CN102883130B - The control method and device in telepresence system meeting-place - Google Patents
The control method and device in telepresence system meeting-place Download PDFInfo
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- CN102883130B CN102883130B CN201110199278.2A CN201110199278A CN102883130B CN 102883130 B CN102883130 B CN 102883130B CN 201110199278 A CN201110199278 A CN 201110199278A CN 102883130 B CN102883130 B CN 102883130B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/14—Systems for two-way working
- H04N7/15—Conference systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/40—Support for services or applications
- H04L65/403—Arrangements for multi-party communication, e.g. for conferences
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/40—Support for services or applications
- H04L65/403—Arrangements for multi-party communication, e.g. for conferences
- H04L65/4038—Arrangements for multi-party communication, e.g. for conferences with floor control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/42—Systems providing special services or facilities to subscribers
- H04M3/56—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities
- H04M3/567—Multimedia conference systems
Abstract
The invention discloses a kind of control method and device in telepresence system meeting-place.This method includes：MCU receives the control message in telepresence system meeting-place, wherein, the positional information in meeting-place of the multimedia of control in need where it is carried in the control message；MCU pairs of multimedia corresponding with above-mentioned positional information performs control operation corresponding with the control message.The multimedia of telepresence system diverse location is controlled by the invention it is possible to realize.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of control method and device in telepresence system meeting-place.
Background technology
Telepresence system (telepresence) is the video conferencing system for instigating participant to have presence on the spot in person
System, have to provide compared to conventional video conference system and listen sound to distinguish position, man-size image, Eye contact effect, more
The advantages of smooth motion and distal end participant accurate limbs behavior.Telepresence system meeting-place is different from traditional meeting electricity
Depending on meeting-place used, typically there are single screen, double screen, three screens, point of multi-screen, wherein, screen refers to for the big aobvious of distant place meeting-place to be presented
Show device, a screen includes a display, often screen corresponding sound and/or video media all the way.
Telepresence system is developed by traditional video conferencing, and in actual use, traditional video conferencing control is big
Part is all controlled by terminal, and telepresence system realizes control of the meeting-place to meeting, and Conference control can be made simpler,
The ease for use of raising system, can not in the H245 conference control messages that the meeting-place defined in H323 agreements is controlled to meeting
The positional information for the screen being controlled is specified, applies it to telepresence system meeting-place, because telepresence system can place
Not in original video conferencing meeting-place, it is necessary to transmit Multichannel audio/video media, therefore, using the original H245 meetings of H323 agreements
It can not be clearly which audio/video media is controlled to discuss control message, so as to realize that meeting-place is controlled to meeting
System.
The content of the invention
It is a primary object of the present invention to provide a kind of control method and device in telepresence system meeting-place, at least to solve
Certainly above mentioned problem.
According to an aspect of the invention, there is provided a kind of control method in telepresence system meeting-place, including：MCU connects
The control message in telepresence system meeting-place is received, wherein, the multimedia of control in need is carried in the control message where it
Meeting-place in positional information；MCU pairs of multimedia corresponding with above-mentioned positional information performs control corresponding with the control message
Operation.
Preferably, the control message in the MCU reception telepresence systems meeting-place includes：First meeting-place is sent to its MCU
The control message；The MCU in first meeting-place receives the control message, judges the control message request control
Controlled conference places where the multimedia whether the meeting-place for being this grade of MCU, if it is, the MCU by first meeting-place
Perform the control operation；If it is not, then the control message is passed to the MCU of the controlled conference places, the controlled meeting
The MCU of field receives the control message, and the control operation is performed by the MCU of the controlled conference places.
Preferably, if the controlled conference places be first meeting-place where this grade of MCU under meeting-place, described first
After the MCU in meeting-place performs the control operation, methods described also includes：The MCU in first meeting-place is to described
First meeting-place returns to the first control response message, wherein, carry the control operation in the first control response message
As a result；If the controlled conference places are not the meeting-place under this grade of MCU where first meeting-place, in the institute of the controlled conference places
After stating the MCU execution control operation, methods described also includes：The MCU of the controlled conference places is to first meeting-place
The MCU return the second control response message, wherein, carry the control operation in the second control response message
And the positional information needed in multimedia meeting-place where it for controlling as a result；The MCU in first meeting-place is received
The second control response message, and the second control response message is transmitted to first meeting-place.
Preferably, the second control response message in the meeting-place control response message of H245 protocol definitions by increasing
For indicating that the field of the positional information in the multimedia meeting-place where it for needing to control is realized.
Preferably, the control message is described for indicating by increasing in the meeting-place control message of H245 protocol definitions
The field of positional information in the multimedia meeting-place where it for needing to control is realized.
