CN201571164U - Code stream switching device and system capable of supporting PID permutation and program recorded broadcasting - Google Patents
Code stream switching device and system capable of supporting PID permutation and program recorded broadcasting Download PDFInfo
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- CN201571164U CN201571164U CN2009201098675U CN200920109867U CN201571164U CN 201571164 U CN201571164 U CN 201571164U CN 2009201098675 U CN2009201098675 U CN 2009201098675U CN 200920109867 U CN200920109867 U CN 200920109867U CN 201571164 U CN201571164 U CN 201571164U
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Abstract
The utility model relates to a code stream switching device and a system capable of supporting PID permutation function and program recorded broadcasting function. The code stream switching device comprises a configuration interface module, a fault judging module and a fault processing module. The system comprises a main channel device, a standby channel device, an auxiliary channel device and the code stream switching device. The main channel device, the standby channel device and the auxiliary channel device are respectively connected with the code stream switching device and are used for inputting program code stream signals. The code stream switching device determines whether to conduct code stream switching or program PID permutation. If a certain program in the code stream signals faults only, the program is permutated through program PID permutation and an entire code stream is not required to be switched. Thereby, the reliability and the security of programs viewed by subscribers are guaranteed.
Description
Technical field
The utility model belongs to Digital Television monitoring technique field, refers to the TS stream automatic switching apparatus and the system of a kind of PID of support displacement and program pad multicast function especially
Background technology
TV, broadcasting are the most basic audio-visual devices of each family, watch and listen to program for what ensure that the user can be comfortable, the reliability and the fail safe of signal bit stream are most important, have so occurred detecting the code stream signal fault, and can make the code stream switching equipment of timely processing.
Present code stream switching equipment generally adopts active and standby, auxilliary three road code streams input, when the main path signal of common output breaks down, switches to road fully, when the road signal breaks down fully, switches to bypass again.Because only being a program in the code stream sometimes, the main path signal fault breaks down, and other programs are normal, and when carrying out the code stream switching, the program that not only breaks down broadcasts and is affected, originally be the normal program that broadcasts, also can of short duration blank screen, quiet frame or mosaic occur owing to code stream switches.Simultaneously, in order to match with the equipment (generally being multiplexer) of rear end, it is duplicate requiring the structure and the PID of active and standby, auxilliary three code streams.So just limited the application scenario of code stream switching equipment.
In the prior art, requiring main road, being equipped with the road is identical code stream, at the main road code stream or when wherein certain program goes wrong, can be directly switch to road fully like this, and the multiplexer of back can normally be discerned the broadcast code stream like this.Simultaneously, the bypass program that pad is broadcast usefulness is the Polymera stream that is broadcasted by server, and the content of each program generally is the same, sends but will be packaged among the PID identical with main road.There are two problems in such structure: first, when main road, when identical signal source (such as the satellite-signal from culminant star 6B) is adopted on the road fully, if signal source itself (such as the satellite repeater fault etc.) out of joint, the signal that is equipped with the road so also can't use simultaneously; The function that is equipped with the road only is embodied in when the main road receiver breaks down, and can adopt road receiver output signal fully.Second, can discern code stream after the failover for the multiplexer that makes the rear end,, but still will broadcast server by a cushion although bypass has only the content of a program, this program is packaged among the different PID, generates a huge multiplex stream that comprises all programs and output to multiplexer.So this processing mode system complexity height, and when any main path signal changes, produce and generate huge pad again and broadcast code stream, use very inconvenient.
The utility model content
At the problem that prior art exists, one of the purpose of this utility model is to provide a kind of code stream switching equipment of supporting program PID displacement and program pad multicast function.
Another purpose of the present utility model is to provide in a kind of code stream handoff procedure, does not influence the media play system that the user watches program.
For achieving the above object, the code stream switching equipment of support program PID displacement of the present utility model and program pad multicast function comprises configuration interface module, fault judgement module, fault processing module;
That the configuration interface module is used to specify is active and standby, the program map relation between the bypass, finishes the PID to the PID displacement of main road or bypass to main road of road fully according to the program map relation and replaces;
The fault judgement module is used for the fault of monitor signal, carries out further troubleshooting according to fault type;
Fault processing module is finished PID displacement or code stream and is switched according to the fault type of fault judgement module monitors.
