CN113812127B - Method, device and system for transmitting data applied to LED display system - Google Patents

Method, device and system for transmitting data applied to LED display system Download PDF

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Publication number
CN113812127B
CN113812127B CN202080012660.5A CN202080012660A CN113812127B CN 113812127 B CN113812127 B CN 113812127B CN 202080012660 A CN202080012660 A CN 202080012660A CN 113812127 B CN113812127 B CN 113812127B
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address
last
target
target device
sends
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CN113812127A (en
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王文博
韩丹
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Xian Novastar Electronic Technology Co Ltd
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Xian Novastar Electronic Technology Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00—Network arrangements, protocols or services for addressing or naming
    • H04L61/50—Address allocation
    • H04L61/5007—Internet protocol [IP] addresses
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
    • G06F3/1423—Digital output to display device ; Cooperation and interconnection of the display device with other functional units controlling a plurality of local displays, e.g. CRT and flat panel display
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00—Network arrangements, protocols or services for addressing or naming
    • H04L61/50—Address allocation
    • H04L61/5038—Address allocation for local use, e.g. in LAN or USB networks, or in a controller area network [CAN]
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2370/00—Aspects of data communication
    • G09G2370/02—Networking aspects
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2370/00—Aspects of data communication
    • G09G2370/02—Networking aspects
    • G09G2370/025—LAN communication management
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2370/00—Aspects of data communication
    • G09G2370/04—Exchange of auxiliary data, i.e. other than image data, between monitor and graphics controller
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2370/00—Aspects of data communication
    • G09G2370/10—Use of a protocol of communication by packets in interfaces along the display data pipeline
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/003—Details of a display terminal, the details relating to the control arrangement of the display terminal and to the interfaces thereto
    • G09G5/006—Details of the interface to the display terminal

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Computer And Data Communications (AREA)

Abstract

The application discloses a method, a device and a system for transmitting data, which are applied to an LED display system, wherein the method comprises the following steps: the target equipment receives a first IP address sent by the next equipment connected with the target equipment and sends a second IP address to the last equipment connected with the target equipment, wherein the first IP address and the second IP address are respectively distributed by the next equipment and the target equipment based on remote network driver interface specifications; based on the first IP address, the target device establishes a first local area network with the next device; based on the second IP address, the target device establishes a second local area network with the last device; in the second local area network, the target device receives the data sent by the last device, and in the first local area network, the target device sends the data to the next device. The application solves the technical problem of great development difficulty caused by communication among a plurality of devices through the USB protocol in the related technology.

Description

Method, device and system for transmitting data applied to LED display system
Technical Field
The application relates to the field of display, in particular to a method, a device and a system for transmitting data, which are applied to an LED display system.
Background
The LED display system comprises a multimedia playing box and an LED display screen, wherein the multimedia playing box is composed of an application processor, a memory, a storage and application system (such as an Android system). In general, the multimedia playing box is connected with the LED display screen, the LED display screen needs to be configured with screen parameters, and the multimedia playing box needs to be configured with playing parameters, which all need to be stored. If there are only a few sets of LED display systems, the user can configure them individually. However, for an LED display system comprising a large number of LED display screens and multimedia play boxes, if it is also configured separately, it tends to result in repetition of the workload.
In order to solve the above problems, in the related art, a universal serial bus (Universal Serial Bus, USB) is connected between a plurality of LED display systems, and an upper computer transmits various data to a multimedia playing box and an LED display screen through a USB protocol to perform related configuration and save operations. However, the development difficulty of the USB protocol is large, resulting in an overall increase in production cost.
Aiming at the technical problems of great development difficulty caused by communication among a plurality of devices in the related art, such as a multimedia playing box through a USB protocol, no effective solution is proposed at present.
Disclosure of Invention
The embodiment of the application provides a method, a device and a system for transmitting data, which are applied to an LED display system, so as to at least solve the technical problem of great development difficulty caused by communication among a plurality of devices through a USB protocol in the related technology.
According to an aspect of an embodiment of the present application, there is provided a method of transmitting data, including: the target equipment receives a first IP address sent by the next equipment connected with the target equipment and sends a second IP address to the last equipment connected with the target equipment, wherein the first IP address and the second IP address are respectively distributed by the next equipment and the target equipment based on remote network driver interface specifications; based on the first IP address, the target device establishes a first local area network with the next device; based on the second IP address, the target device establishes a second local area network with the last device; in the second local area network, the target device receives the data sent by the last device, and in the first local area network, the target device sends the data to the next device. The embodiment solves the technical problem of great development difficulty caused by communication among a plurality of devices through a USB protocol in the related art, avoids the problem that the communication devices need to be configured one by one in advance, and achieves the purposes of reducing development difficulty and configuring a plurality of devices simultaneously.
Optionally, the target device includes a USB host module and a USB slave module, and the target device receives a first IP address sent by a next device connected to the target device and sends a second IP address to a last device connected to the target device, including: based on the remote network driver interface specification, the target device receives the first IP address through the USB host module and sends the second IP address to the previous device through the USB slave module. In the embodiment, the distribution of the IP address is realized by running the RNDIS protocol on the USB slave module.
Optionally, before the target device receives the first IP address through the USB host module and sends the second IP address to the previous device through the USB slave module, the method further includes: and setting the working mode of the USB slave module as a network card mode.
Optionally, after the target device establishes the second local area network with the last device based on the second IP address, the method further includes: receiving an acquisition instruction, wherein the acquisition instruction is set to acquire configuration information of target equipment; and returning configuration information to the last device.
Optionally, if the data includes multimedia information, the method further includes: the target device sends the multimedia information to the display device, wherein the display device is matched with the target device.
Optionally, the target device is connected with the previous device and the next device through USB.
According to another aspect of the embodiment of the present application, there is also provided a method for transmitting data, including: the target device receives a first IP address sent by the next device connected with the target device, wherein the first IP address is distributed by the next device based on the remote network driver interface specification; based on the first IP address, the target device establishes a first local area network with the next device; within the first local area network, the target device sends the data to the next device. The development difficulty is reduced through RNDIS protocol in the embodiment.
