Ultra-high-definition digital performance second field program gathering and distributing system

Abstract

The invention provides an ultra-high-definition digital performance second field program convergence and distribution system, which is characterized in that an acquisition module encodes an original video signal and sends the encoded video signal to a data processing module through an internet channel for encryption, and a data distribution module sends the encrypted video signal to target terminal equipment through the internet channel for data transmission. Performing decryption and decoding to obtain an original video signal; according to the system, at least one of a 8K ultra-high-definition camera, a 4K ultra-high-definition camera and a high-frame-rate camera can be adopted to collect original video signals, the image quality of the original video signals is greatly improved, and the data distribution module carries out signal transmission through an internet channel. According to the technical scheme, the encrypted video signals can be efficiently distributed to the target terminal equipment, the delay problem of transmission and distribution is solved, in addition, the data processing module encrypts the coded video signals, an effective copyright protection mechanism can be provided, and infringement behaviors such as illegal rebroadcasting are avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of signal processing, and in particular to an ultra-high-definition digital performing arts second live program aggregation and distribution system. Background Art

[0002] With the development of ultra-high-definition video technology, audiences are increasingly demanding visual experiences for live performances, sports events and other entertainment activities. Single on-site viewing can no longer meet the needs of the audience, and simultaneous broadcasting in multiple venues through live video or on-demand has become a new development trend. Related technologies mainly broadcast videos through TV stations, and mainly transmit signals through satellite channels. Since dedicated receiving equipment is required, the use of satellite channel transmission is relatively expensive; existing technologies can also transmit signals through Internet channels, but the transmission and distribution of program signals from the site to each playback point are delayed, the picture quality is reduced, and there is a lack of effective copyright protection mechanisms, which makes it easy for infringements such as illegal rebroadcasting to occur. Summary of the invention

[0003] The purpose of the present invention is to provide an ultra-high-definition digital performing arts second live program aggregation and distribution system to improve the delay and image quality degradation problems in signal transmission and distribution, and provide a copyright protection mechanism to avoid infringements such as illegal broadcasting.

[0004] The present invention provides an ultra-high-definition digital performing arts second-site program convergence and distribution system, the system comprising: an acquisition module, used to acquire the original video signal corresponding to the first activity site through a designated camera, encode the original video signal to obtain an encoded video signal, and send the encoded video signal to a data processing module through an Internet channel; wherein the designated camera comprises at least one of the following: an 8K ultra-high-definition camera, a 4K ultra-high-definition camera, and a high frame rate camera; a data processing module, used to encrypt the encoded video signal to obtain an encrypted video signal; a data distribution module, used to send the encrypted video signal to a target terminal device through an Internet channel; the target terminal device is used to decrypt and decode the encrypted video signal to obtain the original video signal; wherein the target terminal device has the authority to use the original video signal.

[0005] Furthermore, the acquisition module includes: a first camera, used to acquire high-resolution video signals of the first activity scene; wherein the first camera includes: an 8K ultra-high-definition camera, a 4K ultra-high-definition camera; a high frame rate camera, used to acquire high-frame rate video signals of fast-motion scenes; an ultra-high-definition live switcher, used to switch and synthesize high-resolution video signals and high-frame rate video signals to obtain original video signals; an encoding device, used to encode the original video signal according to a preset first encoding format to obtain an encoded video signal; a transmission device, used to send the encoded video signal to the data processing module via an Internet channel.

[0006] Furthermore, the data processing module is also used to: receive a plurality of encoded video signals corresponding to a plurality of activity sites; and transcode and encrypt the plurality of encoded video signals to obtain a plurality of encrypted video signals.

[0007] Furthermore, the data processing module also includes: a signal receiving unit, which is used to receive multiple encoded video signals corresponding to multiple activity sites; a transcoding module, which is used to transcode the multiple encoded video signals according to a preset second encoding format to obtain multiple transcoded video signals; an encryption module, which is used to encrypt the multiple transcoded video signals to obtain multiple encrypted video signals; and a storage unit, which is used to store the multiple encrypted video signals.

[0008] Furthermore, the encryption module is used to adopt a digital copyright management standard to encrypt the multiple transcoded video signals respectively to obtain multiple encrypted video signals.

[0009] Furthermore, the data distribution module includes: a program distribution module, which is used to obtain transmission parameters corresponding to the target terminal device and transmit the encrypted video signal to the content distribution network module according to the transmission parameters; the content distribution network module is used to send the encrypted video signal to the edge server through the Internet channel, so as to send the encrypted video signal to the target terminal device through the edge server.

