CN102811351A - Multi-service data transmission method and device - Google Patents
Multi-service data transmission method and device Download PDFInfo
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- CN102811351A CN102811351A CN201210310528XA CN201210310528A CN102811351A CN 102811351 A CN102811351 A CN 102811351A CN 201210310528X A CN201210310528X A CN 201210310528XA CN 201210310528 A CN201210310528 A CN 201210310528A CN 102811351 A CN102811351 A CN 102811351A
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Abstract
The invention is applicable for the technical field of security and protection control, and provides a multi-service data transmission method and a multi-service data transmission device. The method comprises the following steps of: receiving high-definition serial interface data; performing serial-parallel conversion on the received high-definition serial interface data to obtain parallel high-definition video data; receiving an auxiliary signal and converting the auxiliary signal into parallel auxiliary service data; replacing blanking data in the parallel high-definition video data with the parallel auxiliary service data to obtain composite parallel high-definition video data; and performing parallel-serial conversion on the composite parallel high-definition video data to obtain a high-speed serial digital signal. By the method, simultaneous transmission can be realized by blanking data with the auxiliary service data without compressing high-definition-serial digital interface (HD-SDI) high-definition video data; and on a receiving side, because only a blanking data part in an HD-SDI signal is changed, the video with the original quality can be recovered, and the implementation cost is also saved.
Description
Technical field
The invention belongs to the safety monitoring technical field, relate in particular to a kind of multi-service data transmission method and device.
Background technology
In protection and monitor field; The video monitoring technology is in fast development recent years; New solution continues to bring out; Originally receive the intense impact of high definition and two notions of compression based on the framework of SD video, occurred on the market in a large number based on the equipment of HD-SDI (high-definition digital serial line interface), these equipment can cover all spectra of video monitoring.
SDI is a kind of video interface standards system of being worked out by the SMPTE tissue, and its interface mainly is used for transmitting incompressible digital video signal, has been widely used in other relevant industries such as radio and television at present.HD-SDI satisfies SMPTE 274M standard and SMPTE 292M standard, supports the video signal transmission speed of 1.485Gb/s and 1.485/1.001Gb/s, can images resolution is 1920 * 1080 and 1280 * 720 high clear video image.
In the collection and transmission method of existing HD-SDI signal, through adopting high-definition digital video camera and the video optical multiplexer of supporting HD-SDI.The HD-SDI video optical multiplexer converts the HD-SDI high-definition video signal to light signal, transmits via optical fiber again.But the HD-SDI video optical multiplexer is a kind of simple video signal transmission equipment, itself does not have traffic transmission processing capacities such as Ethernet commonly used in the supervisory control system, data, audio frequency, alarm.Therefore, in practical application, common HD-SDI video optical multiplexer generally is applied in the more single high-resolution video transfer system, in needing the transmission of video supervisory control system during other auxiliary signal, such as 100,000,000/ten mbit ethernets, other data-signals.Audio signal.Alarm signal or the like, needing has increased the realization cost like this through the extras transmission, also is unfavorable for plant maintenance.
In order to make auxiliary signal need not independent transmission; Prior art can also adopt the network digital HD video server of supporting HD-SDI; Through the switching technology of Ethernet switch, realize the interconnected of coding side and decoding end, realize the transmission and the processing of HD video.Coding side obtains original HD video data through the HD-SDI video camera, through coding module the HD video data is encoded then, carries out Network Transmission after adopting protocol encapsulation such as TCP/IP then; After decoding end receives the packet of coding side through network; Use corresponding decoder module that decoded packet data is become the HD video data; By decoding end output, and after the protocol encapsulation such as other auxiliary signal employing TCP/IP, pass through Network Transmission simultaneously with the HD video compression data packet.After but this Ethernet encapsulation technology need be carried out compressed encoding with original non-compression high definition video data; Again encapsulate the Ethernet data bag and carry out Network Transmission; The HD video data will inevitably produce loss through behind the compressed encoding, cause problems such as video quality reduction.
Summary of the invention
In view of the above problems; The object of the present invention is to provide a kind of multi-service data transmission method; Being intended to solve have now utilizes network digital HD video server to transmit simultaneously in the technical scheme of HD-SDI signal and auxiliary signal; Need the HD video data be passed through compressed encoding, and inevitably produce loss, the technical problem that causes video quality to reduce.