Preferably, the control message includes：It is long-range that broadcast message is presented；Described MCU pairs corresponding with the positional information
Multimedia perform corresponding with control message control operation and include：The MCU searches long-range present and broadcast the message
Ask the meeting-place being broadcasted；The MCU judge described in the meeting-place that is broadcasted whether the meeting-place for being this grade of MCU, if it is, judging
Whether multimedia corresponding with the positional information is included in the meeting-place being broadcasted, if it is, will believe with the position
Multi-media broadcast corresponding to breath is multicast to all terminals of participant；If the meeting-place being broadcasted is subordinate MCU meeting-place, by institute
State the long-range broadcast message that presents and pass to the subordinate MCU, whether included in the meeting-place being broadcasted described in the subordinate MCU judgements
Multimedia corresponding with the positional information, if it is, multi-media broadcast corresponding with the positional information is multicast into participant
All terminals.
Preferably, the control message includes：Message is seen in long-range presentation choosing, wherein, the long-range presentation choosing is seen in message
Carry choosing and see the destination locations information in meeting-place and the selected multimedia positional information in source for seeing meeting-place；Described MCU pairs and institute
Stating multimedia execution control operation corresponding with the control message corresponding to positional information includes：The MCU searches the quilt
Meeting-place is seen in choosing；The MCU judge it is described it is selected see whether meeting-place is this grade of MCU meeting-place, if it is, judging described to be chosen see
Whether multimedia corresponding with the multimedia positional information in the source is included in meeting-place, if it is, will be with the source multimedia
Positional information corresponding to multimedia be switched to participant terminal corresponding with the destination locations information；If described be chosen see meeting
Field is subordinate MCU meeting-place, then the long-range presentation choosing is seen into message transmission judges institute to the subordinate MCU, the subordinate MCU
State it is selected see in meeting-place whether include multimedia corresponding with the multimedia positional information in the source, if it is, will with it is described
Multimedia corresponding to the multimedia positional information in source is switched to participant terminal corresponding with the destination locations information.
According to another aspect of the present invention, there is provided a kind of control device in telepresence system meeting-place, including：Receive mould
Block, for receiving the control message in telepresence system meeting-place, wherein, more matchmakers of control in need are carried in the control message
Positional information in body meeting-place where it；Execution module, for pair multimedia execution corresponding with the positional information and an institute
State control operation corresponding to control message.
Preferably, described device also includes：Respond module, for returning to control response to the sender of the control message
Message, wherein, the result of the control operation is carried in the control response message, if the sender of the control message
For higher level MCU, then the position in the multimedia meeting-place where it for needing to control also is carried in the control response message
Confidence ceases.
Preferably, the control response message of the positional information is carried by being controlled in the meeting-place of H245 protocol definitions
Increase in response message processed for indicating that the field of the multimedia positional information for needing to control is realized.
Preferably, the control message is described for indicating by increasing in the meeting-place control message of H245 protocol definitions
The field for the multimedia positional information for needing to control is realized.
By the present invention, using the multimedia position that carrying needs control in the control message in telepresence system meeting-place
Confidence ceases so that MCU can obtain the position where the multimedia for needing to control, and use H323 agreements original so as to solve
H245 conference control messages can not clearly be that audio/video media where are controlled, and be in remotely so as to realize
The problem of meeting-place control of existing system, and then can realize and the multimedia of telepresence system diverse location is controlled.
Brief description of the drawings
Accompanying drawing described herein is used for providing a further understanding of the present invention, forms the part of the application, this hair
Bright schematic description and description is used to explain the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is the flow chart of the control method in telepresence system meeting-place according to embodiments of the present invention；
Fig. 2 is a kind of networking schematic diagram of telepresence system according to embodiments of the present invention；
Fig. 3 is the flow chart of according to embodiments of the present invention one telepresence system single-stage MCU Broadcasting Controls；
Fig. 4 is the flow chart of according to embodiments of the present invention two telepresence system multistage MCU Broadcasting Controls；
Fig. 5 is that the flow chart of control is seen according to embodiments of the present invention three single-stage MCU choosings；
Fig. 6 is that the flow chart of control is seen according to embodiments of the present invention four multistage MCU choosings；
Fig. 7 is the structural representation of the control device in telepresence system meeting-place according to embodiments of the present invention；
Fig. 8 is the structural representation of the control device in telepresence system meeting-place according to the preferred embodiment of the invention.
Embodiment
Describe the present invention in detail below with reference to accompanying drawing and in conjunction with the embodiments.It should be noted that do not conflicting
In the case of, the feature in embodiment and embodiment in the application can be mutually combined.
Fig. 1 is the flow chart of the control method in telepresence system meeting-place according to embodiments of the present invention, as shown in figure 1,
Mainly include the following steps that：
Step S102, multipoint control unit (Micro Control Unit, referred to as MCU) receive telepresence system meeting
The control message of field, wherein, the position letter in meeting-place of the multimedia of control in need where it is carried in the control message
Breath；
For example, in the networking structure of the telepresence system shown in Fig. 2, main MCU controls three meeting-place：Meeting-place 1, meeting-place
2 and meeting-place 3, wherein, meeting-place 1 is three screens (left screen, middle screen and right screen) meeting-place, i.e., comprising three participant terminals, meeting-place 2 is also three
Shield (left screen, middle screen and right screen) meeting-place, comprising three participant terminals, meeting-place 3 is single screen meeting-place.Two meeting-place are controlled from MCU：Meeting
Field 4 and meeting-place 5, wherein, meeting-place 4 and meeting-place 5 are three screen meeting-place.Meeting-place 1 can send telepresence system meeting-place to main MCU
Control message, if necessary to control meeting-place 2 middle screen multimedia, then can carry instruction in the control message needs to control
Multimedia in meeting-place 2 positional information (indicate the multimedia be meeting-place 2 middle screen, that is to say, that the multimedia is meeting
The multimedia on road where the middle screen of field 2), for example, each screen in meeting-place 2 can be numbered, represent left with 0,1,2 respectively
Screen, middle screen and right screen, the then positional information in meeting-place of the multimedia that the needs carried in the control message control where it
For " 1 ".
