CN107979591B - Multi-channel online control system and method for audio and video terminal - Google Patents
Multi-channel online control system and method for audio and video terminal Download PDFInfo
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- CN107979591B CN107979591B CN201711131552.6A CN201711131552A CN107979591B CN 107979591 B CN107979591 B CN 107979591B CN 201711131552 A CN201711131552 A CN 201711131552A CN 107979591 B CN107979591 B CN 107979591B
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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 multi-channel online control system for audio and video terminals, which comprises a central controller, a plurality of audio and video terminals and a plurality of channels, wherein the central controller is used for controlling the audio and video terminals to be connected with the channels; the central controller includes: the first registration processing module is used for processing the channel registration information of the audio and video terminal; the channel state updating module is used for updating and maintaining the channel state information when an audio/video data packet is received; the off-line judging module is used for regularly checking the state of the occupied channel, and once the occupied channel is idle after being set overtime, the occupied channel is used for registering the audio/video terminal. In addition, the invention discloses a multi-channel online control method for the audio and video terminal. The invention can ensure the sharing of the audio and video terminal to the transmission channel and effectively improve the user experience.
Description
Technical Field
The invention relates to the technical field of communication, in particular to a multi-channel online control system and method for an audio and video terminal.
Background
In recent years, an audio and video terminal conference system is widely used, a plurality of audio and video terminals are distributed in different areas to share and occupy limited transmission channels, and data of each channel needs to be transmitted without mutual interference. The existing conference system needs to manually configure the channel in advance, and the audio and video terminal transmits information according to the allocated channel, so that automatic online state updating cannot be realized. When a new audio/video terminal is added, the transmission channel can be seized with a plurality of original audio/video terminals or a new transmission channel can be seized; when the original audio and video terminal quits the conference system, the occupied transmission channel cannot be released in time, and the channel configuration needs to be manually carried out again, so that the transmission channel resource is wasted.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a multi-channel online control system and method for an audio/video terminal, which can ensure the sharing of the audio/video terminal on a transmission channel and effectively improve the user experience.
The technical scheme provided by the invention for the technical problem is as follows:
on one hand, the invention provides an audio and video terminal multichannel online control system, which comprises a central controller, a plurality of audio and video terminals and a plurality of channels;
the central controller includes:
the first registration processing module is used for processing a terminal registration packet sent by the audio and video terminal and feeding back a response result to the audio and video terminal;
the channel state updating module is used for updating and maintaining the channel state information according to the audio and video data packet sent by the audio and video terminal;
and the offline judgment module is used for regularly checking the state of the occupied channel, and once the occupied channel is idle after being set overtime, the occupied channel is used for registering the audio/video terminal.
The audio and video terminal comprises:
the second registration processing module is used for carrying out registration application on the channel and processing the response result of the central controller;
and the audio and video data packet sending module is used for sending the audio and video data packet through a channel occupied by the audio and video data packet sending module.
Further, the terminal registration packet includes registration information, and the registration information includes a physical address, a priority, and a registration channel number;
the first registration processing module is specifically configured to:
receiving a terminal registration packet sent by an audio/video terminal;
extracting registration information;
detecting whether a channel corresponding to the registration channel number is idle;
if the audio and video terminal is idle, updating the channel state table, feeding back a registration success response packet to the audio and video terminal, and ending;
if not, detecting whether the priority of the audio and video terminal is higher than that of an original audio and video terminal occupying a channel, if so, sending alarm information to the original audio and video terminal, updating a channel state table, feeding back a registration success response packet to the audio and video terminal, and ending, otherwise, feeding back a registration failure response packet to the audio and video terminal, and ending.
Further, the second registration processing module is specifically configured to:
sending a terminal registration packet to the central controller;
judging whether a response packet fed back by the central controller is received;
if receiving the response packet, judging whether receiving a registration failure response packet or a registration success response packet, if receiving the registration failure response packet, setting the terminal to be in an off-line state, and ending, if receiving the registration success response packet, setting the terminal to be in an on-line state, and ending, if not receiving the registration failure response packet or the registration success response packet, continuously judging whether receiving the response packet;
if not, judging whether overtime exists, if yes, setting the terminal to be in an off-line state, and ending, otherwise, continuously judging whether the response packet is received.