From the data transmitter side, a kind of multi-service data transmission method provided by the invention comprises:
Receive high-definition digital serial line interface data;
The said high-definition digital serial line interface data that receive are gone here and there and changed, obtain parallel HD video data;
Receive auxiliary signal and convert parallel supplementary services data to;
Said parallel supplementary services data is replaced the blanking data in the said parallel HD video data, obtain compound parallel HD video data;
To said compound parallel HD video data and string conversion, obtain high-speed serial digital signal.
From the Data Receiving side, a kind of multi-service data transmission method provided by the invention comprises:
Reception comprises the high-speed serial digital signal of high-definition digital serial line interface data and supplementary services data, and through string and conversion, obtains compound parallel HD video data;
Take out supplementary services data from the blanking data division of said compound parallel HD video data, export simultaneously with remaining HD video data;
Said remaining HD video data are carried out and gone here and there conversion, obtain high-definition digital serial line interface data;
Export said high-definition digital serial line interface data;
Convert the supplementary services data of said taking-up the auxiliary signal of correspondence to according to interface standard separately, and insert in the corresponding service interface.
Another object of the present invention is to provide a kind of multi-service data transmitting device, from the data transmitter side, said device comprises:
The video access unit is used to receive high-definition digital serial line interface data;
First string and the converting unit is used for the said high-definition digital serial line interface data that receive are gone here and there and changed, and obtains parallel HD video data;
The auxiliary signal converting unit is used to receive auxiliary signal and converts parallel supplementary services data to;
The data multiplexing unit is used for said parallel supplementary services data is replaced the blanking data of said parallel HD video data, obtains compound parallel HD video data;
First parallel serial conversion unit is used for said compound parallel HD video data and string conversion are obtained high-speed serial digital signal.
From the Data Receiving side, said multi-service data transmitting device comprises:
Second string and the converting unit is used to receive the high-speed serial digital signal that comprises high-definition digital serial line interface data and supplementary services data, and through string and conversion, obtains compound parallel HD video data;
The data tapping unit is used for taking out supplementary services data from the blanking data division of said compound parallel HD video data, exports simultaneously with remaining HD video data;
Second parallel serial conversion unit is used for said remaining HD video data are carried out and gone here and there conversion, obtains high-definition digital serial line interface data;
Video output unit is used to export said high-definition digital serial line interface data;
The auxiliary signal reduction unit is used for converting the supplementary services data of said taking-up the auxiliary signal of correspondence to according to interface standard separately, and inserts in the corresponding service interface.
The invention has the beneficial effects as follows: at transmitter side, the present invention is being replaced by supplementary services data through blanking data division in the HD-SDI signal, because the blanking data are the unnecessary data in the HD-SDI signal; Therefore with not influencing video quality after the replacement of blanking partial data, video data format can not change yet, and is corresponding to receiver side; From the video data that receives, take out said supplementary services data; HD video data and supplementary services data are separated corresponding output,, therefore can restore the video of proper mass owing to only changed the blanking data division in the HD-SDI signal; Simultaneously also can obtain supplementary services data; Said supplementary services data converts corresponding auxiliary signal to and inserts in the corresponding service interface, has so far accomplished bidirectional data transmission function, utilizes the technical scheme that network digital HD video server transmits HD-SDI signal and auxiliary signal simultaneously to compare with existing; The present invention does not compress original video data, therefore can not exert an influence to video quality.
Description of drawings
Fig. 1 is the flow chart of the multi-service data transmission method that provides of first embodiment of the invention;
Fig. 2 is a kind of data flow architecture figure of parallel HD video data in the first embodiment of the invention;
Fig. 3 is the flow chart of the multi-service data transmission method that provides of second embodiment of the invention;
Fig. 4 is the flow chart of the multi-service data transmission method that provides of third embodiment of the invention;
Fig. 5 is the flow chart that fourth embodiment of the invention provides the multi-service data transmission method;
Fig. 6 is the block diagram of the multi-service data transmitting device that provides of fifth embodiment of the invention;
Fig. 7 is the block diagram of the multi-service data transmitting device that provides of sixth embodiment of the invention;
Fig. 8 is the block diagram of the multi-service data transmitting device that provides of seventh embodiment of the invention;
Fig. 9 is the block diagram of the multi-service data transmitting device that provides of eighth embodiment of the invention.
Embodiment
In order to make the object of the invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
For technical scheme of the present invention is described, describe through specific embodiment below.