Optionally, before the target device receives the first IP address sent by the next device connected to the target device, the method further includes: receiving a configuration instruction, wherein the configuration instruction is set to configure a driver and software corresponding to a remote network driver interface specification for a target device; based on the configuration instructions, the drivers and software are configured. The embodiment can realize data transmission with the next device by configuring the driver and the software on the target device.
Optionally, the target device includes a USB host module, and the target device receives a first IP address sent by a next device connected to the target device, including: based on the remote network driver interface specification, the target device receives the first IP address through the USB host module.
According to another aspect of the embodiment of the present application, there is also provided a method for transmitting data, including: the target device sends a second IP address to the last device connected with the target device, wherein the second IP address is distributed by the target device based on the remote network driver interface specification; based on the second IP address, the target device establishes a second local area network with the last device; in the second local area network, the target device receives the data sent by the last device. The development difficulty is reduced through RNDIS protocol in the embodiment.
Optionally, the target device includes a USB slave module, and the target device sends the second IP address to a last device connected to the target device, including: based on the remote network driver interface specification, the target device sends a second IP address to the previous device via the USB slave module.
According to another aspect of the embodiment of the present application, there is also provided an apparatus for transmitting data, provided in a target device, the apparatus including: the first receiving module is configured to receive a first IP address sent by a next device connected with the target device and send a second IP address to a last device connected with the target device, wherein the first IP address and the second IP address are respectively distributed by the next device and the target device based on a remote network driver interface specification; the first establishing module is used for establishing a first local area network with the next device based on the first IP address; the second establishing module is used for establishing a second local area network with the last device based on a second IP address; the execution module is arranged to receive the data sent by the previous device in the second local area network and send the data to the next device in the first local area network.
According to another aspect of the embodiment of the present application, there is also provided a system for transmitting data, including: a plurality of cascaded devices including a last device and remaining devices except the last device, wherein each of the remaining devices receives a first IP address sent by a next device connected thereto and sends a second IP address to a last device connected thereto, the last device sends only the second IP address to the last device connected thereto, the first IP address and the second IP address being assigned based on a remote network driver interface specification; the upper computer is connected with a first device in the rest devices, is arranged to receive a first IP address sent by the first device, and establishes a first local area network with the first device based on the first IP address, and in the first local area network, the upper computer sends data to the first device, and the first device transmits the data to a second device connected with the first device until the data are sequentially transmitted to the last device. The system of the embodiment comprises a plurality of cascaded devices and an upper computer, solves the technical problem of high development difficulty caused by communication among the plurality of devices through a USB protocol in the related art through an RNDIS protocol, avoids the problem that the communication devices need to be configured one by one in advance, and achieves the purposes of reducing development difficulty and configuring the plurality of devices simultaneously.
According to another aspect of the embodiment of the present application, there is also provided a system for transmitting data, including: a plurality of cascaded devices including a last device and remaining devices except the last device, wherein each of the remaining devices receives a first IP address sent by a next device connected thereto and sends a second IP address to a last device connected thereto, the last device sends only the second IP address to the last device connected thereto, the first IP address and the second IP address being assigned based on a remote network driver interface specification; the upper computer is connected with a first device in the rest devices, is arranged to receive a first IP address sent by the first device, and establishes a first local area network with the first device based on the first IP address, and in the first local area network, the upper computer sends data to the first device, and the first device transmits the data to a second device connected with the first device until the data are sequentially transmitted to the last device; the display devices are matched with the cascade devices one by one and are set to display data. The system of the embodiment comprises a plurality of cascaded devices, a plurality of display devices and an upper computer, solves the technical problem of high development difficulty caused by communication among the plurality of devices through a USB protocol in the related art through an RNDIS protocol, intuitively displays transmitted data through the display devices, avoids the problem that the communication devices need to be configured one by one in advance, and achieves the purposes of reducing development difficulty and configuring the plurality of devices simultaneously.
In the embodiment of the application, the target equipment receives a first IP address sent by the next equipment connected with the target equipment and sends a second IP address to the last equipment connected with the target equipment, wherein the first IP address and the second IP address are respectively distributed by the next equipment and the target equipment based on remote network driver interface specifications; based on the first IP address, the target device establishes a first local area network with the next device; based on the second IP address, the target device establishes a second local area network with the last device; in the second local area network, the target device receives the data sent by the last device, and in the first local area network, the target device sends the data to the next device. Compared with the related art, the device can work in a network card mode, provides an IP address for the last device connected with the device through the remote network driver interface specification, solves the technical problem of high development difficulty caused by communication among a plurality of devices through a USB protocol in the related art, avoids the problem that the communication devices need to be configured one by one in advance, and achieves the purposes of reducing development difficulty and configuring the plurality of devices simultaneously.
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 specification, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute a limitation on the application. In the drawings:
FIG. 1 is a flow chart of an alternative method of transmitting data according to embodiment 1 of the present application;
FIG. 2 is a block diagram of an alternative apparatus for transmitting data according to embodiment 1 of the present application;
FIG. 3 is a flow chart of an alternative method of transmitting data according to embodiment 2 of the present application;
FIG. 4 is a block diagram of an alternative apparatus for transmitting data according to embodiment 2 of the present application;
FIG. 5 is a flowchart of an alternative method of transmitting data according to embodiment 3 of the present application;
fig. 6 is a block diagram of an alternative apparatus for transmitting data according to embodiment 3 of the present application;
fig. 7 is a schematic diagram of an alternative apparatus for transmitting data according to embodiment 4 of the present application;
fig. 8 is a schematic diagram of an alternative apparatus for transmitting data according to embodiment 5 of the present application;
fig. 9 is a schematic diagram of an alternative apparatus for transmitting data according to embodiment 6 of the present application;
FIG. 10 is a system configuration diagram of an alternative transmission data according to embodiment 7 of the present application; and
fig. 11 is a system configuration diagram of an alternative transmission data according to embodiment 8 of the present application.
Detailed Description
It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. In order that those skilled in the art will better understand the present application, a technical solution in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, shall fall within the scope of the present application.
Furthermore, the terms first, second and the like in the description and in the claims and in the above-described figures, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the application described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed or inherent to such process, method, article, or apparatus.
