CN101867765A - Data transmission method and system - Google Patents
Data transmission method and system Download PDFInfo
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- CN101867765A CN101867765A CN 201010160767 CN201010160767A CN101867765A CN 101867765 A CN101867765 A CN 101867765A CN 201010160767 CN201010160767 CN 201010160767 CN 201010160767 A CN201010160767 A CN 201010160767A CN 101867765 A CN101867765 A CN 101867765A
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Abstract
The invention discloses a data transmission method, which comprises the following steps that: a sending end sends lossless compressed static video data to a receiving end; and the receiving end decompresses the received lossless compressed static video data, and outputting the decompressed static video data. The method can view details of the high-resolution static video data.
Description
Technical field
The present invention relates to communication technical field, particularly relate to a kind of transmission method and system of data.
Background technology
Along with the development of video technique, video conference terminal has been widely used in the every profession and trade, and except traditional conference applications scene, video conference terminal has progressed into medical treatment, in the industries such as building.In industries such as medical treatment, resolution and image restoring effect there are harsh requirement, and the difficult demand that satisfies industries such as medical treatment of traditional video conferencing system.
For example, in the support of resolution, current most of video conferencing system is merely able to support 1920 * 1080, and for industries such as medical treatment, on the demand of resolution, may need to reach QUXGA (3200 * 2400), and these application major parts are static video data (for example, electron microscope image, X-ray film, architectural drawings etc.).
Because static video data is had relatively high expectations to the image fidelity, traditional video conference terminal can't satisfy the demand of static video data to the compression of static video data.
In the prior art, can adopt image segmentation that static video data is handled.This image segmentation is specially: support the static video data of resolution to cut apart to surpassing, make each piece static video data all less than the supporting rate of existing equipment, and the burst static video data that receives is recombinated, thereby finish the transmission of super large resolution static video data at receiving terminal.
But, in the process of using image segmentation that static video data is handled, can there be the damage of static video data, i.e. same existence of static video data damage that compression is introduced, can't satisfy the particular demands of some industry.For example, for industries such as medical treatment, require the harmless transmission of static video data, and can't realize harmless transmission in the prior art static video data.
Summary of the invention
The invention provides a kind of transmission method and system of data, can't harm transmission with static video data, and satisfy specific industry super large resolution static video data is carried out undistorted transmission requirements the arbitrary resolution that increases on the existing video conference basis.
In order to achieve the above object, the present invention proposes a kind of transmission method of data, be applied to comprise in the video conferencing system of transmitting terminal and receiving terminal, said method comprising the steps of:
Described transmitting terminal carries out lossless compress according to lossless data compression algorithms to static video data;
The static video data of described transmitting terminal after with lossless compress sends to described receiving terminal;
Static video data after the described lossless compress that described receiving terminal decompression receives, and the static video data after the output decompression.
Preferably, described transmitting terminal carries out lossless compress according to lossless data compression algorithms to static video data, also comprises before:
Described transmitting terminal sends the request message of the static video data of arbitrary resolution to described receiving terminal;
Described receiving terminal returns the response message of the static video data of described arbitrary resolution to described transmitting terminal;
Described transmitting terminal is determined need be to the static video data after described receiving terminal sends lossless compress, and stops to send current video data to described receiving terminal.
Preferably, described transmitting terminal also comprises to the request message of the static video data of described receiving terminal transmission arbitrary resolution before:
Described transmitting terminal receives the static video data of arbitrary resolution by video interface; Perhaps, described transmitting terminal obtains the static video data of arbitrary resolution from video equipment.
Preferably, the static video data after described receiving terminal output decompresses specifically comprises:
Static video data after described receiving terminal will decompress is rebuild, and static video data can't harm output after will rebuilding on display device.
Preferably, described receiving terminal will be rebuild the back static video data and can't harm output on display device, specifically comprise:
When the resolution of described display device during less than described resolution of rebuilding the back static video data, described receiving terminal carries out part output with described reconstructions back static video data, to show the details of static video data after described the reconstruction on described display device.
