CN113055929B - Network hard disk video recorder and video transmission system under household wireless network - Google Patents
Network hard disk video recorder and video transmission system under household wireless network Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/08—Testing, supervising or monitoring using real traffic
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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
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- H—ELECTRICITY
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- 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
- H04L65/80—Responding to QoS
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
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- H04N5/78—Television signal recording using magnetic recording
- H04N5/781—Television signal recording using magnetic recording on disks or drums
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
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- H04W36/08—Reselecting an access point
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
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- H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
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Abstract
The application relates to a network video recorder and a video transmission system, wherein the network video recorder comprises a reverse module, the reverse module monitors all wireless transmission systems in a video transmission channel, each wireless transmission system comprises an access point and a terminal, the terminal corresponds to the access point, and the reverse module works in a probe mode; under the condition that the video transmission state of the network video recorder is blocked, the reverse module selects a target access point from the access points; the anti-system module simulates the network name of the target access point, so that a terminal corresponding to the target access point is connected to the anti-system module to interrupt the wireless transmission process of the target access point, wherein the anti-system module works in an access point mode, the problem that the video transmission efficiency is reduced because the stable transmission of a code stream is ensured by methods such as code stream smoothing in the related art is solved, the transmission stability of the monitoring video can be ensured, and the transmission efficiency is improved.
Description
Technical Field
The application relates to the technical field of wireless communication, in particular to a network video recorder and a video transmission system under a household wireless network.
Background
The module with the wireless transmission (WiFi) function is convenient to install and flexible to use, and has the advantages that the economy, the easiness in expansion and the like are incomparable to wired transmission, and therefore the module is more and more widely used. Especially in the field of video transmission, multiple paths of videos are generally required to be transmitted simultaneously, but the video transmission is very easy to jam due to the large code stream of the videos. Especially, in the case of a home wireless network, besides video transmission between a network camera and a network hard disk video recorder, data transmission is required for electronic devices such as mobile phones, computers, routers and the like, so that the transmission environment is relatively complex, and a universal wireless video transmission system is difficult to ensure stable transmission of multiple paths of video code streams.
In the related art, methods such as code stream smoothing, code stream self-adaptation, video amount frame rate reduction and the like are usually adopted to ensure stable transmission of code streams, but under the condition of congestion of a wireless transmission network, a video pause phenomenon still occurs, so that the efficiency of video transmission is reduced.
At present, an effective solution is not provided aiming at the problem that the video transmission efficiency is still reduced when methods such as code stream smoothing are adopted to ensure stable transmission of code streams in the related technology.
Disclosure of Invention
The embodiment of the application provides a network video recorder and a video transmission system under a home wireless network, and aims to at least solve the problem that stable transmission of code streams is guaranteed by methods such as code stream smoothing and the like in the related technology, and video transmission efficiency is still reduced.
In a first aspect, an embodiment of the present application provides a network hard disk video recorder under a home wireless network, where the network hard disk video recorder includes a copy module:
the anti-braking module monitors all wireless transmission systems in a video transmission channel, wherein each wireless transmission system comprises an access point and a terminal, the terminal corresponds to the access point, and the anti-braking module works in a probe mode;
under the condition that the video transmission state of the network video recorder is blocked, the counter module selects a target access point from the access points;
the anti-braking module simulates the network name of the target access point, so that a terminal corresponding to the target access point is connected to the anti-braking module to interrupt the wireless transmission process of the target access point, wherein the anti-braking module works in an access point mode.
In some embodiments, after the wireless transmission process of the target access point is interrupted, if the video transmission state is stuck, the countering module switches the target access points in sequence and simulates the network names of the switched target access points.
In some of these embodiments, the countering module selecting the target one of the access points comprises:
the control module acquires a terminal with the highest busy degree in a busy degree list, an access point corresponding to the terminal with the highest busy degree is used as the target access point, the terminals are sequenced according to the busy degrees of the terminals of all wireless transmission systems in the video transmission channel, and the busy degree list of the terminals is acquired.
