CN107979591A - A kind of audio-video terminal multichannel on-line control system and method - Google Patents
A kind of audio-video terminal multichannel on-line control system and method Download PDFInfo
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- CN107979591A CN107979591A CN201711131552.6A CN201711131552A CN107979591A CN 107979591 A CN107979591 A CN 107979591A CN 201711131552 A CN201711131552 A CN 201711131552A CN 107979591 A CN107979591 A CN 107979591A
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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
- H04L65/60—Network streaming of media packets
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/1607—Details of the supervisory signal
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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
- H04L65/1066—Session management
- H04L65/1073—Registration or de-registration
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Abstract
The invention discloses a kind of audio-video terminal multichannel on-line control system, including central controller, multiple audio-video terminals and multiple passages；The central controller includes：First location registration process module, for handling the channel registration information of audio-video terminal；Channel status update module is used to, when there is the reception of audio, video data bag, be updated channel status information maintenance；Offline judgment module is used for timing and active channel state is checked, once time-out puts active channel as the free time, registers and uses for audio-video terminal.In addition, the invention discloses a kind of audio-video terminal multichannel On-Line Control Method.The present invention can ensure that audio-video terminal shares transmission channel, effectively lifts user experience.
Description
Technical field
The present invention relates to field of communication technology, more particularly to a kind of audio-video terminal multichannel on-line control system and side
Method.
Background technology
In recent years, audio-video terminal conference system is widely used, and multiple audio-video terminals are distributed in different regions
Share and take limited transmission channel, the data of each passage need non-interfering transmission.Existing conference system needs people
The advanced row of channels configuration of fortification, audio-video terminal are transmitted according to the passage distributed into row information, it is impossible to realize automatic on-line shape
State updates.When there is new audio-video terminal to add, transmission channel or occupancy can be seized with original multiple audio-video terminals
New transmission channel；When original audio-video terminal exits conference system, it is impossible to the transmission channel of timely release busy, and need
Passage configuration is manually re-started, so that the waste that transmission channel resource will be caused.
The content of the invention
The present invention is directed to problems of the prior art, there is provided a kind of audio-video terminal multichannel on-line control system
And method, it can ensure that audio-video terminal shares transmission channel, effectively lifts user experience.
The technical solution that the present invention is proposed with regard to above-mentioned technical problem is as follows：
On the one hand, the present invention provides a kind of audio-video terminal multichannel on-line control system, including central controller, multiple
Audio-video terminal and multiple passages；
The central controller includes：
First location registration process module, the endpoint registration bag for being sent to audio-video terminal are handled, and to the sound
Video terminal feeds back response result；
Channel status update module, for the audio, video data bag sent according to audio-video terminal, to channel status information
It is updated maintenance；
Offline judgment module, checks active channel state for timing, once time-out puts active channel as sky
In the spare time, register for audio-video terminal and use.
The audio-video terminal includes：
Second location registration process module, for carrying out application for registration to passage, to the response result of the central controller into
Row processing；
Audio, video data bag sending module, the passage for being taken by oneself send audio, video data bag.
Further, the endpoint registration bag includes log-on message, the log-on message include physical address, priority and
Register channel number；
The first location registration process module is specifically used for：
Receive the endpoint registration bag that audio-video terminal is sent；
Extract log-on message；
Whether idle detect the corresponding passage of the registration channel number；
If idle, channel status table is updated, feeds back the response bag that succeeds in registration to the audio-video terminal, and terminate；
If not idle, whether the priority for detecting the audio-video terminal is higher than the former audio-video terminal of active channel,
If so, sending a warning message to the former audio-video terminal, channel status table is updated, is registered to audio-video terminal feedback
Work(response bag, and terminate, registration failure response bag otherwise is fed back to the audio-video terminal, and terminate.