The present invention also provides a kind of transmission system of data, comprises transmitting terminal and receiving terminal, wherein,
Described transmitting terminal is used for according to lossless data compression algorithms static video data being carried out lossless compress; And the static video data after the lossless compress sent to described receiving terminal;
Described receiving terminal, the static video data after the described lossless compress that receives that is used to decompress, and the static video data after the output decompression.
Preferably, described transmitting terminal also is used for the request message to the static video data of described receiving terminal transmission arbitrary resolution; And when the response message of the static video data that receives described arbitrary resolution, determining need be to the static video data after described receiving terminal sends lossless compress, and stops to send current video data to described receiving terminal;
Described receiving terminal also is used for returning to described transmitting terminal the response message of the static video data of described arbitrary resolution.
Preferably, also be used for receiving the static video data of arbitrary resolution by video interface; Perhaps,
Obtain the static video data of arbitrary resolution from video equipment.
Preferably, described receiving terminal also be used for the static video data after decompressing is rebuild, and static video data can't harm output after will rebuilding on display device.
Preferably, described receiving terminal, also be used for described reconstructions back static video data being carried out part output, on described display device, to show the details of static video data after described the reconstruction when the resolution of described display device during less than described resolution of rebuilding the back static video data.
Compared with prior art, the present invention has the following advantages:
The static video data of transmission arbitrary resolution in existing meeting, and can in existing meeting, transmit harmless static video data, for providing, equipment exceeds the image effect that the common conference video system can provide; And under the situation of display device lack of resolution,, can check the details of the static video data of high-resolution by using the camera control operation.
Description of drawings
Fig. 1 is the transmission method flow chart of a kind of data of the present invention's proposition;
Fig. 2 is the transmission method flow chart of a kind of data of proposition under a kind of application scenarios of the present invention;
The schematic diagram that the details that Fig. 3 proposes down for application scenarios of the present invention shows;
Fig. 4 is the structure chart of the transmission system of a kind of data of the present invention's proposition.
Embodiment
A kind of transmission method of data is provided among the present invention, is applied to comprise that in the video conferencing system of transmitting terminal and receiving terminal, as shown in Figure 1, this method may further comprise the steps:
For technical scheme provided by the invention more clearly is described,, technical scheme provided by the invention is described in detail below in conjunction with a kind of concrete application scenarios.For the very high application of resolution requirement (for example, industries such as medical treatment, building), traditional video conferencing system difficulty satisfy the demands, in view of the situation, the invention provides a kind of transmission method of data, be applied in the video conferencing system that comprises transmitting terminal and receiving terminal, this video conferencing system is the system very high to resolution requirement, for example, at the video conferencing system of industries such as medical treatment, building.Should be with under the scene, this transmitting terminal is that example describes with terminal A, this receiving terminal with terminal B.Certainly, in actual applications, this transmitting terminal also can be terminal B, and this receiving terminal also can be terminal A.
Based on above-mentioned situation, as shown in Figure 2, the transmission method of these data further may further comprise the steps:
Step 201, terminal A determines to send to terminal B the static video data of arbitrary resolution.
Concrete, when terminal A need be by the static video data of existing video interface reception arbitrary resolution; Perhaps, terminal A need be from video equipment (being external video equipment) when getting access to the static video data of arbitrary resolution, and this terminal A determines to send to terminal B the static video data of arbitrary resolution.Wherein, this video equipment includes but not limited to scanner, camera, medical electronics or miscellaneous equipment etc., and the static video data of this arbitrary resolution can be the digitized image of arbitrary resolution.In addition, this terminal A can get access to the static video data of arbitrary resolution from the video equipment with interface (for example, USB interface) connection.
Should be with under the scene, in video conferencing system, terminal A and terminal B can send normal video data, and this normal video data is the video data to resolution requirements lower (for example, 1920 * 1080).
