TWI384801B - Ip-based hometown tv program delivery system - Google Patents

Description

TV program delivery system using IP network

The present invention relates to a television program delivery system implemented using an IP network, and more particularly to a television program delivery system for transmitting television programs from a server to a client.

In view of the development of Internet technology, the Internet has become an indispensable part of people's daily life. Almost all work, entertainment, shopping or education are related to the Internet, which not only changes the people's original life style, but also Created a new economic model.

IP digital TV has been developed in this context for many years. People only need to install special software or equipment (such as a set-top box) on their personal computers to watch TV programs on the Internet at home or at any designated location. However, watching TV episodes or entertainment programs via the Internet often causes poor image quality, and digital TV manufacturers usually do not guarantee the quality of the image quality. In addition, most foreign TV program providers, digital TV providers and Internet service providers are also unable to provide TV content in the second foreign language in their mother tongue. For example, it is difficult for Asian Americans to watch TV programs in Asia. .

In today's Internet-developed generation, there is a growing need for people to quickly watch TV programs over the Internet. However, the traditional user/server network architecture (client/server network), as shown in the first figure, often fails to provide sufficient bandwidth while the central server cannot load huge download traffic, resulting in the needs of the public. Satisfy. In the case of network congestion, for example, many users download a certain video content at the same time, the user will spend a lot of time to download the complete video file from the server.

In summary, please refer to the first figure, which is a traditional IP architecture network TV system. The conventional IP network television system 10 includes a TV content broadcasting center 11 that is responsible for transmitting television program content to the client via the network. However, if the IP network television system 10 only provides television programs produced in English, non-English speaking users cannot watch other language programs, such as Chinese users at the user terminal, and Korean users at the user terminal. The Japanese users 15 located at the user side also want to watch the TV programs of their native language through the television program playing center 11, but at this stage, the network television system 10 cannot select the TV programs of different languages that the user likes according to different language types. Therefore, the user's needs cannot be met.

An image communication/bidirectional broadcast system, which can be transmitted through a multi-frequency integrated service digital network (ISDN), a cable television provider, or even an advertisement, in the prior art, US Patent No. 5,027,400. The commercial two-way broadcast system meets the different needs of users for TV programs. However, this invention still cannot provide anytime, anywhere services, such as providing relevant TV programs when users go abroad.

In the prior art, U.S. Patent No. 6,973,667 proposes a method of multicasting or unicasting television program content, wherein each multi-cast or single broadcast unit is separately broadcasted. Or a single broadcast mode to transmit data packets to deliver the media program to the user. Although the invention also provides a special time-shifting feature for the user, it still cannot solve the user's desire to watch anytime, anywhere. The issue of related TV shows.

U.S. Patent No. 20030097661 in the prior art proposes another system for providing IP centric services, multi-channel services, telecommunication services, in response to popular television programs, karaoke, Demand for the phone. However, the purpose of this invention is only to provide people with English-oriented TV program content, lack of multi-language program selection services, and people still cannot watch TV programs in specific languages.

In some cases, when people subscribe to TV programs to local TV program providers, they usually want to watch these TV programs simultaneously during the long-distance travel. However, local TV program providers cannot meet such needs, so how to provide users The TV program delivery system that can be watched over the Internet anytime and anywhere is an urgent problem for the industry.

To address the deficiencies of the prior art, the present invention proposes a television program delivery system implemented using an IP network. A television program delivery system implemented using an IP network, comprising at least one television program provider for supplying a plurality of channels of television programs, and at least one agent at the server for converting television programs into a plurality of digital video content The agent is characterized in that the agent provides digital audio and video content to an authorized user at the user terminal via a broadcast network, wherein the authorized user at the user terminal is a subscriber of the television program provider, and has the right to view the television programs.

