WO2019134358A1 - 数据传输控制方法、控制系统及存储设备 - Google Patents

数据传输控制方法、控制系统及存储设备 Download PDF

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Publication number
WO2019134358A1
WO2019134358A1 PCT/CN2018/095889 CN2018095889W WO2019134358A1 WO 2019134358 A1 WO2019134358 A1 WO 2019134358A1 CN 2018095889 W CN2018095889 W CN 2018095889W WO 2019134358 A1 WO2019134358 A1 WO 2019134358A1
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WIPO (PCT)
Prior art keywords
data
network port
backup
main
primary
Prior art date
Application number
PCT/CN2018/095889
Other languages
English (en)
French (fr)
Inventor
谢明璞
孙兴红
严振航
吴振志
吴涵渠
Original Assignee
深圳市奥拓电子股份有限公司
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Application filed by 深圳市奥拓电子股份有限公司 filed Critical 深圳市奥拓电子股份有限公司
Publication of WO2019134358A1 publication Critical patent/WO2019134358A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/06—Management of faults, events, alarms or notifications
    • H04L41/0654—Management of faults, events, alarms or notifications using network fault recovery
    • H04L41/0663—Performing the actions predefined by failover planning, e.g. switching to standby network elements
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/14—Error detection or correction of the data by redundancy in operation
    • G06F11/1402—Saving, restoring, recovering or retrying
    • G06F11/1446—Point-in-time backing up or restoration of persistent data
    • G06F11/1458—Management of the backup or restore process
    • G06F11/1464—Management of the backup or restore process for networked environments
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0078—Avoidance of errors by organising the transmitted data in a format specifically designed to deal with errors, e.g. location
    • H04L1/0079—Formats for control data
    • H04L1/0082—Formats for control data fields explicitly indicating existence of error in data being transmitted, e.g. so that downstream stations can avoid decoding erroneous packet; relays
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/10—Flow control; Congestion control
    • H04L47/23—Bit dropping
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/50—Queue scheduling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/60—Network streaming of media packets

Definitions

  • the present invention relates to data transmission technologies, and in particular, to a data transmission control method, a control system, and a storage device.
  • the existing backup technology transmits two data streams in the data link of the system, one of which is a primary data stream and the other is a backup data stream.
  • the primary data stream is interrupted, switch to obtaining data from the backup data stream.
  • the above data transmission control method cannot correct the erroneous data that is accidentally generated in the main data stream, and in the handover process, frame dropping phenomenon will inevitably occur.
  • a first aspect of the present invention provides a data transmission control method for controlling data transmission of an electronic device.
  • the electronic device has a primary network port and a backup network port, and includes the following steps:
  • the backup network obtains the backup data.
  • the method further comprises the steps of:
  • the abnormal signal is received, and after receiving the abnormal signal, the data frame is obtained from the backup data and presented.
  • the obtaining the presentation data from the backup data comprises:
  • next frame is switched to obtain a data frame presentation from the main data.
  • the method further comprises the steps of:
  • the data frame of the primary data includes a vertical synchronization packet.
  • the control electronic device acquires the backup data through the backup network port.
  • the method further comprises the steps of:
  • the backup network port If the backup network port does not receive the primary data, the backup network port is set to the new primary network port and the original primary network port is set to the new standby network port.
  • the obtaining backup data by using the backup network port includes:
  • the backup data is obtained from the data source through the standby network port.
  • the standby network port caches the primary data to form a cache queue.
  • the backup data is obtained through the backup network port.
  • the backup data is obtained from the cache queue.
  • a second aspect of the present invention provides a data transmission control system for controlling data transmission of an electronic device, the data transmission control system comprising:
  • the primary network port is used to obtain primary data from the data source.
  • the backup network port is used to obtain backup data.
  • a rendering unit for presenting data frames obtained from primary data or backup data
  • control unit configured to control the presentation unit to obtain data through the primary network port and the backup network port
  • the control unit After the main data is transmitted to the backup network port by the presentation unit, the control unit obtains backup data through the backup network port.
  • the method further includes:
  • the detecting mechanism is configured to acquire an abnormal signal, and send the acquired abnormal signal to the control unit, and after receiving the abnormal signal, the control unit acquires the data frame from the backup data, and is presented by the rendering unit.
  • the method further includes:
  • the switching unit is configured to switch the primary network port to the standby network port and switch the standby network port to the primary network port.
  • a third aspect of the present invention provides a storage device storing a plurality of instructions adapted to be loaded by a processor and to perform the data transmission method of any of the above.
  • the data transmission control method and the data transmission control system obtain the main data through the main network port, obtain the backup data through the backup network port, form a bidirectional cascading system between the main network port, the control unit, and the backup network port, and control the electronic device.
  • the unit obtains the backup data from the backup network port only after the master network port receives the master data. Therefore, the time difference between the master data and the backup data arrives at the control unit is different, so that the packet loss problem when switching to the backup data can be avoided. You can correct sporadic erroneous data in the master data by switching to backup data.
  • FIG. 1 is a flowchart of a data transmission control method according to an embodiment of the present invention.
  • FIG. 2 is a flowchart of a data transmission control method according to still another embodiment of the present invention.
  • FIG. 3 is a flowchart of a data transmission control method according to an embodiment of the present invention.
  • FIG. 4 is a flowchart of a data transmission control method according to an embodiment of the present invention.
  • FIG. 5 is a flowchart of a data transmission control method according to an embodiment of the present invention.
  • FIG. 6 is a structural block diagram of a data transmission control system according to an embodiment of the present invention.
  • FIG. 7 is a structural block diagram of a data transmission control system according to still another embodiment of the present invention.
  • FIG. 8 is a structural block diagram of a data transmission control system according to still another embodiment of the present invention.
  • the present invention provides a data transmission control method for controlling data transmission of an electronic device, which may be a mobile phone terminal such as an LED display screen, a liquid crystal display, a ground station, a radio, a voice recorder, a mobile phone, a PAD, etc.
