CN108810594B - Remote screen projection method, device and system - Google Patents

Remote screen projection method, device and system Download PDF

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Publication number
CN108810594B
CN108810594B CN201810421168.8A CN201810421168A CN108810594B CN 108810594 B CN108810594 B CN 108810594B CN 201810421168 A CN201810421168 A CN 201810421168A CN 108810594 B CN108810594 B CN 108810594B
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multimedia resource
playing
equipment
target
playing device
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CN108810594A (en
Inventor
杨羽
金明
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Xinhuasan Intelligent Terminal Co ltd
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New H3C Technologies 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]
    • H04N21/40—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
    • 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
    • H04N21/422—Input-only peripherals, i.e. input devices connected to specially adapted client devices, e.g. global positioning system [GPS]
    • H04N21/42204—User interfaces specially adapted for controlling a client device through a remote control device; Remote control devices therefor
    • 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
    • H04N21/435—Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport 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]
    • H04N21/40—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
    • H04N21/462—Content or additional data management, e.g. creating a master electronic program guide from data received from the Internet and a Head-end, controlling the complexity of a video stream by scaling the resolution or bit-rate based on the client capabilities

Abstract

The application provides a remote screen projection method, a device and a system, which relate to the field of remote screen projection, and the method is applied to multimedia resource management equipment and comprises the following steps: receiving a search instruction sent by mobile equipment; the search instruction is used for informing the multimedia resource management equipment to search the multimedia resource playing equipment in the local area network; determining target multimedia resource playing equipment from at least one searched multimedia resource playing equipment according to the searching instruction and a mapping relation between the mobile equipment and the target multimedia resource playing equipment which is established in advance; and controlling the target multimedia resource playing equipment to play the multimedia resource. By the method, the mobile equipment can control the multimedia resource playing equipment to remotely cast the screen when the mobile equipment and the multimedia resource playing equipment are not in the same local area network.

Description

Remote screen projection method, device and system
Technical Field
The application relates to the technical field of remote control, in particular to a remote screen projection method and device.
Background
The technology of the digital living NETWORK ALLIANCE (DIGITAL LIVING NETWORK ALLIANCE, DLNA) can realize that multimedia resources accessed or played by a terminal device are delivered to a multimedia resource playing device, so as to realize the sharing of the multimedia resources.
At present, a home is usually equipped with mainstream electronic devices such as a mobile device, a smart television and a home cloud disk, which integrate DLNA technology. In life, users usually realize multimedia resource sharing in families based on mainstream electronic equipment equipped in the families, and life pleasure is increased. In the process of sharing the multimedia resources at home, because the DLNA technology is a protocol (also referred to as SSDP protocol) based on the same lan, when sharing, a user first needs to connect the mobile device, the smart tv, and the home cloud disk to the same lan, and then the user can access the multimedia resources on the home cloud disk through the home cloud disk APP in the mobile device, and screen-cast the multimedia resources in the multimedia server played on the mobile device to the multimedia resource playing device, so that the multimedia resources are shared at home, and user experience is improved.
However, in the process of sharing multimedia resources, the mobile device, the smart television and the home cloud disk, which integrate the DLNA technology in the home, are required to be in the same local area network. If the user is not at home, so that the mobile device, the smart television and the home cloud disk are not in the same local area network, the mobile device cannot discover and control the multimedia resource playing device based on the SSDP protocol, and cannot control the screen projection of the multimedia resource to the multimedia resource playing device through the mobile device.
Disclosure of Invention
In view of this, an object of the embodiments of the present application is to provide a remote screen-projecting method, apparatus and system, which can achieve the purpose that when a mobile device and a multimedia resource playing device are not in the same local area network, the mobile device can also control the multimedia resource playing device to project a screen remotely.
In a first aspect, an embodiment of the present application provides a remote screen projection method, which is applied to a multimedia resource management device, and includes:
receiving a search instruction sent by mobile equipment; the search instruction is used for informing the multimedia resource management equipment to search the multimedia resource playing equipment in the local area network;
determining target multimedia resource playing equipment from at least one searched multimedia resource playing equipment according to the searching instruction and a mapping relation between the mobile equipment and the target multimedia resource playing equipment which is established in advance;
and controlling the target multimedia resource playing equipment to play the multimedia resource.
In a second aspect, an embodiment of the present application further provides a remote screen projection method, including:
the mobile equipment sends a search instruction to the multimedia resource management equipment; the search instruction is used for informing the multimedia resource management equipment to search the multimedia resource playing equipment in the local area network;
the multimedia resource management equipment determines target multimedia resource playing equipment from at least one searched multimedia resource playing equipment according to the search instruction and a mapping relation between the mobile equipment and the target multimedia resource playing equipment which is established in advance;
and the multimedia resource management equipment controls the target multimedia resource playing equipment to play the multimedia resources.
In a third aspect, an embodiment of the present application provides a remote screen projection device, including:
the receiving module is used for receiving a search instruction sent by the mobile equipment; the search instruction is used for informing the multimedia resource management equipment to search the multimedia resource playing equipment in the local area network;
a determining module, configured to determine a target multimedia resource playing device from at least one searched multimedia resource playing device according to the search instruction and a mapping relationship between the mobile device and the target multimedia resource playing device that is pre-established;
and the control module is used for controlling the target multimedia resource playing equipment to play the multimedia resources.
In a fourth aspect, an embodiment of the present application provides a remote screen projection system, including: the system comprises a mobile device, a multimedia resource management device and a multimedia resource playing device;
the mobile equipment is used for sending a search instruction to the multimedia resource management equipment; the search instruction is used for informing the multimedia resource management equipment to search the multimedia resource playing equipment in the local area network;
the multimedia resource management device is used for determining a target multimedia resource playing device from at least one searched multimedia resource playing device according to the search instruction and a mapping relation between the mobile device and the target multimedia resource playing device which is established in advance;
the multimedia resource management device is also used for controlling the target multimedia resource playing device to play the multimedia resource.
According to the remote screen projection method, the device and the system, the mobile equipment is adopted to control the multimedia resource management equipment to search the multimedia resource playing equipment in the local area network where the multimedia resource management equipment is located, and the multimedia resource management equipment selects a target multimedia resource playing equipment from at least one searched multimedia resource playing equipment to play the multimedia resource. In the process, the mobile equipment directly controls the multimedia resource management equipment, and the multimedia resource management equipment directly controls the multimedia resource playing equipment, so that the mobile equipment does not need to directly control the multimedia resource playing equipment, and the aim that the mobile equipment can also control the multimedia resource playing equipment to remotely screen when the mobile equipment and the multimedia resource playing equipment are not in the same local area network is fulfilled.
