TW201401855A - System for multimedia sharing, apparatus and method therefor - Google Patents

Abstract

A system for multimedia sharing, apparatus and method therefor are provided. The system includes a multimedia sharing apparatus, at least one multimedia display apparatus and at least one control apparatus. The multimedia sharing apparatus receives a network multimedia signal, transforms at least one of a plurality of multimedia data in the network multimedia signal into at least one video transport stream, modulates the video transport streams into a digital television signal and transmits the digital television signal. The multimedia display apparatus' receive the digital television signal and respectively display and broadcast the video transport stream corresponds to a program in the digital television signal. The control apparatus' respectively corresponds to the multimedia display apparatus'. When the control apparatus receives an operating signal, the control apparatus transmit a remote signal to the multimedia sharing apparatus according to the operating signal to switch the video transport stream corresponding to the program in the digital television signal displayed by the multimedia display apparatus.

Description

Multimedia sharing system, device and method thereof

The present invention relates to a communication system, apparatus and method, and more particularly to a multimedia communication system, apparatus and method.

With the advancement of technology, people's demand for multimedia audio and video has also increased. Internet Protocol Television (IPTV) is an emerging multimedia application method developed in response to such demands. IPTV is a system for transmitting television signals using a broadband network as a medium, and transmits television signals to subscribers via a broadband protocol over broadband. In general, IPTV is a type of digital TV, so ordinary TV sets need to receive channels with the corresponding Set-Top Box (STB). In this way, the TV can only be placed around the box. When a TV with multiple TVs in a family wants to share TV signals, each TV station can only watch the same channel, which is extremely inconvenient.

The present invention provides a multimedia sharing system, apparatus and method, which enable multiple multimedia display devices to view different audio and video content through a single multimedia sharing device.

A multimedia sharing system includes: a multimedia sharing device, one or more multimedia display devices, and one or more control devices. Multimedia sharing The device receives a network multimedia signal, wherein the network multimedia signal includes a plurality of multimedia materials. The multimedia sharing device converts one or more multimedia materials of the plurality of multimedia materials into one or more audio and video transmission streams, and modulates the one or more audio and video transmission streams into a digital television signal and transmits the same. Wherein the digital television signal comprises one or more programs corresponding to one or more audiovisual transport streams. The one or more multimedia display devices respectively receive the digital television signals and respectively display and play the audiovisual transport stream of one of the one or more of the corresponding digital television signals. The one or more control devices respectively correspond to one or more multimedia display devices. When each control device receives an operation signal, the corresponding operation signal transmits a remote control signal to the multimedia sharing device to switch the multimedia display device corresponding to each control device. The video transmission stream in the program of the received digital television signal, and/or the playback state of the video transmission stream.

The invention provides a multimedia sharing device, which comprises a network unit, a demultiplexer, one or more transport stream converters and a digital television modulator. The network unit is connected to an external network to receive a network multimedia signal. The demultiplexer is coupled to the network unit, receives the network multimedia signal and demultiplexes the multimedia signal of the multiplex network into a plurality of multimedia materials. The one or more transport stream converters are coupled to the demultiplexer, respectively receive one or more multimedia materials in the multimedia data, and respectively convert one or more multimedia materials into one or more audiovisual transport streams. The digital television modulator is coupled to one or more transport stream converters, receives one or more audio and video transmission streams, modulates one or more audio and video transmission streams into a digital television signal, and transmits the digital television signal to one or more A multimedia display device wherein the digital television signal includes one or more programs corresponding to one or more audiovisual transport streams.

The present invention provides a multimedia sharing method, including the following steps. First, connect to an external network to receive a network multimedia signal. Then, the multiplexed network multimedia signal is a plurality of multimedia materials. Then, one or more multimedia materials in the plurality of multimedia materials are converted into one or more audiovisual transport streams. Furthermore, the one or more audiovisual transport streams are modulated into a digital television signal and the digital television signal is transmitted, wherein the digital television signal includes one or more programs corresponding to one or more audiovisual transport streams.

