CN112565843A - Projection screen control method, device, all-in-one machine and storage medium based on DLNA - Google Patents
Projection screen control method, device, all-in-one machine and storage medium based on DLNA Download PDFInfo
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- CN112565843A CN112565843A CN202011400130.6A CN202011400130A CN112565843A CN 112565843 A CN112565843 A CN 112565843A CN 202011400130 A CN202011400130 A CN 202011400130A CN 112565843 A CN112565843 A CN 112565843A
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- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000004590 computer program Methods 0.000 claims description 6
- 230000008569 process Effects 0.000 abstract description 3
- 238000004891 communication Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
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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]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/4104—Peripherals receiving signals from specially adapted client devices
- H04N21/4122—Peripherals receiving signals from specially adapted client devices additional display device, e.g. video projector
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- 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
- G06F3/1454—Digital output to display device ; Cooperation and interconnection of the display device with other functional units involving copying of the display data of a local workstation or window to a remote workstation or window so that an actual copy of the data is displayed simultaneously on two or more displays, e.g. teledisplay
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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]
- H04N21/40—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
- H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
- H04N21/43615—Interfacing a Home Network, e.g. for connecting the client to a plurality of peripherals
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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]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
- H04N21/4508—Management of client data or end-user data
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/06—Authentication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Theoretical Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Databases & Information Systems (AREA)
- Computer Security & Cryptography (AREA)
- Controls And Circuits For Display Device (AREA)
Abstract
The invention provides a DLNA (digital living network alliance) -based screen projection control method, a DLNA-based screen projection control device, an integrated machine and a storage medium, wherein the DLNA-based screen projection control device comprises: the NFC module is used for identifying the NFC card and reading information in the NFC card; the storage module is used for storing the information in the NFC card; the DLNA module stores a DLNA program, and after the DLNA program is operated, the DLNA module sends broadcast to other equipment in the same local area network through a UPnP standard and receives connection requests of other equipment; and the control module is used for judging whether the information of the equipment sending the connection request is the same as the information stored in the storage module and determining whether to approve the connection request according to the judgment result so as to control whether the DLNA module receives the data sent by the equipment sending the connection request. The invention limits the screen projection equipment, thereby ensuring that the screen projection content can be managed and controlled. The screen can be projected without external devices such as an external mouse, the operation process is simple and convenient, and the user experience is improved.
Description
Technical Field
The invention relates to the technical field of screen projection control, in particular to a screen projection control method, device, all-in-one machine and storage medium based on DLNA.
Background
With the rapid development of electronic technology, the electronic screen projection technology is more and more widely used. In many public places, large-screen display devices are used for delivering advertisements, news, entertainment information and the like for viewing. For example, some hotels and restaurants have large-sized display screens hung on the walls for playing advertisements, movies and other entertainment information. Most of the video projection is completed by using a DLNA protocol. DLNA is a protocol that can realize data transmission in a wireless network, and video and the like in terminal devices such as computers and mobile phones can be pushed to display devices supporting the DLNA protocol through the protocol. However, DNLA is a public protocol, any mobile phone or computer can transmit content to the display device, and if the user is unsupervised, the user may play some programs with bad influence in public, so many businesses disable DLNA or even WiFi function to prevent video from being launched on the large display screen.
There are some outbreaks 27524c even wifi when DLNA is directly forbidden. Because the DLNA is not used for delivery, the remote controller or the mouse is required to be used for operation, the remote controller or the mouse is troublesome to use, a specific application is generally required to be opened to input some information, and the information is synchronized to a computer or a mobile phone to be used, so that the process is complicated.
Disclosure of Invention
The invention aims to provide a DLNA-based screen projection control method, a DLNA-based screen projection control device, an integrated machine and a storage medium, and can solve the problem that the played content cannot be controlled and controlled due to the fact that screen projection is not limited in the prior art.
