CN110337004B - Television program transmission method and system - Google Patents
Television program transmission method and system Download PDFInfo
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- CN110337004B CN110337004B CN201910610934.XA CN201910610934A CN110337004B CN 110337004 B CN110337004 B CN 110337004B CN 201910610934 A CN201910610934 A CN 201910610934A CN 110337004 B CN110337004 B CN 110337004B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L61/00—Network arrangements, protocols or services for addressing or naming
- H04L61/45—Network directories; Name-to-address mapping
- H04L61/4505—Network directories; Name-to-address mapping using standardised directories; using standardised directory access protocols
- H04L61/4511—Network directories; Name-to-address mapping using standardised directories; using standardised directory access protocols using domain name system [DNS]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/21—Server components or server architectures
- H04N21/218—Source of audio or video content, e.g. local disk arrays
- H04N21/2187—Live feed
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
- H04N21/4363—Adapting the video or multiplex stream to a specific local network, e.g. a IEEE 1394 or Bluetooth® network
- H04N21/43637—Adapting the video or multiplex stream to a specific local network, e.g. a IEEE 1394 or Bluetooth® network involving a wireless protocol, e.g. Bluetooth, RF or wireless LAN [IEEE 802.11]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/47—End-user applications
- H04N21/478—Supplemental services, e.g. displaying phone caller identification, shopping application
- H04N21/4782—Web browsing, e.g. WebTV
Abstract
The invention discloses a television program transmission method and a system, which comprises a user side, wherein the user side receives a plurality of sets of digital television programs which are compressed and encapsulated with EPG by a multi-path high-definition statistical multiplexing encoder, converts the digital television programs into a plurality of single program IP streams through a broadcast receiving box, and respectively connects with a mobile phone, a tablet or a computer terminal to realize television program transmission after carrying out program analysis, EPG extraction, live broadcast and review processing, DNS analysis and Web service through a video server. The system has the advantages of digital televisions and network televisions, and is high in definition, real-time, multi-user, interactive, free of blockage, zero in flow and wide in coverage.
Description
Technical Field
The invention belongs to the technical field of televisions, and particularly relates to a television program transmission method and system.
Background
At present, television program transmission mainly passes through two systems, which are called digital television and network television respectively. The digital television can be transmitted in three modes of satellite, cable and ground, and has the characteristics of high image quality, real time and wide coverage; the network television can be transmitted through an IPTV private network or an OTT internet, and has the characteristics of interaction, flexibility and convenience. The digital television and the network television respectively have advantages and disadvantages, and the advantages of the digital television and the network television are the disadvantages of the other party.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide a method and a system for broadcasting tv programs, which uses a digital tv channel or a satellite transponder to broadcast dozens of sets of high-definition programs, and mixes the programs into a hotel/restaurant/airport/hospital/home WiFi network, and the user connects to the WiFi at the place through a mobile phone, so that the high-definition programs can be viewed on a browser and can be viewed again for many days, thereby having the advantages of both digital tv and network tv.
The invention adopts the following technical scheme:
a television program transmission system comprises a user side, wherein the user side receives a plurality of sets of digital television programs which are compressed by a multi-path high-definition statistical multiplexing encoder and packaged with EPG, the digital television programs are converted into a plurality of single program IP streams through a broadcast receiving box, and after program analysis, EPG extraction, live broadcast and review processing, DNS analysis and Web service are carried out through a video server, the digital television programs are respectively connected with a mobile phone, a tablet or a computer terminal to realize television program transmission.
Specifically, an electronic program guide packaging method is adopted to package the EPG into a compressed code stream, and the code stream is debugged by a digital television and is sent to a broadcast receiving box in a broadcast mode.
Specifically, the video server can generate corresponding live broadcast and recorded TS files according to the set live broadcast and recorded time length requirements and send the live broadcast and recorded TS files to the terminal to realize television program transmission; and providing DNS resolution service to complete local resolution of browsing domain name.
Further, the video server comprises a digital television signal processing server, a digital television Web server and a file sharing Samba server; the digital television signal processing server can process digital television UDP packets sent by the DVB broadcast receiving box; the file sharing Samba server can store and record TS files, the digital television Web server can store live TS files, and digital television video playing services can be provided for users.
