CN113473242A - Video image transmission method, related system, device and storage medium - Google Patents

Video image transmission method, related system, device and storage medium Download PDF

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Publication number
CN113473242A
CN113473242A CN202110682733.8A CN202110682733A CN113473242A CN 113473242 A CN113473242 A CN 113473242A CN 202110682733 A CN202110682733 A CN 202110682733A CN 113473242 A CN113473242 A CN 113473242A
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Prior art keywords
wireless network
sending
receiving end
receiving
video image
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CN202110682733.8A
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Chinese (zh)
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CN113473242B (en
Inventor
董淳昱
陈怡儒
刘于琮
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Actions Microelectronics Co ltd
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Actions Microelectronics Co ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
    • H04N21/643—Communication protocols
    • 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
    • H04L65/65—Network streaming protocols, e.g. real-time transport protocol [RTP] or real-time control protocol [RTCP]
    • 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
    • H04L65/75—Media network packet handling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs
    • H04N21/44008—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream, rendering scenes according to MPEG-4 scene graphs involving operations for analysing video streams, e.g. detecting features or characteristics in the video stream
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
    • H04N21/643—Communication protocols
    • H04N21/6437—Real-time Transport Protocol [RTP]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Abstract

The invention provides a video image transmission method, which comprises the following steps: respectively connecting an I2C/DDC channel and an image channel of a receiving end device with a sending end device; pairing the receiving end equipment with the sending end equipment; judging the video image transmission mode according to the number of receiving end equipment needing to be networked and the number of sending end equipment needing to be networked; the method comprises the steps that a sending end device is added into a WIFI wireless network of a receiving end device, and the receiving end device receives streaming video images of a plurality of sending end devices; the receiving terminal equipment is added into a WIFI wireless network of the sending terminal equipment, and the sending terminal equipment sends the video images to the multiple receiving terminal equipment. The invention also provides a video image transmission system, a video image transmission device and a computer readable storage medium. Compared with the related technology, the technical scheme of the invention can realize dynamic switching of one-to-many or many-to-one video image transmission modes, and has simple structure and good user experience.

Description

Video image transmission method, related system, device and storage medium
[ technical field ] A method for producing a semiconductor device
The present invention relates to the field of wireless video image transmission technologies, and in particular, to a video image transmission method, a video image transmission system, a video image transmission device, and a computer-readable storage medium.
[ background of the invention ]
As video image transmission systems become more widely used, wireless connection between a display device and a signal source device via a wireless projection system is an important function.
The related art wireless video image transmission system includes a sending end device and a receiving end device, wherein the sending end device is connected to the signal source device, and the receiving end device is connected to the display. And the signal source equipment sends the generated display signals to the display through the sending end equipment and the receiving end equipment in sequence, and the display receives and displays the display signals.
However, the current transmitter and receiver require a pre-installation of an application or driver for the wireless connection and a pre-pairing to establish the wireless connection for the projection. Additional hardware, such as buttons or USB interfaces, is required for pairing. Wherein, the pre-pairing generally adopts USB pairing. Meanwhile, in the wireless networking application, when one sending end device and a plurality of receiving end devices (i.e., one-to-many video image transmission modes) and a plurality of sending end devices and one receiving end device (i.e., many-to-one video image transmission modes) are applied, a router needs to be arranged between the sending end device and the receiving end device, software and hardware setting needs to be performed on the router during application, dynamic switching cannot be achieved, user operation is complex, in addition, a router needs to be added by a user, and connection relation needs to be set on the router temporarily, so that the erection cost is high and the user experience is not good.
Therefore, there is a need to provide a new method and related system and apparatus to solve the above technical problems.
[ summary of the invention ]
The present invention is directed to overcome the above-mentioned problems, and provides a video image transmission method, a video image transmission system, a video image transmission device, and a computer-readable storage medium, which can dynamically switch one-to-many or many-to-one video image transmission modes, have a simple structure, and provide a user with a good experience.
In order to achieve the above object, the present invention provides a video image transmission method, which is applied to a video image transmission system, wherein the video image transmission system comprises a plurality of receiving end devices and a plurality of sending end devices, and the method comprises the following steps:
step S1, connecting the I2C/DDC channel of the sink device with the I2C/DDC channel of the sender device, and connecting the video channel of the sink device with the video channel of the sender device;
step S2, pairing the receiving terminal equipment and the sending terminal equipment; wherein, the step S2 specifically includes the following sub-steps:
step S21, the receiving end equipment obtains the extended display identification data pre-stored in the sending end equipment through an I2C/DDC channel, calculates according to the pairing information in the extended display identification data, calculates the wireless network access point online information of the sending end equipment, and then stores the wireless network access point online information, wherein the extended display identification data comprises identity identification information and the pairing information;
step S22, the receiving end device sends a paired video image with pairing information of the receiving end device to the sending end device through an image channel, where the paired video image is a video image with a preset resolution or a video image with a preset format;
step S23, the sending end equipment receives the paired video images, calculates according to the paired information in the paired video images, calculates the wireless network access point online information of the receiving end equipment, and then stores the wireless network access point online information;
step S3, judging the video image transmission mode according to the number of the receiving end devices needing to be networked and the number of the sending end devices needing to be networked:
if the number of the receiving end devices to be networked is one and the number of the sending end devices to be networked is multiple, the video image transmission mode is judged to be a many-to-one image transmission mode, and the step S4 is carried out;
if the number of the receiving end devices needing to be networked is multiple and the number of the sending end devices needing to be networked is one, judging that the video image transmission mode is a one-to-many image transmission mode, and entering a step S5;
step S4, setting the mode of a receiving end device needing to be networked as an SW mode to set the receiving end device as a WIFI wireless network access point, setting the mode of a sending end device needing to be networked as an SW mode to set the sending end device as a WIFI wireless access node, adding the wireless network access point online information of the receiving end device stored by the sending end device during pairing into the WIFI wireless network of the receiving end device needing to be networked, and receiving streaming video images of a plurality of sending end devices by the receiving end device through the WIFI wireless network;
step S5, setting the mode of receiving end equipment needing to be networked as an SP mode to set the receiving end equipment as a WIFI wireless access node, setting the mode of sending end equipment needing to be networked as an SP mode to set the sending end equipment as a WIFI wireless network access point, adding the wireless network access point online information of the sending end equipment into the WIFI wireless network of the sending end equipment needing to be networked by the receiving end equipment during pairing, and sending streaming video images to a plurality of receiving end equipment by the sending end equipment through the WIFI wireless network.