Based on the above, the present invention provides a multimedia sharing system, apparatus, and method, such that a plurality of multimedia display devices can separately watch different programs from a single signal source, such as a network television multimedia signal, through a multimedia sharing device. When it is necessary to control the current playing state or switch the viewing content, the user can transmit a remote control signal to the multimedia sharing device through the control device for control.

The above described features and advantages of the present invention will be more apparent from the following description.

FIG. 1 is a system block diagram of a multimedia sharing system according to an embodiment of the invention. Referring to FIG. 1, the multimedia sharing system 10 includes a multimedia sharing device 110, multimedia display devices 121~12n, and control devices 131~13n, where n is a positive integer. The multimedia sharing device 110 receives the network multimedia signal IPSIG, wherein the network multimedia signal IPSIG includes a plurality of multimedia materials. The network multimedia signal IPSIG can be an Internet Protocol Television (IPTV) signal, or other network Multimedia signals transmitted over the Internet. The plurality of multimedia signals include a channel program broadcasted in the IPTV or a multimedia audio and video content selected via Video On Demand (VOD).

The multimedia sharing device 110 converts one or more multimedia materials of the plurality of multimedia materials into one or more audio and video transmission streams, and modulates the one or more audio and video transmission streams into a digital television signal DTV and transmits the same. Wherein, the digital television signal DTV includes one or more programs corresponding to one or more audiovisual transport streams. That is to say, the number of programs in one or more video transmission streams and digital television signals is the same as the number of multimedia display devices 121~12n in the multimedia sharing system 10, that is, the value of n. The multimedia display devices 121~12n respectively receive the digital television signal DTV, and respectively display and play the video transmission stream of one of the one or more programs corresponding to the digital television signal DTV.

The control devices 130 to 13n respectively correspond to the multimedia display devices 121 to 12n, and each of the control devices (one of the control devices 131 to 13n) receives an operation signal (corresponding to one of the control devices 131 to 13n receiving one of the operation signals OS1 to OSn) When the operation signals OS1 to OSn transmit the remote control signals RS1 to RSn to the multimedia sharing device 110, the multimedia display devices (one of the multimedia display devices 120 to 12n) corresponding to the respective control devices (one of the control devices 131 to 13n) are switched. The received video transmission stream in the program of the digital television signal DTV, and/or the playback state of the video transmission stream.

FIG. 2 is a functional block diagram of a multimedia sharing device according to an embodiment of the invention. Referring to FIG. 2, the multimedia sharing device 110 includes a network unit 111, a demultiplexer 112, and transport stream converters 1131 to 113n. The bit television modulator 114, the control unit 115, and the remote control signal receiver 116. The network unit 111 is connected to an external network and receives a network multimedia signal IPSIG such as an IPTV signal. The multiplexer 112 is coupled to the network unit 111, receives the network multimedia signal IPSIG from the network unit 111, and resolves the multiplexed network multimedia signal IPSIG into multimedia data MD1~MDn.

The transport stream converters 1131 to 113n are coupled to the demultiplexer 112, and respectively convert the multimedia data MD1~MDn into the transport streams TS1~TSn corresponding to the received multimedia data MD1~MDn. The digital television modulator 114 is coupled to the transport stream converters 1131 to 113n, multiplexes and remodulates the transport streams TS1 TS TSn into a digital television signal DTV, and transmits the digital television signal DTV. The transport streams TS1~TSn correspond to a plurality of programs in the digital television signal DTV.

It should be noted that in the embodiment of the present invention, the digital television signal DTV conforms to Digital Video Broadcasting (DVB), Advanced Television Systems Committee (ATSC), or Integrated Services Digital (Integrated Services Digital). The digital television standard such as Broadcasting, ISDB), and the present invention is not limited to the above standard. Further, in the present invention, the standards that the multimedia data MD1~MDn and the audiovisual transport streams TS1~TSn in the network multimedia signal IPSIG must conform to are also differently set according to the standard adopted by the digital television signal DTV. The multimedia display devices 121 to 12n are display devices capable of receiving and playing a digital television signal DTV conforming to the above standard, and the present invention is not limited to the above.