, wherein it is desired to the multimedia of control can include but is not limited to：Audio frequency media and/or video media, LSD media etc.
The various media that traditional video conferencing is included, i.e. audio or image.
Wherein, the above-mentioned control message that MCU is received can directly be that the meeting-place that is controlled by it is sent or thereon
Level MCU is sent, for example, the first meeting-place can be sent when needing to carry out multimedia control to the meeting-place in meeting to its MCU
The control message, the MCU receive the control message, judge the controlled conference places where the multimedia of control message request control
Whether the meeting-place for being this grade of MCU, if it is, as corresponding with the control message control operation of MCU processing；If it is not,
The control message is then passed to the MCU where controlled conference places, is received as the MCU where controlled conference places and handles the control and disappear
Breath.
In a preferred embodiment of the embodiment of the present invention, above-mentioned control message can be by H245 protocol definitions
Meeting-place control message in increase for indicating that the field of multimedia positional information for needing to control is realized.For example, can
With the conference request (ConferenceRequest) to H245 protocol definitions, meeting response message
(ConferenceResponse), conference commands (ConferenceCommand), meeting instruction
Etc. (ConferenceIndication) message is extended, increase it is long-range broadcast is presented, long-range present cancels broadcast, is in remotely
Now choosing such as sees at the telepresence system control message, wherein, telepresence system control message includes but are not limited to remotely present
Broadcast is cancelled in broadcast, remotely presentation and long-range presentation choosing is seen, can also be other associated control messages.Telepresence system control
The principle of message definition processed is the terminal broadcast (makeTerminalBroadcaster) defined in H245 agreements, choosing is seen
Etc. (sendThisSource) positional information description is expanded on message basis.
Step S104, described MCU pairs multimedia corresponding with the positional information perform corresponding with the control message
Control operation.
In a preferred embodiment of the embodiment of the present invention, after MCU performs above-mentioned control operation, MCU may be used also
To return to control response message to the sender of the control message, wherein, carry control operation in the control response message
As a result.Preferably, if the sender of the control message is that (i.e. control message is sent to controlled conference places to higher level MCU through higher level MCU
MCU), then the position letter in multimedia meeting-place where it of above-mentioned needs control can also be carried in the control response message
Breath.For example, if the control message that MCU is received comes from its meeting-place controlled, control response message is returned to this by MCU
Meeting-place, if the control response message is returned to higher level MCU by the control message that MCU is received from higher level MCU, MCU, by
Higher level MCU returns to the control response message in the meeting-place for sending the control message.
In a preferred embodiment of the embodiment of the present invention, above-mentioned control response message passes through in H245 protocol definitions
Meeting-place control response message in increase for indicate the control of above-mentioned needs multimedia meeting-place where it in positional information
Field realize.
In the preferred embodiment of the embodiment of the present invention, for different control messages, MCU performs different controlling streams
Journey.
If for example, the control message includes：It is long-range that broadcast message is presented, then MCU pairs it is corresponding with the positional information
Multimedia perform corresponding with control message control operation and mainly may comprise steps of：
Step 1, MCU searches the long-range meeting-place that broadcast message request is presented and is broadcasted；
Step 2, MCU judge described in the meeting-place that is broadcasted whether the meeting-place for being this grade of MCU, if it is, perform step 3,
If it is not, then perform step 5；
Step 3, whether multimedia corresponding with the positional information is included in the meeting-place being broadcasted described in judgement, if
It is then to perform step 4；
Step 4, multi-media broadcast corresponding with the positional information is multicast to all terminals of participant；
Step 5, the long-range broadcast message that presents is passed into the subordinate MCU, be broadcasted described in subordinate MCU judgements
Meeting-place in whether include multimedia corresponding with the positional information, if it is, will be corresponding with the positional information more
All terminals of the media broadcast to participant.
If the control message includes：Message is seen in long-range presentation choosing, wherein, the long-range presentation choosing, which is seen in message, to be carried
There is choosing to see the destination locations information in meeting-place and the selected multimedia positional information in source for seeing meeting-place.Then MCU pairs and the position
Multimedia corresponding to information performs control operation corresponding with the control message and may comprise steps of：
Step 1, MCU lookups are described is chosen see meeting-place；
Step 2, MCU judge it is described it is selected see whether meeting-place is this grade of MCU meeting-place, if it is, judging described be chosen
See in meeting-place and whether include multimedia corresponding with the multimedia positional information in the source, if it is, will be with the more matchmakers in the source
Multimedia corresponding to the positional information of body is switched to participant terminal corresponding with the destination locations information；
Step 3, the selected meeting-place for seeing that meeting-place is subordinate MCU, then see message transmission to institute the long-range presentation choosing
Subordinate MCU is stated, the subordinate MCU judges described whether be chosen see in meeting-place comprising corresponding with the multimedia positional information in the source
Multimedia, if it is, multimedia corresponding with the multimedia positional information in the source is switched to and the destination locations
Participant terminal corresponding to information.