Further, the audio/video data packet comprises channel information, wherein the channel information comprises a physical address, a priority and an occupied channel number; the central controller maintains a channel state table, wherein the channel state table comprises a channel number of each channel, a physical address, a priority and a survival time of a current audio/video terminal;
the channel state update module is specifically configured to:
receiving an audio and video data packet sent by an audio and video terminal;
extracting channel information;
judging whether the channel information is consistent with the information in the channel state table;
if the channel state table is consistent with the channel state table, updating the channel state table, setting the survival time of the channel in the channel state table as a maximum value, unpacking the audio and video data packet, completing audio and video transmission, and ending;
if not, discarding the audio and video data packet, sending alarm information to the audio and video terminal sending the audio and video data packet, and ending.
Furthermore, the central controller maintains a channel state table, wherein the channel state table comprises a channel number of each channel, a physical address of a current audio/video terminal, a priority and a survival time;
the offline judgment module is specifically configured to:
judging whether the channel is on-line;
if the channel is on line, judging whether the survival time of the channel is greater than 0, if so, controlling the survival time of the channel to be reduced by 1, updating the channel state table, and ending, otherwise, sending alarm information to the audio and video terminal occupying the channel, setting the channel state to be idle, updating the channel state table, and ending;
if not, the process is finished.
On the other hand, the invention provides an audio and video terminal multichannel online control method, which can be applied to the audio and video terminal multichannel online control system and is characterized in that the method comprises the following steps:
the central controller processes a terminal registration packet sent by the audio and video terminal and feeds back a response result to the audio and video terminal;
the central controller updates and maintains the channel state information according to the audio and video data packet sent by the audio and video terminal;
and the central controller checks the state of the occupied channel at regular time, and once the occupied channel is idle after being set for time, the central controller is used for registering the audio/video terminal.
Further, the terminal registration packet includes registration information, and the registration information includes a physical address, a priority, and a registration channel number;
the central controller processes a terminal registration packet sent by the audio and video terminal and feeds back a response result to the audio and video terminal, and the method specifically comprises the following steps:
receiving a terminal registration packet sent by an audio/video terminal;
extracting registration information;
detecting whether a channel corresponding to the registration channel number is idle;
if the audio and video terminal is idle, updating the channel state table, feeding back a registration success response packet to the audio and video terminal, and ending;
if not, detecting whether the priority of the audio and video terminal is higher than that of an original audio and video terminal occupying a channel, if so, sending alarm information to the original audio and video terminal, updating a channel state table, feeding back a registration success response packet to the audio and video terminal, and ending, otherwise, feeding back a registration failure response packet to the audio and video terminal, and ending.
Further, the method further comprises:
the audio and video terminal sends a terminal registration packet to the central controller;
judging whether a response packet fed back by the central controller is received;
if receiving the response packet, judging whether receiving a registration failure response packet or a registration success response packet, if receiving the registration failure response packet, setting the terminal to be in an off-line state, and ending, if receiving the registration success response packet, setting the terminal to be in an on-line state, and ending, if not receiving the registration failure response packet or the registration success response packet, continuously judging whether receiving the response packet;
if not, judging whether overtime exists, if yes, setting the terminal to be in an off-line state, and ending, otherwise, continuously judging whether the response packet is received.
Further, the audio/video data packet comprises channel information, wherein the channel information comprises a physical address, a priority and an occupied channel number; the central controller maintains a channel state table, wherein the channel state table comprises a channel number of each channel, a physical address, a priority and a survival time of a current audio/video terminal;
the central controller updates and maintains the channel state information according to the audio and video data packet sent by the audio and video terminal, and specifically comprises the following steps:
receiving an audio and video data packet sent by an audio and video terminal;
extracting channel information;
judging whether the channel information is consistent with the information in the channel state table;
if the channel state table is consistent with the channel state table, updating the channel state table, setting the survival time of the channel in the channel state table as a maximum value, unpacking the audio and video data packet, completing audio and video transmission, and ending;
if not, discarding the audio and video data packet, sending alarm information to the audio and video terminal sending the audio and video data packet, and ending.
Furthermore, the central controller maintains a channel state table, wherein the channel state table comprises a channel number of each channel, a physical address of a current audio/video terminal, a priority and a survival time;
the central controller checks the state of the occupied channel at regular time, and once the occupied channel is idle when being set overtime, the central controller is used for registering the audio/video terminal, and the method specifically comprises the following steps:
judging whether the channel is on-line;
if the channel is on line, judging whether the survival time of the channel is greater than 0, if so, controlling the survival time of the channel to be reduced by 1, updating the channel state table, and ending, otherwise, sending alarm information to the audio and video terminal occupying the channel, setting the channel state to be idle, updating the channel state table, and ending;
if not, the process is finished.