Preferably, in step S1, the Video channel is in any one of VGA, HDMI, DP, Type C and Video format.
Preferably, in the step S4, the receiving end device receiving the streaming video image of the sending end device specifically includes the following steps:
step S41, the receiving end equipment establishes online based on transmission control protocol with a plurality of sending end equipment through WIFI wireless network;
step S42, each sending end device encapsulates the video image input from the outside into a streaming video image packet with a preset format;
step S43, the sending end device sends the streaming video packet to the receiving end device;
in step S44, the receiving device parses the received streaming video packet into video images, and processes the parsed video images to form the streaming video images.
Preferably, the preset format is a real-time transport protocol.
Preferably, in step S5, the sending end device sending the streaming video image to the receiving end device specifically includes the following steps:
step S51, the sending end equipment establishes online based on transmission control protocol with a plurality of receiving end equipment through WIFI wireless network;
step S52, the sending end device encapsulates the video image input from the outside into a streaming video image packet with a preset format;
step S53, the sending end device sends the streaming video packet to the receiving end device;
in step S54, the receiving device parses the received streaming video packet into video images.
Preferably, the preset format is a real-time transport protocol.
The invention also provides a video image transmission system, which comprises a plurality of receiving end devices and a plurality of sending end devices, wherein the receiving end devices and the sending end devices realize the steps of the video image transmission method in any one of the above steps when communicating.
Preferably, the sending end device includes:
the transmitting terminal wireless network module is used for being in WIFI communication connection with the receiving terminal equipment, and can be set as a WIFI wireless access node or a WIFI wireless network access point;
a sending-end image input module, the sending-end image input module is provided with an I2C/DDC channel and an image channel, the sending-end image input module is used for receiving externally input video images through the image channel, and is used for being respectively connected with the I2C/DDC channel of the receiving-end device and the image channel of the receiving-end device to realize pairing, specifically: the method comprises the steps that extended display identification data are prestored in an I2C/DDC channel of a sending end image input module, paired video images sent by receiving end equipment are received, calculation is carried out according to the paired information in the paired video images, wireless network access point online information of the receiving end equipment is calculated, and then the wireless network access point online information is stored;
the sending terminal mode key is used for setting the working mode of the sending terminal wireless network module, and the sending terminal mode key is a key switch; when the sending end mode key is set to be in the SW mode, the receiving end wireless network module is set to be a WIFI wireless access node, and the sending end wireless network module is added into a WIFI wireless network of the receiving end equipment needing to be networked through wireless network access point online information of the receiving end equipment stored during pairing; when the sending end mode key is set to be in the SP mode, the receiving end wireless network module is set to be a WIFI wireless network access point, and the sending end wireless network module sends streaming video images to a plurality of receiving end devices through a WIFI wireless network;
the sending end wireless network module is respectively and electrically connected with the sending end image output module and the sending end mode key;
the receiving end device includes:
the receiving end wireless network module is used for being in WIFI communication connection with the sending end device and can be set as a WIFI wireless access node or a WIFI wireless network access point;
a receiving-end image output module, the receiving-end image output module is provided with an I2C/DDC channel and an image channel, the receiving-end image output module is used for outputting video images to an external display screen through the image channel, and is used for being respectively connected with the I2C/DDC channel of the sending-end device and the image channel of the sending-end device to realize pairing, specifically: the receiving end equipment obtains extended display identification data prestored in the sending end equipment through an I2C/DDC channel, calculates according to pairing information in the extended display identification data, calculates wireless network access point online information of the sending end equipment, and stores the wireless network access point online information; the receiving end equipment sends the paired video images with the pairing information of the receiving end equipment to the sending end equipment through an image channel; the extended display identification data comprises identity identification information and the pairing information, and the pairing video image is a video image with a preset resolution or a video image with a preset format;
the receiving end mode key is used for setting the working mode of the receiving end wireless network module, and the receiving end mode key is a key switch; when the receiving end mode key is set to be in the SW mode, the receiving end wireless network module is set to be a WIFI wireless network access point, and the receiving end wireless network module receives streaming video images of the plurality of sending end devices through a WIFI wireless network; when the receiving end mode key is set to be in the SP mode, the receiving end wireless network module is set to be a WIFI wireless access node, and the receiving end wireless network module is added into a WIFI wireless network of the sending end equipment needing networking through the wireless network access point online information of the sending end equipment stored during pairing;
the receiving end wireless network module is respectively and electrically connected with the receiving end image output module and the receiving end mode key.
The invention also provides a video image transmission device, which comprises a processor and a memory, wherein the processor is used for reading the program in the memory and executing the steps in the video image transmission method.
The present invention also provides a computer-readable storage medium storing a computer program comprising program instructions which, when executed by a processor, implement the steps in the video image transmission method as described in any one of the above.