If the control message includes：Remotely present and cancel broadcast message, wherein, the long-range presentation is cancelled broadcast and disappeared
The multimedia positional information for being cancelled broadcast is carried in breath.Then MCU pairs of multimedia corresponding with the positional information performs
Control operation corresponding with the control message may comprise steps of：
Step 1, the meeting-place of broadcast is cancelled described in MCU lookups；
Step 2, whether the meeting-place for broadcast being cancelled described in MCU judgements is this grade of MCU meeting-place, if it is, judging institute
State in the meeting-place for be cancelled broadcast and whether to include multimedia corresponding with the multimedia positional information, if it is, cancelling
Multimedia broadcast corresponding with the multimedia positional information；
Step 3, if the meeting-place for being cancelled broadcast is subordinate MCU meeting-place, the long-range presentation choosing is seen and disappeared
Breath passes to the subordinate MCU, the subordinate MCU judge described in be cancelled in the meeting-place of broadcast and whether include and the multimedia
Positional information corresponding to multimedia, if it is, cancelling multimedia broadcast corresponding with the multimedia positional information.
By the above method provided in an embodiment of the present invention, when meeting-place is wanted to be controlled active conference, pass through meeting
Field gives MCU to send corresponding telepresence system control message, for example long-range present is broadcasted, after MCU receives message, according to tool
Body message content performs control action, and implementing result is fed back into meeting-place.In subtended conference, if meeting-place is to non-level meeting
Meeting-place is controlled, and this grade of MCU needs the telepresence system control message that meeting-place is sent being transmitted to where controlled conference places
MCU, MCU performs corresponding control command where controlled conference places, while implementing result is fed back into execution control by higher level MCU
The meeting-place of action.The deficiency that H323 telepresence systems meeting-place can not be controlled to meeting is compensate for, has reached meeting-place to meeting
The effect that the audio/video code stream of view diverse location flexibly controls, and telepresence system subtended conference can be controlled,
Improve the ease for use and Consumer's Experience of telepresence system.
Below by taking the networking structure of the telepresence system shown in Fig. 2 as an example, to technical side provided in an embodiment of the present invention
Case illustrates.
Embodiment one
The present embodiment asks to illustrate exemplified by screen image in three screen meeting-place 2 of broadcast by three screen meeting-place 1.
The present embodiment H245 agreements makeTerminalBroadcaster and
Extended on the basis of makeTerminalBroadcasterResponse message, increased in the two control messages
Location expression information Location, define tpsmakeTerminalBroadcaster and
TpsmakeTerminalBroadcasterResponse message.Wherein, increased Location is broadcasted image for expression
Positional information in meeting-place where it, 0 expression can be defined as and broadcast all screen images, 1 represents to broadcast left screen image, and 2 represent
Screen image in broadcast, 3 represent to broadcast right screen images, also, if adding new screen in the meeting-place, can the value expanded
Exhibition.
In a preferred embodiment of the present embodiment, tpsmakeTerminalBroadcaster and
TpsmakeTerminalBroadcasterResponse can be defined as：
Fig. 3 is the flow chart being controlled in the present embodiment to telepresence system meeting-place, as shown in figure 3, mainly including
Following steps：
Step 301, meeting-place 1 sends tpsmakeTerminalBroadcaster (long-range that broadcast is presented) message to main MCU,
Terminal iidentification (TerminalLabel) in the message is the TerminalLabel for being broadcasted terminal, is meeting-place in the present embodiment
2 TerminalLabel；In addition, the Location increased newly in the message is the position letter for being broadcasted image meeting-place where it
Breath, to indicate which image MCU needs to broadcast, due to being the middle screen for wanting broadcast site 2, therefore, the message in the present embodiment
Middle Location value is 2.
Step 302, main MCU receives above-mentioned tpsmakeTerminalBroadcaster message, according to TerminalLabel
Lookup is broadcasted meeting-place, wherein it is possible to there is following three kinds of results：It is this grade of MCU not find and be broadcasted meeting-place, be broadcasted meeting-place
Meeting-place and to be broadcasted meeting-place be non-level MCU meeting-place.
If not finding and being broadcasted terminal, into step 303, tpsmakeTerminalBroadcaste is returned to meeting-place 1
RResponse (long-range that broadcast response is presented) message, makeTerminalBroadcasterResponse fields therein are
DeniedMakeTerminalBroadcaster, instruction broadcast failure.