In some embodiments, after the wireless transmission process of the target access point is interrupted, if the video transmission state is stuck, the countering module switches the target access points in sequence according to the busy level list, and simulates the network names of the switched target access points.
In some of these embodiments, determining the video transmission status comprises:
the control method comprises the steps that the counter module obtains video transmission parameters of the network video recorder, and under the condition that the video transmission parameters are not in a preset parameter range, the video transmission state is judged to be blocked, wherein the video transmission parameters comprise at least one of frame skipping rate, frame skipping duration and transmission delay.
In some embodiments, after the wireless transmission process of the target access point is interrupted, in a case where the video transmission status is normal, the countering module monitors all wireless transmission systems in the video transmission channel, wherein the countering module operates in a probe mode.
In some embodiments, the network hard disk video recorder further comprises a video transmission module, the video transmission module is used for receiving monitoring videos, the countering module acquires video transmission parameters through the video transmission module, and the video transmission state is determined according to the video transmission parameters.
In some of these embodiments, the network hard disk recorder includes a memory;
the memory is configured to store the busy level list, where the busy level list includes an access point and a terminal in the wireless transmission system, and a physical address of the terminal.
In some embodiments, the countering module comprises an antenna for monitoring all wireless transmission systems in the video transmission channel.
In a second aspect, an embodiment of the present application provides a video transmission system under a home wireless network, where the video transmission system includes a network hard disk video recorder and a network camera, and the network hard disk video recorder includes a copy module;
the anti-braking module monitors all wireless transmission systems in a video transmission channel, wherein each wireless transmission system comprises an access point and a terminal, the terminal corresponds to the access point, and the anti-braking module works in a probe mode;
under the condition that the video transmission state between the network camera and the network hard disk video recorder is blocked, the reverse module selects a target access point from the access points;
the anti-braking module simulates the network name of the target access point, so that a terminal corresponding to the target access point is connected to the anti-braking module to interrupt the wireless transmission process of the target access point, wherein the anti-braking module works in an access point mode.
Compared with the prior art, the network video recorder under the household wireless network comprises a reverse module, wherein the reverse module monitors all wireless transmission systems in a video transmission channel, the wireless transmission systems comprise access points and terminals, the terminals correspond to the access points, and the reverse module works in a probe mode; under the condition that the video transmission state of the network hard disk video recorder is blocked, the reverse control module selects a target access point from the access points; the anti-system module simulates the network name of the target access point, so that a terminal corresponding to the target access point is connected to the anti-system module to interrupt the wireless transmission process of the target access point, wherein the anti-system module works in an access point mode, the problem that the video transmission efficiency is reduced because the stable transmission of a code stream is ensured by methods such as code stream smoothing in the related art is solved, the transmission stability of the monitoring video can be ensured, and the transmission efficiency is improved.
The details of one or more embodiments of the application are set forth in the accompanying drawings and the description below to provide a more thorough understanding of the application.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
FIG. 1 is a schematic diagram of an application scenario of a network video recorder according to an embodiment of the present application;
fig. 2 is a flow chart of a video transmission method according to an embodiment of the present application;
FIG. 3 is a flow chart of another video transmission method according to an embodiment of the application;
FIG. 4 is a schematic block diagram of a video transmission system according to a preferred embodiment of the present application;
FIG. 5 is a flow chart of a video transmission method according to a preferred embodiment of the present application;
fig. 6 is a block diagram of a hardware structure of a terminal of the video transmission method according to the embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be described and illustrated below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of and not restrictive on the broad application. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments provided in the present application without any inventive step are within the scope of protection of the present application. Moreover, it should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions must be made to achieve the developers' specific goals, such as compliance with system-related and business-related constraints, which may vary from one implementation to another.
Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the specification. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of ordinary skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments without conflict.