Compared with the prior art, the video image transmission method, the video image transmission system, the video image transmission equipment and the computer readable storage medium of the invention comprise the following steps: step S1, connecting the I2C/DDC channel of the sink device with the I2C/DDC channel of the sender device, and connecting the video channel of the sink device with the video channel of the sender device; step S2, pairing the receiving terminal equipment and the sending terminal equipment; step S3, judging the video image transmission mode according to the number of the receiving end devices needing to be networked and the number of the sending end devices needing to be networked: if the number of the receiving end devices to be networked is one and the number of the sending end devices to be networked is multiple, the video image transmission mode is judged to be a many-to-one image transmission mode, and the step S4 is carried out; if the number of the receiving end devices needing to be networked is multiple and the number of the sending end devices needing to be networked is one, judging that the video image transmission mode is a one-to-many image transmission mode, and entering a step S5; step S4, setting the mode of a receiving end device needing to be networked as an SW mode to set the receiving end device as a WIFI wireless network access point, setting the mode of a sending end device needing to be networked as an SW mode to set the sending end device as a WIFI wireless access node, adding the wireless network access point online information of the receiving end device stored by the sending end device during pairing into the WIFI wireless network of the receiving end device needing to be networked, and receiving streaming video images of a plurality of sending end devices by the receiving end device through the WIFI wireless network; step S5, setting the mode of receiving end equipment needing to be networked as an SP mode to set the receiving end equipment as a WIFI wireless access node, setting the mode of sending end equipment needing to be networked as an SP mode to set the sending end equipment as a WIFI wireless network access point, adding the wireless network access point online information of the sending end equipment into the WIFI wireless network of the sending end equipment needing to be networked by the receiving end equipment during pairing, and sending streaming video images to a plurality of receiving end equipment by the sending end equipment through the WIFI wireless network. The steps automatically complete the online matching, the process does not need to additionally adopt a USB for pre-matching, and does not need to additionally pre-install an application program or a driver, and the matching process is automatically realized, so that the connection of online matching is easy to match and use. When one sending terminal device and a plurality of receiving terminal devices (namely one-to-many video image transmission modes) and a plurality of sending terminal devices and one receiving terminal device (namely many-to-one video image transmission modes) are applied, the video image transmission modes are automatically judged and automatically selected to realize video image transmission, and one-to-many or many-to-one video image transmission modes are dynamically switched; and preferably, a router does not need to be arranged between the sending end equipment and the receiving end equipment, the architecture is simple, and the user experience is good.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:
FIG. 1 is a block diagram of a video image transmission method according to the present invention;
FIG. 2 is a block diagram of the video image transmission method of the present invention in step S4;
FIG. 3 is a block diagram of the video image transmission method of the present invention in step S5;
FIG. 4 is a schematic diagram illustrating a connection relationship between related devices according to the video image transmission method of the present invention;
FIG. 5 is a schematic diagram illustrating a module connection relationship of a related system of the video image transmission method according to the present invention;
FIG. 6 is a schematic diagram illustrating a connection relationship between related devices in a many-to-one video image transmission mode according to the video image transmission method of the present invention;
FIG. 7 is a schematic diagram illustrating a connection relationship between one-to-many video image transmission mode related devices according to the video image transmission method of the present invention;
fig. 8 is a schematic structural diagram of a video image transmission apparatus according to the present invention.
[ detailed description ] embodiments
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terms "comprising" and "having," and any variations thereof, in the description and claims of this application and the description of the figures are intended to cover non-exclusive inclusions. The terms "first," "second," and the like in the description and claims of this application or the accompanying drawings are used for distinguishing between different objects and not for describing a particular order. Reference herein to "an embodiment or this implementation" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
The invention provides a video image transmission method. The invention provides a video image transmission system 100. The video image transmission method is applied to a video image transmission system 100, and the video image transmission system 100 includes a plurality of sending end devices 1 and a plurality of receiving end devices 2.
Referring to fig. 1-7, fig. 1 is a flow chart of a video image transmission method according to the present invention.
The video image transmission method comprises the following steps:
step S1, connect the I2C/DDC channel of the sink device 2 with the I2C/DDC channel of the sender device 1, and connect the video channel of the sink device 2 with the video channel of the sender device 1. .
The Video channel is in any one format of VGA, HDMI, DP, Type C and Video.
The I2C/DDC channel can be an I2C bus channel or a DDC channel. DDC is a communication interface between the sending-end device 1 and the receiving-end device 2, and is a structure derived for supporting the function of plug and play, and when the sending-end device 1 and the receiving-end device 2 both have the DDC function, the DDC has the best performance of the function of plug and play between them.
Step S2, pairing the receiving end device 2 and the sending end device 1. Wherein, the step S2 specifically includes the following sub-steps:
step S21, the receiving end device 2 obtains the extended display identification data pre-stored in the sending end device 1 through the I2C/DDC channel, calculates the wireless network access point online information of the sending end device 1 according to the pairing information in the extended display identification data, and stores the wireless network access point online information, where the extended display identification data includes the identification information and the pairing information.
Wherein the extended display identification data prestored in the sender apparatus 1 is prestored in the memory to which the I2C/DDC channel of the sender apparatus 1 is electrically connected, although it is not limited thereto as long as the extended display identification data storage device obtainable via the I2C/DDC channel is available.
Extended display identification data (EDID for short). EDID is a standard established by VESA for display identification data when a DDC display data channel communication protocol is established. EDID is stored in DDC memory in the display, when the host computer is connected with the display, the host computer can read EDID stored in DDC memory of the display by the DDC channel.
In this embodiment, the identification information is VSDB information (VSDB is short for the Vendor Specific Data Block) or a device Name (english Monitor Name) of the extended display identification Data.