Embodiment one:
Fig. 1 shows the flow process of the multi-service data transmission method that first embodiment of the invention provides, and only shows the part relevant with the embodiment of the invention for the ease of explanation.
The multi-service data transmission method that present embodiment provides comprises the steps:
Step S101, reception high-definition digital serial line interface data.
This step is obtained high-definition digital serial line interface data from the HD video equipment of supporting HD-SDI; Be HD-SDI HD video data; Said HD video equipment comprises HD video video camera or the like, and is receiving HD-SDI HD video data, anti-interference in order to improve data; Before deal with data, usually said HD-SDI HD video data transaction is become the high-speed-differential digital signal.The described HD-SDI HD video of this step data comprise the various video form, and are as shown in the table:
| Total resolution | Effective resolution | Frame frequency HZ | The serial line interface form | |
| 1 | 2200*1125p | 1920*1080p | 30 | HD-SDI |
| 2 | 2640*1125p | 1920*1080p | 25 | HD-SDI |
| 3 | 2750*1125p | 1920*1080p | 24 | HD-SDI |
| 4 | 2200*1125p | 1920*1080i | 60 | HD-SDI |
| 5 | 2650*1125p | 1920*1080i | 50 | HD-SDI |
| 6 | 1650*750p | 1280*720p | 60 | HD-SDI |
| 7 | 1980*750p | 1280*720p | 50 | HD-SDI |
Table 1
This step can identify the HD-SDI HD video data of above-mentioned various forms.
Step S102, the said high-definition digital serial line interface data that receive are gone here and there and changed, obtain parallel HD video data;
Step S103, receive auxiliary signal and convert parallel supplementary services data to.
Auxiliary signal described in this step comprises 100,000,000/ten mbit ethernets, other data-signals, audio signal, alarm signal or the like; The present invention need be transmitted these auxiliary signals and said HD-SDI HD video data in a transmission channel; For example optical fiber or cable etc. can effectively be practiced thrift cost.This step and step S101-S102 in no particular order, obtaining HD-SDI HD video data and auxiliary signal is independently to carry out.
Step S104, said parallel supplementary services data is replaced the blanking data in the said parallel HD video data, obtain compound parallel HD video data.
HD-SDI HD video data are removed outside the significant datas such as valid data, effective video initial data, effective video end data, also have unnecessary data such as other for example blanking data, and core of the present invention is; The blanking data division that supplementary services data is embedded in the HD-SDI HD video data transmits, and with reference to Fig. 2, shows a kind of data flow architecture of parallel HD video data; Comprise brightness Y stream, aberration CrCb stream, wherein; YD0-YD1919 is brightness data Y, and CRD0-CRD959 is chromatism data Cr, and CBD0-CBD959 is chromatism data Cb; YA0-YA267 is the blanking data in the Y stream, and CA0-CA267 is the blanking data among the aberration CrCb.Need not to compress former video data like this and can realize HD-SDI HD video data and supplementary services data synchronous transmission.
HD-SDI HD video data for 1.485G; Because the HD-SDI HD video data of different-format; The valid data proportion is big more, and available bandwidth is just more little, for the HD-SDI HD video data of the various forms shown in the table 1; Wherein the ratio of valid data is maximum in the HD-SDI HD video data of form shown in the 1st and the 4th; Bandwidth capable of using is minimum, if these two kinds of HD-SDI HD video data can embed the supplementary services data transmission, the HD-SDI HD video data of all forms can be accomplished this step so.Effective resolution with shown in the 1st is 1920*1080p, and frame frequency is the HD-SDI HD video data instance of 30HZ,
The blanking data number that can replace in every row is: 2200-1932=268
Horizontal blanking available bandwidth: 268*1485M/2200=180.9M
In the standard ethernet transmission course; The coded system of The data 8b/10b; The actual demand bandwidth of transmission of one line 100 m ethernet is 125M on the line; Every road HD-SDI HD video data satisfy embedding one road 100 m ethernet fully, also have remaining bandwidth can be used for transmitting business such as the less data of multichannel bandwidth demand, audio frequency, alarm.Therefore technical scheme of the present invention theoretically is practical.
Present embodiment does not limit the concrete embedded location of supplementary services data; Only needing to send and receive both sides has common cognition to get final product; The tram that the recipient can find supplementary services data to be positioned at, in addition, in the HD-SDI HD video data of different-format; The particular location of supplementary services data maybe be different, and sending and receive both sides need have common cognition to this equally.After being embedded into supplementary services data in the HD-SDI HD video data, obtain compound parallel HD video data.
