CN101141614B - Session television terminal video parameter remote adjusting method - Google Patents
Session television terminal video parameter remote adjusting method Download PDFInfo
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- CN101141614B CN101141614B CN2007101759512A CN200710175951A CN101141614B CN 101141614 B CN101141614 B CN 101141614B CN 2007101759512 A CN2007101759512 A CN 2007101759512A CN 200710175951 A CN200710175951 A CN 200710175951A CN 101141614 B CN101141614 B CN 101141614B
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Abstract
The present invention discloses a method for the remote adjustment of the video parameters of a conference television terminal. Through the expansion of a massage of a far end camera control (FECC), a video parameter adjustment request message is increased in the massage, and the adjustment of the remote video parameters such as brightness, chromaticity, and saturation degree, etc. is realized. A low speed data (LSD) channel of the conference television terminal is opened, a controlling party terminal and a controlled party terminal see the other party mutually, under the mode that the terminal is connected into a multimedia interactive platform (MCU), and after the MCU in controlling direction apply and obtain a LSD token, the controlling party transmits the parameter massages of an adjustment video to the controlled party through the MCU to adjust the video parameters; the terminal does not need the LSD token under the mode of point to point, but the controlling party directly transmits the parameter massages of the adjustment video to the controlled party, and at this moment the controlled party terminal receives the video parameter value sent by the controlling party terminal to complete the adjustment of the video parameters.
Description
Technical field
The present invention relates to the communication technology of TV conference system, relate in particular to the remote distance regualting method of video conference terminal video parameter.
Background technology
In TV conference system, the video parameter in local meeting-place can only be adjusted by the local terminal, and the adjustment of other meeting-place video parameter also can only be implemented in the meeting-place at camera place side, and can not pass through the long-range realization of TV conference system.
In the video conferencing of reality is used, often need to adjust the main meeting-place used in the video conference or the video parameter of sub-venue, the video pictures of main meeting-place clearly or sub-venue improves meeting live view quality and laser propagation effect, so that can be seen in other meeting-place.Common way is like this: regulate the local terminal if desired, just directly adjust the video parameter in meeting-place, place; Regulate the video conference terminal in other meeting-place if desired, then far need the operating personnel in the meeting-place of adjusting, by the video parameter in meeting-place, corresponding operating personnel adjustment place by operating personnel's Advise By Wire in meeting-place.
Obviously, there is following defective in said method: operating personnel could adjust the video parameter in local meeting-place only in the video conference terminal side at self place; Adjust the remote site video parameter if desired, also must cooperate just and can finish by the far-end operation personnel.
Summary of the invention
In view of this, main purpose of the present invention is to provide the method for the long-range adjustment video parameter of a kind of video conference terminal, can not Long-distance Control and the problem of adjusting other meeting-place video conference terminal video parameters to solve present TV conference system.
For achieving the above object, technical scheme of the present invention is achieved in that
The method of the long-range adjustment video parameter of a kind of video conference terminal, with meeting television terminal access session TV system, and the low speed data LSD channel of unlatching video conference terminal, described method comprises:
A, controlling party terminal send video parameter to Be Controlled side's terminal and adjust request message, video parameter comprises brightness, colourity and saturation, video parameter is adjusted request command and is represented with command code in far-end camera control FECC message, this code value is the arbitrary value outside the code value of H.281 protocol definition, and described video parameter is adjusted request message and is successively through the message behind the coding H.281 and H.224;
B, Be Controlled side's terminal adjust content of parameter in the request message according to the described video parameter of receiving, self video parameter is adjusted accordingly.
Described Be Controlled side terminal is connected by multimedia interactive platform MCU with the controlling party terminal;
Before the step a, this method further comprises: the controlling party terminal is to MCU request LSD token, and MCU returns the request success message that carries the LSD token to the controlling party terminal;
Accordingly, controlling party terminal described in the step a sends video parameter by MCU to Be Controlled side's terminal and adjusts request message;
Be Controlled side's terminal receives the described video parameter adjustment request message that MCU sends among the step b;
After the step b, this method further comprises: the controlling party terminal discharges the LSD token.
