CN101867768A - Picture control method and device for video conference place - Google Patents
Picture control method and device for video conference place Download PDFInfo
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- CN101867768A CN101867768A CN 201010186823 CN201010186823A CN101867768A CN 101867768 A CN101867768 A CN 101867768A CN 201010186823 CN201010186823 CN 201010186823 CN 201010186823 A CN201010186823 A CN 201010186823A CN 101867768 A CN101867768 A CN 101867768A
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Abstract
The invention discloses a picture control method and a picture control device for a video conference place, which are applied to a video conference system comprising a multipoint control unit (MCU). The method comprises the following steps that: the MCU periodically detects the volumes of the place and adds the picture of a current place with a maximum volume periodically detected by the MCU into a broadcast picture when the picture of the current periodically-detected place with the maximum volume does not exist in the broadcast picture; and when the picture playing time length of a certain one of the places corresponding to the broadcast picture from the latest moment when the change of the place from a place with the maximum volume to a place without the maximum volume is detected is more than a set time length, the MCU deletes the picture of the corresponding place from the broadcast picture. Due to the adoption of the method and the device, the playing of video conference place pictures can be automatically controlled according to the on-site situation of a video conference.
Description
Technical field
The present invention relates to the video conferencing technology in the communication technical field, particularly relate to a kind of video conference place menu control method and device thereof.
Background technology
Video conference is the meeting that integrates video, audio frequency, data communication, but the image in each meeting-place of real-time Transmission and sound, make each meeting-place from be in a meeting in logic, but physically not in a zone, compare with traditional meeting, can save overspending and do not influence the quality of meeting.Video conferencing system realizes virtual meeting by the network communications technology, and the user who disperses on the geography is accumulated in a place, by multiple mode exchange of information such as image, sound, carries out collaborative work.Space length has been shortened in video conference to the full extent, has made things convenient between the cooperation member in real time, has exchanged intuitively.This conference model has obtained more and more general application.
Generally, whole meeting is carried out according to predefined flow process, all watches some specific meeting field picture in all meeting-place of synchronization, listens to the sound in this meeting-place.The flow process of whole meeting is operated control by the administrative staff in MCU (Multi-Point Control Unit, multipoint control unit) side, according to agenda maybe needs switch different image modes and in meeting, broadcast.When beginning to call the roll such as meeting, switch to 2 panes, wherein a screen is the picture that Chair site is called the roll, the called the roll picture in meeting-place of another screen; When chairman gives a lecture in the meeting, the single-image of broadcasting Chair site.
When broadcasting single-image in the video conference at present, can realize by the configured voice excitation.Voice-activated is meant that MCU carries out Energy Estimation to the audio frequency input in all meeting-place, judges the meeting-place of volume maximum in a certain short time, selects the image broadcast in this meeting-place to give all meeting-place then.Its implementation procedure generally includes: the configuration meeting is that voice-activated or configuration picture are voice-activated; MCU carries out Energy Estimation to all audio input datas, generally adopts 60 milliseconds data, obtains the wherein meeting-place of volume maximum then; It is video source that MCU switches this meeting-place, as broadcast source or sprite meeting-place, thereby is broadcast to all meeting-place.
When adopting span mode, then generally realize as follows: when meeting begins to need to call the roll, the 2 panes pattern is set earlier, comprises Chair site picture and the meeting-place picture of being called the roll by the keeper; The chairman calls the roll one by one to all meeting-place, during changed according to the roll-call situation by the meeting-place picture of being called the roll, the picture of this process switches to be controlled by the keeper; After roll-call finished, the keeper switched to the single-image of Chair site.
The inventor finds that there is following problem at least in prior art in realizing process of the present invention:
During the broadcasting single-image, can only between each meeting-place picture, carry out single-image according to voice-activated and switch; When adopting split screen mode to broadcast many meeting-place picture, each switching all needs the keeper to participate in.As seen, existing video conference picture control technology can not be controlled the meeting-place picture automatically according to the meeting-place actual conditions.
Summary of the invention
The invention provides a kind of video conference place menu control method and device thereof, can't control the problem that the meeting-place picture is play automatically according to the meeting-place actual conditions in order to solve existing video conference place picture control technology.
Video conference place menu control method provided by the invention is applied to include the video conferencing system of multipoint control unit MCU, and this comprises:
MCU cycle detection meeting-place volume when the picture in the detected max volume of MCU current period meeting-place is not present in the broadcast picture, is added the picture in the detected max volume of current period meeting-place in the broadcast picture to;
In the meeting-place of broadcast picture correspondence, when the picture playing duration that has the meeting-place to be detected the moment that becomes non-max volume meeting-place from the max volume meeting-place from its last time surpass to be set duration, MCU removed the picture in corresponding meeting-place from broadcast picture.
