CN104320697B - A kind of DTV channel search method and digital TV terminal - Google Patents
A kind of DTV channel search method and digital TV terminal Download PDFInfo
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- CN104320697B CN104320697B CN201410529677.4A CN201410529677A CN104320697B CN 104320697 B CN104320697 B CN 104320697B CN 201410529677 A CN201410529677 A CN 201410529677A CN 104320697 B CN104320697 B CN 104320697B
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Classifications
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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
- H04N21/43—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
- H04N21/4383—Accessing a communication channel
-
- 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
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The embodiment of the invention discloses a kind of DTV channel search method and digital TV terminal, wherein method includes：The each frequency point for carrying network information table NIT of traversal；The programm name for storing the first frequency point in the frequency point for carrying NIT, wherein first frequency point is the frequency point for belonging to the network operator to prestore；Search for the programm name of the second frequency point in the frequency point for carrying NIT, by what is in the programm name of second frequency point be consistent with default programm name store, wherein described second frequency point is the frequency point for not belonging to the network operator to prestore, and the default programm name is the title of the clear stream program of other frequency points in addition to current frequency point in the frequency point for carrying NIT；It is presented to the user the programm name of storage as tuning result.Implement the embodiment of the present invention, it can be ensured that the program that user searches can normal play, improve the practicability of tuning and user avoided to be mistakenly considered fault of digital television terminal.
Description
Technical field
The present invention relates to digital TV technology more particularly to a kind of DTV channel search method and DTV are whole
End.
Background technology
For DTV, the set-top box for converting digital signals into analog signal output is essential
's.When set-top box tuning, the program searched includes scrambled program and clear stream program, wherein scrambling refers to pseudo-random sequence pair
Multiplexed program transport streams are controlled into line disturbance, and scrambled program is needed could normal play by descrambling；And clear stream program is then
Refer to the program not being scrambled, set-top box can be played directly after searching clear stream program without descrambling.
The scrambling mode of program is varied at present, and different network operators in different ways add program
It disturbs, but set-top box is typically only capable to descrambling by the scrambled program of partner network operator.When general set-top box tuning, it can will search
Rope to program all user is showed to select, but some of non-cooperative network operator carry out scrambled scrambled program without
Method normal play.In this case, the practicability of set-top box tuning is not high, and may lead to that user is made to be misinterpreted as set-top box hair
Failure is given birth to, to influence the sales situation of set-top box.
Invention content
The embodiment of the present invention provides a kind of DTV channel search method and a kind of digital TV terminal, can increase and may be viewed by saving
Purpose quantity simultaneously ensures that the program that tuning searches all may be viewed by, and enhances the practicability of tuning.
First aspect present invention provides a kind of DTV channel search method, it may include：
The each frequency point for carrying network information table NIT of traversal；
The programm name of the first frequency point in the frequency point for carrying NIT is stored, wherein first frequency point is pre- to belong to
The frequency point of the network operator deposited；
The programm name for searching for the second frequency point in the frequency point for carrying NIT, will be in the programm name of second frequency point
What is be consistent with default programm name store, wherein second frequency point is the frequency for not belonging to the network operator to prestore
Point, the default programm name are the title of the clear stream program of other frequency points in addition to current frequency point in the frequency point for carrying NIT；
It is presented to the user the programm name of storage as tuning result.
In a kind of feasible embodiment, each frequency point for carrying network information table NIT of traversal, including：
The frequency point for carrying network information table NIT is obtained successively, is often obtained and is judged after the frequency point of a carrying NIT to get
Whether the original network identification of frequency point is consistent with the network identity of the network operator to prestore；
If being judged as YES, the frequency point got described in judgement belongs to the network operator to prestore；
If being judged as NO, the frequency point got described in judgement does not belong to the network operator to prestore.
In a kind of feasible embodiment, before each frequency point for carrying network information table NIT of traversal, the side
Method further includes：
The sdt_other tables in SDT Service Description Table SDT are parsed, and obtain the default section from the sdt_other tables
Mesh title.
In a kind of feasible embodiment, the sdt_other tables include at least one sublist, each sublist packet
Include the title of the clear stream program of second frequency point in the frequency point for carrying NIT.