And the wireless network Access Point (AP) online information is used for the online use of the equipment, wherein the wireless network Access Point indicates that a wireless network signal exists at the position and can be connected with a wireless network.
Step S22, the sink device 2 sends the paired video image with the pairing information of the sink device 2 to the sender device 1 through an image channel. The paired video images are video images with a preset resolution or video images with a preset format. In this embodiment, the video image with the preset resolution is a video image with a resolution different from that of a video image in normal transmission, for example, the resolution in normal transmission is 1080 × 720, and the preset resolution is 720 × 720 or 1080 × 480. The video image with the preset format inserts special information such as watermark, shape, color combination and the like into the transmitted video image.
Step S23, the sending end device 1 receives the paired video images, calculates the pairing information in the paired video images, calculates the wireless network access point online information of the receiving end device 2, and stores the wireless network access point online information.
Therefore, the operation of step S2 does not require additional module components such as USB or buttons, and does not require additional pre-installation of application programs or drivers, so that the user experience of the video transmission method is good.
Step S3, determining video image transmission mode according to the number of the receiving end devices 2 to be networked and the number of the sending end devices 1 to be networked:
if the number of the receiving end devices 2 to be networked is one and the number of the sending end devices 1 to be networked is multiple, determining that the video image transmission mode is a many-to-one image transmission mode, and entering step S4;
if the number of the receiving end devices 2 to be networked is multiple and the number of the sending end devices 1 to be networked is one, it is determined that the video image transmission mode is the one-to-many image transmission mode, and the process proceeds to step S5.
In this embodiment, it is determined that the number of the receiving end devices 2 that need to be networked and the number of the sending end devices 1 that need to be networked are determined as the devices paired in the steps S1 to S2, that is, the devices that have already completed pairing may be directly counted as the devices that need to be networked. Of course, the determination may be made by a status light or a built-in sensor respectively provided in the transmitting end device 1 and the receiving end device 2, and the sensor may sense the operating status of the transmitting end device 1 and the receiving end device 2, such as whether to power on, whether to prepare for networking, and the like.
Step S4, setting the mode of the receiving end device 2 to be networked as the SW mode to set the receiving end device 2 as the WIFI wireless network access point, setting the mode of the sending end device 1 to be networked as the SW mode to set the sending end device 1 as the WIFI wireless access node, adding the wireless network access point online information of the receiving end device 2 stored in the sending end device 1 during pairing to the WIFI wireless network of the receiving end device 2 to be networked, and receiving the streaming video images of the multiple sending end devices 1 by the receiving end device 2 through the WIFI wireless network.
The streaming video image is a transmission video set by a user according to the many-to-one image transmission mode or the one-to-many image transmission mode, and it should be noted that the streaming video image is a video stream commonly used in the art.
In this embodiment, the sending end device 1 and the receiving end device 2 are both provided with a mode key, and the mode key is a key switch. It should be noted that the sending end device 1 and the receiving end device 2 are both customized devices based on devices commonly used in the art, and are different from the commonly used devices in that whether the mode key and the corresponding program are provided or not is determined. The mode key is arranged on the receiving terminal device 2, the mode key is arranged on the sending terminal device 1, the receiving terminal device 2 can be directly set as a WIFI wireless network access point, and the sending terminal device 1 can be directly set as a WIFI wireless access node. This can need not be in send end equipment 1 with an extra router that increases between the receiving end equipment 2 can make the networking framework simple, easily operation, carries out software and hardware setting to the router when need not using, and more excellent can realize dynamic switch, and the networking is realized to the simple operation of user, and user experience is good.
In step S4, the receiving end device 2 specifically includes the following steps:
step S41, the receiving end device 2 establishes connection based on a Transmission Control Protocol (TCP) with the plurality of sending end devices 1 through the WIFI wireless network.
Among other things, the transmission control protocol is a connection-oriented, reliable, byte stream based transport layer communication protocol, defined by RFC 793 of the IETF. The transmission control protocol is intended to accommodate a layered protocol hierarchy that supports multiple network applications.
In step S42, each sending-end device 1 encapsulates the video image input from the outside into a streaming video image packet with a predetermined format.
In this embodiment, the preset format is a Real-time Transport Protocol (RTP).
Among them, the real-time transport protocol is a network transport protocol, which was published in RFC 1889 by the multimedia transport working group of IETF in 1996.
Step S43, the sending-end device 1 sends the streaming video packet to the receiving-end device 2.
In step S44, the receiving device 2 parses the received streaming video image packet into video images, and processes the parsed video images to form the streaming video images.
Step S5, setting the mode of the receiving end device 2 to be networked as an SP mode to set the receiving end device 2 as a WIFI wireless access node, setting the mode of the sending end device 1 to be networked as an SP mode to set the sending end device 1 as a WIFI wireless network access point, adding the wireless network access point online information of the sending end device 1 stored in the receiving end device 2 during pairing to the WIFI wireless network of the sending end device 1 to be networked, and sending the streaming video image to the receiving end devices 2 by the sending end device 1 through the WIFI wireless network.
In step S5, the sending-end device 1 sending the streaming video image to the receiving-end device 2 specifically includes the following steps:
step S51, the sending-end device 1 establishes an online connection based on a transmission control protocol with the plurality of receiving-end devices 2 through the WIFI wireless network.
Step S52, the sending-end device 1 encapsulates the video image input from the outside into a video image packet with a preset format.
In this embodiment, the preset format is a real-time transport protocol.
Step S53, the sending-end device 1 sends the video image packet to the receiving-end device 2.
In step S54, the receiving end device 2 parses the received video image packet into a video image.
It should be noted that, the two steps of step S4 and step S5 are in a parallel mode, and there is no logical precedence order, and the step S4 or the step S5 is selected by the judgment of step S3.