The television program delivery system according to the above IP network technology may be a P2P network including at least one video head-end server, at least one relay server, and at least one seed host (seed host) ), a plurality of peer hosts, at least one network management server, and at least one system management server. The headend server is configured to receive a plurality of digital audio and video content converted from a television program, and the headend server includes a video clipper for cutting each digital audio and video content into a plurality of video and audio files. Each video file is composed of a plurality of groups of pictures (GOPs), and the head end server further includes at least one program content storage device for storing corresponding digital audio and video content. Video files. The transmitting server receives the video files of the headend server and broadcasts the video files from the transmitting server. The seed host is configured to receive video files from the delivery server and broadcast the video files from the seed host. The user host enables the authorized user to receive the video files transmitted from the seed host or other user hosts in the vicinity, and broadcast the video files. The network management server is configured to manage data and signal communications between the seed host and the user host, and the network management server includes at least one tracker, according to the authorized user. The use of the file requests to generate a list of sub/users. The system management server can verify the authentication and authorization of each authorized user upon receiving an access request from each authorized user. Each of the UEs includes a player for playing the video files.

According to the television program transmission system architecture of the above IP network technology, a broadcast network is provided, which includes a broadcasting apparatus for storing and broadcasting the digital audio and video content, and a plurality of players, via video and audio. The way of video streaming is such that an authorized user of the client can receive digital audio and video content from the broadcast device via the player. The broadcast device includes a time zone shifting means, a time zone non-shifting means, a language selecting means, and a user profile means. ). The time zone adjuster can adjust the time difference between the original overseas broadcast place and the authorized user to view the location of the television program, and transmit the digital audio and video content to the player according to the viewing period of each authorized user. The time zone non-adjuster is configured to transmit the corresponding digital audio and video content to the player in a quasi-real time manner, and the digital audio and video content transmitted by the broadcast device to the player can be controlled in a tolerable time. Within the delay range. The language selector can provide digital audio and video content produced by the relative language according to the language type selected by the authorized user on the player. The user setter can collect and analyze the usage data of each authorized user in the player when each player enters the broadcast network to establish a user profile of the authorized user.

Accordingly, it is a primary object of the present invention to provide a television program delivery system implemented using an IP network, wherein the server includes at least one agent to convert a plurality of television programs of the television program provider into a plurality of digital video content. The digital audio and video content is provided to the user, and the user is a subscriber of the television program provider and authorized by the agent to solve the problem that the user cannot watch the local program abroad.

Another object of the present invention is to provide a television program delivery system implemented by using an IP network, wherein the server includes at least one agent to convert a plurality of television programs of the television program provider into a plurality of digital video and audio content, and These digital audio and video content is provided to users who have been authorized by the agent, and the agent has subscribed to the television program provider for the content of the above television program to solve the problem that the user cannot watch the local program abroad.

The present invention provides a television program delivery system implemented by using an IP network, which converts television programs into digital audio and video content through network playback, wherein the network communication used has common knowledge in the related art. The person can understand, so the description below will not be fully described. At the same time, the drawings referred to in the following texts express the structural schematics related to the features of the present invention, and need not be completely drawn according to the actual size, which is first described.

Referring first to Figure 2a, a first preferred embodiment of the present invention is a television program delivery system implemented using an IP network. An IP-based hometown TV program delivery system (20) includes at least one television program provider 21 and an agent 22 (agency). The television program provider 21 provides television programs of a plurality of channels, which are produced locally by the television program provider 21, such as Taiwan in Asia. The agent 22 is located at the server-end to convert the television program into a corresponding plurality of digital video contents, and provides the digital audio and video content to the authorized user 23 of the user via a broadcast network 24. The authorized user 23 of the client may be located in California, USA. In addition, the authorized user 23 of the user terminal is the subscriber of the television program provider, and has the right to view the digital audio and video content, and the agent 22 uses the subscription relationship to obtain the television program provided by the television program provider 21. And converting it into digital audio and video content, and providing it to the authorized user 23 of the user terminal via the above broadcast network 24. If the authorized user 23 does not subscribe to the television program 21 to any of the television program providers 21, the agent 22 will neither subscribe to any of the television program providers 21 nor any digital video content to the authorized user 23.

