CN101888543A - Method and device for transmitting television signals in local area network (LAN) - Google Patents
Method and device for transmitting television signals in local area network (LAN) Download PDFInfo
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- CN101888543A CN101888543A CN 201010205524 CN201010205524A CN101888543A CN 101888543 A CN101888543 A CN 101888543A CN 201010205524 CN201010205524 CN 201010205524 CN 201010205524 A CN201010205524 A CN 201010205524A CN 101888543 A CN101888543 A CN 101888543A
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Abstract
The invention discloses a method and a device for transmitting television signals in a local area network (LAN). The method comprises the following steps: a transmitting terminal receives television signals transmitted from a broadcast television net, acquires a program title list and corresponding program PID codes and transmits the program title list to a receiving terminal; the receiving terminal selects the titles of programs to be played from the program title list and transmits the titles to the transmitting terminal; the transmitting terminal extracts a program stream which corresponds to the titles of the programs to be played of the receiving terminal from the television signals and transmits the program stream to the receiving terminal; and the receiving terminal receives the program stream, decodes the program stream according to the PID codes and then displays the television programs. By utilizing the method and the device of the invention, the purpose of transmitting the television signals from the broadcast television net into the LAN and then utilizing a play terminal in the LAN to play the television programs is realized.
Description
Technical field
The present invention relates to the transmission of TV signal, specifically, relate to the method and the device of transmitting television signals in local area network (LAN).
Background technology
At present, user's generally adopt following manner to teleview TV signal that platform transmits: the TV programme that TV station will transmit is encoded, is compressed and modulate, forms high-frequency signal, sends by Broadcasting Cable Network then and modulates the high-frequency signal that TV signal is arranged.The user utilizes the high-frequency signal in the television set reception Broadcasting Cable Network, demodulates TV signal from high-frequency signal, and extracts wherein vision signal and audio signal.Vision signal shows by television screen after a series of processing such as video amplification; Audio signal loud speaker by television set after Audio Signal Processing is reduced to voice signal and plays.
Along with the continuous development of network technology and the progressively lifting of user's request, more and more widely in the application of inner constructing local networks such as family, company.With the household internal local area network (LAN) is example, and equipment such as the television set in the family, computer, player, mobile phone can constitute a local area network (LAN), and the user wishes can realize resource-sharing between each interior equipment of local area network (LAN).For TV signal, the user no longer is confined to only watch by television set at present, also wishes and can watch TV programme on other equipment in family lan.
Based on the demand, how to realize that TV signal is forwarded to local area network (LAN) by Broadcasting Cable Network and transmits in local area network (LAN), carry out TV programme by the terminal equipment in the local area network (LAN) and play, then be the purport place that the present invention will study.
Summary of the invention
One of purpose of the present invention provides the method for transmitting television signals in a kind of local area network (LAN), is forwarded to the purpose of playing TV programme in the local area network (LAN), by the playback terminal in the local area network (LAN) by Broadcasting Cable Network to realize TV signal.
For achieving the above object, the present invention adopts following technical proposals to be achieved:
The method of transmitting television signals comprises the steps: in a kind of local area network (LAN)
Transmitting terminal receives the TV signal that Broadcasting Cable Network imports into, obtains program title list and corresponding program PID sign indicating number, and program title list is transferred to receiving terminal;
Receiving terminal is selected the program to be broadcast title and is transferred to transmitting terminal from program title list;
Transmitting terminal extracts from TV signal and the corresponding program stream of receiving terminal program to be broadcast title, and this program stream is transferred to receiving terminal;
Receiving terminal program receiving stream, and according to program PID sign indicating number the program stream back of decoding is play.
The method of aforesaid transmitting television signals, receiving terminal can adopt following dual mode to obtain program PID sign indicating number, to realize decoding and displaying to program stream:
When one, transmitting terminal transfer to receiving terminal with program title list, will transfer to receiving terminal with the corresponding whole program PID sign indicating numbers of programm name.
Its two, when transmitting terminal will transfer to receiving terminal with the corresponding program stream of receiving terminal program to be broadcast title, will transfer to receiving terminal with the corresponding program PID of program to be broadcast title sign indicating number.
