CN114422758A - Equipment outflow method, system, network camera and communication system - Google Patents

Abstract

The invention discloses a device outflow method, a device outflow system, a network camera and a communication system. The time-consuming step of connecting the network camera and the mobile terminal is executed in advance, outflow can be realized only by converting the state of a connecting link between the network camera and the mobile terminal (dormancy → activation), and the time consumption is short, so that the outflow time is shortened, the outflow speed is accelerated, and the user experience effect is good. Moreover, when the mobile terminal issues the flow end request, the connection between the network camera and the mobile terminal is not really disconnected, but the connection is restored to the dormant state, so that the next quick connection is facilitated. In addition, when the connection between the network camera and the mobile terminal is restored from the activated state to the dormant state, the network camera releases the buffer area occupying larger memory, namely, the dormant connection does not occupy excessive memory, so that the network camera can simultaneously reserve more paths of dormant connections, and the performance is improved to some extent.

Description

Device outflow method, system, network camera and communication system

technical field

The invention relates to the field of monitoring, in particular to a device outflow method, system, network camera and communication system.

Background technique

With the improvement of living standards, IPC (IP Camera, network camera) has gradually entered ordinary families, and is used to watch the house, children, pets, etc. Users can open the mobile terminal app (application, mobile phone software) and IPC anytime and anywhere. The device establishes a connection to realize remote monitoring.

At present, P2P (peer-to-peer, peer-to-peer) communication technology is widely used for the connection between the IPC device and the mobile terminal app. The P2P communication technology uses the NAT penetration technology. A penetration control server deployed on the Internet assists the IPC device and the mobile terminal app to establish a connection. The specific connection process is as follows:

1) The mobile terminal app and the IPC device register with the server; 2) The mobile terminal app requests the server to connect to the IPC; 3) The server informs the IPC device that the mobile terminal app requests the connection; 4) The IPC device informs the server that the connection is allowed; 5) The server informs the mobile terminal The terminal app request is allowed, and informs the mobile terminal app of the relevant parameters of the IPC device; 6) The mobile terminal app establishes a connection directly with the IPC device.

After the IPC device is connected to the mobile terminal app, the IPC device needs to allocate a large memory space for it as a buffer to store the streaming media data to be sent, so as to reduce frame loss and picture jitter when the device is streaming out.

However, the existing IPC equipment outflow solution has the following problems:

1) The connection process with the IPC device on the mobile terminal app is generally: load the IPC device list → click the target IPC device to enter the panel (indicating that the mobile terminal app has an outflow request for the target IPC device) → establish a P2P connection with the target IPC device → target IPC device outflow→exit panel (indicating that the mobile terminal app has an outflow end request to the target IPC device)→the target IPC device stops outflow→disconnects the P2P connection with the target IPC device. However, since the P2P connection needs to go through multiple network interactions, which is time-consuming, after the user clicks the target IPC device to enter the panel, it takes a while to see the video data.

2) The same IPC device may establish connections with multiple mobile terminal apps at the same time. The IPC device needs to allocate corresponding memory space as a buffer for each P2P connection. However, the memory space of the IPC device is limited, so it is impossible to keep too much memory at the same time Multiple P2P connections affect device performance.

Therefore, how to provide a solution to the above technical problem is a problem that those skilled in the art need to solve at present.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a device outflow method, system, network camera and communication system, which reduces outflow time, accelerates outflow speed, and has better user experience; , does not really disconnect the connection between the IP camera and the mobile terminal, but restores the connection to the dormant state for quick connection next time; in addition, the IP camera can keep more sleep connections at the same time, which improves the performance.