In the above embodiment, the broadcast network 24 may be a P2P network (Peer-to-Peer based network) or a TCP/IP based network, etc., to transmit digital audio and video content to authorized users. . In addition, the television program provider 21 may be a cable operator or a satellite TV program provider, or other provider of television programs, and the like. In addition, the authorized user 23 of the client and the television program provider 21 can be located in different towns, different countries, or different geographical regions. The content of the TV program is produced in one of Taiwan, Hong Kong, Macau, China, Korea, Japan, India and Vietnam, and the authorized users of the user can be located in the United States and Canada. area. Or the authorized user of the user can be located in one of Taiwan, Hong Kong, Macau, China, Korea, Japan, India and Vietnam, and the content of the TV program can be derived from one of the United States and Canada. Produced by the region.

The user terminal includes a terminal for playing the digital audio and video content, and the terminal device can be selected from a laptop, a desktop computer, a television, a Personal Digital Assistant (PDA), or Wireless phones and more.

In the above embodiment, the television program delivery system 20 implemented using an IP network can operate in the case of a plurality of television program providers 21 or a plurality of agents 22.

Referring to Figure 2b, a P2P network is proposed in accordance with a first preferred embodiment of the present invention. The P2P network 25 is a specific implementation of the broadcast network 24 (as shown in FIG. 2A), which includes a video head-end server (250), a transport server 251 (relay server), and a seed. A host 252 (seed host), a plurality of user hosts 253 (peer hosts), a network management server 254 (network management server), and a system management server 255 (system management server). The video head-end server 250 can be located in Taiwan or the like for receiving digital audio and video content converted from a television program. The headend server 250 includes a video clipper for cutting each digital video content into a plurality of video files, and each video file is a minimum unit transmitted by the P2P network 25, and is composed of a plurality of pictures. Composition of groups of pictures (GOPs). The headend server 250 further includes at least one program content storage device for storing video files corresponding to the digital video content. The delivery server 251 can be located in the United States or the like to receive the video files of the headend server 250 located in Taiwan or the like via FTP (file transfer protocol). The seed host 252 is configured to receive the video files from the delivery server 251, and the user host 253 can receive the video files from the seed host 252 or other user hosts 253 via the P2P network, respectively. The network management server 254 is configured to manage data and signal communications between the seed host 252 and the user host 253 to collect all network information. The network management server 254 includes a plurality of trackers to generate a sub/user list based on the use request of the authorized user 23 for the video files. When the authorized user 23 wants to watch the local TV program abroad, an access request is made to the system management server 255, and the system management server 255 will inform the user 23 of the time channel information (session-channel info Authentication and authorization are performed to verify the channel and time period that each authorized user 23 can watch.

Referring to the second c-figure, another P2P network is proposed in accordance with the first preferred embodiment of the present invention. The P2P network 25 is another embodiment of the broadcast network 24 (such as the second diagram), including at least one delivery server 251, a seed host 252, a plurality of user hosts 253, and a network management server. 254. A system management server 255. The delivery server 251 can be located in the United States or the like and is used to receive digital audio and video content of the headend server 250 located in Taiwan and the like via FTP. The headend server 250 is configured to receive digital audio and video content converted by the television program to transmit the digital audio and video content to the delivery server 251 via FTP. The delivery server 251 further includes at least one program content repository for receiving digital audio and video content from the headend server 250. The delivery server 251 further includes a film splitter for cutting each digital audio and video content into a plurality of video files, and each video file is composed of a plurality of groups of pictures (GOPs). Composition. The seed host 252 is configured to receive the video files from the delivery server 251, and the user host 253 can receive the video files from the seed host 252 or other user hosts 253 via the P2P network, respectively. The network management server 254 is configured to manage data and signal communications between the seed host 252 and the user host 253 to collect information about all networks. The network management server 254 includes a plurality of trackers that generate a sub/user list based on the use of the video files by the authorized user 23. When the authorized user 23 wants to watch the local TV program abroad, an access request is made to the system management server 255, and the system management server 255 will prompt the channel information (session-channel) proposed by the user 23. Info) Perform authentication and authorization to verify the channel and time period that each authorized user 23 can watch.