Further, the fault-signal of described fault judgement module monitors comprises that dropout, synchronization loss, PID lose, descrambling is failed.
Further, described fault processing module comprises the PID replacement module, when the PID of main road program loses, the PID replacement module is from Program Map Table, find road or the corresponding with it program pid data bag of bypass fully, the pid value of this packet is modified as the corresponding pid value of main road, keeps in the packet out of Memory constant simultaneously.
Further, described fault processing module also comprises code stream pad broadcasting module, when the signal of all programs of main road all breaks down when needing code stream to switch, fault processing module is used for revising the pid value of program data packets of code stream and the PSI/SI form data that these programs are described in output.
Further, when main road by switching bypass list program stream pad sowing time, described code stream pad broadcasting module is many parts of data cladding systems of bypass, and repacks in the output stream with different pid values, realizes that program of bypass broadcasts to the pad of a plurality of programs of main road.
Adopt the program media Play System of above code stream switching equipment, comprise main road equipment, be equipped with pipeline equipment, bypass equipment and code stream switching equipment, main road, be equipped with the road and link to each other with the input of code stream switching equipment respectively with bypass equipment, the code stream switching equipment output is connected with multiplexer, when the main road signal bit stream that code stream switching equipment monitors main road equipment input broke down, what code stream switching equipment will be equipped with the pipeline equipment input was equipped with the road signal bit stream as the output code flow signal; When code stream switching equipment monitors the main road signal bit stream of main road equipment input and is equipped with being equipped with the road signal bit stream and breaking down simultaneously of pipeline equipment input, code stream switching equipment with the bypass signal bit stream of bypass equipment input as the output code flow signal.
Further, described main road equipment and be equipped with that pipeline equipment comprises that satellite receiver is used for receiving and to code stream switching equipment input code flow signal.
Further, the signal bit stream that the satellite receiver of described main road equipment is carried is a single-unit order signal bit stream, and many satellite receiver correspondences are carried single-unit order signal bit stream to the main road input of many described code stream switching equipments.
Further, the signal bit stream that the described satellite receiver that is equipped with pipeline equipment is carried is the Polymera signal bit stream, the Polymera signal bit stream is distributed to the road input fully of many described code stream switching equipments through TS stream signal distributor.
Further, the signal bit stream that the described satellite receiver that is equipped with pipeline equipment is carried is the Polymera signal bit stream, and many corresponding respectively road inputs that are equipped with to many code stream switching equipments of satellite receiver are carried the Polymera signal bit stream.
Further, described bypass equipment comprises the code stream player, and this code stream player is to code stream switching equipment input single-unit order signal bit stream.
Further, described code stream player also is connected with TS stream signal distributor, and the single-unit order signal bit stream that the code stream player is carried flows signal distributor through TS, single-unit order signal bit stream is assigned to the bypass input of each code stream switching equipment.
Further, the bypass input of each code stream switching equipment all is connected with the code stream player that can import single-unit order signal bit stream.
Adopt the program media Play System of above code stream switching equipment, comprise main road equipment, be equipped with pipeline equipment, bypass equipment and code stream switching equipment, main road, be equipped with the road and link to each other with the input of code stream switching equipment respectively with bypass equipment, when the main road signal bit stream that code stream switching equipment monitors main road equipment input broke down, what code stream switching equipment will be equipped with the pipeline equipment input was equipped with the road signal bit stream as the output code flow signal; When code stream switching equipment monitors the main road signal bit stream of main road equipment input and is equipped with being equipped with the road signal bit stream and breaking down simultaneously of pipeline equipment input, code stream switching equipment with the bypass signal bit stream of bypass equipment input as the output code flow signal.
Further, described main road equipment comprises satellite receiver and multiplexer, the signal bit stream that satellite receiver is carried is a single-unit order signal bit stream, many satellite receiver are through multiplexer, a plurality of single-unit order signal bit streams are converted to the Polymera signal bit stream, are input to the main road input of described code stream switching equipment.
Further, the described pipeline equipment that is equipped with comprises Polymera signal bit stream satellite receiver, and this satellite receiver is transported to the Polymera signal bit stream road input fully of described code stream switching equipment.
Further, described bypass equipment comprises the code stream player, and this player is transported to single-unit order signal bit stream the bypass input of described code stream switching equipment.