By integrating the steps, when one sending end device and a plurality of receiving end devices (namely one-to-many video image transmission modes) and a plurality of sending end devices and one receiving end device (namely many-to-one video image transmission modes) are applied, the video image transmission modes are automatically judged and automatically selected to realize video image transmission, and one-to-many or many-to-one video image transmission modes are dynamically switched; and preferably, a router does not need to be arranged between the sending end equipment and the receiving end equipment, the architecture is simple, and the user experience is good.
Referring to fig. 5-7, the video image transmission system 100 is applied to the video image transmission method. Specifically, the video image transmission system 100 includes a plurality of sending end devices 1, a plurality of receiving end devices 2, a video signal source 3, and a display 4. And the receiving end equipment 2 and the sending end equipment 1 realize the steps in the video image transmission method when communicating.
The signal source device 3 outputs a display signal to the display 4 for displaying. In order to enable the display 4 and the signal source device 3 to realize a wireless video image transmission function, the video image transmission method realizes communication connection by providing a sending end device 1 and a receiving end device 2 which can mutually transmit wireless data. And the communication connection is WIFI wireless connection.
The transmitting terminal device 1 includes a transmitting terminal wireless network module 11, a transmitting terminal image input module 12, a transmitting terminal mode key 13, and a transmitting terminal status light 14.
It should be noted that the transmitting-end wireless network module 11, the transmitting-end image input module 12, the transmitting-end mode key 13, and the transmitting-end status light 14 are all devices, modules, or components commonly used in the art, and a designer selects a relevant model according to actual needs, which is not described in detail herein.
The sending end wireless network module 11 is used for being in WIFI communication connection with the receiving end device 2. The sending-end wireless network module 11 may be set as a WIFI wireless access node or a WIFI wireless network access point.
The sending-end image input module 12 is provided with an I2C/DDC channel and an image channel. The sending-end image input module 12 is configured to receive an externally input video image through an image channel, and is configured to connect with an I2C/DDC channel of the receiving-end device 2 and an image channel of the receiving-end device 2 respectively to implement pairing, specifically: the I2C/DDC channel of the sending-end image input module 12 prestores extended display identification data, receives a paired video image sent by the receiving-end device 1, performs calculation according to the paired information in the paired video image, calculates wireless network access point online information of the receiving-end device 1, and stores the wireless network access point online information.
The sending-end mode key 13 is used for setting the working mode of the sending-end wireless network module 11. The sending end mode key 13 is a key switch. When the sending-end mode key 13 is set to the SW mode, the receiving-end wireless network module 21 is set to a WIFI wireless access node, and the sending-end wireless network module 13 adds the stored wireless network access point online information of the receiving-end device 1 to the WIFI wireless network of the receiving-end device 1 to be networked through pairing. When the sending-end mode key 13 is set to be in the SP mode, the receiving-end wireless network module 21 is set to be a WIFI wireless network access point, and the sending-end wireless network module 13 sends the streaming video images to the plurality of receiving-end devices 1 through the WIFI wireless network. The sending-end mode key 13 realizes dynamic switching of one-to-many or many-to-one video image transmission modes. Therefore, the video image transmission system 100 does not need to set a router between the sending end device 1 and the receiving end device 2 in terms of hardware architecture, and has simple architecture and good user experience.
The sending end state lamp 14 is used for displaying the online and pairing state of the WIFI wireless network. The sending end state lamp 14 can display the device state of the sending end device 1 needing networking and prompt the matching state of the WIFI wireless network of the user, so that the user is easy to use and the user experience is good.
The sending-end wireless network module 11 is electrically connected to the sending-end image output module and the sending-end mode key 13, respectively. The transmitting end status light 14 is electrically connected to the transmitting end wireless network module 11 and the transmitting end mode key 13, respectively.
The receiving end device 2 includes a receiving end wireless network module 21, a receiving end image output module 22, a receiving end mode button 23 and a receiving end status light 24.
It should be noted that the receiving-end wireless network module 21, the receiving-end image output module 22, the receiving-end mode button 23, and the receiving-end status light 24 are all devices, modules, or components commonly used in the art, and a designer selects a relevant model according to actual needs, which is not described in detail herein.
The receiving end wireless network module 21 is configured to be in WIFI communication connection with the sending end device 1. The receiving-end wireless network module 21 may be set as a WIFI wireless access node or a WIFI wireless network access point.
The receiving-end image output module 22 is provided with an I2C/DDC channel and an image channel. The receiving-end image output module 22 is configured to output a video image to an external display screen through an image channel, and is configured to connect to the I2C/DDC channel of the sending-end device 1 and the image channel of the sending-end device 1 respectively to implement pairing, specifically: the I2C/DDC channel of the sending-end image input module 22 prestores extended display identification data, receives a paired video image sent by the receiving-end device 1, performs calculation according to the paired information in the paired video image, calculates wireless network access point online information of the receiving-end device 1, and stores the wireless network access point online information.
The receiving end mode button 23 is used to set the working mode of the receiving end wireless network module 21. The receiving-end mode button 23 is a key switch. When the receiving-end mode button 23 is set to the SW mode, the receiving-end wireless network module 21 is set to a WIFI wireless network access point, and the receiving-end wireless network module 21 receives streaming video images of the plurality of sending-end devices 1 through a WIFI wireless network; when the receiving end mode button 23 is set to be in the SP mode, the receiving end wireless network module 21 is set to be a WIFI wireless access node, and the receiving end wireless network module 21 adds the wireless network access point online information of the sending end device 1 stored during pairing to a WIFI wireless network of the sending end device 1 to be networked. The receiving-end mode key 23 realizes dynamic switching of one-to-many or many-to-one video image transmission modes. Therefore, the video image transmission system 100 does not need to set a router between the sending end device 1 and the receiving end device 2 in terms of hardware architecture, and has simple architecture and good user experience.