Unless otherwise defined, technical or scientific terms referred to herein should have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The use of the terms "a" and "an" and "the" and similar referents in the context of describing the invention (including a single reference) are to be construed in a non-limiting sense as indicating either the singular or the plural. The use of the terms "including," "comprising," "having," and any variations thereof herein, is meant to cover a non-exclusive inclusion; for example, a process, method, system, article, or apparatus that comprises a list of steps or modules (elements) is not limited to only those steps or elements but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus. Reference to "connected," "coupled," and the like in this application is not intended to be limited to physical or mechanical connections, but rather can include electrical connections, whether direct or indirect. Reference herein to "a plurality" means greater than or equal to two. "and/or" describes an association relationship of associated objects, meaning that three relationships may exist, for example, "A and/or B" may mean: a exists alone, A and B exist simultaneously, and B exists alone. Reference herein to the terms "first," "second," "third," and the like, are merely to distinguish similar objects and do not denote a particular ordering for the objects.
The application provides a Network Video Recorder (NVR for short), fig. 1 is an application scene schematic diagram of the Network Video Recorder according to the embodiment of the application, as shown in fig. 1, the Network Video Recorder and a Network Camera (Internet Protocol Camera, IPC for short) transmit a monitoring Video through a wireless Network, the Network Video Recorder includes a Video transmission module and a reverse module, the Video transmission module and the reverse module can realize information transmission through a flat cable or a USB, wherein, the Video transmission module is used for receiving the monitoring Video transmitted by the wireless Network Camera, the reverse module can work in a probe mode and an access point mode, the reverse module can monitor other wireless transmission systems in a transmission channel in the probe mode, and in the access point mode, the reverse module can simulate an access point in the wireless transmission system to interrupt a monitoring Video transmission process of the access point, thereby improving transmission efficiency between the Network Video Recorder and the wireless Network Camera.
Based on the network hard disk video recorder, the embodiment provides a video transmission method. Fig. 2 is a flowchart of a video transmission method according to an embodiment of the present application, as shown in fig. 2, the method includes the following steps:
and step S210, monitoring all wireless transmission systems in a video transmission channel by a reverse module of the network video recorder, wherein the wireless transmission systems comprise access points and terminals, the terminals correspond to the access points, and the reverse module works in a probe mode.
The countering module in this embodiment may be a WiFi Station (STA) terminal module, including countering circuit and antenna, the video transmission channel is a channel used for monitoring video transmission, usually a transmission frequency band, and the network hard disk video recorder can adaptively select the frequency band for video transmission when performing video transmission.
After the video transmission channel is determined, the counter module of the network hard disk video recorder works in a probe mode, records and monitors all other wireless transmission systems in the channel, including other routers, mobile phones, computers and other devices for data transmission in the same channel. The router can be regarded as an Access Point (AP for short), electronic devices such as a mobile phone and a computer can be regarded as terminals, and each Access Point and one terminal form a wireless transmission system. It should be noted that, in the case that the mobile phone starts the hot spot function and allows other electronic devices to access, the mobile phone may also serve as an access point.
In this embodiment, the probe mode of the anti-counterfeit module can be realized based on a probe technology, where the probe technology is based on a WiFi detection technology to identify an access point and a station that can be connected to the access point, for example, a terminal device such as a smart phone, a notebook, and a tablet computer.
And step S220, under the condition that the video transmission state of the network hard disk video recorder is stuck, the reverse module selects a target access point from the access points.
The video transmission state is the condition that the monitoring video is transmitted between the network video recorder and the wireless network camera, and is used for evaluating the smoothness degree of video transmission, including blocking and normal. When the network hard disk video recorder works, the network hard disk video recorder needs to receive videos sent by the wireless network camera, and if a large number of other wireless transmission systems exist in a video transmission channel, the efficiency of video transmission is affected, so that jamming is caused. At this time, the reverse module needs to select one access point from all the access points of the wireless transmission system in the video transmission channel for simulation, and the selected access point is the target access point.