If it is this grade of MCU meeting-place to be broadcasted meeting-place, main MCU is needed on the basis of original broadcast flow, and lookup is broadcasted
Whether meeting-place includes the video of Location positions, if entering step 303 not comprising if, is returned to meeting-place 1
TpsmakeTerminalBroadcasterResponse message, makeTerminalBroadcasterResponse therein
Field is deniedMakeTerminalBroadcaster；If comprising main MCU will be broadcasted the Location positions of terminal
The broadcast of images put enters step 303 to the Location positions of all terminals of participant, is returned to meeting-place 1
TpsmakeTerminalBroadcasterResponse message, makeTerminalBroadcasterResponse therein
Field is grantedMakeTerminalBroadcaster, and instruction is broadcasted successfully, and in the present embodiment, main MCU is by meeting-place 2
Screen image is switched to meeting-place 1, shielded from the cascade of MCU cascade ports.
If situation of the meeting-place for non-level MCU meeting-place is broadcasted, according to the long-range presentation shown in example below two
System multistage MCU Broadcasting Control flow processings.
Step 303, main MCU returns tpsmakeTerminalBroadcasterResponse message, Location to meeting-place 1
Value be the Location of tpsmakeTerminalBroadcaster institutes band value, makeTerminalBroadcasterRes
Ponse value is depending on the result in step 302.
Flow terminates.
If use existing H245 makeTerminalBroadcaster/makeTerminalBroadcasterResp
Onse message,
Due to not described in message comprising positional information, so after main MCU receives makeTerminalBroadcaster message, nothing
Method knows left screen image, middle screen image, right screen image or all screen images of broadcast site 2.And in the present embodiment by
The image of makeTerminalBroadcaster increase description broadcast is being broadcasted the location expression information in meeting-place so that MCU can
To obtain the middle screen image for needing broadcast site 2.
Embodiment two
The present embodiment illustrates by taking screen image in the broadcast site 4 of meeting-place 1 as an example, wherein, tpsmakeTerminalBroa
The description of dcaster, tpsmakeTerminalBroadcasterResponse message is consistent with described in embodiment one.
Fig. 4 is the flow chart being controlled in the present embodiment to telepresence system meeting-place, as shown in figure 4, in this implementation
Long-range presentation meeting-place is controlled in example and mainly included the following steps that：
Step 401, it is identical with step 301, in the present embodiment in tpsmakeTerminalBroadcaster
TerminalLabel is the TerminalLabel in meeting-place 4, due to being the middle screen for wanting broadcast site 4, so Location value
For 2.
Step 402, main MCU receives tpsmakeTerminalBroadcaster message, is searched according to TerminalLabel
Meeting-place is broadcasted, if it is non-level MCU meeting-place to be broadcasted meeting-place, into the 404th step, otherwise performs step 403；
Step 403, it is equal to step 302.
Step 404, main MCU, which gives tpsmakeTerminalBroadcaster message transmissions, is broadcasted terminal place MCU,
It is from MCU in the present embodiment.
Step 405, the processing of tpsmakeTerminalBroadcaster message is received from MCU, it is handled and step 402
It is similar.Broadcasted in the present embodiment from MCU by the middle screen image in meeting-place 4.
Step 406, tpsmakeTerminalBroadcasterResponse message is sent from MCU to main MCU.This implementation
In the tpsmakeTerminalBroadcasterResponse message sent in example from MCU to main MCU, Location value is
2, makeTerminalBroadcasterResponse grantedMakeTerminalBroadcaster.
Step 407, main MCU receives tpsmakeTerminalBroadcasterResponse message, by this message transparent transmission
To meeting-place 1.
Step 408, in the tpsmakeTerminalBroadcasterResponse message that main MCU is received
MakeTerminalBroadcasterResponse is grantedMakeTerminalBroadcaster, and main MCU will be from MCU
Location positions broadcast of images to all meeting-place in main MCU meetings.
Flow terminates.
Embodiment three
The present embodiment is seen in meeting-place 2 by the choosing of meeting-place 1 and illustrated exemplified by screen image.The present embodiment is in H245 agreements
On the basis of sendThisSource (request message is seen in choosing), sendThisSourceResponse (response message is seen in choosing) message
Add location expression information sourceLocation (source position, i.e., the position in the selected multimedia meeting-place where it seen
Information), destinationLocation, define tpssendThisSource, tpssendThisSourceResponse and disappear
Breath.
In a preferred embodiment of the present embodiment, sourceLocation types are integer, and implication is seen to be selected
The source location information in meeting-place, wherein, 0 represents all screens, and 1 represents left screen, shields in 2 expressions, and 3 represent right screens, expansible；
DestinationLocation types are integer, and implication represents all screens, 1 table for the selected destination locations information for seeing meeting-place, 0
Show left screen, shield in 2 expressions, 3 represent right screens, expansible.The message, which explicitly understands, to be needed to see meeting-place by selected
The image of sourceLocation positions is switched to the destinationLocation screen location drawing pictures that meeting-place is seen in choosing, for example,
In one preferred embodiment of the present embodiment, tpsSendThisSource and tpsSendThisSourceResponse can be with
It is defined as follows：
Fig. 5 is the flow chart that the control of telepresence system meeting-place is performed in the present embodiment, as shown in figure 5, can mainly wrap
Include following steps：
Step 501, meeting-place 1 sends tpsSendThisSourceRequest message to main MCU, wherein,
It is the selected TerminalLabel for seeing meeting-place corresponding to TerminalLabel, sourceLocation is the selected source for seeing meeting-place
Positional information, destinationLocation see meeting-place destination locations information to be selected.In the present embodiment, due to shielding in meeting-place 1
The middle screen image for seeing meeting-place 2 is selected, therefore, TerminalLabel is meeting-place 2 in tpsSendThisSourceRequest message
TerminalLabel, sourceLocation 2, destinationLocation 2.