According to said method of the present invention, MCU is provided with data space, be used for storage meeting field information, described meeting-place information comprises that meeting-place sign and corresponding meeting-place become the time started in non-max volume meeting-place, the maximum sustainable duration of picture from the max volume meeting-place;
When MCU current period detected max volume meeting-place and detected max volume meeting-place of last cycle not simultaneously, also comprise: if the information in detected max volume meeting-place of last cycle is not present in described data space, then the information stores with detected max volume meeting-place of described last cycle arrives described data space, and wherein the described time started in this meeting-place is the time of current time; Otherwise, be updated to time of current time the described time started in the information in the detected max volume meeting-place of last cycle described in the described data space;
In the meeting-place of broadcast picture correspondence, when the picture playing duration that has the meeting-place to be detected the moment that becomes non-max volume meeting-place from the max volume meeting-place from its last time surpass to be set duration, MCU removes the picture in corresponding meeting-place from broadcast picture, be specially: the described data space of described MCU cyclic check, when finding that the duration that wherein has the meeting-place to identify corresponding time started apart from the current time identifies the corresponding sustainable duration of picture maximum above this meeting-place, the described picture that surpasses the meeting-place of the corresponding maximum sustainable duration of picture of meeting-place sign is removed from broadcast picture, and the information in this meeting-place is deleted from described data space.
According to said method of the present invention, each meeting-place in the video conference is respectively arranged with timer;
When MCU current period detected max volume meeting-place and detected max volume meeting-place of last cycle not simultaneously, also comprise: under the situation that the timer in detected max volume meeting-place of last cycle does not start, start this timer, otherwise restart this timer;
In the meeting-place of broadcast picture correspondence, when the picture playing duration that has the meeting-place to be detected the moment that becomes non-max volume meeting-place from the max volume meeting-place from its last time surpass to be set duration, MCU removes the picture in corresponding meeting-place from broadcast picture, be specially: when described MCU received the timeout signal of timer, the picture in meeting-place that will be corresponding with the timer that sends this timeout signal was removed from broadcast picture.
In the said method, the timing duration of the timer in each meeting-place is identical or different.
According to said method of the present invention, described setting duration is the setting duration corresponding with corresponding meeting-place, and the setting duration of each meeting-place correspondence is identical or different.
Video conference MCU equipment provided by the invention comprises the audio processing modules that is used to detect audio volume, also comprises:
Meeting-place picture control module, be connected with described audio processing modules, be used for when the picture in the detected max volume of described audio processing modules current period meeting-place is not present in broadcast picture, the picture in the detected max volume of current period meeting-place is added in the broadcast picture; And, in the meeting-place of broadcast picture correspondence, when the picture playing duration that has the meeting-place to be detected the moment that becomes non-max volume meeting-place from the max volume meeting-place from its last time surpass to be set duration, the picture in corresponding meeting-place is removed from broadcast picture.
In the above-mentioned video conference MCU equipment, described meeting-place picture control module comprises:
Memory cell is used for storage meeting field information, and described meeting-place information comprises that meeting-place sign and corresponding meeting-place become the time started in non-max volume meeting-place, the maximum sustainable duration of picture from the max volume meeting-place;
Control unit, it is different with detected max volume meeting-place of last cycle to be used for working as the detected max volume of described audio processing modules current period meeting-place, and the last week detected max volume meeting-place information when not being present in described memory cell, the information stores in detected max volume meeting-place of described last cycle is arrived described memory cell, wherein the described time started in this meeting-place is the time of current time, otherwise pairing time started of sign in the detected max volume meeting-place of last cycle described in the described memory cell is updated to the time of current time; And, the described memory cell of cyclic check, when finding that the duration that wherein has the meeting-place to identify corresponding time started apart from the current time identifies the corresponding sustainable duration of picture maximum above this meeting-place, the described picture that surpasses the meeting-place of the corresponding maximum sustainable duration of picture of meeting-place sign is removed from broadcast picture, and the information in this meeting-place is deleted from described memory cell.
In the above-mentioned video conference MCU equipment, the maximum sustainable duration of the picture in each meeting-place of storing in the described memory cell is identical or different.
In the above-mentioned video conference MCU equipment, described meeting-place picture control module comprises:
The timer that each meeting-place is corresponding respectively is used for timing, and sends timeout signal when timing is overtime;
Control unit, be connected with the timer in each meeting-place, be used for working as described audio processing modules current period detected max volume meeting-place and detected max volume meeting-place of last cycle not simultaneously, under the timer situation about not starting in detected max volume meeting-place the last week, start this timer, otherwise restart this timer; And when receiving the timeout signal of timer, the picture in meeting-place that will be corresponding with the timer that sends this timeout signal is removed from broadcast picture.
In the above-mentioned video conference MCU equipment, the timing duration of each timer is identical or different.