For example, when a digital TV signal conforms to the DVB standard, The format of the tone transport streams TS1~TSn conforms to the Transport Stream (TS) format specified in the Moving Picture Experts Group (MPEG-2). When the format of the multimedia materials MD1~MDn included in the network multimedia signal IPSIG is the H.264 video compression standard set by the Joint Video Team (JVT), or other audio and video formats supported by the DVB standard, The transport stream converters 1131 to 113n only need to convert the multimedia data MD1~MDn from the packetized form of the network material to the transport stream format in MPEG2. When the audio and video formats of the multimedia data MD1~MDn included in the network multimedia signal are not supported by DVB, the transport stream converters 1131~113n need to first convert the multimedia data MD1~MDn into a compression standard that DVB can support. (For example, the above-mentioned H.264 video compression standard), the multimedia data MD1~MDn conforming to the aforementioned compression standard are converted into the transmission stream format in MPEG2.

It is worth mentioning that in the general digital television signal DTV, in addition to the audio and video transmission streams of each program (video transmission streams TS1~TSn), program information, such as Program Specific Information (PSI) in the MPEG2 transport stream standard, is included. It is either Service Information (SI) in the DVB or ISDB standard or Program and System Information Protocol (PSIP) in the ATSC standard. In the present invention, the network unit 111 can create and provide the program information SI/PSI to the digital television modulator 114 from the network multimedia signal IPSIG based on the program information related to the multimedia materials MD1~MDn. When the digital television modulator 114 receives the corresponding multimedia data MD1~ MDn, that is, the program information SI corresponding to the video transmission streams TS1~TSn, the digital television modulator 114 can add the program information SI to the digital television signal DTV, and the program information corresponds to each program in the digital television signal DTV. .

Referring to FIG. 2, the control unit 115 is coupled to the remote control signal receiver 116, the network unit 111, and the demultiplexer 112. When the remote control signal receiver 116 receives the remote control signal (one of the remote control signals RS1 to RSn), the remote control signal receiver 116 transmits the remote control signal (one of the remote control signals RS1 to RSn) to the control unit 115. The control unit 115 controls the network unit 111 to receive multimedia data corresponding to the remote control signal (one of the remote control signals RS1~RSn) according to the remote control signal (one of the remote control signals RS1~RSn) (the multimedia materials MD1~MDn) a) the network multimedia signal IPSIG, and the transmission notification NF to the multiplexer 112 transmits the multimedia material (one of the multimedia materials MD1~MDn) corresponding to the remote control signal (one of the remote control signals RS1~RSn) to the remote control One of the transport stream converters 1131 to 113n of the signal (one of the remote control signals RS1 to RSn).

For example, referring to FIG. 1 and FIG. 2, the multimedia display device 121 fixedly receives the program 1 in the digital television signal DTV, corresponding to the content of the video transmission stream TS1. When the viewer of the multimedia display device 121 wants to switch the currently viewed video content, the manipulation control device 131 presses a button for switching the video content (the control device 131 receives the operation signal OS1). The control device 131 transmits the remote control signal RS1 to the multimedia sharing device 110 corresponding to the operation signal OS1.

The control unit 115 of the multimedia sharing device receives the remote control signal After RS1, the command CM is transmitted to the network unit 111 according to the remote control signal RS1 to ensure that the video and audio content specified in the remote control signal RS1 is received by the network unit 111, and the notification NF is simultaneously transmitted to the demultiplexer 112 to notify the demultiplexer 112. The specified video content is transmitted to the transport stream converter 1131 as the multimedia material MD1. In this way, the multimedia display device 121 that fixedly receives the program 1 of the digital television signal DTV switches to play the video content specified by the operation signal.

It is worth mentioning that, in general, the number of multimedia materials included in the network multimedia signal IPSIG received by the network unit 111 exceeds the number of multimedia data MD1~MDn, that is, the value of n. The command CM sent by the control unit 115 ensures that the specified multimedia content, that is, the multimedia material, is included in the multimedia material currently received by the network unit 111. If the multimedia data received by the network unit 111 already has the specified audio and video content, the network unit 111 does not need to send more network multimedia signals to an external network, such as a multimedia server in the external network. Requirements for multimedia materials included in IPSIG. If the currently received multimedia material does not have the specified audio and video content, the network unit 111 issues the above request.