The purpose of the invention is realized by the following technical scheme:
in a first aspect, the present invention provides a DLNA-based screen projection control method, including the following steps:
step 1, writing an IP address and an MAC address of a signal source terminal into an NFC card;
step 2, enabling the NFC card to be close to an NFC identification area of the all-in-one machine, and staying for a first fixed time period;
step 3, the all-in-one machine reads the information in the NFC card, stores the information in the NFC card and starts a DLNA program;
step 4, the signal source terminal scans the integrated machine through the DLNA program and sends a connection request to the integrated machine;
step 5, the integrated machine obtains the IP address and the MAC address of the equipment sending the connection request, judges whether the IP address and the MAC address are consistent with the information stored in the storage module, refuses the connection request if the IP address and the MAC address are not consistent with the information stored in the storage module, and turns to the step 6 if the IP address and the MAC address are not consistent with the information stored in the storage module;
and 6, allowing the all-in-one machine to agree with the connection request, receiving the data sent by the signal source terminal and putting the data.
Further, the first fixed time period is at least 1S.
Further, the second fixed time period is set to 100 ms.
Furthermore, a storage module, an NFC module and a DLNA module are arranged in the all-in-one machine; after the NFC module identifies the NFC card, reading information in the NFC card; the storage module stores the information in the NFC card, and the DLNA module starts a DLNA program.
In a second aspect, the invention provides a DLNA-based screen projection control device, which comprises an NFC module, a control module, a DLNA module and a storage module; wherein:
the NFC module is used for identifying the NFC card and reading information in the NFC card;
the storage module is used for storing the information in the NFC card read by the NFC module;
the DLNA module stores a DLNA program, and after the DLNA program is operated, the DLNA module sends broadcast to other equipment in the same local area network through a UPnP standard and receives connection requests of other equipment;
and the control module is used for judging whether the information of the equipment sending the connection request is the same as the information stored in the storage module and determining whether to approve the connection request according to the judgment result so as to control whether the DLNA module receives the data sent by the equipment sending the connection request.
Further, the information in the NFC card is an IP address and an MAC address of the signal source device.
Further, the information of the device sending the connection request is an IP address and a MAC address of the device.
In a third aspect, the invention provides an all-in-one machine, which comprises the DLNA-based screen projection control device.
Furthermore, the all-in-one machine further comprises a display screen, and the display screen is used for releasing video data of the signal source terminal allowed by the DLNA-based screen release control device.
In a fourth aspect, the present invention provides a storage medium storing a computer program, wherein the computer program is executed to execute the DLNA-based screen projection control method.
The DLNA-based screen projection control method, the DLNA-based screen projection control device, the DLNA-based screen projection control all-in-one machine and the storage medium limit screen projection equipment, so that screen projection content can be managed and controlled. The screen projection operation can be completed without external devices such as an external mouse, the whole operation process is simple and convenient, and the user experience is improved.
Drawings
FIG. 1 is a step diagram of a DLNA-based screen projection control method according to the present invention;
fig. 2 is a schematic diagram of a DLNA-based projection control apparatus according to the present invention.
Detailed Description
The embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.
The embodiments of the present disclosure are described below with specific examples, and other advantages and effects of the present disclosure will be readily apparent to those skilled in the art from the disclosure in the specification. It is to be understood that the described embodiments are merely illustrative of some, and not restrictive, of the embodiments of the disclosure. The disclosure may be embodied or carried out in various other specific embodiments, and various modifications and changes may be made in the details within the description without departing from the spirit of the disclosure. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.
The DLNA-based screen projection control method comprises the following steps of:
step 1, writing the IP address and the MAC address of the signal source terminal into the NFC card.
Information to be written into the NFC card is determined, which includes a Media Access Control Address (MAC Address) and an IP Address of a signal source (PC or mobile phone). The computer or the mobile phone is opened, the IP and the MAC of the equipment are found, and the equipment is written into an NFC card (Near Field Communication) through an NFC reader-writer.
And 2, enabling the NFC card to be close to an NFC identification area of a display screen of the all-in-one machine, and staying for a first fixed time period.
The display screen is internally provided with an NFC module, and an NFC identification area of the display screen is generally arranged at the bottom of the display screen. A background program runs in the display screen, and whether an NFC card exists in the NFC identification area is detected by the NFC module every second fixed time period (for example, 100 ms). In the present embodiment, the first fixed period of time is set to at least 1S. The first fixed period of time and the second fixed period of time may be set to other values as needed.
And 3, reading the information in the NFC card by the all-in-one machine, storing the information in the NFC card and starting a DLNA program.
The all-in-one machine is internally provided with a storage module, an NFC module and a DLNA module, when the NFC module identifies an NFC card, information in the NFC card is read, the storage module stores the information in the NFC card, and the DLNA module starts a DLNA program.