Further, the second location registration process module is specifically used for：
Endpoint registration bag is sent to the central controller；
Judge whether to receive the response bag that the central controller is fed back；
If receiving response bag, judge whether to receive registration failure response bag or the response bag that succeeds in registration, if receiving described
Registration failure response bag, then it is off-line state to set this terminal, and is terminated, if receiving the response bag that succeeds in registration, is set
This terminal is presence, and is terminated, if not receiving the registration failure response bag or the response bag that succeeds in registration, is continued
Judge whether to receive response bag；
If not receiving response bag, judge whether time-out, if so, it is off-line state then to set this terminal, and terminate, otherwise
Continue to determine whether to receive response bag.
Further, the audio, video data bag includes channel information, and the channel information includes physical address, priority
With active channel number；The central controller, which is safeguarded, a channel status table, and the channel status table includes each passage
Channel number, the physical address of current audio-video terminal, priority and life span；
The channel status update module is specifically used for：
Receive the audio, video data bag that audio-video terminal is sent；
Extract channel information；
Judge whether the channel information is consistent with the information in the channel status table；
If consistent, the channel status table is updated, the life span for putting passage in the channel status table is maximum
Value, carries out the audio, video data bag unpacking processing, completes audio video transmission, and terminate；
If inconsistent, the audio, video data bag is abandoned, is sent out to the audio-video terminal for sending the audio, video data bag
Warning information is sent, and is terminated.
Further, the central controller, which is safeguarded, a channel status table, and the channel status table includes each logical
The channel number in road, the physical address of current audio-video terminal, priority and life span；
The offline judgment module is specifically used for：
Judge whether passage is online；
If online, judge whether the life span of passage is more than 0, if so, then the life span of control passage subtracts 1, more
New tunnel state table, and terminate, otherwise send a warning message to the audio-video terminal of active channel, channel status is set for sky
In the spare time, update channel status table, and terminates；
If not online, terminate.
On the other hand, the present invention provides a kind of audio-video terminal multichannel On-Line Control Method, can be applied to above-mentioned sound
In video terminal multichannel on-line control system, it is characterised in that the described method includes：
The central controller handles the endpoint registration bag that audio-video terminal is sent, and to the audio-video terminal
Feed back response result；
The audio, video data bag that the central controller is sent according to audio-video terminal, is updated channel status information
Safeguard；
The central controller timing checks active channel state, once time-out puts active channel as the free time,
Register and use for audio-video terminal.
Further, the endpoint registration bag includes log-on message, the log-on message include physical address, priority and
Register channel number；
The central controller handles the endpoint registration bag that audio-video terminal is sent, and to the audio-video terminal
Response result is fed back, is specifically included：
Receive the endpoint registration bag that audio-video terminal is sent；
Extract log-on message；
Whether idle detect the corresponding passage of the registration channel number；
If idle, channel status table is updated, feeds back the response bag that succeeds in registration to the audio-video terminal, and terminate；
If not idle, whether the priority for detecting the audio-video terminal is higher than the former audio-video terminal of active channel,
If so, sending a warning message to the former audio-video terminal, channel status table is updated, is registered to audio-video terminal feedback
Work(response bag, and terminate, registration failure response bag otherwise is fed back to the audio-video terminal, and terminate.
Further, the method further includes：
The audio-video terminal sends endpoint registration bag to the central controller；
Judge whether to receive the response bag that the central controller is fed back；
If receiving response bag, judge whether to receive registration failure response bag or the response bag that succeeds in registration, if receiving described
Registration failure response bag, then it is off-line state to set this terminal, and is terminated, if receiving the response bag that succeeds in registration, is set
This terminal is presence, and is terminated, if not receiving the registration failure response bag or the response bag that succeeds in registration, is continued
Judge whether to receive response bag；
If not receiving response bag, judge whether time-out, if so, it is off-line state then to set this terminal, and terminate, otherwise
Continue to determine whether to receive response bag.
Further, the audio, video data bag includes channel information, and the channel information includes physical address, priority
With active channel number；The central controller, which is safeguarded, a channel status table, and the channel status table includes each passage
Channel number, the physical address of current audio-video terminal, priority and life span；
The audio, video data bag that the central controller is sent according to audio-video terminal, is updated channel status information
Safeguard, specifically include：
Receive the audio, video data bag that audio-video terminal is sent；
Extract channel information；
Judge whether the channel information is consistent with the information in the channel status table；
If consistent, the channel status table is updated, the life span for putting passage in the channel status table is maximum
Value, carries out the audio, video data bag unpacking processing, completes audio video transmission, and terminate；
If inconsistent, the audio, video data bag is abandoned, is sent out to the audio-video terminal for sending the audio, video data bag
Warning information is sent, and is terminated.