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
Fig. 1 shows a schematic structural diagram of an application scenario of a remote screen projection method provided in an embodiment of the present application.
Fig. 2 shows a flowchart of a remote screen projection method provided by an embodiment of the present application.
Fig. 3 shows a flowchart of another remote screen projection method provided by an embodiment of the present application.
Fig. 4 shows a flowchart of another remote screen projection method provided by an embodiment of the present application.
Fig. 5 is a flowchart illustrating another remote screen projection method provided by an embodiment of the present application.
Fig. 6 shows a flowchart of another remote screen projection method provided by an embodiment of the present application.
Fig. 7 shows a flowchart of another remote screen projection method provided by an embodiment of the present application.
Fig. 8 shows an application scenario diagram of a remote screen projection method provided by an embodiment of the present application.
Fig. 9 shows a schematic structural diagram of a remote screen projection device provided by an embodiment of the present application.
Fig. 10 shows a schematic structural diagram of a computer device 40 provided in an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present application without making any creative effort, shall fall within the protection scope of the present application.
Fig. 1 and fig. 9 respectively show a schematic structural diagram of an application scenario of a remote screen projection method provided in an embodiment of the present application. As shown in fig. 1, includes a mobile device 10, a multimedia asset management device 20, and a multimedia asset playback device 30. The DLNA technology is integrated in both the multimedia resource management device 20 and the multimedia resource playing device 30, and both are pre-accessed to the same local area network; the mobile device 10 is pre-installed with a mobile phone software (APP) for accessing the multimedia resource management device 20, and the mobile device 10 can access and control the multimedia resource management device 20 through the installed APP. Here, the mobile device 10 may access and control the multimedia resource management device 20 through the installed APP after accessing the lan, or may access and control the multimedia resource management device 20 through the installed APP after connecting to a 2G (2-Generation wireless telephone technology, second Generation mobile communication technology specification), a 3G (3rd-Generation, third Generation mobile communication technology), a 4G (the 4th Generation mobile communication technology, fourth Generation mobile communication technology), or a 5G (5th-Generation, fifth Generation mobile communication technology) network.
Here, the local area network accessed by the mobile device 10 is different from the local area networks accessed by the multimedia resource management device 20 and the multimedia resource playback device 30, and in order to distinguish the two local area networks, the local area network accessed by the multimedia resource management device 20 and the multimedia resource playback device 30 is defined as a first local area network, and the local area network accessed by the mobile device 10 is defined as a second local area network.
The multimedia resource playing device 30 is a device for playing multimedia resources obtained from a home NETWORK, and here may be a Personal Computer (PC), a smart television, and an intelligent mobile device (such as a smart phone and a tablet computer) that support digital living NETWORK ALLIANCE (DIGITAL LIVING NETWORK ALLIANCE, DLNA).
The multimedia resource management device 20 may be a storage device for storing multimedia resources, and here may be a storage device for accessing multimedia resources through a local area network, such as a home cloud disk.
The mobile device 10 is used for coordinating actions between the multimedia resource playing device 30 and the multimedia resource management device 20, and here may be an intelligent mobile device, such as a smart phone, a tablet computer, and so on.
For convenience of the following description, in the following embodiments, the mobile device 10 is a smart phone a, the multimedia resource management device 20 is a home cloud disk B, and the multimedia resource playing device 30 is a smart television C.
As shown in fig. 9, if the home cloud disk B has a WIreless routing function, the home cloud disk B starts WIreless-Fidelity (WiFi), broadcasts a Service Set Identifier (SSID) of the home cloud disk B, and the smart television C searches for the SSID of the home cloud disk B, accesses the SSID of the home cloud disk B through the SSID, and accesses the WIreless WiFi of the home cloud disk B and the home cloud disk B into the same local area network (i.e., the first local area network). If the family cloud disk B does not have the wireless routing function, the family cloud disk B and the smart television C are both connected with the wireless WiFi of the same router so as to be accessed into the same local area network (namely, the first local area network).
The smart phone a can be pre-connected to a second local area network, and then the home cloud disk B is accessed and controlled through a pre-installed APP of the home cloud disk B. Alternatively, the mobile device 10 may connect to the 2G/3G/4G/5G network in advance and then access control the home cloud disk B through the installed APP.
As shown in fig. 2, a remote screen projection method provided for a first embodiment of the present application is applied to a multimedia resource management device 20, and the method includes:
s101, receiving a search instruction sent by mobile equipment; the search instruction is used for informing the multimedia resource management equipment to search the multimedia resource playing equipment in the local area network.
In the embodiment of the application, after a user triggers screen projection on mobile equipment, the mobile equipment firstly sends a search instruction to a third-party server corresponding to multimedia resource management equipment, the third-party server forwards the search instruction to the multimedia resource management equipment bound on an APP (application) of the user on the mobile equipment after receiving the search instruction, and the search instruction is used for informing the multimedia resource management equipment to search for multimedia resource playing equipment in a local area network where the multimedia resource management equipment is located.
Here, the user may trigger screen projection when the mobile device is playing the multimedia resource, or may select the multimedia resource in the mobile device and trigger screen projection.
S102, determining the target multimedia resource playing device from at least one searched multimedia resource playing device according to the searching instruction and the mapping relation between the mobile device and the target multimedia resource playing device which is established in advance.
Here, after receiving the search instruction forwarded by the third-party server, the multimedia resource management device broadcasts, in the first local area network, device search information (i.e., a search request message) based on the SSDP protocol, so as to search for the multimedia resource playing device in the first local area network.
In this embodiment of the present application, after receiving the search information of the playing device, a multimedia resource playing device in the first local area network returns playing device information of itself to the multimedia resource management device, and if the multimedia resource management device receives the playing device information from at least one multimedia resource playing device, the multimedia resource management device determines a target multimedia resource playing device from the at least one multimedia resource playing device according to the playing device information and a mapping relationship between the mobile device and the target multimedia resource playing device, which is established in advance, and controls the target multimedia resource playing device to play the multimedia resource.