For convenience of description, the following will describe some terms or terminology involved in the embodiments of the present application:
transmission control protocol/internet protocol (Transmission Control Protocol/Internet Protocol, TCP/IP), refers to a protocol cluster capable of data transmission between a plurality of different networks, the name of which originates from the first two core protocols: transmission control protocol (Transmission Control Protocol, TCP) and internet protocol (Internet Protocol, IP), which specify the manner in which devices connect to the network and the criteria for how data is to be transmitted.
Example 1
According to the embodiment of the application, the embodiment of the method for transmitting the data is provided, and can be applied to a plurality of cascaded devices. It should be noted that the steps illustrated in the flowcharts of the figures may be performed in a computer system such as a set of computer executable instructions, and that although a logical order is illustrated in the flowcharts, in some cases the steps illustrated or described may be performed in an order other than that illustrated herein.
Fig. 1 is a flowchart of a method for transmitting data according to an embodiment of the present application, as shown in fig. 1, the method includes the steps of:
in step S102, the target device receives the first IP address sent by the next device connected to the target device, and sends the second IP address to the last device connected to the target device, where the first IP address and the second IP address are respectively allocated by the next device and the target device based on the remote network driver interface specification.
In an alternative scheme, the target device, the next device and the previous device may be the same device or different devices, which is not limited herein.
For convenience of description, the present application is described by way of example with the same multimedia play box. It should be noted that, in any data transmission among a plurality of devices, as long as each device can run remote network driver interface specifications (Remote Network Driver Interface Specification, RNDIS), the communication manner of the embodiment of the present application can be implemented within the protection scope of the present application, for example, a device with a typical Android (Android) board.
The remote network driver interface specification is an implementation of Network Driver Interface Specification (NDIS) based on USB, and actually functions as TCP/IP over USB, i.e. the TCP/IP protocol is run on a USB device depending on the USB device as a network card, so as to realize data transmission between devices.
In an alternative, the TCP/IP protocol described above may be invoked via a Socket programming interface.
Because the network driver interface specification defines the network card or the communication interface specification between the network card driver and the upper protocol driver, the difference of the physical hardware of the bottom layer is shielded, and the protocol driver of the upper layer can communicate with any model of network card of the bottom layer, the network driver interface specification creates a complete development environment for the network driver without considering the kernel of the operating system and the interface problem with other programs, thereby the network driver can be separated from the complex communication of the operating system, and the writing of the network driver is greatly facilitated.
In an alternative embodiment, a plurality of devices are cascaded, i.e. device 1 and device 2 are connected, and device 2 and device 3 are connected. The device 3 is used as a network card of the device 2, can run remote network driver interface specifications and distributes an IP address for the device 2; device 2 may operate as a network card for device 1, running a remote network driver interface specification, assigning an IP address to device 1. Obviously, the scheme can realize interconnection of equipment only by operating remote network driver interface specifications, so that development difficulty is greatly reduced.
Step S104, the target device establishes a first local area network with the next device based on the first IP address.
In an alternative, the first lan may be a TCP/IP lan.
Since the first IP address is sent by the next device to the target device, the target device and the next device can establish a first local area network.
Step S106, the target device establishes a second local area network with the last device based on the second IP address.
In an alternative, the second lan may be a TCP/IP lan.
Since the second IP address is sent by the target device to the last device, the last device and the target device can establish a second local area network.
It should be noted that, the first local area network and the second local area network are independent from each other and do not interfere with each other. If the transmission link of the second local area network fails, the data transmission of the first local area network is not affected.
In step S108, in the second local area network, the target device receives the data sent by the previous device, and in the first local area network, the target device sends the data to the next device.
In an alternative scheme, the data may be configuration parameters of the device, for example, configuration parameters (such as resolution, brightness, etc.) of a multimedia playing box, synchronous/asynchronous mode, network access mode (such as WiFi connection, 4G connection, 5G connection, etc.), temperature, memory usage, timing switch screen, etc., and may also be multimedia information, for example, video stream, picture, text, etc.
Through the steps, the target equipment and the last equipment establish a second local area network and establish a first local area network with the next equipment, so that data sent by the last equipment can be received through the second local area network, and then the received data is sent to the next equipment through the first local area network, and the data are sequentially transmitted, so that step-by-step transmission of the data is realized.
In an alternative embodiment, the host computer needs to configure the relevant parameters of n multimedia playing boxes at the same time. The 1 st multimedia playing box is connected with the upper computer, the 2 nd multimedia playing box is connected between the 1 st multimedia playing box and the 3 rd multimedia playing box, … …, and the n-1 th multimedia playing box is connected between the n-2 th multimedia playing box and the n-th multimedia playing box. The nth multimedia playing box distributes IP addresses to the nth-1 multimedia playing box based on RNDIS, and a local area network is formed between the nth multimedia playing box and the nth multimedia playing box; the n-1 multimedia playing box distributes IP addresses to the n-2 multimedia playing boxes based on RNDIS, and a local area network is formed between the n-2 multimedia playing boxes; … …; the 1 st multimedia playing box distributes IP addresses to the upper computer based on RNDIS, and a local area network is formed between the two. Therefore, after networking is completed, the upper computer needs to transmit data (for example, set related parameters of the multimedia playing box) to the multimedia playing box, and then the data can be sent to the 1 st multimedia playing box through the TCP/IP protocol. After the 1 st multimedia playing box receives the data, configuring relevant parameters of the 1 st multimedia playing box, transmitting the data to the 2 nd multimedia playing box, and then transmitting the data back step by the 2 nd multimedia playing box until the data is transmitted to the last multimedia playing box.
In the embodiment of the application, the target equipment receives a first IP address sent by the next equipment connected with the target equipment and sends a second IP address to the last equipment connected with the target equipment, wherein the first IP address and the second IP address are respectively distributed by the next equipment and the target equipment based on remote network driver interface specifications; based on the first IP address, the target device establishes a first local area network with the next device; based on the second IP address, the target device establishes a second local area network with the last device; in the second local area network, the target device receives the data sent by the last device, and in the first local area network, the target device sends the data to the next device. Compared with the related art, the device can work in a network card mode, provides an IP address for the last device connected with the device through the remote network driver interface specification, solves the technical problem of high development difficulty caused by communication among a plurality of devices through a USB protocol in the related art, avoids the problem that the communication devices need to be configured one by one in advance, and achieves the purposes of low development difficulty and configuration of the plurality of devices.