In order to solve the above technical problems, the present invention provides a device outflow method, which is applied to a network camera, including:

Establish a connection in advance with a mobile terminal that has an early connection requirement, and control the connection link with the mobile terminal to enter a dormant state;

When receiving the outflow request from the target mobile terminal, the target connection link with the target mobile terminal is changed from the dormant state to the active state, and the target connection link is allocated for storing the first to-be-sent connection link. a first memory buffer for streaming media data to send the first streaming media data to the target mobile terminal; wherein the target mobile terminal is any one of the mobile terminals;

When receiving the outflow end request from the target mobile terminal, stop sending the first streaming media data to the target mobile terminal, restore the target connection link from the active state to the dormant state, and release all Describe the first memory buffer.

Optionally, establish a connection in advance with a mobile terminal that has an advance connection requirement, including:

When receiving an advance connection request initiated by the first mobile terminal, determine the first mobile terminal as a mobile terminal with an advance connection requirement, and establish a connection with the first mobile terminal;

Wherein, the advance connection request is a request initiated by the first mobile terminal when the video surveillance app is started.

Optionally, when receiving an early connection request initiated by the first mobile terminal, determining the first mobile terminal as a mobile terminal with an early connection requirement, including:

When receiving an early connection request initiated by the first mobile terminal based on the linked list of device IDs of multiple network cameras, determining the first mobile terminal as a mobile terminal with an early connection requirement;

Wherein, the linked list is dynamically adjusted based on the rule that the device ID of the newly accessed network camera is inserted or moved to the head of the linked list, and the first mobile terminal is located in the network corresponding to the first preset number of device IDs in the linked list. The camera initiates an early connection request.

Optionally, the device outflow method further includes:

Save the connection link entering the dormant state to the preset connection pool;

When receiving the outflow request from the second mobile terminal, determine whether the second connection link with the second mobile terminal is stored in the connection pool;

If so, take out the second connection link from the connection pool, and use the second mobile terminal as the target mobile terminal to execute the target connection link with the target mobile terminal from dormant The steps to change the state to the active state;

If not, establish a connection with the second mobile terminal, and allocate a second memory buffer for storing the second streaming media data to be sent to the second connection link, so that the second streaming media The data is sent to the second mobile terminal, and when an outflow end request from the second mobile terminal is received, the second memory buffer is released, and the second connection link is controlled to enter a sleep state.

Optionally, the connection established with any mobile terminal is a P2P connection;

The device outflow method further includes:

When establishing a P2P connection with a third mobile terminal, synchronously establish a TCP connection with the third mobile terminal by means of a server;

determining whether a P2P connection is successfully established with the third mobile terminal;

If yes, then use the P2P connection to transmit streaming media data to the third mobile terminal;

If not, use the TCP connection to transmit the streaming media data to the third mobile terminal.

Optionally, the device outflow method further includes:

Setting the flag bits representing the current transmission channel of the mobile terminal for different mobile terminals in advance;

When using the P2P connection to transmit streaming media data to the third mobile terminal, the flag position corresponding to the third mobile terminal is set as the first value;

When the streaming media data is transmitted to the third mobile terminal by using the TCP connection, the flag position corresponding to the third mobile terminal is set as the second value.

In order to solve the above technical problems, the present invention also provides a device outflow system, which is applied to a network camera, including:

A pre-connection module, used to establish a connection with a mobile terminal that has an early connection requirement in advance, and control the connection link with the mobile terminal to enter a dormant state;

The outflow module is used to change the target connection link with the target mobile terminal from the dormant state to the active state when receiving the outflow request of the target mobile terminal, and allocate the target connection link for the target connection link. in a first memory buffer for storing the first streaming media data to be sent, so as to send the first streaming media data to the target mobile terminal; wherein, the target mobile terminal is any one of the mobile terminals;

A recovery module, configured to stop sending the first streaming media data to the target mobile terminal when receiving an outflow end request from the target mobile terminal, and restore the target connection link from an active state to a dormant state state, and release the first memory buffer.