The technical scheme provided by the embodiment of the invention has the following beneficial effects:
receiving a terminal registration packet or an audio and video data packet sent by an audio and video terminal through a central controller, or regularly checking the state of an occupied channel, managing the state of the channel, adjusting the occupied state of the audio and video terminal on the channel, and ensuring the sharing of the audio and video terminal on a transmission channel; the central controller is used for automatically managing, updating and offline detecting the channel, so that the registration, state updating and offline maintenance-free management of the audio and video terminal are realized, and the user experience is effectively improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an audio/video terminal conference system provided in an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an audio/video terminal multichannel online control system provided by an embodiment of the present invention;
fig. 3 is a schematic flowchart of terminal registration performed by a central controller in the audio/video terminal multichannel online control method according to the embodiment of the present invention;
fig. 4 is a schematic flowchart of a terminal registration process performed by an audio/video terminal in the audio/video terminal multi-channel online control method provided by the embodiment of the present invention;
fig. 5 is a schematic flow chart of updating a terminal online state in the audio/video terminal multichannel online control method provided by the embodiment of the present invention;
fig. 6 is a schematic flow chart of terminal offline detection in the audio/video terminal multichannel online control method provided by the embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
The embodiment of the invention provides an audio and video terminal multichannel online control system which can be applied to an audio and video terminal conference system, and as shown in figure 1, the audio and video terminal conference system comprises a central controller 1, a plurality of audio and video terminals 2 and a control computer 4. The plurality of audio and video terminals 2 are connected in a hand-in-hand mode, one end of the first audio and video terminal 2 is connected with the central controller 1, and the plurality of audio and video terminals are in data transmission with the central controller through a plurality of channels. The central controller 1 comprises an external input audio/video signal interface and an audio/video signal output interface.
Each audio and video terminal comprises an uplink transmission channel and a downlink transmission channel, the uplink transmission channel packages and uploads local audio and video signals of the audio and video terminal to the central controller, the central controller outputs a plurality of paths of summarized audio and video signals, the downlink transmission channel selects one path to receive, and the audio and video terminal comprises a physical address and a channel number address when being packaged in an uplink transmission mode.
Each audio and video terminal is provided with two bus interfaces which are communicated with each other in internal logic, one interface of each audio and video terminal is connected with one interface of an adjacent audio and video terminal, the other interface of each audio and video terminal is connected with one interface of another adjacent audio and video terminal, and the like. The two internal logically communicated bus interfaces can be directly connected high-speed 422 buses or high-speed Ethernet switch ports and the like.
The central controller packs the externally input audio and video signals and the uplink audio and video signals of the plurality of audio and video terminals, and on one hand, the audio and video signals are output through the audio and video signal output interface, and on the other hand, the audio and video signals are transmitted to the audio and video terminals through the hand-in-hand bus in a downlink mode. The central controller sends the channel on-line state to the control computer for display, the control computer sends the control strategy to the central controller, and the central controller cooperates with the audio and video terminal to automatically complete channel distribution and control.
The multi-channel online control system for the audio and video terminal provided by the embodiment of the invention comprises a central controller 1 and a plurality of audio and video terminals 2, as shown in fig. 2, a plurality of channels (not shown in the figure) are arranged in a transmission line connected between the central controller 1 and the plurality of audio and video terminals 2, and generally comprise 32 uplink transmission channels and 32 downlink transmission channels.
The central controller 1 includes:
the first registration processing module 11 is configured to process a terminal registration packet sent by an audio/video terminal, and feed back a response result to the audio/video terminal;
the channel state updating module 12 is used for updating and maintaining the channel state information according to the audio and video data packet sent by the audio and video terminal;
and the offline judgment module 13 is used for regularly checking the state of the occupied channel, and once the occupied channel is idle after being set overtime, the occupied channel is used for registering the audio/video terminal.
The audio/video terminal 2 includes:
a second registration processing module 21, configured to apply for registration of a channel and process a response result of the central controller;
and the audio and video data packet sending module 22 is used for sending the audio and video data packets through the channels occupied by the audio and video data packets.
It should be noted that the allocation and management of the channels are completed through the cooperation of the central controller and the audio-video terminal, so as to realize terminal registration, terminal online status update, terminal offline detection, and the like. The central controller maintains a channel state table, as shown in table 1, including data such as a channel number, a physical address of a current audio/video terminal, a priority, a Time To Live (TTL), and the like, and can perform channel management, online and offline state management, and the like on the audio/video terminal through the channel state table.