The following is a further description of the interaction between the control device and the multimedia sharing device in the multimedia sharing system. FIG. 3 is a partial functional block diagram of a multimedia sharing device and a functional block diagram of the control device according to an embodiment of the invention. Because of the simplicity of the drawing, the multimedia sharing device 110 only shows the network unit 111, the demultiplexer 112, the control unit 115, and the remote control signal receiver 116, wherein the components are coupled to other units. The relationship is the same as that of the embodiment shown in Fig. 2, and is omitted here. On the other hand, the control device here only uses the control device 131 as an illustrative example, and the control devices 132~13n can be arranged using similar embodiments.

Referring to FIG. 3, the control device 131 includes an input unit 1311, a memory unit 1312, a microcontroller 1313, and a transfer unit 1314. The input unit 1311 is configured to receive the operation signal OS1. The memory unit 1312 stores an identification information ID corresponding to the multimedia display device corresponding to the control device 131 and the control device, that is, the multimedia display device 121. Different control devices, such as control devices 131~13n, have different identification information IDs. The microcontroller 1313 is coupled to the input unit 1311 and the memory unit 1212. When the input unit 1311 receives the operation signal OS1 and transmits the operation signal OS1 to the microcontroller 1313 by the user operation, the microcontroller 1313 transmits the remote control signal RS1 to the transmission unit 1314, wherein the remote control signal RS1 includes an instruction corresponding to the operation signal and Identify the information ID. The transmitting unit 1314 is coupled to the microcontroller 1313. When the transmitting unit 1314 receives the remote control signal RS1 from the microcontroller 1313, the remote control signal RS1 is transmitted to the multimedia sharing device 110.

In the present embodiment, the control unit 115 includes an identification information parser 1151 and an instruction processor 1152. The identification information parser 1151 receives the remote control signal RS1 from the remote control signal receiver 116, and analyzes the identification information ID included in the remote control signal to obtain the recognition result AR. After the identification information parser 1151 obtains the identification result AR, the identification result AR and the instruction OD in the remote control signal RS1 are collectively transmitted to the instruction processor 1152.

The instruction processor 1152 is coupled to the identification information parser 1151, and further transmits the command CM according to the recognition result AR and the instruction OD in the remote control signal. The control network unit 111 receives the network multimedia signal IPSIG including the multimedia material corresponding to the remote control signal 131 from the external network. And, the instruction processor 1152 transmits a notification NF to notify the demultiplexer 112 to transfer the multimedia material corresponding to the instruction OD to one of the transport stream converters corresponding to the recognition result AR, that is, the transport stream converter 1131.

As in the foregoing example, when the viewer of the multimedia display device 121 wants to switch the viewing content, the viewer operates the control device 131 corresponding to the multimedia display device 121 to switch the viewing content (the input unit 1311 receives the operation signal OS1). The microcontroller 1313 creates a remote control signal RS1 including the identification information ID and the command OD based on the content of the operation signal OS1, and transmits it to the multimedia sharing device 110 via the transmission unit 1314. The identification information parser 1151 receives the remote control signal RS1 through the remote control signal receiver 116, and interprets the identification information ID to obtain the recognition result AR. For example, in the embodiment, the identification information parser 1151 knows that the remote control signal RS1 is controlled by the identification information ID. The device 131 is issued.

Next, the identification information parser 1151 transmits the recognition result AR and the instruction OD to the instruction processor 1152. The command processor 1152 transmits the command CM to the network unit 111 according to the identification result AR and the command OD to confirm whether the network unit 111 currently has the specified video content to be switched in the command OD, and if not, the control network unit 111 Send a request to the external network. Furthermore, the notification NF is sent to the demultiplexer 112, and the specified video and audio content is transmitted to the transport stream converter 1131 as the multimedia material MD1, and the current handover is completed. It is worth mentioning that when the viewer manipulates the control device 131 to change the current playing state, such as fast turn, pause, and fall The retreat may be completed in accordance with the above-described flow, and the present invention is not limited to the above embodiment.