The information in the NFC card is the data of the IP address and MAC address of the signal source terminal. When the NFC module detects the NFC card, the display screen starts a DLNA program, and after the DLNA program is started, only signal source terminal equipment in the same local area network can scan the display screen supporting the DLNA protocol. DLNA supports the UPnP (Universal Plug and Play) specification, a network is added to a display screen, a UPnP discovery protocol allows the display screen to advertise the service of the display screen to other devices (including a signal source terminal) in the same local area network, and after the display screen is started, the display screen automatically sends a broadcast to the local area network to inform the other devices in the local area network.
And 4, scanning the integrated machine by the signal source terminal through a DLNA program, and sending a connection request to the integrated machine.
After a large screen starts a DLNA program, broadcasting is sent through a UPnP standard, when a computer or a mobile phone supports the DLNA function, the DLNA function of the computer or the mobile phone is started, if the broadcasting of the large screen is received in the same local area network, a DLNA display device is known through the UPNP standard, the computer or the mobile phone analyzes the broadcasting to obtain device information of the large screen, including name, type, IP and the like, then the device is clicked to send a connection request to the large screen, and pictures or videos can be transmitted after the request passes.
And 5, the all-in-one machine obtains the IP address and the MAC address of the equipment sending the connection request, judges whether the IP address and the MAC address are consistent with the information stored in the storage module, refuses the connection request if the IP address and the MAC address are not consistent with the information, and turns to the step 6 if the IP address and the MAC address are not consistent with the information.
In the prior art, a PC or a mobile phone can transmit a video or a picture to a large display screen after clicking a connection in a general case, but the invention limits a connected signal source terminal. When the display screen is connected with a PC or a mobile phone by DLNA, a specific port number is used, generally udp: 1900 to transfer some information, such as device descriptors. The background program of the display screen monitors the information of a specific port number through the wireshark, acquires a data packet once in 1 second, and if the IP and the MAC address contained in the source receiving the information are not recorded previously, the access of the IP can be forbidden through modifying the configuration of the system/core/rootdir/etc/hosts, so that the DLNA program has no response.
And 6, allowing the all-in-one machine to agree with the connection request, receiving the data sent by the signal source terminal and putting the data.
The screen projection control device based on the DLNA comprises an NFC module, a control module, a DLNA module and a storage module. Wherein:
the NFC module is used for identifying the NFC card and reading information in the NFC card.
The storage module is used for storing the information in the NFC card read by the NFC module.
The DLNA module stores a DLNA program, and after the DLNA program is operated, the DLNA module sends broadcast to other equipment in the same local area network through the UPnP standard and receives connection requests of other equipment.
And the control module is used for judging whether the information of the equipment sending the connection request is the same as the information stored in the storage module and determining whether to approve the connection request according to the judgment result so as to control whether the DLNA module receives the data sent by the equipment sending the connection request.
And the information in the NFC card is the IP address and the MAC address of the signal source equipment. The information of the device that sends the connection request is the IP address and MAC address of the device.
The all-in-one machine comprises a projection screen control device based on DLNA and a display screen. The screen projection control device based on the DLNA comprises an NFC module, a control module, a DLNA module and a storage module.
The NFC module is used for identifying the NFC card and reading information in the NFC card.
The storage module is used for storing the information in the NFC card read by the NFC module.
The DLNA module stores a DLNA program, and after the DLNA program is operated, the DLNA module sends broadcast to other equipment in the same local area network through the UPnP standard and receives connection requests of other equipment.
And the control module is used for judging whether the information of the equipment sending the connection request is the same as the information stored in the storage module and determining whether to approve the connection request according to the judgment result so as to control whether the DLNA module receives the data sent by the equipment sending the connection request.
And the information in the NFC card is the IP address and the MAC address of the signal source equipment. The information of the device that sends the connection request is the IP address and MAC address of the device.
The display screen is used for playing video data sent by the signal source terminal.