Step 502, after main MCU receives tpsSendThisSourceRequest message, found according to terminalLabel
It is selected to see meeting-place, for example, it may be possible to there is following three kinds of results：Do not find and be chosen see meeting-place, be chosen see that meeting-place is this grade of MCU meeting
Field, it is chosen see that meeting-place is non-level MCU meeting-place.
Wherein, it is chosen see meeting-place if do not searched out, is directly entered step 503, is sent to meeting-place 1
TpsSendThisSourceResponse message, sendThisSourceResponse therein are
deniedSendThisSource。
If selected see that meeting-place is this grade of MCU meeting-place, main MCU is then in tpsSendThisSourceRequest message
The validity of sourceLocation and destinationLocation values is judged, if selected see that meeting-place is present
The image of sourceLocation screens position, choosing see that meeting-place has destinationLocation screen location drawing pictures, and MCU then recognizes
Effective for sourceLocation and destinationLocation values, main MCU is then by selected meeting-place sourceLocation screens
The image of position is switched to choosing and sees meeting-place destinationLocation screens position, and enters step 503, is sent to meeting-place 1
TpsSendThisSourceResponse message, the sendThisSourceResponse in the message are
grantedSendThisSource；If sourceLocation and destinationLocation values are invalid, enter step
Rapid 503, give meeting-place 1 to send tpsSendThisSourceResponse message, in the message
SendThisSourceResponse is deniedSendThisSource.
If selected see that meeting-place is non-level MCU meeting-place, the telepresence system described according to following example IVs is more
Level MCU choosings see that control flow is handled.
In the present embodiment, screen image in meeting-place 2 has been switched in meeting-place 1 by main MCU to be shielded.
Step 503, MCU master gives meeting-place 1 to send tpsSendThisSourceResponse message, in message
SourceLocation and destinationLocation value is the same as in tpsSendThisSource message
SourceLocation and destinationLocation values are identical, sendThisSourceResponse then bases in message
Depending on the result of step 502.
Flow terminates.
If using existing H245 sendThisSource, sendThisSourceResponse message, due to message
In do not described comprising positional information, so after main MCU receives sendThisSource message, can not know by meeting-place 2 that
One location drawing picture is switched to which position in meeting-place 1.It is selected by being indicated in tpssendThisSource in the present embodiment
The source location information seen, and the destination locations information that choosing is seen, the specific multimedia all the way in meeting-place is cut so as to realize
Give certain specific screen terminal in another meeting-place.
Example IV
The present embodiment illustrates so that three screen meeting-place 4 are seen in the choosing of three screen meeting-place 1 as an example, in the present embodiment
TpsSendThisSourceRequest message and tpsSendThisSourceResponse message definitions in embodiment three with determining
Justice is identical, specifically repeats no more.
Fig. 6 is the flow chart for seeing control in the present embodiment to the choosing of telepresence system meeting-place, as shown in fig. 6, mainly including
Following steps：
Step 601, it is identical with step 501.
In the present embodiment, the middle screen choosing in meeting-place 1, which is seen in meeting-place 4, shields, in tpsSendThisSourceRequest message
TerminalLabel is the TerminalLabel, sourceLocation 2, destinationLocation 2 in meeting-place 4.
Step 602, main MCU receives tpsSendThisSourceRequest message, according in message
TerminalLabel come search it is selected see meeting-place, if selected see that meeting-place be non-level MCU meeting-place, main MCU judgements need by
TpsSendThisSourceRequest message is sent to the selected MCU seen where meeting-place, is main MCU in the present embodiment by message
It is sent to from MCU, performs step 604, otherwise handled according to step 502, and perform step 603.
Step 603, it is identical with step 503.
Step 604, tpsSendThisSourceRequest message is sent to from MCU by main MCU.
Step 605, it is similar to step 602, screen image in meeting-place 4 is switched in MCU master from MCU in the present embodiment and shielded.
Step 606, it is similar to step 503, from MCU by tpsSendThisSourceResponse message in the present embodiment
It is sent to main MCU.
Step 607, main MCU receives the tpsSendThisSourceResponse message sent from MCU, and directly this disappears
Breath passes to meeting-place 1.Simultaneously to the value of sendThisSourceResponse in tpsSendThisSourceResponse message
Judged, if sendThisSourceResponse is grantedSendThisSource, into step 609；If
SendThisSourceResponse is deniedSendThisSource, and flow terminates.
Step 608, main MCU is according to the tpsSendThisSourceResponse message sent from MCU, will be from
The image of MCUsourceLocation positions is switched on the ldestinationLocation positions of meeting-place.