Step S105, to said compound parallel HD video data and string conversion, obtain high-speed serial digital signal.
S103 is corresponding with step, need obtain high-speed serial digital signal to compound parallel HD video data and string conversion in this step.Said high-speed serial data signal can transmit in single transmission channel, such as cable, transmits in optical fiber like need, also needs said high-speed serial digital signal through electric light conversion transmission again.
Present embodiment need not to compress HD-SDI HD video data, through supplementary services data being substituted into the blanking data division, can realize transmitting simultaneously, has guaranteed video quality, has also practiced thrift the realization cost.
Embodiment two:
Fig. 3 shows the flow process of the multi-service data transmission method that second embodiment of the invention provides, and only shows the part relevant with the embodiment of the invention for the ease of explanation.
The multi-service data transmission method that present embodiment provides comprises the steps:
Step S301, reception high-definition digital serial line interface data;
Step S302, the said high-definition digital serial line interface data that receive are gone here and there and changed, obtain parallel HD video data.
Step S101-S102 is identical among above-mentioned steps S301-S302 and the embodiment one, repeats no more here.
Step S303, the said parallel HD video data format of detection also are cached in the memory, take out the parallel HD video data through adjusting in the memory through local clock.
In embodiment one; In the time of with HD-SDI HD video serial data and conversion; The completion audio video synchronization detects; This moment, the reference clock of HD video recovered to come out from video, can produce different shakes and frequency departure because of the difference in HD video source, caused video data in processing and transmission course, destabilizing factor to occur.Therefore, in this step, at first the said HD video data that walk abreast of looking are carried out format detection; The HD video writing data into memory that under the reference clock of HD video, will walk abreast then, memory described here is preferably SDRAM (Synchronous Dynamic Random Access Memory, synchronous DRAM); Read by local clock again; Just accomplished the clock switching this moment, guaranteed the stability of clock, in processing procedure, accomplishes the frequency deviation adjustment of reading and writing data simultaneously.
Step S304, receive auxiliary signal and convert parallel supplementary services data to;
Step S305, said parallel supplementary services data is replaced the blanking data in the said parallel HD video data, obtain compound parallel HD video data;
Step S306, to said compound parallel HD video data and string conversion, obtain high-speed serial digital signal.
Step S103-S105 is identical among above-mentioned steps S304-S306 and the embodiment one, repeats no more here.
Step S307, said high-speed serial digital signal is accomplished the electric light conversion and sent to optical fiber link.
In the present embodiment; After obtaining high-speed serial digital signal; Need said data be sent in the optical fiber and transmit, this step can realize that said high-speed serial digital signal is a high-speed differential signal through optical module; Output on the optical fiber link after converting said high-speed differential signal to light signal, accomplish the multi-service data transmission of transmitting terminal.
Present embodiment is on the basis of embodiment one; Increased parallel HD video metadata cache step; After being written in the memory through reference clock said parallel HD video data; Through local clock it is read out,, the chaotic phenomenon of video Data Transmission can not occur because local clock stability is very high.
The foregoing description one has been described multi-service data transmission method provided by the invention with embodiment two from the data transmitter side, continues describe provided by the invention multi-service data transmission method with embodiment four from the Data Receiving side through enforcement three below.
Embodiment three:
Fig. 4 shows the flow process of the multi-service data transmission method that third embodiment of the invention provides, and only shows the part relevant with the embodiment of the invention for the ease of explanation.
The multi-service data transmission method that present embodiment provides comprises the steps:
Step S401, reception comprise the high-speed serial digital signal of high-definition digital serial line interface data and supplementary services data, and through string and conversion, obtain compound parallel HD video data.
Present embodiment is described the multi-service data transmission method from the Data Receiving side, at the data transmitter side, shown in embodiment one; After obtaining high-speed serial digital signal; Said high-speed serial digital signal comprises HD-SDI HD video data and supplementary services data, and is in this step, corresponding with step S105 among the embodiment one; Through string and conversion, obtain said compound parallel HD video data.
Step S402, take out supplementary services data, export simultaneously with remaining HD video data from the blanking data division of said compound parallel HD video data.