[0010] Furthermore, the system also includes: a program on-demand module; the program on-demand module is used to: obtain multiple encrypted video signals stored in a storage unit; receive a first processing request from a target terminal device through a web page and / or an APP client, so as to process the obtained multiple encrypted video signals according to the first processing request; wherein the first processing request includes at least one of the following: a search request, a browse request, and a program on-demand request; if the first processing request is a program on-demand request, obtain verification information corresponding to the target terminal device, compare the verification information with a pre-stored authorization list, and obtain a comparison result; if the comparison result indicates that the target terminal device has program-on-demand permission, obtain the target video signal corresponding to the program-on-demand request, and send the target video signal to the target terminal device; the target terminal device is used to decrypt and decode the target video signal to obtain a video signal corresponding to the program-on-demand request.

[0011] Furthermore, the first camera has a corresponding maximum resolution of 7680x4320 and a corresponding maximum frame rate of 120 frames per second.

[0012] Furthermore, the maximum frame rate corresponding to the high frame rate camera is 120 frames per second.

[0013] Furthermore, the target terminal device is a terminal corresponding to the theater screen.

[0014] The present invention provides an ultra-high-definition digital performing arts second-site program convergence and distribution system, wherein an acquisition module is used to acquire an original video signal corresponding to a first activity site through a designated camera, encode the original video signal to obtain an encoded video signal, and send the encoded video signal to a data processing module through an Internet channel; wherein the designated camera includes at least one of the following: an 8K ultra-high-definition camera, a 4K ultra-high-definition camera, and a high frame rate camera; the data processing module is used to encrypt the encoded video signal to obtain an encrypted video signal; the data distribution module is used to send the encrypted video signal to a target terminal device through an Internet channel; the target terminal device is used to decrypt and decode the encrypted video signal to obtain the original video signal; wherein the target terminal device has the authority to use the original video signal. The system can use at least one of an 8K ultra-high-definition camera, a 4K ultra-high-definition camera and a high frame rate camera to collect original video signals, which greatly improves the picture quality of the original video signals. The data distribution module transmits signals through the Internet channel, and can efficiently distribute the encrypted video signals to the target terminal device, improving the transmission and distribution delay problem. In addition, the data processing module encrypts the encoded video signal, which can provide an effective copyright protection mechanism to avoid infringements such as illegal broadcasting. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 A schematic diagram of an ultra-high-definition digital performing arts second live program aggregation and distribution system provided by an embodiment of the present invention;

[0017] Figure 2 A schematic diagram of another ultra-high-definition digital performing arts second live program aggregation and distribution system provided by an embodiment of the present invention;

[0018] Figure 3 A schematic diagram of a code stream aggregation and broadcasting system provided by an embodiment of the present invention;

[0019] Figure 4 A schematic diagram of a user and digital copyright management system provided by an embodiment of the present invention;

[0020] Figure 5 A schematic diagram of a transmission and distribution system provided by an embodiment of the present invention;

[0021] Figure 6 A schematic diagram of another ultra-high-definition digital performing arts second live program aggregation and distribution system provided by an embodiment of the present invention;

[0022] Figure 7 A schematic diagram of another ultra-high-definition digital performing arts second live program aggregation and distribution system provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0023] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] In the related technologies, videos are mainly broadcast through TV stations, and there is a lack of live distribution channels for theaters. In addition, the technical system based on TV stations is to protect the channel. After the video is broadcast from the TV station, the transmission channel will be encrypted. All the contents in the transmission channel need to be decrypted through the terminal in the user's home. The decrypted content is not encrypted. In summary, the existing live program production and distribution technology has many limitations, as follows:

[0025] 1. It cannot flexibly meet the viewing needs of different venues and different audiences, and there is no on-demand function.

[0026] 2. There are problems such as delay and degradation of image quality in the transmission and distribution of program signals from the site to each playback point.

[0027] 3. The lack of an effective copyright protection mechanism makes it easy for infringements such as illegal broadcasting to occur.

[0028] Based on this, an embodiment of the present invention provides an ultra-high-definition digital performing arts second live program aggregation and distribution system, and this technology can be applied to scenarios where live broadcast of video signals is required.

[0029] To facilitate understanding of this embodiment, firstly, an ultra-high-definition digital performing arts second live program aggregation and distribution system disclosed in an embodiment of the present invention is introduced. Figure 1 As shown, the system includes:

[0030] The acquisition module is used to acquire the original video signal corresponding to the first activity scene through the designated camera, encode the original video signal to obtain the encoded video signal, and send the encoded video signal to the data processing module through the Internet channel; wherein the designated camera includes at least one of the following: 8K ultra-high-definition camera, 4K ultra-high-definition camera and high frame rate camera.