Main road in the code stream switching equipment of the present utility model, be equipped with the road and can import diverse code stream, by preestablishing the mapping relations between the program, finishing main road switches to when being equipped with the road, being equipped with the road is modeled to and the identical code stream of main road, do the problem of road signal fully with regard to having solved like this with the unlike signal source, and the possibility that the satellite-signal of two-way all goes wrong is very low, even the satellite-signal of main road goes wrong, can switch to road signal fully, solve main road and be equipped with the road and adopted same signal bit stream, in case satellite-signal goes wrong, main road all can go wrong with the signal bit stream that is equipped with the road, influences the user and watches TV programme.In addition, the bypass of code stream switching equipment of the present utility model only needs to utilize encoder or code stream broadcasting server, a single program stream is provided, and needn't retrain the PID value, can finish the Polymera stream that utilizes a program pad to broadcast main road, and when main path signal changes, only need to revise the corresponding pid information of main road in the mapping table, broadcast code stream and needn't change pad; When monitoring that has a plurality of broadcast streams and switching, by with this single-unit order flow distribution, can finish a single program stream pad very easily and broadcast the function of a plurality of Polymera streams, saved and filled up the huge spending of broadcasting server apparatus, simultaneously when system changes, the required change of doing is very little, effectively reduces system cost and complexity.
Description of drawings
Fig. 1 is the schematic diagram of code stream switching equipment of the present utility model;
Fig. 2 is the structural representation of program media Play System of the present utility model among the embodiment 1;
Fig. 3 is the structural representation of program media Play System of the present utility model among the embodiment 2.
Embodiment
As shown in Figure 1, code stream switching equipment of the present utility model comprises configuration interface module, fault judgement module, fault processing module;
That the configuration interface module is used to specify is active and standby, the program map relation between the bypass, finishes the PID to the PID displacement of main road or bypass to main road of road fully according to the program map relation and replaces;
The fault judgement module is used for the fault of monitor signal, carries out further troubleshooting according to fault type;
Fault processing module is finished PID displacement or code stream and is switched according to the fault type of fault judgement module monitors.
TS stream input interface module is finished the ASI interface TS stream signal of serial of input to the conversion of the TS stream signal of parallel TSI interface among Fig. 1; TS stream output interface module is finished the conversion of the parallel TSI interface of output to the ASI interface of serial.The FPGA module mainly inputs to flush bonding processor with the main road of importing, the TS flow data packing that is equipped with road, three passages of bypass, flush bonding processor under the cooperation of SDRAM, flash memory module, according to user configuration finish that fault judgement, fault are handled automatically, function such as PID displacement and pad are broadcast.Network Interface Module is used to receive the user's configuration from upper computer software, and current code stream treatment state is reported to host computer, by upper computer software completion status deixis.
The configuration interface module:
For the fault detect that realizes TS stream is automaticallyed switch, active and standby, which fault of bypass signal monitoring that the user need dispose, and the threshold value of every fault, whether carry out the enable switch setting that PID displacement or code stream switch.By configuration interface, that the user can also specify is active and standby, the program map relation between the bypass, when the main road program breaks down, finishes the PID to the PID displacement of main road or bypass to main road of road fully according to the mapping relations of this program and replaces; When active and standby, bypass code stream not simultaneously, if the whole code stream of main road (being equivalent to all programs) is unusual, after automatically switching to fully road or bypass, according to this program map relation, equipment can be finished and revise code stream information, be equipped with the function that road or bypass code stream pad broadcast the code stream identical with main road to broadcast with different.
The fault judgement module:
This module is carried out automatic fault diagnosis according to which fault of monitoring, every fault threshold that the user sets, so that finish fault warning and further troubleshooting.The fault that equipment can be monitored has: dropout, synchronization loss, PID lose, descrambling is failed.
Fault processing module:
Fault processing module is core technology of the present utility model place, and its key technology comprises the PID replacement technique, fills up the technology of broadcasting.According to the different faults type that reality takes place, equipment can be finished the PID displacement or fill up the troubleshooting of broadcasting, to guarantee the normal broadcast of program.
The application scenario (referring to application example) of PID displacement: when main road, to be equipped with the road be that two Polymeras streams are (when being equipped with the road signal without multiplexer, it is different code streams, during through multiplexer, be identical code stream), but program source is different, when looking audio frequency PID when main road and losing (such as the receiver fault of HNTV's correspondence), can will be equipped with in the road content that should program, be encapsulated among the PID of this program of main road and broadcast, and can not influence other normal program.This process is referred to as the PID displacement.