The receiving end state lamp 24 is used for displaying the online and pairing state of the WIFI wireless network. The receiving end state lamp 24 can display the device state of the receiving end device 2 needing networking and prompt the matching state of the WIFI wireless network of the user, so that the user can use the device simply and the user experience is good.
The receiving-end wireless network module 21 is electrically connected to the receiving-end image output module 22 and the receiving-end mode button 23, respectively. The receiving end status light 24 is electrically connected to the receiving end wireless network module 21 and the receiving end mode key 23, respectively.
The invention also provides a video image transmission device 1000. Referring to fig. 8, fig. 8 is a schematic structural diagram of a video image transmission apparatus 1000 according to the present invention.
The video image transmission apparatus 1000 includes a processor 1001, a memory 1002, a network interface 1003 and a computer program stored in the memory 1002 and capable of running on the processor 1001, wherein the processor 1001 is configured to read the program in the memory 1002, and the processor 1001, when executing the computer program, implements the steps in the video image transmission method provided by the embodiment. That is, the processor 1001 executes the steps of the video image transmission method.
Specifically, the processor 1001 is configured to perform the following steps:
step S1, connecting the I2C/DDC channel of the sink device with the I2C/DDC channel of the sender device, and connecting the video channel of the sink device with the video channel of the sender device.
And step S2, pairing the receiving terminal equipment and the sending terminal equipment. Wherein, the step S2 specifically includes the following sub-steps:
step S21, the receiving end device obtains the extended display identification data pre-stored in the sending end device through the I2C/DDC channel, calculates according to the pairing information in the extended display identification data, calculates the wireless network access point online information of the sending end device, and stores the wireless network access point online information, where the extended display identification data includes the identification information and the pairing information.
Step S22, the receiving end device sends a paired video image with pairing information of the receiving end device to the sending end device through an image channel, where the paired video image is a video image with a preset resolution or a video image with a preset format.
And step S23, the sending end equipment receives the paired video images, calculates according to the paired information in the paired video images, calculates the wireless network access point online information of the receiving end equipment, and stores the wireless network access point online information.
Step S3, judging the video image transmission mode according to the number of the receiving end devices needing to be networked and the number of the sending end devices needing to be networked:
if the number of the receiving end devices to be networked is one and the number of the sending end devices to be networked is multiple, the video image transmission mode is judged to be a many-to-one image transmission mode, and the step S4 is carried out;
if the number of the receiving end devices to be networked is multiple and the number of the sending end devices to be networked is one, the video image transmission mode is determined to be a one-to-many image transmission mode, and the process goes to step S5.
Step S4, setting the mode of the receiving end device to be networked as an SW mode to set the receiving end device as a WIFI wireless network access point, setting the mode of the sending end device to be networked as an SW mode to set the sending end device as a WIFI wireless access node, adding the wireless network access point online information of the receiving end device to be networked into the WIFI wireless network of the receiving end device to be networked through the sending end device stored during pairing, and receiving streaming video images of a plurality of sending end devices by the receiving end device through the WIFI wireless network.
Step S5, setting the mode of receiving end equipment needing to be networked as an SP mode to set the receiving end equipment as a WIFI wireless access node, setting the mode of sending end equipment needing to be networked as an SP mode to set the sending end equipment as a WIFI wireless network access point, adding the wireless network access point online information of the sending end equipment into the WIFI wireless network of the sending end equipment needing to be networked by the receiving end equipment during pairing, and sending streaming video images to a plurality of receiving end equipment by the sending end equipment through the WIFI wireless network.
The video image transmission apparatus 1000 according to the embodiment of the present invention can implement each implementation manner in the video image transmission method embodiment, and has corresponding beneficial effects, and for avoiding repetition, details are not repeated here.
It is noted that only 1001-1003 with components are shown, but it is understood that not all of the illustrated components are required and that more or fewer components may be implemented instead. As will be understood by those skilled in the art, the video image transmission device 1000 is a device capable of automatically performing numerical calculation and/or information processing according to a preset or stored instruction, and the hardware includes, but is not limited to, a microprocessor, an Application Specific Integrated Circuit (ASIC), a Programmable gate array (FPGA), a Digital Signal Processor (DSP), an embedded device, and the like.
The memory 1002 includes at least one type of readable storage medium including a flash memory, a hard disk, a multimedia card, a card-type memory (e.g., SD or DX memory, etc.), a Random Access Memory (RAM), a Static Random Access Memory (SRAM), a read-only memory (ROM), an electrically erasable programmable read-only memory (EEPROM), a programmable read-only memory (PROM), a magnetic memory, a magnetic disk, an optical disk, etc. In some embodiments, the storage 1002 may be an internal storage unit of the video image transmission apparatus 1000, such as a hard disk or a memory of the video image transmission apparatus 1000. In other embodiments, the memory 1002 may also be an external storage device of the video image transmission device 1000, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), or the like, provided on the video image transmission device 1000. Of course, the memory 1002 may also include both an internal storage unit and an external storage device of the video image transmission apparatus 1000. In this embodiment, the memory 1002 is generally used for storing an operating system installed in the video image transmission apparatus 1000 and various types of application software, such as program codes of a video image transmission method of the video image transmission apparatus 1000. The memory 1002 may also be used to temporarily store various types of data that have been output or are to be output.
The processor 1001 may be a Central Processing Unit (CPU), controller, microcontroller, microprocessor, or other data Processing chip in some embodiments. The processor 1001 is generally used to control the overall operation of the video image transmission apparatus 1000. In this embodiment, the processor 1001 is configured to run the program codes stored in the memory 1002 or process data, for example, the program codes of the video image transmission method of the video image transmission apparatus 1000.