In a kind of feasible embodiment, the sublist is that the network operator to prestore generates.
Second aspect of the embodiment of the present invention provides a kind of digital TV terminal, it may include：
Traversal Unit, the frequency point for traversing each carrying network information table NIT；
First storage unit, the programm name for storing the first frequency point in the frequency point for carrying NIT, wherein described the
One frequency point is the frequency point for belonging to the network operator to prestore；
Second storage unit, the programm name for searching for the second frequency point in the frequency point for carrying NIT, by described second
What is be consistent with default programm name in the programm name of frequency point store, wherein second frequency point is not belonged to and prestored
The frequency point of network operator, the default programm name be it is described carry NIT frequency point in addition to current frequency point other frequency points
The title of clear stream program；
Display unit, for being presented to the user the programm name of storage as tuning result.
In a kind of feasible embodiment, the Traversal Unit includes：
Acquiring unit, for obtaining the frequency point for carrying network information table NIT successively；
Judging unit, the primitive network mark for judging the frequency point got after every frequency point for obtaining a carrying NIT
Whether knowledge is consistent with the network identity of the network operator to prestore；
First judging unit, for when the judging unit is judged as YES, the frequency point got described in judgement to belong to
The network operator to prestore；
Second judging unit, when the judging unit is judged as NO, the frequency point got described in judgement does not belong to institute
State the network operator to prestore.
In a kind of feasible embodiment, the digital TV terminal further includes：
Resolution unit for parsing the sdt_other tables in SDT Service Description Table SDT, and is obtained from the sdt_other tables
Take the default programm name.
In a kind of feasible embodiment, the sdt_other tables include at least one sublist, each sublist packet
Include the title of the clear stream program of second frequency point in the frequency point for carrying NIT.
In a kind of feasible embodiment, the sublist is that the network operator to prestore generates.
In the embodiment of the present invention, all programm names for including by the frequency point for belonging to the network operator to prestore and not
The clear stream programm name that the frequency point for belonging to the network operator to prestore includes all preserves, and use is presented to as tuning result
Family makes user that can not only watch the program of the network operator to prestore, can also watch the clear stream program of other operators, increase
The quantity of program is may be viewed by, in addition, the program that user searches all may be viewed by, the practicability of tuning is stronger, also avoids
Cause user to take for digital TV terminal when searching out the program that can not be descrambled to break down, to ensure digital TV terminal
Sales achievement is unaffected.
Description of the drawings
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 some embodiments of the invention, for ability
For the those of ordinary skill of domain, without having to pay creative labor, others are can also be obtained according to these attached drawings
Attached drawing.
Fig. 1 is the flow diagram of an embodiment of DTV channel search method provided by the invention；
Fig. 2 is the flow diagram of another embodiment of DTV channel search method provided by the invention；
Fig. 3 is the structural schematic diagram of an embodiment of digital TV terminal provided by the invention；
Fig. 4 is the structural schematic diagram of another embodiment of digital TV terminal provided by the invention.
Specific implementation mode
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 describes, it is clear that described embodiments are some of the embodiments of the present invention, instead of all the embodiments.Based on this hair
Embodiment in bright, the every other implementation that those of ordinary skill in the art are obtained without creative efforts
Example, shall fall within the protection scope of the present invention.
An embodiment of the present invention provides a kind of DTV channel search methods, can be applied to digital TV terminal, wherein the number
Word television terminal includes but not limited to the digital TV integrated machine of DTV STB or built-in set-top box.The DTV is searched
Platform method can ensure that program that user searches can normal play, improve the practicability of tuning and user avoided to be mistakenly considered number
Television terminal failure.The embodiment of the present invention further correspondingly provides a kind of digital TV terminal, is carried out respectively below in conjunction with attached drawing in detail
It describes in detail bright.
Fig. 1 is referred to, is the flow diagram of an embodiment of DTV channel search method provided by the invention.Such as Fig. 1
Described, which includes the following steps：
S101 traverses each frequency point for carrying NIT.
In the embodiment of the present invention, multiple frequencies described in network information table (Network Information Table, NIT)
The information of point, these frequency points include belonging to the frequency point of the network operator to prestore, and do not belong to the network operation to prestore
The frequency point of quotient.Frequency point described in NIT tables can generally carry the NIT tables.