TABLE 1
Further, the terminal registration packet includes registration information, and the registration information includes a physical address, a priority, and a registration channel number;
the first registration processing module is specifically configured to:
receiving a terminal registration packet sent by an audio/video terminal;
extracting registration information;
detecting whether a channel corresponding to the registration channel number is idle;
if the audio and video terminal is idle, updating the channel state table, feeding back a registration success response packet to the audio and video terminal, and ending;
if not, detecting whether the priority of the audio and video terminal is higher than that of an original audio and video terminal occupying a channel, if so, sending alarm information to the original audio and video terminal, updating a channel state table, feeding back a registration success response packet to the audio and video terminal, and ending, otherwise, feeding back a registration failure response packet to the audio and video terminal, and ending.
Further, the second registration processing module is specifically configured to:
sending a terminal registration packet to the central controller;
judging whether a response packet fed back by the central controller is received;
if receiving the response packet, judging whether receiving a registration failure response packet or a registration success response packet, if receiving the registration failure response packet, setting the terminal to be in an off-line state, and ending, if receiving the registration success response packet, setting the terminal to be in an on-line state, and ending, if not receiving the registration failure response packet or the registration success response packet, continuously judging whether receiving the response packet;
if not, judging whether overtime exists, if yes, setting the terminal to be in an off-line state, and ending, otherwise, continuously judging whether the response packet is received.
It should be noted that, when the terminal registers, the audio/video terminal is in a state to be registered, the audio/video terminal sends a terminal registration packet to the central controller, and the central controller manages and allocates the channels after receiving the terminal registration packet sent by the audio/video terminal. And if the central controller allocates an idle channel or a channel occupied by the original audio and video terminal to the audio and video terminal, updating the channel state table.
Further, the audio/video data packet comprises channel information, wherein the channel information comprises a physical address, a priority and an occupied channel number; the central controller maintains a channel state table, wherein the channel state table comprises a channel number of each channel, a physical address, a priority and a survival time of a current audio/video terminal;
the channel state update module is specifically configured to:
receiving an audio and video data packet sent by an audio and video terminal;
extracting channel information;
judging whether the channel information is consistent with the information in the channel state table;
if the channel state table is consistent with the channel state table, updating the channel state table, setting the survival time of the channel in the channel state table as a maximum value, unpacking the audio and video data packet, completing audio and video transmission, and ending;
if not, discarding the audio and video data packet, sending alarm information to the audio and video terminal sending the audio and video data packet, and ending.
It should be noted that, when the online state of the terminal is updated, the audio/video terminal is in the online state. After receiving the audio and video data packet, the central controller detects the matching condition of the channel, namely, checks whether the occupied channel number and the physical address in the audio and video data packet are consistent with those recorded in the channel state table, if so, updates the channel state table, sets the life time of the transmission channel as an initial value, namely, TLL is ASTB _ TTL _ MAX, and ASTB _ TTL _ MAX can be any number from 3 to 10, and decodes the audio data; if the audio and video data packets are inconsistent, discarding the audio and video data packets, and sending alarm information to the audio and video terminal sending the audio and video data packets.
Further, the offline judgment module is specifically configured to:
judging whether the channel is on-line;
if the channel is on line, judging whether the survival time of the channel is greater than 0, if so, controlling the survival time of the channel to be reduced by 1, updating the channel state table, and ending, otherwise, sending alarm information to the audio and video terminal occupying the channel, setting the channel state to be idle, updating the channel state table, and ending;
if not, the process is finished.
It should be noted that, when the terminal is in the offline detection state, the central controller detects whether the audio/video terminal is in the online state or the offline state, and when the audio/video terminal is in the offline state, sets the channel occupied by the audio/video terminal to be idle, and updates the channel state table.
In the embodiment of the invention, a central controller receives a terminal registration packet or an audio/video data packet sent by an audio/video terminal, or regularly checks the state of an occupied channel, so that the state of the channel is managed, the occupied state of the audio/video terminal on the channel is adjusted, and the audio/video terminal is ensured to share a transmission channel; the central controller is used for automatically managing, updating and offline detecting the channel, so that the registration, state updating and offline maintenance-free management of the audio and video terminal are realized, and the user experience is effectively improved.