In the present invention, the control devices 131~13n may be remote controllers that are generally known to use an infrared interface, and may also transmit remote control signals RS1~RSn through protocols such as Bluetooth or Wireless Fidelity (WiFi). The electronic device is not limited to the above embodiment, and the multimedia sharing device 110 can successfully interpret the identification information ID and the command OD in the remote control signals RS1 to RSn as long as they are matched with the multimedia sharing device 110.

The invention also provides a multimedia sharing method. FIG. 4 is a flow chart showing the steps of a multimedia sharing method according to an embodiment of the invention. Referring to FIG. 4, first at step S401, it is connected to an external network to receive a network multimedia signal. Then, in step S402, the multiplexed network multimedia signal is decomposed into a plurality of multimedia materials. Next, in step S403, one or more multimedia materials in the plurality of multimedia materials are converted into one or more audiovisual transport streams. Further, in step S404, the one or more video transmission streams are modulated into a digital television signal, and the digital television signal is transmitted, wherein the digital television signal includes one or more programs corresponding to one or more audiovisual transmission streams. For detailed implementations of the foregoing methods, reference may be made to the description of the foregoing embodiments and the corresponding embodiments, and details are not described herein again.

FIG. 5 is a schematic diagram of an implementation of a multimedia sharing system according to an embodiment of the invention. Referring to FIG. 5, the multimedia sharing system 50 is disposed in an apartment. The multimedia sharing system 50 includes a multimedia sharing device 510 and a multimedia display device 521 disposed in each room. 524. Each of the multimedia display devices 521-524 also has corresponding control devices 531-534. As described in the above embodiment, the control devices 531 to 534 transmit the remote control signals to the multimedia sharing device 510 instead of the multimedia display devices 521 to 524.

In the present embodiment, the multimedia display devices 521-524 can wirelessly receive the digital television signals transmitted by the multimedia sharing device 510 and conform to the DVB standard (shown in solid lines), and the multimedia display devices 521-524 are sequentially fixed. Program 1 to program 4 for watching digital TV signals. If the apartment is reserved for physical wiring, such as a coaxial cable line, the digital television signal can also be transmitted from the multimedia sharing device 510 to the multimedia display devices 512-524 via the physical line. Similarly, the control devices 531-534 can wirelessly transmit remote control signals (shown in dashed lines) to the multimedia sharing device 510, and can also be transmitted through physical lines. When the viewer of the multimedia display device 521 wants to turn the station, the remote control signal is sent to the multimedia sharing device 510 through the control device 531, and the multimedia sharing device 510 can switch the content of the program 1 in the digital television signal according to the remote control signal.

In summary, the present invention provides a multimedia sharing system, apparatus, and method, such that a viewer of each multimedia display device in the system can independently transmit a remote control signal to the multimedia sharing device through the control device, and switch the image to be viewed. Content, or adjust the status of the current viewing content, such as suspending fast forwarding, rewinding and other functions. Compared with the conventional multimedia display system for receiving network multimedia signals, the present invention can share multimedia content of a single signal source to a plurality of multimedia display devices, and each multimedia display device can independently view different contents, as Multimedia display The device has its own channel selection capability. Furthermore, the multimedia sharing device is transmitted to each multimedia display device in a wireless or wired manner through a standard digital television signal such as DVB, so that the setting positions and setting manners of the respective multimedia devices in the system are increased in flexibility.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the invention, and any one of ordinary skill in the art can make some modifications and refinements without departing from the spirit and scope of the invention. The scope of the invention is defined by the scope of the appended claims.

10, 50‧‧‧Multimedia Sharing System

110, 510‧‧‧Multimedia sharing device

111‧‧‧Network Unit

112‧‧‧Demultiplexer

1131~113n‧‧‧Transport Stream Converter

114‧‧‧Digital TV Tuner

115‧‧‧Control unit

1151‧‧‧ Identification Information Parser

1152‧‧‧ instruction processor

116‧‧‧Remote signal receiver

121~12n, 521~524‧‧‧ multimedia display device

131~13n, 531~534‧‧‧ control device

IPSIG‧‧‧ Network Multimedia Signal

MD1~MDn‧‧‧Multimedia

TS1~TSn‧‧‧Video Transmission Stream

SI‧‧‧Program Information

CM‧‧ order

OD‧‧‧ directive

NF‧‧ Notice

ID‧‧‧ Identification Information

AR‧‧‧Recognition results

DTV‧‧‧ digital TV signal

RS1~RSn‧‧‧Remote signal

OS1~OSn‧‧‧ operation signal

S401~S404‧‧‧Steps

FIG. 1 is a system block diagram of a multimedia sharing system according to an embodiment of the invention.