Another technical solution of the present invention is a television program broadcasting method, including the steps of:
s1, compressing a plurality of sets of digital television programs by adopting a multi-path high-definition statistical multiplexing encoder, encapsulating EPG into a compressed digital television program code stream by adopting an electronic program guide encapsulation method, debugging the compressed code stream by a digital television and transmitting the code stream to a user side in a broadcasting mode;
s2, the broadcast receiving box receives the sent digital television information and then sends the digital television information to the video server, and a digital television signal processing server of the video server processes the received digital television information and sends a live broadcast TS file and a JSON file to a digital television Web server; sending the recorded TS file to a digital television Web server through a file sharing Samba server;
and S3, the digital television Web server sends the processed digital television program to the digital television client or the browser to realize television program transmission.
Specifically, in step S1, the method for packaging the electronic program guide specifically includes: segmenting Electronic Program Guide (EPG) information of a digital television-to-network television according to programs, wherein the program information of each segment comprises program starting time and program name information, and the length of each segment is not more than 180 bytes; and then periodically inserts the video TS packet or the audio TS packet into the adjustment field for encapsulation.
Further, the format of the adjustment field of the video TS packet is as follows: the first byte of the adjustment field stores the length information of the adjustment field, the second byte is related flag bit information, the later bytes are all self-defined adjustment field contents, and the second byte is used for identifying the type of the video frame; the format of the adaptation field of the audio TS packet is as follows: live program information and forecast program information are periodically inserted into the start of an audio TS packet containing a PES, a plurality of pieces of forecast program information can be inserted, and one piece of information is inserted into the start of each audio TS packet.
Specifically, in step S2, HLS is selected as a streaming media protocol, the digital television Web server selects a lightweight Web server uhttpd provided in the pandorabox operating system, JSON is used as a data exchange format for designing the digital television signal processing server and the digital television Web server, a Samba server is used as a file server, a DNS server is built using dnsmasq built in the OpenWrt system, and a browser domain name is resolved.
Specifically, in step S2, the digital television signal processing server parses the EPG information in the digital television signal, and saves the EPG information in the form of a JSON file in the main directory of the digital television Web server.
Specifically, in step S3, the digital television Web server stores live TS files of all channels and JSON files storing channel and program information, and contains a link pointing to a path of a TS file storing a recorded program; and the Web webpage of the digital television Web server displays a channel list and a program list of each channel according to the JSON file.
Compared with the prior art, the invention has at least the following beneficial effects:
the invention relates to a television program transmission system.A user side directly receives digital television signals and provides a video server function, namely, the video server is arranged in front of the user, and the user can watch the video programs without blocking and network flow.
Furthermore, the EPG is transmitted along with the digital television video or audio TS stream, and a receiving end can conveniently extract EPG information to form a local electronic program guide, so that a user can conveniently select to watch live programs and review programs.
Furthermore, the video server can select an independent video server or an intelligent router embedded with video service software according to the number of the user sides, and the video server can provide DNS service for achieving tv.
Furthermore, the video server comprises a plurality of services, and aims to receive and record digital television programs and facilitate users to watch live programs and review programs.
The invention also discloses a television program transmission method, which adopts a digital television broadcast and Wifi and user interaction two-hop structure, has the characteristics of real-time high-definition zero-flow of the digital television and has the advantage of convenient interaction of the network television.
Furthermore, the electronic program guide is packaged in the video and audio TS packet, so that the recording of programs at a receiving end and the interactive watching of users are facilitated.
Furthermore, the HLS service supports android and apple mobile phone browser playing, and has high compatibility.
Furthermore, the JSON database is convenient for users to call EPG information.
Further, live programs are stored in the memory, review programs are stored in the hard disk, and live program and review program paths are associated through the JSON database.