The embodiment of the invention provides an audio and video terminal multichannel online control method, which can be applied to the audio and video terminal multichannel online control system, and comprises the following steps:
the central controller processes a terminal registration packet sent by the audio and video terminal and feeds back a response result to the audio and video terminal;
the central controller updates and maintains the channel state information according to the audio and video data packet sent by the audio and video terminal;
and the central controller checks the state of the occupied channel at regular time, and once the occupied channel is idle after being set for time, the central controller is used for registering the audio/video terminal.
Further, the terminal registration packet includes registration information, and the registration information includes a physical address, a priority, and a registration channel number;
the central controller processes a terminal registration packet sent by the audio and video terminal and feeds back a response result to the audio and video terminal, and the method specifically comprises the following steps:
receiving a terminal registration packet sent by an audio/video terminal;
extracting registration information;
detecting whether a channel corresponding to the registration channel number is idle;
if the audio and video terminal is idle, updating the channel state table, feeding back a registration success response packet to the audio and video terminal, and ending;
if not, detecting whether the priority of the audio and video terminal is higher than that of an original audio and video terminal occupying a channel, if so, sending alarm information to the original audio and video terminal, updating a channel state table, feeding back a registration success response packet to the audio and video terminal, and ending, otherwise, feeding back a registration failure response packet to the audio and video terminal, and ending.
As shown in fig. 3, a specific processing flow of registering the audio/video terminal by the central controller includes:
and S401, receiving a terminal registration packet. Specifically, a registration packet sent by the audio/video terminal is received.
S402, obtaining the registration information. Specifically, registration information is obtained from the registration packet.
S403, judging whether the channel is idle; if yes, go to step S406, otherwise go to step S404.
S404, judging whether the priority is higher than that of the occupied terminal; if yes, go to step S405, otherwise go to step S408. Specifically, whether the priority of the audio/video terminal is higher than the priority of the occupied terminal is judged according to the channel state table.
S405, sending an alarm message to the original occupied terminal.
And S406, updating the channel state table. Specifically, a transmission channel is allocated to the audio and video terminal, and a channel state table is updated.
And S407, the registration is successful, and the process is ended. Specifically, a response packet with successful registration is fed back to the audio/video terminal.
S408, sending alarm information to the registered terminal.
And S409, failing to register and ending. Specifically, a response packet of registration failure is fed back to the audio/video terminal.
And the central controller feeds back a response packet to the audio and video terminal according to the registration result.
Further, the method further comprises:
the audio and video terminal sends a terminal registration packet to the central controller;
judging whether a response packet fed back by the central controller is received;
if receiving the response packet, judging whether receiving a registration failure response packet or a registration success response packet, if receiving the registration failure response packet, setting the terminal to be in an off-line state, and ending, if receiving the registration success response packet, setting the terminal to be in an on-line state, and ending, if not receiving the registration failure response packet or the registration success response packet, continuously judging whether receiving the response packet;
if not, judging whether overtime exists, if yes, setting the terminal to be in an off-line state, and ending, otherwise, continuously judging whether the response packet is received.
As shown in fig. 4, a specific processing flow of registering the audio/video terminal includes:
and S501, sending a terminal registration packet. Specifically, a registration packet is sent to the central controller.
S502, judging whether the response packet is received, if so, executing the step S503, otherwise, executing the step S506.
S503, determining whether to register the failure packet, if yes, executing step S507, and if not, executing step S504. Specifically, it is determined whether the received response packet is a registration failure response packet, that is, a registration failure packet.
And S504, judging whether the successful packet is registered, if so, executing the step S505, otherwise, returning to the step S502. Specifically, it is determined whether the received response packet is a response packet that is successfully registered, that is, a registration success packet.
And S505, setting the terminal state to be online and ending.
And S506, judging whether the time is out or not, if so, executing the step S507, otherwise, returning to the step S502.
And S507, setting the terminal state to be offline, and ending.
Further, the audio/video data packet comprises channel information, wherein the channel information comprises a physical address, a priority and an occupied channel number; the central controller maintains a channel state table, wherein the channel state table comprises a channel number of each channel, a physical address, a priority and a survival time of a current audio/video terminal;
the central controller updates and maintains the channel state information according to the audio and video data packet sent by the audio and video terminal, and specifically comprises the following steps:
receiving an audio and video data packet sent by an audio and video terminal;
extracting channel information;
judging whether the channel information is consistent with the information in the channel state table;
if the channel state table is consistent with the channel state table, updating the channel state table, setting the survival time of the channel in the channel state table as a maximum value, unpacking the audio and video data packet, completing audio and video transmission, and ending;
if not, discarding the audio and video data packet, sending alarm information to the audio and video terminal sending the audio and video data packet, and ending.