In this process, if terminal A need be by the static video data of existing video interface input arbitrary resolution; Perhaps, terminal A need be by existing video interface when video equipment gets access to the static video data of arbitrary resolution, and then this terminal A determines to send to terminal B the static video data of arbitrary resolution.
Step 202, terminal A sends the request message of the static video data of arbitrary resolution to terminal B.
Concrete, before terminal A sends the static video data of arbitrary resolution to terminal B, need between terminal A and terminal B, hold consultation, can transmit the static video data of arbitrary resolution to guarantee terminal A and terminal B.
Step 203, terminal B sends the response message of the static video data of arbitrary resolution to terminal A.
Concrete, receive the request message of static video data of arbitrary resolution as terminal B after, know that terminal A need be to the static video data that self sends arbitrary resolution, at this moment, this terminal B will prepare the static video data that reception comes the arbitrary resolution of self terminal A.
Step 204, terminal A stops to send normal video data to terminal B.
After the response message of the static video data that receives the arbitrary resolution that terminal B returns, negotiations process between terminal A and the terminal B is finished, terminal A determines to send to terminal B the static video data of arbitrary resolution, at this moment, terminal A need stop to send normal video data to terminal B.
Step 205, terminal A carries out lossless compress according to lossless data compression algorithms to the static video data of arbitrary resolution.
Concrete, when the static video data that gets access to arbitrary resolution (is the static video data of the arbitrary resolution that terminal A imports by existing video interface in the step 201; Perhaps, the static video data of the arbitrary resolution that terminal A gets access to from video equipment by existing video interface) after, because should be with scene at industries such as medical treatment, buildings, requirement to resolution is very high, then this arbitrary resolution is very high resolution (for example, 3200 * 2400).For convenience of description, should represent the static video data of arbitrary resolution in the subsequent process with static video data with under the scene.
And, should need carry out lossless compress to static video data according to lossless data compression algorithms with under the scene because industries such as medical treatment, building are very high to the requirement of details, do not lose any details to guarantee static video data.
In addition, should be with under the scene, this lossless compress be meant the compression without any loss, perhaps in the lossy compression method of accepting within the scope, describes with the boil down to example without any loss among the present invention.
Need to prove that this lossless data compression algorithms includes but not limited to the LZ77 algorithm,, promptly can guarantee static video data is carried out lossless compress by using this LZ77 algorithm.Certainly, in actual applications, be not limited to the LZ77 algorithm, all can guarantee static video data is carried out the algorithm of lossless compress all within protection range of the present invention.
Step 206, the static video data of terminal A after with lossless compress sends to terminal B.
Step 207, the static video data after the lossless compress that terminal B decompression receives, and the static video data after the output decompression.
Concrete, after the static video data after the lossless compress that receives self terminal A, this terminal B static video data after this lossless compress that need decompress, and the static video data after will decompressing is rebuild.For example, terminal A becomes 3 parts (static video data 1, static video data 2 and static video data 3) with the static video data lossless compress, can decompress out static video data 1, static video data 2 and static video data 3 of terminal B then, at this moment, this terminal B need be reconstructed into complete static video data with static video data 1, static video data 2 and static video data 3.
Further, this terminal B need be with display device (be the external equipment of terminal B) the enterprising line output of the static video data after rebuilding in terminal B correspondence.
It should be noted that this terminal B can carry out one to one harmless output to the static video data after rebuilding on the display device.In actual applications, if during the lack of resolution of this display device, terminal B can also show thumbnail, and finishes one to one harmless output to the static video data after rebuilding by the image amplifieroperation.
Should be with under the scene, terminal B can also control current camera (external equipment of terminal B), thus the camera of operating terminal A.
Concrete, under normal circumstances, terminal B can pass through the operation to this equipment camera, and by FECC (Far End Camera Control, remote camera control) come the camera of operating terminal A, thus finish amplification, dwindle terminal A camera, up and down, about etc. operation.
