CN103618915A - Multi-screen interaction method and device - Google Patents

Abstract

The embodiment of the invention provides a multi-screen interaction method. The method comprises the steps of receiving audio and video signals sent by a set top box, conducting two-path processing on the audio and video signals, and for the first path, outputting the audio and video signals to a first display terminal through an output HDMI; for the other path, pushing the audio and video signals to a second display terminal through a wireless local area network so as to enable the first display terminal and the second display terminal to synchronously display the audio and video signals. Correspondingly, the embodiment of the invention further discloses a multi-screen interaction device. Through the adoption of the method and device, an existing set top box can be utilized for achieving multi-screen interaction, and therefore the resource utilization rate is improved.

Description

A kind of method of multi-screen interactive and device

Technical field

The present invention relates to digital television techniques field, relate in particular to a kind of method and device of multi-screen interactive.

Background technology

" touching and see " is video mapping touch technology, realized low delay multi-screen synchronous between wireless network terminal (as mobile phone, PAD etc.) and television terminal, soon the content map on television terminal is to wireless network terminal, can control television terminal by wireless network terminal, for example by mobile phone control television terminal TV programme F.F., retreat and change etc.The current Set Top Box with multi-screen interactive function on the market completely newly develops, low to the utilance of existing Set Top Box, has therefore caused a large amount of wastings of resources.

Summary of the invention

The invention provides a kind of method and device of multi-screen interactive, can utilize existing Set Top Box to realize multi-screen interactive, thereby improve resource utilization.

The embodiment of the present invention provides a kind of method of multi-screen interactive, comprising:

The audio-video signal that receiving set up box sends;

Described audio-video signal is carried out to two-way processing, and wherein a road is exported to the first display terminal by described audio-video signal by HDMI output interface;

Another road is pushed to the second display terminal by described audio-video signal by WLAN (wireless local area network), so that audio-video signal described in described the first display terminal and described the second display terminal simultaneous display.

Correspondingly, the embodiment of the present invention also provides a kind of device of multi-screen interactive, comprising:

Audio frequency and video receiver module, the audio-video signal sending for receiving set up box;

Minute formwork, is branched off into audio-video signal described in two-way for the audio-video signal that described audio frequency and video receiver module is received;

HDMI output module, exports to the first display terminal for inciting somebody to action a wherein road audio-video signal;

Pushing module, for another road audio-video signal is pushed to the second display terminal by WLAN (wireless local area network), so that audio-video signal described in described the first display terminal and described the second display terminal simultaneous display.

Implement the embodiment of the present invention, by the audio-video signal of receiving set up box, and described audio-video signal is sent to respectively to the first display terminal and the second display terminal, can utilize existing Set Top Box to realize multi-screen interactive, improved resource utilization.

Accompanying drawing explanation

In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, to the accompanying drawing of required use in embodiment be briefly described below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.

Fig. 1 is the method flow diagram of a kind of multi-screen interactive of providing of the embodiment of the present invention;

Fig. 2 is the method flow diagram of the another kind of multi-screen interactive that provides of the embodiment of the present invention;

Fig. 3 is the structural representation of the device of a kind of multi-screen interactive of providing of the embodiment of the present invention;

Fig. 4 is the structural representation of the pushing module that provides of the embodiment of the present invention;

Fig. 5 is the structural representation of the audio/video coding submodule that provides of the embodiment of the present invention;

Fig. 6 is the structural representation of the device of the another kind of multi-screen interactive that provides of the embodiment of the present invention.

Embodiment

Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.

Refer to Fig. 1; the method flow diagram of a kind of multi-screen interactive that Fig. 1 provides for the embodiment of the present invention; the method of the multi-screen interactive in the present embodiment can realize on Dongle; be dongle equipment, wherein, the equipment of dongle described in the present embodiment is placed on existing Set Top Box; in other embodiments; as shown in Figure 6, described dongle equipment can be built in existing Set Top Box, is connected to form multi-screen interactive Set Top Box with the central processing unit of existing Set Top Box.The method of the multi-screen interactive in the present embodiment can comprise as shown in Figure 1:

S110, the audio-video signal that receiving set up box sends.

