WO2019233296A1 - 设备的远程控制 - Google Patents

设备的远程控制 Download PDF

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Publication number
WO2019233296A1
WO2019233296A1 PCT/CN2019/088368 CN2019088368W WO2019233296A1 WO 2019233296 A1 WO2019233296 A1 WO 2019233296A1 CN 2019088368 W CN2019088368 W CN 2019088368W WO 2019233296 A1 WO2019233296 A1 WO 2019233296A1
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Prior art keywords
frame rate
remote control
code rate
data
nvr
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PCT/CN2019/088368
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English (en)
French (fr)
Inventor
杭振
Original Assignee
杭州海康威视数字技术股份有限公司
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Publication of WO2019233296A1 publication Critical patent/WO2019233296A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/02—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP]
    • H04L67/025—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP] for remote control or remote monitoring of applications
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/134—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or criterion affecting or controlling the adaptive coding
    • H04N19/146—Data rate or code amount at the encoder output
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/169—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
    • H04N19/17—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object
    • H04N19/172—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object the region being a picture, frame or field
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/70—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by syntax aspects related to video coding, e.g. related to compression standards

Definitions

  • the present disclosure relates to video surveillance technology, and particularly to remote control of equipment.
  • NVR Network Video Recorder, NVR
  • CCTV Closed Circuit Television System
  • the functions supported by NVR are diverse and complex.
  • the operation difficulty of NVR configuration and maintenance has also increased. Big, if all NVR configuration and maintenance are performed by professional technicians on-site, it is not only inefficient, but also too costly.
  • a device control method which is applied to an NVR.
  • the method includes:
  • the method further includes:
  • a coding frame rate of the coded data stream or / and a code rate for sending the coded data stream is dynamically adjusted according to the amount of data in the sending buffer.
  • the dynamically adjusting the encoding frame rate or / and the code rate according to the amount of data in the sending buffer includes:
  • the dynamically adjusting the encoding frame rate or / and the code rate according to the amount of data in the sending buffer includes:
  • the currently used coding frame rate or / and code rate is increased; wherein the second preset threshold is less than or equal to the first preset threshold .
  • the sending the encoded data stream to a remote control center includes:
  • the real-time streaming protocol RTSP is used to send the encoded data stream to a remote control center.
  • a device control device which is applied to an NVR, and the device includes:
  • a picture processing unit configured to obtain an output window picture of the NVR, and encode the obtained output window picture to obtain an encoded data stream;
  • a transmission unit configured to send the encoded data stream to a remote control center
  • the transmission unit is further configured to receive a remote control instruction sent by the remote control center;
  • An instruction processing unit is configured to convert the remote control instruction into a local control instruction and execute the local control instruction.
  • the device further includes:
  • the adjusting unit is configured to dynamically adjust a coding frame rate of the coded data stream or / and a code rate for sending the coded data stream according to the amount of data in the sending buffer.
  • the adjusting unit is specifically configured to query a correspondence between a preset data proportion interval and a coding frame rate or / and a code rate according to the data proportion in the transmission buffer to determine the transmission buffer.
  • the target coding frame rate or / and code rate corresponding to the data proportion in the zone; where the higher the value of the data proportion interval, the smaller the corresponding coding frame rate or / and code rate; and the currently used coding frame rate
  • the or / and code rate is updated to the target encoding frame rate or / and code rate.
  • the adjustment unit is specifically configured to reduce a currently used encoding frame rate or / and a code rate when a data proportion of the transmission buffer exceeds a first preset threshold; When the data proportion is lower than the second preset threshold, the currently used encoding frame rate or / and code rate is increased; wherein the second preset threshold is less than or equal to the first preset threshold.
  • the transmission unit is specifically configured to send the encoded data stream to a remote control center by using a real-time streaming protocol RTSP.
  • RTSP real-time streaming protocol
  • an electronic device including a processor, a communication interface, a storage medium, and a communication bus, wherein the processor, the communication interface, and the storage medium complete communication with each other through the communication bus;
  • the processor is configured to implement the steps of the foregoing device control method when executing a program stored on a storage medium.
  • a computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the foregoing device control method are implemented.
  • the NVR obtains an output window picture of the NVR and encodes the obtained output window picture to obtain an encoded data stream, and sends the encoded data stream to a remote control center to ensure the picture. At the same time, it saves bandwidth resources; when the NVR receives the remote control instruction sent by the remote control center, it converts the received remote control instruction into a local control instruction and executes the local control instruction to realize the NVR
  • the remote control improves the efficiency of NVR configuration and maintenance operations and reduces costs.
  • Fig. 1 is a schematic structural diagram of a device control system according to an exemplary embodiment of the present disclosure.
  • Fig. 2 is a schematic flowchart of a device control method according to an exemplary embodiment of the present disclosure.
  • Fig. 3 is a schematic structural diagram of a specific application scenario shown in an exemplary embodiment of the present disclosure.
  • FIG. 4A is a schematic flowchart of a code stream process according to an exemplary embodiment of the present disclosure.
  • Fig. 4B is a schematic flowchart of a control instruction process according to an exemplary embodiment of the present disclosure.
  • Fig. 5 is a schematic structural diagram of a device control apparatus according to an exemplary embodiment of the present disclosure.
  • Fig. 6 is a schematic structural diagram of a device control apparatus according to another exemplary embodiment of the present disclosure.
  • Fig. 7 is a schematic diagram of a hardware structure of an electronic device according to an exemplary embodiment of the present disclosure.
  • the device control system includes an NVR terminal 101 and a remote control center 102.
  • the NVR terminal 101 includes at least NVR1010
  • the first display device 1011 the display device may be a display device that comes with the NVR (if present) or an external display device that is connected to the NVR
  • the remote control center 102 includes a second display device 1020 and an input device 1021 (such as a mouse, a keyboard, etc.) ).
