WO2016101698A1

WO2016101698A1 - Dlna technology-based screen push method and system

Info

Publication number: WO2016101698A1
Application number: PCT/CN2015/092898
Authority: WO
Inventors: 周勇
Original assignee: 深圳Tcl数字技术有限公司
Priority date: 2014-12-23
Filing date: 2015-10-27
Publication date: 2016-06-30
Also published as: CN105791351A

Abstract

Disclosed is a DLNA technology-based screen push method. The DLNA technology-based screen push method comprises the following steps: recording screen information into a streaming media file and storing the streaming media file; starting an RTSP service, adding the streaming media file into the RTSP service, and generating a URL address that can be remotely accessed over RTSP; and selecting a receiving end, sending to the selected receiving end a push instruction containing a media type and the URL address, and setting the media type in the push instruction as the RTSP type. Also disclosed is a DLNA technology-based screen push system. In this way, a device that does not have the WIFI-Display function or even does not have a WIFI module can easily implement screen push as long as the device accesses a local area network or establishes a point-to-point connection, so that a user can enjoy the fun brought by multi-screen interaction.

Description

Method and system for realizing screen push based on DLNA technology

Technical field

The present invention relates to the field of optical communication technologies, and in particular, to a method and system for implementing screen push based on DLNA technology.

Background technique

With the popularity of consumer electronics and the maturity of wireless communication technologies, electronic products such as home appliances, computers, and mobile phones basically support WIFI. However, since there is no corresponding standard in the interface or association between products, they can only be maintained. The industry cannot achieve the goal of cross-platform interoperability. But now through DLNA (Digital Living Nerwork Alliance, Digital Living Network Alliance) technology, without the use of a variety of different transmission lines, can easily connect to TV, computer or other DLNA-enabled devices using wired or wireless networks, making it accessible to various products. Sharing resources between them, and this is the convenience that DLNA brings to us.

DLNA technology can easily realize mutual discovery and access between multiple devices, and support multimedia file sharing and push between devices. However, the protocol itself does not support mirroring, that is, we cannot achieve the transmission screen through DLNA protocol. The mature intelligent screen technology is WIFI-Display, which can realize the mutual discovery and screen transmission between any two devices, but it has requirements for the device, that is, it must support WIFI and WIFI-Display, so many do not have WIFI and Devices with WIFI-Display function cannot implement screen push.

The above content is only used to assist in understanding the technical solutions of the present invention, and does not constitute an admission that the above is prior art.

Summary of the invention

It is a primary object of the present invention to provide a method and system for implementing screen push based on DLNA technology.

To achieve the above object, the present invention provides a method for implementing screen push based on DLNA technology, and the method for implementing screen push based on DLNA technology includes the following steps:

Record screen information as a streaming file and save it;

Initiating an RTSP service, adding the streaming media file to the RTSP service, and generating a URL address that is RTSP remotely accessible;

The receiving end is selected, and a push instruction is sent to the selected receiving end, where the pushing instruction includes a media type and the URL address, and the media type in the push instruction is set to an RTSP type.

Preferably, the step of selecting the receiving end comprises:

Scan the receiving end to obtain a description file of the receiving end;

If the obtained description file includes customized information, determining that the receiving end has a screen pushing function;

If the obtained receiving end information does not include the customized information, determining that the receiving end does not have a screen pushing function;

Select the receiver with the screen push function.

Preferably, the screen information comprises: an image, a sound, and a video.

In addition, in order to achieve the above object, the present invention further provides a method for implementing screen pushing based on DLNA technology, and the method for implementing screen pushing based on DLNA technology includes:

Receiving a push instruction sent by the push end;

Parsing the push instruction, and acquiring a media type and a URL address included in the message of the push instruction;

Obtaining and playing the screen information pushed by the push end according to the media type and the URL address.

Preferably, the step of obtaining, according to the media type and the URL address, the screen information pushed by the push end and playing:

Determining whether the parsed media type is consistent with the media type recorded by the push end;

If they are consistent, access the URL address and initialize the player to play.

Preferably, if the parsed media type is inconsistent with the media type recorded by the push end, the URL address is not accessed, and the screen information of the push end is initialized.

In addition, in order to achieve the above object, the present invention further provides a system for implementing screen pushing based on DLNA technology, and the system for implementing screen pushing based on DLNA technology includes a push end and a receiving end.