In specific implementation, in each frequency point for carrying NIT of traversal, can NIT tables first be obtained in some frequency point, and parsing should
NIT tables obtain the frequency point for carrying the NIT tables.Optionally, some above-mentioned frequency point can be the master of digital TV terminal default setting
Frequency point can also be the frequency point that user is manually entered.
S102 stores the programm name of the first frequency point in the frequency point for carrying NIT, wherein first frequency point is ownership
In the frequency point of the network operator to prestore.
Optionally, the network operator to prestore, which is the digital TV terminal of the embodiment of the present invention, can descramble the network of its program
Operator, these operators may include one or more, can be the network operators cooperated with digital TV terminal manufacturer.
The program that the frequency point (i.e. the first frequency point) for belonging to the network operator to prestore includes is added by the network operator that this prestores
It disturbs, or does not scramble.
In the embodiment of the present invention, the program that the first frequency point includes is regardless of whether scrambling, digital TV terminal can normally be broadcast
It puts.Therefore the programm name of the first frequency point is all preserved, can be used as the part in the program searched.
S103 searches for the programm name of the second frequency point in the frequency point for carrying NIT, by the program names of second frequency point
What is be consistent with default programm name in title store.In the embodiment of the present invention, second frequency point, which does not belong to, to prestore
The frequency point of network operator；Default programm name is the clear stream program of other frequency points in addition to current frequency point in the frequency point for carry NIT
Title.Current frequency point can be the frequency point where when obtaining NIT tables herein.
For not belonging to the frequency point (i.e. the second frequency point) of the network operator to prestore, it includes scrambled program scrambling
The scrambling mode for the scrambled program that mode may include with the first frequency point is different, and digital TV terminal possibly can not descramble second
The scrambled program that frequency point includes is primarily upon clear stream program therein at this time when tuning.If including and default section in the second frequency point
The programm name that mesh title is consistent, then these programm names being consistent are the title of clear stream program in the second frequency point, if
These programs are searched, need not descramble also can normal play.
S104 is presented to the user the programm name of storage as tuning result.
According to step S102 and step S103, the programm name of storage includes the frequency point for belonging to the network operator to prestore
Including scrambled program and clear stream program title, and do not belong to included in the frequency point of the network operator to prestore
The title of clear stream program.These programs are all that can be descrambled, or without descrambling energy normal play.By these programs
Name is referred to as tuning result and is presented to the user, and can make to be presented to each program in the tuning result of user and may be viewed by.
DTV channel search method shown in FIG. 1, all sections for including by the frequency point for belonging to the network operator to prestore
The clear stream programm name that mesh title and the frequency point for not belonging to the network operator to prestore include all preserves, as tuning
As a result it is presented to the user, makes user that can not only watch the program of the network operator to prestore, can also watch the clear of other operators
Program is flowed, the quantity that may be viewed by program is increased, in addition, the program that user searches all may be viewed by, the practicability of tuning
Stronger, also avoid causes user to take for digital TV terminal when searching out the program that can not be descrambled breaks down, to ensure
The sales achievement of digital TV terminal is unaffected.
Fig. 2 is referred to, is the flow diagram of an embodiment of DTV channel search method provided by the invention.Such as Fig. 2
Described, which includes the following steps：
S201 parses the sdt_other tables in SDT, and is obtained from the sdt_other tables and preset programm name.
Wherein, the default programm name is the clear stream program of other frequency points in addition to current frequency point in the frequency point for carry NIT
Title.Frequency point where when current frequency point can be digital TV terminal acquisition NIT tables herein.
SDT Service Description Table (Service Description Table, SDT) is a kind of for describing in digital television system
The data of business information.SDT may include that sdt_actual tables and sdt_other tables, wherein sdt_other tables are worked as describing to remove
The business information, such as programm name, program category etc. of other outer frequency points of preceding frequency point.
Optionally, it may include that at least one sublist, each sublist include one in the frequency point for carry NIT in sdt_other tables
The title of the clear stream program of a second frequency point.In specific implementation, it may include there are multiple clear stream programs in second frequency point, therefore
It may include the title of multiple clear stream programs in one sublist.