PID displacement and realization thereof:
In the PID replacement module, when the PID of main road program loses, promptly from Program Map Table, find fully road or the bypass should corresponding with it program pid data bag, the pid value of this bag is modified as the corresponding pid value of main road, keep other information in the packet (such as continuous counter value, PCR field, video/audio etc.) constant simultaneously, show so that guarantee the receiving terminal normal decoder.
The application scenario (referring to application example) broadcast of pad: when main road, what be equipped with road, bypass input is different code streams, losing when main path signal (is that whole programs are all lost in the whole code stream, such as the multiplexer fault) time, can automatically switch to that fully the road is (same, when the road signal is also lost fully, also can switch to bypass).At this moment, will be equipped with the diverse code stream in road (or bypass) and be packaged into process with the identical code flow structure of main road, and be referred to as pad and broadcast.
Pad is broadcast and is realized:
When being different code streams and need carrying out code stream when switching of active and standby, auxilliary input, be the operate as normal that guarantees receiving terminal, be equipped with road (or bypass) and need output and the identical code stream of main road.At this moment, at first need to export the PSI/SI form data of describing these programs, this form data and main road form data are identical, so need PSI/SI form data to main road to cushion in the equipment and refresh in real time.Simultaneously, also need mapping table, revise the pid value that is equipped with the program data packets in the code stream of road (or bypass), promptly finish the operation of PID displacement according to PID.If bypass is single program stream, a packet of bypass need be copied into many parts and repack in the output stream with different pid values, so that realize the pad multicast function of program of bypass to a plurality of programs.
Code stream switching equipment of the present utility model has reduced the conforming requirement of input signal, therefore can save and carry out the pre-multiplexing equipment handled with the main road consistency being equipped with the road signal, be that the pad that comprises all program PID of main road is broadcast stream owing to no longer requiring bypass simultaneously, saved that high performance pad is broadcast server and loaded down with trivial details pad is broadcast stream manufacturing process, only needed to use simple code stream player to broadcast single program stream that a no PID limits and get final product.When main road is Polymera when stream, because the PID monitoring is arranged in the equipment, when monitoring that main road program PID loses rather than main path signal when losing, equipment only the program of losing is equipped with the road or bypass is replaced processing, and can not influence the broadcast of other programs in the main road.The comparison of analogy code stream switching equipment of the present utility model and the existing similar technology of tabulating below:
| Similar prior art | The utility model | |
| Requirement to input signal | Require active and standby road signal identical, bypass comprises all programs of main road. | Consistency active and standby, the bypass signal is not strict with. |
| Processing mode when certain program breaks down | No matter be code stream fault or program failure, all carry out the switching of whole code stream. | Only need to handle the program that breaks down, and do not influence other programs in the code stream. |
| The effect of troubleshooting | All programs in the code stream all of short duration mosaic may occur in handoff procedure. | Only the fault program has a small amount of mosaic at the beginning of replacing it, and does not have the program of fault to broadcast unaffected. |
| Requirement to equipment | Be equipped with the road signal demand through pre-multiplexer, bypass need be broadcast the more piece height of eye code check code stream that server is made, output is complicated by pad. | Being equipped with the road does not need pre-multiplexer to carry out the processing of PID consistency.The bypass code stream does not need to fill up the complex process of broadcasting server yet.Only need to provide simple code stream player plays a single program stream. |
Table 1
Embodiment 1:
As shown in Figure 2, certain Cable Network network transmission center need to receive satellite TV signal, therefrom extracts HNTV, Jiangsu satellite TV, ZTV, southeast satellite TV, Anhui satellite TV, Sichuan satellite TV six programs and is placed in the code stream and exports.Broadcast for the safety that ensures TV programme, it generally is the satellite TV signal of single program stream that transmission center receives from culminant star 6B satellite, gives the multiplexer of oneself, so that become a TS stream to transmit these six program multiplexings from different receivers; Simultaneously in order to guarantee when the satellite-signal of culminant star 6B goes wrong, the unlikely user of influence watches respective program, it generally is the satellite TV signal of Polymera stream that transmission center needs to receive from culminant star 9B satellite simultaneously, will be from the same TV programme of culminant star 9B as space signal; And if the signal of culminant star 6B and culminant star 9B goes wrong simultaneously, transmission center will guarantee that still the user can watch program, at this moment just use a local program of playing as auxiliary signal, in case main path signal, space signal all break down, transmit as the substitution signal of six satellite TVs simultaneously with this programs, can not break to guarantee TV signal.