A storage medium having a computer program stored therein, the computer program being executable to perform a method comprising:
step 1, writing an IP address and an MAC address of a signal source terminal into an NFC card;
step 2, enabling the NFC card to be close to an NFC identification area of the all-in-one machine, and staying for a first fixed time period;
step 3, the all-in-one machine reads the information in the NFC card, stores the information in the NFC card and starts a DLNA program;
step 4, the signal source terminal scans the integrated machine through the DLNA program and sends a connection request to the integrated machine;
step 5, the integrated machine obtains the IP address and the MAC address of the equipment sending the connection request, judges whether the IP address and the MAC address are consistent with the information stored in the storage module, refuses the connection request if the IP address and the MAC address are not consistent with the information stored in the storage module, and turns to the step 6 if the IP address and the MAC address are not consistent with the information stored in the storage module;
and 6, allowing the all-in-one machine to agree with the connection request, receiving the data sent by the signal source terminal and putting the data.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The above description is for the purpose of illustrating embodiments of the invention and is not intended to limit the invention, and it will be apparent to those skilled in the art that any modification, equivalent replacement, or improvement made without departing from the spirit and principle of the invention shall fall within the protection scope of the invention.
Claims (10)
1. The DLNA-based screen projection control method is characterized by comprising the following steps of:
step 1, writing an IP address and an MAC address of a signal source terminal into an NFC card;
step 2, enabling the NFC card to be close to an NFC identification area of the all-in-one machine, and staying for a first fixed time period;
step 3, the all-in-one machine reads the information in the NFC card, stores the information in the NFC card and starts a DLNA program;
step 4, the signal source terminal scans the integrated machine through the DLNA program and sends a connection request to the integrated machine;
step 5, the integrated machine obtains the IP address and the MAC address of the equipment sending the connection request, judges whether the IP address and the MAC address are consistent with the information stored in the storage module, refuses the connection request if the IP address and the MAC address are not consistent with the information stored in the storage module, and turns to the step 6 if the IP address and the MAC address are not consistent with the information stored in the storage module;
and 6, allowing the all-in-one machine to agree with the connection request, receiving the data sent by the signal source terminal and putting the data.
2. The DLNA-based screen projection control method of claim 1, wherein the first fixed period of time is at least 1S.
3. The DLNA-based screen projection control method of claim 1, wherein the second fixed period of time is set to 100 ms.
4. The DLNA-based screen projection control method according to claim 1, wherein the integrated machine is internally provided with a storage module, an NFC module and a DLNA module; after the NFC module identifies the NFC card, reading information in the NFC card; the storage module stores the information in the NFC card, and the DLNA module starts a DLNA program.
5. The DLNA-based screen projection control device is characterized by comprising an NFC module, a control module, a DLNA module and a storage module; wherein:
the NFC module is used for identifying the NFC card and reading information in the NFC card;
the storage module is used for storing the information in the NFC card read by the NFC module;
the DLNA module stores a DLNA program, and after the DLNA program is operated, the DLNA module sends broadcast to other equipment in the same local area network through a UPnP standard and receives connection requests of other equipment;
and the control module is used for judging whether the information of the equipment sending the connection request is the same as the information stored in the storage module and determining whether to approve the connection request according to the judgment result so as to control whether the DLNA module receives the data sent by the equipment sending the connection request.
6. The DLNA-based screen projection control device according to claim 5, wherein the information in the NFC card is an IP address and a MAC address of a signal source device.
7. The DLNA-based screen projection control device according to claim 5, wherein the information of the device sending the connection request is an IP address and a MAC address of the device.
8. A combined machine, characterized by comprising the DLNA-based screen projection control device of any one of claims 5 to 6.
9. The all-in-one machine according to claim 8, further comprising a display screen, wherein the display screen is used for projecting video data of the signal source terminal allowed by the DLNA-based projection control device.
10. A storage medium having a computer program stored therein, wherein the computer program is executed to execute the DLNA-based screen projection control method according to any one of claims 1 to 4.
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| CN202011400130.6A CN112565843A (en) | 2020-12-02 | 2020-12-02 | Projection screen control method, device, all-in-one machine and storage medium based on DLNA |
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| CN202011400130.6A CN112565843A (en) | 2020-12-02 | 2020-12-02 | Projection screen control method, device, all-in-one machine and storage medium based on DLNA |
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| CN113507708A (en) * | 2021-06-25 | 2021-10-15 | 深圳乐播科技有限公司 | Screen projection method and screen projection system |
| WO2023130853A1 (en) * | 2022-01-06 | 2023-07-13 | 海信视像科技股份有限公司 | Display device and display method for prompt information |
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