  • the data can be video data, audio data, or audio and video mixed data.
  • the data transmission control method may be described below as a video data transmission control method of the LED display screen, this should not be construed as limiting, but to facilitate the formulation of an exemplary expression given by the technical solution.
  • the electronic device has a primary network port and a backup network port, and is connected to a data source end through a primary network port and a backup network port.
  • the electronic device can obtain data from the data source end through the primary network port and the backup network port, and is electronically
  • the device presents, for example, the data source end may be a video sending card.
  • the LED display screen obtains video data from the video sending card through the main network port and the backup network port, and will be from the main network port.
  • the acquired video data or the video data obtained by the backup network port is displayed on the LED display.
  • an embodiment of the present invention provides a data transmission control method, including the following steps:
  • S120 Send the obtained main data to the electronic device for presentation, and the main data is returned to the data source end through the backup network port after being presented;
  • the LED display can be connected to the video transmission card through the main network port and the backup network port, thereby realizing the transmission of video data.
  • the control unit of the LED display screen obtains the main video data from the video transmission card through the main network port, and displays it on each box module of the LED display screen, and finally returns to the video transmission card through the backup network port.
  • the control unit After receiving the main data on the backup network port, the control unit obtains the backup video data from the backup network port, and transmits it to each box module of the LED display screen, and then returns it to the video transmission card through the main network port, at the main network port.
  • a bidirectional cascading system is formed between the control unit and the backup network port.
  • the control unit processes the main video data according to the position and resolution information of each box module, and forms display data equal to the number of the module modules, and Each piece of display data is given an identification information, so that the box module identifies the display data corresponding to itself by the identification information.
  • the box module captures a display data and displays it by the identification information, and the display screens of the plurality of box modules together form a complete display image.
  • the control unit obtains the video frame from the main video data as the presentation data, and displays on the LED display screen.
  • the main video data has an abnormal situation such as packet loss or wrong packet
  • the control unit acquires the video frame from the backup data as a presentation.
  • the data is displayed on the LED display screen. Since the control unit obtains the backup video data from the backup network port after receiving the main video data, the backup video data arrives at the control unit later than the main video data. Therefore, the control unit has time to switch the backup data after receiving the abnormal signal, and the time difference between the main video data and the backup video data reaching the control unit provides a buffering time for the switching of the data channel, so that after the control unit switches to the backup video data, No frame loss occurs.
  • the data frame of the primary data includes a vertical synchronization packet.
  • the control electronic device acquires the backup data through the backup network port.
  • the video frame of the main video data includes a video vertical synchronization packet and a plurality of data packets, wherein the data packet is transmitted to the control unit for processing, and is distributed to each box module for display, and the video vertical synchronization packet is directly transmitted to the control unit.
  • the control unit After receiving the video vertical synchronization packet, the control unit obtains backup video data through the backup network port.
  • the obtaining backup data by using the backup network port includes:
  • the backup data is obtained from the data source through the standby network port.
  • the backup unit can obtain backup video data from the backup network port through the backup network port, or obtain backup video data from the backup network port to the video transmission card. If the backup video data needs to be obtained directly from the backup network port, the backup network port is configured to have a buffer for buffering the backup video data, and the locked cache data cannot be read, when the video vertical synchronization packet of the main video data arrives. Or, when the backup network port switches to the switch command of the primary network port, the cached backup video data is unlocked and allowed to be read by the control unit.
  • the standby network port caches the primary data to form a cache queue.
  • the backup network port caches the main video data in the buffer and forms a buffer queue.
  • the main video data buffered in the cache queue is used as backup video data and is read by the control unit.
  • the cached data can also be obtained directly from the data source.
  • the data transmission control method further includes the steps of:
  • S140 Receive an abnormal signal, and after receiving the abnormal signal, acquire a data frame from the backup data and present it.
  • the abnormal signal may be implemented by a detecting mechanism of the control unit or manually.
  • the control unit provides an abnormal signal to the control unit, and after receiving the abnormal signal, the control unit switches to acquire the data frame from the backup video data as the presented data frame, and presents the data frame.
  • the detecting mechanism can also be connected with a control switch, and when the control switch is pressed or touched, the detecting mechanism actively sends an abnormal signal to the control unit, thereby realizing manual switching of the main video data channel to the backup video data channel.
  • the erroneous data is switched to obtain video frames from the backup video data for display before the erroneous data arrives at the display screen, because the main video data and the backup video data arrive at the control unit. There is a difference in the time to avoid displaying erroneous data on the display.
  • the control unit after receiving the abnormal signal, acquires the video frame from the backup video data, and after processing the video frame, controls all the box modules of the LED display screen to acquire new display data for display.
  • the abnormal signal when the detecting mechanism transmits the abnormal signal to the control unit, includes the position information of the box module, so that after switching to obtain the video frame from the backup video data, and performing processing, the control display is abnormal.
  • the box module receives the new display data, while the other box modules maintain the display data received from the main video data.
  • the obtaining a data frame from the backup data and presenting includes:
  • S143 Determine whether the currently presented data frame is equivalent to the abnormal data frame in the main data.
  • the control unit After receiving the abnormal signal, the control unit switches to obtain the video frame from the backup video data, and then distributes the processing to each box module for display.
  • the control unit compares the currently processed video frame with the abnormal video frame acquired from the main video before the handover, and determines whether the two are the same. If the same, the next frame is switched to the main video data.
  • the video frame serves as the displayed video frame. This avoids the problem of always using the backup video data as the display data.
  • the method further includes the steps of:
  • S150 Set the standby network port as the new primary network port according to the sending frequency of the abnormal signal, and set the original primary network port as the new standby network port.
  • the primary network port and the backup network port are switched.
  • the original network port is used as the new primary network port, and the original primary network port is used as the new device.