  • the NVR1010 can use a DSP (Digital Signal Processing) codec chip to capture the output window screen of the NVR1010 (displayed in the first display device 1011), and the captured output window screen Perform H.264 (a digital video codec standard) encoding, and then send the obtained H.264 code stream to the remote control center 102.
  • DSP Digital Signal Processing
  • the remote control center 102 When the remote control center 102 receives the H.264 stream sent by the NVR1010, it can decode it and display it on the second display device 1020, and then the technicians of the remote control center 102 can remotely view the real-time operation window screen of the NVR1010. , And input corresponding control instructions (such as mouse or / and keyboard events) through the input device 1021.
  • control instructions such as mouse or / and keyboard events
  • the second display device 1020 obtains the control instruction input locally and transmits it to the NVR terminal 101.
  • the NVR1010 When the NVR1010 receives a remote control instruction, it can convert the received remote control instruction into a local control instruction and execute the local control instruction, so that the remote control of the NVR can be realized, the efficiency of operations such as the configuration and maintenance of the NVR is improved, and the NVR10 is reduced Cost.
  • FIG. 2 is a device control method according to an embodiment of the present disclosure.
  • the device control method may be applied to an NVR (as shown in FIG. 1, the NVR1010 in the device control system).
  • the device The control method may include the following steps.
  • Step S200 Obtain an output window picture of the NVR, and encode the obtained output window picture to obtain an encoded data stream.
  • the NVR may use a DSP encoding chip to capture an output window picture of the NVR.
  • the window picture is a real-time output of the NVR in a display device (such as the first display device 1011 in FIG. 1) and is used to reflect the NVR.
  • H.264 standard is used as an example for description, but the standard for encoding the output window picture is not limited to H.264.
  • Step S210 Send the obtained H.264 code stream to a remote control center.
  • the NVR 1010 may send the obtained H.264 code stream to the remote control center 102.
  • the NVR 1010 may send the H.264 code stream to the remote control center 102 through a remote control connection with the remote control center 102.
  • the remote control connection may be established by the NVR1010 with the remote control center 102 when triggered by remote control (triggered by the NVR1010 or triggered by the remote control center 102), or the remote control connection may always exist during normal operation of the NVR1010.
  • the NVR 1010 may send the H.264 code stream to the remote control center 102 through RTSP (Real Time Streaming Protocol).
  • RTSP Real Time Streaming Protocol
  • the remote control center 102 when the remote control center 102 receives the H.264 code stream sent by the NVR 1010, it can decode it and display it on a local display device (such as the second display device 1020 in FIG. 1) for remote control.
  • the service technicians of the center 102 can watch the output window screen of the NVR1010 in real time, and input control instructions according to the actual situation (such as through the input device 1021 in FIG. 1).
  • the display device 1020 (or other device (if any)) of the remote control center 102 can obtain control instructions input locally, such as capturing mouse events (position and operation of the mouse in the output window screen (such as clicking or double-clicking, etc.)) or / And keyboard events (keyboard operations (such as information input)), and send the obtained control instructions to the NVR1010, such as the TCP (Transmission Control Protocol) protocol to the NVR1010.
  • control instructions input such as capturing mouse events (position and operation of the mouse in the output window screen (such as clicking or double-clicking, etc.)) or / And keyboard events (keyboard operations (such as information input)
  • the NVR1010 such as the TCP (Transmission Control Protocol) protocol to the NVR1010.
  • TCP Transmission Control Protocol
  • Step S220 Receive a remote control instruction sent by a remote control center.
  • Step S230 Convert the remote control instruction into a local control instruction, and execute the local control instruction.
  • the NVR 1010 when the NVR 1010 receives a remote control instruction sent by the remote control center 102, it may convert the received remote control instruction into a local control instruction, such as a local mouse event or / and keyboard event, and execute the Local control instructions.
  • a local control instruction such as a local mouse event or / and keyboard event
  • the NVR captures the output window picture through the DPS codec chip, and performs H.264 encoding on the captured output window picture, and further
  • the obtained code stream is sent to the remote control center, and the remote control center decodes and performs remote control according to the obtained output window screen, which improves the smoothness of screen transmission and the sharpness of the screen, and saves bandwidth resources; when the NVR receives
  • the remote control instruction sent by the remote control center is converted into a local control instruction and executed, the remote control of the NVR is realized, the efficiency of operations such as the configuration and maintenance of the NVR is improved, and the cost is reduced.
  • the NVR transmits the H.264 code stream to the remote control center
  • the amount of data (such as the encoding frame rate or / and the code rate is too high) may cause the transmission buffer to Accumulate a large amount of data, and then affect the real-time nature of the picture transmission.
  • the NVR 1010 can dynamically adjust the encoding frame rate or / and the code rate according to the amount of data in the transmission buffer.
  • the amount of data in the send buffer when the amount of data in the send buffer is large (such as exceeding a preset threshold), reduce the encoding frame rate or / and code rate; when the amount of data in the send buffer is small (such as below a preset threshold) , Increase the encoding frame rate or / and code rate, that is, the amount of data in the send buffer is negatively related to the encoding frame rate or / and code rate.
  • the dynamically adjusting the encoding frame rate or / and the code rate according to the amount of data in the sending buffer may include:
  • the data proportion in the sending buffer query the correspondence between the preset data proportion interval and the encoding frame rate or / and code rate to determine the target encoding frame rate or / and code corresponding to the data proportion in the sending buffer.
  • the higher the value of the data proportion the smaller the corresponding coding frame rate or / and code rate;
  • the data proportion interval in the transmission buffer and the encoding frame rate or / and Correspondence between code rates (referred to herein as the correspondence between the preset data ratio interval and the encoding frame rate or / and code rate), where the data ratio in the send buffer is the amount of data in the send buffer and the transmission.
  • the ratio of the total space size of the buffer the higher the data proportion (ie, the larger the amount of data buffered by the buffer), the smaller the corresponding encoding frame rate or / and code rate.