The network interface 1003 may include a wireless network interface or a wired network interface, and the network interface 1003 is generally used to establish a communication connection between the video image transmission apparatus 1000 and other electronic apparatuses.
The present invention further provides a computer-readable storage medium, wherein a computer program is stored in the computer-readable storage medium, the computer program includes program instructions, and the program instructions, when executed by the processor 1001, implement the steps in the video image transmission method, and can achieve the same technical effects, and are not repeated herein to avoid repetition.
It will be understood by those skilled in the art that all or part of the processes in the video image transmission method for implementing the video image transmission apparatus 100 according to the embodiments may be implemented by a computer program to instruct related hardware, and the program may be stored in a computer readable storage medium, and when executed, may include processes according to the embodiments of the methods. The storage medium may be a magnetic disk, an optical disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), or the like.
The present embodiment mentioned in the examples of the present invention is for convenience of description. The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention, and it is therefore to be understood that the invention is not limited by the scope of the appended claims.
Compared with the prior art, the video image transmission method, the video image transmission system, the video image transmission equipment and the computer readable storage medium of the invention comprise the following steps: step S1, connecting the I2C/DDC channel of the sink device with the I2C/DDC channel of the sender device, and connecting the video channel of the sink device with the video channel of the sender device; step S2, pairing the receiving terminal equipment and the sending terminal equipment; step S3, judging the video image transmission mode according to the number of the receiving end devices needing to be networked and the number of the sending end devices needing to be networked: if the number of the receiving end devices to be networked is one and the number of the sending end devices to be networked is multiple, the video image transmission mode is judged to be a many-to-one image transmission mode, and the step S4 is carried out; if the number of the receiving end devices needing to be networked is multiple and the number of the sending end devices needing to be networked is one, judging that the video image transmission mode is a one-to-many image transmission mode, and entering a step S5; step S4, setting the mode of a receiving end device needing to be networked as an SW mode to set the receiving end device as a WIFI wireless network access point, setting the mode of a sending end device needing to be networked as an SW mode to set the sending end device as a WIFI wireless access node, adding the wireless network access point online information of the receiving end device stored by the sending end device during pairing into the WIFI wireless network of the receiving end device needing to be networked, and receiving streaming video images of a plurality of sending end devices by the receiving end device through the WIFI wireless network; step S5, setting the mode of receiving end equipment needing to be networked as an SP mode to set the receiving end equipment as a WIFI wireless access node, setting the mode of sending end equipment needing to be networked as an SP mode to set the sending end equipment as a WIFI wireless network access point, adding the wireless network access point online information of the sending end equipment into the WIFI wireless network of the sending end equipment needing to be networked by the receiving end equipment during pairing, and sending streaming video images to a plurality of receiving end equipment by the sending end equipment through the WIFI wireless network. The steps automatically complete the online matching, the process does not need to additionally adopt a USB for pre-matching, and does not need to additionally pre-install an application program or a driver, and the matching process is automatically realized, so that the connection of online matching is easy to match and use. When one sending terminal device and a plurality of receiving terminal devices (namely one-to-many video image transmission modes) and a plurality of sending terminal devices and one receiving terminal device (namely many-to-one video image transmission modes) are applied, the video image transmission modes are automatically judged and automatically selected to realize video image transmission, and one-to-many or many-to-one video image transmission modes are dynamically switched; and preferably, a router does not need to be arranged between the sending end equipment and the receiving end equipment, the architecture is simple, and the user experience is good.
While the foregoing is directed to embodiments of the present invention, it will be understood by those skilled in the art that various changes may be made without departing from the spirit and scope of the invention.

Claims (10)

1. A video image transmission method is applied to a video image transmission system, the video image transmission system comprises a plurality of receiving end devices and a plurality of sending end devices, and the method is characterized by comprising the following steps:
step S1, connecting the I2C/DDC channel of the sink device with the I2C/DDC channel of the sender device, and connecting the video channel of the sink device with the video channel of the sender device;
step S2, pairing the receiving terminal equipment and the sending terminal equipment; wherein, the step S2 specifically includes the following sub-steps:
step S21, the receiving end equipment obtains the extended display identification data pre-stored in the sending end equipment through an I2C/DDC channel, calculates according to the pairing information in the extended display identification data, calculates the wireless network access point online information of the sending end equipment, and then stores the wireless network access point online information, wherein the extended display identification data comprises identity identification information and the pairing information;
step S22, the receiving end device sends a paired video image with pairing information of the receiving end device to the sending end device through an image channel, where the paired video image is a video image with a preset resolution or a video image with a preset format;
step S23, the sending end equipment receives the paired video images, calculates according to the paired information in the paired video images, calculates the wireless network access point online information of the receiving end equipment, and then stores the wireless network access point online information;
step S3, judging the video image transmission mode according to the number of the receiving end devices needing to be networked and the number of the sending end devices needing to be networked:
if the number of the receiving end devices to be networked is one and the number of the sending end devices to be networked is multiple, the video image transmission mode is judged to be a many-to-one image transmission mode, and the step S4 is carried out;
if the number of the receiving end devices needing to be networked is multiple and the number of the sending end devices needing to be networked is one, judging that the video image transmission mode is a one-to-many image transmission mode, and entering a step S5;
step S4, setting the mode of a receiving end device needing to be networked as an SW mode to set the receiving end device as a WIFI wireless network access point, setting the mode of a sending end device needing to be networked as an SW mode to set the sending end device as a WIFI wireless access node, adding the wireless network access point online information of the receiving end device stored by the sending end device during pairing into the WIFI wireless network of the receiving end device needing to be networked, and receiving streaming video images of a plurality of sending end devices by the receiving end device through the WIFI wireless network;
step S5, setting the mode of receiving end equipment needing to be networked as an SP mode to set the receiving end equipment as a WIFI wireless access node, setting the mode of sending end equipment needing to be networked as an SP mode to set the sending end equipment as a WIFI wireless network access point, adding the wireless network access point online information of the sending end equipment into the WIFI wireless network of the sending end equipment needing to be networked by the receiving end equipment during pairing, and sending streaming video images to a plurality of receiving end equipment by the sending end equipment through the WIFI wireless network.