  • the network port because the time when the video data of the original primary network port and the original standby network port reaches the display screen has a time difference, there is no packet loss problem. It can be understood by those skilled in the art that after the switching between the primary network port and the backup network port, the control unit will suspend the backup video data from the new standby network port until the first frame video data acquired by the new primary network port arrives. New backup network port.
  • the switchover is performed in time.
  • the time difference between the video data of the original primary network port and the original backup network port reaches the display screen is different.
  • the display interface can be successfully carried out.
  • the primary network port is also configured with a buffer, so that the primary network port is used as a backup network port when the primary network port and the backup network port are switched.
  • the method further includes the steps of:
  • the backup network port does not receive the vertical synchronization packet of the next video frame within the preset time after receiving the vertical synchronization packet of the previous video frame, it determines that the main video data is faulty, and performs the operation of the primary network port and the backup network port.
  • the switching rules are the same as those of the primary network port and the standby network port.
  • the data transmission control method obtains the main data through the main network port, and obtains the backup data through the backup network port, and forms a bidirectional cascading system between the main network port, the control unit, and the backup network port, and the control unit of the electronic device is only in the standby network.
  • the port After receiving the master data, the port obtains the backup data from the backup network port. Therefore, the time difference between the time when the master data and the backup data arrive at the control unit is different, so that the packet loss problem when switching to the backup data can be avoided, and the backup can be switched to the backup.
  • the data corrects the erroneous data that is sporadic in the main data.
  • an embodiment of the present invention further provides a data transmission control system for controlling data transmission of an electronic device, where the data transmission control system includes:
  • the primary network port 110 is configured to obtain primary data from a data source end.
  • the backup network port 120 is configured to obtain backup data.
  • a presentation unit 130 configured to present a data frame obtained from the primary data or the backup data
  • the control unit 140 is configured to control the presentation unit 130 to acquire data through the primary network port 110 and the backup network port 120.
  • the control unit 140 obtains backup data through the backup network port 120.
  • the LED display screen can be connected to the video transmission card through the main network port 110 and the backup network port 120, thereby realizing the transmission of video data.
  • the control unit 140 of the LED display screen obtains the main video data from the video transmission card through the main network port 110, and displays it on each box module of the LED display screen, and finally passes back to the backup network port 120 to After receiving the main data, the control unit 140 obtains the backup video data from the backup network port 120, and transmits it to each box module of the LED display screen, and then returns the video to the video through the main network port 110.
  • the sending card forms a bidirectional cascading system between the main network port 110, the control unit 140, and the backup network port 120.
  • the control unit 140 processes the main video data according to the position and resolution information of each box module, and forms display data equal to the number of the module modules. And each piece of display data is given an identification information, so that the box module identifies the display data corresponding to itself by the identification information.
  • the box module captures a display data and displays it by the identification information, and the display screens of the plurality of box modules together form a complete display image.
  • the control unit 140 obtains a video frame from the main video data as the presentation data, and displays on the LED display screen.
  • the main video data has an abnormal situation such as packet loss or a wrong packet
  • the control unit 140 acquires the video frame from the backup data.
  • As the presentation data it is displayed on the LED display screen.
  • the backup network data is returned to the control unit 140.
  • the control unit 140 has time to switch the backup data after receiving the abnormal signal, and the time difference between the main video data and the backup video data reaching the control unit 140 provides a buffering time for the switching of the data channel, so that the control unit After switching to the backup video data, 140 does not cause frame dropping.
  • the data frame of the primary data includes a vertical synchronization packet.
  • the control electronic device acquires backup data through the backup network port.
  • the video frame of the main video data includes a video vertical synchronization packet and a plurality of data packets, wherein the data packet is transmitted to the control unit 140 for processing, and is distributed to each box module for display, and the video vertical synchronization packet is controlled by the control unit.
  • the 140 is directly transmitted to the backup network port 120.
  • the control network unit 140 After receiving the video vertical synchronization packet, the control network unit 140 obtains backup video data through the backup network port 120.
  • the control unit 140 obtains the backup video data from the backup network port 120 through the backup network port 120, or obtains the backup video data from the backup network port 120 to the video transmission card. If the backup video data needs to be obtained directly from the backup network port 120, the backup network port 120 is configured to have a buffer for buffering backup video data, and locking the cache data cannot be read, when the video vertical synchronization packet of the main video data Upon arrival, or when the switching instruction of the backup network port switching to the primary network port 110 arrives, the cached backup video data is unlocked and allowed to be read by the control unit 140.
  • the backup network port 120 caches the primary data to form a cache queue.
  • the backup network port 120 caches the main video data in the buffer and forms a buffer queue.
  • the vertical synchronization packet of the next video frame reaches the backup network port 120
  • the main video data buffered in the cache queue is used as backup video data, it is read by the control unit 140.
  • the cached data can also be obtained directly from the data source.
  • the method further includes:
  • the detecting mechanism 150 is configured to acquire an abnormality signal, and send the acquired abnormality signal to the control unit 140. After receiving the abnormality signal, the control unit 140 acquires a data frame from the backup data, and is presented by the rendering unit 130.
  • the abnormal signal may be implemented by a detecting mechanism 150 of the control unit 140 or may be manually triggered.
  • the detecting mechanism 150 detects that the LED display screen has display abnormality information, it provides an abnormal signal to the control unit 140, and after receiving the abnormal signal, the control unit 140 switches to acquire the rendering data from the backup video data.
  • the detecting mechanism 150 can also be connected to a control switch, and when the control switch is pressed or touched, the detecting mechanism 150 actively sends an abnormal signal to the control unit 140, thereby realizing manual switching of the main video number to the backup video data.
  • the erroneous data is switched to display the display data from the backup video data for display, because the main video data and the backup video data arrive at the control unit. There is a difference in the time of 140 to avoid displaying erroneous data on the display.
  • the control unit 140 after receiving the abnormal signal, obtains a video frame from the backup video data, and after dividing the video frame, controls all the box modules of the LED display to obtain new display data for display. .