In step S230, the countering module simulates the network name of the target access point, so that the terminal corresponding to the target access point is connected to the countering module to interrupt the wireless transmission process of the target access point, wherein the countering module operates in the access point mode.
After the target access point is determined, the countering module works in an access point mode and can be used as an access point for other terminals to access, and specifically, the access point mode is a soft AP mode. Through the WiFi reverse system technology, after a reverse module simulates a network name (SSID) of a target access point, a terminal connected with the target access point can be connected with the reverse module, but the reverse module can not transmit any data with the terminal, so that the terminal corresponding to the target access point is disconnected from a wireless transmission process, the channel utilization rate of a network video recorder on a video transmission channel is improved, the transmission stability of a monitoring video is ensured, and the transmission efficiency is improved.
Through the steps S210 to S230, the application adds the counter module in the network video recorder, all wireless transmission systems in a video transmission channel can be identified in a probe mode, if a monitoring video is jammed, the counter module works in an access point mode to simulate the network name of a target access point so as to interrupt the wireless transmission process of a part of terminals in the video transmission channel, thereby improving the channel utilization rate of the network video recorder on the video transmission channel, solving the problem that the video transmission efficiency is reduced because the code stream is ensured to be stably transmitted by adopting methods such as code stream smoothing and the like in the related technology, ensuring the transmission stability of the monitoring video and improving the transmission efficiency.
In some embodiments, if the video transmission status is still stuck after the wireless transmission process of the target access point is interrupted, the countering module needs to switch the target access point and simulate a new network name of the target access point, and if the video transmission status is still stuck, the countering module can sequentially switch the target access points and simulate the network name of the switched target access point until the video transmission status is normal. In this embodiment, the countering module can switch the target access point for multiple times, so as to ensure stable transmission of the monitoring video between the network video recorder and the wireless network camera.
In some embodiments, when the reverse Control module operates in the probe mode, the terminals may be further sorted according to the busy levels of the terminals of all the wireless transmission systems in the video transmission channel, so as to obtain a busy level list of the terminals, specifically, the terminals are sorted according to the sequence from high to low of the busy levels, and meanwhile, the busy level list records physical addresses (Media Access Control addresses, abbreviated as MACs) of all the terminals, so as to identify and confirm the terminals. The busy degree in this embodiment may be determined according to a channel utilization rate, where the channel utilization rate is a condition of channel occupancy, for example, a channel utilization rate of 10% indicates that the channel is occupied in 10% of time, and is in a busy state, and an average channel of 90% is unoccupied and is in an idle state, so that the busy degree is low at this time, and therefore, a busy degree list may also be obtained according to a sequence from high to low of channel utilization rates occupied by terminals.
After the busy degree list is obtained, when the reverse module selects a target access point, the terminal with the highest busy degree in the busy degree list can be obtained, and then the access point corresponding to the terminal with the highest busy degree is used as the target access point to simulate the network name of the target access point. Because the channel utilization rate of the terminal with the highest busy degree is also highest, the wireless transmission process of the terminal with the highest busy degree is interrupted, and the channel utilization rate of the video transmission channel can be reduced to the greatest extent, so that the efficiency of monitoring video transmission between the network video recorder and the wireless network camera is improved.
If the video transmission state is still stuck after the wireless transmission process of the target access point corresponding to the terminal with the highest busy degree is interrupted, the reverse module can switch the target access point to the access point corresponding to the terminal with the second busy degree according to the busy degree list and simulate a new network name of the target access point, and if the video transmission state is still stuck, the reverse module can sequentially switch the target access points according to the busy degree list and simulate the network name of the switched target access point. According to the embodiment, the target access point is switched according to the busy degree list, so that the probability of normal transmission of the monitoring video between the network video recorder and the wireless network camera can be improved.