Concrete, dongle equipment can pass through HDMI(High Difinition Multimedia, i.e. high-definition media interface) input interface is connected with existing Set Top Box, receives the audio-video signal of described Set Top Box transmission.

As a kind of optional execution mode, before the audio-video signal that receiving set up box sends, dongle equipment can receive the second display terminal for the control command of described Set Top Box, described the second display terminal can be for having the portable wireless terminal of wireless receiving function, mobile phone for example, PAD and notebook computer etc., described control command for example program is switched, F.F. or retreat etc., described dongle equipment can transmit by UART(universal asynchronous receiving-transmitting) serial ports or I2C(transfer of data) serial ports etc. sets up control command passback circuit with described Set Top Box, described dongle equipment receives the control command of described the second display terminal by WLAN (wireless local area network), and by described control command passback circuit, described control command is sent to described Set Top Box, so that described Set Top Box sends described audio-video signal according to described control command.

S120, exports to the first display terminal by described audio-video signal by HDMI output interface.

Concrete, described dongle equipment can be connected with described the first display terminal by HDMI output interface, wherein, described the first display terminal can be the large-size screen monitors terminal equipments such as television set or TV integrated machine, when described dongle equipment receives described audio-video signal, described audio-video signal is branched off into audio-video signal described in two-way, and wherein a road audio-video signal can be exported to described the first display terminal by described HDMI output interface.It should be noted that, when described the first display terminal is TV integrated machine, described existing Set Top Box is built in described TV integrated machine, be that described the first display terminal and described existing Set Top Box form described TV integrated machine, described TV integrated machine is exported described audio-video signal to described dongle equipment, described TV integrated machine receives a wherein road audio-video signal of described dongle equipment output, and shows the content of described audio-video signal.

S130, is pushed to the second display terminal by described audio-video signal by WLAN (wireless local area network), so that audio-video signal described in described the first display terminal and described the second display terminal simultaneous display.

Concrete, audio-video signal is pushed to the second display terminal by WLAN (wireless local area network) described in another road that described dongle equipment can obtain branch, so that audio-video signal described in described the first display terminal and described the second display terminal simultaneous display.

As a kind of optional execution mode, before described audio-video signal is pushed to described the second display terminal by WLAN (wireless local area network), receive the access request of described the second display terminal.Described dongle equipment is (as 1S, 2S or 3S etc.) broadcast address information regularly, described the second display terminal can send access request to described dongle equipment according to described address information, described access request comprises the encrypted message that user inputs, described dongle equipment can carry out purview certification to described the second display terminal according to the encrypted message in described access request, when described encrypted message is identical with default password, the authentication that defines the competence is passed through, and described dongle equipment is set up the wireless connections with described the second display terminal.

Refer to Fig. 2; the method flow diagram of the another kind of multi-screen interactive that Fig. 2 provides for the embodiment of the present invention; the method of the multi-screen interactive in the present embodiment can realize on Dongle; be dongle equipment, wherein, the equipment of dongle described in the present embodiment is placed on existing Set Top Box; in other embodiments; as shown in Figure 6, described dongle equipment can be built in existing Set Top Box, is connected to form multi-screen interactive Set Top Box with the central processing unit of existing Set Top Box.The method of the multi-screen interactive in the present embodiment can comprise as shown in Figure 2:

S210, receives the second display terminal for the control command of Set Top Box.

Concrete, described the second display terminal can be for having the portable wireless terminal of wireless receiving function, mobile phone for example, PAD and notebook computer etc., described control command for example program is switched, F.F. or retreat etc., described dongle equipment can transmit by UART(universal asynchronous receiving-transmitting) serial ports or I2C(transfer of data) serial ports etc. sets up control command passback circuit with described Set Top Box, described dongle equipment receives the control command of described the second display terminal by WLAN (wireless local area network), and by described control command passback circuit, described control command is sent to described Set Top Box, so that described Set Top Box sends corresponding audio-video signal according to described control command.