  • the abnormal signal when the detecting mechanism 150 transmits the abnormal signal to the control unit 140, the abnormal signal includes the position information of the box module, so that after switching to obtain the video frame from the backup video data, and performing the dividing process, the box module that controls the display abnormality receives new display data, while the other box modules maintain the display data received from the main video data.
  • the control unit 140 switches to acquire the video frame from the backup video data, performs processing, and distributes it to each of the box modules for display.
  • the control unit 140 compares the currently processed video frame with the abnormal video frame acquired from the main video before the handover, and determines whether the two are the same. If the same, the next frame is switched into the main video data. Get the video frame as the displayed video frame. This avoids the problem of always using the backup video data as the display data.
  • the control unit 140 obtains the backup video data from the backup network port 120 through the backup network port 120, or obtains the backup video data from the backup network port 120 to the video transmission card. If the backup video data needs to be obtained directly from the backup network port 120, the backup network port 120 is configured to have a buffer for buffering backup video data, and after buffering, lock the buffer when the video vertical synchronization packet of the main video data arrives. When the switching instruction of the backup network port switching to the primary network port 110 arrives, the cached backup video data is unlocked and allowed to be read by the control unit 140.
  • the primary network port 110 is also provided with a buffer, so that the primary network port 110 is used as the backup network port 120 when the primary network port 110 and the backup network port 120 are switched.
  • the backup network port 120 caches the primary data to form a cache queue.
  • the backup network port 120 caches the main video data in the buffer and forms a buffer queue.
  • the vertical synchronization packet of the next video frame reaches the backup network port 120
  • the main video data buffered in the cache queue is used as backup video data, it is read by the control unit 140.
  • the method further includes:
  • the switching unit 160 is configured to switch the primary network port 110 to the standby network port 120 and switch the backup network port 120 to the primary network port 110.
  • the primary network port 110 and the backup network port 120 are switched, that is, the original backup network port 120 is used as the new primary network port 110, and the original primary network As the new backup network port 120, the time difference between the video data of the original primary network port 110 and the original standby network port 120 reaching the display screen is different, so no packet loss problem occurs.
  • the control unit 140 will suspend the backup video data from the new standby network port 120 until the new primary network port 110 acquires the first. One frame of video data reaches the new standby network port 120.