Useful technique effect of the present invention comprises:
One aspect of the present invention is by cycle detection max volume meeting-place, and it is different with detected max volume meeting-place of last cycle in the detected max volume of current period meeting-place, and when the picture in the detected max volume of current period meeting-place is not present in the broadcast picture, the picture in the detected max volume of current period meeting-place is added in the broadcast picture, thus when having the meeting-place to become the meeting-place of volume maximum because of speech the timely picture in this meeting-place of broadcasting; On the other hand, in the meeting-place of broadcast picture correspondence, when the picture playing duration that has the meeting-place to be detected the moment that becomes non-max volume meeting-place from the max volume meeting-place from its last time surpass to be set duration, the picture in corresponding meeting-place is removed from broadcast picture, thus have the meeting-place because of do not make a speech and reach certain time length after no longer play the picture in this meeting-place.As seen, the present invention can control the broadcast of meeting-place picture automatically according to the video conference field condition.
Description of drawings
The video conference place picture control flow schematic diagram that Fig. 1 provides for the embodiment of the invention one;
The video conference place picture control flow schematic diagram that Fig. 2 provides for the embodiment of the invention two;
The structural representation of the MCU that Fig. 3 provides for the embodiment of the invention;
Fig. 4 is one of the structural representation of the picture control module of the MCU in the embodiment of the invention;
Fig. 5 be the MCU in the embodiment of the invention the picture control module structural representation two.
Embodiment
At the problem that prior art exists, the embodiment of the invention provides a kind of technical scheme of video conference place picture control.In this technical scheme, MCU cycle detection meeting-place volume, when the detected max volume of MCU current period meeting-place different with detected max volume meeting-place of last cycle, and when the picture in the detected max volume of current period meeting-place is not present in the broadcast picture, the picture in the detected max volume of current period meeting-place is added in the broadcast picture; In the meeting-place of MCU cyclic check broadcast picture, the picture playing duration that whether has the meeting-place to be detected the moment that becomes non-max volume meeting-place from the max volume meeting-place from its last time surpasses the setting duration, if have then it removed from broadcast picture, thereby can be according to the video conference field condition, the broadcast of control of video meeting meeting-place picture automatically.
Be described in detail below in conjunction with the implementation procedure of accompanying drawing the embodiment of the invention.
Embodiment one
In the present embodiment, configuration information formation on MCU (can be described as picture control formation, or voice-activated formation, hereinafter to be referred as formation), be used to store the meeting-place sign, corresponding to meeting-place sign also store this meeting-place from max volume be changed to be not max volume the moment (for convenience of description, below this is called non-enlivening the zero hour constantly), the maximum sustainable duration of picture that further also can comprise this meeting-place, MCU is according to this formation of voice-activated real-time servicing, and play according to the picture of this formation control of video meeting, switch as picture, picture and selecting, operations such as split screen.
Wherein, the maximum sustainable duration of the picture in meeting-place is on the basis of existing video conference place parameter, the meeting-place parameter that present embodiment increases newly.This parametric representation meeting-place allows the maximum duration play from the non-zero hour its picture of enlivening.After this parameter is provided with, can all come into force to all meeting-place in the video conference, as the default value in each meeting-place.Also can allow the user that this parameter in each meeting-place is provided with separately, or allow revise the default value of this parameter, thus make the maximum sustainable duration of picture in each meeting-place can be identical also can be inequality.Preferably, the maximum sustainable duration of picture that can Chair site is set to that to continue duration identical with video conference, perhaps by a special identifier (as-1) being set to be illustrated in the video conference duration, the picture duration of Chair site can not reach maximum all the time.
MCU carries out the formation maintenance and meeting-place picture control procedure can be as shown in Figure 1 in the present embodiment.
As shown in Figure 1, MCU safeguards that the flow process that picture control formation and control meeting-place picture are play can comprise:
MCU is according to the meeting-place of volume maximum in each meeting-place of setting cycle detection video conference, and is concrete, and MCU can carry out Energy Estimation to the audio frequency input in all meeting-place, thereby determines the meeting-place (step 101) of volume maximum in a certain period;
If the meeting-place of the detected volume maximum of current period is different with the meeting-place of the detected volume maximum in last cycle, and the meeting-place of last detected max volume of cycle record is not present in the formation, and then MCU adds the maximum sustainable duration of the picture in the sign in the meeting-place of detected volume maximum of last cycle, the time of current time (promptly this meeting-place is up to the off-peak moment from volume), this meeting-place to the formation (step 102, step 104, step 106); If the max volume meeting-place that this current cycle detection this moment goes out is not present in the formation, then MCU adds the meeting-place picture of the detected volume maximum of current period in the broadcasting pictures to and broadcasts (step 107, step 109), otherwise MCU keeps the broadcast picture in current meeting-place constant (step 108);
If the meeting-place of the detected volume maximum of current period is different with the last cycle, but write down in the formation Already in the meeting-place of last detected max volume of cycle, and then MCU is current time (step 104, a step 105) with " non-enlivening the zero hour " parameter update in the meeting-place record of last detected max volume of cycle; If in the max volume meeting-place formation Already in that this current cycle detection this moment goes out, then MCU keeps current meeting-place picture broadcast state constant (step 107, step 108), otherwise MCU adds the meeting-place picture of the detected volume maximum of current period to and broadcasts (step 109) in the broadcasting pictures;
MCU checks picture control formation according to setting cycle, identify the maximum sustainable duration parameters of pairing picture if there be the duration of meeting-place to surpass this meeting-place in the discovery formation from its " non-enlivening the zero hour " to current time, then the record in this meeting-place is deleted from formation, and the picture in this meeting-place is removed (this step is not shown in Figure 1) from the picture of in progress meeting-place.