S220, receives the audio-video signal that described Set Top Box sends according to described control command.

Concrete, dongle equipment can be connected with existing Set Top Box by HDMI input interface, receives the audio-video signal that described Set Top Box sends according to described control command.

S230, exports to the first display terminal by described audio-video signal by HDMI output interface.

Concrete, described dongle equipment can be connected with described the first display terminal by HDMI output interface, wherein, described the first display terminal can have screen terminal equipment for television set or TV integrated machine etc., when described dongle equipment receives described audio-video signal, described audio-video signal is branched off into two-way audio-video signal, and wherein a road audio-video signal can be exported to described the first display terminal by described HDMI output interface.

S240, the audio and video frequency signal in separated described audio-video signal.

Concrete, another road audio-video signal that described dongle equipment obtains branch carries out separation, thereby obtain respectively audio signal and vision signal that described audio-video signal is corresponding, wherein, dongle equipment can adopt I2S(Inter-IC Sound) audio signal in separated described audio-video signal, adopt the vision signal in the separated described audio-video signal of RGB.It should be noted that, audio signal output in described audio-video signal is not limited to described I2S form, vision signal output in described audio-video signal is not limited to described rgb format, in the present embodiment to the audio signal in audio-video signal and vision signal after separating, the audio and video frequency signal respectively separation being obtained is encoded, in other embodiments, can directly to described audio-video signal, encode.

S250, the audio and video frequency signal that described separation is obtained is encoded according to default coded system respectively.

In specific implementation, described default coded system comprises default audio coding mode (as PCM, MP3 or OGG etc.) and default Video coding mode (as MPEG series or H.26x serial), the audio signal that dongle equipment can obtain separation is encoded according to default audio coding mode, thus the audio signal after being encoded; The vision signal that separation is obtained is encoded according to default Video coding mode, thus the vision signal after being encoded.Further, sound, encoding video signal that described dongle equipment can adopt high voiceless sound, video encoder respectively described separation to be obtained, thus improve the disposal ability to sound, vision signal.

S260, by described according to the audio and video frequency signal after default coded system coding, carry out respectively multiplexing, thereby picked up signal transport stream.For example, dongle equipment adopts the coded system of MPEG-2 to audio signal and encoding video signal, by the audio signal after coding and the vision signal audio frequency elementary stream and the video elementary code stream that are packaged as respectively variable-length, wherein, video elementary code stream one frame is a PES bag (Packetized Elementary Stream, be Packet Elementary Stream), audio frequency elementary stream is no more than 64KB.Dongle equipment is multiplexed with the elementary stream after packing the transport stream of 188 bytes through multiplexer, insert program specific information or additional data simultaneously in transport stream.

S270, encapsulates the transport stream signal of described acquisition according to the default network transmission protocol, thereby obtains audio, video data bag.

Concrete, the described default network transmission protocol can be the agreements such as UDP or TCP, and dongle equipment is packaged into the audio, video data bag with described default network transmission protocol format match by the transport stream signal obtaining in S260.For example, the described default network transmission protocol is udp protocol, and UDP message is divided into UDP header and UDP message district, and wherein, dongle equipment is stored in UDP message district by transport stream signal, encapsulates, thereby obtain audio, video data bag according to UDP message format.

S280, is pushed to the second display terminal by the described audio, video data bag acquiring by WLAN (wireless local area network), so that audio-video signal described in described the first display terminal and described the second display terminal simultaneous display.

As a kind of optional execution mode, before dongle equipment is pushed to described the second display terminal by described audio, video data bag by WLAN (wireless local area network), receive the access request of described the second display terminal.Described dongle equipment is (as 1S, 2S or 3S etc.) broadcast address information regularly, described the second display terminal can send access request to described dongle equipment according to described address information, described access request comprises the encrypted message that user inputs, described dongle equipment can carry out purview certification to described the second display terminal according to the encrypted message in described access request, when described encrypted message identical with default password, the authentication that defines the competence is passed through, and described dongle equipment is set up the wireless connections with described the second display terminal.