[0031] The above-mentioned 8K ultra-high-definition camera is a recording device that can shoot and record extremely high-definition images; 8K has a resolution of 7680×4320 pixels, which can provide more delicate and realistic image quality. The above-mentioned 4K ultra-high-definition camera is a network camera that uses a high-resolution image sensor, which can provide extremely clean and delicate image quality, and its resolution reaches 3840×2160 pixels; the above-mentioned high frame rate camera is a special camera that can record images at an extremely high frame rate, usually 1,000 to 10,000 frames per second. This camera can provide clearer and more stable images when shooting fast-moving objects. In actual implementation, the acquisition module is mainly responsible for ultra-high-definition video acquisition and on-site production of live performances, competitions and other activities. Specifically, one or more of 8K ultra-high-definition cameras, 4K ultra-high-definition cameras and high-frame rate cameras can be used to capture video of the first activity site to obtain the original video signal. For the convenience of transmission, the original video signal can be encoded to reduce the size of the original video signal. Specifically, the purpose of compression can be achieved by removing redundant information in the video, such as spatial redundancy, temporal redundancy, etc., to obtain the encoded video signal, which can be sent to the data processing module through the Internet channel.

[0032] The data processing module is used to encrypt the encoded video signal to obtain an encrypted video signal; the data distribution module is used to send the encrypted video signal to the target terminal device through the Internet channel; in actual implementation, in order to protect the security and copyright of the video content and prevent unauthorized access and copying, the encoded video signal can be encrypted through encryption technology to obtain an encrypted video signal. Only the target terminal device with permission can decrypt the encrypted video signal, thereby ensuring the confidentiality and integrity of the video. The encrypted video signal is sent to the data distribution module, and the data distribution module can send the encrypted video signal to the target terminal device through the Internet channel. The target terminal device can be the terminal corresponding to the theater screen, etc.

[0033] The target terminal device is used to decrypt and decode the encrypted video signal to obtain the original video signal; wherein the target terminal device has the authority to use the original video signal.

[0034] In actual implementation, when the target terminal device has the authority to use the original video signal, the target terminal device can be allowed to decrypt the encrypted video signal to obtain a decrypted video signal, and decode the decrypted video signal. Specifically, the encoded video signal can be restored to the original video signal so that it can be displayed and played through the target terminal device.

[0035] In the above-mentioned ultra-high-definition digital performing arts second-site program convergence and distribution system, the acquisition module is used to acquire the original video signal corresponding to the first activity site through a designated camera, encode the original video signal to obtain an encoded video signal, and send the encoded video signal to the data processing module through an Internet channel; wherein the designated camera includes at least one of the following: an 8K ultra-high-definition camera, a 4K ultra-high-definition camera, and a high frame rate camera; the data processing module is used to encrypt the encoded video signal to obtain an encrypted video signal; the data distribution module is used to send the encrypted video signal to a target terminal device through an Internet channel; the target terminal device is used to decrypt and decode the encrypted video signal to obtain the original video signal; wherein the target terminal device has the authority to use the original video signal. The system can use at least one of an 8K ultra-high-definition camera, a 4K ultra-high-definition camera and a high frame rate camera to collect original video signals, which greatly improves the picture quality of the original video signals. The data distribution module transmits signals through the Internet channel, and can efficiently distribute the encrypted video signals to the target terminal device, improving the transmission and distribution delay problem. In addition, the data processing module encrypts the encoded video signal, which can provide an effective copyright protection mechanism to avoid infringements such as illegal broadcasting.

[0036] Furthermore, the acquisition module includes: a first camera, for acquiring high-resolution video signals of the first activity scene; wherein, the first camera includes: an 8K ultra-high-definition camera, a 4K ultra-high-definition camera; this embodiment adopts the latest 8K ultra-high-definition camera and 4K ultra-high-definition camera, which can capture resolutions up to 7680x4320, and a frame rate of 60 frames / second, and can even reach a maximum frame rate of 120 frames / second, with fine and delicate image quality, which can fully restore the details and dynamics of the first activity scene.

[0037] High frame rate camera is used to collect high frame rate video signals of fast motion scenes. First, there may be fast motion scenes at the event site. For activities that need to capture fast motion scenes, such as sports events, a high frame rate camera that supports a maximum frame rate of 120 frames per second can be used. This can greatly improve the smoothness and dynamic expression of the picture.

[0038] The ultra-high-definition live switcher is used to switch and synthesize high-resolution video signals and high-frame rate video signals to obtain original video signals. The ultra-high-definition live switcher can adopt a professional live switcher that supports 8K / 4K ultra-high-definition input and output, can receive high-resolution video signals captured by the first camera and high-frame rate video signals captured by the high-frame rate camera, and can realize real-time switching, special effects synthesis and other on-site production functions of the received multiple ultra-high-definition video sources to obtain original video signals.

[0039] The encoding device is used to encode the original video signal according to a preset first encoding format to obtain an encoded video signal; the above-mentioned first encoding format can be set according to actual needs, for example, it can be H.265, etc.; in actual implementation, the original video signal can be converted into a standard first encoding format through the encoding device, and can support real-time encoding output and offline file output, and the obtained encoded video signal is sent to the transmission device.