Optionally, the connection established with any mobile terminal is a P2P connection;

The equipment outflow system also includes:

a compensation connection module, configured to establish a TCP connection with the third mobile terminal synchronously with the help of a server when establishing a P2P connection with the third mobile terminal;

a judgment module for judging whether to successfully establish a P2P connection with the third mobile terminal; if so, execute a P2P transmission module; if not, execute a TCP transmission module;

A P2P transmission module, configured to transmit streaming media data to the third mobile terminal by using a P2P connection;

A TCP transmission module, configured to transmit streaming media data to the third mobile terminal by using a TCP connection.

In order to solve the above technical problems, the present invention also provides a network camera, including:

memory for storing computer programs;

The processor is configured to implement the steps of any one of the above-mentioned methods for outflow from a device when executing the computer program.

In order to solve the above technical problem, the present invention also provides a communication system, including a mobile terminal and the above-mentioned network camera.

The present invention provides a device outflow method, which is applied to a network camera. The time-consuming step of connecting the IP camera to the mobile terminal is performed in advance, and only the state of the connection link between the IP camera and the mobile terminal needs to be converted (sleep → active) to realize the outflow, which takes a very short time, thereby reducing The outflow time is shortened, the outflow speed is accelerated, and the user experience effect is better. Moreover, when the mobile terminal sends out a stream end request, the connection between the network camera and the mobile terminal is not really disconnected, but the connection is restored to a sleep state for fast connection next time. In addition, when the connection between the IP camera and the mobile terminal is restored from the active state to the dormant state, the IP camera will release the buffer that occupies a large amount of memory, that is, the connection in the dormant state will not occupy too much memory, so the IP camera can keep it at the same time. There are more dormant connections, and the performance is improved.

The present invention also provides a device outflow system, a network camera and a communication system, which have the same beneficial effects as the above outflow method.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present invention more clearly, the following briefly introduces the prior art and the accompanying drawings required in the embodiments. Obviously, the drawings in the following description are only some of the present invention. In the embodiments, for those of ordinary skill in the art, other drawings can also be obtained according to these drawings without any creative effort.

FIG. 1 is a flowchart of a device outflow method according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of an equipment outflow system according to an embodiment of the present invention.

Detailed ways

The core of the present invention is to provide a device outflow method, system, network camera and communication system, which reduces outflow time, accelerates outflow speed, and has better user experience; , does not really disconnect the connection between the IP camera and the mobile terminal, but restores the connection to the dormant state for quick connection next time; in addition, the IP camera can keep more sleep connections at the same time, which improves the performance.

In order to make the purposes, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments These are some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Please refer to FIG. 1 , which is a flowchart of a device outflow method according to an embodiment of the present invention.

The device outflow method is applied to network cameras, including:

Step S1: Establish a connection in advance with a mobile terminal that has an early connection requirement, and control the connection link with the mobile terminal to enter a sleep state.

Specifically, considering that the connection between the network camera and the mobile terminal is time-consuming, the present application establishes the connection between the network camera and the mobile terminal in advance, so that the user does not perceive the connection process. To this end, this application defines the following states for the connection link between the IP camera and the mobile terminal: inactive (the IP camera is disconnected from the mobile terminal), dormant, and active (the connection between the IP camera and the mobile terminal is in progress). The link is active), active, and the states can be switched between each other. It should be noted that, after the network camera and the mobile terminal are connected, the connection link between the two needs to be in a dormant state when not in use, and needs to be in an active state when in use.

Based on this, the network camera establishes a connection in advance with the mobile terminal that needs to be connected in advance, and controls the connection link between itself and the pre-connected mobile terminal to enter a sleep state, waiting for subsequent use. It should be noted that the network camera only needs to reserve the basic memory resources required to maintain the connection for the connection link in the sleep state.

Step S2: when receiving the outflow request from the target mobile terminal, the target connection link with the target mobile terminal is changed from the dormant state to the active state, and the target connection link is allocated for storing the first flow to be sent. A first memory buffer for media data, so as to send the first streaming media data to the target mobile terminal.