Described TV conference system is a plurality of MCU cascade network modes, and described step a further comprises: the video parameter adjustment request message that the controlling party terminal is sent is transmitted the MCU under arrival Be Controlled side terminal between MCU.
Wherein, the described Be Controlled side of step b terminal is adjusted content of parameter in the request message according to the described video parameter of receiving, self video parameter is adjusted accordingly be specially:
B1, the video parameter received is adjusted request message H.224 decode;
B2, judge whether it is that the video parameter of issuing oneself is adjusted request message, if, execution in step b3 then; Otherwise, finish current adjustment process;
B3, video parameter is adjusted request message H.281 decode;
The command code value of b4, foundation gained after H.281 decoding judges whether it is to adjust video parameter message, if, execution in step b5; Otherwise, finish current adjustment process;
B5, Be Controlled side's terminal are adjusted the video parameter value of Be Controlled side's terminal according to the concrete parameter value in the described message.The frequency parameter value.
Step b2 is described to judge whether it is that the video parameter of issuing oneself is adjusted request message and is specially: discern according to MT number of step b1 decoding gained.
The method of the long-range adjustment video parameter of video conference terminal provided by the present invention has the following advantages:
The present invention is by extended distal end camera control (FECC) message, in this message, increase and adjust video parameter message, adjust the history that the far-end video parameter needs the far-end operation personnel to cooperatively interact in the TV conference system thereby be through with in the past, make video parameter become convenient, fast by local terminal adjustment distance terminal.
Description of drawings
Fig. 1 is the TV conference system schematic diagram of single multimedia interactive platform (MCU);
Fig. 2 is the TV conference system schematic diagram of point-to-point interconnection;
Fig. 3 is the TV conference system schematic diagram of a plurality of MCU cascade systems;
Fig. 4 adjusts the implementation procedure schematic diagram of video parameter for embodiment of the invention terminal remote;
Fig. 5 is the realization flow figure that embodiment of the invention controlling party terminal is adjusted video parameter;
Fig. 6 is the realization flow figure that embodiment of the invention Be Controlled side terminal is adjusted video parameter.
Embodiment
Below in conjunction with accompanying drawing and embodiments of the invention method of the present invention is described in further detail.
Core concept of the present invention is: by extended distal end camera control (FECC) message, in FECC message, increase video parameter adjustment request (FECCS_VideoAdjustRequest) message, realize the remote camera video parameter, as brightness, colourity, the isoparametric adjustment of saturation.
Specific implementation is: with meeting television terminal access session TV system, at first open the low speed data channel of video conference terminal, make controlling party terminal and Be Controlled side's terminal see the other side mutually by the adjustment of far-end camera control messages then; Perhaps adjust the controlling party terminal earlier and make itself and Be Controlled side's terminal can see the other side mutually, open the low speed data channel again.For example, controlling party terminal broadcasting earlier oneself, video conference terminal to be controlled is seen in choosing then, has so just realized seeing mutually with Be Controlled side's terminal.If this moment, terminal was under the mode by MCU access session TV system, the controlling party terminal is initiated the application of LSD token to MCU, after the LSD token is got permission and obtained in application, sends the parameter message of adjusting video to Be Controlled side's terminal by the controlling party terminal.Under the situation that controlling party terminal and Be Controlled side's terminal are connected in point-to-point mode, owing to can directly send the parameter message of adjusting video to Be Controlled side, so do not need the communication of LSD token conference participation television system.
Fig. 1 is the TV conference system schematic diagram of single MCU, as shown in Figure 1, can couple together and form a TV conference system being distributed in terminal A, terminal B in different location, the LAN and terminal C by MCU, can realize audiovisual conference function and data sharing between each terminal.Employed terminal can insert by the Internet protocol mode, also can insert by the E1 private-line mode.