Obviously, the above scheme of the embodiment can configure a plurality of devices at the same time, which not only improves the working efficiency, but also can maintain the consistency of the transmission parameters.
The above steps of this embodiment are further described below.
Optionally, the target device includes a USB host module and a USB slave module, in step S102, the target device receives a first IP address sent by a next device connected to the target device and sends a second IP address to a last device connected to the target device, which specifically may include:
in step S1022, based on the remote network driver interface specification, the target device receives the first IP address through the USB host module and sends the second IP address to the previous device through the USB slave module.
In an alternative, the USB host (host) module may include a USB host interface, and the USB slave (device) module may include a USB slave interface.
It should be noted that the target device, the previous device, and the next device may be the same device, and may include a USB host module and a USB slave module.
Fig. 2 shows an alternative arrangement configuration of the data transmission. As shown in fig. 2, the target device is connected between the previous device and the next device. Specifically, the target device is connected to the USB host module of the previous device through the USB slave interface of the USB slave module, and the target device is connected to the USB slave module of the next device through the host interface of the USB host module.
Optionally, before performing step S1022, the target device receives the first IP address through the USB host module and sends the second IP address to the previous device through the USB slave module, the method may further include:
step S1021, setting the working mode of the USB slave module as a network card mode.
In an alternative scheme, the network card mode may be an RNDIS mode, and may be set through a USB slave module. For example, the RNDIS mode can be set by the matched software after the system is started, so that the setting time is saved, and the working efficiency is improved.
Optionally, after performing step S106 to establish a second local area network with the target device and the last device based on the second IP address, the method may further include:
in step S1051, an acquisition instruction is received, wherein the acquisition instruction is set to acquire configuration information of the target device.
Taking the multimedia playing box as an example, the configuration information may include the screen configuration parameters (such as resolution, brightness, etc.), synchronous/asynchronous mode, network access mode (such as WiFi connection, 4G connection, 5G connection, etc.), temperature, memory usage, timing switch screen, etc. of the multimedia playing box.
Step S1052, the configuration information is returned to the previous device.
After receiving the acquisition instruction, the target equipment returns the configuration information of the target equipment to the previous equipment, and the configuration information is transmitted to the upper computer step by step through the previous equipment, so that the upper computer sends the configuration instruction according to the configuration information of the target equipment.
Under the condition that the configuration information of the plurality of devices is the same, the upper computer only needs to acquire the configuration information of the first device connected with the upper computer.
Optionally, if the data includes multimedia information, the method may further include:
in step S109, the target device sends the multimedia information to the display device, where the display device is matched with the target device.
In an alternative scheme, the multimedia information can be in the form of video stream, picture, text and the like; the display device can be a television wall, a display screen and the like, and is controlled by a multimedia playing box matched with the display device.
Optionally, the target device is connected with the previous device and the next device through USB.
Specifically, the USB slave interface of the target device is connected to the USB host interface of the previous device through USB, and the USB host interface of the target device is also connected to the USB slave interface of the next device through USB. In addition, the USB slave interface of the first device is also connected with the USB host interface of the upper computer through USB.
Therefore, the plurality of devices can be configured simultaneously by only connecting through USB (universal serial bus) and plug and play without more configuration. The developer does not need to pay attention to the USB protocol, so that the development difficulty is reduced.
In the above embodiment of the present application, the target device receives a first IP address sent by a next device connected to the target device and sends a second IP address to a previous device connected to the target device, where the first IP address and the second IP address are respectively allocated by the next device and the target device based on a remote network driver interface specification; based on the first IP address, the target device establishes a first local area network with the next device; based on the second IP address, the target device establishes a second local area network with the last device; in the second local area network, the target device receives the data sent by the last device, and in the first local area network, the target device sends the data to the next device. Compared with the related art, the device can work in a network card mode, provides an IP address for the last device connected with the device through the remote network driver interface specification, solves the technical problem of high development difficulty caused by communication among a plurality of devices through a USB protocol in the related art, avoids the problem that the communication devices need to be configured one by one in advance, and achieves the purposes of reducing development difficulty and configuring the plurality of devices simultaneously. It is easy to notice that the above solution realizes TCP/IP communication between devices through the USB host module and the USB slave module; the USB slave module is set to be in a network card mode, and an IP address is allocated to the last device; the configuration information is transmitted to the last device, so that the upper computer can conveniently send out a configuration instruction; displaying multimedia information through a display device matched with the multimedia playing box; the USB is used for connecting all the devices, so that plug and play is realized, more configuration is not needed, and the working efficiency is greatly improved.
From the description of the above embodiments, it will be clear to a person skilled in the art that the method according to the above embodiments may be implemented by means of software plus the necessary general hardware platform, but of course also by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a storage medium (e.g. ROM/RAM, magnetic disk, optical disk) comprising instructions for causing a terminal device (which may be a mobile phone, a computer, a server, or a network device, etc.) to perform the method according to the embodiments of the present application.
Example 2
According to the embodiment of the application, the embodiment of the method for transmitting the data is provided and can be applied to an upper computer. It should be noted that the steps illustrated in the flowcharts of the figures may be performed in a computer system such as a set of computer executable instructions, and that although a logical order is illustrated in the flowcharts, in some cases the steps illustrated or described may be performed in an order other than that illustrated herein.
Fig. 3 is a flowchart of a method for transmitting data according to an embodiment of the present application, as shown in fig. 3, the method includes the steps of:
in step S302, the target device receives a first IP address sent by a next device connected to the target device, where the first IP address is allocated by the next device based on a remote network driver interface specification.
In an alternative scheme, the target device may be an upper computer or an intelligent terminal with a control function; the next device may run remote network driver interface specifications (Remote Network Driver Interface Specification, RNDIS), for example, a device with a typical Android (Android) board, so as to implement a communication manner according to an embodiment of the present application. In addition, the present application is exemplified by a multimedia playing box, but the present application is not limited thereto.