It should be noted that the target mobile terminal is any one of the mobile terminals pre-connected to the network camera.

Specifically, when the network camera receives an outflow request from the target mobile terminal (for example, when the video surveillance app is opened on the target mobile terminal to load the network camera list and click a network camera to enter the panel, the target mobile terminal will use the server to send this network When the camera sends an outgoing stream request), it changes the target connection link between itself and the target mobile terminal from the dormant state to the active state, and allocates a first memory buffer (for storing the first stream to be sent) to the target connection link media data), and then send the first streaming media data stored in the first memory buffer to the target mobile terminal, so as to reduce problems such as frame loss and picture jitter when the device streams out.

It can be seen that the time-consuming step of connecting the IP camera and the mobile terminal is performed in advance. Only the state of the connection link between the IP camera and the mobile terminal needs to be converted (sleep → active) to realize the outflow, which takes a very short time. Thus, the outflow time is reduced and the outflow speed is accelerated.

Step S3: upon receiving the outflow termination request from the target mobile terminal, stop sending the first streaming media data to the target mobile terminal, restore the target connection link from the active state to the dormant state, and release the first memory buffer.

Specifically, when the network camera receives an outflow end request from the target mobile terminal (for example, when exiting the panel on the target mobile terminal, the target mobile terminal will send an outflow end request to the network camera with the help of the server), it stops the first streaming media data. Send to the target mobile terminal, and restore the target connection link between itself and the target mobile terminal from the active state to the dormant state, and at the same time release the first memory buffer allocated for the target connection link, which is only for the target connection in dormancy. The link reserves the basic memory resources required to maintain the connection, so that the target connection link in hibernation does not occupy too much memory. If an outflow request from the target mobile terminal is received again, the memory buffer may be re-allocated for the target connection link.

To sum up, the time-consuming step of connecting the IP camera and the mobile terminal is performed in advance, and only the state of the connection link between the IP camera and the mobile terminal needs to be converted (sleep → active) to realize the outflow, which takes a very short time. , thereby reducing the outflow time, speeding up the outflow speed, and the user experience effect is better. Moreover, when the mobile terminal sends out a stream end request, the connection between the network camera and the mobile terminal is not really disconnected, but the connection is restored to a sleep state for fast connection next time. In addition, when the connection between the IP camera and the mobile terminal is restored from the active state to the dormant state, the IP camera will release the buffer that occupies a large amount of memory, that is, the connection in the dormant state will not occupy too much memory, so the IP camera can keep it at the same time. There are more dormant connections, and the performance is improved.

On the basis of the above-mentioned embodiment:

As an optional embodiment, establishing a connection with a mobile terminal that has an early connection requirement in advance includes:

When receiving an early connection request initiated by the first mobile terminal, determine the first mobile terminal as a mobile terminal with an early connection requirement, and establish a connection with the first mobile terminal;

The advance connection request is a request initiated by the first mobile terminal when the video surveillance app is started.

Specifically, taking the first mobile terminal as an example, the principle of establishing a connection between a network camera and a mobile terminal that needs to be connected in advance is described: when the first mobile terminal starts its own video surveillance app, the first mobile terminal uses the server to actively connect to the network camera that it wants to connect to. Initiate an early connection request. When the network camera receives the advance connection request initiated by the first mobile terminal, it determines the first mobile terminal as a mobile terminal with advance connection requirements, and establishes a connection with the first mobile terminal in advance, that is, the network camera is connected to the first mobile terminal in advance. The video surveillance app establishes a connection with the first mobile terminal during the startup process, so as to avoid establishing a connection between the network camera and the first mobile terminal when the first mobile terminal has an outflow request from the network camera in the future, so as to reduce outflow time.