The push end includes:

a screen recording module for recording screen information into a streaming media file and saving;

An RTSP service module, configured to start an RTSP service, add the streaming media file to the RTSP service, and generate a URL address that can be RTSP remote access;

a first DLNA protocol stack module, configured to select a receiving end, and send a push instruction to the selected receiving end, where the push instruction includes a media type and the URL address, and set a media type in the push instruction For the RTSP type;

The receiving end includes:

a second DLNA protocol stack module, configured to receive a push instruction sent by the push end;

a parsing module, configured to parse the push instruction, and obtain a media type and a URL address included in the message of the push instruction;

The RTSP playing module is configured to obtain and play the screen information pushed by the push end according to the media type and the URL address.

Preferably, the first DLNA protocol stack module includes:

a scanning unit, configured to scan the receiving end, and obtain a description file of the receiving end;

a first unit, configured to determine that the receiving end has a screen pushing function if the received end information includes customized information;

a second unit, configured to determine that the receiving end does not have a screen pushing function if the received information of the receiving end does not include customized information;

Select unit to select the receiver with screen push function.

Preferably, the RTSP play module includes:

a determining unit, configured to determine whether the parsed media type is consistent with a media type recorded by the push end;

The playing unit is configured to access the URL address if it is consistent, and initialize the player to play.

Preferably, the RTSP play module further includes:

The initialization unit is configured to not access the URL address and initialize the screen information of the push end if the parsed media type is inconsistent with the media type recorded by the push end.

The invention is based on the DLNA technology, searches the receiving end through the push end, saves the searched receiving end information in the device list, and then selects the receiving end according to the searched device information, and records the obtained playing screen information into a stream. The media file is saved locally and generates a remotely accessible URL address and media type, and a push command containing the URL address and media type is sent to the receiving end. In this way, devices that do not have the WIFI-Display function, even if they do not have a WIFI module, can easily implement screen push as long as they are connected to the local area network or establish a point-to-point connection, thereby enabling users to enjoy the fun of multi-screen interaction.

DRAWINGS

1 is a schematic flowchart of an embodiment of a method for implementing screen pushing based on DLNA technology according to the present invention;

2 is a schematic diagram of a refinement process of step S103 in FIG. 1;

3 is a schematic flow chart of another embodiment of a method for implementing screen pushing based on DLNA technology according to the present invention;

4 is a schematic diagram of a refinement process of step S203 in FIG. 3;

5 is a schematic diagram of functional modules of a system for implementing screen push based on DLNA technology according to the present invention;

6 is a schematic diagram of functional modules of an embodiment of the push end of FIG. 5;

7 is a schematic diagram of a refinement function module of the first DLNA protocol stack module in FIG. 6;

8 is a schematic diagram of functional modules of an embodiment of the receiving end of FIG. 5;

FIG. 9 is a schematic diagram of a refinement function module of the RTSP play module in FIG. 8.

The implementation, functional features, and advantages of the present invention will be further described in conjunction with the embodiments.

detailed description

It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The present invention provides a method for implementing screen push based on DLNA technology, which is applied to a push end. Referring to FIG. 1 , in an embodiment, the method for implementing screen push based on DLNA technology includes:

Step S101, recording screen information into a streaming media file and saving;

In this embodiment, the push end and the receiving end may respectively be any one of a mobile phone, a television, a computer, or an IPAD. The following full-text push end uses a mobile phone as an example, and the receiving end uses a television as an example.

In this embodiment, the screen information includes images, sounds, and videos.

Step S102, starting an RTSP service, adding the streaming media file to the RTSP service, and generating a URL address that can be RTSP remote access;

In this embodiment, after the user starts the screen recording program of the mobile phone, the push end saves the screen recording process of the screen information to the local streaming media file, and then adds to the RTSP (Real Time). Streaming Protocal, real-time streaming protocol) server, and generate remotely accessible URLs (Uniform Resource Locator, Uniform Resource Locator), such as RTSP://192.168.1.100:8090/screen, and assumed to be URL1. In other embodiments, other servers may be selected for saving and generating a corresponding remotely accessible URL2.

In this embodiment, the recorded streaming media file can be played synchronously on the television in real time during the recording process on the mobile phone; or the screen information on the mobile phone can be recorded and then played on the television.