2. The method for transmitting Video images according to claim 1, wherein in the step S1, the Video channel is in any one of VGA, HDMI, DP, Type C and Video format.
3. The method for transmitting video images according to claim 1, wherein in the step S4, the step of the receiving device receiving the streaming video images of the sending device includes the following steps:
step S41, the receiving end equipment establishes online based on transmission control protocol with a plurality of sending end equipment through WIFI wireless network;
step S42, each sending end device encapsulates the video image input from the outside into a streaming video image packet with a preset format;
step S43, the sending end device sends the streaming video packet to the receiving end device;
in step S44, the receiving device parses the received streaming video packet into video images, and processes the parsed video images to form the streaming video images.
4. The method according to claim 3, wherein the predetermined format is real-time transport protocol.
5. The method for transmitting video images according to claim 1, wherein in the step S5, the step of sending the streaming video images to the receiving device by the sending device specifically includes the steps of:
step S51, the sending end equipment establishes online based on transmission control protocol with a plurality of receiving end equipment through WIFI wireless network;
step S52, the sending end device encapsulates the video image input from the outside into a streaming video image packet with a preset format;
step S53, the sending end device sends the streaming video packet to the receiving end device;
in step S54, the receiving device parses the received streaming video packet into video images.
6. The method according to claim 5, wherein the predetermined format is real-time transport protocol.
7. A video image transmission system, characterized in that the video image transmission system comprises a plurality of receiving end devices and a plurality of sending end devices, and the receiving end devices and the sending end devices implement the steps of the video image transmission method according to any one of claims 1 to 6 when communicating with each other.
8. The video image transmission system according to claim 7,
the transmitting end device includes:
the transmitting terminal wireless network module is used for being in WIFI communication connection with the receiving terminal equipment, and can be set as a WIFI wireless access node or a WIFI wireless network access point;
a sending-end image input module, the sending-end image input module is provided with an I2C/DDC channel and an image channel, the sending-end image input module is used for receiving externally input video images through the image channel, and is used for being respectively connected with the I2C/DDC channel of the receiving-end device and the image channel of the receiving-end device to realize pairing, specifically: the method comprises the steps that extended display identification data are prestored in an I2C/DDC channel of a sending end image input module, paired video images sent by receiving end equipment are received, calculation is carried out according to the paired information in the paired video images, wireless network access point online information of the receiving end equipment is calculated, and then the wireless network access point online information is stored;
the sending terminal mode key is used for setting the working mode of the sending terminal wireless network module, and the sending terminal mode key is a key switch; when the sending end mode key is set to be in the SW mode, the receiving end wireless network module is set to be a WIFI wireless access node, and the sending end wireless network module is added into a WIFI wireless network of the receiving end equipment needing to be networked through wireless network access point online information of the receiving end equipment stored during pairing; when the sending end mode key is set to be in the SP mode, the receiving end wireless network module is set to be a WIFI wireless network access point, and the sending end wireless network module sends streaming video images to a plurality of receiving end devices through a WIFI wireless network;
the sending end wireless network module is respectively and electrically connected with the sending end image output module and the sending end mode key;
the receiving end device includes:
the receiving end wireless network module is used for being in WIFI communication connection with the sending end device and can be set as a WIFI wireless access node or a WIFI wireless network access point;
a receiving-end image output module, the receiving-end image output module is provided with an I2C/DDC channel and an image channel, the receiving-end image output module is used for outputting video images to an external display screen through the image channel, and is used for being respectively connected with the I2C/DDC channel of the sending-end device and the image channel of the sending-end device to realize pairing, specifically: the receiving end equipment obtains extended display identification data prestored in the sending end equipment through an I2C/DDC channel, calculates according to pairing information in the extended display identification data, calculates wireless network access point online information of the sending end equipment, and stores the wireless network access point online information; the receiving end equipment sends the paired video images with the pairing information of the receiving end equipment to the sending end equipment through an image channel; the extended display identification data comprises identity identification information and the pairing information, and the pairing video image is a video image with a preset resolution or a video image with a preset format;
the receiving end mode key is used for setting the working mode of the receiving end wireless network module, and the receiving end mode key is a key switch; when the receiving end mode key is set to be in the SW mode, the receiving end wireless network module is set to be a WIFI wireless network access point, and the receiving end wireless network module receives streaming video images of the plurality of sending end devices through a WIFI wireless network; when the receiving end mode key is set to be in the SP mode, the receiving end wireless network module is set to be a WIFI wireless access node, and the receiving end wireless network module is added into a WIFI wireless network of the sending end equipment needing networking through the wireless network access point online information of the sending end equipment stored during pairing;
the receiving end wireless network module is respectively and electrically connected with the receiving end image output module and the receiving end mode key.
9. A video image transmission apparatus comprising a processor and a memory, wherein the processor is configured to read a program in the memory and execute the steps of the video image transmission method according to any one of claims 1 to 6.
10. A computer-readable storage medium, in which a computer program is stored, the computer program comprising program instructions which, when executed by a processor, implement the steps in the video image transmission method according to any one of claims 1 to 6.
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