  • the NVR can periodically (such as periodically) detect the data proportion in the transmission buffer, and according to the detected data proportion in the transmission buffer , Query the correspondence between the preset data proportion interval and the encoding frame rate or code rate to determine the encoding frame rate or code rate corresponding to the detected data proportion in the send buffer (referred to as the target in this article Encoding frame rate or / and code rate).
  • the NVR can compare the currently used encoding frame rate or / and code rate with the target encoding frame rate or / and code rate; if they are not consistent, the NVR can update the currently used encoding frame rate or / and code rate as the target Encoding frame rate or / and code rate, and using the updated encoding frame rate or / and code rate (ie, the target encoding frame rate or / and code rate) for encoding and code stream transmission.
  • the NVR when the NVR determines that the currently used encoding frame rate or / and code rate is consistent with the target encoding frame rate or / and code rate, the NVR may maintain the currently used encoding frame rate or / and Bit rate.
  • the foregoing dynamically adjusting the encoding frame rate or / and the code rate according to the amount of data in the sending buffer may include:
  • the currently used encoding frame rate or / and code rate is increased; wherein the second preset threshold is less than or equal to the first preset threshold.
  • a threshold value for adjusting the encoding frame rate or / and the code rate may be set in the NVR in advance.
  • the NVR can periodically (such as periodically) detect the data proportion in the sending buffer and compare the detected data proportion in the sending buffer. With preset thresholds.
  • the currently used coding frame rate or / and code rate is reduced.
  • the currently used encoding frame rate or / and code rate is adjusted downward according to a preset adjustment amplitude or adjustment ratio (referred to herein as the first adjustment amplitude or adjustment ratio).
  • the currently used coding frame rate or / and code rate is increased.
  • the currently used encoding frame rate or / and code rate is adjusted upward according to a preset adjustment amplitude or adjustment ratio (referred to herein as a second adjustment amplitude or adjustment ratio).
  • the second preset threshold is less than or equal to the first preset threshold, and the second adjustment range or adjustment ratio and the first adjustment range or ratio may be the same or different.
  • the above-mentioned second preset threshold is smaller than the first preset threshold to avoid reducing (increasing) the currently used encoding frame rate or / and code rate, and then quickly increasing (decreasing) the currently used encoding.
  • FIG. 3 is a schematic structural diagram of a specific application scenario according to an embodiment of the present disclosure.
  • the application scenario includes a remote control center 302 and an NVR terminal 301.
  • the remote control center 302 includes a server 3021 And PC (Personal Computer) 3022
  • NVR end 301 includes NVR3011 and VGA (Video Graphics Array) / HDMI (High Definition Multimedia Interface) display 3012 and input devices such as mouse and keyboard (Not shown in the figure).
  • the NVR end 301 and the remote control center 302 are interconnected through a network.
  • the implementation process of the device control solution provided by the embodiment of the present disclosure is as follows:
  • the NVR3011 captures the NVR operation window screen displayed on the VGA / HDMI display 3012 in real time through the DSP codec chip, and performs H.264 encoding to obtain the H.264 code stream, and saves the H.264 code stream in the code stream sending buffer. Area.
  • the NVR 3011 sends the H.264 code stream in the sending buffer to the code stream receiving buffer in the server 3021 of the remote control center 302 through the RTSP protocol.
  • the NVR3011 can periodically detect the data proportion in the code stream transmission buffer, and query Table 1 based on the detected data proportion in the code stream transmission buffer.
  • the NVR3011 After the NVR3011 determines the target coding frame rate and target code rate, it can perform coding and stream transmission according to the target coding frame rate and target code rate.
  • the NVR3011 can determine that the target coded frame rate corresponding to the data proportion DR0 is FR2 and the target code rate is BR2. Furthermore, the NVR3011 can perform H.264 encoding at the encoding frame rate FR2 and H.264 code stream transmission at the bit rate BR2. If the currently used encoding frame rate and code rate are not FR2 and BR2, the encoding frame rate and code rate need to be updated.
  • the server 3021 of the remote control center 302 reads the H.264 code stream from the code stream receiving buffer, decodes the H.264 code stream through the decoding library, and displays it on the display of the PC 3022, thereby the remote control center
  • the technician of 302 can remotely view the operation window screen of NVR3011.
  • the schematic diagram can be shown in FIG. 4A. Control instruction transmission
  • PC3022 captures mouse events (mouse position and operation) and keyboard events (input operations) on the device, generates control instructions and saves them in the control instruction sending buffer, and sends the control instructions in the control instruction sending buffer to the NVR end 301 in real time Control instruction receive buffer.
  • NVR3011 obtains control instructions (remote control instructions) from the control instruction receiving buffer, converts the obtained remote control instructions into local control instructions (that is, converts the remote control instructions into local mouse events and keyboard events), and executes the local control Instructions to achieve remote control center 302 control of NVR3011, its schematic diagram can be shown in Figure 4B.
  • the NVR captures an output window picture of the NVR in real time by using a DSP codec chip, and performs H.264 encoding on the captured output window picture to obtain an H.264 code stream, and
  • the .264 code stream is sent to the remote control center, which saves bandwidth resources while ensuring the smoothness and clarity of the picture; when the NVR receives the remote control command sent by the remote control center, it converts the received remote control command to local
  • the control instruction and the execution of the local control instruction realize the remote control of the NVR, improve the efficiency of the NVR's configuration and maintenance operations, and reduce the cost.
  • FIG. 5 is a schematic structural diagram of a device control apparatus according to an embodiment of the present disclosure.
  • the device control apparatus may be applied to the NVR in the foregoing method embodiment.
  • the device control apparatus may include :
  • a picture processing unit 510 configured to obtain an output window picture of the NVR, and encode the obtained output window picture to obtain an encoded data stream;
  • a transmission unit 520 configured to send the encoded data stream to a remote control center
  • the transmission unit 520 is further configured to receive a remote control instruction sent by the remote control center;
  • the instruction processing unit 530 is configured to convert the remote control instruction into a local control instruction and execute the local control instruction.