In specific implementation, sublist can be generated by the network operator to prestore.The network operator to prestore can be by other
Clear stream programming statistics under the frequency point of network operator come out, and classify according to operator, and the clear stream program of different operators can
It is described respectively with different sublists.
S202 obtains the frequency point for carrying network information table NIT successively.
In the embodiment of the present invention, multiple frequencies described in network information table (Network Information Table, NIT)
The information of point, these frequency points include belonging to the frequency point of the network operator to prestore, and do not belong to the network operation to prestore
The frequency point of quotient.Frequency point described in NIT tables can generally carry the NIT tables.
Specifically, when starting tuning, can NIT tables first be obtained in some frequency point, and parse the NIT tables, obtains carrying the NIT
The frequency point of table.Optionally, some above-mentioned frequency point can be the dominant frequency point of digital TV terminal default setting, can also be user hand
The frequency point of dynamic input.
S203, often obtain one carrying NIT frequency point after judge the frequency point got original network identification whether in advance
The network identity of the network operator deposited is consistent；If so, going to step S204, step S206 is otherwise gone to.
In the embodiment of the present invention, it is consistent with the network identity of the network operator to prestore, includes being transported with the network to prestore
The network identity for seeking quotient is identical, alternatively, identical as the network identity of one of the network operator that prestores.
S204, the frequency point got described in judgement belong to the network operator to prestore.
In general, original network identification (original_network_id) is the unique mark of each network operator
Symbol, its original_network_id of different network operators are different.It can be by distinguishing original_network_
Id distinguishes network operator.
If the original_ of the original_network_id of a network operator and the network operator to prestore
Network_id is consistent, and illustrates that the network operator is exactly one of the network operator to prestore or the network operator to prestore.
S205 stores the programm name of the first frequency point in the frequency point for carrying NIT, wherein first frequency point is ownership
In the frequency point of the network operator to prestore.
Optionally, the network operator to prestore, which is the digital TV terminal of the embodiment of the present invention, can descramble the network of its program
Operator, these operators may include one or more, can be the network operators cooperated with digital TV terminal manufacturer.
The program that the frequency point (i.e. the first frequency point) for belonging to the network operator to prestore includes is added by the network operator that this prestores
It disturbs, or does not scramble.
In the embodiment of the present invention, the program that the first frequency point includes is regardless of whether scrambling, digital TV terminal can normally be broadcast
It puts.Therefore the programm name of the first frequency point is all preserved, can be used as the part in the program searched.
S206, the frequency point got described in judgement do not belong to the network operator to prestore.
If the original_ of the original_network_id of a network operator and the network operator to prestore
Network_id is not consistent, and it is one of the network operator to prestore or the network operator to prestore to illustrate the network operator not.
S207 searches for the programm name of the second frequency point in the frequency point for carrying NIT, by the program names of second frequency point
What is be consistent with default programm name in title store, wherein second frequency point is not belong to the network operator's to prestore
Frequency point.
For not belonging to the frequency point (i.e. the second frequency point) of the network operator to prestore, it includes scrambled program scrambling
The scrambling mode for the scrambled program that mode may include with the first frequency point is different, and digital TV terminal possibly can not descramble second
The scrambled program that frequency point includes is primarily upon clear stream program therein at this time when tuning.If including and default section in the second frequency point
The programm name that mesh title is consistent, then these programm names being consistent are the title of clear stream program in the second frequency point, if
These programs are searched, need not descramble also can normal play.
S208 is presented to the user the programm name of storage as tuning result.
In specific implementation, step S208 is identical as the step S104 in embodiment illustrated in fig. 1, and this will not be repeated here.
DTV channel search method shown in Fig. 2, all sections for including by the frequency point for belonging to the network operator to prestore
The clear stream programm name that mesh title and the frequency point for not belonging to the network operator to prestore include all preserves, as tuning
As a result it is presented to the user, makes user that can not only watch the program of the network operator to prestore, can also watch the clear of other operators
Program is flowed, the quantity that may be viewed by program is increased, in addition, the program that user searches all may be viewed by, the practicability of tuning
Stronger, also avoid causes user to take for digital TV terminal when searching out the program that can not be descrambled breaks down, to ensure
The sales achievement of digital TV terminal is unaffected.