FIG. 2 is a functional block diagram of a multimedia sharing device according to an embodiment of the invention.

FIG. 3 is a partial functional block diagram of a multimedia sharing device and a functional block diagram of a control device according to an embodiment of the invention.

FIG. 4 is a flow chart showing the steps of a multimedia sharing method according to an embodiment of the invention.

FIG. 5 is a schematic diagram of an implementation of a multimedia sharing system according to an embodiment of the invention.

10‧‧‧Multimedia Sharing System

110‧‧‧Multimedia sharing device

121~12n‧‧‧Multimedia display device

131~13n‧‧‧Control device

IPSIG‧‧‧ Network Multimedia Signal

DTV‧‧‧ digital TV signal

RS1~RSn‧‧‧Remote signal

OS1~OSn‧‧‧ operation signal

Claims (17)

A multimedia sharing system, comprising: a multimedia sharing device, receiving a network multimedia signal, wherein the network multimedia signal comprises a plurality of multimedia materials, the multimedia sharing device converting at least one multimedia material of the plurality of multimedia materials into at least one video and audio Transmitting, converting, and transmitting the at least one video transmission stream to a digital television signal, wherein the digital television signal comprises at least one program corresponding to the at least one audiovisual transmission stream; and at least one multimedia display device respectively receiving the digital television signal And respectively displaying and playing the video transmission stream of the at least one of the digital television signals corresponding to the digital television signal; and at least one control device corresponding to the at least one multimedia display device, respectively, when each of the control devices receives When operating the signal, transmitting a remote control signal to the multimedia sharing device corresponding to the operation signal to switch the video transmission stream in the program of the digital television signal received by the multimedia display device corresponding to the control device, and / or adjust the playback state of the video transport stream . The system of claim 1, wherein the multimedia sharing device comprises: a network unit connected to an external network to receive the network multimedia signal; and a demultiplexer coupled to the network unit, Receiving the network multimedia signal and demultiplexing the network multimedia signal into the multimedia materials; at least one transport stream converter coupled to the demultiplexer, respectively receiving the At least one of the plurality of multimedia materials, and the at least one multimedia data is converted into the at least one audio and video transmission stream; a digital television modulator coupled to the at least one transport stream converter to receive the at least one audio and video transmission stream, The at least one video transmission stream is modulated to the digital television signal, wherein the digital television signal includes the at least one program corresponding to the at least one video transmission stream. The system of claim 2, wherein the digital television signal further comprises a program information corresponding to each of the digital television signals. The system of claim 2, wherein the multimedia sharing device further comprises: a remote control signal receiver; and a control unit coupled to the remote control signal receiver, the network unit, and the demultiplexer, wherein When the remote control signal receiver receives the remote control signal, the remote control signal receiver transmits the remote control signal to the control unit, and the control unit controls the network unit to receive from the external network according to the remote control signal, and includes corresponding to the remote control signal. And the network multimedia signal of the multimedia material, and notifying the demultiplexer to transmit the multimedia material corresponding to the remote control signal to one of the at least one transport stream converter corresponding to the remote control signal. The system of claim 4, wherein each of the control devices comprises: an input unit for receiving the operation signal; and a memory unit corresponding to the control device and the control device Corresponding information of the multimedia display device; a microcontroller coupled to the input unit and the memory unit, when the input unit receives the operation signal and transmits the operation signal to the microcontroller, the microcontroller transmits Transmitting the remote control signal to the transmitting unit, wherein the remote control signal includes an instruction corresponding to the operation signal and the identification information; and a transmitting unit coupled to the microcontroller, when receiving the remote control signal from the microcontroller Transmitting the remote control signal to the multimedia sharing device. The system of claim 5, wherein the control unit of the multimedia sharing device comprises: an identification information parser, receiving the remote control signal from the remote control signal receiver, and parsing the identification information included in the remote control signal Obtaining a recognition result; an instruction processor coupled to the identification information parser, and controlling, according to the recognition result and the instruction in the remote control signal, the network unit to receive the multimedia corresponding to the remote control signal from