  • FIG. 6 is a schematic structural diagram of another device control apparatus according to an embodiment of the present disclosure.
  • the device control apparatus shown in FIG. Can include:
  • the adjusting unit 540 is configured to dynamically adjust a coding frame rate of the coded data stream or / and a code rate for sending the coded data stream according to the amount of data in the sending buffer.
  • the adjusting unit 540 is specifically configured to query a correspondence between a preset data proportion interval and a coding frame rate or / and a code rate according to the data proportion in the sending buffer. To determine a target coding frame rate or / and code rate corresponding to the data proportion in the sending buffer; wherein the higher the value of the data proportion interval, the smaller the corresponding coding frame rate or / and code rate; and Update the currently used encoding frame rate or / and code rate to the target encoding frame rate or / and code rate.
  • the adjusting unit 540 is specifically configured to reduce a currently used encoding frame rate or / and a code rate when a data proportion of the sending buffer exceeds a first preset threshold; When the data proportion of the sending buffer is lower than the second preset threshold, the currently used coding frame rate or / and code rate is increased; wherein the second preset threshold is less than or equal to the first preset threshold .
  • the transmission unit 520 is specifically configured to send the encoded data stream to a remote control center by using a real-time streaming transmission protocol RTSP.
  • FIG. 7 is a schematic diagram of a hardware structure of an electronic device according to an embodiment of the present disclosure.
  • the electronic device may include a processor 701, a communication interface 702, a storage medium 703, and a communication bus 704.
  • the processor 701, the communication interface 702, and the storage medium 703 complete communication with each other through a communication bus 704.
  • a computer program is stored on the storage medium 703; the processor 701 can execute the device control method described above by executing the program stored on the storage medium 703.
  • the storage medium 703 mentioned herein may be any electronic, magnetic, optical or other physical storage device, and may contain or store information such as executable instructions, data, and so on.
  • the storage medium 703 may be: RAM (Radom Access Memory), volatile memory, non-volatile memory, flash memory, storage drive (such as hard drive), solid state hard disk, any type of storage disk (such as Compact discs, DVDs, etc.), or similar storage media, or a combination thereof.
  • An embodiment of the present disclosure further provides a machine-readable storage medium storing a computer program, such as the storage medium 703 in FIG. 7, and the computer program may be executed by the processor 701 in the electronic device shown in FIG. 7 to implement the foregoing Describe device control methods.