Fig. 3 is referred to, is the structural schematic diagram of an embodiment of digital TV terminal provided by the invention.As shown in figure 3,
The digital TV terminal may include：
Traversal Unit 301, the frequency point for traversing each carrying network information table NIT.
First storage unit 302, the programm name for storing the first frequency point in the frequency point for carrying NIT, wherein institute
It is the frequency point for belonging to the network operator to prestore to state the first frequency point.
Second storage unit 303, the programm name for searching for the second frequency point in the frequency point for carrying NIT will be described
What is be consistent with default programm name in the programm name of second frequency point store, wherein second frequency point is pre- not belong to
The frequency point of the network operator deposited, the default programm name be it is described carry NIT frequency point in addition to current frequency point other frequency
The title of the clear stream program of point.
Display unit 304, for being presented to the user the programm name of storage as tuning result.
In the embodiment of the present invention, the information of multiple frequency points described in NIT, these frequency points include belonging to the network fortune to prestore
The frequency point of quotient is sought, and does not belong to the frequency point of the network operator to prestore.Frequency point described in NIT tables can generally carry this
NIT tables.
In specific implementation, in each frequency point for carrying NIT of traversal, can NIT tables first be obtained in some frequency point, and parsing should
NIT tables obtain the frequency point for carrying the NIT tables.Optionally, some above-mentioned frequency point can be the master of digital TV terminal default setting
Frequency point can also be the frequency point that user is manually entered.
Optionally, the network operator to prestore, which is the digital TV terminal of the embodiment of the present invention, can descramble the network of its program
Operator, these operators may include one or more, can be the network operators cooperated with digital TV terminal manufacturer.
The program that the frequency point (i.e. the first frequency point) for belonging to the network operator to prestore includes is added by the network operator that this prestores
It disturbs, or does not scramble.
In the embodiment of the present invention, the program that the first frequency point includes is regardless of whether scrambling, digital TV terminal can normally be broadcast
It puts.Therefore the programm name of the first frequency point is all preserved, can be used as the part in the program searched.
In the embodiment of the present invention, in the frequency point that default programm name be carrying NIT in addition to current frequency point other frequency points it is clear
The title of program is flowed, current frequency point can be the frequency point where when obtaining NIT tables herein.
For not belonging to the frequency point (i.e. the second frequency point) of the network operator to prestore, it includes scrambled program scrambling
The scrambling mode for the scrambled program that mode may include with the first frequency point is different, and digital TV terminal possibly can not descramble second
The scrambled program that frequency point includes is primarily upon clear stream program therein at this time when tuning.If including and default section in the second frequency point
The programm name that mesh title is consistent, then these programm names being consistent are the title of clear stream program in the second frequency point, if
These programs are searched, need not descramble also can normal play.
The programm name stored in first storage unit 302 and the second storage unit 303 includes belonging to the network to prestore
The title of scrambled program and clear stream program that the frequency point of operator is included, and do not belong to the frequency of the network operator to prestore
The title of clear stream program included in point.These programs are all that can be descrambled, or without descrambling energy normal play.
The name of these programs is referred to as tuning result to be presented to the user, can make to be presented to each program in the tuning result of user is
It may be viewed by.
As a kind of feasible embodiment, as shown in figure 4, the digital TV terminal may also include：
Resolution unit 305, for parsing the sdt_other tables in SDT Service Description Table SDT, and from the sdt_other tables
It is middle to obtain the default programm name.
SDT is a kind of data for describing business information in digital television system.SDT may include sdt_actual tables and
Sdt_other tables, wherein sdt_other tables are used to describe the business information of other frequency points in addition to current frequency point, such as program names
Title, program category etc..
Optionally, it may include that at least one sublist, each sublist include one in the frequency point for carry NIT in sdt_other tables
The title of the clear stream program of a second frequency point.In specific implementation, it may include there are multiple clear stream programs in second frequency point, therefore
It may include the title of multiple clear stream programs in one sublist.
In specific implementation, sublist can be generated by the network operator to prestore.The network operator to prestore can be by other
Clear stream programming statistics under the frequency point of network operator come out, and classify according to operator, and the clear stream program of different operators can
It is described respectively with different sublists.