As can be seen, if the maximum meeting-place of current volume is controlled in the formation at picture, then MCU controls split screen number=queue length; If the maximum meeting-place of current volume is in picture control formation, the picture in the meeting-place of the volume maximum that current detection arrives promptly, the meeting-place picture in broadcasting pictures control formation, is also play in MCU control split screen number=queue length+1 then.
Need to prove; (comprise meeting-place sign and time corresponding parameter by formation form storage meeting-place record; as above-mentioned picture control formation) only be a kind of data store organisation of form; but the embodiment of the invention is not limited to this data structure, and any data structure or the data space that can store corresponding data all should be included within protection scope of the present invention.
Be example with two practical application scenes below, the implementation procedure of the foregoing description is specifically described.
Scene one: generally call the roll and give a lecture meeting
In this scene, video conference has A, B, C, D...Z 26 meeting-place altogether, and meeting-place A is a Chair site, and the maximum sustainable duration of the meeting-place picture of A is 20 seconds, and the maximum sustainable duration of the picture in all the other each meeting-place is 5 seconds.Video conference begins back A and begins to call the roll, and makes a speech then, follow-uply called the roll in each meeting-place in order, and the meeting-place of being called the roll speech.According to above scene, the process of MCU control of video meeting picture is:
1, after video conference began, A prologued.MCU carries out audio power to all movable meeting-place and estimates, thereby obtains the meeting-place of volume maximum, and this moment, the meeting-place of volume maximum was A (t0 constantly), and the single-image of MCU broadcast site A is given all meeting-place;
2, A roll-call B, when B spoke, MCU detected B volume maximum (t1 constantly).Because the meeting-place of volume maximum becomes B from A, then MCU record { A, t1,20 seconds } is in formation, and queue length is 1; Because meeting-place B is current not in formation, but the meeting-place of current volume maximum, thus MCU to switch single split screen be 2 split screens, broadcast the picture in A and two meeting-place of B simultaneously;
3, A roll-call C, when A loquitured, MCU detected A volume maximum (t2 constantly).Because the meeting-place of volume maximum becomes A from B, MCU record { B, t2,5 seconds } is in formation, and queue length is 2; Because the meeting-place A formation Already in of current max volume, thus MCU to keep span mode be that 2 split screens are constant, continue the picture in broadcasting A and two meeting-place of B;
4, during A speaks, when MCU makes regular check on meeting-place in the formation, find that current time surpasses 5 seconds to the duration of t2, show that then the lasting duration of picture of meeting-place B reaches the maximum sustainable duration (hereinafter to be referred as overtime) of its picture, therefore the record of deletion meeting-place B from formation; Equally, if current time surpasses 20 seconds to the duration of t1, the record of deletion meeting-place A from formation then, queue length is 0, though do not have the meeting-place record, the volume maximum of current meeting-place A in formation this moment; MCU switches to single split screen, the picture in broadcasting A meeting-place; If current time does not surpass 20 seconds to the duration of t1, then the record of the A meeting-place in the hold queue is constant;
5, C loquiturs behind the A roll-call C, and MCU detects the volume maximum (t3 constantly) of C.Because the meeting-place of volume maximum becomes C from A, therefore under the situation of a last step with the record deletion formation of A meeting-place, this moment, the record with meeting-place A added in the formation, and current formation is { A, t3,20 seconds }; Because the volume of current meeting-place C is maximum not in formation, so MCU to switch single split screen be 2 split screens, the picture of broadcast site A and C simultaneously; If do not delete A meeting-place record in the last step from formation, then be updated to current time with " non-enlivening the zero hour " in the record of A meeting-place this moment;
6, A other meeting-place of calling the roll, above-mentioned 3～5 process can be repeated to be similar in meeting-place of every roll-call;
7, A begins speech, and at this moment, other meeting-place in the formation except that A are because of overtime all deleted dequeue (A is current not overtime), and therefore, MCU switches to single split screen, only broadcasts the picture of the meeting-place A of volume maximum.After a time, when MCU made regular check on formation, " non-the enlivening the zero hour " of finding meeting-place A correspondence in the formation surpassed 20 seconds to the duration of current time, then from formation with the record deletion of meeting-place A, therefore but this moment, meeting-place A was still the max volume meeting-place, the picture of broadcast site A still.