  • a computer program such as the storage medium 703 in FIG. 7
  • the computer program may be executed by the processor 701 in the electronic device shown in FIG. 7 to implement the foregoing Describe device control methods.

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Abstract

本公开提供一种设备控制方法，该方法包括：获取NVR的输出窗口画面，并对获取到的输出窗口画面进行编码，以得到编码数据流；将所述编码数据流发送给远程控制中心；接收所述远程控制中心发送的远程控制指令；将所述远程控制指令转换为本地控制指令，并执行所述本地控制指令。

Description

设备的远程控制 技术领域
本公开涉及视频监控技术，尤其涉及设备的远程控制。
背景技术
NVR(Network Video Recorder，网络硬盘录像机)设备属于CCTV(Closed Circuit Television，闭路电视监控系统)行业应用的电子产品，NVR支持的功能多样且复杂，相应地，NVR的配置和维护等操作难度也增大了，若所有的NVR配置和维护均由专业技术人员到现场进行操作，不仅效率低，且成本太高。
发明内容
根据本公开实施例的第一方面，提供一种设备控制方法，应用于NVR，该方法包括：
获取所述NVR的输出窗口画面，并对所获取到的输出窗口画面进行编码，以得到编码数据流；
将所述编码数据流发送给远程控制中心；
接收所述远程控制中心发送的远程控制指令；
将所述远程控制指令转换为本地控制指令，并执行所述本地控制指令。
可选的，所述方法还包括：
根据发送缓冲区中的数据量动态调整所述编码数据流的编码帧率或/和用于发送所述编码数据流的码率。
可选的，所述根据发送缓冲区中的数据量动态调整编码帧率或/和码率，包括：
根据所述发送缓冲区中的数据占比，查询预设数据占比区间与编码帧率或/和码率的对应关系，以确定所述发送缓冲区中的数据占比对应的目标编码帧率或/和码率；其中，数据占比区间的数值越高，对应的编码帧率或/和码率越小；
将当前使用的编码帧率或/和码率更新为所述目标编码帧率或/和码率。
可选的，所述根据发送缓冲区中的数据量动态调整编码帧率或/和码率，包括：
当所述发送缓冲区的数据占比超过第一预设阈值时，降低当前使用的编码帧率或/和码率；
当所述发送缓冲区的数据占比低于第二预设阈值时，提高当前使用的编码帧率或/和码率；其中，所述第二预设阈值小于等于所述第一预设阈值。
可选的，所述将所述编码数据流发送给远程控制中心，包括：
采用实时流传输协议RTSP将所述编码数据流发送给远程控制中心。
根据本公开实施例的第二方面，提供一种设备控制装置，应用于NVR，该装置包括：
画面处理单元，用于获取所述NVR的输出窗口画面，并对所获取的输出窗口画面进行编码，以得到编码数据流；
传输单元，用于将所述编码数据流发送给远程控制中心；
所述传输单元，还用于接收所述远程控制中心发送的远程控制指令；
指令处理单元，用于将所述远程控制指令转换为本地控制指令，并执行所述本地控制指令。
可选的，所述装置还包括：
调整单元，用于根据发送缓冲区中的数据量动态调整所述编码数据流的编码帧率或/和用于发送所述编码数据流的码率。
可选的，所述调整单元，具体用于根据所述发送缓冲区中的数据占比，查询预设数据占比区间与编码帧率或/和码率的对应关系，以确定所述发送缓冲区中的数据占比对应的目标编码帧率或/和码率；其中，数据占比区间的数值越高，对应的编码帧率或/和码率越小；以及将当前使用的编码帧率或/和码率更新为所述目标编码帧率或/和码率。
可选的，所述调整单元，具体用于当所述发送缓冲区的数据占比超过第一预设阈值时，降低当前使用的编码帧率或/和码率；当所述发送缓冲区的数据占比低于第二预设阈值时，提高当前使用的编码帧率或/和码率；其中，所述第二预设阈值小于等于所述第一预设阈值。
可选的，所述传输单元，具体用于采用实时流传输协议RTSP将所述编码数据流发送给远程控制中心。
根据本公开实施例的第三方面，提供一种电子设备，包括处理器、通信接口、存储 介质和通信总线，其中，处理器，通信接口，存储介质通过通信总线完成相互间的通信；
存储介质，用于存放计算机程序；
处理器，用于执行存储介质上所存放的程序时，实现上述设备控制方法步骤。
根据本公开实施例的第四方面，提供一种计算机可读存储介质，所述计算机可读存储介质内存储有计算机程序，所述计算机程序被处理器执行时实现上述设备控制方法步骤。
本公开实施例的设备控制方法，NVR通过获取NVR的输出窗口画面，并对所获取的输出窗口画面进行编码，以得到编码数据流，并将该编码数据流发送给远程控制中心，在保证画面的流畅性和清晰度的同时，节省了带宽资源；NVR接收到远程控制中心发送的远程控制指令时，将接收到的远程控制指令转换为本地控制指令，并执行该本地控制指令，实现了NVR的远程控制，提高了NVR的配置和维护等操作的效率，并降低了成本。
附图说明
图1是本公开一示例性实施例示出的一种设备控制系统的架构示意图。
图2是本公开一示例性实施例示出的一种设备控制方法的流程示意图。
图3是本公开一示例性实施例示出的一种具体应用场景的架构示意图。
图4A是本公开一示例性实施例示出的一种码流处理的流程示意图。
图4B是本公开一示例性实施例示出的一种控制指令处理的流程示意图。
图5是本公开一示例性实施例示出的一种设备控制装置的结构示意图。
图6是本公开又一示例性实施例示出的一种设备控制装置的结构示意图。
图7是本公开一示例性实施例示出的一种电子设备的硬件结构示意图。
具体实施方式
这里将详细地对示例性实施例进行说明，其示例表示在附图中。下面的描述涉及附图时，除非另有表示，不同附图中的相同数字表示相同或相似的要素。以下示例性实施例中所描述的实施方式并不代表与本公开相一致的所有实施方式。相反，它们仅是与如所附权利要求书中所详述的、本公开的一些方面相一致的装置和方法的例子。
在本公开使用的术语是仅仅出于描述特定实施例的目的，而非旨在限制本公开。在本公开和所附权利要求书中所使用的单数形式的“一种”、“所述”和“该”也旨在包括多数形式，除非上下文清楚地表示其他含义。
为了使本领域技术人员更好地理解本公开实施例提供的技术方案，下面先对本公开实施例适用的系统架构进行简单说明。