Step S103, selecting a receiving end, and sending a push instruction to the selected receiving end, where the pushing instruction includes a media type and the URL address, and sets a media type in the push instruction to an RTSP type.

In this embodiment, the mobile phone sends a push command to the selected TV through the DLNA protocol stack, sets the URL to URL1 in the message of the push command, and sets the file type to video/RTSP, which is assumed to be TYPE1. When the TV determines through the DLNA protocol stack that the TYPE1 in the received push command is video/RTSP, it accesses URL1 and invokes the RTSP player to play the screen information.

In a preferred embodiment, as shown in FIG. 2, based on the foregoing embodiment of FIG. 1, in the embodiment, the step of selecting the receiving end includes:

Step S1031: Scan the information of the receiving end to obtain a scan file of the receiving end;

In this embodiment, the mobile phone and the TV are connected by the same router, and the user turns on the mobile phone and the television, and the DLNA service is automatically turned on after the TV is turned on, and the DMR (Digital Media) is broadcasted. Render, digital media renderer) device type. After the mobile phone is powered on, the DLNA service is automatically turned on, and the device having the DMR module function is searched, and the searched device information is saved in the device list, where the device information includes the device name and other description fields for the device.

Step S1032: If the acquired scan file includes customized information, determine that the receiving end has a screen push function;

Step S1033: If the obtained receiving end information does not include customized information, it is determined that the receiving end does not have a screen pushing function;

In this embodiment, when the push end searches for the receiving end, it scans the description file of the receiving end, and detects whether the description file contains customized information. The customized information is set according to actual needs. In this embodiment, the set TV customization information is nScreenDevice. If the description file of the receiving end of the scan contains the customized information nScreenDevice, it is considered to support the screen push function; otherwise it is considered to be an ordinary DLNA device and does not have the screen push capability.

In step S1034, the receiving end having the screen pushing function is selected.

In this embodiment, various receiving ends having the function of the DMR module, such as a mobile phone, a computer, an IPAD, or even another television, broadcast their respective DMR device types, and the mobile phone as the push end selects and selects according to the searched device information. The DMR module features a TV and receives requests for screen information sent by the TV.

In this embodiment, after the user triggers the push screen button event of the DLNA push program of the push end, the program pops up the device selection list, and the list only lists the devices that support the screen push function. At this point, the user can select the receiving end that needs to play synchronously.

The present invention also provides a method for implementing screen push based on DLNA technology, which is applied to a receiving end. Referring to FIG. 3, in an embodiment, the method for implementing screen pushing based on DLNA technology includes:

Step S201, receiving a push instruction sent by the push end;

Step S202, parsing the push instruction, and acquiring a media type and a URL address included in the message of the push instruction;

In this embodiment, when the television receives the push command sent by the mobile phone, if the television is selected for reception, the television parses the file type included in the push command message, such as TYPE1 and URL address URL1, through the DLNA protocol.

Step S203: Acquire screen information pushed by the push end according to the media type and the URL address, and play.

In this embodiment, only when the TYPE1 parsed by the TV is the previously set video/RTSP, the URL1 address is accessed, and the RTSP player is called to play.

In a preferred embodiment, as shown in FIG. 4, on the basis of the foregoing embodiment of FIG. 3, in the embodiment, the step S203 includes:

Step S2031, determining whether the parsed media type is consistent with the media type recorded by the push end;

Step S2032, if they are consistent, access the URL address, and initialize the player to prepare for playing;

In step S2033, if they do not match, the URL address is not accessed, and the screen information of the push end is initialized.

In this embodiment, after the user starts the screen recording process of the mobile phone, the screen recording process is saved to the local streaming media file, and then added to the RTSP server, and a remotely accessible URL is generated, because the streaming media added to the RTSP server is generated. The file, the generated remotely accessible address is set to URL1, such as RTSP://192.168.1.100:8090/screen; and the file type setting is set to TYPE1, such as video/RTSP. After the TV receives the push command of the mobile phone, it determines whether the file type in the received push command is consistent with TYPE1 through the DLNA protocol stack. If TYPE1 in the push command message parsed by the TV is video/RTSP, access URL1 and call the RTSP player to play the screen information. In other embodiments, other servers may be selected for saving and generating a corresponding remotely accessible URL2. If the TYPE1 in the push command message parsed by the TV is not video/RTSP, the URL1 cannot be accessed, and the screen information of the mobile phone is initialized.