Because in recipient and the HD-SDI data of transmit leg to different-format; There is common cognition the position of supplementary services data; Therefore; Present embodiment can take out said supplementary services data according to the position of supplementary services data in the blanking data division of acquiescence, comprises 100,000,000/ten mbit ethernets, other data-signals, audio signal, service alarm signal or the like.
Step S403, said remaining HD video data are carried out and gone here and there conversion, obtain high-definition digital serial line interface data;
Step S404, the said high-definition digital serial line interface data of output;
Step S405, convert the supplementary services data of said taking-up to corresponding auxiliary signal according to separately interface standard, and insert in the corresponding service interface.
After taking out supplementary services data; Directly said supplementary services data is reduced into the auxiliary signal of correspondence according to interface standard separately; And insert in the corresponding service interface, with remaining HD video serial data and conversion, be reduced into HD-SDI HD video data simultaneously; Owing to just changed the blanking data division in the HD-SDI HD video data, therefore can not impact to video quality.Simultaneously, the order of step S403, S404 and step S405 is not limited here.
Embodiment four:
Fig. 5 shows the flow process of the multi-service data transmission method that fourth embodiment of the invention provides, and only shows the part relevant with the embodiment of the invention for the ease of explanation.
The multi-service data transmission method that present embodiment provides comprises the steps:
Step S501, from optical fiber link, receive the light signal comprise high-definition digital serial line interface data and supplementary services data, and obtain high-speed serial digital signal through after the opto-electronic conversion;
Step S502, reception comprise the high-speed serial digital signal of high-definition digital serial line interface data and supplementary services data, and through string and conversion, obtain compound parallel HD video data;
Step S503, take out supplementary services data, export simultaneously with remaining HD video data from the blanking data division of said compound parallel HD video data;
Step S504, said remaining HD video data are carried out and gone here and there conversion, obtain high-definition digital serial line interface data;
Step S505, the said high-definition digital serial line interface data of output;
Step S506, convert the supplementary services data of said taking-up to corresponding auxiliary signal according to separately interface standard, and insert in the corresponding service interface.
Present embodiment has increased step S501 on the basis of embodiment three; Among the embodiment two, with sending to optical fiber link after the conversion of said high-speed serial digital signal completion electric light, said high-definition digital serial line interface data and supplementary services data are transmitted in optical fiber with the form of light signal; Therefore in order to receive said light signal; Present embodiment receives behind the said light signal through opto-electronic conversion in step S501, is reduced into the signal of telecommunication that comprises high-definition digital serial line interface data and supplementary services data; It is high-speed serial digital signal; Subsequent step S502-S506 carries out subsequent treatment to said high-speed serial digital signal, and step S401-S405 is identical among said step S502-S506 and the embodiment one, repeats no more here.
Embodiment five:
Fig. 6 shows the block diagram of the multi-service data transmitting device that fifth embodiment of the invention provides, and only shows the part relevant with the embodiment of the invention for the ease of explanation.
As shown in Figure 6, the multi-service data transmitting device that present embodiment provides comprises:
First string and the converting unit 602 is used for the said high-definition digital serial line interface data that receive are gone here and there and changed, and obtains parallel HD video data;
Auxiliary signal converting unit 603 is used to receive auxiliary signal and converts parallel supplementary services data to;
First parallel serial conversion unit 605 is used for said compound parallel HD video data and string conversion are obtained high-speed serial digital signal.
Each functional unit 601-605 correspondence that present embodiment provides has realized step S101-S105 among the embodiment one; When concrete the realization; Said video access unit 601 can be realized by the balanced chip of HD-SDI HD video special circuit; Said line conditioning chip is connected to the HD video source through 75 ohm coaxial cable; Said first string and converting unit 602 can be realized by the special-purpose SERDES chip of HD-SDI HD video, are perhaps realized by the FPGA that is integrated with the special-purpose SERDES of HD-SDI HD video, such as with the serial XC6SLX45T-3FGG484C chip of the Spartan6E of Xilinx company; Said auxiliary signal converting unit 603, data multiplexing unit 604, first parallel serial conversion unit 605 can be realized by FPGA, and same wherein said first parallel serial conversion unit 605 also can be realized by SERDES chip independently.
The multi-service data transmitting device that present embodiment provides can be realized transmitting simultaneously through supplementary services data being substituted into the blanking data division, has guaranteed video quality, has also practiced thrift the realization cost.