[0040] The transmission device is used to send the encoded video signal to the data processing module through the Internet channel. After receiving the encoded video signal, the transmission device can transmit the encoded video signal to the data processing module through the high-speed Internet channel.

[0041] Furthermore, the data processing module is also used to: receive multiple encoded video signals corresponding to multiple activity sites; transcode and encrypt the multiple encoded video signals to obtain multiple encrypted video signals. The data processing module can realize the aggregation processing of multiple encoded video signals corresponding to multiple activity sites, specifically, it can receive multiple encoded video signals corresponding to multiple activity sites, and perform unified transcoding and encryption processing to provide support for subsequent distribution and on-demand processes.

[0042] Furthermore, the data processing module also includes:

[0043] A signal receiving unit is used to receive multiple encoded video signals corresponding to multiple activity sites; the signal receiving unit can support the parallel reception of multiple video signals, has a high-speed network interface and large-capacity storage, and can stably and reliably receive and cache various program sources; as a public network receiving device, the signal receiving unit usually needs to have a fixed IP address that can be accessed on the Internet.

[0044] The transcoding module is used to transcode multiple encoded video signals respectively according to a preset second encoding format to obtain multiple transcoded video signals; the second encoding format can be set according to actual needs, and the second encoding format may be the same as or different from the first encoding format; in actual implementation, the multiple encoded video signals received by the transcoding module usually adopt different encoding formats and parameters, and can be uniformly converted into a unified format suitable for distribution and on-demand, such as 4K / 60p H.265, etc. through the transcoding module, and can also support transcoding outputs of multiple bit rates and resolutions to meet the playback requirements of different target terminal devices; the transcoding module is usually deployed on the same device as the signal receiving unit.

[0045] The encryption module is used to encrypt the multiple transcoded video signals respectively to obtain multiple encrypted video signals; specifically, the encryption module is used to adopt the digital rights management standard to encrypt the multiple transcoded video signals respectively to obtain multiple encrypted video signals. The above digital rights management can be referred to as DRM (Digital Rights Management). In this embodiment, in order to protect the copyright of the program, the system is equipped with an encryption module based on ChinaDRM, which can encrypt the multiple transcoded video signals respectively, and only the authorized target terminal device can decrypt and play them.

[0046] The storage unit is used to store multiple encrypted video signals. In this embodiment, the system is equipped with a large-capacity storage unit for storing encrypted video signals corresponding to each activity site. These encrypted video signals can be stored for a long time and support on-demand services.

[0047] The data processing module is equipped with a special program management software, which is used to uniformly manage the whole process of receiving, storing, transcoding, and encrypting various program sources. It also supports the editing and retrieval of program metadata, providing support for subsequent program distribution and on-demand services. Program metadata refers to descriptive information about program content, including program name, type, and broadcast duration. This information is very important for program classification, search, and recommendation.

[0048] In general, the main functions of the data processing module are: receiving ultra-high-definition program signals from various sites, performing unified video encoding and transcoding, implementing copyright protection of video content, and providing long-term storage and management of programs.

[0049] Furthermore, the data distribution module is responsible for distributing the encrypted video signal output by the data processing module to each terminal device through an Internet channel; the data distribution module includes:

[0050] The program distribution module is used to obtain the transmission parameters corresponding to the target terminal device and transmit the encrypted video signal to the content distribution network module according to the transmission parameters; the above transmission parameters may include parameters such as bit rate and resolution; in actual implementation, the program distribution module can receive the encrypted video signal from the data processing module, and according to the needs of the target terminal device, it uses appropriate transmission parameters such as bit rate and resolution to package it and transmit it to the content distribution network module, while supporting both real-time distribution and on-demand distribution modes.

[0051] The content distribution network module is used to send the encrypted video signal to the edge server through the Internet channel, so as to send the encrypted video signal to the target terminal device through the edge server. The edge server is a distributed computing architecture, and its data processing is performed at the edge of the network. It is usually deployed closer to the target terminal device to process data, which can significantly reduce the data transmission time, thereby reducing latency. In this embodiment, in order to ensure the quality and stability of video signal transmission, the content distribution network module can use CDN (Content Delivery Network) technology to cache the encrypted video signal to edge servers across the country or even the world, provide services to terminal devices nearby, and improve transmission speed and reliability.

[0052] In specific implementation, the program distribution process can be managed and scheduled by a dedicated control system, which can dynamically adjust the distribution strategy according to the type of target terminal device, network status, etc., optimize the transmission performance, and support real-time monitoring and fault preprocessing. For example, if the network status is poor and the packet loss rate is high, the bit rate can be appropriately reduced, and multiple bit rates corresponding to different network statuses can be configured in advance according to actual needs. The transmission process can be monitored in real time and dynamically, and the network status can be judged based on the delay and packet loss of the target terminal device receiving the file. For example, if 99% of the data packets reach the target terminal device within 20ms, it can be considered that the network status is relatively good, and the highest bit rate can be used in this case.