  • the switch can be performed in time when the main network port 110 and the original backup network port 120 reach the display screen.
  • the time difference, and the current display interface can be successfully carried out.
  • the backup network port 120 if the backup network port 120 does not receive the vertical synchronization packet of the next video frame within the preset time after receiving the vertical synchronization packet of the previous video frame, it determines that the main video data is received and fails.
  • the switching rules of the network port 110 and the backup network port 120 are the same as those of the primary network port 110 and the backup network port 120.
  • the data transmission control system acquires the main data through the main network port 110, obtains the backup data through the backup network port 120, and forms a bidirectional cascading system between the main network port 110, the control unit 140, and the backup network port 120, and controls the electronic device.
  • the unit 140 obtains the backup data from the backup network port 120 only after the backup network port 120 receives the primary data. Therefore, the time difference between the primary data and the backup data reaching the control unit 140 is time difference, thereby avoiding loss when switching to the backup data.
  • the package problem can also correct the erroneous data in the main data by switching to the backup data.
  • the present invention also provides a storage device storing a plurality of instructions adapted to be loaded by a processor and to perform the data transmission method of any of the above.

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Abstract

本发明涉及一种数据传输控制方法、控制系统及存储设备。所述数据传输控制方法，用于控制电子设备的数据传输，电子设备具有主网口及备网口，包括以下步骤：通过所述主网口从数据源端获取主数据；将获取的主数据发送至电子设备进行呈现，主数据在呈现后经所述备网口流回数据源端；当备网口接收到主数据时，通过所述备网口获取备份数据。上述数据传输控制方法、控制系统可以避免在切换至备份数据时的丢包问题，同时可以通过切换为备份数据纠正主数据中偶发的错误数据。

Description

数据传输控制方法、控制系统及存储设备 技术领域
本发明涉及数据传输技术，特别是涉及一种数据传输控制方法、控制系统及存储设备。
 背景技术
现有备份技术，在系统的数据链路中传输两路数据流，其中一个为主数据流，另一个为备份数据流。当主数据流中断后，切换至从备份数据流获取数据。然而上述数据传输控制方法不能纠正主数据流中偶发的错误数据，在切换过程中，也不可避免的会出现丢帧现象。
 技术问题
基于此，有必要针对现有的数据传输控制方法在切换过程中的丢帧问题，提供一种数据传输控制方法、控制系统及存储设备。
 技术解决方案
本发明第一方面提供一种数据传输控制方法，用于控制电子设备的数据传输，电子设备具有主网口及备网口，包括以下步骤：
通过所述主网口从数据源端获取主数据；
将获取的主数据发送至电子设备进行呈现，主数据在呈现后经所述备网口流回数据源端；
当备网口接收到主数据时，通过所述备网口获取备份数据。
在其中一个实施例中，还包括步骤：
接收异常信号，并在接收到异常信号后，从备份数据中获取数据帧并呈现。
在其中一个实施例中，所述从备份数据中获取呈现数据包括：
从备份数据中获取数据帧；
判定当前呈现的数据帧是否等同于主数据中的异常数据帧；
若是，则下一帧切换为从主数据中获取数据帧呈现。
在其中一个实施例中，还包括步骤：
根据异常信号的发送频率，将备网口设置为新的主网口，原主网口设置为新的备网口。
在其中一个实施例中，所述主数据的数据帧包括一垂直同步包，当备网口接收到主数据的垂直同步包后，控制电子设备通过备网口获取备份数据。
在其中一个实施例中，还包括步骤：
备网口获取主数据后预设时间内，若备网口未收到主数据，将备网口设置为新的主网口，原主网口设置为新的备网口；
从新的主网口获取主数据。
在其中一个实施例中，所述通过所述备网口获取备份数据包括：
从所述备网口获取备份数据；或
通过所述备网口从数据源端获取备份数据。
在其中一个实施例中，当主数据流经所述备网口时，所述备网口缓存主数据，形成缓存队列；
通过备网口获取备份数据时，从所述缓存队列获取备份数据。
本发明第二方面提供一种数据传输控制系统，用于控制电子设备的数据传输，所述数据传输控制系统包括：
主网口，用于从数据源端获取主数据；
备网口，用于获取备份数据；
呈现单元，用于呈现从主数据或备份数据中获取的数据帧；及
控制单元，用于控制呈现单元通过主网口及备网口获取数据；
当主数据经呈现单元传至备网口后，所述控制单元通过所述备网口获取备份数据。
在其中一个实施例中，还包括：