Embodiment six:
Fig. 7 shows the block diagram of the multi-service data transmitting device that sixth embodiment of the invention provides, and only shows the part relevant with the embodiment of the invention for the ease of explanation.
As shown in Figure 7, the multi-service data transmitting device that present embodiment provides comprises:
First string and the converting unit 702 is used for the said high-definition digital serial line interface data that receive are gone here and there and changed, and obtains parallel HD video data;
Data Detection buffer unit 703 is used for detecting said parallel HD video data format and is cached to memory, takes out the parallel HD video data through adjusting in the memory through local clock;
Auxiliary signal converting unit 704 is used to receive auxiliary signal and converts parallel supplementary services data to;
First parallel serial conversion unit 706 is used for said compound parallel HD video data and string conversion are obtained high-speed serial digital signal.
Each functional unit correspondence that present embodiment provides has realized the step S301-S307 among the embodiment two; From another point of view; Present embodiment is on the basis of embodiment five; Increased Data Detection buffer unit 703 and electrooptic switching element 707, said Data Detection buffer unit 703 can realize that said electrooptic switching element 707 can be realized by the 1.5G optical module by memory and peripheral read-write control circuit.Present embodiment reads out it through local clock after being written in the memory through reference clock said parallel HD video data, because local clock stability is very high, the chaotic phenomenon of video Data Transmission can not occur.
Present embodiment has realized from the HD video source, obtaining HD-SDI HD video data and blanking data division therein embeds supplementary services data, and sends in the optical fiber link and transmit.
The foregoing description five and embodiment six have described the structure of multi-service data transmitting device provided by the invention from the data transmitter side, continue to describe the structure of multi-service data transmitting device provided by the invention below from the Data Receiving side through embodiment seven and embodiment eight.
Embodiment seven:
Fig. 8 shows the block diagram of the multi-service data transmitting device that seventh embodiment of the invention provides, and only shows the part relevant with the embodiment of the invention for the ease of explanation.
As shown in Figure 8, the multi-service data transmitting device that present embodiment provides comprises:
Second string and the converting unit 801 is used to receive the high-speed serial digital signal that comprises high-definition digital serial line interface data and supplementary services data, and through string and conversion, obtains compound parallel HD video data;
Second parallel serial conversion unit 803 is used for said remaining HD video data are carried out and gone here and there conversion, obtains high-definition digital serial line interface data;
Auxiliary signal reduction unit 805 is used for converting the supplementary services data of said taking-up the auxiliary signal of correspondence to according to interface standard separately, and inserts in the corresponding service interface.
Each functional unit 801-805 correspondence that present embodiment provides has realized step S401-S405 among the embodiment three; When concrete the realization; Said second string and converting unit 801, data tapping unit 802, second parallel serial conversion unit 803, auxiliary signal reduction unit 805 can be realized by the FPGA that is integrated with the special-purpose SERDES of HD-SDI HD video; Such as the serial XC6SLX45T-3FGG484C chip of the Spartan6E of Xilinx company; Equally; Second string wherein and converting unit 801 and second parallel serial conversion unit 803 also can be by independently SERDES chip realizations, and said video output unit 804 can realize that said chip for driving is connected on the HD video receiving equipment through 75 ohm coaxial cable by HD-SDI HD video special driving chip.
Embodiment eight:
Fig. 9 shows the block diagram of the multi-service data transmitting device that eighth embodiment of the invention provides, and only shows the part relevant with the embodiment of the invention for the ease of explanation.
As shown in Figure 9; The multi-service data transmitting device that present embodiment provides also comprises except comprising described second string of embodiment seven and converting unit 902, data tapping unit 903, second parallel serial conversion unit 904, video output unit 905, auxiliary signal reduction unit 906:
Each functional unit 901-906 correspondence that present embodiment provides has realized step S501-S506 among the embodiment four, and on the other hand, present embodiment is on the basis of embodiment seven; Increased photoelectric conversion unit 901; Present embodiment has considered that high-definition digital serial line interface data and supplementary services data possibly transmit in fiber links, therefore, and when realizing present embodiment; Need carry out opto-electronic conversion, said photoelectric conversion unit 901 can be realized by the 1.5G optical module.
Present embodiment is real to obtain the light signal that includes high-definition digital serial line interface data and supplementary services data from optical fiber link; And therefrom take out supplementary services data through the conversion after be linked into corresponding business interface; Remaining HD video data show on the HD video receiving equipment; Because data are not compressed, the picture quality that therefore demonstrates is unaffected.