Please refer to FIG. 2D, which is a film cutter for cutting each video file into a plurality of groups of pictures (GOPs) on a P2P network according to a first preferred embodiment of the present invention. . The picture group is the smallest unit constituting each video file, and the size of each picture group can be changed or fixed. The film cutter cuts according to the boundary of the picture group of each video file, so that when the video file is transmitted to the user terminal, the problem of image distortion does not occur.

Please refer to the second e diagram, which is another broadcast network according to the first preferred embodiment of the present invention. The broadcast network 26 includes a broadcasting apparatus 27 and a plurality of players 28 (players). The broadcast device 27 is used to store and broadcast digital audio and video content, and the player 28 enables the authorized user 23 of the user terminal to receive the digital audio and video content from the broadcast device 27 via video streaming. The broadcast device 27 includes a time zone shifting means 270, a time zone non-shifting means 271, a language selecting means 272, and a user setter 273 ( a user profile means). The time zone adjuster 270 can adjust the time difference of the television program at the original overseas broadcast place (for example, in Taiwan) and the authorized user 23 to view the location (for example, in California), so that the broadcast device 27 will display the viewing time according to each authorized user 23 The digital audio and video content is transmitted to the player 28. The time zone non-adjuster 271 is configured to transmit the corresponding digital video and audio content to the player 28 in a quasi-real time manner. The language selector 272 can provide the television program produced by its selected language based on the language type selected by the authorized user 23 on the player 28. The user setter 273 can collect and analyze the related data of each authorized user 23 on the network from the player 28 when each player 28 enters the broadcast network 26 to establish each authorized user. Use the user profile.

The broadcast device described above further includes one or more servers (not labeled) for performing at least one video storage, video stream, web accessing, proxy managing on the broadcast network 24. And operations such as cache buffering. The broadcast device 27 further includes a user community means (not labeled) and a plurality of virtual servers (not labeled) activated via the broadcast device 27. The user grouper can organize one or more user groups according to the characteristics of each authorized user 23, and provide each authorized user 23 customized digital audio and video service according to the preference of each user group. . In addition, the quality of the service and the transmission bandwidth of the digital audio and video content transmitted to the player 28 via the network can be improved via the virtual server activated by the broadcast device 27. The time zone non-adjuster 271 described above can control the digital audio and video content transmitted by the broadcast device 27 to the player 28 within a tolerable time delay range, such as within a few seconds.

Referring to FIG. 3A, a second preferred embodiment of the present invention is a television program delivery system implemented using an IP network. The television program delivery system 30 implemented using an IP network includes at least one television program provider 31 and a server 32 of a server. The television program provider 31 can supply television programs of a plurality of channels. The agent 32 of the server can convert the television program into a plurality of digital audio and video content, and transmit the digital audio and video content to an authorized user 33 of the user terminal in the United States via a broadcast network 34. Compared with the second a picture, the difference is that the agent 32 in the third a picture has directly subscribed to the television program provider 31 for the television program, and enjoys receiving the television program and converting the content of the television program into the corresponding digital audio and video content. Right. The authorized user 33 can view the digital audio and video content provided by the agent 32 via the broadcast network 34 without being authorized by the agent 32 to subscribe to the content of the television program to the television program provider 31. The broadcast network 34 described above may be a P2P network (Peer-to-Peer based network) or a TCP/IP based network to reduce bandwidth consumption. The television program provider 31 described above may be a cable operator, a satellite TV program provider, or other provider of television programs. The authorized user 33 of the above-mentioned user terminal and the television program provider 31 may be located in different towns, different countries, or different geographical areas. The content of the TV program is produced in one of Taiwan, Hong Kong, Macau, China, Korea, Japan, India and Vietnam, and the authorized user of the user 33 can be located in the United States and Canada. Area. Or the authorized users of the user are located in one of Taiwan, Hong Kong, Macau, China, Korea, Japan, India and Vietnam, and the content of the TV program can be derived from one of the United States and Canada. Made. The client includes a terminal, and the terminal device can be selected from a laptop, a desktop computer, a television, a Personal Digital Assistant (PDA), or a wireless telephone.