The method of aforesaid transmitting television signals, extract the degree of association between program stream and the receiving terminal decoding and displaying program stream, the design and the realization of simplification TV signal transmission method for reducing transmitting terminal, transmitting terminal from TV signal, extract with the corresponding program stream of receiving terminal program to be broadcast title after, deposit the local buffer buffer memory earlier in; Deposit local buffer earlier in behind the receiving terminal program receiving stream, and then decode and play.
The method of aforesaid transmitting television signals, transmitting terminal extracts from TV signal and the process of the corresponding program stream of receiving terminal program to be broadcast title is: the frequency at the pairing program of transmitting terminal locking program to be broadcast title place, filter the information at this frequency place according to the program PID sign indicating number of program to be broadcast title correspondence, keep and the corresponding program stream of program to be broadcast title.
Two of purpose of the present invention provides the device of transmitting television signals in a kind of local area network (LAN), is forwarded to the purpose of playing TV programme in the local area network (LAN), by the playback terminal in the local area network (LAN) by Broadcasting Cable Network to realize TV signal.
For achieving the above object, the present invention adopts following technical proposals to be achieved:
The device of transmitting television signals comprises initiator block and receiving terminal module in a kind of local area network (LAN),
Initiator block has:
Receive processing unit, be used to receive the TV signal that Broadcasting Cable Network imports into, and obtain program title list and corresponding program PID sign indicating number;
Filter element is used for filtering extraction specific program stream from TV signal;
The network communication unit is used for the message transmission of initiator block and receiving terminal intermodule;
The receiving terminal module has:
The network communication unit is used for the message transmission between receiving terminal module and initiator block;
Main Processor Unit is used for selecting to be provided with program to be broadcast title and PID sign indicating number thereof;
The decoding and displaying unit is used for program stream is decoded and play demonstration.
The device of aforesaid transmitting television signals, receiving terminal module can adopt following dual mode to obtain program PID sign indicating number, to realize decoding and displaying to program stream:
One, the network communication unit of described initiator block is with program title list and transfer to the receiving terminal module with the corresponding whole program PID sign indicating numbers of programm name;
Its two, the network communication unit of described initiator block will be with the corresponding program stream of receiving terminal program to be broadcast title and transfer to the receiving terminal module with the corresponding program PID of program to be broadcast title sign indicating number.
The device of aforesaid transmitting television signals, extract the degree of association between program stream and the receiving terminal module decoding and displaying program stream, the design and the realization of simplification TV signal transmitting device for reducing initiator block, described initiator block also includes memory cell, is used for the cache filter unit and filters the specific program stream that extracts; Described receiving terminal module also includes memory cell, is used for the program stream of the network communication unit reception of buffer memory receiving terminal module.
The device of aforesaid transmitting television signals, described filter element filters the specific program stream that extracts, the process that described filter element extracts this program stream is: the frequency at the pairing program of locking program to be broadcast title place, filter the information at this frequency place according to the PID sign indicating number of program to be broadcast title correspondence, keep and the corresponding program stream of program to be broadcast title.
Compared with prior art, advantage of the present invention and good effect are: the present invention is in local area network (LAN) during transmitting television signals, transmitting terminal filters TV signal according to the TV programme that receiving terminal will be play, extract corresponding program stream and transfer to receiving terminal, be implemented in the purpose of playing TV programme in the local area network (LAN) on other playback terminals, satisfied the various demands of user TV reception.And, what transmit in local area network (LAN) only is single program stream, it is less to occupy the network bandwidth, reduced taking to local area network (LAN) finite bandwidth resource, guarantee on different playback terminals, not influence in the TV reception the mutual of other information in the local area network (LAN), expanded the resource-sharing scope of local area network (LAN).
After reading the specific embodiment of the present invention in conjunction with the accompanying drawings, other characteristics of the present invention and advantage will become clearer.
Description of drawings
Fig. 1 is the flow chart of an embodiment of method of transmitting television signals in the local area network (LAN) of the present invention;
Fig. 2 is the flow chart of another embodiment of method of transmitting television signals in the local area network (LAN) of the present invention;
Fig. 3 is the structured flowchart of an embodiment of device of transmitting television signals in the local area network (LAN) of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments technical scheme of the present invention is described in further detail.
The present invention wishes in local area network (LAN) the demand of TV reception on a plurality of playback terminals in conjunction with the user who is provided with local area network (LAN) at present, the method and the device of transmitting television signals in a kind of local area network (LAN) proposed, realized TV signal by Broadcasting Cable Network be forwarded to local area network (LAN), by the purpose of the terminal plays TV programme in the local area network (LAN).Consider the finiteness of local area network (LAN) bandwidth resources simultaneously, by the transfer process of rational allocation TV signal in local area network (LAN), the operating load of balanced each several part to reduce the taking of system resource, improves the validity of signal transmission.