In the embodiment of the application, for the first screen projection of the user, the mapping relationship between the mobile device and the target multimedia resource playing device may be configured in advance, or may be established based on the target multimedia resource playing device selected by the user on the mobile device. Aiming at the non-first screen projection of the user, the mapping relation between the mobile equipment and the target multimedia resource playing equipment is maintained based on the previous screen projection result.
In the embodiment of the application, the search instruction sent by the mobile device carries the screen-casting time information of the user, and the multimedia resource management device can determine whether the user casts the screen for the first time according to the screen-casting time information of the user carried in the search instruction.
Here, if the multimedia resource management device does not receive playback device information, which is returned by the multimedia resource playback device and is directed to the playback device search information, within the preset time period, it is determined that the search is overtime, and at this time, the multimedia resource management device sends a response message to the mobile device, where the response message is used to prompt that the mobile device does not find an available multimedia resource playback device.
S103, controlling the target multimedia resource playing equipment to play the multimedia resource.
In the embodiment of the application, when a user throws a screen for the first time, the multimedia resource management device selects a target multimedia resource playing device with different methods, and the multimedia resource management device receives screen throwing information from the mobile device and multimedia resource identification information which the user wants to play at different time. Corresponding to the method for establishing the mapping relation based on the target multimedia resource playing device selected by the user on the mobile device, after the user selects the target multimedia resource playing device, the mobile device sends a selection instruction to the multimedia resource management device, wherein the selection instruction carries screen projection information and multimedia resource identification information which the user wants to play. Corresponding to the preset mapping relation, the search instruction sent by the mobile equipment carries screen projection information and multimedia resource identification information which the user wants to play.
Or, in the method for establishing the mapping relationship based on the target multimedia resource playing device selected by the user on the mobile device, the search instruction sent by the mobile device directly carries the screen-projecting information and the multimedia resource identification information that the user wants to play.
And the multimedia resource management equipment controls the target multimedia resource playing equipment to play the multimedia resource corresponding to the multimedia resource identification information according to the screen projection information and the multimedia resource identification information which the user wants to play.
As shown in fig. 3, the method for establishing a mapping relationship between a mobile device and a target multimedia resource playing device based on a target multimedia resource playing device selected by a user for a first screen projection of the user includes:
s201, sending playing device information returned by at least one multimedia resource playing device in the local area network to the mobile device.
Here, the playback device information may be a Uniform Resource Locator (URL) address or a device name. In order to facilitate the selection of the user, the device name is used in the embodiment of the present application.
In a specific embodiment, the multimedia resource management device receives playback device information, that is, a first response message of a broadcasted search request message, where the first response message carries a Location field, and the Location field includes a URL address described by a root device; the root device refers to a multimedia resource playing device returning the first response message.
The multimedia resource management equipment analyzes a first response message after receiving the first response message returned by the multimedia resource playing equipment to obtain a URL address of root equipment description, and then uses the URL address in the first response message to request an equipment description document of the multimedia resource playing equipment;
after successfully receiving the second response message, the multimedia resource management device analyzes the second response message to obtain a device description document in the second response message, wherein the device description document comprises: the device name of the multimedia resource playing device, the service supported by the multimedia resource playing device, the URL address of the service description document for obtaining a certain service, and the control URL address (i.e., the control URL address) for controlling a certain service.
After obtaining the device description document, the multimedia resource management device sends the device names of the multimedia resource playing devices to the mobile device, so that the user can select the multimedia resource playing devices on the mobile device.
S202, receiving a selection instruction sent by the mobile device based on the playing device information, wherein the selection instruction comprises an instruction for the mobile device to select a target multimedia resource playing device from the at least one multimedia resource playing device.
Here, the mobile device receives and displays device names of the multimedia resource playing devices searched by the multimedia resource management device, the user selects from the device names, when the user selects one of the device names, the mobile device sends a selection instruction of the device name to the multimedia resource management device, and the multimedia resource management device determines the multimedia resource playing device selected by the user as the target multimedia resource playing device.
In a specific embodiment, the number of target multimedia resource playing devices selected by the user may be one or multiple.
S203, based on the selection instruction, establishing a mapping relation between the mobile device and the target multimedia resource playing device.
Here, after the user selects the target multimedia resource playing device, the playing device information of the target multimedia resource playing device is recorded, and a mapping relationship between the mobile device and the playing device information of the target multimedia resource playing device is established, so that after receiving the playing device information returned by at least one multimedia resource playing device, the multimedia resource management device determines the target multimedia resource playing device from the at least one multimedia resource playing device according to the mapping relationship between the mobile device and the playing device information of the target multimedia resource playing device, and controls the target multimedia resource playing device to play the multimedia resource.
In the method that the user needs to select each screen, if the available multimedia resource playing device in the local area network where the multimedia resource management device is located does not change, the user is required to reselect each screen, which brings complicated operation experience to the user. Based on this, the method further comprises:
and recording the standard playing equipment information of the target multimedia resource playing equipment.
Here, when the user first casts the screen or the user uses the replaced multimedia resource playing device to cast the screen, the multimedia resource management device maintains the standard playing device information of the currently used multimedia resource playing device, so that the user does not need to select again when casting the screen next time, and the target multimedia resource playing device can be directly controlled to cast the screen. Here, the number of target multimedia asset playback devices maintained is the same as the number of multimedia playback devices used at the last screen projection.
In a specific embodiment, after receiving a selection instruction from a mobile device, a multimedia resource management device stores standard playback device information of a target multimedia resource playback device selected by the selection instruction.
After the multimedia resource management device maintains the standard playing device information of the target multimedia resource playing device, if a screen projecting instruction sent by a user through the mobile device is received again, the multimedia resource management device can determine that the user does not project a screen for the first time currently according to the screen projecting times information of the user carried in the screen projecting instruction, at this time, the multimedia resource management device can broadcast the playing device searching information in the local area network according to the screen projecting instruction, and then automatically select and determine the target multimedia resource playing device from at least one multimedia resource playing device returning the playing device information based on the maintained standard playing device information of the target multimedia resource playing device.
Here, the screen-casting instruction corresponding to the user screen-casting again carries screen-casting times information of the user, notification information for notifying the multimedia resource management device to search for the multimedia resource playing device in the local area network, screen-casting information, multimedia resource identification information (i.e., a multimedia resource address), and playing progress information.
As shown in fig. 4, the determining a target multimedia asset playing device from the at least one multimedia asset playing device according to the playing device information and a mapping relationship between the mobile device and the target multimedia asset playing device, which is established in advance, further includes:
s301, comparing the playing device information aiming at the playing device search information returned by at least one multimedia resource playing device with the recorded standard playing device information.