For convenience of description, the present application is described by way of example with the same multimedia play box. It should be noted that, in any data transmission among a plurality of devices, as long as each device can run remote network driver interface specifications (Remote Network Driver Interface Specification, RNDIS), the communication manner of the embodiment of the present application can be implemented within the protection scope of the present application, for example, a device with a typical Android (Android) board.
The remote network driver interface specification is an implementation of Network Driver Interface Specification (NDIS) based on USB, and actually functions as TCP/IP over USB, i.e. the TCP/IP protocol is run on a USB device depending on the USB device as a network card, so as to realize data transmission between devices.
In an alternative, the TCP/IP protocol described above may be invoked via a Socket programming interface.
Because the network driver interface specification defines the network card or the communication interface specification between the network card driver and the upper protocol driver, the difference of the physical hardware of the bottom layer is shielded, and the protocol driver of the upper layer can communicate with any model of network card of the bottom layer, the network driver interface specification creates a complete development environment for the network driver without considering the kernel of the operating system and the interface problem with other programs, thereby the network driver can be separated from the complex communication of the operating system, and the writing of the network driver is greatly facilitated.
In an alternative embodiment, the upper computer is connected with the device 1, and the device 1 is used as a network card of the upper computer, and can run remote network driver interface specifications to allocate an IP address to the upper computer.
Step S304, the target device establishes a first local area network with the next device based on the first IP address.
In an alternative, the first lan may be a TCP/IP lan.
Since the first IP address is sent by the next device to the target device, the target device and the next device can establish a first local area network.
In step S306, the target device sends the data to the next device in the first lan.
In an alternative scheme, the data may be configuration parameters of the device, for example, configuration parameters (such as resolution, brightness, etc.) of a multimedia playing box, synchronous/asynchronous mode, network access mode (such as WiFi connection, 4G connection, 5G connection, etc.), temperature, memory usage, timing switch screen, etc., and may also be multimedia information, for example, video stream, picture, text, etc.
By the above steps, the target device establishes the first local area network with the next device, and then can send data to the next device.
The above steps of this embodiment are further described below.
Optionally, before performing step S302, the target device receives the first IP address sent by the next device connected to the target device, the method may further include the following steps:
Step S3011, receiving a configuration instruction, where the configuration instruction is set to configure a driver and software corresponding to the remote network driver interface specification for the target device.
In an alternative, the driver may be an RNDIS interface driver, and the software may be desktop software associated with a next device connected to the driver, for example, a display management software ViPlex Express associated with a multimedia playing box.
Step S3012, based on the configuration instruction, configures the driver and software.
After receiving the configuration instruction, the target device may configure the driver and corresponding software for itself.
Optionally, the target device includes a USB host module, and the target device receives a first IP address sent by a next device connected to the target device, including: based on the remote network driver interface specification, the target device receives the first IP address through the USB host module.
In one alternative, the USB host (host) module may include a USB host interface.
Fig. 4 shows an alternative arrangement configuration of the data transmission. As shown in fig. 4, the host computer is connected to the slave interface of the USB slave module of the next device through the host interface of the USB host module, for example, the host interface and the slave interface are directly connected through USB, and the USB type b interface of the multimedia playing box is directly connected to the host interface of the host computer. The upper computer runs desktop software Viplex Express matched with the multimedia playing box, and installs RNDIS drivers. Because the multimedia playing box runs the RNDIS on the USB slave module, the USB slave module is virtualized into a network card, and the network card is distributed with the IP address to the upper computer, so that the multimedia playing box and the upper computer establish a TCP/IP local area network. Viplex Express software is opened, and the Viplex Express can acquire multimedia configuration information, set screen allocation parameters, send multimedia information and other data to a plurality of devices by searching a multimedia playing box connected with the USB host module.
It is easy to note that the above scheme of this embodiment is simple to operate, and the operation is the same as the operation of the network cable connection.
It should be noted that, in the above embodiment 2 of the present application, the preferred embodiment is the same as the scheme provided in the embodiment 1 and the implementation process of the application scenario, but is not limited to the scheme provided in the embodiment 1.
Example 3
According to the embodiment of the application, the embodiment of the method for transmitting the data is provided, and can be applied to the last device of a plurality of cascade devices. It should be noted that the steps illustrated in the flowcharts of the figures may be performed in a computer system such as a set of computer executable instructions, and that although a logical order is illustrated in the flowcharts, in some cases the steps illustrated or described may be performed in an order other than that illustrated herein.
Fig. 5 is a flowchart of a method for transmitting data according to an embodiment of the present application, as shown in fig. 5, the method includes the steps of:
in step S502, the target device sends a second IP address to the last device connected thereto, where the second IP address is allocated by the target device based on the remote network driver interface specification.
In an alternative scheme, the target device may be the last device of a plurality of cascade devices, and may run remote network driver interface specifications (Remote Network Driver Interface Specification, RNDIS), for example, a device with a typical Android (Android) board card, so as to implement a communication manner according to an embodiment of the present application; the above-mentioned last device may be the same device as the target device, or may be an intelligent terminal having a control function, for example, a computer.
The remote network driver interface specification is an implementation of Network Driver Interface Specification (NDIS) based on USB, and actually functions as TCP/IP over USB, i.e. the TCP/IP protocol is run on a USB device depending on the USB device as a network card, so as to realize data transmission between devices.
In an alternative, the TCP/IP protocol described above may be invoked via a Socket programming interface.
Because the network driver interface specification defines the network card or the communication interface specification between the network card driver and the upper protocol driver, the difference of the physical hardware of the bottom layer is shielded, and the protocol driver of the upper layer can communicate with any model of network card of the bottom layer, the network driver interface specification creates a complete development environment for the network driver without considering the kernel of the operating system and the interface problem with other programs, thereby the network driver can be separated from the complex communication of the operating system, and the writing of the network driver is greatly facilitated.
For example, the device 2 as a target device is connected to the last device (i.e., the device 1), and the device 2 as a network card of the device 1 may operate in the RNDIS mode to assign an IP address to the device 1.
In step S504, the target device establishes a second local area network with the last device based on the second IP address.
In an alternative, the second lan may be a TCP/IP lan.
Since the second IP address is sent by the target device to the last device, the target device and the last device can establish a second local area network.
In step S506, in the second lan, the target device receives the data sent by the previous device.