Based on this, the connection process of the IP camera on the video surveillance app of the mobile terminal is: load the device list → pre-connect the device and enter the sleep state → click the target IP camera to enter the panel (indicating that the mobile terminal app has an outflow request to the target IP camera) → The connection link corresponding to the target IP camera changes from the dormant state to the active state → the target IP camera outflows → exits the panel (indicating that the mobile terminal app has an outflow termination request for the target IP camera) → the target IP camera stops outgoing → the target IP camera The corresponding connection link is restored from the active state to the dormant state.

As an optional embodiment, when an early connection request initiated by the first mobile terminal is received, determining the first mobile terminal as a mobile terminal with an early connection requirement includes:

When receiving an early connection request initiated by the first mobile terminal based on the linked list buffered with the device IDs of multiple network cameras, determining the first mobile terminal as a mobile terminal with an early connection requirement;

The linked list is dynamically adjusted based on the rule that the device ID of the newly accessed IP camera is inserted or moved to the head of the linked list, and the first mobile terminal initiates an advance connection request to the IP cameras corresponding to the first preset number of device IDs in the linked list.

Specifically, taking the first mobile terminal as an example, the specific principle of establishing a connection between a network camera and a mobile terminal that has an advance connection requirement is described:

The first mobile terminal uses the linked list to record the device IDs (Identity documents, unique codes) of several network cameras that it can connect to and use, and the linked list can be dynamically adjusted. The setting rules of the linked list are specifically: 1) the linked list records in advance the device IDs of several network cameras that the first mobile terminal can connect and use; 2) if the device IDs of the network cameras accessed by the first mobile terminal are not recorded in the linked list, Then insert the device ID of the network camera newly accessed by the first mobile terminal into the head of the linked list; 3) if the device ID of the network camera accessed by the first mobile terminal latest is recorded in the linked list, then the network accessed by the first mobile terminal latest The device ID of the camera is moved to the head of the linked list; 4) When the linked list is full, the device ID at the tail of the linked list is discarded, so that the linked list records the device IDs of several network cameras most frequently used by the user recently.

Based on this, the first mobile terminal initiates an advance connection request based on the linked list buffered with the device IDs of multiple network cameras. Specifically, the first mobile terminal may, when its own video surveillance app is started, use the server to proactively send an advance request to the linked list. The IP camera corresponding to the set number of device IDs initiates an advance connection request, that is, actively initiates an advance connection request to the most recently used IP camera. For example, the network cameras corresponding to the first 5 device IDs in the linked list by default are commonly used devices. When the first mobile terminal starts its own video surveillance app, it actively initiates an advance connection to the network cameras corresponding to the first 5 device IDs in the linked list. Request, if the user uses the first mobile terminal to connect and access the IP camera corresponding to the 6th device ID in the linked list later, move the 6th device ID in the linked list to the head of the linked list, and wait until the next time the first mobile terminal When the video surveillance app starts, the IP camera corresponding to the 6th device ID originally located in the linked list is used as a common device.

When receiving the early connection request initiated by the first mobile terminal, the network camera determines the first mobile terminal as a mobile terminal with early connection requirement, and establishes a connection with the first mobile terminal in advance to reduce the subsequent outflow time.

As an optional embodiment, the device outflow method further includes:

Save the connection link entering the dormant state to the preset connection pool;

When receiving the outflow request from the second mobile terminal, determine whether the second connection link with the second mobile terminal is stored in the connection pool;

If so, the second connection link is taken out from the connection pool, and the second mobile terminal is used as the target mobile terminal to perform the step of changing the target connection link with the target mobile terminal from the dormant state to the active state;

If not, establish a connection with the second mobile terminal, and allocate a second memory buffer for storing the second streaming media data to be sent to the second connection link, so as to send the second streaming media data to the second mobile terminal The terminal, and when receiving the outflow end request from the second mobile terminal, releases the second memory buffer, and controls the second connection link to enter the sleep state.