Flow terminates.
Fig. 7 is the structural representation of the control device in telepresence system meeting-place according to embodiments of the present invention, the device
Positioned at MCU, as shown in fig. 7, the device can include：Receiving module 10, the control for receiving telepresence system meeting-place disappear
Breath, wherein, the positional information in multimedia meeting-place where it of control in need is carried in the control message；Execution module 20
It is connected with receiving module 10, control corresponding with the control message is performed for a pair multimedia corresponding with the positional information
Operation.
In a preferred embodiment of the embodiment of the present invention, as shown in figure 8, the device can also include：Respond mould
Block 30 is connected with execution module 20, for returning to control response message to the sender of the control message, wherein, the control
The result of the control operation is carried in response message, it is preferable if the sender of the control message is higher level MCU,
The positional information in the multimedia meeting-place where it for needing to control then also is carried in the control response message.
In a preferred embodiment of the embodiment of the present invention, the above-mentioned control response for carrying the positional information disappears
Breath can be by increasing for indicating the multimedia for needing to control in the meeting-place control response message of H245 protocol definitions
Positional information field realize.
In another preferred embodiment of the embodiment of the present invention, above-mentioned control message can be by determining in H245 agreements
Increase in the meeting-place control message of justice for indicating that the field of the multimedia positional information for needing to control is realized.
In the preferred embodiment of the embodiment of the present invention, the modules of the device can embodiment according to the method described above
Description perform control process, specifically repeat no more.
As can be seen from the above description, in embodiments of the present invention, when meeting-place is wanted to be controlled active conference
When, corresponding telepresence system control message is sent to MCU by meeting-place, for example long-range present is broadcasted, MCU receives message
Afterwards, control action is performed according to specific message content, and implementing result is fed back into meeting-place.In subtended conference, if meeting-place pair
Non- level meeting meeting-place is controlled, and this grade of MCU needs the telepresence system control message that meeting-place is sent being transmitted to controlled
MCU where meeting-place, MCU performs corresponding control command where controlled conference places, while implementing result is fed back to by higher level MCU
Perform the meeting-place of control action.The deficiency that H323 telepresence systems meeting-place can not be controlled to meeting is compensate for, is reached
The effect that meeting-place is flexibly controlled the audio/video code stream of meeting diverse location, and can be to telepresence system subtended conference
It is controlled, improves the ease for use and Consumer's Experience of telepresence system.
Obviously, those skilled in the art should be understood that above-mentioned each module of the invention or each step can be with general
Computing device realize that they can be concentrated on single computing device, or be distributed in multiple computing devices and formed
Network on, alternatively, they can be realized with the program code that computing device can perform, it is thus possible to they are stored
Performed in the storage device by computing device, and in some cases, can be with different from shown in order execution herein
The step of going out or describing, they are either fabricated to each integrated circuit modules respectively or by multiple modules in them or
Step is fabricated to single integrated circuit module to realize.So, the present invention is not restricted to any specific hardware and software combination.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (8)
- A kind of 1. control method in telepresence system meeting-place, it is characterised in that including：Multipoint control unit MCU receives the control message in telepresence system meeting-place, wherein, being carried in the control message needs Positional information in meeting-place of the multimedia to be controlled where it；Described MCU pairs multimedia corresponding with the positional information performs control operation corresponding with the control message；Wherein, the control message is used to indicate described to need to control by the meeting-place control message of H245 protocol definitions increasing The field of positional information in multimedia meeting-place where it of system is realized；The control message that the MCU receives telepresence system meeting-place includes：First meeting-place sends the control to its MCU and disappeared Breath；The MCU in first meeting-place receives the control message, judges the multimedia of the control message request control The controlled conference places at place whether the meeting-place for being this grade of MCU, if it is, performing the control by the MCU in first meeting-place System operation；If it is not, then the control message is passed to the MCU of the controlled conference places, the MCU of the controlled conference places The control message is received, the control operation is performed by the MCU of the controlled conference places.
- 2. according to the method for claim 1, it is characterised in thatIf the meeting-place under this grade of MCU of the controlled conference places where first meeting-place, described in first meeting-place After MCU performs the control operation, methods described also includes：The MCU in first meeting-place returns to first meeting-place The first control response message is returned, wherein, the result of the control operation is carried in the first control response message；If the controlled conference places are not the meeting-place under this grade of MCU where first meeting-place, in the institute of the controlled conference places After stating the MCU execution control operation, methods described also includes：The MCU of the controlled conference places is to first meeting-place The MCU return the second control response message, wherein, carry the control operation in the second control response message And the positional information needed in multimedia meeting-place where it for controlling as a result；The MCU in first meeting-place is received The second control response message, and the second control response message is transmitted to first meeting-place.
- 3. according to the method for claim 2, it is characterised in that the second control response message in H245 agreements by determining Increase in the meeting-place control response message of justice for indicating the position letter in the multimedia meeting-place where it for needing to control The field of breath is realized.