As shown in fig. 5, the specific processing flow of the central controller performing the terminal online update includes:
s601, receiving the audio and video packet. Specifically, an audio/video packet sent by an audio/video terminal is received.
And S602, channel information is taken. Specifically, channel information is obtained from the audio/video packet.
S603, judging whether the channels are matched, if so, executing a step S604, and if not, executing a step S606. Specifically, whether the channel information is matched with a transmission channel for transmitting the audio/video packet is judged.
And S604, updating the channel state table. Specifically, the lifetime TTL of the transport channel is set to ASTB _ TTL _ MAX.
And S605, unpacking the audio and video data and finishing. Specifically, the audio/video packet is parsed.
And S606, discarding the data packet. Specifically, the audio/video packet is discarded.
And S607, sending the alarm information to the terminal, and ending.
Furthermore, the central controller maintains a channel state table, wherein the channel state table comprises a channel number of each channel, a physical address of a current audio/video terminal, a priority and a survival time;
the central controller checks the state of the occupied channel at regular time, and once the occupied channel is idle when being set overtime, the central controller is used for registering the audio/video terminal, and the method specifically comprises the following steps:
judging whether the channel is on-line;
if the channel is on line, judging whether the survival time of the channel is greater than 0, if so, controlling the survival time of the channel to be reduced by 1, updating the channel state table, and ending, otherwise, sending alarm information to the audio and video terminal occupying the channel, setting the channel state to be idle, updating the channel state table, and ending;
if not, the process is finished.
As shown in fig. 6, a specific processing flow of the central controller for performing the terminal offline detection includes:
and S701, judging whether the channel is on line or not, if so, executing a step S702, and if not, ending.
S702, judging that the channel TTL is more than 0, if so, executing a step S703, and if not, executing a step S704.
S703, TTL ═ TTL-1, and step S706 is performed.
And S704, sending alarm information to the terminal.
S705, setting the channel state to be idle.
And S706, updating the channel state table and ending.
In the embodiment of the invention, a central controller receives a terminal registration packet or an audio/video data packet sent by an audio/video terminal, or regularly checks the state of an occupied channel, so that the state of the channel is managed, the occupied state of the audio/video terminal on the channel is adjusted, and the audio/video terminal is ensured to share a transmission channel; the central controller is used for automatically managing, updating and offline detecting the channel, so that the registration, state updating and offline maintenance-free management of the audio and video terminal are realized, and the user experience is effectively improved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. A multi-channel online control system for audio and video terminals is characterized by comprising a central controller and a plurality of audio and video terminals, wherein a plurality of channels are arranged in transmission lines connected between the central controller and the plurality of audio and video terminals;
the central controller includes:
the first registration processing module is used for processing a terminal registration packet sent by an audio and video terminal and feeding back a response result to the audio and video terminal, wherein the terminal registration packet comprises registration information, and the registration information comprises a physical address, a priority and a registration channel number; the first registration processing module is specifically configured to: detecting whether the priority of the audio and video terminal is higher than that of an original audio and video terminal occupying a channel, if so, sending alarm information to the original audio and video terminal, updating a channel state table, and feeding back a registration success response packet to the audio and video terminal, otherwise, feeding back a registration failure response packet to the audio and video terminal;
the channel state updating module is used for maintaining a channel state table, and the channel state table comprises a channel number of each channel, a physical address, a priority and a survival time of the current audio and video terminal; the channel state update module is specifically configured to: receiving an audio and video data packet sent by an audio and video terminal; extracting channel information, wherein the channel information comprises a physical address, a priority and an occupied channel number; judging whether the channel information is consistent with the information in the channel state table or not, if so, updating and maintaining the channel state information according to an audio and video data packet sent by an audio and video terminal, and if not, discarding the audio and video data packet and sending alarm information to the audio and video terminal sending the audio and video data packet;
the off-line judgment module is used for regularly checking the state of the occupied channel, sending alarm information to the audio and video terminal occupying the channel once the channel is overtime, setting the occupied channel to be idle, and updating a channel state table for the audio and video terminal to register and use;
the audio and video terminal comprises:
the second registration processing module is used for carrying out registration application on the channel and processing the response result of the central controller;
and the audio and video data packet sending module is used for sending the audio and video data packet through a channel occupied by the audio and video data packet sending module.