In an alternative scheme, the data may be configuration parameters of the device, for example, configuration parameters (such as resolution, brightness, etc.) of a multimedia playing box, synchronous/asynchronous mode, network access mode (such as WiFi connection, 4G connection, 5G connection, etc.), temperature, memory usage, timing switch screen, etc., and may also be multimedia information, for example, video stream, picture, text, etc.
By the steps, the target device establishes a second local area network with the last device, and then the data sent by the last device can be received.
Optionally, the target device includes a USB slave module, and the target device sends the second IP address to a last device connected to the target device, including: based on the remote network driver interface specification, the target device sends a second IP address to the previous device via the USB slave module.
In an alternative, the USB slave (device) module may include a USB slave interface.
Fig. 6 shows an alternative arrangement configuration of the data transmission. As shown in fig. 6, the target device, i.e., the last device of the plurality of cascade devices, is connected to the host interface of the USB host module of the last device through the slave interface of the USB slave module, for example, the host interface and the slave interface are directly connected through USB. Because the target device runs the RNDIS on the USB slave module, the USB slave module is virtualized into a network card, and the IP address is allocated to the last device, the target device establishes a TCP/IP local area network with the last device, and can receive the data sent by the last device.
It should be noted that, in the above embodiment 3 of the present application, the preferred embodiment is the same as the scheme provided in the embodiment 1 and the implementation process of the application scenario, but is not limited to the scheme provided in the embodiment 1.
Example 4
According to an embodiment of the present application, an apparatus for transmitting data is provided, and it should be noted that the apparatus for transmitting data according to the embodiment of the present application may be used to perform the method for transmitting data provided in embodiment 1 of the present application. The following describes a device for transmitting data according to an embodiment of the present application.
Fig. 7 is a schematic diagram of an apparatus for transmitting data according to an embodiment of the present application. As shown in fig. 7, the apparatus 700 is provided in a target device, and the apparatus 700 includes: a first receiving module 702, a first establishing module 704, a second establishing module 706, and an executing module 708.
The first receiving module 702 is configured to receive a first IP address sent by a next device connected to the target device, and send a second IP address to a previous device connected to the target device, where the first IP address and the second IP address are respectively allocated by the next device and the target device based on a remote network driver interface specification; a first establishing module 704 configured to establish a first local area network with a next device based on the first IP address; a second establishing module 706 configured to establish a second local area network with the previous device based on the second IP address; an execution module 708 is configured to receive, in the second lan, the data sent by the previous device and send, in the first lan, the data to the next device.
Optionally, the target device includes a USB host module and a USB slave module, and the target device receives a first IP address sent by a next device connected to the target device and sends a second IP address to a last device connected to the target device, including: based on the remote network driver interface specification, the target device receives the first IP address through the USB host module and sends the second IP address to the previous device through the USB slave module.
Optionally, the apparatus may further include: the setting module is configured to set the working mode of the USB slave module to be a network card mode before the target device receives the first IP address through the USB host module and sends the second IP address to the previous device through the USB slave module.
Optionally, the apparatus may further include: the second receiving module is configured to receive an acquisition instruction after the target device establishes a second local area network with the last device based on a second IP address, wherein the acquisition instruction is configured to acquire configuration information of the target device; and the return module is used for returning configuration information to the last device.
Optionally, if the data includes multimedia information, the apparatus may further include: and the sending module is arranged for the target equipment to send the multimedia information to the display equipment, wherein the display equipment is matched with the target equipment.
Optionally, the target device is connected with the previous device and the next device through USB.
It should be noted that the first receiving module 702, the first establishing module 704, the second establishing module 706, and the executing module 708 correspond to steps S102 to S108 in embodiment 1, and the four modules are the same as examples and application scenarios implemented by the corresponding steps, but are not limited to those disclosed in embodiment 1.
Example 5
According to an embodiment of the present application, an apparatus for transmitting data is provided, and it should be noted that the apparatus for transmitting data according to the embodiment of the present application may be used to perform the method for transmitting data provided in embodiment 2 of the present application. The following describes a device for transmitting data according to an embodiment of the present application.
Fig. 8 is a schematic diagram of an apparatus for transmitting data according to an embodiment of the present application. As shown in fig. 8, the apparatus 800 is disposed in a target device, and the apparatus 800 includes a first receiving module 802, a setting-up module 804, and a transmitting module 806.
Wherein the first receiving module 802 is configured to receive a first IP address sent by a next device connected to the target device, where the first IP address is allocated by the next device based on a remote network driver interface specification; an establishing module 804, configured to establish a first local area network between the target device and the next device based on the first IP address; a sending module 806, configured to send, in the first lan, the data to the next device by the target device.
Optionally, the apparatus may further include: the second receiving module is configured to receive a configuration instruction before the target device receives the first IP address sent by the next device connected with the second receiving module, wherein the configuration instruction is configured to configure a driver and software corresponding to the remote network driver interface specification for the target device; and the configuration module is used for configuring the driver and the software based on the configuration instruction.
Optionally, the first receiving module includes: the first receiving sub-module is configured to receive the first IP address through the USB host module based on the remote network driver interface specification.
It should be noted that the first receiving module 802, the establishing module 804, and the sending module 806 correspond to steps S402 to S406 in embodiment 2, and the three modules are the same as the examples and application scenarios implemented by the corresponding steps, but are not limited to those disclosed in embodiment 2.
Example 6
According to an embodiment of the present application, an apparatus for transmitting data is provided, and it should be noted that the apparatus for transmitting data according to the embodiment of the present application may be used to perform the method for transmitting data provided in embodiment 3 of the present application. The following describes a device for transmitting data according to an embodiment of the present application.
Fig. 9 is a schematic diagram of an apparatus for transmitting data according to an embodiment of the present application. As shown in fig. 9, the apparatus 900 may be disposed in a target device, where the apparatus 900 includes a sending module 902, a setting-up module 904, and a receiving module 906.
Wherein the sending module 902 is configured to send a second IP address to a last device connected to the target device, where the second IP address is allocated by the target device based on a remote network driver interface specification; an establishing module 904, configured to establish a second local area network with the target device and the previous device based on the second IP address; and the receiving module 906 is configured to receive, by the target device, data sent by a previous device in the second local area network.