Described terminal is meant the camera that video conference is used, and this camera can connect equipment such as microphone, television receiver, computer as required, and corresponding video, audio signal are further handled.
Fig. 2 is the TV conference system schematic diagram of point-to-point interconnection, as shown in Figure 2, in this point-to-point interconnection, connects by special line or Internet protocol between the terminal, and does not need to transfer by MCU.
Fig. 3 is the TV conference system schematic diagram of a plurality of MCU cascade systems, as shown in Figure 3, this connected mode is single MCU TV conference system shown in Figure 1 to be carried out cascade by MCU constitute, by the TV conference system of this complexity, can build application platforms such as Remote Video Conference, remote teaching, remote monitoring.
Fig. 4 is the implementation procedure schematic diagram of embodiment of the invention terminal remote adjustment video parameter, and in the present embodiment, under a MCU, terminal A is as controlling party, and terminal B and terminal C are as Be Controlled side.Open and terminal A can see mutually under the other side's the situation with terminal B when the LSD channel, and the process of the video parameter by terminal A adjustment terminal B and terminal C may further comprise the steps as shown in Figure 4:
Step 401: terminal A sends the request of application LSD token to MCU.
If terminal is by point-to-point interconnection, then do not need to apply for the LSD token, just can realize the video parameter of control far-end camera by controlling party.In this case, this step is omitted.
Step 402:MCU returns the message of the application success that carries the LSD token to terminal A, and terminal A obtains the LSD token.
Step 403: terminal A according to self interface shown pass through the video pictures situation that terminal B is sent, adjust request message to sending the far-end video parameter with MCU that terminal A directly links to each other.
The far-end video parameter that terminal A sends is adjusted request message, and its form sees Table one:
8 7 6 5 4 3 2 1
| Video parameter adjustment request (FECCS_VideoAdjustRequest) |
| Brightness |
| Colourity |
| Saturation |
Table one
Request message format is adjusted in the video parameter adjustment of sending for terminal A as shown in Table 1, wherein, video parameter adjustment request (FECCS_VideoAdjustRequest) order is represented with command code in FECC message, this code value is the arbitrary value outside the code value of H.281 protocol definition, as 0x18; Brightness, colourity, saturation all account for 8 bits.Video parameter can be 0～2
8* 2
8* 2
8Span in adjust.
Further, the video parameter that described terminal A sends is adjusted request message, is through the message after H.281 and H.224 encoding.
H.281, described is that ITU-T is about video conferencing Remote Camera control protocol.
H.224, described is that ITU-T is about TV conference system utilization LSD or high-speed data (HSD) or multi-layer protocol (MLP) channel control protocol H.221.Wherein, H.221 agreement is the agreement of ITU-T about communication frame structure in the TV conference system.It has mainly defined audio frequency, video, data, control signaling etc. and how to be multiplexed to the form that frame transmits.
If there are a plurality of MCU in this TV conference system, then the MCU that directly links to each other with terminal A just adjusts request message with this video parameter and transmits, until arrive with MCU that Be Controlled side's terminal directly links to each other in.
The far-end video parameter of step 404:MCU after the terminal B forwarding that directly links to each other with it is encoded adjusted request message, after terminal B receives this message, carry out H.224 respectively and H.281 decoding, read the value of video parameter set in this message, and adjust the video parameter of terminal B according to the value of reading.
More than be the basic process of adjusting the video parameter of remote terminal B by terminal A.If after having adjusted the video parameter of terminal B, also want to adjust the video parameter of terminal C, then do not need to apply for again the LSD token, only need controlling party terminal A and Be Controlled side terminal C be adjusted under the state that can see the other side mutually by FECC message, execution in step 405～step 406 gets final product then, and its step is as follows:
Step 405: terminal A sends the far-end video parameter to MCU and adjusts request message according to the video pictures situation that terminal C is sent of passing through that shows on self interface, and its video parameter is adjusted request message format with table one.
In the same manner, the video parameter that described terminal A sends is adjusted request message, is through the message after H.281 and H.224 encoding.