Referring to the third b-picture, a P2P network is proposed according to the second preferred embodiment of the present invention. The P2P network 35 is a specific implementation of the broadcast network 34 (such as the third a diagram), and includes a video head-end server (350), a transport server 351 (relay server), and a seed host. 352 (seed host), a plurality of user hosts 353 (peer hosts), a network management server 354 (network management server), and a system management server 355 (system management server). The video head-end server 350 can be located in Taiwan or the like for receiving digital audio and video content converted from a television program. The headend server 350 includes a video clipper that cuts each digit of the audio and video content into a plurality of video files, each video file being a minimum unit transmitted by the P2P network, which is composed of a plurality of picture groups. (groups of pictures, GOPs). The headend server 350 further includes at least one program content storage for storing video files corresponding to each digital video content. The delivery server 351 can be located in the United States or the like, and receives video files from the headend server 350 in Taiwan or the like via an FTP (file transfer protocol) method. The seed host 352 can receive the video files from the delivery server 351, and the user host 353 can receive the video files from the seed host 352 or other user hosts 353 via the P2P network, respectively. The network management server 354 is configured to manage data and signal communications between the seed host 352 and the user host 353 to collect all network information. The network management server 354 includes a plurality of trackers to generate a seed/user list based on the authorized user's use of the video file. When the authorized user 33 wants to watch the local TV program abroad, an access request is made to the system management server 355, and the system management server 355 will inform the user 33 of the time channel information (session-channel info ) Authenticate and authorize to verify the channel and time period that each authorized user 33 can watch.

Referring to the third c-picture, another P2P network is proposed in accordance with the second preferred embodiment of the present invention. The P2P network 35 is another embodiment of the broadcast network 34 (such as the third diagram), including a delivery server 351, a seed host 352, a plurality of user hosts 353, a network management server 354, and a System management server 355. The transmission server 351 can be located in the United States or the like, and is used to receive the audio and video content of the headend server 350 located in Taiwan and the like via FTP. The headend server 350 can convert the television program into a plurality of digital audio and video content, and transmit the digital audio and video content to the delivery server 351 via FTP. The delivery server 351 further includes at least one program content storage for receiving digital audio and video content from the headend server 350. The delivery server 351 further includes a video clipper for cutting each digital audio and video content into a plurality of video files, and each video file is composed of a plurality of groups of pictures (GOPs). Composition. The seed host 352 is configured to receive the video files from the delivery server 351, and the user host 353 can receive the video files from the seed host 352 or other user hosts 353 via the P2P network 35, respectively. The network management server 354 is configured to manage data and signal communications between the seed host 352 and the user host 353 to collect all network information. The network management server 354 includes a plurality of trackers to generate a sub/user list based on the use of the video files by the authorized user 33. When the authorized user 33 wants to watch the local TV program abroad, an access request is made to the system management server 355, and the system management server 355 will inform the user 33 of the time channel information (session-channel info ) Authenticate and authorize to verify the channel and time period that each authorized user 33 can watch. The above-described film cutter has the features of the invention as described in the foregoing first embodiment, please refer to the second d diagram.

The above description is only the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. The above description should be understood and implemented by those skilled in the relevant art, so that the other embodiments are not disclosed. Equivalent changes or modifications made under the spirit shall be included in the scope of the patent application.

10. . . Traditional IP network television system (previous technology)

11. . . TV show center

12. . . Internet

13,14,15. . . user terminal

190. . . Video file

20,30. . . TV program delivery system using IP network

21,31. . . TV program provider

22,32. . . Agent

23,33. . . Authorized user

24,34. . . Broadcast network

25,35. . . P2P network

250,350. . . Headend server

251,351. . . Transfer server

252,352. . . Seed host

253,353. . . User host

254,354. . . Network management server

255,355. . . System management server

26. . . Broadcast network

27. . . Broadcasting device

270. . . Time zone adjuster

271. . . Time zone non-regulator

272. . . Language selector

273. . . User setter

28. . . player

The first figure is a schematic diagram of a prior art of a conventional broadcast system.