Although it is identical with the content of TV program of culminant star 9B from culminant star 6B, but the code flow structure difference at program place, packet ID number (being PID) comprising programme content are also different, and for the multiplexer of rear end, must specify each satellite TV's program in advance PID number, only working as respective program is placed in the pid data bag of appointment, and in the PSI/SI form, having carried out corresponding indication, multiplexer just can get access to this program, so that multiplexing outputing in the local transmission network.Same reason, the TV programme of bypass will substitute six satellite TVs of main road programs and broadcast, and also need to export correct PSI/SI form data, and this program is packaged into six corresponding PID sends, and the device that just can be re-used identification accomplishes the end in view.
Program media Play System of the present utility model, corresponding HNTV, Jiangsu satellite TV, ZTV, southeast satellite TV, Anhui satellite TV, Sichuan satellite TV six programs are provided with six code stream switching equipments, the corresponding input one cover single-unit order signal bit stream of the main road input of code stream switching equipment, the Polymera signal bit stream of containing above all programs that is equipped with the reception of road input conveying culminant star 9B satellite receiver of code stream switching equipment, wherein each code stream switching equipment is corresponding connects a culminant star 9B satellite receiver or adopts TS to flow the road input fully that six code stream switching equipments distributed to the signal bit stream of a culminant star 9B satellite receiver by signal distributor.Code stream switching equipment be equipped with the single-unit order signal bit stream that the road input inserts local code stream player, in case main road, be equipped with the road and all go wrong to fill up and broadcast the bypass signal bit stream.In like manner, the code stream player single-unit order signal bit stream also can adopt TS stream signal distributor to be assigned to being equipped with the road or being provided with that each code stream switching equipment is corresponding to connect a code stream player of six code stream switching equipments.The output connection multiplexing device output of code stream switching equipment comprises the signal bit stream of above all programs.It is to be noted that the main road of system of the present utility model, the program number that is equipped with the code stream of road and bypass input are not limited to six programs, also can expand other program according to the actual requirements, the number of the code stream switching equipment in the corresponding native system also changes with the change of the number of program.
Embodiment 2:
As shown in Figure 3, system of the present utility model also can only adopt a code stream switching equipment, the single-unit order signal bit stream of culminant star 6B satellite receiver, through multiplexer different a plurality of code stream multiplexs are become a Polymera code stream, the output code flow of multiplexer is linked into the main road input of code stream switching equipment; Therefore culminant star 9B satellite receiver does not need to adopt multiplexer can be directly inputted to the road input fully of code stream switching equipment owing to be the Polymera signal bit stream; Single program stream of code stream player is input to the bypass input of code stream switching equipment; Final code stream switching equipment is judged whether main road, bypass break down and is determined whether carrying out that code stream switches or PID replaces.When the culminant star 6B receiver that receives certain satellite TV's program breaks down, in order not influence the broadcast of other satellite TV's programs in this code stream, only need the satellite TV's program that breaks down is carried out the PID replacement operator, and other programs in this code stream can be not influenced, promptly phenomenons such as blank screen or mosaic can not occur.When the satellite-signal transponder of culminant star 6B or multiplexer break down, all satellite TV's programs of main road all occur unusually, even be equipped with the road signal bit stream different this moment with main road, system also can automatically switch to road fully, this equipment utilization pad multicast function, can simulate the code stream output of main road fully, guarantee the operate as normal of broadcast system, thereby reach the purpose that safety is broadcasted.
It is to be noted and any distortion of making according to embodiment of the present utility model all do not break away from the scope that spirit of the present utility model and claim are put down in writing.
Claims (10)
1. a code stream switching equipment of supporting program PID displacement and program pad multicast function is characterized in that, comprises configuration interface module, fault judgement module, fault processing module;
That the configuration interface module is used to specify is active and standby, the program map relation between the bypass, finishes the PID to the PID displacement of main road or bypass to main road of road fully according to the program map relation and replaces;
The fault judgement module is used for the fault of monitor signal, carries out further troubleshooting according to fault type;
Fault processing module is finished PID displacement or code stream and is switched according to the fault type of fault judgement module monitors.