请参见图1，为本公开实施例提供的一种设备控制系统的架构示意图，如图1所示，在设备控制系统中包括NVR端101和远程控制中心102；其中，NVR端101至少包括NVR1010和第一显示设备1011(该显示设备可以为NVR自带的显示设备(若存在)或NVR外接的显示设备)；远程控制中心102包括第二显示设备1020和输入设备1021(如鼠标、键盘等)。
在该设备控制系统中，NVR1010可以使用DSP(Digital Signal Processing，数字信号处理)编解码芯片抓取NVR1010的输出窗口画面(显示在第一显示设备1011中)，并将抓取到的输出窗口画面进行H.264(一种数字视频编解码器标准)编码，进而将得到的H.264码流发送给远程控制中心102。
远程控制中心102接收到NVR1010发送的H.264码流时，可以对其进行解码，并在第二显示设备1020中显示，进而远程控制中心102的技服人员可以远程查看NVR1010的实时操作窗口画面，并通过输入设备1021输入相应的控制指令(如鼠标或/和键盘事件)。
第二显示设备1020获取本地输入的控制指令，并将其传输给NVR端101。
NVR1010接收到远程控制指令时，可以将接收到的远程控制指令转换为本地控制指令，并执行本地控制指令，从而可以实现NVR的远程控制，提高了NVR的配置和维护等操作的效率，并降低了成本。
为了使本公开实施例的上述目的、特征和优点能够更加明显易懂，下面结合附图对本公开实施例中技术方案作进一步详细的说明。
请参见图2，为本公开实施例提供的一种设备控制方法，其中，该设备控制方法可以应用于NVR(如图1所示设备控制系统中的NVR1010)，如图2所示，该设备控制方法可以包括以下步骤。
步骤S200、获取NVR的输出窗口画面，并对获取到的输出窗口画面进行编码，以得到编码数据流。
本公开实施例中，NVR可以使用DSP编码芯片抓取NVR的输出窗口画面，该窗口画面为该NVR在显示设备(如图1中的第一显示设备1011)中实时输出的用于反映NVR的操作的画面，并利用诸如H.264等的压缩编码标准对抓取到的输出窗口画面进行编码，以得到编码数据流。在下文中，以H.264标准为例进行说明，但是对输出窗口画面进行编码的标准并不限于H.264。
步骤S210、将得到的H.264码流发送给远程控制中心。
本公开实施例中，NVR1010得到H.264码流之后，可以将得到的H.264码流发送给远程控制中心102。
例如，NVR1010可以通过与远程控制中心102之间的远程控制连接将H.264码流发送给远程控制中心102。
其中，该远程控制连接可以由NVR1010在需要进行远程控制时与远程控制中心102建立(由NVR1010触发或远程控制中心102触发)，或者，该远程控制连接可以在NVR1010正常运行时一直存在。
在一个示例中，为了提高H.264码流传输的实时性，NVR1010可以通过RTSP(Real Time Streaming Protocol，实时流传输协议)将H.264码流发送给远程控制中心102。
本公开实施例中，远程控制中心102接收到NVR1010发送的H.264码流时，可以对其进行解码，并在本地显示设备(如图1中的第二显示设备1020)显示，以便远程控制中心102的技服人员能够实时观看NVR1010的输出窗口画面，并根据实际情况输入控制指令(如通过图1中的输入设备1021)。
远程控制中心102的显示设备1020(或其它设备(若存在))可以获取本地输入的控制指令，如捕捉鼠标事件(鼠标在输出窗口画面中的位置和操作(如单击或双击等))或/和键盘事件(键盘操作(如信息输入))，并将获取到的控制指令发送给NVR1010，如通过TCP(Transmission Control Protocol，传输控制协议)协议发送给NVR1010。
步骤S220、接收远程控制中心发送的远程控制指令。
步骤S230、将远程控制指令转换为本地控制指令，并执行该本地控制指令。
本公开实施例中，NVR1010接收到远程控制中心102发送的远程控制指令时，可以将接收到的远程控制指令转换为本地控制指令，如转换为本地的鼠标事件或/和键盘事件，并执行该本地控制指令。
可见，在图2所示方法流程中，通过在视频监控系统中应用远程协助方案，NVR通过DPS编解码芯片抓取输出窗口画面，并对抓取到的输出窗口画面进行H.264编码，进而将得到的码流发送给远程控制中心，由远程控制中心解码后根据得到的输出窗口画面进行远程控制，提高了画面传输的流畅性和画面的清晰度，并节省了带宽资源；当NVR接收到远程控制中心的发送的远程控制指令时，将其转换为本地控制指令并执行，从而实现了NVR的远程控制，提高了NVR的配置和维护等操作的效率，并降低了成本。
进一步地，在本公开实施例中，考虑到NVR向远程控制中心传输H.264码流时，可能会由于数据量过大(如编码帧率或/和码率过高)导致发送缓冲区中累积大量数据，进而影响画面传输的实时性。
相应地，在本公开其中一个实施例中，NVR1010可以根据发送缓冲区中的数据量动态调整编码帧率或/和码率。
例如，当发送缓冲区中的数据量较多(如超过预设阈值)时，降低编码帧率或/和码率；当发送缓冲区中的数据量较少(如低于预设阈值)时，提高编码帧率或/和码率，即发送缓冲区中的数据量与编码帧率或/和码率负相关。
在本公开的一种实施方式中，上述根据发送缓冲区中的数据量动态调整编码帧率或/和码率，可以包括：
根据发送缓冲区中的数据占比，查询预设数据占比区间与编码帧率或/和码率的对应关系，以确定发送缓冲区中的数据占比对应的目标编码帧率或/和码率；其中，数据占比的数值越高，对应的编码帧率或/和码率越小；
若当前使用的编码帧率或/和码率与所述目标编码帧率或/和码率不一致，则将当前使用的编码帧率或/和码率更新为所述目标编码帧率或/和码率。
在该实施方式中，为了实现NVR根据发送缓冲区中的数据量动态调整编码帧率或/和码率，可以预先在NVR中配置发送缓冲区中的数据占比区间与编码帧率或/和码率的对应关系(本文中称为预设数据占比区间与编码帧率或/和码率的对应关系)，其中，发送缓冲区中的数据占比为发送缓冲区中的数据量与发送缓冲区的总空间大小的比值，数据占比越高(即，缓冲区缓存的数据量越大)，对应的编码帧率或/和码率越小。
相应地，NVR向远程控制中心传输H.264码流的过程中，NVR可以定时(如周期性地)检测发送缓冲区中的数据占比，并根据检测到的发送缓冲区中的数据占比，查询预设数据占比区间与编码帧率或/和码率的对应关系，以确定检测到的发送缓冲区中的数 据占比对应的编码帧率或/和码率(本文中称为目标编码帧率或/和码率)。
进而，NVR可以比较当前使用的编码帧率或/和码率与目标编码帧率或/和码率；若二者不一致，则NVR可以将当前使用的编码帧率或/和码率更新为目标编码帧率或/和码率，并使用更新后的编码帧率或/和码率(即目标编码帧率或/和码率)进行编码和码流传输。