Further, considering that the mobile terminal that is not currently connected to the network camera may have outflow requirements for the network camera, the network camera also presets a connection pool for saving the connection link entering the dormant state. The principle of use is ( Taking the second mobile terminal as an example): when the network camera receives the outflow request from the second mobile terminal, it first determines whether the second connection link between itself and the second mobile terminal is stored in the connection pool. If it is stored in the connection pool, it means that the second connection link belongs to the target mobile terminal that has been connected to the IP camera. , and use the second mobile terminal as the target mobile terminal to perform the step of changing the target connection link with the target mobile terminal from the dormant state to the active state (that is, to realize: the network camera converts the first link between itself and the second mobile terminal to the active state). The second connection link is changed from the sleep state to the active state, and the second connection link is allocated a second memory buffer for storing the second streaming media data to be sent, so as to send the second streaming media data to the second mobile terminal; when receiving the outflow end request from the second mobile terminal, stop sending the second streaming media data to the second mobile terminal, restore the second connection link from the active state to the dormant state, and release the second memory at the same time buffer, and then save the second connection link that enters the dormant state to the connection pool). If not stored in the connection pool, establish a connection with the second mobile terminal, and allocate a second memory buffer for storing the second streaming media data to be sent to the second connection link, so as to store the second streaming media data It is sent to the second mobile terminal, and when the outflow end request from the second mobile terminal is received, the second memory buffer is released, and the second connection link is controlled to enter the dormant state, and then the second connection chain that enters the dormant state is The way is stored in the connection pool.

It can be seen that a connection pool is maintained on the network camera side, and the connection that is not used temporarily is put into a dormant state and stored in the connection pool; when it is really needed, it is taken out from the connection pool, and the connection can be activated for data transmission.

As an optional embodiment, the connection established with any mobile terminal is a P2P connection;

Device outflow methods also include:

When establishing a P2P connection with the third mobile terminal, synchronously establish a TCP connection with the third mobile terminal by means of the server;

Determine whether the P2P connection is successfully established with the third mobile terminal;

If yes, then use the P2P connection to transmit the streaming media data to the third mobile terminal;

If not, use the TCP connection to transmit the streaming media data to the third mobile terminal.

Further, the connection established between the IP camera and any mobile terminal is a P2P connection. Considering that the P2P connection must go through multiple network interactions, the connection may fail. Therefore, when the IP camera establishes a P2P connection with the third mobile terminal, A TCP (Transmission Control Protocol) connection is established with the server and the third mobile terminal synchronously. Under the TCP connection, the network camera can forward streaming media data to the third mobile terminal through the server, with high stability. Based on this, after establishing a P2P connection with the third mobile terminal, the IP camera also determines whether it has successfully established a P2P connection with the third mobile terminal; Transmit streaming media data; if the P2P connection is not successfully established with the third mobile terminal, use the TCP connection to transmit streaming media data to the third mobile terminal to improve the connection success rate between the IP camera and the third mobile terminal.

As an optional embodiment, the device outflow method further includes:

Setting the flag bits representing the current transmission channel of the mobile terminal for different mobile terminals in advance;

When using the P2P connection to transmit the streaming media data to the third mobile terminal, the flag position corresponding to the third mobile terminal is set as the first value;

When the streaming media data is transmitted to the third mobile terminal by using the TCP connection, the flag position corresponding to the third mobile terminal is set as the second value.

Further, the network camera also sets the flag bits representing the current transmission channel of the mobile terminal for different mobile terminals in advance, specifically: the flag position corresponding to the mobile terminal is the first value (such as 1), indicating that the current transmission channel of the mobile terminal is: P2P transmission channel; the second value (such as 0) corresponding to the flag position of the mobile terminal indicates that the current transmission channel of the mobile terminal is the TCP transmission channel, then when the network camera uses the P2P connection to transmit streaming media data to the third mobile terminal, the The flag position corresponding to the third mobile terminal is the first value; when streaming media data is transmitted to the third mobile terminal using the TCP connection, the flag position corresponding to the third mobile terminal is set to the second value, so that the user can The flag bit is to obtain whether the current transmission channel between the IP camera and each mobile terminal is a P2P transmission channel or a TCP transmission channel.