In addition, under image display mode, when the resolution of display device during less than the resolution of the static video data after rebuilding, terminal B can also carry out the static video data after the complete reconstruction part output, with the details of the static video data after showing this reconstruction on the display device.At this moment, terminal B can be moving of display buffer with the upper and lower, left and right operation map to this equipment camera, as shown in Figure 3, terminal B is by carrying out operations such as zoom distance to this equipment camera, and can be the amplification in the display buffer with this operation map and situation such as dwindle, thereby show the details of the static video data after this reconstruction.
Should be with under the scene, after the static video data output after decompressing was finished, terminal B can be to terminal request static video data next time.For example, terminal B will be page turn over operation to the HOME operation map of this equipment, to A request static video data next time.
At this moment, terminal A need continue according to lossless data compression algorithms the static video data of next time arbitrary resolution to be carried out lossless compress, and continues to carry out subsequent step, gives unnecessary details no longer in detail among the present invention.
Step 208, terminal A sends normal video data to terminal B again.
Concrete, initiate to stop the operation of static video data of arbitrary resolution as terminal A or terminal B after, terminal A needs send normal video data to terminal B again.
It should be noted that, at terminal A again before terminal B sends normal video data, terminal A also needs to notify terminal B need receive normal video data, and terminal A can send normal video data to terminal B afterwards, and this terminal B also can receive normal video data.
Need to prove, above-mentioned processing procedure is for the main flow video (generally being used to transmit conference scenario) in existing video conference, and for auxilliary stream video (generally being used for DVD broadcast, PPT film), can use above-mentioned handling process equally, promptly can on auxilliary stream, adopt similar techniques, give unnecessary details no longer in detail in the embodiment of the invention.
Wherein, the order between each step among the present invention can also be adjusted according to actual needs.
Based on the inventive concept same with said method, the invention allows for a kind of transmission system of data, as shown in Figure 4, comprise transmitting terminal 10 and receiving terminal 20, wherein,
Described transmitting terminal 10 is used for according to lossless data compression algorithms static video data being carried out lossless compress; And the static video data after the lossless compress sent to described receiving terminal 20.
Described receiving terminal 20, the static video data after the described lossless compress that receives that is used to decompress, and the static video data after the output decompression.
Among the present invention, described transmitting terminal 10 also is used for the request message to the static video data of described receiving terminal 20 transmission arbitrary resolutions; And when the response message of the static video data that receives described arbitrary resolution, determining need be to the static video data after described receiving terminal 20 sends lossless compress, and stops to send current video data to described receiving terminal;
Described receiving terminal 20 also is used for returning to described transmitting terminal 10 response message of the static video data of described arbitrary resolution.
Further, described transmitting terminal 10 also is used for the static video data by video interface reception arbitrary resolution; Perhaps, obtain the static video data of arbitrary resolution from video equipment.
In addition, described receiving terminal 20 also be used for the static video data after decompressing is rebuild, and static video data can't harm output after will rebuilding on display device.
Further, described receiving terminal 20, also be used for described reconstructions back static video data being carried out part output, on described display device, to show the details of static video data after described the reconstruction when the resolution of described display device during less than described resolution of rebuilding the back static video data.
Wherein, each module of apparatus of the present invention can be integrated in one, and also can separate deployment.Above-mentioned module can be merged into a module, also can further split into a plurality of submodules.
Through the above description of the embodiments, those skilled in the art can be well understood to the present invention and can realize by hardware, also can realize by the mode that software adds necessary general hardware platform.Based on such understanding, technical scheme of the present invention can embody with the form of software product, it (can be CD-ROM that this software product can be stored in a non-volatile memory medium, USB flash disk, portable hard drive etc.) in, comprise some instructions with so that computer equipment (can be personal computer, server, the perhaps network equipment etc.) carry out the described method of each embodiment of the present invention.
It will be appreciated by those skilled in the art that accompanying drawing is the schematic diagram of a preferred embodiment, module in the accompanying drawing or flow process might not be that enforcement the present invention is necessary.