In conclusion, the invention has the advantages of digital televisions and network televisions, and has high definition, real time, multiple users, interaction, no blockage, zero flow and wide coverage.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
FIG. 1 is a block diagram of the system of the present invention;
FIG. 2 is a 32-way high definition statistical multiplexing coding interface;
FIG. 3 illustrates client system connections;
FIG. 4 is a block diagram of a wireless routing end system;
FIG. 5 is a diagram of a live program cell phone viewing interface;
FIG. 6 is a diagram of a channel selection interface;
fig. 7 is a view of a review program selection interface.
Detailed Description
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1, a television program distribution system according to the present invention includes the following components:
a broadcasting end, a plurality of sets of television programs are compressed by adopting a multi-path high-definition statistical multiplexing encoder, and compressed code streams are transmitted after being debugged by a digital television and are transmitted to a user end in a broadcasting mode;
and packaging the EPG into the compressed code stream by adopting an electronic program guide packaging method.
The system comprises a user side and a video server, wherein the user side receives a digital television program transmitted by a broadcasting end through the broadcasting receiving box, converts the digital television program into a plurality of single program IP streams and then sends the single program IP streams to the video server; the video server completes functions of IP stream receiving, program analysis, EPG extraction, live broadcast and review processing, DNS analysis, Web service, and the like, and is connected to a terminal such as a mobile phone, a tablet, or a computer through WiFi or a network cable, as shown in fig. 3.
The video server can be a special video server and provides tv.com video website service for large-scale WiFi coverage systems such as airports/hotels; or an intelligent wireless router embedded in video server software; com domain name resolution is automatically performed using an intelligent wireless router embedded with video service software; if a special video server is used, the original WiFi network DNS address can be pointed to the IP address of the special video server to complete local resolution of the tv.com domain name and realize local network access of the video server.
The local WiFi is connected by a mobile phone, a tablet and the like, network services are enjoyed, and if a video server exists, a corresponding website is input in a browser, so that a plurality of sets of high-definition programs can be watched and the programs can be reviewed within a plurality of days.
Referring to fig. 4, a method for broadcasting tv programs according to the present invention includes the following steps:
s1, compressing multiple sets of television programs by adopting a multi-path high-definition statistical multiplexing encoder, encapsulating EPG into a compressed television program code stream by adopting an electronic program guide encapsulation method, debugging the compressed code stream by a digital television and transmitting the code stream to a user side in a broadcasting mode;
the method for packaging the electronic program guide packages the EPG into the compressed code stream specifically comprises the following steps:
inserting EPG information of the program by using a video TS packet or an audio TS packet adaptation field to enable a network television single program stream to contain the EPG information; the EPG information is segmented according to programs, and then is periodically inserted into an adjusting field of a video TS packet or an audio TS packet for packaging, the program information of each segment contains program starting time and program name information, and the length of each segment does not exceed 180 bytes.
Wherein, the start bit of the payload of the video or audio TS packet is indicated as 1; the adjustment field control bit takes the value 11.
The program guide information is divided into live program information and advance notice program information, and the live program is a program which is currently broadcasted; the forecast program is a program to be broadcast in the future, and there may be a plurality of forecast programs, each time slot being a program.
The format of the adjustment field of the video TS packet is as follows: the first byte of the adjusting field stores the length information of the adjusting field, the second byte is the related flag bit information, the later bytes are the self-defined adjusting field content, and the second byte is used for identifying the video frame type. The video frame types comprise video I frames, video B frames and video P frames; the maximum length of the program name is 128 bytes, the adjustment field stores PCR, DTS, channel information and live program information, and the channel name in the EPG information of the adjustment field is the channel name of the current live program.
The encoding machine analyzes all program information of a certain channel in the EPG server, acquires program information of the current system time between the start time and the end time, sets the program information as the current live program, and sets an index value; and the coding machine judges whether the current system time is at the end time of the current live program in real time, if so, the live program information is updated, and the ID number of the program is increased progressively.
For video TS packet packaging program guide information, inserting live program information in I frame, inserting forecast program information in P frame, and considering IBP frame periodicity, program guide information is inserted into TS packet periodically; for the audio TS packet to encapsulate program guide information, one piece of live program information and a plurality of pieces of announcement program information may be periodically inserted in every hundreds of audio frames, and at most one piece of program information is inserted in the TS packet at the beginning of each audio frame.