Please refer to FIG. 2 , which is a schematic structural diagram of an equipment outflow system according to an embodiment of the present invention.

The device outflow system is applied to network cameras, including:

The pre-connection module 1 is used to establish a connection with a mobile terminal that has an early connection requirement in advance, and control the connection link with the mobile terminal to enter a dormant state;

The outflow module 2 is used to change the target connection link with the target mobile terminal from the dormant state to the active state when receiving the outflow request of the target mobile terminal, and allocate the target connection link for storing the waiting state. the first memory buffer of the sent first streaming media data, so as to send the first streaming media data to the target mobile terminal; wherein, the target mobile terminal is any mobile terminal;

The recovery module 3 is used to stop sending the first streaming media data to the target mobile terminal when receiving the outflow end request from the target mobile terminal, restore the target connection link from the active state to the dormant state, and release the first memory buffer.

As an optional embodiment, the connection established with any mobile terminal is a P2P connection;

The equipment outflow system also includes:

a compensation connection module, configured to establish a TCP connection with the third mobile terminal synchronously with the help of the server when establishing a P2P connection with the third mobile terminal;

a judgment module for judging whether to successfully establish a P2P connection with the third mobile terminal; if so, execute a P2P transmission module; if not, execute a TCP transmission module;

The P2P transmission module is used to transmit streaming media data to the third mobile terminal by using the P2P connection;

The TCP transmission module is used for transmitting streaming media data to the third mobile terminal by using the TCP connection.

For the introduction of the outflow system provided in the present application, please refer to the above-mentioned embodiments of the outflow method, which will not be repeated in this application.

The application also provides a network camera, including:

memory for storing computer programs;

The processor is configured to implement the steps of any one of the above-mentioned methods for outflow from the device when executing the computer program.

For the introduction of the network camera provided in the present application, please refer to the above-mentioned embodiments of the outflow method, which will not be repeated in this application.

The present application also provides a communication system, including a mobile terminal and the above-mentioned network camera.

For the introduction of the communication system provided in this application, please refer to the above-mentioned embodiments of the network camera, which will not be repeated in this application.

It should also be noted that, in this specification, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply these entities or operations. There is no such actual relationship or sequence between operations. Moreover, the terms "comprising", "comprising" or any other variation thereof are intended to encompass a non-exclusive inclusion such that a process, method, article or device that includes a list of elements includes not only those elements, but also includes not explicitly listed or other elements inherent to such a process, method, article or apparatus. Without further limitation, an element qualified by the phrase "comprising a..." does not preclude the presence of additional identical elements in a process, method, article or apparatus that includes the element.