需要说明的是，在该实施方式中，当NVR确定当前使用的编码帧率或/和码率与目标编码帧率或/和码率一致时，NVR可以保持当前使用的编码帧率或/和码率。
在该实施例的另一种实施方式中，上述根据发送缓冲区中的数据量动态调整编码帧率或/和码率，可以包括：
当发送缓冲区的数据占比超过第一预设阈值时，降低当前使用的编码帧率或/和码率；
当发送缓冲区的数据占比低于第二预设阈值时，提高当前使用的编码帧率或/和码率；其中，第二预设阈值小于等于第一预设阈值。
在该实施方式中，为了实现NVR根据发送缓冲区中的数据量动态调整编码帧率或/和码率，可以预先在NVR中设置用于调整编码帧率或/和码率的阈值。
相应地，NVR向远程控制中心传输H.264码流的过程中，NVR可以定时(如周期性地)检测发送缓冲区中的数据占比，并比较检测到的发送缓冲区中的数据占比与预设阈值。
在该实施方式中，当发送缓冲区中的数据占比超过预设阈值(本文中称为第一预设阈值)时，降低当前使用的编码帧率或/和码率。例如，按照预先设置的调整幅度或调整比例(本文中称为第一调整幅度或调整比例)向下调整当前使用的编码帧率或/和码率。
当发送缓冲区中的数据占比低于预设阈值(本文中称为第二预设阈值)时，提高当前使用的编码帧率或/和码率。例如，按照预先设置的调整幅度或调整比例(本文中称为第二调整幅度或调整比例)向上调整当前使用的编码帧率或/和码率。
其中，上述第二预设阈值小于等于第一预设阈值，上述第二调整幅度或调整比例与第一调整幅度或比例可以相同或不相同。
在一个示例中，上述第二预设阈值小于第一预设阈值，以避免出现降低(提高)当前使用的编码帧率或/和码率之后，又很快需要提高(降低)当前使用的编码帧率或/和码率的情况，进而出现震荡，影响H.264码流正常传输。
为了使本领域技术人员更好地理解本公开实施例提供的技术方案，下面结合具体应用场景对本公开实施例提供的技术方案进行说明。
请参见图3，为本公开实施例提供的一种具体应用场景的架构示意图，如图3所示，该应用场景中包括远程控制中心302和NVR端301；其中，远程控制中心302包括服务器3021和PC(Personal Computer，个人计算机)3022，NVR端301包括NVR3011和VGA(Video Graphics Array，视频图形阵列)/HDMI(High Definition Multimedia Interface，高清晰度多媒体接口)显示器3012以及鼠标、键盘等输入设备(未在图中示出)。NVR端301与远程控制中心302通过网络互联。
基于图3所示应用场景，本公开实施例提供的设备控制方案实现流程如下：
一、数据传输
NVR3011通过DSP编解码芯片实时抓取VGA/HDMI显示器3012中显示的NVR的操作窗口画面，并进行H.264编码，得到H.264码流，并将H.264码流保存在码流发送缓冲区。
NVR3011通过RTSP协议将发送缓冲区中的H.264码流发送给远程控制中心302的服务器3021中的码流接收缓冲区。
在该实施例中，NVR3011在传输H.264码流的过程中，可以定时检测码流发送缓冲区中的数据占比，并根据检测到的码流发送缓冲区中的数据占比查询表1所示的数据占比区间与编码帧率和码率的对应关系，以确定检测到的码流发送缓冲区中的数据占比对应的目标编码率和目标码率：
表1
数据占比区间 编码帧率 码率
[0，DR1) FR1 BR1
[DR1，DR2) FR2 BR2
[DR2，DR3) FR3 BR3
… … …
其中，DR3＞DR2＞DR1＞0，FR1＞FR2＞FR3，BR1＞BR2＞BR3。
NVR3011确定了目标编码帧率和目标码率之后，可以按照该目标编码帧率和目标码 率进行编码和码流传输。
假设NVR3011检测到的码流发送缓冲区中的数据占比为DR0，且DR0∈[DR1，DR2)，则NVR3011可以确定数据占比DR0对应的目标编码帧率为FR2，目标码率为BR2。进而，NVR3011可以按照编码帧率FR2进行H.264编码，并按照码率BR2进行H.264码流传输。若当前使用的编码帧率和码率不是FR2和BR2，则需要进行编码帧率和码率更新。
在该实施例中，远程控制中心302的服务器3021从码流接收缓冲区中读取H.264码流，通过解码库解码H.264码流，并显示到PC3022的显示器上，从而远程控制中心302的技服人员可以远程观看NVR3011的操作窗口画面，其示意图可以如图4A所示。二、控制指令传输
PC3022捕获本设备上的鼠标事件(鼠标位置和操作)和键盘事件(输入操作)，生成控制指令保存在控制指令发送缓冲区，并实时将控制指令发送缓冲区中的控制指令发送给NVR端301的控制指令接收缓冲区。
NVR3011从控制指令接收缓冲区中获取控制指令(远程控制指令)，将获取到的远程控制指令转换为本地控制指令(即将远程控制指令转换为本地的鼠标事件和键盘事件)，并执行该本地控制指令，从而实现远程控制中心302对NVR3011的控制，其示意图可以如图4B所示。
本公开实施例中，NVR通过使用DSP编解码芯片实时抓取NVR的输出窗口画面，并对所抓取到的输出窗口画面进行H.264编码，以得到H.264码流，并将该H.264码流发送给远程控制中心，在保证画面的流畅性和清晰度的同时，节省了带宽资源；NVR接收到远程控制中心发送的远程控制指令时，将接收到的远程控制指令转换为本地控制指令，并执行该本地控制指令，实现了NVR的远程控制，提高了NVR的配置和维护等操作的效率，并降低了成本。
以上对本公开提供的方法进行了描述。下面对本公开提供的装置进行描述。
请参见图5，为本公开实施例提供的一种设备控制装置的结构示意图，其中，该设备控制装置可以应用于上述方法实施例中的NVR，如图5所示，该设备控制装置可以包括：
画面处理单元510，用于获取所述NVR的输出窗口画面，并对所获取的输出窗口画面进行编码，以得到编码数据流；
传输单元520，用于将所述编码数据流发送给远程控制中心；
所述传输单元520，还用于接收所述远程控制中心发送的远程控制指令；
指令处理单元530，用于将所述远程控制指令转换为本地控制指令，并执行所述本地控制指令。
请一并参见图6，为本公开实施例提供的另一种设备控制装置的结构示意图，如图6所示，在图5所示设备控制装置的基础上，图6所示设备控制装置还可以包括：
调整单元540，用于根据发送缓冲区中的数据量动态调整编码数据流的编码帧率或/和用于发送编码数据流的码率。
在一种可选的实施方式中，所述调整单元540，具体用于根据所述发送缓冲区中的数据占比，查询预设数据占比区间与编码帧率或/和码率的对应关系，以确定所述发送缓冲区中的数据占比对应的目标编码帧率或/和码率；其中，数据占比区间的数值越高，对应的编码帧率或/和码率越小；以及将当前使用的编码帧率或/和码率更新为所述目标编码帧率或/和码率。