8, after half an hour, the A end of talking though there is not the record of A during this in the formation, because of it is detected as the meeting-place of volume maximum always, is therefore play the picture of meeting-place A always, and B begins speech, and MCU detects the volume maximum (tn constantly) of meeting-place B; MCU record { A, tn, 20 seconds } is in formation, and queue length is 1; It is 2 split screens that MCU switches single split screen, simultaneously the picture of broadcast site A and B;
9, after 20 seconds, find when MCU makes regular check on formation that meeting-place A is overtime, just delete the record of meeting-place A from formation, queue length reverts to 0; It is single split screen that MCU switches 2 split screens, and only broadcasting current is the picture of the meeting-place B of max volume.
As can be seen, owing to be provided with the formation of above-mentioned record meeting field information, but this formation of MCU cyclic check, by calculating in this formation the time span of each " non-enlivening the time started " in can field information to the current time, determine that whether the duration that corresponding meeting-place is in non-max volume meeting-place surpasses the duration (i.e. " the maximum sustainable duration of picture ") of regulation, thereby determine whether no longer to play the picture in corresponding meeting-place in view of the above.
Scene two: council
In this scene, video conference has A, B, C, D...Z 26 meeting-place altogether, and meeting-place A is a Chair site, and the maximum sustainable duration of the meeting-place picture of A is made as-1, being illustrated in can be not overtime during the video conference, and the maximum sustainable duration of the picture in all the other each meeting-place is 3 minutes.Video conference begins back meeting-place A and states opening remarks, enters on then.According to above scene, the process of MCU control of video meeting picture is:
1, after meeting began, A prologued.MCU carries out audio power to all movable meeting-place and estimates, thereby obtains the meeting-place of volume maximum, and this moment, the meeting-place of volume maximum was meeting-place A (t0 constantly), and the single-image of MCU broadcast site A is given all meeting-place;
2, B begins speech.When B spoke, MCU detected B volume maximum (t1 constantly).Because the meeting-place of volume maximum becomes B from A, then { A, t1 ,-1} are in formation, and queue length is 1 for the MCU record; Because meeting-place B is current not in formation, but the meeting-place of current volume maximum, thus MCU to switch single split screen be 2 split screens, broadcast the picture in A and two meeting-place of B simultaneously;
3, C begins speech, and MCU detects C volume maximum (t2 constantly).Because the meeting-place of volume maximum becomes C from B, so MCU record { B, t2,3 minutes } is in formation, and queue length is 2; Because comprise the record of meeting-place A, B in the formation, the meeting-place of current max volume is C, so MCU switches to 3 split screens with span mode, the picture of broadcast site A, B, C;
4, D begins speech, and MCU detects D volume maximum (t3 constantly).Because the meeting-place of volume maximum becomes D from C, so MCU record { C, t3,3 minutes } is in formation, and queue length is 3; Because comprise the record of meeting-place A, B, C in the formation, the meeting-place of current max volume is D, so MCU switches to 4 split screens with span mode, the picture of broadcast site A, B, C, D;
5, B refutes, and MCU detects B volume maximum (t4 constantly).Because the meeting-place of volume maximum becomes B from D, so MCU record { D, t4,3 minutes } is in formation, and queue length is 4; Because comprise the record of meeting-place A, B, C, D in the formation, the meeting-place of current max volume is D, it is that 4 split screens are constant that MCU keeps span mode;
6, D refutes, and MCU detects D volume maximum (t5 constantly).Because the meeting-place of volume maximum becomes D from B, so MCU revises the record of B in the formation, promptly is revised as { B, t5,3 minutes }, and queue length is 4; Because comprise the record of meeting-place A, B, C, D in the formation, the meeting-place of current max volume is D, it is that 4 split screens are constant that MCU keeps span mode;
7, B and D debate, MCU is by making regular check on the meeting-place record in the formation during this time, find meeting-place C overtime (duration that is the t3 during current time writes down apart from meeting-place C was above 3 minutes), therefore MCU deletes the record of meeting-place C from formation, span mode switches to 3 split screens, the picture of broadcast site A, B, D.
8, follow-up similar, when the meeting-place volume is maximum, it is added split screen, in formation, have the meeting-place from max volume become be not max volume the moment (i.e. " non-enlivening the zero hour ") to current time, its duration has surpassed 3 minutes, then its meeting-place record is deleted from formation, this moment, MCU reduced split screen quantity.The duration of video conference, the record in A meeting-place always is retained in the formation, and its picture always is broadcasted.