The above description of the disclosed embodiments enables any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. a device outflow method, is characterized in that, is applied to network camera, comprises: Establish a connection in advance with a mobile terminal that has an early connection requirement, and control the connection link with the mobile terminal to enter a dormant state; When receiving the outflow request from the target mobile terminal, the target connection link with the target mobile terminal is changed from the dormant state to the active state, and the target connection link is allocated for storing the first to-be-sent connection link. a first memory buffer for streaming media data to send the first streaming media data to the target mobile terminal; wherein the target mobile terminal is any one of the mobile terminals; When receiving the outflow end request from the target mobile terminal, stop sending the first streaming media data to the target mobile terminal, restore the target connection link from the active state to the dormant state, and release all Describe the first memory buffer. 2. The device outflow method according to claim 1, wherein, establishing a connection with a mobile terminal having an advance connection requirement in advance comprises: When receiving an advance connection request initiated by the first mobile terminal, determine the first mobile terminal as a mobile terminal with an advance connection requirement, and establish a connection with the first mobile terminal; Wherein, the advance connection request is a request initiated by the first mobile terminal when the video surveillance app is started. 3. The device outflow method according to claim 2, wherein when receiving an advance connection request initiated by the first mobile terminal, determining the first mobile terminal as a mobile terminal with an advance connection requirement, comprising: : When receiving an early connection request initiated by the first mobile terminal based on the linked list of device IDs of multiple network cameras, determining the first mobile terminal as a mobile terminal with an early connection requirement; Wherein, the linked list is dynamically adjusted based on the rule that the device ID of the newly accessed network camera is inserted or moved to the head of the linked list, and the first mobile terminal is located in the network corresponding to the first preset number of device IDs in the linked list. The camera initiates an early connection request. 4. The device outflow method according to claim 1, wherein the device outflow method further comprises: Save the connection link entering the dormant state to the preset connection pool; When receiving the outflow request from the second mobile terminal, determine whether the second connection link with the second mobile terminal is stored in the connection pool; If so, take out the second connection link from the connection pool, and use the second mobile terminal as the target mobile terminal to execute the target connection link with the target mobile terminal from dormant The steps to change the state to the active state; If not, establish a connection with the second mobile terminal, and allocate a second memory buffer for storing the second streaming media data to be sent to the second connection link, so that the second streaming media The data is sent to the second mobile terminal, and when an outflow end request from the second mobile terminal is received, the second memory buffer is released, and the second connection link is controlled to enter a sleep state. 5. The device outflow method according to any one of claims 1-4, wherein the connection established with any mobile terminal is a P2P connection; The device outflow method further includes: When establishing a P2P connection with a third mobile terminal, synchronously establish a TCP connection with the third mobile terminal by means of a server; determining whether a P2P connection is successfully established with the third mobile terminal; If yes, then use the P2P connection to transmit streaming media data to the third mobile terminal; If not, use the TCP connection to transmit the streaming media data to the third mobile terminal. 6. The device outflow method according to claim 5, wherein the device outflow method further comprises: Setting the flag bits representing the current transmission channel of the mobile terminal for different mobile terminals in advance; When using the P2P connection to transmit streaming media data to the third mobile terminal, set the flag position corresponding to the third mobile terminal as the first value; When the streaming media data is transmitted to the third mobile terminal by using the TCP connection, the flag position corresponding to the third mobile terminal is set as the second value. 7. A device outflow system, characterized in that, applied to a network camera, comprising: A pre-connection module, used to establish a connection with a mobile terminal that has an early connection requirement in advance, and control the connection link with the mobile terminal to enter a dormant state; The outflow module is used to change the target connection link with the target mobile terminal from the dormant state to the active state when receiving the outflow request of the target mobile terminal, and allocate the target connection link for the target connection link. in the first memory buffer for storing the first streaming media data to be sent, so as to send the first streaming media data to the target mobile terminal; wherein, the target mobile terminal is any one of the mobile terminals; A recovery module, configured to stop sending the first streaming media data to the target mobile terminal when receiving an outflow end request from the target mobile terminal, and restore the target connection link from an active state to a dormant state state, and release the first memory buffer. 8. The device outflow system according to claim 7, wherein the connection established with any mobile terminal is a P2P connection; The equipment outflow system also includes: a compensation connection module, configured to establish a TCP connection with the third mobile terminal synchronously with the help of a server when establishing a P2P connection with the third mobile terminal; a judgment module for judging whether to successfully establish a P2P connection with the third mobile terminal; if so, execute a P2P transmission module; if not, execute a TCP transmission module; A P2P transmission module, configured to transmit streaming media data to the third mobile terminal by using a P2P connection; A TCP transmission module, configured to transmit streaming media data to the third mobile terminal by using a TCP connection. 9. A network camera, comprising: memory for storing computer programs; The processor is configured to implement the steps of the device outflow method according to any one of claims 1-6 when executing the computer program. 10. A communication system, characterized by comprising a mobile terminal and the network camera of claim 9.

Images