Further, the central controller, which is safeguarded, a channel status table, and the channel status table includes each logical
The channel number in road, the physical address of current audio-video terminal, priority and life span；
The central controller timing checks active channel state, once time-out puts active channel as the free time,
Register and use for audio-video terminal, specifically include：
Judge whether passage is online；
If online, judge whether the life span of passage is more than 0, if so, then the life span of control passage subtracts 1, more
New tunnel state table, and terminate, otherwise send a warning message to the audio-video terminal of active channel, channel status is set for sky
In the spare time, update channel status table, and terminates；
If not online, terminate.
The beneficial effect that technical solution provided in an embodiment of the present invention is brought is：
The endpoint registration bag or audio, video data bag of the transmission of audio-video terminal are received by central controller, or it is periodically right
Active channel state is checked, realizes and the state of passage is managed, occupancy shape of the adjustment audio-video terminal to passage
State, ensures that audio-video terminal shares transmission channel；By automatic management of the central controller to passage, state renewal and from
Line detects, and realizes the registration, state renewal and offline free maintenance management of audio-video terminal, effectively lifts user experience.
Brief description of the drawings
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for
For those of ordinary skill in the art, without creative efforts, other can also be obtained according to these attached drawings
Attached drawing.
Fig. 1 is the structure diagram of audio-video terminal conference system provided in an embodiment of the present invention；
Fig. 2 is the structure diagram of audio-video terminal multichannel on-line control system provided in an embodiment of the present invention；
Fig. 3 is that the central controller in audio-video terminal multichannel On-Line Control Method provided in an embodiment of the present invention carries out
The flow diagram of endpoint registration；
Fig. 4 is that the audio-video terminal in audio-video terminal multichannel On-Line Control Method provided in an embodiment of the present invention carries out
The flow diagram of endpoint registration；
Fig. 5 be terminal presence in audio-video terminal multichannel On-Line Control Method provided in an embodiment of the present invention more
New flow diagram；
Fig. 6 is the terminal offline inspection in audio-video terminal multichannel On-Line Control Method provided in an embodiment of the present invention
Flow diagram.
Embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention
Formula is described in further detail.
An embodiment of the present invention provides a kind of audio-video terminal multichannel on-line control system, can be applied to audio and video end
Hold in conference system, as shown in Figure 1, the audio-video terminal conference system includes central controller 1, multiple audio-video terminals 2
With control computer 4.Wherein, it is attached between multiple audio-video terminals 2 by hand-in-hand mode, First audio and video are whole
The one end at end 2 is connected with central controller 1, and multiple audio-video terminals carry out data biography by multiple passages and central controller
It is defeated.The central controller 1 includes an external input audio-video signal interface and an audio-video signal output interface.
Each audio-video terminal includes a upstream transmission passage and a downlink transfer passage, and upstream transmission passage is by sound
The audio-video signal packing of video terminal local uploads to central controller, the audio and video letter that central controller output multi-channel collects
Number, downlink transfer channel selecting wherein receives all the way, and audio-video terminal uplink includes a physical address and one when packing
A channel number address.
Each audio-video terminal has the bus interface that two internal logics communicate, an interface of each audio-video terminal
One interface of an audio-video terminal adjacent thereto is connected, adjacent thereto another of another interface of each audio-video terminal
One interface of a audio-video terminal is connected, and so on.The bus interface that two internal logics communicate can be direct-connected height
Fast 422 buses or high speed Ethernet exchange generator terminal mouth etc..