[0053] Furthermore, the system also includes: a program on demand module; the program on demand module can provide viewers with a variety of program on demand services to meet the personalized needs of different viewers. The program on demand module is used to:

[0054] Acquire multiple encrypted video signals stored in the storage unit; in actual implementation, the multiple encrypted video signals stored in the above storage unit can be acquired and saved through the on-demand server, and on-demand services can be provided to terminal users. The on-demand server can support 8K / 4K ultra-high-definition video on demand, and can provide bitstream conversion of different resolutions and bit rates to adapt to the playback requirements of different terminal devices.

[0055] Receiving a first processing request from a target terminal device through a web page and / or an APP client to process the acquired multiple encrypted video signals according to the first processing request; wherein the first processing request includes at least one of the following: a search request, a browse request, and a video-on-demand request;

[0056] The on-demand server can provide a portal website, which refers to an application system that provides a certain type of comprehensive Internet information resources and related information services. The portal website can be accessed through the web page; the APP client is an application installed on a mobile device; in actual implementation, users can find, browse and on-demand program resources of interest through the portal website provided by the on-demand server. The portal website supports rich program metadata retrieval functions and provides personalized recommendations to enhance user experience. In addition to the web page, the node on-demand module also provides an APP client, which can be installed on terminal devices such as smart TVs and tablets to provide users with a richer interactive experience. The APP client supports functions such as local caching and offline viewing.

[0057] If the first processing request is a video-on-demand request, obtaining verification information corresponding to the target terminal device, comparing the verification information with a pre-stored authorization list, and obtaining a comparison result;

[0058] The above-mentioned verification information may include information such as the device type and number of the target terminal device; the above-mentioned authorization list usually stores all authorized terminal devices. For example, if a user purchases playback rights for a terminal device, the relevant device information of the terminal device will be stored in the authorization list; in actual implementation, in order to ensure copyright security, the on-demand server needs to introduce an authorization authentication system. When a on-demand request is received from a target terminal device, the verification information of the target terminal device can be obtained first and compared with the authorization list. If the authorization list contains the verification information of the target terminal device, it can be considered that the target terminal device has the on-demand permission. If the authorization list does not contain the verification information of the target terminal device, it can be considered that the target terminal device does not have the on-demand permission.

[0059] If the comparison result indicates that the target terminal device has the on-demand permission, the target video signal corresponding to the on-demand request is obtained and sent to the target terminal device; the target terminal device is used to decrypt and decode the target video signal to obtain the video signal corresponding to the on-demand request.

[0060] If the comparison result indicates that the target terminal device has the on-demand permission, the target video signal corresponding to the on-demand request can be extracted from the multiple encrypted video signals stored and sent to the target terminal device. After decryption and decoding, the video signal requested for on-demand can be obtained. In actual applications, if the target terminal device has the on-demand permission, the encryption key corresponding to the target video signal can be encrypted with a public key to form a certificate. The target terminal device needs to use a private key that matches the public key to decrypt in order to obtain the encryption key, which is decrypted according to the decryption method in the certificate. The above authentication process works closely with the encryption module in the data processing module.

[0061] In general, the main functions of the program on demand module are: providing program on demand resources; supporting on-demand services for a variety of terminal devices; and realizing copyright protection and authorization of program content.

[0062] In the above-mentioned ultra-high-definition digital performing arts second-site program aggregation and distribution system, the copyright management system will be used to manage and protect the copyright of the program content throughout the entire process, mainly including:

[0063] (1) Digital Rights Management (DRM), based on the ChinaDRM standard, encrypts and protects the video information in the data processing module to ensure that only authorized terminal devices and users can decrypt and play.

[0064] (2) Authorization Management Through the authorization management subsystem, corresponding playback permissions can be assigned to different users or terminal devices (for example, a user purchases a one-time playback permission or a one-week playback permission, etc.) to prevent unauthorized viewing; it also supports multiple authorization modes such as temporary authorization and subscription.

[0065] (3) Copyright monitoring: Continuously monitor the use of program content on various terminal devices and network platforms. Once unauthorized infringement is discovered, appropriate protective measures can be taken in a timely manner.

[0066] (4) Copyright trading provides a trading platform for content copyright holders, supporting the full process management of program copyright pricing, sales, settlement, etc. Transaction data can provide a basis for subsequent copyright operations.

[0067] In short, copyright management is an indispensable and important part of this solution. It ensures the copyright security of program content throughout the entire usage chain and provides reliable rights protection for content providers and users.