2. The multi-channel online control system for the audio/video terminal according to claim 1, wherein the first registration processing module is specifically configured to:
receiving a terminal registration packet sent by an audio/video terminal;
extracting registration information;
detecting whether a channel corresponding to the registration channel number is idle;
if the audio and video terminal is idle, updating the channel state table, feeding back a registration success response packet to the audio and video terminal, and ending;
if not, detecting whether the priority of the audio and video terminal is higher than that of an original audio and video terminal occupying a channel, if so, sending alarm information to the original audio and video terminal, updating a channel state table, feeding back a registration success response packet to the audio and video terminal, and ending, otherwise, feeding back a registration failure response packet to the audio and video terminal, and ending.
3. The multi-channel online control system for the audio/video terminal according to claim 2, wherein the second registration processing module is specifically configured to:
sending a terminal registration packet to the central controller;
judging whether a response packet fed back by the central controller is received;
if receiving the response packet, judging whether receiving a registration failure response packet or a registration success response packet, if receiving the registration failure response packet, setting the terminal to be in an off-line state, and ending, if receiving the registration success response packet, setting the terminal to be in an on-line state, and ending, if not receiving the registration failure response packet or the registration success response packet, continuously judging whether receiving the response packet;
if not, judging whether overtime exists, if yes, setting the terminal to be in an off-line state, and ending, otherwise, continuously judging whether the response packet is received.
4. The multi-channel online control system of the audio/video terminal according to claim 1, wherein the channel status update module is specifically configured to:
receiving an audio and video data packet sent by an audio and video terminal;
extracting channel information;
judging whether the channel information is consistent with the information in the channel state table;
if the channel state table is consistent with the channel state table, updating the channel state table, setting the survival time of the channel in the channel state table as a maximum value, unpacking the audio and video data packet, completing audio and video transmission, and ending;
if not, discarding the audio and video data packet, sending alarm information to the audio and video terminal sending the audio and video data packet, and ending.
5. The multi-channel online control system for the audio and video terminal according to claim 1, wherein the offline judgment module is specifically configured to:
judging whether the channel is on-line;
if the channel is on line, judging whether the survival time of the channel is greater than 0, if so, controlling the survival time of the channel to be reduced by 1, updating the channel state table, and ending, otherwise, sending alarm information to the audio and video terminal occupying the channel, setting the channel state to be idle, updating the channel state table, and ending;
if not, the process is finished.
6. A multi-channel on-line control method of an audio and video terminal is applied to an audio and video terminal multi-channel on-line control system comprising a central controller and a plurality of audio and video terminals, and a plurality of channels are arranged in a transmission line connected between the central controller and the plurality of audio and video terminals, and is characterized in that the method comprises the following steps:
the central controller processes a terminal registration packet sent by the audio and video terminal and feeds back a response result to the audio and video terminal, wherein the terminal registration packet comprises registration information, and the registration information comprises a physical address, a priority and a registration channel number; the processing of the terminal registration packet sent by the audio and video terminal and the feedback of the response result to the audio and video terminal specifically comprise: detecting whether the priority of the audio and video terminal is higher than that of an original audio and video terminal occupying a channel, if so, sending alarm information to the original audio and video terminal, updating a channel state table, and feeding back a registration success response packet to the audio and video terminal, otherwise, feeding back a registration failure response packet to the audio and video terminal;
the central controller maintains a channel state table, wherein the channel state table comprises a channel number of each channel, a physical address, a priority and a survival time of a current audio/video terminal, and the channel state table specifically comprises the following steps: receiving an audio and video data packet sent by an audio and video terminal; extracting channel information, wherein the channel information comprises a physical address, a priority and an occupied channel number; judging whether the channel information is consistent with the information in the channel state table or not, if so, updating and maintaining the channel state information according to an audio and video data packet sent by an audio and video terminal, and if not, discarding the audio and video data packet and sending alarm information to the audio and video terminal sending the audio and video data packet;
the central controller checks the state of the occupied channel at regular time, and once the central controller sends alarm information to the audio and video terminal occupying the channel when the central controller is overtime, the occupied channel is set to be idle, and the channel state table is updated for the audio and video terminal to register and use.