Central controller is beaten the uplink audio-video signal of external input audio-video signal and multiple audio-video terminals
Bag, is on the one hand exported by audio-video signal output interface, on the other hand whole to audio and video by bus downlink transfer of handing in hand
End.Passage presence is sent to control computer and is shown by central controller, and control computer sends control strategy
To central controller, channel allocation and control are automatically performed by central controller and audio-video terminal collaboration.
Audio-video terminal multichannel on-line control system provided in an embodiment of the present invention, including central controller 1 and multiple
Audio-video terminal 2, as shown in Fig. 2, having in the transmission line connected between central controller 1 and multiple audio-video terminals 2 multiple
Passage (not shown), generally comprises 32 upstream transmission passages and 32 downlink transfer passages.
The central controller 1 includes：
First location registration process module 11, the endpoint registration bag for being sent to audio-video terminal are handled, and to described
Audio-video terminal feeds back response result；
Channel status update module 12, for the audio, video data bag sent according to audio-video terminal, believes channel status
Breath is updated maintenance；
Offline judgment module 13, checks active channel state for timing, once time-out puts active channel is
Free time, registers for audio-video terminal and uses.
The audio-video terminal 2 includes：
Second location registration process module 21, for carrying out application for registration to passage, to the response result of the central controller
Handled；
Audio, video data bag sending module 22, the passage for being taken by oneself send audio, video data bag.
It should be noted that the distribution and management of passage are completed by the collaboration of central controller and audio-video terminal, it is real
Existing endpoint registration, the renewal of terminal presence and terminal offline inspection etc..Central controller safeguards a channel status table, such as table
Shown in 1, including the data such as channel number, the physical address of current audio-video terminal, priority, life span TTL, central controller
Channel management and online off-line state management etc. can be carried out to audio-video terminal by channel status table.
Table 1
Further, the endpoint registration bag includes log-on message, the log-on message include physical address, priority and
Register channel number；
The first location registration process module is specifically used for：
Receive the endpoint registration bag that audio-video terminal is sent；
Extract log-on message；
Whether idle detect the corresponding passage of the registration channel number；
If idle, channel status table is updated, feeds back the response bag that succeeds in registration to the audio-video terminal, and terminate；
If not idle, whether the priority for detecting the audio-video terminal is higher than the former audio-video terminal of active channel,
If so, sending a warning message to the former audio-video terminal, channel status table is updated, is registered to audio-video terminal feedback
Work(response bag, and terminate, registration failure response bag otherwise is fed back to the audio-video terminal, and terminate.
Further, the second location registration process module is specifically used for：
Endpoint registration bag is sent to the central controller；
Judge whether to receive the response bag that the central controller is fed back；
If receiving response bag, judge whether to receive registration failure response bag or the response bag that succeeds in registration, if receiving described
Registration failure response bag, then it is off-line state to set this terminal, and is terminated, if receiving the response bag that succeeds in registration, is set
This terminal is presence, and is terminated, if not receiving the registration failure response bag or the response bag that succeeds in registration, is continued
Judge whether to receive response bag；
If not receiving response bag, judge whether time-out, if so, it is off-line state then to set this terminal, and terminate, otherwise
Continue to determine whether to receive response bag.
It should be noted that in endpoint registration, audio-video terminal is in state to be registered, and audio-video terminal is controlled to center
The endpoint registration bag that device processed is sent, central controller after the endpoint registration bag of audio-video terminal transmission is received, to passage into
Row management and distribution.If central controller gives the sound by idle passage or by the channel allocation shared by former audio-video terminal
Video terminal, then update channel status table.
Further, the audio, video data bag includes channel information, and the channel information includes physical address, priority
With active channel number；The central controller, which is safeguarded, a channel status table, and the channel status table includes each passage
Channel number, the physical address of current audio-video terminal, priority and life span；
The channel status update module is specifically used for：
Receive the audio, video data bag that audio-video terminal is sent；
Extract channel information；
Judge whether the channel information is consistent with the information in the channel status table；
If consistent, the channel status table is updated, the life span for putting passage in the channel status table is maximum
Value, carries out the audio, video data bag unpacking processing, completes audio video transmission, and terminate；
If inconsistent, the audio, video data bag is abandoned, is sent out to the audio-video terminal for sending the audio, video data bag
Warning information is sent, and is terminated.