S302, if the playing device information returned by the at least one multimedia resource playing device contains the target playing device information which is the same as the standard playing device information, determining that the multimedia resource playing device corresponding to the target playing device information is the target multimedia resource playing device.
Here, after receiving the selection instruction of the mobile device, the multimedia resource management device records standard playing device information (such as the device name of the target multimedia resource playing device) for maintaining the target multimedia resource playing device selected by the user, and when the user next casts a screen, the multimedia resource management device searches for an available multimedia resource playing device in the local area network, receives playing device information returned by the available multimedia resource playing device, compares the returned playing device information with the maintained standard playing device information, and if the target multimedia resource playing device exists in the available multimedia resource playing device, the multimedia resource management device can directly control the target multimedia resource playing device to play the multimedia resource without the user selecting again.
In the embodiment of the application, the multimedia resource management equipment maintains whether a user throws a screen for the first time through an APP of the multimedia resource management equipment, when the APP is started, a first-time trigger screen throwing key of the user is the first screen throwing of the user, and in the first screen throwing process, the multimedia resource management equipment returns an equipment name list to the multimedia resource playing equipment so as to provide target multimedia resource playing equipment selected by the user for screen throwing use, and meanwhile, the multimedia resource management equipment maintains playing equipment information of the target multimedia resource playing equipment selected by the user; if the currently started APP does not exit, the user triggers the screen projection key again, and the user does not need to select the target multimedia resource playing equipment used for screen projection again in the screen projection process.
After the user first casts the screen, if the user wants to replace the target multimedia resource playing device that casts the screen, the user can trigger the target multimedia resource playing device that replaces the screen on the APP. The specific process is as follows, the user clicks a 'screen-switching device-replacing' button in a screen-switching control interface on the APP, the mobile terminal sends a screen-switching device-replacing instruction to the multimedia resource management device, the multimedia resource management device receives the screen-switching device-replacing instruction, searches for available multimedia resource playing devices in the local area network, then sends playing device information returned by the available multimedia resource playing devices to the mobile terminal, the user selects the playing device, and when the user selects the replaced multimedia resource playing device, the multimedia resource playing device maintains standard playing device information of the replaced multimedia resource playing device. Here, the multimedia resource management device may delete standard playback device information of a target multimedia resource playback device that is maintained earlier, before maintaining the standard playback device information of the replaced multimedia resource playback device; the standard playing device information of the target multimedia resource playing device maintained in advance can be covered by the replaced standard playing device information of the multimedia resource playing device.
By maintaining the standard playing device information of the target multimedia resource playing device selected by the user, when the user throws a screen next time, the target multimedia resource playing device which throws the screen can be automatically selected based on the maintained standard playing device information, the user does not need to select again, the complicated operation of the user is omitted, and the user experience is improved.
When a user first puts on the screen, the selection instruction sent by the mobile device also carries screen-throwing information and multimedia resource identification information of a multimedia resource to be played by the multimedia resource playing device, and the multimedia resource management device controls the target multimedia resource playing device to put on the screen by the screen-throwing information and the multimedia resource identification information, as shown in fig. 5, step 103, the controlling the target multimedia resource playing device to play the multimedia resource includes:
s401, sending a playing control instruction to the target multimedia resource playing device according to the screen projection information and the multimedia resource identification information carried in the selection instruction.
In the embodiment of the application, after receiving a selection instruction sent by a mobile device, a multimedia resource management device searches a screen-casting service and a URL address of a service description document of the screen-casting service from a device description document to which a device name selected by the selection instruction belongs, then requests the service description document corresponding to the screen-casting service from the URL address of the service description document of the screen-casting service, and a multimedia resource playing device returns the screen-casting service description document in an XML format.
The multimedia Resource management device analyzes the description document of the screen projection service to obtain the control operation supported by the screen projection service, such as setting the functions (i.e. actions) and parameters defined by basic operations of a multimedia Resource Uniform Resource Identifier (URI) to be projected, playing, pausing, finishing screen projection, fast forwarding and the like.
After receiving the selection instruction, the multimedia resource management device assembles a control message according to the screen-casting information and the multimedia resource identification information carried in the selection instruction, wherein the action type is SetAVTransportURI, the parameter CurrentURI is the multimedia resource URI to be cast, and after assembling the content of the play control message (namely, the play control instruction), the multimedia resource management device sends the play control instruction to a ControlURL address corresponding to the screen-casting service of the target multimedia resource play device.
S402, after receiving a multimedia resource request message which is sent by the target multimedia resource playing device and carries the multimedia resource identification information, returning the stored multimedia resource corresponding to the multimedia resource identification information to the target multimedia resource playing device, so that the target multimedia resource playing device plays the multimedia resource corresponding to the multimedia resource identification information.
In the embodiment of the application, after the target multimedia resource playing device analyzes the playing control instruction, a third response message that the screen projection is successful is returned to the multimedia resource management device, then the target multimedia resource playing device requests the multimedia resource management device to download the multimedia resource corresponding to the CurrentURI through a HyperText Transfer Protocol (HTTP), the multimedia resource management device returns the stored multimedia resource corresponding to the multimedia resource identification information to the target multimedia resource playing device, and the target multimedia resource playing device starts to play the multimedia resource returned by the target multimedia resource playing device after receiving the requested multimedia resource.
And if the target multimedia resource management equipment receives the third response message that the screen projection of the target multimedia resource playing equipment is successful, returning a first notification message to the mobile equipment, wherein the first notification message is used for notifying the mobile equipment that the screen projection is successful. And if the target multimedia resource playing equipment returns a fourth response message of screen projection control failure, returning a second notification message to the mobile equipment, wherein the second notification message is used for notifying the mobile equipment of screen projection failure, and the second notification message notifies the mobile equipment of screen projection failure by presenting a user screen projection failure prompt.
In the embodiment of the application, after a user selects a target multimedia resource playing device from the mobile device, the mobile device enters a screen projection control interface, the user sends a screen projection control message to the home cloud disk B through different control operations, and the screen projection control message can also control operations of pausing, starting, finishing screen projection, fast forwarding, replacing the screen projection device and the like of the multimedia resource. In the embodiment of the application, the processes of pausing, starting, finishing screen projection, fast forwarding, replacing screen projection equipment and the like are similar to the screen projection control process; wherein, actions corresponding to pause, start, finish screen projection and fast forward are pause, play, stop and seek respectively.