The second a diagram is a schematic diagram of a television program delivery system implemented using an IP network in accordance with a first preferred embodiment of the present invention.

Figure 2b is a schematic diagram of a P2P broadcast network used in the first preferred embodiment of the present invention.

The second c-figure is a schematic diagram of another P2P broadcast network used in the first preferred embodiment of the present invention.

The second diagram is a schematic diagram showing a structure in which a video file is cut into a plurality of picture groups according to the first preferred embodiment of the present invention.

The second e-figure is a schematic diagram of yet another broadcast network used in the first preferred embodiment of the present invention.

Figure 3a is a schematic diagram showing a television program delivery system implemented using an IP network in accordance with a second preferred embodiment of the present invention.

Figure 3b is a schematic diagram of a P2P broadcast network used in a second preferred embodiment of the present invention.

The third c-figure is a schematic diagram showing another P2P broadcast network used in the second preferred embodiment of the present invention.

20. . . TV program delivery system using IP network

twenty one. . . TV program provider

twenty two. . . Agent

twenty three. . . Authorized user

twenty four. . . Broadcast network

Claims (16)

An IP-based hometown TV program delivery system includes at least one television program provider for supplying a plurality of channels of television programs, and at least one of which is located at a server end (server-end) The agency can convert the television program into a corresponding plurality of digital video contents; the feature is that the agent transmits the digital audio and video content to the client to obtain the agent via a broadcast network. An authorized user, wherein the transmitted digital audio and video content is obtained by the user from a user authorized by the agent to subscribe to the television program provider and converted by the agent, wherein the The broadcast network is a P2P network (Peer-to-Peer based network), wherein the P2P network includes: at least a video head-end server for receiving the plurality of video programs converted from the television programs. a digital audio and video content, the headend server includes a video clipper (splitter) for cutting each digital audio and video content into a plurality of video files. Each video file is composed of a plurality of groups of pictures (GOPs), the head end server further comprising at least one program content storage device for storing corresponding digits a plurality of video files of the audio and video content; at least one relay server for receiving a plurality of video files of the head end server and broadcasting the video files from the transmitting server; at least one sub host (seed host </ RTI> for receiving a plurality of video files from the delivery server and broadcasting the video files from the seed host; a plurality of peer hosts, such that the authorized user can receive from the seed host via the seed Host) or audio and video files transmitted by neighboring user hosts (peer hosts) and broadcast the video files; at least one network management server for managing data and signals between the seed host and the user host Data and signal communications, and the network management server includes at least one tracker, according to the authorized user Using a request to generate a seed/peer list; and at least one system management server to verify each of the access requests from each authorized user Authorized user authentication and authorization; each of the clients includes a player for playing the audio and video files. A television program delivery system implemented using an IP network according to claim 1 of the scope of the patent application, wherein the broadcast network is a TCP/IP based network. A television program delivery system implemented using an IP network according to claim 1 of the scope of the patent application, wherein the television program provider is a cable operator. A television program delivery system implemented using an IP network according to claim 1 of the scope of the patent application, wherein the television program provider is a satellite TV program provider. A television program delivery system implemented using an IP network according to claim 1 of the scope of the patent application, wherein the authorized user of the client is located in a different town from the television program provider. A television program delivery system implemented using an IP network according to claim 1 of the scope of the patent application, wherein the authorized user of the client is located in a different country from the television program provider. A television program delivery system implemented using an IP network according to claim 1 of the patent application, wherein the authorized user of the client is located in a different geographical area from the television program provider. A television program delivery system implemented using an IP network according to claim 1 of the scope of the patent application, wherein the content of the television programs is selected from Taiwan, Hong Kong, Macau, China, Korea, Japan, India, Vietnam, etc. The area is formed by one of the groups; and the authorized user of the user is located in the United States or Canada. The television program delivery system implemented by using an IP network according to claim 1 of the patent application scope, wherein the authorized user of the user terminal is selected from Taiwan, Hong Kong, Macao, China, Korea, Japan, India, Vietnam, etc. The