It should be noted that when terminal presence updates, audio-video terminal is online.Central controller exists
After receiving audio, video data bag, the match condition of sense channel, that is, check the active channel number and thing in audio, video data bag
Whether consistent with what is recorded in channel status table manage address, if unanimously, updating channel status table, the life of the transmission channel is set
The life time is initial value, i.e. TLL=ASTB_TTL_MAX, and ASTB_TTL_MAX can be the Arbitrary Digit of 3-10, carries out audio number
According to decoding；If inconsistent, audio, video data bag is abandoned, and alarm letter is sent to the audio-video terminal for sending audio, video data bag
Breath.
Further, the offline judgment module is specifically used for：
Judge whether passage is online；
If online, judge whether the life span of passage is more than 0, if so, then the life span of control passage subtracts 1, more
New tunnel state table, and terminate, otherwise send a warning message to the audio-video terminal of active channel, channel status is set for sky
In the spare time, update channel status table, and terminates；
If not online, terminate.
It should be noted that in terminal offline inspection, central controller detection audio-video terminal is online also
It is off-line state, and when audio-video terminal is in off-line state, it is the free time to set the passage shared by audio-video terminal, at the same time
Update channel status table.
The embodiment of the present invention receives the endpoint registration bag or audio and video number of the transmission of audio-video terminal by central controller
Active channel state is checked according to bag, or timing, realizes and the state of passage is managed, adjusts audio-video terminal pair
The seizure condition of passage, ensures that audio-video terminal shares transmission channel；By automatic management of the central controller to passage,
State updates and offline inspection, realizes the registration, state renewal and offline free maintenance management of audio-video terminal, and effectively lifting is used
Experience at family.
An embodiment of the present invention provides a kind of audio-video terminal multichannel On-Line Control Method, can be applied to above-mentioned sound and regards
In frequency terminal multichannel on-line control system, the described method includes：
The central controller handles the endpoint registration bag that audio-video terminal is sent, and to the audio-video terminal
Feed back response result；
The audio, video data bag that the central controller is sent according to audio-video terminal, is updated channel status information
Safeguard；
The central controller timing checks active channel state, once time-out puts active channel as the free time,
Register and use for audio-video terminal.
Further, the endpoint registration bag includes log-on message, the log-on message include physical address, priority and
Register channel number；
The central controller handles the endpoint registration bag that audio-video terminal is sent, and to the audio-video terminal
Response result is fed back, is specifically included：
Receive the endpoint registration bag that audio-video terminal is sent；
Extract log-on message；
Whether idle detect the corresponding passage of the registration channel number；
If idle, channel status table is updated, feeds back the response bag that succeeds in registration to the audio-video terminal, and terminate；
If not idle, whether the priority for detecting the audio-video terminal is higher than the former audio-video terminal of active channel,
If so, sending a warning message to the former audio-video terminal, channel status table is updated, is registered to audio-video terminal feedback
Work(response bag, and terminate, registration failure response bag otherwise is fed back to the audio-video terminal, and terminate.
As shown in figure 3, the specific process flow that central controller registers audio-video terminal includes：
S401, endpoint registration bag receive.Specifically, receive the registration packet that audio-video terminal is sent.
S402, take log-on message.Specifically, log-on message is obtained from registration packet.
S403, judge whether passage is idle；If so, step S406 is then performed, if it is not, then performing step S404.
S404, judge whether priority is higher than occupied terminal；If so, step S405 is then performed, if it is not, then performing step
S408.Specifically, whether the priority for judging audio-video terminal according to channel status table is higher than the priority of occupied terminal.
S405, to former occupied terminal send alarm information.
S406, renewal channel status table.Specifically, distributing transmission channel to audio-video terminal, and update channel status table.
S407, succeed in registration, and terminates.Specifically, the response bag to succeed in registration to audio-video terminal feedback.
S408, send a warning message to registration terminal.
S409, registration failure, and terminate.Specifically, the response bag to audio-video terminal feedback registration failure.