As a kind of feasible embodiment, as shown in figure 4, Traversal Unit 301 may include：
Acquiring unit 3011, for obtaining the frequency point for carrying network information table NIT successively.
Specifically, when starting tuning, can NIT tables first be obtained in some frequency point, and parse the NIT tables, obtains carrying the NIT
The frequency point of table.Optionally, some above-mentioned frequency point can be the dominant frequency point of digital TV terminal default setting, can also be user hand
The frequency point of dynamic input.
Judging unit 3012, the original net for judging the frequency point got after every frequency point for obtaining a carrying NIT
Network identifies whether that the network identity with the network operator to prestore is consistent.
In the embodiment of the present invention, it is consistent with the network identity of the network operator to prestore, includes being transported with the network to prestore
The network identity for seeking quotient is identical, alternatively, identical as the network identity of one of the network operator that prestores.
First judging unit 3013, the frequency for when the judging unit 3012 is judged as YES, being got described in judgement
Point belongs to the network operator to prestore；
In general, original network identification (original_network_id) is the unique mark of each network operator
Symbol, its original_network_id of different network operators are different.It can be by distinguishing original_network_
Id distinguishes network operator.
If the original_ of the original_network_id of a network operator and the network operator to prestore
Network_id is consistent, and illustrates that the network operator is exactly one of the network operator to prestore or the network operator to prestore.
In specific implementation, the first judging unit 3013 judges that some frequency point got belongs to the network operator to prestore
Later, the first storage unit 302 stores the programm name in the frequency point, including the scrambled program in the frequency point and clear stream
Program.
Second judging unit 3014, the frequency for when the judging unit 3012 is judged as NO, being got described in judgement
Point does not belong to the network operator to prestore.
If the original_ of the original_network_id of a network operator and the network operator to prestore
Network_id is not consistent, and it is one of the network operator to prestore or the network operator to prestore to illustrate the network operator not.
In specific implementation, the second judging unit 3014 judges that some frequency point got does not belong to the network operation to prestore
After quotient, the second storage unit 303 stores the clear stream program in the frequency point.
Display unit 304 is using the programm name stored in the first storage unit 302 and the second storage unit 303 as tuning
As a result it is presented to the user.
Digital TV terminal shown in Fig. 3-4, all programs for including by the frequency point for belonging to the network operator to prestore
The clear stream programm name that title and the frequency point for not belonging to the network operator to prestore include all preserves, as tuning knot
Fruit is presented to the user, and makes user that can not only watch the program of the network operator to prestore, can also watch the clear stream of other operators
Program increases the quantity that may be viewed by program, in addition, the program that user searches all may be viewed by, the practicability of tuning is more
By force, also avoid causes user to take for digital TV terminal when searching out the program that can not be descrambled breaks down, to ensure number
The sales achievement of word television terminal is unaffected.
The steps in the embodiment of the present invention can be sequentially adjusted, merged and deleted according to actual needs.
Module or unit in device of the embodiment of the present invention can be combined, divided and deleted according to actual needs.
The unit of the embodiment of the present invention can use universal integrated circuit (such as central processor CPU), or with application-specific integrated circuit
(ASIC) it realizes.One of ordinary skill in the art will appreciate that all or part of step in the various methods of above-described embodiment
Be can be instructed by program it is relevant complete, which can be stored in a computer readable storage medium, storage
Medium may include：Flash disk, read-only memory (Read-Only Memory, ROM), random access device (Random Access
Memory, RAM), disk or CD etc..
Enumerated above is only present pre-ferred embodiments, cannot limit the right model of the present invention with this certainly
It encloses, therefore equivalent changes made in accordance with the claims of the present invention, is still within the scope of the present invention.
Claims (10)
1. a kind of DTV channel search method, which is characterized in that including：
The each frequency point for carrying network information table NIT of traversal；
The programm name for storing the first frequency point in the frequency point for carrying NIT, wherein first frequency point is belonged to and prestored
The frequency point of network operator, the network operator to prestore include one or more network operators；
The programm name for searching for the second frequency point in the frequency point for carrying NIT, will be in the programm name of second frequency point and pre-
If what programm name was consistent store, wherein second frequency point is the frequency point for not belonging to the network operator to prestore, institute
State the title that default programm name is the clear stream program of other frequency points in addition to current frequency point in the frequency point for carrying NIT；
It is presented to the user the programm name of storage as tuning result.