Step 406:MCU transmits through the far-end video parameter behind the coding to terminal C and adjusts request message, after terminal C receives this message, carry out H.224 and H.281 decoding, read the value of set video parameter, and adjust the video parameter of terminal B according to the value of reading.
After having adjusted the video parameter of long-range terminal B and terminal C, if when also wanting to adjust the video parameter of other remote terminals, still can repeat the operation of similar step 404～step 405 as long as the LSD token does not discharge this moment, adjusts the video parameter of other remote terminals; If do not want to continue to adjust other remote terminals video parameter or this moment other-end the video parameter adjusted intact, can discharge the LSD token, finish the adjustment process of video parameter.
Below processing procedure, Be Controlled side's terminal of respectively the controlling party terminal being carried out the video parameter adjustment receives that the processing procedure of described video parameter message illustrates respectively.
Fig. 5 is that embodiment of the invention controlling party terminal is adjusted the video parameter flow chart, and as shown in Figure 5, the controlling party terminal is adjusted video parameter and needed as follows:
Step 501: TV conference system checks at first whether the LSD channel is opened, if this channel is opened, then execution in step 502; Otherwise, finish this and adjust the video parameter process, wait for starting this LSD channel.
Step 502: connecting by the MCU mode under the situation of required operational terminal, the controlling party terminal is to MCU application LSD token, if LSD token application success, then execution in step 503; Otherwise, finish this and adjust the video parameter process.
If point-to-point meeting connected mode does not then need to apply for the LSD token, adjust video parameter but directly control distance terminal by controlling party.
Step 503: send video parameter by the controlling party terminal and adjust request message, and transmit to Be Controlled side's terminal by MCU.
Controlling party terminal and Be Controlled side's terminal by the point-to-point mode that links to each other under, use Be Controlled side's terminal directly to send video parameter and adjust request message to Be Controlled side's terminal.
Above operating process can be by the video equipment that links to each other with the controlling party terminal, the video pictures of Be Controlled side's terminal receiver, video parameter adjustment process is shown in real time, be convenient to the controlling party terminal and further adjust according to received video pictures effect.
Step 504: video parameter is adjusted request message H.281 encode.
Step 505: H.224 encode again to adjusting request message through the video parameter of H.281 encoding.
Step 506: the controlling party terminal discharges the LSD token, and the video parameter adjustment process finishes.
Fig. 6 is that embodiment of the invention Be Controlled side terminal is adjusted the video parameter flow chart, and as shown in Figure 6, Be Controlled side's terminal is adjusted video parameter and needed as follows:
Step 601: Be Controlled side's terminal receives video parameter adjustment request (FECCS_VideoAdjustRequest) message that forwards from MCU.
Step 602: in Be Controlled side's terminal, the video parameter of receiving is adjusted request message H.224 decode.
Step 603: judge whether it is that the video parameter of issuing oneself is adjusted request message, if then execution in step 604; Otherwise, finish adjustment process.
Here, it number is to discern for MT number that described judgement can be adjusted MCU number of obtaining after the request message decoding and terminal (Terminal) according to step 602 pair video parameter, if MT number of decoding back gained with local terminal MT number is identical, then illustrates and issues oneself; Perhaps MT number is 0, represents that then controlling party terminal and Be Controlled side's terminal are to logical under the point-to-point mode.
Step 604: video parameter is adjusted request message H.281 decode.
Step 605: foundation is decoded command code value H.281, judges whether it is to adjust video parameter message, if then execution in step 606; Otherwise, the video parameter adjustment process of end Be Controlled side.
Described command code value, be meant the command code of video parameter adjustment request (FECCS_VideoAdjustRequest) order representative in FECC message, as long as the value of this code is not conflicted with the defined command code value of agreement H.281, for example: can represent video parameter adjustment request command with 0x18.
Step 606: Be Controlled side's terminal changes the video parameter of self according to the parameter value in the video adjustment parameter message, finishes the adjustment of video parameter.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.
