator provides or defaults
Rule, is also possible to the Promgramming rule that user independently sets according to actual needs, and the embodiment of the present invention is not construed as limiting.
The embodiment of the present invention reads the smartcard types configured on playback terminal, and according to the type of the smart card, judgement should
Goal condition belonging to playback terminal receives system CAS, and target CAS includes preset corresponding with objective network information table NIT
The first PID Packet Identifier PID, and corresponding 2nd PID of table SDT is described with target service, and configure from the playback terminal
In the smart card, the value for the first PID that target CAS includes and the value of the 2nd PID are obtained；It is corresponding to search for the first PID
Target NIT and the corresponding target SDT of the 2nd PID；In turn, target NIT is parsed, the corresponding frequency of target program is obtained
Point distributed intelligence, parses target SDT, obtains the corresponding program description of target program, finally according to the target program
Corresponding frequency point distributed intelligence and program description, generate target the rendition list, can it is simple and direct, efficiently realize different type
Set-top box adaptively receive different programme contents.
Those of ordinary skill in the art will appreciate that realizing all or part of the process in above-described embodiment method, being can be with
Relevant hardware is instructed to complete by computer program, the program can be stored in a computer-readable storage medium
In, the program is when being executed, it may include such as the process of the embodiment of above-mentioned each method.Wherein, the storage medium can be magnetic
Dish, CD, read-only memory (Read-Only Memory, ROM) or random access memory (Random Access
Memory, abbreviation RAM) etc..
Be provided for the embodiments of the invention above a kind of playback terminal obtain programme content method and playback terminal into
It has gone and has been discussed in detail, used herein a specific example illustrates the principle and implementation of the invention, the above implementation
The explanation of example is merely used to help understand method and its core concept of the invention；Meanwhile for the general technology people of this field
Member, according to the thought of the present invention, there will be changes in the specific implementation manner and application range, in conclusion this explanation
Book content should not be construed as limiting the invention.
Claims (6)
1. a kind of method that playback terminal obtains programme content characterized by comprising
It detects goal condition belonging to playback terminal and receives system CAS, the target CAS includes preset and objective network information
The corresponding first PID Packet Identifier PID of table NIT, and the corresponding second PID Packet Identifier PID of table SDT is described with target service；
From the smart card configured on the playback terminal, the first PID Packet Identifier PID that the target CAS includes is obtained
The value of value and the second PID Packet Identifier PID；
Search for the corresponding institute of the first PID Packet Identifier PID corresponding target NIT and the second PID Packet Identifier PID
State target SDT；
The target NIT and the target SDT are parsed, target the rendition list is generated；
Wherein, the value of the first PID Packet Identifier PID and the value of the second PID Packet Identifier PID be value as defined in DVB standard or
The value set by digital-TV operator.
2. the method according to claim 1, wherein goal condition belonging to the detection playback terminal receives system
Unite CAS, comprising:
Read the smartcard types configured on playback terminal；
According to the smartcard types, judge that goal condition belonging to the playback terminal receives system CAS.
3. the method according to claim 1, wherein the parsing target NIT and target SDT, raw
At target the rendition list, comprising:
The target NIT is parsed, the corresponding frequency point distributed intelligence of target program is obtained；
The target SDT is parsed, the corresponding program description of the target program is obtained；
According to the corresponding frequency point distributed intelligence of the target program and program description, target the rendition list is generated.
4. a kind of playback terminal characterized by comprising
Detection unit receives system CAS for detecting goal condition belonging to playback terminal, and the target CAS includes preset
First PID Packet Identifier PID corresponding with objective network information table NIT, and describe table SDT corresponding second with target service and wrap
Identifier PID；
Acquiring unit, include for from the smart card configured on the playback terminal, obtaining the target CAS described first
The value of the value of PID Packet Identifier PID and the second PID Packet Identifier PID；
Search unit, for searching for the corresponding target NIT of the first PID Packet Identifier PID and the second packet mark
Accord with the corresponding target SDT of PID；
Execution unit generates target the rendition list for parsing the target NIT and the target SDT；
Wherein, the value of the first PID Packet Identifier PID and the value of the second PID Packet Identifier PID be value as defined in DVB standard or
The value set by digital-TV operator.
5. playback terminal according to claim 4, which is characterized in that the detection unit includes:
Reading unit, for reading the smartcard types configured on playback terminal；
Judging unit, for judging that goal condition belonging to the playback terminal receives system according to the smartcard types
CAS。
6. playback terminal according to claim 4, which is characterized in that the execution unit includes:
Resolution unit obtains the corresponding frequency point distributed intelligence of target program, and described in parsing for parsing the target NIT
Target SDT obtains the corresponding program description of the target program；
Processing unit, for generating target section according to the corresponding frequency point distributed intelligence of the target program and program description
Mesh list.
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| CN104954841B (en) * | 2015-06-17 | 2019-10-18 | 上海玮舟微电子科技有限公司 | The method of compatible a variety of conditional access and the video playback apparatus being applicable in |
| CN108513164B (en) * | 2018-02-06 | 2022-04-26 | 海信视像科技股份有限公司 | Program searching method and device |
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