S2, the broadcast receiving box of the user side receives the sent digital television information and then sends the digital television information to the video server, the digital television signal processing server of the video server processes the received digital television information and sends the live broadcast TS file and the JSON file to the digital television Web server; sending the recorded TS file to a digital television Web server through a file sharing Samba server;
the digital television signal processing server, the digital television Web server and the file sharing Samba server form a software system of a video server, a streaming media protocol selects HLS, the Web server selects a lightweight Web server uhttpd carried by the Web server in a pandobox operating system, JSON is used for designing a data exchange format of the digital television signal processing server and the digital television Web server, the Samba server is used as a file server, a DNS server is built by using dnmasq built in an OpenWrt system, and tv.com domain names are analyzed.
The digital television signal processing server can process digital television UDP packets sent by the DVB broadcast receiving box, and respectively generate corresponding live broadcast and recorded TS files according to the set live broadcast and recorded time length requirements according to the HLS protocol. In order to ensure the playing speed of the live television, live TS files are stored in a memory, namely under a main directory of a digital television Web server; in order to enable a user to play back recorded programs at any time, recorded TS files are stored in a mobile hard disk, namely a subdirectory of a file sharing Samba server. Meanwhile, the digital television signal processing server analyzes the EPG information in the digital television signal and stores the EPG information in a main directory of a digital television Web server in the form of a JSON file.
And S3, the digital television Web server sends the processed digital television program to the digital television client or the browser to realize television program transmission.
The digital television Web server can provide digital television video playing services for users, so that family members watch digital television live programs through browsers of mobile phones, tablets and computers or Android clients, and can play back recorded television programs according to personal preferences.
The digital television Web server saves live TS files of all channels and JSON files for storing channels and program information under the main directory, and contains links pointing to the TS file paths for storing and recording programs. And a Web webpage of the digital television Web server displays a channel list and a program list of each channel according to the JSON file, and a user can automatically select a digital television live program or a recorded program to play through a browser or an Android client.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 2, a cable tv is taken as an example to describe an implementation of the tv distribution system.
The broadcasting end adopts a 'multi-path high-definition statistical multiplexing encoder (model: TS-10032)' to compress 32 sets of television programs. For DVB-C64 QAM modulation with 8MHz bandwidth, 36Mbps code rate is used, 32 sets of 720p high-definition programs are subjected to statistical multiplexing coding, the program quality reaches 4-5 levels, and a coding interface is shown in figure 2.
The coded code stream is output in an ASI format, sent to a DVB-C modulator to be converted into an RF signal, and sent to a user side through a cable television distribution network.
The user end accesses the cable television signal into a broadcast receiving box (model: Tongshi _ C200), converts the cable television signal into 32 single program IP streams and sends the 32 single program IP streams into an intelligent wireless router (model: Newifi3) embedded with video server software.
If the function of watching back is needed, the Newifi3 needs to be externally connected with a USB mobile hard disk, the 1T hard disk can store programs for 3 days, and the 2T hard disk can store programs for a week.
Referring to fig. 5, fig. 6 and fig. 7, an EPG is encapsulated in the compressed code stream by using an electronic program guide encapsulation method, where the EPG information includes information such as a program channel name, a current program name, a future program time and a name, and the live viewing interface of fig. 5 displays the current program name and a next program name; FIG. 6 is a channel selection interface listing live programming channels; fig. 7 shows a list listing review programs, current live programs, and preview program information.
The above-mentioned contents are only for illustrating the technical idea of the present invention, and the protection scope of the present invention is not limited thereby, and any modification made on the basis of the technical idea of the present invention falls within the protection scope of the claims of the present invention.