Optionally, the target device includes a USB slave module, and the sending module includes: and the sending sub-module is set to send the second IP address to the previous device through the USB slave module based on the remote network driver interface specification.
It should be noted that the above-mentioned transmitting module 902, establishing module 904 and receiving module 906 correspond to steps S502 to S506 in embodiment 3, and these three modules are the same as examples and application scenarios implemented by the corresponding steps, but are not limited to those disclosed in embodiment 3 above.
Example 7
In its most basic configuration, fig. 10 is a system structural diagram of transmitting data according to an embodiment of the present application. For purposes of description, the architecture portrayed is only one example of a suitable environment and is not intended to suggest any limitation as to the scope of use or functionality of the application. Nor should the system be construed as having any dependency or requirement relating to any one or combination of components illustrated in figure 10.
As shown in fig. 10, the system for transmitting data provided by the present application includes:
a plurality of cascaded devices including a last device and remaining devices except the last device, wherein each of the remaining devices receives a first IP address sent by a next device connected thereto and sends a second IP address to a last device connected thereto, the last device sends only the second IP address to the last device connected thereto, the first IP address and the second IP address being assigned based on a remote network driver interface specification.
The upper computer is connected with a first device in the rest devices, is arranged to receive a first IP address sent by the first device, and establishes a first local area network with the first device based on the first IP address, and in the first local area network, the upper computer sends data to the first device, and the first device transmits the data to a second device connected with the first device until the data are sequentially transmitted to the last device.
Example 8
In its most basic configuration, fig. 11 is a system configuration diagram of transmitting data according to an embodiment of the present application. For purposes of description, the architecture portrayed is only one example of a suitable environment and is not intended to suggest any limitation as to the scope of use or functionality of the application. Nor should the system be construed as having any dependency or requirement relating to any one or combination of components illustrated in figure 11.
As shown in fig. 11, the system for transmitting data provided by the present application includes:
a plurality of cascaded devices including a last device and remaining devices except the last device, wherein each of the remaining devices receives a first IP address sent by a next device connected thereto and sends a second IP address to a last device connected thereto, the last device sends only the second IP address to the last device connected thereto, the first IP address and the second IP address being assigned based on a remote network driver interface specification.
In the alternative, the devices may be the same device, such as a multimedia playing box, which is not limited herein. All data transmission among a plurality of identical devices is within the protection scope of the application.
The upper computer is connected with a first device in the rest devices, is arranged to receive a first IP address sent by the first device, and establishes a first local area network with the first device based on the first IP address, and in the first local area network, the upper computer sends data to the first device, and the first device transmits the data to a second device connected with the first device until the data are sequentially transmitted to the last device.
In an alternative scheme, the upper computer can be an intelligent terminal with a control function, such as a computer.
The display devices are matched with the cascade devices one by one and are set to display data.
In an alternative, the display device may be a video wall, a display screen, etc., and the display device is controlled by a multimedia playing box matched with the display device.
For example, since the LED display screen needs to be displayed in various combinations in many occasions, the method is particularly suitable for the method of the embodiment, and parameter setting can be performed on a plurality of LED display screens at the same time.
In the embodiment of the application, the system for transmitting data mainly comprises a plurality of cascaded devices, an upper computer and a plurality of display devices. Compared with the related art, the device in the application can work in the network card mode, provides the IP address for the last device connected with the device through the remote network driver interface specification, solves the technical problem of high development difficulty caused by communication among a plurality of devices through the USB protocol in the related art, avoids the problem that the communication devices need to be configured one by one in advance, and achieves the purposes of low development difficulty and configuration of the plurality of devices. It is easy to note that since the schemes of the embodiments can be combined with each other, the above scheme realizes TCP/IP communication between devices through the USB host module and the USB slave module; the USB slave module is set to be in a network card mode, and an IP address is allocated to the last device; the configuration information is transmitted to the last device, so that the upper computer can conveniently send out a configuration instruction; displaying multimedia information through a display device matched with the multimedia playing box; the USB is used for connecting all the devices, so that plug and play is realized, more configuration is not needed, and the working efficiency is greatly improved.
The foregoing embodiment numbers of the present application are merely for the purpose of description, and do not represent the advantages or disadvantages of the embodiments.
In the foregoing embodiments of the present application, the descriptions of the embodiments are emphasized, and for a portion of this disclosure that is not described in detail in this embodiment, reference is made to the related descriptions of other embodiments.
In the several embodiments provided in the present application, it should be understood that the disclosed technology may be implemented in other manners. The above-described embodiments of the apparatus are merely exemplary, and the division of the units, for example, may be a logic function division, and may be implemented in another manner, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be through some interfaces, units or modules, or may be in electrical or other forms.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in the embodiments of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be embodied essentially or in part or all of the technical solution or in part in the form of a software product stored in a storage medium, including instructions for causing a computer device (which may be a personal computer, a server, a network device, or the like) to perform all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a removable hard disk, a magnetic disk, or an optical disk, or other various media capable of storing program codes.
The foregoing is merely a preferred embodiment of the present application and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present application, which are intended to be comprehended within the scope of the present application.
Industrial applicability
The scheme provided by the embodiment of the application can be set as the display field, and is particularly suitable for scenes communicated for the multimedia playing box. In the embodiment of the application, the IP address is provided for the last device connected with the remote network driver interface standard and the IP address provided by the next device connected with the remote network driver interface standard is received, so that the technical problem of high development difficulty caused by communication among a plurality of devices through USB protocols in the related technology is solved, the problem that the communication devices need to be configured one by one in advance is avoided, the development difficulty is reduced, and the technical effect of configuring the plurality of devices is achieved.

Claims (13)

1. A method of transmitting data for use in an LED display system, comprising:
the target equipment receives a first IP address sent by the next equipment connected with the target equipment and sends a second IP address to the last equipment connected with the target equipment, wherein the first IP address and the second IP address are respectively distributed by the next equipment and the target equipment based on remote network driver interface specifications;
The target device comprises a USB host module and a USB slave module, and the target device receives a first IP address sent by the next device connected with the target device and sends a second IP address to the last device connected with the target device, and the target device comprises: based on the remote network driver interface specification, the target device sends the second IP address to the last device through the USB slave module;
before the target device sends the second IP address to the last device through the USB slave module, the method further includes: setting the working mode of the USB slave module as a network card mode;
based on the first IP address, the target device establishes a first local area network with the next device;
based on the second IP address, the target device establishes a second local area network with the last device;
and in the second local area network, the target equipment receives the data sent by the last equipment, and in the first local area network, the target equipment sends the data to the next equipment.