The present invention also provides a system for implementing screen push based on DLNA technology. Referring to FIG. 5, in an embodiment, the system for implementing screen push based on DLNA technology includes a push end and a receiving end. Referring to FIG. 6, the push end is provided. include:

The screen recording module 101 is configured to record screen information into a streaming media file and save the file;

In this embodiment, the screen information includes images, sounds, and videos.

The RTSP service module 102 is configured to start an RTSP service, add the streaming media file to the RTSP service, and generate a URL address that can be RTSP remote access;

The first DLNA protocol stack module 103 is configured to select a receiving end, and send a push instruction to the selected receiving end, where the push instruction includes a media type and the URL address, and the media type in the push instruction Set to RTSP type.

In a preferred embodiment, as shown in FIG. 7, on the basis of the foregoing embodiment of FIG. 6, in the embodiment, the first DLNA protocol stack module 103 includes:

The scanning unit 1031 is configured to scan the receiving end information, and obtain a description file of the receiving end;

The first unit 1032 is configured to determine that the receiving end has a screen pushing function if the received receiving end information includes customized information.

The second unit 1033 is configured to determine that the receiving end does not have a screen pushing function if the received receiving end information does not include the customized information.

The selecting unit 1034 selects a receiving end having a screen pushing function.

In this embodiment, after the user triggers the push screen button event of the DLNA push program of the push end, the program pops up the display device list for the user to select, and the list only lists the devices that support the screen push function. At this point, the user can select the receiving end that needs to play synchronously.

Referring to FIG. 8, in an embodiment, the receiving end includes:

a second DLNA protocol stack 201, configured to receive a push command sent by the push end;

The parsing module 202 is configured to parse the push instruction, and obtain a media type and a URL address included in the message of the push instruction;

The RTSP playing module 203 is configured to acquire and play the screen information pushed by the push end according to the media type and the URL address.

In a preferred embodiment, as shown in FIG. 9, on the basis of the foregoing embodiment of FIG. 8, in the embodiment, the RTSP playback module 203 includes:

The determining unit 2031 is configured to determine whether the parsed media type is consistent with the media type recorded by the push end;

The playing unit 2032 is configured to, if consistent, access the URL address, and initialize the player to prepare to play;

The initializing unit 2033 is configured to not access the URL address if it is inconsistent, and initialize the screen information of the push end.

The above are only the preferred embodiments of the present invention, and are not intended to limit the scope of the invention, and the equivalent structure or equivalent process transformations made by the description of the present invention and the drawings are directly or indirectly applied to other related technical fields. The same is included in the scope of patent protection of the present invention.

Claims

A method for implementing screen pushing based on DLNA technology, wherein the method for implementing screen pushing based on DLNA technology comprises the following steps:

Record screen information as a streaming file and save it;

Initiating an RTSP service, adding the streaming media file to the RTSP service, and generating a URL address that is RTSP remotely accessible;

The receiving end is selected, and a push instruction is sent to the selected receiving end, where the pushing instruction includes a media type and the URL address, and the media type in the push instruction is set to an RTSP type.
The method for implementing screen pushing based on the DLNA technology according to claim 1, wherein the step of selecting the receiving end comprises:

Scan the receiving end to obtain a description file of the receiving end;

If the obtained description file includes customized information, determining that the receiving end has a screen pushing function;

If the obtained receiving end information does not include the customized information, determining that the receiving end does not have a screen pushing function;

Select the receiver with the screen push function.
The method for implementing a screen push based on the DLNA technology according to claim 2, wherein the step of acquiring the description file of the receiving end by the scanning receiving end comprises:

Establishing a wireless network connection with the receiving end, and scanning the receiving end;

When scanning to the receiving end, determining whether the receiving end has a DMR module function;

If yes, the description file of the receiving end is obtained.
The method for implementing screen pushing based on DLNA technology according to claim 1, wherein the screen information comprises: an image, a sound, and a video.
A method for implementing screen push based on DLNA technology, wherein the method for implementing screen push based on DLNA technology comprises:

Receiving a push instruction sent by the push end;

Parsing the push instruction, and acquiring a media type and a URL address included in the message of the push instruction;