In some embodiments, the video transmission status is determined by: the method comprises the steps that a counter module obtains video transmission parameters of the network video recorder, and under the condition that the video transmission parameters are not in a preset parameter range, the video transmission state is judged to be blocked, wherein the video transmission parameters comprise at least one of a frame skipping rate, a frame skipping time length and transmission delay, the preset parameter range is a parameter range for monitoring normal transmission of video, which is set according to experience, for example, the frame skipping rate is smaller than a preset frequency, the frame skipping time length is smaller than a preset time length, and the delay is smaller than a preset delay time. If the video transmission parameter acquired by the reverse control module is not in the preset parameter range, the video transmission state is blocked, and the reverse control module is required to enter an access point mode to work.
In this embodiment, if the video transmission parameters include a plurality of parameters, the specific determination rule of the video transmission state may be determined according to the requirement, for example, it may be specified that the video transmission state is determined to be stuck only if all the parameters do not satisfy the preset parameter range, or it may be specified that the video transmission state is determined to be stuck as long as one of the parameters does not satisfy the preset parameter range.
The video transmission state is obtained by judging the video transmission parameters, so that the accuracy of judging the video transmission state can be improved.
In some embodiments, fig. 3 is a flowchart of another video transmission method according to the embodiments of the present application, where the method further includes the following steps:
step S310, under the condition that the video transmission state is normal, the reverse module monitors all wireless transmission systems in the video transmission channel, wherein the reverse module works in a probe mode.
In this embodiment, after determining that the video transmission state becomes normal according to the video transmission parameter, the reverse control module resumes working in the probe mode, and continues to monitor all wireless transmission systems in the video transmission channel, thereby ensuring efficient transmission of the monitoring video between the network video recorder and the wireless network camera.
In some embodiments, the network hard disk recorder in the application further includes a video transmission module, and the video transmission parameters can be obtained through the video transmission module. Specifically, the video transmission module is used for receiving the monitoring video, the reverse module acquires video transmission parameters through the video transmission module, and determines a video transmission state according to the video transmission parameters so as to improve the transmission efficiency of the monitoring video. The video transmission module in this embodiment may include a hard disk, a Digital Signal Processing (DSP), a Double Data Rate (DDR), and a power supply, where the hard disk is used to store received monitoring video, the DSP is a Processing chip, and controls operation of the entire network hard disk video recorder including the reverse control module, the DDR is an internal memory, and the power supply supplies power to the entire network hard disk video recorder.
In some embodiments, the network hard disk video recorder includes a memory, and the memory is used for storing a busy level list, where the busy level list includes an access point and a terminal in the wireless transmission system, and a physical address of the terminal, and the memory in this embodiment, for example, FLASH, may also be implemented by a hard disk in the video transmission module, so as to obtain and record the busy level of the wireless transmission system in real time.
The anti-system module in this application still includes the antenna, and this antenna is through gathering wireless communication signal in the video transmission channel, realizes all wireless transmission system's in the monitoring video transmission channel function.
The application also provides a video transmission system, which comprises a network video recorder and a network camera, wherein the network video recorder comprises a counter module; the anti-system module monitors all wireless transmission systems in a video transmission channel, wherein each wireless transmission system comprises an access point and a terminal, the terminal corresponds to the access point, and the anti-system module works in a probe mode; under the condition that the video transmission state between the network camera and the network hard disk video recorder is stuck, the reverse module selects a target access point from the access points; the anti-system module simulates the network name of the target access point, so that the terminal corresponding to the target access point is connected to the anti-system module to interrupt the wireless transmission process of the target access point, wherein the anti-system module works in an access point mode.