Specifically, the method of transmitting television signals comprises the steps: that the transmitting terminal in the local area network (LAN) receives the TV signal that Broadcasting Cable Network imports in the local area network (LAN) proposed by the invention, obtain program title list and corresponding program PID sign indicating number, and program title list is transferred to receiving terminal in the local area network (LAN); Receiving terminal is selected the program to be broadcast title and is transferred to transmitting terminal from program title list; Transmitting terminal extracts from TV signal and the corresponding program stream of receiving terminal program to be broadcast title, and this single program stream is transferred to receiving terminal; Receiving terminal program receiving stream, and according to program PID sign indicating number the program stream back of decoding is play.
Utilize above-mentioned TV signal transmission method, not only can realize that TV signal plays on the playback terminal as receiving terminal in local area network (LAN), and since transmitting terminal before the TV transmission program, TV signal is extracted and filtered according to the demand of receiving terminal, only the single TV program stream that receiving terminal is needed transmits by local area network (LAN), thereby take minimum local area network (LAN) transmission bandwidth, to guarantee on different playback terminals, not influence in the TV reception the mutual of other information in the local area network (LAN).
Figure 1 shows that the flow chart of an embodiment of method of transmitting television signals in the local area network (LAN) of the present invention.
As shown in Figure 1, the detailed process of the method for transmitting television signals is in this embodiment local area network (LAN):
S101: transmitting terminal receives the Broadcasting Cable Network TV signal, obtains program title list and corresponding program PID sign indicating number.
For transmitting terminal, it is the transmit leg as TV signal in local area network (LAN), for other receiving terminals in the local area network (LAN) provide TV programme relevant information; Simultaneously, for Broadcasting Cable Network, it is again the receiving terminal of Broadcasting Cable Network, is used for receiving the TV signal of transmitting on the Broadcasting Cable Network.In the local area network (LAN) of portion, transmitting terminal can be the network machine top box in the family within the family.
Program PID sign indicating number is a TV programme essential parameter of when decoding, for each TV programme, an own unique program PID sign indicating number is arranged all.
S102: transmitting terminal is intercepted the network connecting request of receiving terminal in the local area network (LAN).
Said herein receiving terminal is meant the playback terminal with playing function, for example, in portion's local area network (LAN), can be computer, player etc. within the family.If the user wishes by the receiving terminal TV reception, then need receiving terminal to send to transmitting terminal and set up the network connection requests by local area network (LAN).
S103: transmitting terminal judges whether to have the network connecting request that receiving terminal sends.If there is execution in step S104; Otherwise, go to step S102 and continue to intercept.
S104: transmitting terminal transfers to receiving terminal by local area network (LAN) together with program title list and whole program PID sign indicating number.
TV program stream is play TV programme because receiving terminal need be decoded, so receiving terminal must possess the corresponding program PID of TV program stream sign indicating number.This embodiment by by transmitting terminal before sending TV program stream, send that the mode of transmission whole program PID sign indicating numbers that transmitting terminal obtained transfers to receiving terminal with program PID in the program title list, receiving terminal receives whole program PID sign indicating numbers and preserves.Like this, when changing platform to some TV programme, receiving terminal can directly be inquired about the program PID sign indicating number of this TV programme correspondence in this locality at every turn, and also plays with this program PID sign indicating number that inquires decoding TV program stream.
S105: receiving terminal program receiving name list and program PID sign indicating number are also preserved, and select the program to be broadcast title from the program title list that receives, and transfer to transmitting terminal then.
S106: the program to be broadcast title that transmitting terminal transmits according to receiving terminal is set program PID sign indicating number, and filtrating program stream is to extract and the corresponding program stream of program to be broadcast title.
The specific implementation process is as follows: the frequency at the pairing program of transmitting terminal locking program to be broadcast title place, filter the information at this frequency place according to the program PID sign indicating number of program to be broadcast title correspondence, filtering information on services wherein and other program streams only keep and the corresponding program stream of program to be broadcast title.
S107: the program stream after transmitting terminal will filter deposits local buffer in, waits to be transmitted.At this moment, this program stream only includes receiving terminal single TV Festival destination data to be played.