检测机构，用于获取异常信号，并将获取到的异常信号发送至控制单元，控制单元在接收到异常信号后，从备份数据中获取数据帧，并被所述呈现单元呈现。
在其中一个实施例中，还包括：
切换单元，用于将主网口切换为备网口及将备网口切换为主网口。
本发明第三方面提供一种存储设备，所述存储设备储存多条指令，所述指令适于由处理器加载并执行上述任一项所述的数据传输方法。
 有益效果
上述数据传输控制方法及数据传输控制系统，通过主网口获取主数据，通过备网口获取备份数据，在主网口、控制单元、备网口之间形成双向级联系统，电子设备的控制单元只有在备网口接收到主数据后，才从备网口获取备份数据，故而主数据与备份数据到达控制单元的时间存在时间差，从而可以避免在切换至备份数据时的丢包问题，同时可以通过切换为备份数据纠正主数据中偶发的错误数据。
 附图说明
图1为本发明一实施例的数据传输控制方法的流程图；
图2为本发明又一实施例的数据传输控制方法的流程图；
图3为本发明一实施例的数据传输控制方法的流程图；
图4为本发明一实施例的数据传输控制方法的流程图；
图5为本发明一实施例的数据传输控制方法的流程图；
图6为本发明一实施例的数据传输控制系统的结构框图；
图7为本发明又一实施例的数据传输控制系统的结构框图；
图8为本发明又一实施例的数据传输控制系统的结构框图。
 本发明的实施方式
为了便于理解本发明，下面将参照相关附图对本发明进行更全面的描述。附图中给出了本发明的较佳实施方式。但是，本发明可以以许多不同的形式来实现，并不限于本文所描述的实施方式。相反地，提供这些实施方式的目的是使对本发明的公开内容理解的更加透彻全面。
需要说明的是，当元件被称为“固定于”另一个元件，它可以直接在另一个元件上或者也可以存在居中的元件。当一个元件被认为是“连接”另一个元件，它可以是直接连接到另一个元件或者可能同时存在居中元件。本文所使用的术语“垂直的”、“水平的”、“左”、“右”以及类似的表述只是为了说明的目的，并不表示是唯一的实施方式。
除非另有定义，本文所使用的所有的技术和科学术语与属于本发明的技术领域的技术人员通常理解的含义相同。本文中在本发明的说明书中所使用的术语只是为了描述具体的实施方式的目的，不是旨在于限制本发明。本文所使用的术语“及／或”包括一个或多个相关的所列项目的任意的和所有的组合。
本发明提供一种数据传输控制方法，用于控制电子设备的数据传输，所述电子设备可以是LED显示屏、液晶显示屏、地面站、收音机、录音笔及手机、PAD等移动终端，传输的数据可以是视频数据，也可以是音频数据，还可以是音视频混合数据。尽管在下文中，数据传输控制方法可能被描述为LED显示屏的视频数据传输控制方法，但是这不应理解为限制性的，而是为了便于阐述技术方案给出的示例性表述。
所述电子设备具有主网口及备网口，并通过主网口及备网口连接于一数据源端，电子设备可以通过主网口及备网口从数据源端获取数据，并被电子设备所呈现，示例性的，数据源端可以是视频发送卡，电子设备为LED显示屏时，LED显示屏通过主网口及备网口从视频发送卡获取视频数据，并将从主网口获取的视频数据或备网口获取的视频数据显示在LED显示屏上。
请参阅图1，本发明一实施例提供一种数据传输控制方法，包括以下步骤：
S110：通过所述主网口从数据源端获取主数据；
S120：将获取的主数据发送至电子设备进行呈现，主数据在呈现后经所述备网口流回数据源端；
S130：当备网口接收到主数据时，通过所述备网口获取备份数据；
以LED显示屏的视频数据传输为例，LED显示屏可以通过主网口及备网口与视频发送卡连接，进而可以实现视频数据的传输。在通常情况下，LED显示屏的控制单元通过主网口从视频发送卡获取主视频数据，并在LED显示屏的各个箱体模组上显示出来，最后经过备网口回传到视频发送卡，在备网口接收到主数据后，控制单元从备网口获取备份视频数据，传输至LED显示屏的各个箱体模组后，经主网口回传至视频发送卡，在主网口、控制单元、备网口之间形成双向级联系统。
具体的，控制单元从主网口获取主视频数据后，根据各个箱体模组的位置以及分辨率信息，对主视频数据进行处理，形成与箱体模组数量相等份数的显示数据，并给每份显示数据赋予一标识信息，以便于箱体模组通过标识信息识别自身所对应的显示数据。箱体模组通过标识信息捕获一显示数据并予以显示，若干个箱体模组的显示画面共同组成完整的显示图像。
通常情况下，控制单元从主视频数据中获取视频帧作为呈现数据，在LED显示屏上显示，当主视频数据发生丢包、错包等异常情况时，控制单元从备份数据中获取视频帧作为呈现数据，在LED显示屏上显示，由于控制单元是在备网口接收到主视频数据后，才从备网口获取备份视频数据，故而备份视频数据的到达控制单元的时间晚于主视频数据，从而控制单元在接收到异常信号后有时间进行备份数据的切换，主视频数据与备份视频数据到达控制单元的时间差为数据通道的切换提供了缓冲时间，使得控制单元在切换至备份视频数据后，不会产生丢帧现象。
所述主数据的数据帧包括一垂直同步包，当备网口接收到主数据的垂直同步包后，控制电子设备通过备网口获取备份数据。
主视频数据的视频帧包括一视频垂直同步包及若干数据包，其中数据包被传输至控制单元进行处理，并分配至各个箱体模组进行显示，视频垂直同步包经控制单元后直接传输至备网口，备网口在接收到视频垂直同步包后，控制单元通过备网口获取备份视频数据。
在一些实施例中，所述通过所述备网口获取备份数据包括：
从所述备网口获取备份数据；或
通过所述备网口从数据源端获取备份数据。
控制单元通过备网口获取备份视频数据可以是直接从备网口获取备份视频数据，也可以是通过备网口向视频发送卡获取备份视频数据。若需要直接从备网口获取备份视频数据，则备网口被配置为具有一缓存器，用以缓存备份视频数据，并锁定缓存数据不可被读取，当主视频数据的视频垂直同步包到达时，或者备份网口切换为主网口的切换指令到达时，解锁缓存的备份视频数据，并允许控制单元读取。
在一具体的实施方式中，当主数据流经所述备网口时，所述备网口缓存主数据，形成缓存队列；
通过备网口获取备份数据时，从所述缓存队列获取数据作为备份数据。
主视频数据的视频垂直同步包及数据包达到备网口时，备网口将主视频数据缓存在缓存器中，并形成缓存队列，当下一视频帧的垂直同步包到达备网口时，将缓存队列中缓存的主视频数据作为备份视频数据，被控制单元读取。
在其他的实施方式中，缓存数据也可以直接从数据源端获取。
请继续参阅图2，在一些实施例中，所述数据传输控制方法还包括步骤：
S140：接收异常信号，并在接收到异常信号后，从备份数据中获取数据帧并呈现。
所述异常信号可以是由控制单元的一个检测机构实现，也可以是由人工触发。当检测机构检测到LED显示屏存在显示异常信息时，向控制单元提供一个异常信号，控制单元在接收到该异常信号后，切换为从备份视频数据获取数据帧作为呈现的数据帧，并进行呈现。该检测机构还可以与一控制开关连接，并在控制开关被按压或触动时，检测机构主动向控制单元发送异常信号，从而实现人工控制主视频数据通道向备份视频数据通道的切换。示例性的，当主视频数据中存在偶发的错误数据时，通过人工的纠正，在错误数据到达显示屏前切换为从备份视频数据获取视频帧进行显示，由于主视频数据与备份视频数据到达控制单元的时间存在一差值，从而可以避免在显示屏上显示错误数据。