region in which one of the groups is formed; the content of such television programs is derived from the United States or Canada. The television program delivery system implemented by using an IP network according to claim 1, wherein the user terminal further comprises a terminal device, and the terminal device is selected from a laptop computer, One of a group consisting of a desktop computer, a television, a personal digital assistant (PDA), and a wireless telephone. An IP-based hometown TV program delivery system includes at least one television program provider for supplying a plurality of channels of television programs, and at least one of which is located at a server end (server-end) The agency can convert the television program into a corresponding plurality of digital video contents; the feature is that the agent transmits the digital audio and video content to the client to obtain the agent via a broadcast network. An authorized user, wherein the transmitted digital audio and video content is obtained by the user from a user authorized by the agent to subscribe to the television program provider and converted by the agent, wherein the The broadcast network includes a broadcasting apparatus for storing and broadcasting the digital audio and video content, and a plurality of players, via video streaming, for the authorized user to use the broadcaster a player for playing digital audio and video content from the broadcast device; wherein the broadcast device includes: a time zone adjuster ( a time zone shifting means for adjusting the time difference between the original overseas broadcast location and the authorized user's viewing location, so that the digital video content is transmitted to the player according to the viewing period preferred by each authorized user; a time zone non-shifting means for transmitting the corresponding digital video and audio content to the player in a quasi-real time manner; a language selecting means Providing, according to the language type selected by the authorized user on the player, the digital audio and video content produced by the corresponding language; and a user profile means, when each player enters the broadcast In the network, the usage data of each authorized user in the player is collected and analyzed to establish a user profile of each authorized user. A television program delivery system implemented using an IP network according to claim 11 wherein the broadcast device further comprises one or more servers for performing at least one video storage, video streaming, web accessing. Proxy managing and cache buffering Waiting for the operation. The television program delivery system implemented by using the IP network according to Item 11 of the application scope further includes a user community means for organizing one or more according to the characteristics of each authorized user. User groups, and according to the preferences of each user group, provide a digital video service customized by each authorized user. The television program delivery system implemented by using the IP network according to Item 11 of the application scope further includes a plurality of virtual servers activated by the broadcast device for improving digital audio and video content transmitted to the player. service quality. The television program delivery system implemented by using an IP network according to claim 11 wherein the time zone non-shifting means can control the digital audio and video content transmitted from the broadcast device to the player. Tolerance within the time delay. A television program delivery system implemented using an IP network, comprising at least one television program provider for supplying a plurality of channels of television programs, and at least one agent at the server for converting the television programs into corresponding a plurality of digital audio and video content; wherein the agent can transmit the digital audio and video content to a user authorized by the agent, wherein the agent has subscribed to the television program provider for the television program The digital audio and video content obtained by the TV program conversion is transmitted to the user authorized by the agent via a P2P based network, wherein the P2P network includes: at least one head server for receiving a plurality of For digital audio and video content, the headend server includes a video clipper for cutting each digital video content into a plurality of video files, and each video file is composed of a plurality of picture groups (group of pictures). , the GOPs); wherein the headend server further includes at least one program content storage device And a plurality of video files for storing video content corresponding to each digit; comprising at least one relay server for receiving video files from the video head server and broadcasting the video files; including at least one a seed host for receiving the video file of the delivery server and broadcasting The video files; a plurality of peer hosts, such that the authorized user can receive the audio and video files transmitted from the seed host or the neighboring peer hosts, and broadcast the audio and video files. At least one network management server for managing data and signal communications between the seed host and the user host, and the network management server includes at least one tracker ( Tracker), according to the authorized user's request for the video file to generate a sub/user list; and at least one system management server, when receiving an access request from each authorized user, For verifying the authentication and authorization of each authorized user; wherein the client includes a player for playing the audio file.