S108: transmitting terminal transfers to receiving terminal with the program stream in its local buffer by local area network (LAN).
S109: receiving terminal program receiving stream also deposits local buffer in, waits to be decoded.
S110: receiving terminal is set program PID sign indicating number, and the program stream that extracts in the local buffer carries out decoding and displaying, is implemented in receiving terminal and receives TV programme.
In this embodiment, transmitting terminal and receiving terminal all are provided with local buffer, by buffering area any buffered program stream, can effectively reduce the degree of association between transmitting terminal extraction program stream and the receiving terminal decoding and displaying program stream, simplify the design and the realization of TV signal transmission method.
If receiving terminal changes platform, then only need the programm name after switching is transferred to transmitting terminal as the program to be broadcast title, repeat above-mentioned steps S106 to S110 and get final product.
If will stop the transmission of TV signal, receiving terminal or transmitting terminal send the order of network connection termination and receive local operation, and the other end receives and stops also stopping local operation after the order, and the TV signal transmission course finishes.
The foregoing description employing is transmitted whole program PID sign indicating numbers that transmitting terminal obtained in transmitting terminal transmission program title list in receiving terminal mode transfers to receiving terminal with program PID, therefore, need receiving terminal to possess certain memory space and deposit a large amount of program PID sign indicating numbers.If the receiving terminal limited storage space, then receiving terminal also can adopt method embodiment illustrated in fig. 2 to obtain program PID sign indicating number.
Figure 2 shows that the flow chart of another embodiment of method of transmitting television signals in the local area network (LAN) of the present invention.The difference of the flow process of the flow process of this embodiment and Fig. 1 embodiment is that receiving terminal obtains the mode of program PID sign indicating number, and other flow processs are basic identical.Below the TV signal transmission method of Fig. 2 embodiment is done one and briefly describe, other contents of not describing can be with reference to the narration of figure 1 embodiment.
As shown in Figure 2, the detailed process of the method for transmitting television signals is in this embodiment local area network (LAN):
S201: transmitting terminal receives the Broadcasting Cable Network TV signal, obtains program title list and corresponding program PID sign indicating number.
S202: transmitting terminal is intercepted the network connecting request of receiving terminal in the local area network (LAN).
S203: transmitting terminal judges whether to have the network connecting request that receiving terminal sends.If there is execution in step S104; Otherwise, go to step S202 and continue to intercept.
S204: transmitting terminal transfers to receiving terminal with program title list by local area network (LAN).
S205: receiving terminal program receiving name list is also preserved, and selects the program to be broadcast title from the program title list that receives, and transfers to transmitting terminal then.
S206: the program to be broadcast title that transmitting terminal transmits according to receiving terminal is set program PID sign indicating number, and filtrating program stream is to extract and the corresponding program stream of program to be broadcast title.
The specific implementation process is as follows: the frequency at the pairing program of transmitting terminal locking program to be broadcast title place, filter the information at this frequency place according to the program PID sign indicating number of program to be broadcast title correspondence, filtering information on services wherein and other program streams only keep and the corresponding program stream of program to be broadcast title.
S207: the program stream after transmitting terminal will filter deposits local buffer in, waits to be transmitted.At this moment, this program stream only includes receiving terminal single TV Festival destination data to be played.
S208: transmitting terminal transfers to receiving terminal with the program stream in its local buffer by local area network (LAN), simultaneously transmission and the corresponding program PID of this program stream sign indicating number.
S209: the receiving terminal program receiving flows and program PID sign indicating number, and deposits program stream in local buffer, waits to be decoded.
S210: receiving terminal extracts the program stream in the local buffer, and carries out decoding and displaying according to the program PID sign indicating number that receives, and is implemented in receiving terminal and receives TV programme.
If receiving terminal changes platform, then only need the programm name after switching is transferred to transmitting terminal as the program to be broadcast title, repeat above-mentioned steps S206 to S210 and get final product.
If will stop the transmission of TV signal, receiving terminal or transmitting terminal send the order of network connection termination and receive local operation, and the other end receives and stops also stopping local operation after the order, and the TV signal transmission course finishes.