Refer to Fig. 3; the device of a kind of multi-screen interactive that Fig. 3 provides for the embodiment of the present invention; the device of the multi-screen interactive in the present embodiment can be realized on Dongle; be dongle equipment, wherein, the equipment of dongle described in the present embodiment is placed on existing Set Top Box; in other embodiments; as shown in Figure 6, described dongle equipment can be built in existing Set Top Box, is connected to form multi-screen interactive Set Top Box with the central processing unit of existing Set Top Box.The device of the multi-screen interactive in the embodiment of the present invention at least can comprise audio frequency andvideo receiver module 310,minute formwork 320,HDMI output module 330 andpushing module 340 as shown in Figure 3, wherein:

Audio frequency andvideo receiver module 310, the audio-video signal sending for receiving set up box.

In specific implementation, audio frequency andvideo receiver module 310 can be connected with existing Set Top Box by HDMI input interface, by described HDMI input interface, receives the audio-video signal that described Set Top Box sends.

Optionally, the device of described multi-screen interactive can also comprise controlcommand receiver module 350 and controlcommand output module 360, wherein:

Described controlcommand receiver module 350 is for receiving the second display terminal for the control command of described Set Top Box.In specific implementation, described the second display terminal can be for having the portable wireless terminal of wireless receiving function, for example mobile phone, PAD and notebook computer etc., for example program switching, the F.F. or retreat etc. of described control command, described controlcommand receiver module 350 receives the control command that described the second display terminal sends, and described control command is returned to described controlcommand output module 360.

Described controlcommand output module 360, sends to described Set Top Box for the control command that described controlcommand receiver module 350 is received, so that described Set Top Box sends described audio-video signal according to described control command.Concrete, described controlcommand output module 360 can transmit by UART(universal asynchronous receiving-transmitting) serial ports or I2C(transfer of data) serial ports etc. sets up control command passback circuit with described Set Top Box, described controlcommand output module 360 sends to described Set Top Box by the control command receiving by described control command passback circuit, so that described Set Top Box sends described audio-video signal according to described control command.

Minute formwork 320, is branched off into audio-video signal described in two-way for the audio-video signal that described audio frequency andvideo receiver module 310 is received.

In specific implementation, within described minute,formwork 320 is connected with described audio frequency andvideo receiver module 310, the audio-video signal that described audio frequency andvideo receiver module 310 is received is branched off into two-way audio-video signal, wherein a road audio-video signal is transferred to describedHDMI output module 330, and an other road audio-video signal is transferred to pushingmodule 340.

HDMI output module 330, exports to the first display terminal for inciting somebody to action a wherein road audio-video signal.

In specific implementation, describedHDMI output module 330 can be connected with described the first display terminal by HDMI output interface, wherein, described the first display terminal can have screen terminal equipment for television set or TV integrated machine etc., when describedHDMI output module 330 receives wherein a road audio-video signal, by described HDMI output interface, described audio-video signal is exported to described the first display terminal.

Pushing module 340, for another road audio-video signal is pushed to the second display terminal by WLAN (wireless local area network), so that audio-video signal described in described the first display terminal and described the second display terminal simultaneous display.

Further alternative, describedpushing module 340 can comprise audio/video coding submodule 341,encapsulation submodule 342 andpropelling movement submodule 343 as shown in Figure 4, wherein:

Audio/video coding submodule 341, encodes for the wherein road audio-video signal that describedminute formwork 320 branch are obtained.

Further alternative, described audio/video coding submodule 341 can comprise audio frequency and videoseparative element 341a, audio coding unit 341b, video encoding unit 341c and Multiplexing Unit 341d as shown in Figure 5, wherein:

Audio frequency and videoseparative element 341a, for separating of the audio and video frequency signal in described audio-video signal.

In specific implementation, another road audio-video signal that described audio frequency and videoseparative element 341a obtains branch carries out separation, thereby obtain respectively audio signal and vision signal that described audio-video signal is corresponding, wherein, audio frequency and videoseparative element 341a can adopt I2S(Inter-IC Sound) audio signal in separated described audio-video signal, adopt the vision signal in the separated described audio-video signal of RGB, it should be noted that, audio signal output in described audio-video signal is not limited to described I2S form, vision signal output in described audio-video signal is not limited to described rgb format.