Wherein, central controller feeds back response bag according to registering result to audio-video terminal.
Further, the method further includes：
The audio-video terminal sends endpoint registration bag to the central controller；
Judge whether to receive the response bag that the central controller is fed back；
If receiving response bag, judge whether to receive registration failure response bag or the response bag that succeeds in registration, if receiving described
Registration failure response bag, then it is off-line state to set this terminal, and is terminated, if receiving the response bag that succeeds in registration, is set
This terminal is presence, and is terminated, if not receiving the registration failure response bag or the response bag that succeeds in registration, is continued
Judge whether to receive response bag；
If not receiving response bag, judge whether time-out, if so, it is off-line state then to set this terminal, and terminate, otherwise
Continue to determine whether to receive response bag.
As shown in figure 4, the specific process flow that audio-video terminal is registered includes：
S501, endpoint registration bag are sent.Specifically, send out registration packet to central controller.
S502, judge whether to receive response bag, if so, step S503 is then performed, if it is not, then performing step S506.
S503, judge whether registration failure bag, if so, step S507 is then performed, if it is not, then performing step S504.Specifically
, judge received response bag whether the response bag of registration failure, i.e. registration failure bag.
S504, judge whether the bag that succeeds in registration, if so, step S505 is then performed, if it is not, then return to step S502.Specifically
, judge the response bag whether received response bag succeeds in registration, that is, succeed in registration bag.
S505, the setting SOT state of termination are online, and terminate.
S506, judge whether time-out, if so, step S507 is then performed, if it is not, then return to step S502.
S507, the setting SOT state of termination are offline, and terminate.
Further, the audio, video data bag includes channel information, and the channel information includes physical address, priority
With active channel number；The central controller, which is safeguarded, a channel status table, and the channel status table includes each passage
Channel number, the physical address of current audio-video terminal, priority and life span；
The audio, video data bag that the central controller is sent according to audio-video terminal, is updated channel status information
Safeguard, specifically include：
Receive the audio, video data bag that audio-video terminal is sent；
Extract channel information；
Judge whether the channel information is consistent with the information in the channel status table；
If consistent, the channel status table is updated, the life span for putting passage in the channel status table is maximum
Value, carries out the audio, video data bag unpacking processing, completes audio video transmission, and terminate；
If inconsistent, the audio, video data bag is abandoned, is sent out to the audio-video terminal for sending the audio, video data bag
Warning information is sent, and is terminated.
As shown in figure 5, the specific process flow that central controller carries out terminal online updating includes：
S601, audio and video bag receive.Specifically, receive the audio and video bag that audio-video terminal is sent.
S602, take channel information.Specifically, the Acquisition channel information from audio and video bag.
S603, judge whether passage matches, if so, step S604 is then performed, if it is not, then performing step S606.Specifically,
Judge channel information and transmit whether the transmission channel of audio and video bag matches.
S604, renewal channel status table.Specifically, allowing the life span TTL=ASTB_TTL_MAX of the transmission channel.
S605, audio, video data are unpacked, and terminated.Specifically, parsing audio and video bag.
S606, data packet discarding.Specifically, abandon audio and video bag.
S607, send a warning message to terminal, and terminates.
Further, the central controller, which is safeguarded, a channel status table, and the channel status table includes each logical
The channel number in road, the physical address of current audio-video terminal, priority and life span；
The central controller timing checks active channel state, once time-out puts active channel as the free time,
Register and use for audio-video terminal, specifically include：
Judge whether passage is online；
If online, judge whether the life span of passage is more than 0, if so, then the life span of control passage subtracts 1, more
New tunnel state table, and terminate, otherwise send a warning message to the audio-video terminal of active channel, channel status is set for sky
In the spare time, update channel status table, and terminates；
If not online, terminate.
As shown in fig. 6, the specific process flow that central controller carries out terminal offline inspection includes：
S701, judge whether passage is online, if so, step S702 is then performed, if it is not, then terminating.
S702, judge passage TTL ＞ 0, if so, step S703 is then performed, if it is not, then performing step S704.