By above description as can be seen, MCU is by cycle detection meeting-place volume, when the detected max volume of MCU current period meeting-place different with detected max volume meeting-place of last cycle, and when the picture in the detected max volume of current period meeting-place is not present in the broadcast picture, the picture in the detected max volume of current period meeting-place is added in the broadcast picture; In the meeting-place of broadcast picture correspondence, when the picture playing duration that has the meeting-place to be detected the moment that becomes non-max volume meeting-place from the max volume meeting-place from its last time surpass to be set duration, MCU removes the picture in corresponding meeting-place from broadcast picture, thereby realized according to the video conference field condition, in real time the broadcasting of each meeting-place picture of control of video meeting.
Embodiment two
In the present embodiment, a timer is distributed in each meeting-place that can be in the video conference, the timer timing duration in each meeting-place is the maximum sustainable duration of picture that is provided with for corresponding meeting-place, with embodiment one, each meeting-place can have the maximum sustainable duration of identical picture, also can have the maximum sustainable duration of different pictures.Preferably, the maximum sustainable duration of picture that can Chair site is set to infinity, promptly can be not overtime, perhaps timer is not set for Chair site at this situation.Can send timeout signal to MCU during timer expired.
As shown in Figure 2, the flow process of the MCU of embodiment two control meeting-place picture broadcast can comprise:
MCU is according to the meeting-place of volume maximum in each meeting-place of setting cycle detection video conference, and this process can be with embodiment one (step 201);
If the meeting-place of the detected volume maximum of current period is different with the meeting-place of the detected volume maximum in last cycle, and the timer in the meeting-place of last detected max volume of cycle does not also start, and then MCU starts the timer (step 202, step 204, step 206) in the maximum meeting-place of detected volume of this last cycle; If the picture in the detected max volume of current period this moment meeting-place is not in the broadcast picture of meeting-place, MCU and the meeting-place picture of the detected volume maximum of current period added in the broadcasting pictures broadcast (step 207, step 209) then, otherwise keep current meeting-place image broadcast state constant (step 208);
If the meeting-place of the detected volume maximum of current period is different with the maximum meeting-place of the detected volume in last cycle, but the timer in the meeting-place of last detected max volume of cycle starts, and then MCU restarts this timer and makes it restart timing (step 202, step 204, step 205); If the picture in the detected max volume of current period this moment meeting-place is in broadcast picture, then MCU keeps current meeting-place picture broadcast state constant (step 207, step 208), otherwise MCU and the meeting-place picture of the detected volume maximum of current period added in the broadcasting pictures broadcast (step 207, step 209);
If the meeting-place of the detected current period volume of MCU maximum is identical with the last cycle, then MCU keeps the timer state in current each meeting-place constant, and keeps current meeting-place picture broadcast state constant (step 203);
When MCU receives the timeout signal of timer, the picture in corresponding meeting-place (promptly corresponding with the timer that sends timeout signal meeting-place) is removed (this step is not shown in Figure 2) from the meeting-place picture of broadcasting.
By above description as can be seen, MCU is by cycle detection meeting-place volume, when the detected max volume of MCU current period meeting-place different with detected max volume meeting-place of last cycle, and when the picture in the detected max volume of current period meeting-place is not present in the broadcast picture, the picture in the detected max volume of current period meeting-place is added in the broadcast picture; When broadcast picture for the meeting-place in, when the picture playing duration that has the meeting-place to be detected the moment that becomes non-max volume meeting-place from the max volume meeting-place from its last time surpass to be set duration, MCU removes the picture in corresponding meeting-place from broadcast picture, thereby realized according to the video conference field condition, in real time the broadcasting of each meeting-place picture of control of video meeting.In addition, compare, by the mode of distributing timer, saved MCU and made regular check on formation and calculate the whether overtime operation in each meeting-place, thereby alleviated the processing expenditure of MCU for each meeting-place with embodiment one.
In the various embodiments described above of the present invention,, can in the conference parameters of MCU, add configuration parameter, as providing 3 kinds of selections: manually setting, automatic switchover, voice-activated for image mode switches for the existing video conference picture of compatibility control technology; Wherein:
Manual switchover is meant by the keeper and carries out the picture handover operation on the MCU interface, the span mode and MCU itself does not automatically switch;
Automatically switch, be meant MCU according to activity meeting number of fields automatic switchover span mode, during such as a meeting-place be single-image, 2 meeting-place be exactly 2 split screens, 3 meeting-place be exactly 3 split screens or the like;
Voice-activated, be meant that the embodiment of the invention provides by the audio volume size control meeting-place picture of MCU according to each meeting-place of video conference.
After the voice-activated mode is selected, MCU can be according to the present invention the various embodiments described above realize the picture Play Control of video conference place.
The embodiment of the invention also provides the MCU that can be applicable to the various embodiments described above equipment, to realize the picture broadcast according to the audio volume control meeting-place in each meeting-place of video conference.