2. according to the method described in claim 1, it is characterized in that, each frequency point for carrying network information table NIT of the traversal,
Including：
The frequency point for carrying network information table NIT is obtained successively, judges the frequency point got after often obtaining the frequency point of a carrying NIT
Original network identification whether be consistent with the network identity of the network operator to prestore；
If being judged as YES, the frequency point got described in judgement belongs to the network operator to prestore；
If being judged as NO, the frequency point got described in judgement does not belong to the network operator to prestore.
3. according to the method described in claim 1, it is characterized in that, each frequency point for carrying network information table NIT of the traversal
Before, the method further includes：
The sdt_other tables in SDT Service Description Table SDT are parsed, and obtain the default program names from the sdt_other tables
Claim.
4. according to the method described in claim 3, it is characterized in that, the sdt_other tables include at least one sublist, each
The sublist includes the title of the clear stream program of second frequency point in the frequency point for carrying NIT.
5. according to the method described in claim 4, it is characterized in that, the sublist is the network operator's generation to prestore
's.
6. a kind of digital TV terminal, which is characterized in that including：
Traversal Unit, the frequency point for traversing each carrying network information table NIT；
First storage unit, the programm name for storing the first frequency point in the frequency point for carrying NIT, wherein first frequency
Point is the frequency point for belonging to the network operator to prestore, and the network operator to prestore includes one or more network operators；
Second storage unit, the programm name for searching for the second frequency point in the frequency point for carrying NIT, by second frequency point
Programm name in be consistent with default programm name store, wherein second frequency point is not belong to the network to prestore
The frequency point of operator, the default programm name are the clear stream of other frequency points in addition to current frequency point in the frequency point for carrying NIT
The title of program；
Display unit, for being presented to the user the programm name of storage as tuning result.
7. digital TV terminal according to claim 6, which is characterized in that the Traversal Unit includes：
Acquiring unit, for obtaining the frequency point for carrying network information table NIT successively；
Judging unit, for judging that the original network identification of the frequency point got is after every frequency point for obtaining a carrying NIT
The no network identity with the network operator to prestore is consistent；
First judging unit, the frequency point for when the judging unit is judged as YES, being got described in judgement belong to described
The network operator to prestore；
Second judging unit, when the judging unit is judged as NO, the frequency point that is got described in judgement does not belong to described pre-
The network operator deposited.
8. digital TV terminal according to claim 6, which is characterized in that the digital TV terminal further includes：
Resolution unit for parsing the sdt_other tables in SDT Service Description Table SDT, and obtains institute from the sdt_other tables
State default programm name.
9. digital TV terminal according to claim 8, which is characterized in that the sdt_other tables include at least one
Sublist, each sublist include the title of the clear stream program of second frequency point in the frequency point for carrying NIT.
10. digital TV terminal according to claim 9, which is characterized in that the sublist is the network fortune to prestore
Seek what quotient generated.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201518508U (en) * | 2009-10-28 | 2010-06-30 | 福建新大陆通信科技有限公司 | Top box of digital machine with function of programs filtration |
| CN102075807A (en) * | 2011-01-06 | 2011-05-25 | 深圳创维数字技术股份有限公司 | Digital television program searching method, and digital television receiving terminal and transmission system |
| CN103607598A (en) * | 2013-10-24 | 2014-02-26 | 深圳Tcl新技术有限公司 | Method and device for automatically recognizing network operator to realize data configuration |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201518508U (en) * | 2009-10-28 | 2010-06-30 | 福建新大陆通信科技有限公司 | Top box of digital machine with function of programs filtration |
| CN102075807A (en) * | 2011-01-06 | 2011-05-25 | 深圳创维数字技术股份有限公司 | Digital television program searching method, and digital television receiving terminal and transmission system |
| CN103607598A (en) * | 2013-10-24 | 2014-02-26 | 深圳Tcl新技术有限公司 | Method and device for automatically recognizing network operator to realize data configuration |
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