- 4. according to the method in any one of claims 1 to 3, it is characterised in that the control message includes：It is long-range to present Broadcast message；Described MCU pairs multimedia corresponding with the positional information, which performs control operation corresponding with the control message, to be included：The MCU searches the long-range meeting-place that broadcast message request is presented and is broadcasted；The MCU judge described in the meeting-place that is broadcasted whether the meeting-place for being this grade of MCU, if it is, being broadcasted described in judging Whether multimedia corresponding with the positional information is included in meeting-place, if it is, will more matchmakers corresponding with the positional information Body is broadcast to all terminals of participant；If the meeting-place being broadcasted is subordinate MCU meeting-place, by it is described it is long-range present broadcast message pass to it is described under Whether level MCU, the subordinate MCU include multimedia corresponding with the positional information in the meeting-place that is broadcasted described in judging, such as Fruit is that multi-media broadcast corresponding with the positional information is then multicast to all terminals of participant.
- 5. according to the method in any one of claims 1 to 3, it is characterised in that the control message includes：It is long-range to present Message is seen in choosing, wherein, the long-range presentation choosing sees in message that carrying choosing sees the destination locations information in meeting-place and the selected meeting of seeing The multimedia positional information in source of field；Described MCU pairs multimedia corresponding with the positional information, which performs control operation corresponding with the control message, to be included：The MCU lookups are described to be chosen see meeting-place；The MCU judge it is described it is selected see whether meeting-place is this grade of MCU meeting-place, if it is, judging described to be chosen see meeting-place In whether include multimedia corresponding with the multimedia positional information in the source, if it is, will be with the multimedia position in the source Multimedia corresponding to confidence breath is switched to participant terminal corresponding with the destination locations information；If the selected meeting-place for seeing that meeting-place is subordinate MCU, see message transmission to the subordinate the long-range presentation choosing MCU, the subordinate MCU judge described selected see in meeting-place whether include more matchmakers corresponding with the multimedia positional information in the source Body, if it is, multimedia corresponding with the multimedia positional information in the source is switched to and the destination locations information pair The participant terminal answered.
- A kind of 6. control device in telepresence system meeting-place, positioned at MCU, it is characterised in that described device includes：Receiving module, for receiving the control message in telepresence system meeting-place, wherein, carried in the control message in need Positional information in multimedia meeting-place where it of control；Execution module, control behaviour corresponding with the control message is performed for a pair multimedia corresponding with the positional information Make；Wherein, the control message is used to indicate described to need to control by the meeting-place control message of H245 protocol definitions increasing The field of positional information in multimedia meeting-place where it of system is realized；The receiving module is used for the control message for receiving telepresence system meeting-place, including：First meeting-place sends institute to its MCU State control message；The MCU in first meeting-place receives the control message, judges the institute of the control message request control State controlled conference places where multimedia whether the meeting-place for being this grade of MCU, if it is, being held by the MCU in first meeting-place The row control operation；If it is not, then the control message is passed to the MCU of the controlled conference places, the controlled conference places The MCU receive the control message, the control operation is performed by the MCU of the controlled conference places.
- 7. device according to claim 6, it is characterised in that described device also includes：Respond module, for the control The sender of message processed returns to control response message, wherein, the knot of the control operation is carried in the control response message Fruit, if the sender of the control message is higher level MCU, also being carried in the control response message described needs to control Multimedia meeting-place where it in positional information.
- 8. device according to claim 7, it is characterised in that carry the control response message of the positional information By increasing in the meeting-place control response message of H245 protocol definitions for indicating the multimedia position for needing to control The field of information is realized.
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| CN201110199278.2A CN102883130B (en) | 2011-07-15 | 2011-07-15 | The control method and device in telepresence system meeting-place |
| PCT/CN2012/077478 WO2013010428A1 (en) | 2011-07-15 | 2012-06-25 | Telepresence conference site control method and apparatus |
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| CN101583011A (en) * | 2009-05-27 | 2009-11-18 | 深圳华为通信技术有限公司 | Video conference control method and system, video conference network equipment and conference places |
| CN102082944A (en) * | 2009-11-30 | 2011-06-01 | 华为终端有限公司 | Conference control method, device and system containing tele-presence conference hall |
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| US7612793B2 (en) * | 2005-09-07 | 2009-11-03 | Polycom, Inc. | Spatially correlated audio in multipoint videoconferencing |
| CN100496117C (en) * | 2006-12-04 | 2009-06-03 | 中国联合通信有限公司 | Resource allocating method in video frequency conference |
| US20080316295A1 (en) * | 2007-06-22 | 2008-12-25 | King Keith C | Virtual decoders |
| NO332009B1 (en) * | 2008-12-12 | 2012-05-21 | Cisco Systems Int Sarl | Method of initiating communication connections |
| CN101867770A (en) * | 2010-05-26 | 2010-10-20 | 中兴通讯股份有限公司 | Method for obtaining remote seat position information and remote presentation system |
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| CN101583011A (en) * | 2009-05-27 | 2009-11-18 | 深圳华为通信技术有限公司 | Video conference control method and system, video conference network equipment and conference places |
| CN102082944A (en) * | 2009-11-30 | 2011-06-01 | 华为终端有限公司 | Conference control method, device and system containing tele-presence conference hall |
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