As shown in Figure 3, the structural representation of the MCU equipment that provides for the embodiment of the invention, this MCU equipment can comprise: audio processing modules 301, meeting-place picture control module 302; Wherein:
Audio processing modules 301 is used to detect audio volume, is the conventional module of MCU;
Meeting-place picture control module 302, be connected with audio processing modules 301, be used for when the picture in the detected max volume of audio processing modules 301 current periods meeting-place is not present in broadcast picture, the picture in the detected max volume of current period meeting-place is added in the broadcast picture; And, when broadcast picture for the meeting-place in, when the picture playing duration that has the meeting-place to be detected the moment that becomes non-max volume meeting-place from the max volume meeting-place from its last time surpass to be set duration, the picture in corresponding meeting-place is removed from broadcast picture.
According to the different implementations as Fig. 1 and Fig. 2, the meeting-place picture control module of this MCU equipment can be respectively as Fig. 4, shown in Figure 5.
Meeting-place picture control module shown in Figure 4 can be applicable to flow process shown in Figure 1, and this meeting-place picture control module can comprise:
Memory cell 401 is used for storage meeting field information, and described meeting-place information comprises that meeting-place sign and corresponding meeting-place become the time started in non-max volume meeting-place, the maximum sustainable duration of picture from the max volume meeting-place; Above meeting field information can the formation mode be stored in this unit; Wherein, the maximum sustainable duration of the picture in each meeting-place can be identical or different;
Control unit 402, it is different with detected max volume meeting-place of last cycle to be used for working as the detected max volume of audio processing modules 301 current periods meeting-place, and when the information in detected max volume meeting-place of last cycle is not present in memory cell 401, with the information stores in this meeting-place to memory cell 401, wherein the described time started in this meeting-place is the time of current time, otherwise pairing time started of sign in this meeting-place in the memory cell 401 is updated to the time of current time; And, cyclic check memory cell 401, when finding that the duration that wherein has the meeting-place to identify corresponding time started apart from the current time identifies the corresponding sustainable duration of picture maximum above this meeting-place, the picture in this meeting-place is removed from broadcast picture, and the information in this meeting-place is deleted from memory cell 401 data spaces.The specific implementation process of this unit can be carried out with reference to the corresponding steps of flow process shown in Figure 1, does not repeat them here.
Meeting-place picture control module shown in Figure 5 can be applicable to flow process shown in Figure 2, and this meeting-place picture control module can comprise:
The timer 501 that each meeting-place is corresponding respectively is used for timing, and sends timeout signal when timing is overtime; The timing duration of the timer of each meeting-place correspondence can be identical or different, and this timing duration is that corresponding meeting-place becomes the picture playing duration that the maximum meeting-place of non-volume is allowed constantly from the maximum meeting-place of volume;
In sum, the above embodiment of the present invention can make the span mode of many pictures automatically switch according to practical application, does not need MCU keeper manual intervention, has saved human resources.When the meeting speaker was switched, picture automatically switched into 2 panes, showed new and old speaker simultaneously, and image connects nature, gave the intimate impression of user.During council, span mode can be according to meeting-place personnel's degree of participation automatic switchover span mode.
Through the above description of the embodiments, those skilled in the art can be well understood to the present invention and can realize by the mode that software adds essential general hardware platform, can certainly pass through hardware, but the former is better execution mode under a lot of situation.Based on such understanding, the part that technical scheme of the present invention contributes to prior art in essence in other words can embody with the form of software product, this computer software product is stored in the storage medium, comprise that some instructions are with so that a station terminal equipment (can be mobile phone, personal computer, server, the perhaps network equipment etc.) carry out the described method of each embodiment of the present invention.
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be looked protection scope of the present invention.
Claims (10)
1. video conference place menu control method is applied to include the video conferencing system of multipoint control unit MCU, it is characterized in that, comprising:
MCU cycle detection meeting-place volume when the picture in the detected max volume of MCU current period meeting-place is not present in the broadcast picture, is added the picture in the detected max volume of current period meeting-place in the broadcast picture to;
In the meeting-place of broadcast picture correspondence, when the picture playing duration that has the meeting-place to be detected the moment that becomes non-max volume meeting-place from the max volume meeting-place from its last time surpass to be set duration, MCU removed the picture in corresponding meeting-place from broadcast picture.