在一些实施例中，控制单元接收到异常信号后，从备份视频数据中获取视频帧，并将视频帧进行处理后，控制LED显示屏的所有箱体模组获取新的显示数据进行显示。在另一些实施例中，检测机构在向控制单元传送异常信号时，异常信号内包括箱体模组的位置信息，从而在切换为从备份视频数据获取视频帧，并进行处理后，控制显示异常的箱体模组接收新的显示数据，而其他的箱体模组维持显示从主视频数据接收的显示数据。
请继续参阅图3，在一些实施例中，所述从备份数据中获取数据帧并呈现包括：
S141：从备份数据中获取数据帧，并在处理后呈现；
S143：判定当前呈现的数据帧是否等同于主数据中的异常数据帧；
S145：若是，则下一帧切换为从主数据中获取数据帧呈现。
控制单元在接收到异常信号后，切换为从备份视频数据中获取视频帧，进行处理后分配到各个箱体模组进行显示。控制单元在对视频帧处理时，将当前处理的视频帧与切换前从主视频获取的异常视频帧进行比对，判断二者是否相同，若相同，则下一帧切换为主视频数据中获取视频帧作为显示的视频帧。这样可以避免一直使用备份视频数据作为显示数据时不能再进行纠错的问题。
请继续参阅图4，在一些实施例中，还包括步骤：
S150：根据异常信号的发送频率，将备网口设置为新的主网口，原主网口设置为新的备网口。
若在预设的时间内，主视频数据的异常次数超过预设值，则将主网口、备网口进行切换，即将原备网口作为新的主网口，原主网口作为新的备网口，由于原主网口、原备网口的视频数据到达显示屏的时间存在时间差，故不会产生丢包问题。本领域技术人员可以理解的是，在进行主网口、备网口的切换后，控制单元将暂停从新的备网口获取备份视频数据，直至新的主网口获取的第一帧视频数据到达新的备网口。
通过主网口、备网口的切换，可以在主视频数据中存在过多错误时，及时进行切换，同时由于原主网口、原备网口的视频数据到达显示屏的时间存在时间差，与当前的显示界面可以做到顺利承接。
本领域技术人员可以理解的是，所述主网口也设置有缓存器，以便于主网口、备网口之间的切换时，主网口作为备网口使用。
请继续参阅图5，在一些实施例中，还包括步骤：
S160：备网口获取主数据预设时间后，若备网口未收到主数据，将备网口设置为新的主网口，原主网口设置为新的备网口；
从新的主网口获取主数据。
若备网口在接收到上一视频帧的垂直同步包后，预设时间内没有接收到下一视频帧的垂直同步包，则判定主视频数据接收故障，进行主网口、备网口的切换，具体的切换规则与前文所述的主网口、备网口的切换规则相同。
上述数据传输控制方法，通过主网口获取主数据，通过备网口获取备份数据，在主网口、控制单元、备网口之间形成双向级联系统，电子设备的控制单元只有在备网口接收到主数据后，才从备网口获取备份数据，故而主数据与备份数据到达控制单元的时间存在时间差，从而可以避免在切换至备份数据时的丢包问题，同时可以通过切换为备份数据纠正主数据中偶发的错误数据。
请继参阅图6，本发明一实施例还提供一种数据传输控制系统，用于控制电子设备的数据传输，所述数据传输控制系统包括：
主网口110，用于从数据源端获取主数据；
备网口120，用于获取备份数据；
呈现单元130，用于呈现从主数据或备份数据中获取的数据帧；及
控制单元140，用于控制呈现单元130通过主网口110及备网口120获取数据；
当主数据经呈现单元130传至备网口120后，所述控制单元140通过所述备网口120获取备份数据。
以LED显示屏的视频数据传输为例，LED显示屏可以通过主网口110及备网口120与视频发送卡连接，进而可以实现视频数据的传输。在通常情况下，LED显示屏的控制单元140通过主网口110从视频发送卡获取主视频数据，并在LED显示屏的各个箱体模组上显示出来，最后经过备网口120回传到视频发送卡，在备网口120接收到主数据后，控制单元140从备网口120获取备份视频数据，传输至LED显示屏的各个箱体模组后，经主网口110回传至视频发送卡，在主网口110、控制单元140、备网口120之间形成双向级联系统。
具体的，控制单元140从主网口110获取主视频数据后，根据各个箱体模组的位置以及分辨率信息，对主视频数据进行处理，形成与箱体模组数量相等份数的显示数据，并给每份显示数据赋予一标识信息，以便于箱体模组通过标识信息识别自身所对应的显示数据。箱体模组通过标识信息捕获一显示数据并予以显示，若干个箱体模组的显示画面共同组成完整的显示图像。
通常情况下，控制单元140从主视频数据中获取视频帧作为呈现数据，在LED显示屏上显示，当主视频数据发生丢包、错包等异常情况时，控制单元140从备份数据中获取视频帧作为呈现数据，在LED显示屏上显示，由于控制单元140是在备网口120接收到主视频数据后，才从备网口120获取备份视频数据，故而备份视频数据的到达控制单元140的时间晚于主视频数据，从而控制单元140在接收到异常信号后有时间进行备份数据的切换，主视频数据与备份视频数据到达控制单元140的时间差为数据通道的切换提供了缓冲时间，使得控制单元140在切换至备份视频数据后，不会产生丢帧现象。
所述主数据的数据帧包括一垂直同步包，当备网口120接收到主数据的垂直同步包后，控制电子设备通过备网口获取备份数据。
具体的，主视频数据的视频帧包括一视频垂直同步包及若干数据包，其中数据包被传输至控制单元140进行处理，并分配至各个箱体模组进行显示，视频垂直同步包经控制单元140后直接传输至备网口120，备网口120在接收到视频垂直同步包后，控制单元140通过备网口120获取备份视频数据。
控制单元140通过备网口120获取备份视频数据可以是直接从备网口120获取备份视频数据，也可以是通过备网口120向视频发送卡获取备份视频数据。若需要直接从备网口120获取备份视频数据，则备网口120被配置为具有一缓存器，用以缓存备份视频数据，并锁定缓存数据不可被读取，当主视频数据的视频垂直同步包到达时，或者备份网口切换为主网口110的切换指令到达时，解锁缓存的备份视频数据，并允许控制单元140读取。
在一具体的实施方式中，当主数据流经所述备网口120时，所述备网口120缓存主数据，形成缓存队列；
通过备网口120获取备份数据时，从所述缓存队列获取数据作为备份数据。
主视频数据的视频垂直同步包及数据包达到备网口120时，备网口120将主视频数据缓存在缓存器中，并形成缓存队列，当下一视频帧的垂直同步包到达备网口120时，将缓存队列中缓存的主视频数据作为备份视频数据，被控制单元140读取。
在其他的实施方式中，缓存数据也可以直接从数据源端获取。
请继续参阅图7，在其中一个实施例中，还包括：
检测机构150，用于获取异常信号，并将获取到的异常信号发送至控制单元140，控制单元140在接收到异常信号后，从备份数据中获取数据帧，并被所述呈现单元130呈现。
所述异常信号可以是由控制单元140的一个检测机构150实现，也可以是由人工触发。当检测机构150检测到LED显示屏存在显示异常信息时，向控制单元140提供一个异常信号，控制单元140在接收到该异常信号后，切换为从备份视频数据获取呈现数据。该检测机构150还可以与一控制开关连接，并在控制开关被按压或触动时，检测机构150主动向控制单元140发送异常信号，从而实现人工控制主视频数向备份视频数据的切换。示例性的，当主视频数据中存在偶发的错误数据时，通过人工的纠正，在错误数据到达被显示前切换为从备份视频数据获取显示数据进行显示，由于主视频数据与备份视频数据到达控制单元140的时间存在一差值，从而可以避免在显示屏上显示错误数据。