[0068] The above-mentioned ultra-high-definition digital performing arts second live program aggregation and distribution system uses 8K / 4K ultra-high-definition cameras and high-frame rate cameras with a maximum frame rate of 120 frames per second, which greatly improves the visual quality of live programs and can bring an immersive viewing experience to the audience; at the same time, it uses professional ultra-high-definition switching stations for live production to ensure the professionalism of program production.

[0069] The system can also perform unified program aggregation and distribution. The data processing module can centrally receive the encoded video signals from various activity sites, perform unified encoding and transcoding, DRM encryption and other processing, and form standardized program resources. Then, through technologies such as CDN, the encrypted video signals can be efficiently distributed to various terminal playback points to ensure quality and stability.

[0070] In addition to live broadcasts, the system can also provide a large number of on-demand program services. Users can search, browse and on-demand the ultra-high-definition program content of interest through the portal website or APP client, greatly enhancing the user experience.

[0071] This system adopts a complete copyright protection mechanism, and implements full-process encryption protection for program content through ChinaDRM's digital copyright management technology; it also supports flexible authorization management and copyright monitoring, effectively preventing illegal use of program content.

[0072] In addition, the above system has the following advantages:

[0073] The system enhances the audience's viewing experience. By adopting 8K / 4K ultra-high-definition technology and 120 frames per second high-frame rate technology, it greatly improves the picture quality and smoothness of the program, giving the audience an immersive visual enjoyment; in addition, the rich on-demand services meet the personalized needs of different audiences.

[0074] The system can also protect content copyright by encrypting content through the Internet channel, which can only be decrypted by authorized devices. By adopting a safe and complete DRM encryption and authorization management mechanism, the copyright of program content is effectively protected, illegal use and infringement are avoided, and the legitimate rights and interests of content providers and users are maintained.

[0075] The system can also improve operational efficiency, with a unified program aggregation and distribution process, greatly simplifying the entire chain of operations from on-site production to broadcasting, and improving work efficiency. At the same time, the rich program resource library also brings new possibilities for subsequent operations and commercial realization.

[0076] The system also has the characteristic of strong capacity. This system makes full use of the existing ultra-high-definition video equipment and can seamlessly connect with it to achieve a smooth transition. At the same time, it supports the playback needs of multiple terminal devices, leaving ample room for future development.

[0077] In general, the ultra-high-definition digital performing arts second-site program aggregation and distribution system provided by this solution integrates advanced video acquisition, encoding, transmission, storage and DRM protection technologies to achieve the aggregation, distribution and on-demand services of high-quality live programs. There have been significant innovations and optimizations in video quality, copyright protection, user experience, etc., providing a new solution for live program production and dissemination. The system has greatly improved the video quality and user experience, while effectively protecting the content copyright, providing a new solution for live program production and dissemination. The system adopts advanced 8K / 4K ultra-high-definition and high-frame rate video acquisition technology, which greatly improves the video quality and smoothness, bringing an immersive viewing experience to the audience. At the same time, the perfect program aggregation, distribution and on-demand mechanism, as well as the full-process copyright protection based on ChinaDRM, ensure the safe dissemination of content and the legitimate rights and interests of users.

[0078] For ease of understanding, the following takes the drama performance scene as an example to describe the workflow of the ultra-high-definition digital performing arts second-site program aggregation and distribution system. At the drama performance scene, 8K ultra-high-definition cameras and professional ultra-high-definition live switchers are used to collect and produce ultra-high-definition videos of the drama performance process. The encoding device converts the collected video signal into H.265 format and transmits it to the program aggregation system (corresponding to the above-mentioned data processing module) through the network.

[0079] The receiving server of the program aggregation system (corresponding to the above-mentioned signal receiving unit) receives the program signal from the scene and transcodes it into 4K / 60p H.265 encoding format for synchronous storage. The video files before and after transcoding are processed for copyright protection through the DRM encryption module and stored in the program storage server (corresponding to the above-mentioned storage unit).

[0080] The distribution server (program distribution module) of the program distribution subsystem (corresponding to the above-mentioned data distribution module) packages 8K or 4K program files and distributes them to various viewing points through the CDN network according to the requirements of the target terminal device. Only after the terminal user passes the authorization authentication can they decrypt and watch the live broadcast of the drama performance.

[0081] In addition to live broadcasts, users can also log in to the portal website or APP client of the program on demand system to find and watch previously recorded and stored drama performances or other video resources. The program on demand module can automatically transcode the bit rate and resolution according to the user's device, providing users with a high-quality viewing experience.

[0082] In order to meet the playback requirements of different terminal devices, the program aggregation system will generate transcoded versions of various bit rates and resolutions for the video content, such as 4K / 60P, 2K / 60P, 1080P, etc., while performing DRM encryption processing, and store them in the program storage server. During the distribution and on-demand process, the system will automatically select the appropriate bit stream for transmission to ensure the best viewing experience.