In the remote screen projection method provided by the embodiment of the application, the selection instruction further carries playing progress information of a multimedia resource corresponding to the multimedia resource identification information; after receiving the multimedia resource request message carrying the multimedia resource identification information sent by the target multimedia resource playing device, the step 402 further includes:
and sending the playing progress information of the multimedia resource corresponding to the multimedia resource identification information to the target multimedia resource playing equipment, so that the target multimedia resource playing equipment plays the multimedia resource corresponding to the multimedia resource identification information according to the playing progress information.
Here, the multimedia resource management device may send the playing progress information of the multimedia resource to the target multimedia resource playing device before or after "returning the stored multimedia resource corresponding to the multimedia resource identification information to the target multimedia resource playing device", or may send the stored multimedia resource corresponding to the multimedia resource identification information to the target multimedia resource playing device together with the step "returning the stored multimedia resource corresponding to the multimedia resource identification information to the target multimedia resource playing device", and the target multimedia resource playing device plays the multimedia resource corresponding to the multimedia resource identification information according to the playing progress information after acquiring the multimedia resource and the playing progress information of the multimedia resource.
As shown in fig. 6, in this embodiment of the application, in order to enable the mobile device to know the playing status of the target multimedia resource playing device in real time, step 103, after controlling the target multimedia resource playing device to play the multimedia resource, the method further includes:
s501, receiving the playing state information of the multimedia resource sent by the target multimedia resource playing device.
Here, the playing state information of the multimedia resource may be a playing progress, a playing duration, a playing definition, and the like.
S502, forwarding the playing state information of the multimedia resource to the mobile equipment so that the mobile equipment can display the playing state information of the multimedia resource.
In the embodiment of the application, when the multimedia resource playing device plays the multimedia resource corresponding to the multimedia resource identification information, the current playing situation is sent to the multimedia resource management device, and the multimedia resource management device receives and analyzes the current playing situation and forwards the current playing situation to the mobile device, so that the mobile device presents the playing situation of the multimedia resource to a user for viewing. Therefore, even if the mobile equipment does not play the multimedia resource corresponding to the multimedia resource identification information, the user can still know the current playing condition of the target multimedia resource playing equipment in real time through the mobile equipment, and the user experience is improved.
According to the remote screen projection method provided by the embodiment of the application, the mobile equipment is adopted to control the multimedia resource management equipment to search the multimedia resource playing equipment in the local area network where the multimedia resource management equipment is located, and the multimedia resource management equipment selects a target multimedia resource playing equipment from at least one searched multimedia resource playing equipment to play the multimedia resource. In the process, the mobile equipment directly controls the multimedia resource management equipment, and the multimedia resource management equipment directly controls the multimedia resource playing equipment, so that the mobile equipment does not need to directly control the multimedia resource playing equipment, and the aim that the mobile equipment can also control the multimedia resource playing equipment to remotely screen when the mobile equipment and the multimedia resource playing equipment are not in the same local area network is fulfilled.
As shown in fig. 7, there is further provided a remote screen projection method for the second embodiment of the present application, including:
s601, the mobile equipment sends a search instruction to the multimedia resource management equipment; the search instruction is used for informing the multimedia resource management equipment to search the multimedia resource playing equipment in the local area network;
s602, the multimedia resource management device determines the target multimedia resource playing device from at least one searched multimedia resource playing device according to the search instruction and the mapping relation between the mobile device and the target multimedia resource playing device which is established in advance.
S603, the multimedia resource management equipment controls the target multimedia resource playing equipment to play the multimedia resources.
According to the remote screen projection method provided by the embodiment of the application, the mobile equipment is adopted to control the multimedia resource management equipment to search the multimedia resource playing equipment in the local area network where the multimedia resource management equipment is located, and the multimedia resource management equipment selects a target multimedia resource playing equipment from at least one searched multimedia resource playing equipment to play the multimedia resource. In the process, the mobile equipment directly controls the multimedia resource management equipment, and the multimedia resource management equipment directly controls the multimedia resource playing equipment, so that the mobile equipment does not need to directly control the multimedia resource playing equipment, and the aim that the mobile equipment can also control the multimedia resource playing equipment to remotely screen when the mobile equipment and the multimedia resource playing equipment are not in the same local area network is fulfilled.
A third embodiment of the present application describes a remote screen projection method with reference to fig. 8, where a mobile device 10 is taken as a smart phone a, a multimedia resource management device is taken as a home cloud disk B, where the home cloud disk B has a wireless routing function, and a multimedia resource playing device is taken as an intelligent television C, and the specific process is as follows:
1. the intelligent television C is connected with the wireless WiFi of the family cloud disk B, and the intelligent television C and the family cloud disk B are located in the same local area network.
2. And starting DLNA functions of the family cloud disk B and the smart television C, logging in an APP of the family cloud disk B by the smart phone A, and accessing multimedia resources stored in the family cloud disk B through the APP.
3. The smart phone A sends a search instruction to inform the home cloud disk B of searching the smart television C in the local area network where the home cloud disk B is located, the home cloud disk B broadcasts a search request message based on an SSDP protocol after receiving the search instruction, the smart television C returns a first response message to the home cloud disk B after receiving the search request message of the home cloud disk B, the first response message carries a Location field, the field contains a URL address described by root equipment, and the equipment refers to the smart television C which returns the first response message. If the home cloud disk B does not receive the first response message within the preset time length, determining that the search is overtime, and at the moment, informing the smart phone A that the available equipment prompt is not found by the home cloud disk B.
4. After receiving the first response message of the smart television C, the home cloud disk B uses the URL address in the first response message to request the device description document of the smart television C, the smart television C responds to the request and returns a second response message to the home cloud disk B, and the second response message carries the device description document in the XML form.
5. And the home cloud disk B receives the second response message and analyzes the equipment description document in the second response message, wherein the equipment description document comprises the equipment name of the intelligent television C, the service supported by the intelligent television C, the URL address of the service description document of a certain service and the ControlURL address for controlling the certain service. And then the home cloud disk B returns the device name of the smart television C to the smart phone A, the smart phone A is displayed to the user for watching, and the user selects the target smart television C from the device names through the smart phone A.