In the foregoing description, the mode that receiving terminal obtains program PID sign indicating number is: receiving terminal is not stored a large amount of program PID sign indicating numbers and is used for inquiry, and transmitting terminal transfers to receiving terminal together with corresponding program PID sign indicating number in transmission receiving terminal TV program stream to be played.The advantage of the mode of this transmission program PID sign indicating number is lower to the receiving terminal storage capacity requirement, does not need to be divided into a large amount of program PID sign indicating number of extra capacity storage; With respect to the mode among Fig. 1 embodiment, its shortcoming is a receiving terminal when each switching TV program, all be attended by and carry out the mutual process of program PID sign indicating number transmission between transmitting terminal and the receiving terminal, this may can cause the user to operate the time-delay of response to a certain extent, but this time-delay can be controlled in local area network communication within user's comfort scope.
Figure 3 shows that the structured flowchart of an embodiment of device of transmitting television signals in the local area network (LAN) of the present invention.
As Fig. 3, the device of transmitting television signals comprises initiator block 31 and receiving terminal module 32 in the local area network (LAN) of this embodiment.
Initiator block 31 has:
Receive processing unit 311, be used to receive the TV signal that Broadcasting Cable Network imports into, and obtain program title list and corresponding program PID sign indicating number;
Filter element 312 is used for from receiving the TV signal filtration extraction specific program stream that processing unit 311 receives;
Network communication unit 314 is used for the message transmission between transmitting terminal and receiving terminal;
Receiving terminal module 32 has:
Network communication unit 321 is used for the message transmission between receiving terminal and transmitting terminal;
Main Processor Unit 323 is used for selecting to be provided with program to be broadcast title and PID sign indicating number thereof;
Decoding and displaying unit 324 is used for program stream is decoded and play demonstration.
The course of work of the device of the transmitting television signals of said structure is as follows: the reception processing unit 311 in the initiator block 31 receives the TV signal of Broadcasting Cable Network transmission, and obtains program title list and corresponding program PID sign indicating number.By network communication unit 314 program title list or program title list and program PID sign indicating number are transferred to receiving terminal module 32 then.Receiving terminal module 32 is selected one as the program to be broadcast title by the data of its network communication unit 321 receiving end/sending ends transmission by Main Processor Unit from program title list.Network communication unit 321 transfers to initiator block 31 with the program to be broadcast title.Receive processing unit 311 and set program PID sign indicating number according to the program to be broadcast title that receives, utilize filter element 312 from TV signal, to filter to extract specific program stream, and this specific program stream or specific program stream and corresponding program PID sign indicating number thereof are transferred to receiving terminal module 32 by network communication unit 314 corresponding to the program to be broadcast title.Decoding to program stream according to program PID sign indicating number and show output in the decoding and displaying unit 324 of receiving terminal module, realizes the purpose of receiving terminal module broadcast TV programme.
As mentioned above, receiving terminal module 32 can adopt following dual mode to obtain program PID sign indicating number, to realize decoding and displaying to program stream:
One, the network communication unit 314 of initiator block 31 is with program title list and transfer to receiving terminal module 32 with the corresponding whole program PID sign indicating numbers of programm name;
Its two, the network communication unit 314 of initiator block 31 will be with the corresponding program stream of receiving terminal module 32 program to be broadcast titles and transfer to receiving terminal module 32 with the corresponding program PID of program to be broadcast title sign indicating number.
Above-mentioned two kinds of pluses and minuses of obtaining program PID sign indicating number have been made detailed description in the method embodiment of Fig. 1 and Fig. 2, can be for reference.
Device for the transmitting television signals of this embodiment, extract the design and the realization of the degree of association between program streams and the receiving terminal module 32 decoding and displaying program streams, simplification TV signal transport module for reducing initiator block 31, guarantee that TV program stream stablizes correct transmission, initiator block 31 also includes memory cell, is used for cache filter unit 312 and filters the specific program stream that extracts; And receiving terminal module 32 also includes memory cell 322, is used for the program stream of network communication unit 321 receptions of buffer memory receiving terminal module.
In this embodiment, filter element 312 filters the specific program stream that extracts, the process that filter element 312 extracts this program stream is: the frequency at the pairing program of locking program to be broadcast title place, filter the information at this frequency place according to the PID sign indicating number of program to be broadcast title correspondence, keep and the corresponding program stream of program to be broadcast title.
The mutual cooperation in each unit among this embodiment extracts program stream from TV signal, through the local area network (LAN) transmission, by decoding of receiving terminal module and final the broadcast, realize the purpose by receiving terminal module TV reception in the local area network (LAN).