[0083] The copyright management system is the key technology throughout the entire system. It is based on the ChinaDRM standard and implements full-process encryption protection for program content. It also supports flexible authorization management and can grant corresponding playback licenses to different users or devices. In addition, copyright monitoring will continue to monitor the use of programs on various platforms, and once infringement is discovered, protective measures can be taken in a timely manner.

[0084] The following is another ultra-high-definition digital performing arts second-site program aggregation and distribution system. Ulive "Ultra-site" is the world's first ultra-high-definition digital theater solution; it provides full-link software and hardware products and operation services from the front-end ultra-high-definition shooting and program production, broadcast control, transmission distribution, and ultra-high-definition digital theater "second-site" terminal presentation of the "first scene" of the stage performance. Provide the audience at the second scene with an immersive viewing experience that is the same as the first scene but also beyond the first scene.

[0085] In order to realize the above operation services, a set of ultra-high-definition digital performing arts second-site program aggregation and distribution system has been built as a service platform for the regular operation of Ulive ultra-site. Figure 2 The schematic diagram of another ultra-high-definition digital performing arts second live program convergence and distribution system is shown. The ultra-high-definition digital performing arts second live program convergence and distribution system service platform is composed of five main systems, including: encoding and streaming system (corresponding to the above-mentioned acquisition module), bit stream convergence and broadcasting system (corresponding to the above-mentioned data processing module), user and digital copyright management system (corresponding to the above-mentioned copyright management system), transmission distribution system (corresponding to the above-mentioned data distribution module), decryption and decoding system (corresponding to the above-mentioned target terminal device).

[0086] The following is a description of each component:

[0087] 1. Encoding and streaming system

[0088] The encoding and streaming system consists of two hardware encoders or encoding servers / workstations: a main encoder and a backup encoder.

[0089] The encoder supports 4K or 8K format encoding as needed, and the 8K encoder also has 4K encoding capabilities.

[0090]

[0091]

[0092] 2. Stream aggregation and broadcasting system

[0093] like Figure 3 The schematic diagram of a bitstream convergence and broadcast system shown in the figure includes functional modules such as bitstream convergence, real-time transcoding, editing and broadcasting control, broadcasting server and background management. The bitstream pushed by the front-end encoding and streaming system is received, and real-time transcoding is performed as needed. The broadcasting server mixes and arranges the transcoded bitstream with the local bitstream file according to the broadcast editing rules, rearranges it to form one or more virtual live content, pushes the audio and video clear stream to a third-party live broadcast platform, or pushes the encrypted bitstream to the transmission and distribution system through the central source station.

[0094] The code stream aggregation and broadcasting system must meet the following indicators or functions:

[0095] (1) Stream aggregation with bit rates of 80-120 Mbps for 8K format and 20-35 Mbps for 4K format.

[0096] (2) Real-time streaming or file broadcasting with a bit rate of 80-120Mbps for 8K format, 20-35Mbps for 4K format, and 5-15Mbps for HD format.

[0097] (3) The main and backup code streams converge and switch automatically. When the main code stream is disconnected, it automatically switches to the backup code stream.

[0098] (4) The main and backup dual-channel code streams are simultaneously converged and broadcast.

[0099] (5)Multi-format, multi-bitrate, multi-target address, and multi-channel simultaneous broadcast.

[0100] (6) Real-time transcoding supports real-time down-conversion and bit rate conversion from 8K to 4K and 4K to HD.

[0101] 3. User and digital rights management system

[0102] like Figure 4 The schematic diagram of a user and digital copyright management system shown in the figure includes functional modules such as user management and authentication, digital copyright management, content encryption, and key distribution. For the code stream that needs digital copyright protection in the broadcast content, the digital copyright management module generates an encryption key, and the encryption module encrypts the code stream. The user management and authentication module authenticates the user based on user information or terminal information. The digital copyright management module sends the key to the legal decryption and decoding terminal based on the authentication result.

[0103] The user and digital copyright management system must meet the following indicators or functions:

[0104] (1) Authentication of users and terminals and key authorization based on user accounts, terminal IP (Internet Protocol) address / Mac (Media Access Control Address) address, terminal HDMI (High Definition Multimedia Interface) port to obtain EDID (Extended Display Identification Data) information of display devices, and other information.

[0105] (2) Real-time encryption of bitstreams with bitrates of 80-120Mbps for 8K format, 20-35Mbps for 4K format, and 5-15Mbps for HD format.

[0106] (3) Support user terminal application upgrades and content push.

[0107] (4) It has the function of counting the duration and number of plays, and retains a real-time data exchange or data file import interface at the software level, so as to exchange data and conduct comprehensive billing with a third-party digital asset trading system or ticketing system in the future.