6. After receiving the selection instruction of the smart phone A, the home cloud disk B queries the screen-casting service matched with the device name and the URL address of the service description document corresponding to the screen-casting service according to the device name of the target smart television C selected by the selection instruction, then requests the service description document corresponding to the screen-casting service of the target smart television C from the URL address of the service description document corresponding to the screen-casting service, and the smart television C returns the screen-casting service description document in an XML format.
7. And the family cloud disk B analyzes the description document of the screen-casting service to obtain the control operation supported by the screen-casting service, such as the action and the parameter defined by the basic operations of setting the URI of the multimedia resource to be screen-cast, playing, pausing, finishing screen-casting, fast forwarding and the like.
8. The selection instruction of the smart phone A carries screen projection information and multimedia resource identification information, a control message is assembled according to the screen projection information and the multimedia resource identification information carried in the selection instruction, wherein the action type is SetAVransportURI, the parameter CurrentURI is the multimedia resource URI to be projected, after the content of the play control message (namely the play control instruction) is assembled, the play control instruction is sent to a ControlURL address corresponding to the screen projection service of target multimedia resource playing equipment, the smart television C returns a third response message of screen projection success to the home cloud disk B after analyzing the play control instruction, then the smart television C requests the home cloud disk B to download the multimedia resource corresponding to the CurrentURI through HTTP, and accordingly the smart television C starts to play the multimedia resource returned by the home cloud disk B. After receiving the screen-casting success response message of the smart television C, the home cloud disk B informs the smart phone A of screen casting success, if the smart television C returns that screen casting control fails, the home cloud disk B informs the smart phone A of screen casting control failure, and a screen casting failure prompt message of a user is presented.
9. After receiving a selection instruction of the smart phone A, the home cloud disk B informs the home cloud disk B to record and maintain the smart television C, then the smart phone A enters a screen projection control interface, a user sends a screen projection control message to the home cloud disk B through different control operations, the screen projection control message comprises operations of pausing, starting, finishing screen projection, fast forwarding, replacing screen projection equipment and the like, wherein actions corresponding to pausing, starting, finishing screen projection and fast forwarding are respectively pause, play, stop and seek.
10. After receiving the message of selecting the target smart television C by the user, the home cloud disk B records the related information of maintaining the target smart television C, when the user casts a screen next time, the home cloud disk B searches available smart televisions C nearby, the search result is compared with the playing device information of the maintained smart televisions C, if the target smart televisions C exist, the target smart televisions C are directly controlled to cast the screen without the need of the user to select the screen again, if the user wants to replace the screen casting device, the screen casting device is clicked to replace in the screen casting control interface, and after receiving the message of replacing the screen casting device, the home cloud disk B searches available smart televisions C nearby and selects the smart televisions C for the user.
11. After the smart television C plays multimedia resources, the current playing condition is sent to the home cloud disk B in real time, the home cloud disk B receives and analyzes the multimedia resources and forwards the multimedia resources to the smart phone A, and the smart phone A displays the multimedia resources to a user.
By the remote screen-casting method, when the mobile equipment and the multimedia resource playing equipment are not in the same local area network, the mobile equipment can also control the multimedia resource playing equipment to cast a screen remotely.
As shown in fig. 9, a remote screen projection apparatus for a third embodiment of the present application is further provided, which is configured to perform the remote screen projection method in the first embodiment, and the apparatus includes:
the receiving module 11 is configured to receive a search instruction sent by a mobile device; the search instruction is used for informing the multimedia resource management equipment to search the multimedia resource playing equipment in the local area network;
a determining module 12, configured to determine, according to the search instruction and a mapping relationship between the mobile device and a target multimedia resource playing device, the target multimedia resource playing device from at least one searched multimedia resource playing device;
and the control module 13 is configured to control the target multimedia resource playing device to play the multimedia resource.
Optionally, in the remote screen projection device provided in the embodiment of the present application, the determining module 13 is specifically configured to:
sending the search information of the playing equipment in the local area network based on the search instruction;
receiving playing device information which is returned by at least one multimedia resource playing device in the local area network and aims at the searching information of the playing device;
and determining target multimedia resource playing equipment from the at least one multimedia resource playing equipment according to the playing equipment information and the mapping relation between the mobile equipment and the target multimedia resource playing equipment which is established in advance.
Optionally, the remote screen projection device provided in the embodiment of the present application further includes:
a sending module, configured to send playback device information returned by at least one multimedia resource playback device in the local area network to the mobile device;
the receiving module is further configured to receive a selection instruction sent by the mobile device based on the playing device information, where the selection instruction includes an instruction for the mobile device to select a target multimedia resource playing device from the at least one multimedia resource playing device;
and the establishing module is used for establishing the mapping relation between the mobile equipment and the target multimedia resource playing equipment based on the selection instruction.
Optionally, the remote screen projection device provided in the embodiment of the present application further includes:
the recording module is used for recording the standard playing equipment information of the target multimedia resource playing equipment;
the determining module 13 is specifically configured to:
comparing playing device information which is returned by at least one multimedia resource playing device and aims at the searching information of the playing device with the recorded target playing device information;
if the playing device information returned by the at least one multimedia resource playing device contains the target playing device information which is the same as the standard playing device information, the multimedia resource playing device corresponding to the target playing device information is determined to be the target multimedia resource playing device.
Optionally, in the remote screen projection device provided in the embodiment of the present application, the selection instruction carries screen projection information and multimedia resource identification information; the control module 13 is specifically configured to:
sending a playing control instruction to the target multimedia resource playing device according to the screen projection information and the multimedia resource identification information carried in the selection instruction;
and after receiving a multimedia resource request message which is sent by the target multimedia resource playing device and carries the multimedia resource identification information, returning the stored multimedia resource corresponding to the multimedia resource identification information to the target multimedia resource playing device, so that the target multimedia resource playing device plays the multimedia resource corresponding to the multimedia resource identification information.
Optionally, in the remote screen projection device provided in this embodiment of the application, the selection instruction further carries playing progress information of a multimedia resource corresponding to the multimedia resource identification information;
the sending module is further configured to send the playing progress information of the multimedia resource corresponding to the multimedia resource identification information to the target multimedia resource playing device.
Optionally, in the remote screen projection device provided by the embodiment of the application,
the receiving module is further configured to receive play status information of the multimedia resource sent by the target multimedia resource playing device;
the sending module is further configured to forward the playing state information of the multimedia resource to the mobile device, so that the mobile device displays the playing state information of the multimedia resource.