7. The multi-channel online control method for the audio and video terminal according to claim 6, wherein the central controller processes a terminal registration packet sent by the audio and video terminal and feeds back a response result to the audio and video terminal, and specifically comprises:
receiving a terminal registration packet sent by an audio/video terminal;
extracting registration information;
detecting whether a channel corresponding to the registration channel number is idle;
if the audio and video terminal is idle, updating the channel state table, feeding back a registration success response packet to the audio and video terminal, and ending;
if not, detecting whether the priority of the audio and video terminal is higher than that of an original audio and video terminal occupying a channel, if so, sending alarm information to the original audio and video terminal, updating a channel state table, feeding back a registration success response packet to the audio and video terminal, and ending, otherwise, feeding back a registration failure response packet to the audio and video terminal, and ending.
8. The multi-channel online control method for the audio-video terminal as recited in claim 7, wherein the method further comprises:
the audio and video terminal sends a terminal registration packet to the central controller;
judging whether a response packet fed back by the central controller is received;
if receiving the response packet, judging whether receiving a registration failure response packet or a registration success response packet, if receiving the registration failure response packet, setting the terminal to be in an off-line state, and ending, if receiving the registration success response packet, setting the terminal to be in an on-line state, and ending, if not receiving the registration failure response packet or the registration success response packet, continuously judging whether receiving the response packet;
if not, judging whether overtime exists, if yes, setting the terminal to be in an off-line state, and ending, otherwise, continuously judging whether the response packet is received.
9. The multi-channel online control method for the audio/video terminal according to claim 6, wherein the central controller updates and maintains the channel state information according to an audio/video data packet sent by the audio/video terminal, and specifically comprises:
receiving an audio and video data packet sent by an audio and video terminal;
extracting channel information;
judging whether the channel information is consistent with the information in the channel state table;
if the channel state table is consistent with the channel state table, updating the channel state table, setting the survival time of the channel in the channel state table as a maximum value, unpacking the audio and video data packet, completing audio and video transmission, and ending;
if not, discarding the audio and video data packet, sending alarm information to the audio and video terminal sending the audio and video data packet, and ending.
10. The multi-channel on-line control method of an audio-visual terminal as claimed in claim 6,
the central controller checks the state of the occupied channel at regular time, and once the occupied channel is idle when being set overtime, the central controller is used for registering the audio/video terminal, and the method specifically comprises the following steps:
judging whether the channel is on-line;
if the channel is on line, judging whether the survival time of the channel is greater than 0, if so, controlling the survival time of the channel to be reduced by 1, updating the channel state table, and ending, otherwise, sending alarm information to the audio and video terminal occupying the channel, setting the channel state to be idle, updating the channel state table, and ending;
if not, the process is finished.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6105054A (en) * | 1995-07-31 | 2000-08-15 | Canon Kabushiki Kaisha | Multi-point-to-point conferencing system where terminals exchange control channel messages indicating data channel availability and the reserve data channels accordingly |
| CN101459816A (en) * | 2007-12-14 | 2009-06-17 | 深圳华为通信技术有限公司 | Method, system and device for controlling auxiliary stream token in multi-point bi-stream conference |
| CN105376516A (en) * | 2015-10-19 | 2016-03-02 | 深圳市航安网络科技有限公司 | Mobile video conference system and implementing method thereof |
| CN106303111A (en) * | 2015-05-28 | 2017-01-04 | 华为技术有限公司 | Call routing distribution method, Apparatus and system |
| CN106453440A (en) * | 2016-12-27 | 2017-02-22 | 国网信息通信产业集团有限公司 | Recording and broadcasting system |
-
2017
- 2017-11-15 CN CN201711131552.6A patent/CN107979591B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6105054A (en) * | 1995-07-31 | 2000-08-15 | Canon Kabushiki Kaisha | Multi-point-to-point conferencing system where terminals exchange control channel messages indicating data channel availability and the reserve data channels accordingly |
| CN101459816A (en) * | 2007-12-14 | 2009-06-17 | 深圳华为通信技术有限公司 | Method, system and device for controlling auxiliary stream token in multi-point bi-stream conference |
| CN106303111A (en) * | 2015-05-28 | 2017-01-04 | 华为技术有限公司 | Call routing distribution method, Apparatus and system |
| CN105376516A (en) * | 2015-10-19 | 2016-03-02 | 深圳市航安网络科技有限公司 | Mobile video conference system and implementing method thereof |
| CN106453440A (en) * | 2016-12-27 | 2017-02-22 | 国网信息通信产业集团有限公司 | Recording and broadcasting system |
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