It will be appreciated by those skilled in the art that the module in the device among the embodiment can be distributed in the device of embodiment according to the embodiment description, also can carry out respective change and be arranged in the one or more devices that are different from present embodiment.The module of the foregoing description can be merged into a module, also can further split into a plurality of submodules.
The invention described above sequence number is not represented the quality of embodiment just to description.
More than disclosed only be several specific embodiment of the present invention, still, the present invention is not limited thereto, any those skilled in the art can think variation all should fall into protection scope of the present invention.
Claims (10)
1. the transmission method of data is applied to comprise in the video conferencing system of transmitting terminal and receiving terminal, it is characterized in that, said method comprising the steps of:
Described transmitting terminal carries out lossless compress according to lossless data compression algorithms to static video data;
The static video data of described transmitting terminal after with lossless compress sends to described receiving terminal;
Static video data after the described lossless compress that described receiving terminal decompression receives, and the static video data after the output decompression.
2. the method for claim 1 is characterized in that, described transmitting terminal carries out lossless compress according to lossless data compression algorithms to static video data, also comprises before:
Described transmitting terminal sends the request message of the static video data of arbitrary resolution to described receiving terminal;
Described receiving terminal returns the response message of the static video data of described arbitrary resolution to described transmitting terminal;
Described transmitting terminal is determined need be to the static video data after described receiving terminal sends lossless compress, and stops to send current video data to described receiving terminal.
3. method as claimed in claim 2 is characterized in that, described transmitting terminal also comprises to the request message of the static video data of described receiving terminal transmission arbitrary resolution before:
Described transmitting terminal receives the static video data of arbitrary resolution by video interface; Perhaps, described transmitting terminal obtains the static video data of arbitrary resolution from video equipment.
4. the method for claim 1 is characterized in that, the static video data after described receiving terminal output decompresses specifically comprises:
Static video data after described receiving terminal will decompress is rebuild, and static video data can't harm output after will rebuilding on display device.
5. method as claimed in claim 4 is characterized in that, described receiving terminal will be rebuild the back static video data and can't harm output on display device, specifically comprise:
When the resolution of described display device during less than described resolution of rebuilding the back static video data, described receiving terminal carries out part output with described reconstructions back static video data, to show the details of static video data after described the reconstruction on described display device.
6. the transmission system of data is characterized in that, comprises transmitting terminal and receiving terminal, wherein,
Described transmitting terminal is used for according to lossless data compression algorithms static video data being carried out lossless compress; And the static video data after the lossless compress sent to described receiving terminal;
Described receiving terminal, the static video data after the described lossless compress that receives that is used to decompress, and the static video data after the output decompression.
7. system as claimed in claim 6 is characterized in that,
Described transmitting terminal also is used for the request message to the static video data of described receiving terminal transmission arbitrary resolution; And when the response message of the static video data that receives described arbitrary resolution, determining need be to the static video data after described receiving terminal sends lossless compress, and stops to send current video data to described receiving terminal;
Described receiving terminal also is used for returning to described transmitting terminal the response message of the static video data of described arbitrary resolution.
8. system as claimed in claim 7 is characterized in that,
Described transmitting terminal also is used for the static video data by video interface reception arbitrary resolution; Perhaps,
Obtain the static video data of arbitrary resolution from video equipment.
9. system as claimed in claim 6 is characterized in that,
Described receiving terminal also be used for the static video data after decompressing is rebuild, and static video data can't harm output after will rebuilding on display device.
10. system as claimed in claim 9 is characterized in that,
Described receiving terminal, also be used for when the resolution of described display device during less than described resolution of rebuilding the back static video data, described reconstruction back static video data is carried out part output, on described display device, to show described details of rebuilding the back static video data.
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| CN 201010160767 CN101867765A (en) | 2010-04-30 | 2010-04-30 | Data transmission method and system |
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| CN 201010160767 CN101867765A (en) | 2010-04-30 | 2010-04-30 | Data transmission method and system |
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Cited By (1)
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| CN107181928A (en) * | 2017-07-21 | 2017-09-19 | 苏睿 | Conference system and data transmission method |
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