According to the remote screen projection device provided by the embodiment of the application, the mobile equipment is adopted to control the multimedia resource management equipment to search the multimedia resource playing equipment in the local area network where the multimedia resource management equipment is located, and the multimedia resource management equipment selects a target multimedia resource playing equipment from at least one searched multimedia resource playing equipment to play the multimedia resource. In the process, the mobile equipment directly controls the multimedia resource management equipment, and the multimedia resource management equipment directly controls the multimedia resource playing equipment, so that the mobile equipment does not need to directly control the multimedia resource playing equipment, and the aim that the mobile equipment can also control the multimedia resource playing equipment to remotely screen when the mobile equipment and the multimedia resource playing equipment are not in the same local area network is fulfilled.
As shown in fig. 1, a remote screen projection system for a fourth embodiment of the present application is further provided, which is configured to perform the remote screen projection method in the second embodiment, and the system includes: a mobile device 10, a multimedia asset management device 20 and a multimedia asset playback device 30;
the mobile device 10 is used for sending a search instruction to the multimedia resource management device; the search instruction is used for notifying the multimedia resource management device to search for the multimedia resource playing device 30 in the local area network;
the multimedia resource management device 20 is configured to determine a target multimedia resource playing device from the searched at least one multimedia resource playing device 30 according to the search instruction and a mapping relationship between the mobile device and the target multimedia resource playing device, which is established in advance;
the multimedia resource management device 20 is further configured to control the target multimedia resource playing device to play the multimedia resource.
According to the remote screen projection system provided by the embodiment of the application, the mobile equipment is adopted to control the multimedia resource management equipment to search the multimedia resource playing equipment in the local area network where the multimedia resource management equipment is located, and the multimedia resource management equipment selects a target multimedia resource playing equipment from at least one searched multimedia resource playing equipment to play the multimedia resource. In the process, the mobile equipment directly controls the multimedia resource management equipment, and the multimedia resource management equipment directly controls the multimedia resource playing equipment, so that the mobile equipment does not need to directly control the multimedia resource playing equipment, and the aim that the mobile equipment can also control the multimedia resource playing equipment to remotely screen when the mobile equipment and the multimedia resource playing equipment are not in the same local area network is fulfilled.
Fig. 10 is a schematic structural diagram of a computer device 40 according to an embodiment of the present application, and as shown in fig. 10, the computer device is configured to execute the remote screen projection method in fig. 2, and the device includes a memory 401, a processor 402, and a computer program stored in the memory 401 and executable on the processor 402, where the processor 402 implements the steps of the remote screen projection method when executing the computer program.
Specifically, the memory 401 and the processor 402 can be general-purpose memory and processor, which are not limited in particular, and the processor 402 can execute the remote screen projection method when executing the computer program stored in the memory 401.
Corresponding to the remote screen projection method in fig. 2, an embodiment of the present application further provides a computer-readable storage medium, on which a computer program is stored, and the computer program is executed by a processor to perform the steps of the remote screen projection method.
Specifically, the storage medium can be a general-purpose storage medium, such as a removable disk, a hard disk, or the like, and when the computer program on the storage medium is executed, the remote screen projection method can be executed.
The remote screen projection device provided by the embodiment of the application can be specific hardware on the device or software or firmware installed on the device. The device provided by the embodiment of the present application has the same implementation principle and technical effect as the foregoing method embodiments, and for the sake of brief description, reference may be made to the corresponding contents in the foregoing method embodiments where no part of the device embodiments is mentioned. It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the foregoing systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one logical division, and there may be other divisions when actually implemented, and for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of devices or units through some communication interfaces, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments provided in the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus once an item is defined in one figure, it need not be further defined and explained in subsequent figures, and moreover, the terms "first", "second", "third", etc. are used merely to distinguish one description from another and are not to be construed as indicating or implying relative importance.
Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present application, and are used for illustrating the technical solutions of the present application, but not limiting the same, and the scope of the present application is not limited thereto, and although the present application is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope disclosed in the present application; such modifications, changes or substitutions do not depart from the spirit and scope of the present disclosure, which should be construed in light of the above teachings. Are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (11)

1. A remote screen projection method is characterized in that the method is applied to a multimedia resource management device, and the multimedia resource management device and a multimedia resource playing device are accessed to a first local area network in advance; the method comprises the steps that a mobile device accesses a second local area network in advance, wherein the first local area network is different from the second local area network; the method comprises the following steps:
receiving a search instruction sent by mobile equipment; the search instruction is used for informing the multimedia resource management equipment to search the multimedia resource playing equipment in the local area network;
determining target multimedia resource playing equipment from at least one searched multimedia resource playing equipment according to the searching instruction and a mapping relation between the mobile equipment and the target multimedia resource playing equipment which is established in advance; when a user remotely casts a screen, the mapping relation is established based on target multimedia resource playing equipment selected by the user on the mobile equipment, and the target multimedia resource playing equipment is determined based on a selection instruction sent by the mobile equipment; or the mapping relation is a mapping relation used by the previous remote screen projection;
controlling the target multimedia resource playing device to play the multimedia resource;
the selection instruction further comprises screen projection information and multimedia resource identification information; the controlling the target multimedia resource playing device to play the multimedia resource comprises:
sending a playing control instruction to the target multimedia resource playing device according to the screen projection information and the multimedia resource identification information included in the selection instruction;
after receiving a multimedia resource request message carrying the multimedia resource identification information and sent by the target multimedia resource playing device, returning the multimedia resource corresponding to the multimedia resource identification information and stored by the multimedia resource management device to the target multimedia resource playing device, so that the target multimedia resource playing device plays the multimedia resource corresponding to the multimedia resource identification information.
2. The remote screen-projection method according to claim 1, wherein the determining the target multimedia resource playing device from the searched at least one multimedia resource playing device according to the search instruction and a pre-established mapping relationship between the mobile device and the target multimedia resource playing device comprises:
sending the search information of the playing equipment in the local area network based on the search instruction;
receiving playing device information which is returned by at least one multimedia resource playing device in the local area network and aims at the searching information of the playing device;
and determining target multimedia resource playing equipment from the at least one multimedia resource playing equipment according to the playing equipment information and the mapping relation between the mobile equipment and the target multimedia resource playing equipment which is established in advance.