2. The method of claim 1, wherein the target device receives a first IP address transmitted from a next device connected thereto and transmits a second IP address to a last device connected thereto, comprising:
The target device receives the first IP address through the USB host module based on the remote network driver interface specification.
3. The method of claim 1, wherein after the target device establishes a second local area network with the last device based on the second IP address, the method further comprises:
receiving an acquisition instruction, wherein the acquisition instruction is set to acquire configuration information of the target equipment;
and returning the configuration information to the last device.
4. The method of claim 1, wherein if the data comprises multimedia information, the method further comprises:
and the target equipment sends the multimedia information to display equipment, wherein the display equipment is matched with the target equipment.
5. The method of claim 1, wherein the target device and the last device, the next device are connected by USB.
6. A method of transmitting data for use in an LED display system, comprising:
the target equipment receives a first IP address sent by the next equipment connected with the target equipment, wherein the first IP address is distributed by the next equipment based on remote network driver interface specifications;
Based on the first IP address, the target device establishes a first local area network with the next device;
within the first local area network, the target device sends data to the next device;
the target device comprises a USB host module and a USB slave module, and the method further comprises: based on the remote network driver interface specification, the target device sends a second IP address to the last device connected with the target device through the USB slave module;
before the target device sends the second IP address to the last device connected to the target device through the USB slave module, the method further includes: and setting the working mode of the USB slave module as a network card mode.
7. The method of claim 6, wherein before the target device receives the first IP address sent by the next device to which it is connected, the method further comprises:
receiving a configuration instruction, wherein the configuration instruction is set to enable the target device to configure a driver and software corresponding to the remote network driver interface specification;
and configuring the driver and the software based on the configuration instruction.
8. The method of claim 6, wherein the target device comprises a USB host module, the target device receiving a first IP address sent by a next device connected thereto, comprising:
The target device receives the first IP address through the USB host module based on the remote network driver interface specification.
9. A method of transmitting data for use in an LED display system, comprising:
the target device sends a second IP address to the last device connected with the target device, wherein the second IP address is distributed by the target device based on the remote network driver interface specification;
the target device comprises a USB host module and a USB slave module, and the target device sends a second IP address to the last device connected with the target device, and the method comprises the following steps: based on the remote network driver interface specification, the target device sends the second IP address to the last device through the USB slave module;
before the target device sends the second IP address to the last device through the USB slave module, the method further includes: setting the working mode of the USB slave module as a network card mode;
based on the second IP address, the target device establishes a second local area network with the last device;
and in the second local area network, the target equipment receives the data sent by the last equipment.
10. The method of claim 9, wherein the target device includes a USB slave module, the target device sending a second IP address to a last device connected thereto, comprising:
based on the remote network driver interface specification, the target device sends the second IP address to the last device through the USB slave module.
11. An apparatus for transmitting data for use in an LED display system, disposed in a target device, the apparatus comprising:
the first receiving module is configured to receive a first IP address sent by a next device connected with the target device and send a second IP address to a last device connected with the target device, wherein the first IP address and the second IP address are respectively distributed by the next device and the target device based on a remote network driver interface specification;
the target device comprises a USB host module and a USB slave module, and the first receiving module is further configured to send the second IP address to the last device through the USB slave module based on the remote network driver interface specification;
before the second IP address is sent to the last device through the USB slave module, the device is further set to set the working mode of the USB slave module to be a network card mode;
A first establishing module configured to establish a first local area network with the next device based on the first IP address;
the second establishing module is configured to establish a second local area network with the last device based on the second IP address;
and the execution module is arranged to receive the data sent by the last device in the second local area network and send the data to the next device in the first local area network.
12. A system for transmitting data for use in an LED display system, comprising:
a plurality of cascaded devices including a last device and remaining devices except the last device, wherein each of the remaining devices receives a first IP address sent by a next device connected thereto and sends a second IP address to a last device connected thereto, the last device sends only the second IP address to the last device connected thereto, the first IP address and the second IP address being assigned based on a remote network driver interface specification;
each device comprises a USB host module and a USB slave module, each device in the rest devices sends a second IP address to the last device connected with the device, and the method comprises the following steps: based on the remote network driver interface specification, each device sends the second IP address to the last device through the USB slave module;
Before each device sends the second IP address to the last device through the USB slave module, each device sets the working mode of the USB slave module to be a network card mode;
the upper computer is connected with a first device in the other devices, is arranged to receive a first IP address sent by the first device, and establishes a first local area network with the first device based on the first IP address, and in the first local area network, the upper computer sends data to the first device, and the first device transmits the data to a second device connected with the first device until the data are sequentially transmitted to the last device.
13. A system for transmitting data for use in an LED display system, comprising:
a plurality of cascaded devices including a last device and remaining devices except the last device, wherein each of the remaining devices receives a first IP address sent by a next device connected thereto and sends a second IP address to a last device connected thereto, the last device sends only the second IP address to the last device connected thereto, the first IP address and the second IP address being assigned based on a remote network driver interface specification;
Each device comprises a USB host module and a USB slave module, each device in the rest devices sends a second IP address to the last device connected with the device, and the method comprises the following steps: based on the remote network driver interface specification, each device sends the second IP address to the last device through the USB slave module;
before each device sends the second IP address to the last device through the USB slave module, each device sets the working mode of the USB slave module to be a network card mode;
the upper computer is connected with a first device in the other devices, is arranged to receive a first IP address sent by the first device, and establishes a first local area network with the first device based on the first IP address, and in the first local area network, the upper computer sends the data to the first device, and the first device transmits the data to a second device connected with the first device until the data are sequentially transmitted to the last device;
and the display devices are matched with the cascade devices one by one and are used for displaying the data.
CN202080012660.5A 2020-03-19 2020-03-19 Method, device and system for transmitting data applied to LED display system Active CN113812127B (en)

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