2. the method for claim 1, it is characterized in that, MCU is provided with data space, is used for storage meeting field information, and described meeting-place information comprises that meeting-place sign and corresponding meeting-place become the time started in non-max volume meeting-place, the maximum sustainable duration of picture from the max volume meeting-place;
When MCU current period detected max volume meeting-place and detected max volume meeting-place of last cycle not simultaneously, also comprise: if the information in detected max volume meeting-place of last cycle is not present in described data space, then the information stores with detected max volume meeting-place of described last cycle arrives described data space, and wherein the described time started in this meeting-place is the time of current time; Otherwise, be updated to time of current time the described time started in the information in the detected max volume meeting-place of last cycle described in the described data space;
In the meeting-place of broadcast picture correspondence, when the picture playing duration that has the meeting-place to be detected the moment that becomes non-max volume meeting-place from the max volume meeting-place from its last time surpass to be set duration, MCU removes the picture in corresponding meeting-place from broadcast picture, be specially: the described data space of described MCU cyclic check, when finding that the duration that wherein has the meeting-place to identify corresponding time started apart from the current time identifies the corresponding sustainable duration of picture maximum above this meeting-place, the described picture that surpasses the meeting-place of the corresponding maximum sustainable duration of picture of meeting-place sign is removed from broadcast picture, and the information in this meeting-place is deleted from described data space.
3. the method for claim 1 is characterized in that, each meeting-place in the video conference is respectively arranged with timer;
When MCU current period detected max volume meeting-place and detected max volume meeting-place of last cycle not simultaneously, also comprise: under the situation that the timer in detected max volume meeting-place of last cycle does not start, start this timer, otherwise restart this timer;
In the meeting-place of broadcast picture correspondence, when the picture playing duration that has the meeting-place to be detected the moment that becomes non-max volume meeting-place from the max volume meeting-place from its last time surpass to be set duration, MCU removes the picture in corresponding meeting-place from broadcast picture, be specially: when described MCU received the timeout signal of timer, the picture in meeting-place that will be corresponding with the timer that sends this timeout signal was removed from broadcast picture.
4. method as claimed in claim 3 is characterized in that, the timing duration of the timer in each meeting-place is identical or different.
5. method as claimed in claim 1 or 2 is characterized in that, described setting duration is the setting duration corresponding with corresponding meeting-place, and the setting duration of each meeting-place correspondence is identical or different.
6. a video conference MCU equipment comprises the audio processing modules that is used to detect audio volume, it is characterized in that, also comprises:
Meeting-place picture control module, be connected with described audio processing modules, be used for when the picture in the detected max volume of described audio processing modules current period meeting-place is not present in broadcast picture, the picture in the detected max volume of current period meeting-place is added in the broadcast picture; And, in the meeting-place of broadcast picture correspondence, when the picture playing duration that has the meeting-place to be detected the moment that becomes non-max volume meeting-place from the max volume meeting-place from its last time surpass to be set duration, the picture in corresponding meeting-place is removed from broadcast picture.
7. video conference MCU equipment as claimed in claim 6 is characterized in that, described meeting-place picture control module comprises:
Memory cell is used for storage meeting field information, and described meeting-place information comprises that meeting-place sign and corresponding meeting-place become the time started in non-max volume meeting-place, the maximum sustainable duration of picture from the max volume meeting-place;
Control unit, it is different with detected max volume meeting-place of last cycle to be used for working as the detected max volume of described audio processing modules current period meeting-place, and the last week detected max volume meeting-place information when not being present in described memory cell, the information stores in detected max volume meeting-place of described last cycle is arrived described memory cell, wherein the described time started in this meeting-place is the time of current time, otherwise pairing time started of sign in the detected max volume meeting-place of last cycle described in the described memory cell is updated to the time of current time; And, the described memory cell of cyclic check, when finding that the duration that wherein has the meeting-place to identify corresponding time started apart from the current time identifies the corresponding sustainable duration of picture maximum above this meeting-place, the described picture that surpasses the meeting-place of the corresponding maximum sustainable duration of picture of meeting-place sign is removed from broadcast picture, and the information in this meeting-place is deleted from described memory cell.
8. video conference MCU equipment as claimed in claim 7 is characterized in that, the maximum sustainable duration of the picture in each meeting-place of storing in the described memory cell is identical or different.
9. video conference MCU equipment as claimed in claim 6 is characterized in that, described meeting-place picture control module comprises:
The timer that each meeting-place is corresponding respectively is used for timing, and sends timeout signal when timing is overtime;
Control unit, be connected with the timer in each meeting-place, be used for working as described audio processing modules current period detected max volume meeting-place and detected max volume meeting-place of last cycle not simultaneously, under the timer situation about not starting in detected max volume meeting-place the last week, start this timer, otherwise restart this timer; And when receiving the timeout signal of timer, the picture in meeting-place that will be corresponding with the timer that sends this timeout signal is removed from broadcast picture.
10. video conference MCU equipment as claimed in claim 9 is characterized in that the timing duration of each timer is identical or different.
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| CN102843540A (en) * | 2011-06-20 | 2012-12-26 | 宝利通公司 | Automatic camera selection for videoconference |
| CN103414875A (en) * | 2013-07-26 | 2013-11-27 | 国家电网公司 | Method for uniformly controlling conference scene showing of video conference system |
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| CN112312224A (en) * | 2020-04-30 | 2021-02-02 | 北京字节跳动网络技术有限公司 | Information display method and device and electronic equipment |
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