Audio coding unit 341b, encodes according to default audio coding mode for the audio signal that the separation of described audio frequency and video separative element is obtained.

In specific implementation, described default audio coding mode can comprise PCM, MP3 or OGG etc., and the audio signal that described audio coding unit 341b obtains separation is encoded according to default audio coding mode, thus the audio signal after being encoded.

Video encoding unit 341c, encodes according to default Video coding mode for the vision signal that the separation of described audio frequency and video separative element is obtained.

In specific implementation, described default Video coding mode can comprise MPEG series or series etc. H.26x, the vision signal that described video encoding unit 341b obtains separation is encoded according to default Video coding mode, thus the vision signal after being encoded.

Multiplexing Unit 341d, multiplexing for the audio signal after described audio coding unit 341b coding and the vision signal after described video encoding unit 341c coding are carried out, thus picked up signal transport stream.For example, default audio coding mode and default Video coding mode are MPEG-2, Multiplexing Unit 341d is by the audio signal after coding and the vision signal audio frequency elementary stream and the video elementary code stream that are packaged as respectively variable-length, wherein, video elementary code stream one frame is a PES bag (Packetized Elementary Stream, be Packet Elementary Stream), audio frequency elementary stream is no more than 64KB.Multiplexing Unit 341d is multiplexed with the elementary stream after packing the transport stream of 188 bytes through multiplexer, insert program specific information or additional data simultaneously in transport stream.

Encapsulation submodule 342, for the audio-video signal after described audio/video coding submodule 341 codings is encapsulated according to the default network transmission protocol, thereby obtains audio, video data bag.

In specific implementation, the described default network transmission protocol can be the agreements such as UDP or TCP, and describedencapsulation submodule 342 is packaged into the audio, video data bag with described default network transmission protocol format match by the transport stream signal of acquisition.For example, the described default network transmission protocol is udp protocol, and UDP message is divided into UDP header and UDP message district, and wherein,encapsulation submodule 342 is stored in UDP message district by transport stream signal, encapsulates, thereby obtain audio, video data bag according to UDP message format.

Push submodule 343, for the described audio, video data bag acquiring is pushed to described the second display terminal by WLAN (wireless local area network).

In specific implementation, described propellingmovement submodule 343 is pushed to the second display terminal by the audio, video data bag acquiring by WLAN (wireless local area network), so that audio-video signal described in described the first display terminal and described the second display terminal simultaneous display.

Optionally, the device of described multi-screen interactive can also comprise accessrequest acquisition module 370 andpurview certification module 380, wherein:

Accessrequest acquisition module 370, for receiving the access request of described the second display terminal.

In specific implementation, described accessrequest acquisition module 370 is (as 1S, 2S or 3S etc.) broadcast address information regularly, described the second display terminal can send access request to described accessrequest acquisition module 370 according to described address information, and described access request comprises the encrypted message that user inputs.

Purview certification module 380, carries out purview certification for the access request receiving according to described accessrequest acquisition module 370 to described the second display terminal, and the authentication that defines the competence is passed through.

In specific implementation, describedpurview certification module 380 can be carried out purview certification to described the second display terminal according to the encrypted message in described access request, when described encrypted message is identical with default password, the authentication that defines the competence is passed through, and sets up the wireless connections with described the second display terminal.

Implement the embodiment of the present invention, by the audio-video signal of receiving set up box, and described audio-video signal is sent to respectively to the first display terminal and the second display terminal, can utilize existing Set Top Box to realize multi-screen interactive, improved resource utilization.