S703, TTL=TTL-1, and perform step S706.
S704, send a warning message to terminal.
S705, set channel status as the free time.
S706, renewal channel status table, and terminate.
The embodiment of the present invention receives the endpoint registration bag or audio and video number of the transmission of audio-video terminal by central controller
Active channel state is checked according to bag, or timing, realizes and the state of passage is managed, adjusts audio-video terminal pair
The seizure condition of passage, ensures that audio-video terminal shares transmission channel；By automatic management of the central controller to passage,
State updates and offline inspection, realizes the registration, state renewal and offline free maintenance management of audio-video terminal, and effectively lifting is used
Experience at family.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent replacement, improvement and so on, should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of audio-video terminal multichannel on-line control system, it is characterised in that whole including central controller, multiple audio and video
End and multiple passages；
The central controller includes：
First location registration process module, the endpoint registration bag for being sent to audio-video terminal are handled, and to the audio and video
Terminal feeds back response result；
Channel status update module, for the audio, video data bag sent according to audio-video terminal, carries out channel status information
Updating maintenance；
Offline judgment module, checks active channel state for timing, once time-out puts active channel as the free time, supplies
Audio-video terminal registration uses.
The audio-video terminal includes：
Second location registration process module, for carrying out application for registration to passage, at the response result of the central controller
Reason；
Audio, video data bag sending module, the passage for being taken by oneself send audio, video data bag.
2. audio-video terminal multichannel on-line control system as claimed in claim 1, it is characterised in that the endpoint registration bag
Including log-on message, the log-on message includes physical address, priority and registration channel number；
The first location registration process module is specifically used for：
Receive the endpoint registration bag that audio-video terminal is sent；
Extract log-on message；
Whether idle detect the corresponding passage of the registration channel number；
If idle, channel status table is updated, feeds back the response bag that succeeds in registration to the audio-video terminal, and terminate；
If not idle, whether the priority for detecting the audio-video terminal is higher than the former audio-video terminal of active channel, if so,
Send a warning message to the former audio-video terminal, update channel status table, succeeding in registration to audio-video terminal feedback should
Bag is answered, and is terminated, otherwise feeds back registration failure response bag to the audio-video terminal, and terminate.
3. audio-video terminal multichannel on-line control system as claimed in claim 2, it is characterised in that second registration office
Reason module is specifically used for：
Endpoint registration bag is sent to the central controller；
Judge whether to receive the response bag that the central controller is fed back；
If receiving response bag, judge whether to receive registration failure response bag or the response bag that succeeds in registration, if receiving the registration
Failure response bag, then it is off-line state to set this terminal, and is terminated, if receiving the response bag that succeeds in registration, sets this end
Hold as presence, and terminate, if not receiving the registration failure response bag or the response bag that succeeds in registration, continue to judge
Whether response bag is received；
If not receiving response bag, judge whether time-out, if so, it is off-line state then to set this terminal, and terminate, otherwise continue
Judge whether to receive response bag.
4. audio-video terminal multichannel on-line control system as claimed in claim 1, it is characterised in that the audio, video data
Include channel information, the channel information includes physical address, priority and active channel number；The central controller is safeguarded
Have a channel status table, the channel status table include the channel number of each passage, current audio-video terminal physical address,
Priority and life span；
The channel status update module is specifically used for：
Receive the audio, video data bag that audio-video terminal is sent；
Extract channel information；
Judge whether the channel information is consistent with the information in the channel status table；
If consistent, the channel status table is updated, the life span for putting passage in the channel status table is maximum, right
The audio, video data bag carries out unpacking processing, completes audio video transmission, and terminate；
If inconsistent, the audio, video data bag is abandoned, sends and accuses to the audio-video terminal for sending the audio, video data bag
Alert information, and terminate.
5. audio-video terminal multichannel on-line control system as claimed in claim 1, it is characterised in that the central controller
Maintenance has a channel status table, and the channel status table includes channel number, the physics of current audio-video terminal of each passage
Address, priority and life span；
The offline judgment module is specifically used for：
Judge whether passage is online；
If online, judge whether the life span of passage is more than 0, if so, then the life span of control passage subtracts 1, renewal is logical
Road state table, and terminate, otherwise send a warning message to the audio-video terminal of active channel, channel status is set for the free time, more
New tunnel state table, and terminate；
If not online, terminate.