在一些实施例中，控制单元140接收到异常信号后，从备份视频数据中获取视频帧，并将视频帧进行分割处理后，控制LED显示屏的所有箱体模组获取新的显示数据进行显示。在另一些实施例中，检测机构150在向控制单元140传送异常信号时，异常信号内包括箱体模组的位置信息，从而在切换为从备份视频数据获取视频帧，并进行分割处理后，控制显示异常的箱体模组接收新的显示数据，而其他的箱体模组维持显示从主视频数据接收的显示数据。
控制单元140在接收到异常信号后，切换为从备份视频数据中获取视频帧，进行处理后分配到各个箱体模组进行显示。控制单元140在对视频帧处理时，将当前处理的视频帧与切换前从主视频获取的异常视频帧进行比对，判断二者是否相同，若相同，则下一帧切换为主视频数据中获取视频帧作为显示的视频帧。这样可以避免一直使用备份视频数据作为显示数据时不能再进行纠错的问题。
控制单元140通过备网口120获取备份视频数据可以是直接从备网口120获取备份视频数据，也可以是通过备网口120向视频发送卡获取备份视频数据。若需要直接从备网口120获取备份视频数据，则备网口120被配置为具有一缓存器，用以缓存备份视频数据，缓存后，锁定缓存器，当主视频数据的视频垂直同步包到达时，或者备份网口切换为主网口110的切换指令到达时，解锁缓存的备份视频数据，并允许控制单元140读取。
本领域技术人员可以理解的是，所述主网口110也设置有缓存器，以便于主网口110、备网口120之间的切换时，主网口110作为备网口120使用。
在一具体的实施方式中，当主数据流经所述备网口120时，所述备网口120缓存主数据，形成缓存队列；
通过备网口120获取备份数据时，从所述缓存队列获取数据作为备份数据。
主视频数据的视频垂直同步包及数据包达到备网口120时，备网口120将主视频数据缓存在缓存器中，并形成缓存队列，当下一视频帧的垂直同步包到达备网口120时，将缓存队列中缓存的主视频数据作为备份视频数据，被控制单元140读取。
请继续参阅图8，在其中一个实施例中，还包括：
切换单元160，用于将主网口110切换为备网口120及将备网口120切换为主网口110。
若在预设的时间内，主视频数据的异常此处超过预设值，则将主网口110、备网口120进行切换，即将原备网口120作为新的主网口110，原主网口110作为新的备网口120，由于原主网口110、原备网口120的视频数据到达显示屏的时间存在时间差，故不会产生丢包问题。本领域技术人员可以理解的是，在进行主网口110、备网口120的切换后，控制单元140将暂停从新的备网口120获取备份视频数据，直至新的主网口110获取的第一帧视频数据达到新的备网口120。
通过主网口110、备网口120的切换，可以在主视频数据中存在过多错误时，及时进行切换，同时由于原主网口110、原备网口120的视频数据到达显示屏的时间存在时间差，与当前的显示界面可以做到顺利承接。
在一些实施例中，若备网口120在接收到上一视频帧的垂直同步包后，预设时间内没有接收到下一视频帧的垂直同步包，则判定主视频数据接收故障，进行主网口110、备网口120的切换，具体的切换规则与前文所述的主网口110、备网口120的切换规则相同。
上述数据传输控制系统，通过主网口110获取主数据，通过备网口120获取备份数据，在主网口110、控制单元140、备网口120之间形成双向级联系统，电子设备的控制单元140只有在备网口120接收到主数据后，才从备网口120获取备份数据，故而主数据与备份数据到达控制单元140的时间存在时间差，从而可以避免在切换至备份数据时的丢包问题，同时可以通过切换为备份数据纠正主数据中偶发的错误数据。
本发明还提供一种存储设备，所述存储设备储存多条指令，所述指令适于由处理器加载并执行上述任一项所述的数据传输方法。
以上所述实施例的各技术特征可以进行任意的组合，为使描述简洁，未对上述实施例中的各个技术特征所有可能的组合都进行描述，然而，只要这些技术特征的组合不存在矛盾，都应当认为是本说明书记载的范围。
以上所述实施例仅表达了本发明的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对发明专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本发明构思的前提下，还可以做出若干变形和改进，这些都属于本发明的保护范围。因此，本发明专利的保护范围应以所附权利要求为准。

Claims (10)

  1. 一种数据传输控制方法，用于控制电子设备的数据传输，电子设备具有主网口及备网口，其特征在于，包括以下步骤：
    通过所述主网口从数据源端获取主数据；
    将获取的主数据发送至电子设备进行呈现，主数据在呈现后经所述备网口流回数据源端；
    当备网口接收到主数据时，通过所述备网口获取备份数据。
  2. 根据权利要求1所述的数据传输控制方法，其特征在于，还包括步骤：
    接收异常信号，并在接收到异常信号后，从备份数据中获取数据帧并呈现。
  3. 根据权利要求2所述的数据传输控制方法，其特征在于，所述从备份数据中获取呈现数据包括：
    从备份数据中获取数据帧；
    判定当前呈现的数据帧是否等同于主数据中的异常数据帧；
    若是，则下一帧切换为从主数据中获取数据帧呈现。
  4. 根据权利要求2或3所述的数据传输控制方法，其特征在于，还包括步骤：
    根据异常信号的发送频率，将备网口设置为新的主网口，原主网口设置为新的备网口。
  5. 根据权利要求1所述的数据传输控制方法，其特征在于，所述主数据的数据帧包括一垂直同步包，当备网口接收到主数据的垂直同步包后，控制电子设备通过备网口获取备份数据。
  6. 根据权利要求1所述的数据传输控制方法，其特征在于，还包括步骤：
    备网口获取主数据后预设时间内，若备网口未收到主数据，将备网口设置为新的主网口，原主网口设置为新的备网口；
    从新的主网口获取主数据。
  7. 根据权利要求1所述的数据传输控制方法，其特征在于，所述通过所述备网口获取备份数据包括：
    从所述备网口获取备份数据；或
    通过所述备网口从数据源端获取备份数据。
  8. 一种数据传输控制系统，用于控制电子设备的数据传输，其特征在于，所述数据传输控制系统包括：
    主网口，用于从数据源端获取主数据；
    备网口，用于获取备份数据；
    呈现单元，用于呈现从主数据或备份数据中获取的数据帧；及
    控制单元，用于控制呈现单元通过主网口及备网口获取数据；
    当主数据经呈现单元传至备网口后，所述控制单元通过所述备网口获取备份数据。
  9. 根据权利要求8所述的数据传输控制系统，其特征在于，还包括：
    检测机构，用于获取异常信号，并将获取到的异常信号发送至控制单元，控制单元在接收到异常信号后，从备份数据中获取数据帧，并被所述呈现单元呈现；及
    切换单元，用于将主网口切换为备网口及将备网口切换为主网口。
  10. 一种存储设备，其特征在于，所述存储设备储存多条指令，所述指令适于由处理器加载并执行如权利要求1至7任一项所述的数据传输方法。
PCT/CN2018/095889 2018-01-02 2018-07-17 数据传输控制方法、控制系统及存储设备 WO2019134358A1 (zh)

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