Refer to Fig. 6; the structural representation of the device of the another kind of multi-screen interactive that Fig. 6 provides for the invention process; the device of the multi-screen interactive in the present embodiment can be realized on Dongle; be dongle equipment; wherein; the equipment of dongle described in the present embodiment can be built in existing Set Top Box, is connected to form multi-screen interactive Set Top Box with the central processing unit of existing Set Top Box.The device of the multi-screen interactive in the present embodiment at least can compriseminute formwork 610,HDMI output module 620 and pushingmodule 630 as shown in Figure 6, wherein:

Within described minute,formwork 610 is connected with the HDMI output of the central processing unit of existing Set Top Box, for receiving the audio-video signal of described central processing unit output, and described audio-video signal is branched off into two-way audio-video signal, wherein a road audio-video signal is transferred to describedHDMI output module 620, and an other road audio-video signal is transferred to pushing module 630.Wherein, describedHDMI output module 620 is incited somebody to action a wherein road audio-video signal by HDMI output interface and is exported to the first display terminal, and described the first display terminal can be the large-size screen monitors terminal equipments such as television set or TV integrated machine.It should be noted that, when described the first display terminal is TV integrated machine, existing Set Top Box is built in described TV integrated machine, be that described the first display terminal and existing Set Top Box form described TV integrated machine, there is inner connection in describedHDMI output module 620, describedHDMI output module 620 can be pushed to described the first display terminal by the described inner wherein road audio-video signal that connects in described TV integrated machine with described the first display terminal.

Further alternative, the device of described multi-screen interactive can also comprise controlcommand receiver module 640, described controlcommand receiver module 640 is connected with the control command passback port of the central processing unit of existing Set Top Box, for receiving the second display terminal for the control command of described multi-screen interactive Set Top Box.In specific implementation, described control command passback port can comprise UART port or I2C port etc., described the second display terminal can be for having the portable wireless terminal of wireless receiving function, mobile phone for example, PAD and notebook computer etc., described control command for example program is switched, F.F. or retreat etc., described controlcommand receiver module 640 receives the control command that described the second display terminal sends, and described control command is returned to port transmission to central processing unit by described control command, so that responding described control command, described central processing unit sends described audio-video signal.

Function application when the function application of describedHDMI output module 620 and pushingmodule 630 is external with dongle equipment is identical, no longer elaboration here.

Further alternative, the device of described multi-screen interactive can also comprise accessrequest acquisition module 650 andpurview certification module 660, wherein, function application when the function application of accessrequest acquisition module 650 andpurview certification module 660 is external with dongle equipment is identical, no longer elaboration here.

Implement the embodiment of the present invention, utilizing existing Set Top Box to realize multi-screen interactive, improve on the basis of resource utilization, further, dongle equipment is built in to existing Set Top Box, thereby has reduced outside line connection, thereby strengthened user's experience.

One of ordinary skill in the art will appreciate that all or part of flow process realizing in above-described embodiment method, to come the hardware that instruction is relevant to complete by computer program, described program can be stored in a computer read/write memory medium, this program, when carrying out, can comprise as the flow process of the embodiment of above-mentioned each side method.Wherein, described storage medium can be magnetic disc, CD, read-only store-memory body (Read-Only Memory, ROM) or random store-memory body (Random Access Memory, RAM) etc.

It should be noted that, in the above-described embodiments, the description of each embodiment is all emphasized particularly on different fields in certain embodiment, there is no the part of detailed description, can be referring to the associated description of other embodiment.Secondly, those skilled in the art also should know, the embodiment described in specification all belongs to preferred embodiment, and related action and module might not be that the present invention is necessary.

Step in embodiment of the present invention method can be carried out according to actual needs order and adjusted, merges and delete.

Module in embodiment of the present invention device or unit can merge according to actual needs, divide and delete.

Above disclosed is only preferred embodiment of the present invention, certainly can not limit with this interest field of the present invention, and the equivalent variations of therefore doing according to the claims in the present invention, still belongs to the scope that the present invention is contained.

Claims (10)

1. a multi-screen interaction method, is characterized in that, comprising:

The audio-video signal that receiving set up box sends;

Described audio-video signal is carried out to two-way processing, and wherein a road is exported to the first display terminal by described audio-video signal by HDMI output interface;

Another road is pushed to the second display terminal by described audio-video signal by WLAN (wireless local area network), so that audio-video signal described in described the first display terminal and described the second display terminal simultaneous display.