6. a kind of audio-video terminal multichannel On-Line Control Method, can be applied to such as claim 1 to 5 any one of them sound
In video terminal multichannel on-line control system, it is characterised in that the described method includes：
The central controller handles the endpoint registration bag that audio-video terminal is sent, and is fed back to the audio-video terminal
Response result；
The audio, video data bag that the central controller is sent according to audio-video terminal, is updated channel status information dimension
Shield；
The central controller timing checks active channel state, once time-out puts active channel as the free time, for sound
Video terminal registration uses.
7. audio-video terminal multichannel On-Line Control Method as claimed in claim 6, it is characterised in that the endpoint registration bag
Including log-on message, the log-on message includes physical address, priority and registration channel number；
The central controller handles the endpoint registration bag that audio-video terminal is sent, and is fed back to the audio-video terminal
Response result, specifically includes：
Receive the endpoint registration bag that audio-video terminal is sent；
Extract log-on message；
Whether idle detect the corresponding passage of the registration channel number；
If idle, channel status table is updated, feeds back the response bag that succeeds in registration to the audio-video terminal, and terminate；
If not idle, whether the priority for detecting the audio-video terminal is higher than the former audio-video terminal of active channel, if so,
Send a warning message to the former audio-video terminal, update channel status table, succeeding in registration to audio-video terminal feedback should
Bag is answered, and is terminated, otherwise feeds back registration failure response bag to the audio-video terminal, and terminate.
8. audio-video terminal multichannel On-Line Control Method as claimed in claim 7, it is characterised in that the method is also wrapped
Include：
The audio-video terminal sends endpoint registration bag to the central controller；
Judge whether to receive the response bag that the central controller is fed back；
If receiving response bag, judge whether to receive registration failure response bag or the response bag that succeeds in registration, if receiving the registration
Failure response bag, then it is off-line state to set this terminal, and is terminated, if receiving the response bag that succeeds in registration, sets this end
Hold as presence, and terminate, if not receiving the registration failure response bag or the response bag that succeeds in registration, continue to judge
Whether response bag is received；
If not receiving response bag, judge whether time-out, if so, it is off-line state then to set this terminal, and terminate, otherwise continue
Judge whether to receive response bag.
9. audio-video terminal multichannel On-Line Control Method as claimed in claim 6, it is characterised in that the audio, video data
Include channel information, the channel information includes physical address, priority and active channel number；The central controller is safeguarded
Have a channel status table, the channel status table include the channel number of each passage, current audio-video terminal physical address,
Priority and life span；
The audio, video data bag that the central controller is sent according to audio-video terminal, is updated channel status information dimension
Shield, specifically includes：
Receive the audio, video data bag that audio-video terminal is sent；
Extract channel information；
Judge whether the channel information is consistent with the information in the channel status table；
If consistent, the channel status table is updated, the life span for putting passage in the channel status table is maximum, right
The audio, video data bag carries out unpacking processing, completes audio video transmission, and terminate；
If inconsistent, the audio, video data bag is abandoned, sends and accuses to the audio-video terminal for sending the audio, video data bag
Alert information, and terminate.
10. audio-video terminal multichannel On-Line Control Method as claimed in claim 6, it is characterised in that the center control
Device, which is safeguarded, a channel status table, and the channel status table includes channel number, the thing of current audio-video terminal of each passage
Manage address, priority and life span；
The central controller timing checks active channel state, once time-out puts active channel as the free time, for sound
Video terminal registration uses, and specifically includes：
Judge whether passage is online；
If online, judge whether the life span of passage is more than 0, if so, then the life span of control passage subtracts 1, renewal is logical
Road state table, and terminate, otherwise send a warning message to the audio-video terminal of active channel, channel status is set for the free time, more
New tunnel state table, and terminate；
If not online, terminate.
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