The application adds the reverse module in the network video recorder, can identify all wireless transmission systems in the video transmission channel in the probe mode, if the monitoring video is jammed, the reverse module works in the access point mode, the network name of the target access point is simulated, the wireless transmission process of a part of terminals in the video transmission channel is interrupted, so that the channel utilization rate of the network video recorder on the video transmission channel is improved, the problem that stable transmission of a code stream is guaranteed by methods such as code stream smoothing in the related technology is solved, the problem that the video transmission efficiency is reduced can still occur, the transmission stability of the monitoring video can be guaranteed, and the transmission efficiency is improved.
The embodiments of the present application are described and illustrated below by means of preferred embodiments.
Fig. 4 is a schematic structural diagram of a video transmission system according to a preferred embodiment of the present application, and as shown in fig. 4, the video transmission system includes a network camera and a network hard disk recorder, and the network camera and the network hard disk recorder perform video transmission via a wireless network.
The network camera comprises a WiFi circuit module, an image sensor (sensor), a DSP (digital signal processor), a DDR (double data rate) and a power supply, wherein the WiFi circuit module is connected with an antenna and used for realizing wireless communication of the network camera, the image sensor is used for imaging and used for sending acquired monitoring videos to the network hard disk video recorder, the DSP is used for sending control instructions to the WiFi circuit module and other modules such as the image sensor, normal operation of the network camera is guaranteed, the DDR is a memory of the network camera, and the power supply supplies power for other modules and equipment. The WiFi circuit module, the image sensor (sensor), the DSP and the DDR are connected through a flat cable or a USB to realize the transmission of signals and control instructions.
The network video recorder comprises a WiFi circuit module, a copy module and a video transmission module, wherein the WiFi circuit module is connected with an antenna, the wireless communication of the network video camera is realized, the monitoring video sent by the network video camera is specifically received, the copy module comprises a copy circuit and an antenna, the probe mode and the access point mode of the copy module are realized, the video transmission module comprises a hard disk, a DSP (digital signal processor), a DDR (digital data processor) and a power supply, the hard disk is used for storing the received monitoring video, the DSP is used for controlling the whole network video recorder and ensuring the stable work of the whole network video recorder, particularly controlling the working mode of the copy module, the DDR is the memory of the network video recorder, the WiFi circuit module, the copy module and the video transmission module and between different parts in the video transmission module, and the transmission of signals and control instructions is realized through a flat cable or a USB (universal serial bus). Further, in this embodiment, the network hard disk video recorder may further include a FLASH, and the busy level list generated by the counter module in the working process may be stored in the FLASH of the network hard disk video recorder, or may be stored in the hard disk of the video transmission module.
In the process of transmitting a monitoring video between a network camera and a network hard disk recorder in this embodiment, a video transmission method is implemented, fig. 5 is a flowchart of the video transmission method according to the preferred embodiment of the present application, and as shown in fig. 5, the method includes the following steps:
step S510, after the video transmission system is powered on, the network video recorder and the wireless network camera which are used for monitoring video transmission through the wireless network acquire a video transmission channel;
step S520, after normal business is developed, a reverse module works in a probe mode, monitors and records external APs, stations connected with the APs and MAC of the stations, sorts the stations with busy transmission in a video transmission channel and the APs from high to low to form a busy degree list, and stores all information in Flash of the network hard disk video recorder, wherein the APs are access points and the stations are equivalent to terminals;
step S530, when video transmission is in pause, the network hard disk video recorder controls the reverse module to work in soft AP mode, an AP corresponding to a station with the highest busy degree in the busy degree list is used as a target access point, the network name of the target access point is preferentially simulated, and data transmission of the station is interrupted through a WiFi reverse technology;
step S540, if the video transmission state is normal, the network hard disk video recorder equipment controls the reverse module to switch to a probe mode to continue monitoring and recording;
and step S550, if the video transmission state is stuck, the network video recorder equipment controls the reverse module to switch the target access points in sequence according to the busy degree list, and the data transmission of the station is interrupted through the WiFi reverse technology. And the normal transmission of the monitoring video between the network hard disk video recorder and the wireless network camera is preferentially ensured after the above steps are repeated.