2. code stream switching equipment as claimed in claim 1, it is characterized in that, described fault processing module comprises the PID replacement module, the PID replacement module is from Program Map Table, find road or the corresponding with it program pid data bag of bypass fully, the pid value of this packet is modified as the corresponding pid value of main road, keeps in the packet out of Memory constant simultaneously.
3. code stream switching equipment as claimed in claim 1 is characterized in that, described fault processing module also comprises code stream pad broadcasting module, and fault processing module is used for revising the pid value of program data packets of code stream and the PSI/SI form data that these programs are described in output.
4. the program media Play System of an employing such as each described code stream switching equipment of claim 1-3, it is characterized in that, comprise main road equipment, be equipped with pipeline equipment, bypass equipment and code stream switching equipment, main road, be equipped with the road and link to each other with the input of code stream switching equipment respectively with bypass equipment, when the main road signal bit stream that code stream switching equipment monitors main road equipment input broke down, what code stream switching equipment will be equipped with the pipeline equipment input was equipped with the road signal bit stream as the output code flow signal; When code stream switching equipment monitors the main road signal bit stream of main road equipment input and is equipped with being equipped with the road signal bit stream and breaking down simultaneously of pipeline equipment input, code stream switching equipment with the bypass signal bit stream of bypass equipment input as the output code flow signal.
5. media play system as claimed in claim 4 is characterized in that, described main road equipment and be equipped with that pipeline equipment comprises that satellite receiver is used for receiving and to code stream switching equipment input code flow signal.
6. media play system as claimed in claim 5, it is characterized in that, the signal bit stream that the satellite receiver of described main road equipment is carried is a single-unit order signal bit stream, many satellite receiver correspondences are carried single-unit order signal bit stream to the main road input of many described code stream switching equipments, the output of described code stream switching equipment is connected with multiplexer, and this multiplexer is converted to the output of Polymera signal bit stream with single-unit order signal bit stream.
7. media play system as claimed in claim 5, it is characterized in that, the signal bit stream that the described satellite receiver that is equipped with pipeline equipment is carried is the Polymera signal bit stream, the Polymera signal bit stream is distributed to the road input fully of many described code stream switching equipments through TS stream signal distributor.
8. media play system as claimed in claim 5, it is characterized in that, the signal bit stream that the satellite receiver of described main road equipment is carried is a single-unit order signal bit stream, many satellite receiver are through multiplexer, a plurality of single-unit order signal bit streams are converted to the Polymera signal bit stream, are input to the main road input of described code stream switching equipment.
9. media play system as claimed in claim 5 is characterized in that, the described signal bit stream satellite receiver that is equipped with pipeline equipment is equipped with the road input with what the Polymera signal bit stream was transported to described code stream switching equipment.
10. media play system as claimed in claim 4 is characterized in that, described bypass equipment comprises the code stream player, and this player is transported to single-unit order signal bit stream the bypass input of described code stream switching equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201098675U CN201571164U (en) | 2009-07-21 | 2009-07-21 | Code stream switching device and system capable of supporting PID permutation and program recorded broadcasting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201098675U CN201571164U (en) | 2009-07-21 | 2009-07-21 | Code stream switching device and system capable of supporting PID permutation and program recorded broadcasting |
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| CN201571164U true CN201571164U (en) | 2010-09-01 |
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| CN2009201098675U Expired - Lifetime CN201571164U (en) | 2009-07-21 | 2009-07-21 | Code stream switching device and system capable of supporting PID permutation and program recorded broadcasting |
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| Country | Link |
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| CN (1) | CN201571164U (en) |
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Owner name: BEIJING BOHUI TECHNOLOGY CO., LTD. Free format text: FORMER NAME: BEIJING BOHUI SCIENCE AND TECHNOLOGY CO., LTD. |
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Address after: 100094, No. 501, No. 7, incubator building, Feng Yin Middle Road, Yongfeng industry base, Beijing, Haidian District, B Patentee after: Bo Hui Science and Technology Co., Ltd. of Beijing Address before: 100085, Beijing, Haidian District on the East Road, No. 1, building 4, 6 floor Patentee before: Beijing Bohui Technology Co., Ltd. |
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Granted publication date: 20100901 |
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