Above embodiment is only in order to illustrating technical scheme of the present invention, but not limits it; Although the present invention is had been described in detail with reference to previous embodiment, for the person of ordinary skill of the art, still can make amendment to the technical scheme that previous embodiment is put down in writing, perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of the present invention's technical scheme required for protection.
Claims (10)
1. the method for the interior transmitting television signals of local area network (LAN) is characterized in that, comprises the steps:
Transmitting terminal receives the TV signal that Broadcasting Cable Network imports into, obtains program title list and corresponding program PID sign indicating number, and program title list is transferred to receiving terminal;
Receiving terminal is selected the program to be broadcast title and is transferred to transmitting terminal from program title list;
Transmitting terminal extracts from TV signal and the corresponding program stream of receiving terminal program to be broadcast title, and this program stream is transferred to receiving terminal;
Receiving terminal program receiving stream, and according to program PID sign indicating number the program stream back of decoding is play.
2. the method for transmitting television signals according to claim 1 is characterized in that, when transmitting terminal transfers to receiving terminal with program title list, will transfer to receiving terminal with the corresponding whole program PID sign indicating numbers of programm name.
3. the method for transmitting television signals according to claim 1, it is characterized in that, when transmitting terminal will transfer to receiving terminal with the corresponding program stream of receiving terminal program to be broadcast title, will transfer to receiving terminal with the corresponding program PID of program to be broadcast title sign indicating number.
4. the method for transmitting television signals according to claim 1 is characterized in that, transmitting terminal from TV signal, extract with the corresponding program stream of receiving terminal program to be broadcast title after, deposit the local buffer buffer memory earlier in; Deposit local buffer earlier in behind the receiving terminal program receiving stream, and then decode and play.
5. according to the method for each described transmitting television signals in the claim 1 to 4, it is characterized in that, transmitting terminal extracts from TV signal and the process of the corresponding program stream of receiving terminal program to be broadcast title is: the frequency at the pairing program of transmitting terminal locking program to be broadcast title place, filter the information at this frequency place according to the program PID sign indicating number of program to be broadcast title correspondence, keep and the corresponding program stream of program to be broadcast title.
6. the device of the interior transmitting television signals of local area network (LAN) is characterized in that, comprises initiator block and receiving terminal module,
Initiator block has:
Receive processing unit, be used to receive the TV signal that Broadcasting Cable Network imports into, and obtain program title list and corresponding program PID sign indicating number;
Filter element is used for filtering extraction specific program stream from TV signal;
The network communication unit is used for the message transmission of initiator block and receiving terminal intermodule;
The receiving terminal module has:
The network communication unit is used for the message transmission between receiving terminal module and initiator block;
Main Processor Unit is used for selecting to be provided with program to be broadcast title and PID sign indicating number thereof;
The decoding and displaying unit is used for program stream is decoded and play demonstration.
7. the device of transmitting television signals according to claim 6 is characterized in that, the network communication unit of described initiator block is with program title list and transfer to the receiving terminal module with the corresponding whole program PID sign indicating numbers of programm name.
8. the device of transmitting television signals according to claim 6, it is characterized in that the network communication unit of described initiator block will and transfer to the receiving terminal module with the corresponding program PID of program to be broadcast title sign indicating number with the corresponding program stream of receiving terminal module program to be broadcast title.
9. the device of transmitting television signals according to claim 6 is characterized in that, described initiator block also includes memory cell, is used for the cache filter unit and filters the specific program stream that extracts; Described receiving terminal module also includes memory cell, is used for the program stream of the network communication unit reception of buffer memory receiving terminal module.
10. according to the device of each described transmitting television signals in the claim 7 to 9, it is characterized in that, described filter element filters the specific program stream that extracts, the process that described filter element extracts this program stream is: the frequency at the pairing program of locking program to be broadcast title place, filter the information at this frequency place according to the PID sign indicating number of program to be broadcast title correspondence, keep and the corresponding program stream of program to be broadcast title.
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| CN 201010205524 CN101888543A (en) | 2010-06-10 | 2010-06-10 | Method and device for transmitting television signals in local area network (LAN) |
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| CN 201010205524 CN101888543A (en) | 2010-06-10 | 2010-06-10 | Method and device for transmitting television signals in local area network (LAN) |
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Application publication date: 20101117 |