Claims (6)
1. the method for the long-range adjustment video parameter of video conference terminal is characterized in that, with meeting television terminal access session TV system, and the low speed data LSD channel of unlatching video conference terminal, described method comprises:
A, controlling party terminal send video parameter to Be Controlled side's terminal and adjust request message, described video parameter comprises brightness, colourity and saturation, video parameter is adjusted request command and is represented with command code in far-end camera control FECC message, this code value is the arbitrary value outside the code value of H.281 protocol definition, and described video parameter is adjusted request message and is successively through the message behind the coding H.281 and H.224;
B, Be Controlled side's terminal adjust content of parameter in the request message according to the described video parameter of receiving, self video parameter is adjusted accordingly.
2. the method for long-range adjustment video parameter according to claim 1 is characterized in that, described Be Controlled side terminal is connected by multimedia interactive platform MCU with the controlling party terminal;
Before the step a, this method further comprises: the controlling party terminal is to MCU request LSD token, and MCU returns the request success message that carries the LSD token to the controlling party terminal;
Accordingly, controlling party terminal described in the step a sends video parameter by MCU to Be Controlled side's terminal and adjusts request message;
Be Controlled side's terminal receives the described video parameter adjustment request message that MCU sends among the step b;
After the step b, this method further comprises: the controlling party terminal discharges the LSD token.
3. the method for long-range adjustment video parameter according to claim 1 and 2 is characterized in that, described video parameter is adjusted request message and comprised: video parameter is adjusted request command code, video parameter.
4. the method for long-range adjustment video parameter according to claim 2, it is characterized in that, described TV conference system is a plurality of MCU cascade network modes, described step a further comprises: the video parameter adjustment request message that the controlling party terminal is sent is transmitted the MCU under arrival Be Controlled side terminal between MCU.
5. the method for long-range adjustment video parameter according to claim 1 and 2, it is characterized in that, the described Be Controlled side of step b terminal is adjusted content of parameter in the request message according to the described video parameter of receiving, self video parameter is adjusted accordingly be specially:
B1, the video parameter received is adjusted request message H.224 decode;
B2, judge whether it is that the video parameter of issuing oneself is adjusted request message, if, execution in step b3 then; Otherwise, finish current adjustment process;
B3, video parameter is adjusted request message H.281 decode;
The command code value of b4, foundation gained after H.281 decoding judges whether it is to adjust video parameter message, if, execution in step b5; Otherwise, finish current adjustment process;
B5, Be Controlled side's terminal are adjusted the video parameter value of Be Controlled side's terminal according to the concrete parameter value in the described message.
6. the method for long-range adjustment video parameter according to claim 5 is characterized in that, step b2 is described to judge whether it is that the video parameter of issuing oneself is adjusted request message and is specially: discern according to MT number of step b1 decoding gained.
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| CN2007101759512A CN101141614B (en) | 2007-10-16 | 2007-10-16 | Session television terminal video parameter remote adjusting method |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101583011B (en) * | 2009-05-27 | 2012-04-04 | 华为终端有限公司 | Video conference control method and system, video conference network equipment and conference places |
| CN102413140A (en) * | 2011-11-30 | 2012-04-11 | 江苏奇异点网络有限公司 | Network teaching method for supporting speech interaction |
| CN103747199B (en) * | 2013-12-09 | 2019-06-14 | 三亚中兴软件有限责任公司 | The cut-in method and system in video conference television terminal video source |
| CN105100545A (en) * | 2014-05-23 | 2015-11-25 | 三亚中兴软件有限责任公司 | Method for adjusting brightness of frame, multipoint control unit (MCU) and terminal |
| WO2016029483A1 (en) * | 2014-08-30 | 2016-03-03 | 华为技术有限公司 | Network parameter adjustment method and base station device |
| CN107360471A (en) * | 2016-05-10 | 2017-11-17 | 中兴通讯股份有限公司 | A kind of method and device that remote monitoring is realized in TV conference system |
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