Obtaining and playing the screen information pushed by the push end according to the media type and the URL address.
The method for implementing screen push based on the DLNA technology according to claim 5, wherein the step of acquiring the screen information pushed by the push end according to the media type and the URL address and playing comprises:

Determining whether the parsed media type is consistent with the media type recorded by the push end;

If they are consistent, access the URL address and initialize the player to play.
The method for implementing a screen push based on the DLNA technology according to claim 6, wherein the step of determining whether the parsed media type is consistent with the media type recorded by the push end further comprises:

If the parsed media type does not match the media type recorded by the push end, the URL address is not accessed, and the screen information of the push end is initialized.
A push end, wherein the push end comprises:

a screen recording module for recording screen information into a streaming media file and saving;

An RTSP service module, configured to start an RTSP service, add the streaming media file to the RTSP service, and generate a URL address that can be RTSP remote access;

a first DLNA protocol stack module, configured to select a receiving end, and send a push instruction to the selected receiving end, where the push instruction includes a media type and the URL address, and set a media type in the push instruction For the RTSP type.
The push end according to claim 8, wherein the first DLNA protocol stack module comprises:

a scanning unit, configured to scan the receiving end, and obtain a description file of the receiving end;

a first unit, configured to determine that the receiving end has a screen pushing function if the received end information includes customized information;

a second unit, configured to determine that the receiving end does not have a screen pushing function if the received information of the receiving end does not include customized information;

Select unit to select the receiver with screen push function.
The push end according to claim 9, wherein the scanning unit comprises:

a scanning subunit, configured to establish a wireless network connection with the receiving end, and scan the receiving end;

a determining subunit, configured to determine, when scanning to the receiving end, whether the receiving end has a DMR module function;

Obtaining a subunit, if yes, acquiring a description file of the receiving end.
A receiving end, wherein the receiving end comprises:

a second DLNA protocol stack module, configured to receive a push instruction sent by the push end;

a parsing module, configured to parse the push instruction, and obtain a media type and a URL address included in the message of the push instruction;

The RTSP playing module is configured to obtain and play the screen information pushed by the push end according to the media type and the URL address.
The receiving end according to claim 11, wherein the RTSP playing module comprises:

a determining unit, configured to determine whether the parsed media type is consistent with a media type recorded by the push end;

The playing unit is configured to access the URL address if it is consistent, and initialize the player to play.
The receiving end according to claim 12, wherein the RTSP playing module further comprises:

The initialization unit is configured to not access the URL address and initialize the screen information of the push end if the parsed media type is inconsistent with the media type recorded by the push end.
A system for implementing screen pushing based on DLNA technology, wherein the system for implementing screen pushing based on DLNA technology comprises a push end and a receiving end,

The push end includes:

a screen recording module for recording screen information into a streaming media file and saving;

An RTSP service module, configured to start an RTSP service, add the streaming media file to the RTSP service, and generate a URL address that can be RTSP remote access;

a first DLNA protocol stack module, configured to select a receiving end, and send a push instruction to the selected receiving end, where the push instruction includes a media type and the URL address, and set a media type in the push instruction For the RTSP type;

The receiving end includes:

a second DLNA protocol stack module, configured to receive a push instruction sent by the push end;

a parsing module, configured to parse the push instruction, and obtain a media type and a URL address included in the message of the push instruction;

The RTSP playing module is configured to obtain and play the screen information pushed by the push end according to the media type and the URL address.
The system for implementing screen pushing based on the DLNA technology according to claim 14, wherein the first DLNA protocol stack module comprises:

a scanning unit, configured to scan the receiving end, and obtain a description file of the receiving end;

a first unit, configured to determine that the receiving end has a screen pushing function if the received end information includes customized information;

a second unit, configured to determine that the receiving end does not have a screen pushing function if the received information of the receiving end does not include customized information;

Select unit to select the receiver with screen push function.
The system for implementing screen pushing based on the DLNA technology according to claim 14, wherein the RTSP playing module comprises:

a determining unit, configured to determine whether the parsed media type is consistent with a media type recorded by the push end;

The playing unit is configured to access the URL address if it is consistent, and initialize the player to play.
The system for implementing a screen push based on the DLNA technology according to claim 16, wherein the RTSP play module further comprises:

The initialization unit is configured to not access the URL address and initialize the screen information of the push end if the parsed media type is inconsistent with the media type recorded by the push end.