3. The remote screen-projection method of claim 2, wherein the establishing of the mapping relationship based on the target multimedia resource playing device selected by the user on the mobile device comprises:
sending playing device information returned by at least one multimedia resource playing device in the local area network to the mobile device;
receiving a selection instruction sent by the mobile device based on the playing device information, wherein the selection instruction comprises an instruction for the mobile device to select a target multimedia resource playing device from the at least one multimedia resource playing device;
and establishing a mapping relation between the mobile equipment and the target multimedia resource playing equipment based on the selection instruction.
4. The remote screen-projection method according to claim 2, further comprising:
recording standard playing equipment information of the target multimedia resource playing equipment; the standard playing equipment information is the equipment name of the target multimedia resource playing equipment;
the determining a target multimedia resource playing device from the at least one multimedia resource playing device according to the playing device information and the mapping relationship between the mobile device and the target multimedia resource playing device, which is established in advance, further includes:
comparing playing device information which is returned by at least one multimedia resource playing device and aims at the searching information of the playing device with the recorded standard playing device information;
if the playing device information returned by the at least one multimedia resource playing device contains the target playing device information which is the same as the standard playing device information, the multimedia resource playing device corresponding to the target playing device information is determined to be the target multimedia resource playing device.
5. The remote screen projection method according to claim 1, wherein the selection instruction further includes playing progress information of a multimedia resource corresponding to the multimedia resource identification information; after receiving the multimedia resource request message carrying the multimedia resource identification information sent by the target multimedia resource playing device, the method further includes:
and sending the playing progress information of the multimedia resource corresponding to the multimedia resource identification information to the target multimedia resource playing equipment.
6. The remote screen-projection method according to any one of claims 1 to 5, wherein after controlling the target multimedia resource playing device to play the multimedia resource, the method further comprises:
receiving the playing state information of the multimedia resource sent by the target multimedia resource playing device;
and forwarding the playing state information of the multimedia resource to the mobile equipment so that the mobile equipment can display the playing state information of the multimedia resource.
7. A remote screen projection method is characterized by comprising the following steps:
the mobile device sends a search instruction to the multimedia resource management device to enable the multimedia resource management device to execute the remote screen projection method of claim 1; the search instruction is used for informing the multimedia resource management equipment to search for the multimedia resource playing equipment in the local area network.
8. A remote screen projection device is characterized in that the device is applied to a multimedia resource management device, and the multimedia resource management device and a multimedia resource playing device are accessed to a first local area network in advance; the method comprises the steps that a mobile device accesses a second local area network in advance, wherein the first local area network is different from the second local area network; the method comprises the following steps:
the receiving module is used for receiving a search instruction sent by the mobile equipment; the search instruction is used for informing the multimedia resource management equipment to search the multimedia resource playing equipment in the local area network;
a determining module, configured to determine a target multimedia resource playing device from at least one searched multimedia resource playing device according to the search instruction and a mapping relationship between the mobile device and the target multimedia resource playing device that is pre-established; when a user remotely casts a screen, the mapping relation is established based on a target multimedia resource playing device selected by the user on the mobile device, and the target multimedia resource playing device is determined based on a selection instruction sent by the mobile device; or the mapping relation is a mapping relation used by the previous remote screen projection;
the control module is used for controlling the target multimedia resource playing equipment to play the multimedia resources;
the selection instruction further comprises screen projection information and multimedia resource identification information; the controlling the target multimedia resource playing device to play the multimedia resource comprises:
sending a playing control instruction to the target multimedia resource playing device according to the screen projection information and the multimedia resource identification information included in the selection instruction;
after receiving a multimedia resource request message carrying the multimedia resource identification information and sent by the target multimedia resource playing device, returning the multimedia resource corresponding to the multimedia resource identification information and stored by the multimedia resource management device to the target multimedia resource playing device, so that the target multimedia resource playing device plays the multimedia resource corresponding to the multimedia resource identification information.
9. The remote screen-projecting device of claim 8, wherein the determining module is specifically configured to:
sending the search information of the playing equipment in the local area network based on the search instruction;
receiving playing device information which is returned by at least one multimedia resource playing device in the local area network and aims at the searching information of the playing device;
and determining target multimedia resource playing equipment from the at least one multimedia resource playing equipment according to the playing equipment information and the mapping relation between the mobile equipment and the target multimedia resource playing equipment which is established in advance.
10. The remote screen-projecting device of claim 9, further comprising:
a sending module, configured to send playback device information returned by at least one multimedia resource playback device in the local area network to the mobile device;
the receiving module is further configured to receive a selection instruction sent by the mobile device based on the playing device information, where the selection instruction includes an instruction for the mobile device to select a target multimedia resource playing device from the at least one multimedia resource playing device;
and the establishing module is used for establishing the mapping relation between the mobile equipment and the target multimedia resource playing equipment based on the selection instruction.
11. A remote screen projection system, comprising: the system comprises a mobile device, a multimedia resource management device and a multimedia resource playing device; the multimedia resource management equipment and the multimedia resource playing equipment are accessed to a first local area network in advance; the mobile equipment is accessed to a second local area network in advance, and the first local area network is different from the second local area network;
the mobile equipment is used for sending a search instruction to the multimedia resource management equipment; the search instruction is used for informing the multimedia resource management equipment to search the multimedia resource playing equipment in the local area network;
the multimedia resource management device is used for receiving a search instruction sent by the mobile device; the search instruction is used for informing the multimedia resource management equipment to search the multimedia resource playing equipment in the local area network; determining target multimedia resource playing equipment from at least one searched multimedia resource playing equipment according to the searching instruction and a mapping relation between the mobile equipment and the target multimedia resource playing equipment which is established in advance; when a user remotely casts a screen, the mapping relation is established based on target multimedia resource playing equipment selected by the user on the mobile equipment, and the target multimedia resource playing equipment is determined based on a selection instruction sent by the mobile equipment; or the mapping relation is a mapping relation used in the previous screen projection; controlling the target multimedia resource playing device to play the multimedia resource;
the selection instruction further comprises screen projection information and multimedia resource identification information; the controlling the target multimedia resource playing device to play the multimedia resource comprises: sending a playing control instruction to the target multimedia resource playing device according to the screen projection information and the multimedia resource identification information included in the selection instruction; after receiving a multimedia resource request message carrying the multimedia resource identification information and sent by the target multimedia resource playing device, returning the multimedia resource corresponding to the multimedia resource identification information and stored by the multimedia resource management device to the target multimedia resource playing device, so that the target multimedia resource playing device plays the multimedia resource corresponding to the multimedia resource identification information.
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