2. the method for claim 1, is characterized in that, describedly described audio-video signal is pushed to the second display terminal by WLAN (wireless local area network) comprises:

Described audio-video signal is encoded;

Audio-video signal after described coding is encapsulated according to the default network transmission protocol, thereby obtain audio, video data bag;

Describedly described audio-video signal be pushed to the second display terminal by WLAN (wireless local area network) comprise:

The described audio, video data bag acquiring is pushed to the second display terminal by WLAN (wireless local area network).

3. method as claimed in claim 2, is characterized in that, described described audio-video signal is encoded and comprised:

Audio and video frequency signal in separated described audio-video signal;

The audio and video frequency signal that described separation is obtained is encoded according to default coded system respectively;

By described according to the audio and video frequency signal after default coded system coding, carry out respectively multiplexing, thereby picked up signal transport stream;

Described audio-video signal after described coding is encapsulated according to the default network transmission protocol, thereby obtain audio, video data bag, comprises:

The transport stream signal of described acquisition is encapsulated according to the default network transmission protocol, thereby obtain audio, video data bag.

4. the method as described in claim 1-3 any one, is characterized in that, before the audio-video signal that described receiving set up box sends, also comprises:

Receive described the second display terminal for the control command of described Set Top Box;

Described control command is sent to described Set Top Box, so that described Set Top Box sends described audio-video signal according to described control command.

5. the method for claim 1, is characterized in that, described described audio-video signal is pushed to the second display terminal by WLAN (wireless local area network) before, also comprise:

Receive the access request of described the second display terminal;

According to described access request, described the second display terminal is carried out to purview certification, and the authentication that defines the competence is passed through.

6. a multi-screen interactive device, is characterized in that, comprising:

Audio frequency and video receiver module, the audio-video signal sending for receiving set up box;

Minute formwork, is branched off into audio-video signal described in two-way for the audio-video signal that described audio frequency and video receiver module is received;

HDMI output module, exports to the first display terminal for inciting somebody to action a wherein road audio-video signal;

Pushing module, for another road audio-video signal is pushed to the second display terminal by WLAN (wireless local area network), so that audio-video signal described in described the first display terminal and described the second display terminal simultaneous display.

7. device as claimed in claim 6, is characterized in that, described pushing module comprises:

Audio/video coding submodule, encodes for the wherein road audio-video signal that described minute formwork branch obtained;

Encapsulation submodule, for the audio-video signal after described audio/video coding submodule coding is encapsulated according to the default network transmission protocol, thereby obtains audio, video data bag;

Push submodule, for the described audio, video data bag acquiring is pushed to described the second display terminal by WLAN (wireless local area network).

8. device as claimed in claim 7, is characterized in that, described audio/video coding submodule comprises:

Audio frequency and video separative element, for separating of the audio and video frequency signal in described audio-video signal;

Audio coding unit, encodes according to default audio coding mode for the audio signal that the separation of described audio frequency and video separative element is obtained;

Video encoding unit, encodes according to default Video coding mode for the vision signal that the separation of described audio frequency and video separative element is obtained;

Multiplexing Unit, multiplexing for the audio signal after described audio coding unit coding and the vision signal after described video encoding unit coding are carried out, thus picked up signal transport stream;

Described encapsulation submodule is used for:

The transport stream signal of described acquisition is encapsulated according to the default network transmission protocol, thereby obtain audio, video data bag.

9. the device as described in claim 6-8 any one, is characterized in that, also comprises:

Control command receiver module, for receiving described the second display terminal for the control command of described Set Top Box;

Control command output module, sends to described Set Top Box for the control command that described control command receiver module is received, so that described Set Top Box sends described audio-video signal according to described control command.

10. device as claimed in claim 6, is characterized in that, also comprises:

Access request acquisition module, for receiving the access request of described the second display terminal;

Purview certification module, carries out purview certification for the access request receiving according to described access request acquisition module to described the second display terminal, and the authentication that defines the competence is passed through.

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