Claims (5)
1. A television program transmission method of a television program transmission system is characterized in that the television program transmission system comprises a user side, the user side receives a plurality of sets of digital television programs which are compressed by a multi-path high-definition statistical multiplexing encoder and packaged with EPG, the digital television programs are converted into a plurality of single program IP streams through a broadcast receiving box, and the single program IP streams are respectively connected with a mobile phone, a tablet or a computer terminal to realize television program transmission after program analysis, EPG extraction, live broadcast and review processing, DNS analysis and Web service are carried out by a video server;
packaging the EPG into a compressed code stream by adopting an electronic program guide packaging method, debugging the code stream by a digital television, and sending the code stream to a broadcast receiving box in a broadcast mode;
the video server can generate corresponding live broadcast and recorded TS files according to the set live broadcast and recorded duration requirements and send the live broadcast and recorded TS files to the terminal to realize television program transmission; providing DNS analysis service to complete local analysis of browsing domain name; the video server comprises a digital television signal processing server, a digital television Web server and a file sharing Samba server; the digital television signal processing server can process digital television UDP packets sent by the DVB broadcast receiving box; the file sharing Samba server can store and record TS files, and the digital television Web server can store live TS files and provide digital television video playing services for users; the method comprises the following steps:
s1, compressing multiple sets of digital television programs by adopting a multi-path high-definition statistical multiplexing encoder, encapsulating EPG into compressed digital television program code streams by adopting an electronic program guide encapsulation method, debugging the compressed code streams by the digital television and then transmitting the code streams in a broadcast mode, wherein the electronic program guide encapsulation method specifically comprises the following steps: segmenting Electronic Program Guide (EPG) information of a digital television-to-network television according to programs, wherein the program information of each segment comprises program starting time and program name information, and the length of each segment is not more than 180 bytes; then, the adjustment field of the video TS packet or the audio TS packet is periodically inserted for encapsulation;
s2, processing the received digital television information by a digital television signal processing server of the video server, and sending the live broadcast TS file and the JSON file to a digital television Web server; sending the recorded TS file to a digital television Web server through a file sharing Samba server;
and S3, sending the processed digital television program to a digital television client or a browser to realize television program transmission.
2. The method of claim 1, wherein the format of the fields of the video TS packets are as follows: the first byte of the adjustment field stores the length information of the adjustment field, the second byte is related flag bit information, the later bytes are all self-defined adjustment field contents, and the second byte is used for identifying the type of the video frame; the format of the adaptation field of the audio TS packet is as follows: live program information and forecast program information are periodically inserted into the start of an audio TS packet containing a PES, a plurality of pieces of forecast program information can be inserted, and one piece of information is inserted into the start of each audio TS packet.
3. The method according to claim 1, wherein in step S2, HLS is selected as a streaming media protocol, the digital tv Web server selects a lightweight Web server uhttpd in a pandorabox operating system, JSON is used as a data exchange format for designing the digital tv signal processing server and the digital tv Web server, Samba server is used as a file server, a DNS server is built using dnsmasq built in an OpenWrt system, and a browser domain name is resolved.
4. The method of claim 1, wherein in step S2, the digital tv signal processing server parses the EPG information in the digital tv signal and saves it in the form of a JSON file in the main directory of the digital tv Web server.
5. The method for broadcasting television programs according to claim 1, wherein in step S3, the digital television Web server stores live TS files of all channels and JSON files storing channel and program information, and contains links pointing to the TS file path storing recorded programs; and the Web webpage of the digital television Web server displays a channel list and a program list of each channel according to the JSON file.
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| CN111031378B (en) * | 2019-12-20 | 2022-04-05 | 山东浪潮超高清视频产业有限公司 | Method for dotting video and recording EPG (electronic program guide) information |
| CN111225252B (en) * | 2020-01-06 | 2022-07-26 | 广东九联科技股份有限公司 | PON gateway UPNP video live broadcast method based on openwrt system |
| CN111338620A (en) * | 2020-03-05 | 2020-06-26 | 成都金麦客科技有限公司 | OTT dynamic presentation method after Web front-end visual editing |
| CN113259753B (en) * | 2021-07-13 | 2022-04-08 | 广州朗国电子科技股份有限公司 | Teaching method, device and system of integrated machine equipment based on broadcast television network |
| CN114286123A (en) * | 2021-12-23 | 2022-04-05 | 海宁奕斯伟集成电路设计有限公司 | Live broadcast method and device of television program |
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