the external network And a network multimedia signal of the data, and notifying the demultiplexer to transmit the multimedia material corresponding to the instruction to one of the at least one transport stream converter corresponding to the identification result. The system of claim 1, wherein the at least one multimedia display device receives the digital television signal in a wireless manner or in a wired manner. A multimedia sharing device includes: a network unit connected to an external network to receive a network multimedia a signal multiplexer coupled to the network unit, receiving the network multimedia signal and demultiplexing the network multimedia signal into a plurality of multimedia materials; at least one transport stream converter coupled to the multiplexer Receiving at least one multimedia data of the multimedia materials, and respectively converting the at least one multimedia data into at least one audio and video transmission stream; a digital television modulator coupled to the at least one transport stream converter to receive the at least one video and audio Transmitting the stream, modulating the at least one video transmission stream to a digital television signal and transmitting the digital television signal to the at least one multimedia display device, wherein the digital television signal comprises at least one program corresponding to the at least one video transmission stream. The device of claim 8, wherein: the digital television signal further comprises a program information corresponding to each program in the digital television signal. The device of claim 8, wherein the device further comprises: a remote control signal receiver; and a control unit coupled to the remote control signal receiver, the network unit, and the demultiplexer, wherein When the remote control signal receiver receives a remote control signal, the remote control signal receiver transmits the remote control signal to the control unit, and the control unit controls, according to the remote control signal, the network unit to receive from the external network, including the remote control signal. The multimedia signal of the multimedia material, and notifying the demultiplexer to transmit the multimedia material corresponding to the remote control signal to the pair One of the at least one transport stream converters of the remote control signal. The system of claim 10, wherein: the remote control signal comprises an identification information corresponding to one of the at least one multimedia display device and an instruction; and the control unit of the multimedia sharing device comprises: an identification information a parser, receiving the remote control signal from the remote control signal receiver, and parsing the identification information included in the remote control signal to obtain a recognition result; an instruction processor coupled to the identification information parser, according to the recognition result and the remote control The instruction in the signal controls the network unit to receive, from the external network, a network multimedia signal including the multimedia material corresponding to the instruction, and notifying the demultiplexer to transmit the multimedia material corresponding to the instruction to a corresponding One of the at least one transport stream converters that identifies the result. The system of claim 8, wherein the multimedia sharing device transmits the digital television signal in a wireless manner or in a wired manner. A multimedia sharing method includes: connecting to an external network to receive a network multimedia signal; and demultiplexing the network multimedia signal into a plurality of multimedia materials; converting at least one multimedia material of the plurality of multimedia materials into at least one audio and video transmission stream And modulating the at least one video transmission stream as a digital television signal and transmitting the digital television signal, wherein the digital television signal includes at least At least one program of a video transmission stream. The method of claim 13, wherein: the digital television signal further comprises a program information corresponding to each program in the digital television signal. The method of claim 13, wherein the method further comprises: when receiving a remote control signal, controlling a network unit to receive the network including the multimedia material corresponding to the remote control signal from the external network And the notification multiplexer transmits the multimedia material corresponding to the remote control signal to one of the at least one transport stream converter corresponding to the remote control signal. The method of claim 15, wherein the step of controlling the network unit and notifying the demultiplexer further comprises: parsing an identification information included in the remote control signal to obtain a recognition result; according to the recognition result And an instruction in the remote control signal controls the network unit to receive a network multimedia signal including the multimedia material corresponding to the instruction; notifying the demultiplexer to transmit the multimedia material corresponding to the instruction to correspond to the identification The result is one of the at least one transport stream converter. The method of claim 13, wherein the transmitting the digital television signal comprises transmitting the digital television signal in a wireless manner or in a wired manner.