Through the steps S510 to S540, the application adds the counter module in the network hard disk recorder, all wireless transmission systems in the video transmission channel can be identified in the probe mode, if the monitoring video is jammed, the counter module works in the access point mode to simulate the network name of the target access point, so as to interrupt the wireless transmission process of a part of terminals in the video transmission channel, thereby improving the channel utilization rate of the network hard disk recorder on the video transmission channel, solving the problem that the video transmission efficiency is reduced because the code stream is ensured to be stably transmitted by adopting methods such as code stream smoothing and the like in the related art, ensuring the transmission stability of the monitoring video, and improving the transmission efficiency.
It should be noted that, according to the method and the device, only one reverse module and necessary software upgrading are needed to be added at the hardware end of the network video recorder, so that the transformation cost is low, when the video transmission of the network video recorder is blocked, the reverse module can determine the influence degree of each terminal on the monitoring video transmission according to the busy degree list, and then one part of WiFi terminals are reversed one by one, and after the monitoring video transmission is stable, the reversed terminal can be relieved from limitation.
It will be further appreciated that the steps illustrated in the flowcharts described above or in the flowcharts of the figures may be performed in a computer system such as a set of computer-executable instructions and that, while logical orders are illustrated in the flowcharts, in some cases, the steps illustrated or described may be performed in an order different than presented herein.
The method embodiments provided in the present application may be executed in a terminal, a computer or a similar computing device. Taking the video transmission method running on the terminal as an example, fig. 6 is a block diagram of a hardware structure of the terminal of the video transmission method according to the embodiment of the present application. As shown in fig. 6, the terminal 60 may include one or more (only one shown in fig. 6) processors 602 (the processor 602 may include, but is not limited to, a processing device such as a microprocessor MCU or a programmable logic device FPGA) and a memory 604 for storing data, and optionally may also include a transmission device 606 for communication functions and an input-output device 608. It will be understood by those skilled in the art that the structure shown in fig. 6 is only an illustration and is not intended to limit the structure of the terminal. For example, terminal 60 may also include more or fewer components than shown in FIG. 6, or have a different configuration than shown in FIG. 6.
The memory 604 may be used to store a control program, for example, a software program and a module of an application software, such as a control program corresponding to the video transmission method in the embodiment of the present application, and the processor 602 executes various functional applications and data processing by running the control program stored in the memory 604, so as to implement the method described above. The memory 604 may include high-speed random access memory, and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, the memory 604 may further include memory located remotely from the processor 602, which may be connected to the terminal 60 via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The transmitting device 606 is used to receive or transmit data via a network. Specific examples of the network described above may include a wireless network provided by a communication provider of the terminal 60. In one example, the transmission device 606 includes a Network adapter (NIC) that can be connected to other Network devices through a base station to communicate with the internet. In one example, the transmitting device 606 can be a Radio Frequency (RF) module, which is used to communicate with the internet via wireless.
The present embodiment further provides an electronic device, which includes a memory and a processor, where the memory stores a computer program, and the processor is configured to execute the computer program to perform the steps in any of the video transmission method embodiments described above.
Optionally, the electronic apparatus may further include a transmission device and an input/output device, wherein the transmission device is connected to the processor, and the input/output device is connected to the processor.
Optionally, in this embodiment, the processor may be configured to execute the following steps by a computer program:
s1, monitoring all wireless transmission systems in a video transmission channel through a reverse module of the digital video recorder, wherein each wireless transmission system comprises an access point and a terminal, the terminal corresponds to the access point, and the reverse module works in a probe mode.
And S2, under the condition that the video transmission state of the hard disk video recorder is in a pause state, controlling the reverse module to select a target access point from the access points.
And S3, controlling the reverse module to simulate the network name of the target access point, so that the terminal corresponding to the target access point is connected to the reverse module to interrupt the wireless transmission process of the target access point, wherein the reverse module works in an access point mode.