One of ordinary skill in the art will appreciate that; Realize that all or part of step in the foregoing description method is to instruct relevant hardware to accomplish through program; Described program can be in being stored in a computer read/write memory medium; Described storage medium is like ROM/RAM, disk, CD etc.
The above is merely preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of within spirit of the present invention and principle, being done, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a multi-service data transmission method is characterized in that, said method comprises:
Receive high-definition digital serial line interface data;
The said high-definition digital serial line interface data that receive are gone here and there and changed, obtain parallel HD video data;
Receive auxiliary signal and convert parallel supplementary services data to;
Said parallel supplementary services data is replaced the blanking data in the said parallel HD video data, obtain compound parallel HD video data;
To said compound parallel HD video data and string conversion, obtain high-speed serial digital signal.
2. method according to claim 1 is characterized in that, the said high-definition digital serial line interface data that receive are gone here and there and changed, and obtains also comprising after the parallel HD video data step:
Detect said parallel HD video data format and be cached in the memory, take out in the memory parallel HD video data through adjustment through local clock.
3. method according to claim 1 or claim 2 is characterized in that, to said compound parallel HD video data and string conversion, obtains also comprising after the high-speed serial digital signal step:
Said high-speed serial digital signal is accomplished the electric light conversion and sent to optical fiber link.
4. a multi-service data transmission method is characterized in that, said method comprises:
Reception comprises the high-speed serial digital signal of high-definition digital serial line interface data and supplementary services data, and through string and conversion, obtains compound parallel HD video data;
Take out supplementary services data from the blanking data division of said compound parallel HD video data, export simultaneously with remaining HD video data;
Said remaining HD video data are carried out and gone here and there conversion, obtain high-definition digital serial line interface data;
Export said high-definition digital serial line interface data;
Convert the supplementary services data of said taking-up the auxiliary signal of correspondence to according to interface standard separately, and insert in the corresponding service interface.
5. like the said method of claim 4, it is characterized in that said reception comprises the high-speed serial digital signal of high-definition digital serial line interface data and supplementary services data, and, obtain also comprising before the compound parallel HD video data step through string and conversion;
From optical fiber link, receive the light signal that comprises high-definition digital serial line interface data and supplementary services data, and obtain high-speed serial digital signal through after the opto-electronic conversion.
6. a multi-service data transmitting device is characterized in that, said device comprises:
The video access unit is used to receive high-definition digital serial line interface data;
First string and the converting unit is used for the said high-definition digital serial line interface data that receive are gone here and there and changed, and obtains parallel HD video data;
The auxiliary signal converting unit is used to receive auxiliary signal and converts parallel supplementary services data to;
The data multiplexing unit is used for said parallel supplementary services data is replaced the blanking data of said parallel HD video data, obtains compound parallel HD video data;
First parallel serial conversion unit is used for said compound parallel HD video data and string conversion are obtained high-speed serial digital signal.
7. like the said device of claim 6, it is characterized in that said device also comprises:
The Data Detection buffer unit is used for detecting said parallel HD video data format and is cached to memory, takes out the parallel HD video data through adjusting in the memory through local clock.
8. like claim 6 or 7 said devices, it is characterized in that said device also comprises:
Electrooptic switching element is used for said high-speed serial digital signal is accomplished the electric light conversion and sent to optical fiber link.
9. a multi-service data transmitting device is characterized in that, said device comprises:
Second string and the converting unit is used to receive the high-speed serial digital signal that comprises high-definition digital serial line interface data and supplementary services data, and through string and conversion, obtains compound parallel HD video data;
The data tapping unit is used for taking out supplementary services data from the blanking data division of said compound parallel HD video data, exports simultaneously with remaining HD video data;
Second parallel serial conversion unit is used for said remaining HD video data are carried out and gone here and there conversion, obtains high-definition digital serial line interface data;
Video output unit is used to export said high-definition digital serial line interface data;
The auxiliary signal reduction unit is used for converting the supplementary services data of said taking-up the auxiliary signal of correspondence to according to interface standard separately, and inserts in the corresponding service interface.
10. like the said device of claim 9, it is characterized in that said device also comprises:
Photoelectric conversion unit is used for receiving the light signal that comprises high-definition digital serial line interface data and supplementary services data from optical fiber link, and obtains high-speed serial digital signal through after the opto-electronic conversion.
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