在一种可选的实施方式中，所述调整单元540，具体用于当所述发送缓冲区的数据占比超过第一预设阈值时，降低当前使用的编码帧率或/和码率；当所述发送缓冲区的数据占比低于第二预设阈值时，提高当前使用的编码帧率或/和码率；其中，所述第二预设阈值小于等于所述第一预设阈值。
在一种可选的实施方式中，所述传输单元520，具体用于采用实时流传输协议RTSP将所述编码数据流发送给远程控制中心。
请参见图7，为本公开实施例提供的一种电子设备的硬件结构示意图。该电子设备可以包括处理器701、通信接口702、存储介质703和通信总线704。处理器701、通信接口702以及存储介质703通过通信总线704完成相互间的通信。其中，存储介质703上存放有计算机程序；处理器701可以通过执行存储介质703上所存放的程序，执行上文描述的设备控制方法。
本文中提到的存储介质703可以是任何电子、磁性、光学或其它物理存储装置，可以包含或存储信息，如可执行指令、数据，等等。例如，存储介质703可以是：RAM(Radom Access Memory，随机存取存储器)、易失存储器、非易失性存储器、闪存、存储驱动器(如硬盘驱动器)、固态硬盘、任何类型的存储盘(如光盘、dvd等)，或者类似的存储介质，或者它们的组合。
本公开实施例还提供了一种存储有计算机程序的机器可读存储介质，例如图7中的存储介质703，所述计算机程序可由图7所示电子设备中的处理器701执行以实现上文描述的设备控制方法。
需要说明的是，在本文中，诸如第一和第二等之类的关系术语仅仅用来将一个实体或者操作与另一个实体或操作区分开来，而不一定要求或者暗示这些实体或操作之间存在任何这种实际的关系或者顺序。而且，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者设备不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者设备所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括所述要素的过程、方法、物品或者设备中还存在另外的相同要素。
以上所述仅为本公开的实施例而已，并不用以限制本公开，凡在本公开的精神和原则之内，所做的任何修改、等同替换、改进等，均应包含在本公开保护的范围之内。

Claims (14)

  1. 一种设备控制方法，应用于网络硬盘录像机NVR，该方法包括：
    获取所述NVR的输出窗口画面，并对获取到的输出窗口画面进行编码，以得到编码数据流；
    将所述编码数据流发送给远程控制中心；
    接收所述远程控制中心发送的远程控制指令；
    将所述远程控制指令转换为本地控制指令，并
    执行所述本地控制指令。
  2. 根据权利要求1所述的方法，其特征在于，所述方法还包括：
    根据发送缓冲区中的数据量动态调整所述编码数据流的编码帧率或/和用于发送所述编码数据流的码率。
  3. 根据权利要求2所述的方法，其特征在于，根据所述发送缓冲区中的数据量动态调整所述编码帧率或/和所述码率，包括：
    根据所述发送缓冲区中的数据占比，查询预设数据占比区间与编码帧率或/和码率的对应关系，以确定所述发送缓冲区中的数据占比对应的目标编码帧率或/和码率；其中，数据占比区间的数值越高，对应的编码帧率或/和码率越小；
    将当前使用的编码帧率或/和码率更新为所述目标编码帧率或/和码率。
  4. 根据权利要求2所述的方法，其特征在于，根据所述发送缓冲区中的数据量动态调整所述编码帧率或/和所述码率，包括：
    当所述发送缓冲区的数据占比超过第一预设阈值时，降低当前使用的所述编码帧率或/和所述码率；
    当所述发送缓冲区的数据占比低于第二预设阈值时，提高当前使用的所述编码帧率或/和所述码率；
    其中，所述第二预设阈值小于等于所述第一预设阈值。
  5. 根据权利要求1-4任一项所述的方法，其特征在于，将所述编码数据流发送给所述远程控制中心，包括：
    采用实时流传输协议RTSP将所述编码数据流发送给所述远程控制中心。
  6. 根据权利要求1所述的方法，其特征在于，所述获取所述NVR的输出窗口画面包括：
    利用数据信号处理DSP芯片抓取所述NVR的输出窗口画面。
  7. 根据权利要求1所述的方法，其特征在于，对获取到的输出窗口画面进行压缩 编码，以得到编码数据流，包括：
    利用H.264视频压缩标准对获取到的输出窗口画面进行编码，以得到H.264编码数据流。
  8. 一种设备控制装置，应用于网络硬盘录像机NVR，该装置包括：
    画面处理单元，用于获取所述NVR的输出窗口画面，并对获取到的输出窗口画面进行编码，以得到编码数据流；
    传输单元，用于将所述编码数据流发送给远程控制中心；
    所述传输单元，还用于接收所述远程控制中心发送的远程控制指令；
    指令处理单元，用于将所述远程控制指令转换为本地控制指令，并执行所述本地控制指令。
  9. 根据权利要求8所述的装置，其特征在于，所述装置还包括：
    调整单元，用于根据发送缓冲区中的数据量动态调整所述编码数据流的编码帧率或/和用于发送所述编码数据流的码率。
  10. 根据权利要求9所述的装置，其特征在于，
    所述调整单元，具体用于根据所述发送缓冲区中的数据占比，查询预设数据占比区间与编码帧率或/和码率的对应关系，以确定所述发送缓冲区中的数据占比对应的目标编码帧率或/和码率；其中，数据占比区间的数值越高，对应的编码帧率或/和码率越小；
    将当前使用的编码帧率或/和码率更新为所述目标编码帧率或/和码率。
  11. 根据权利要求9所述的装置，其特征在于，
    所述调整单元，具体用于当所述发送缓冲区的数据占比超过第一预设阈值时，降低当前使用的所述编码帧率或/和所述码率；当所述发送缓冲区的数据占比低于第二预设阈值时，提高当前使用的所述编码帧率或/和所述码率；
    其中，所述第二预设阈值小于等于所述第一预设阈值。
  12. 根据权利要求8-11任一项所述的装置，其特征在于，
    所述传输单元，具体用于采用实时流传输协议RTSP将所述编码数据流发送给所述远程控制中心。
  13. 一种电子设备，包括处理器、通信接口、存储介质和通信总线，其中，处理器，通信接口，存储介质通过通信总线完成相互间的通信；
    存储介质，用于存放计算机程序；
    处理器，用于执行存储介质上所存放的程序时，实现权利要求1-7任一所述的方法步骤。
  14. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质内存储有计算机程序，所述计算机程序被处理器执行时实现权利要求1-7任一所述的方法步骤。
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