It should be noted that, for specific examples in this embodiment, reference may be made to examples described in the foregoing embodiments and optional implementations, and details of this embodiment are not described herein again.
In addition, in combination with the video transmission method in the foregoing embodiments, the embodiments of the present application may provide a storage medium to implement. The storage medium has a computer program stored thereon; the computer program, when executed by a processor, implements any of the video transmission methods in the above embodiments.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above examples only express several embodiments of the present application, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. The utility model provides a network hard disk video recorder under domestic wireless network which characterized in that, network hard disk video recorder includes the anti-system module:
the anti-braking module monitors all wireless transmission systems in a video transmission channel, wherein each wireless transmission system comprises an access point and a terminal, the terminal corresponds to the access point, the anti-braking module works in a probe mode, and the access points comprise other routers in the same channel;
under the condition that the video transmission state of the network video recorder is blocked, the counter module selects a target access point from the access points;
the anti-braking module simulates the network name of the target access point, so that a terminal corresponding to the target access point is connected to the anti-braking module to interrupt the wireless transmission process of the target access point, wherein the anti-braking module works in an access point mode.
2. The network video recorder of claim 1, wherein after the wireless transmission process of the target access point is interrupted, if the video transmission status is stuck, the countering module switches the target access points in sequence and simulates the network name of the switched target access point.
3. The network video recorder of claim 1, wherein the countering module selects a target access point among the access points comprises:
the control method comprises the steps that a counter module acquires a terminal with the highest busy degree in a busy degree list, an access point corresponding to the terminal with the highest busy degree serves as a target access point, and the terminals are sequenced according to the busy degrees of the terminals of all wireless transmission systems in a video transmission channel to acquire the busy degree list of the terminals.
4. The network video recorder of claim 3, wherein after the wireless transmission process of the target access point is interrupted, if the video transmission status is stuck, the countering module switches the target access points in sequence according to the busy level list, and simulates the network names of the switched target access points.
5. The network hard disk recorder of claim 1, wherein determining the video transmission status comprises:
the control method comprises the steps that the control module acquires video transmission parameters of the network hard disk video recorder, and under the condition that the video transmission parameters are not in a preset parameter range, the video transmission state is judged to be pause, wherein the video transmission parameters comprise at least one of frame skipping rate, frame skipping duration and transmission delay.
6. The network video recorder of claim 1, wherein the countering module monitors all wireless transmission systems in the video transmission channel after the wireless transmission process of the target access point is interrupted and the video transmission status is normal, wherein the countering module operates in a probe mode.
7. The video recorder of claim 1, further comprising a video transmission module, wherein the video transmission module is configured to receive a monitoring video, and the countering module obtains a video transmission parameter through the video transmission module and determines the video transmission status according to the video transmission parameter.
8. The network hard disk recorder of claim 3, wherein the network hard disk recorder comprises a memory;
the memory is configured to store the busy level list, where the busy level list includes an access point and a terminal in the wireless transmission system, and a physical address of the terminal.
9. The network video recorder according to any of claims 1 to 8, wherein the countering module comprises an antenna for monitoring all wireless transmission systems in the video transmission channel.
10. A video transmission system under a home wireless network is characterized by comprising a network video recorder and a network camera, wherein the network video recorder comprises a copy module;
the anti-system module monitors all wireless transmission systems in a video transmission channel, wherein the wireless transmission systems comprise access points and terminals, the terminals correspond to the access points, the anti-system module works in a probe mode, and the access points comprise other routers in the same channel;
under the condition that the video transmission state between the network camera and the network hard disk video recorder is blocked, the reverse module selects a target access point from the access points;
the anti-braking module simulates the network name of the target access point, so that a terminal corresponding to the target access point is connected to the anti-braking module to interrupt the wireless transmission process of the target access point, wherein the anti-braking module works in an access point mode.
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