[0108] 4. Transmission and distribution system

[0109] like Figure 5 The schematic diagram of a transmission and distribution system shown in FIG. 1 is composed of a code stream distribution gateway, a key distribution gateway and an edge node gateway. The edge node gateway transmits one or more injected code streams to the code stream distribution gateway through the network, and distributes them to the edge node gateways of each receiving end through the code stream distribution gateway. The decryption and decoding system obtains the code stream from the edge node gateway for decryption and decoding output. The key distribution gateway is responsible for distributing the keys sent by users and digital copyright management systems to various legal decryption and decoding systems.

[0110] The transmission and distribution system must meet the following indicators or functions:

[0111] (1) Deployment of PasS platform based on public Internet and public cloud.

[0112] (2) Maximum 120Mbps bit rate transmission and distribution capability.

[0113] (3) 24 / 7 transmission reliability without interruption or lag.

[0114] (4) Support encrypted code stream transmission and distribution.

[0115] (5) Edge node gateway to cloud supports multi-link aggregation transmission.

[0116] The transmission and distribution system can be built based on the public cloud PaaS (Platform as a Service, a cloud service model) platform, or directly purchased and rented from a third-party manufacturer's SaaS (Software-as-a-Service, a way of providing software services over the Internet) service for high-reliability transmission of audio and video.

[0117] 5. Decryption and decoding system

[0118] The decryption and decoding system consists of one or two hardware decoders, a decoding server or a workstation. The decoder supports 4K or 8K format decryption and decoding as needed, and the 8K decryption and decoder also have 4K decoding capabilities.

[0119]

[0120]

[0121] For the convenience of understanding, the following is provided Figure 6 The schematic diagram of another ultra-high-definition digital performing arts second-site program convergence and distribution system shown by Jing is aimed at meeting the "second-site" demonstration and experimental projects. The system can simplify the equipment and realize the most basic video signal processing functions. Specifically, it can include 8K encoders, encryption machines, DRM servers, edge node gateways, stream distribution gateways, key distribution gateways, set-top box dedicated apps, etc. The system can include the following functions:

[0122] 1. There is no need for functions such as code stream aggregation, file broadcasting, and broadcast editing. There is no need to build a complete code stream aggregation and broadcasting system. It only needs to support automatic switching of the main and backup encoders.

[0123] 2. The number of terminal users is small, and the user management complexity requirements are low. The user and digital copyright management system only deploys whitelist-based digital copyright management and content encryption.

[0124] 3. Transmission and distribution system Consider purchasing a single virtual server in the public cloud and deploying a stream distribution gateway and a key distribution gateway. Or rent a high-reliability video transmission service from a third-party vendor.

[0125] 4. The decryption and decoding system uses a low-cost 8K / 4K set-top box and develops and deploys a dedicated decryption and decoding APP based on the SDK (Software Development Kit) of the DRM encryption and decryption product supplier.

[0126] The following provides Figure 7The schematic diagram of another ultra-high-definition digital performing arts second-site program aggregation and distribution system shown in the figure aims to build a complete and reliable full-function broadcast platform. The system may include: encoder, stream aggregation, real-time transcoding, editing and broadcasting control, broadcast server, encryption machine, user management and authentication, digital copyright management, key distribution gateway, stream distribution gateway, edge node gateway, set-top box dedicated APP, etc. The system may include the following functions:

[0127] 1. Broadcast of three stage performances at the same time.

[0128] 2. Add two sets of 8K encoders as main and backup and two sets of 4K encoders as main and backup.

[0129] 3. Deploy complete stream aggregation, real-time transcoding, file transcoding, editing and broadcasting, and central source station.

[0130] 4. Deploy complete user management and authentication, terminal management, digital copyright management and encryption, implement a user authentication mechanism based on triple authentication of user account, decoding terminal hardware information and display device HDMI interface EDID information, and implement statistics on the number and duration of broadcasts for users and terminals.

[0131] 5. Dedicated broadband access of no less than 300Mbps from at least two operators.

[0132] 6. Build a broadcast control room with complete monitoring, surveillance and network control functions.

[0133] 7. Build a transmission and distribution system on the public cloud that supports simultaneous live broadcasts from no less than 100 theaters.

[0134] 8. For larger-scale live broadcasts, identify a long-term professional audio and video transmission service platform and corresponding provider.

[0135] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An ultra-high-definition digital performing arts second live program aggregation and distribution system, characterized in that: The system comprises: The acquisition module is used to acquire the original video signal corresponding to the first activity site through a designated camera, encode the original video signal to obtain an encoded video signal, and send the encoded video signal to the data processing module through an Internet channel; wherein the designated camera includes at least one of the following: an 8K ultra-high-definition camera, a 4K ultra-high-definition camera, and a high frame rate camera; The data processing module is used to encrypt the encoded video signal to obtain an encrypted video signal; A data distribution module, used for sending the encrypted video signal to a target terminal device through the Internet channel; The target terminal device is used to decrypt and decode the encrypted video signal to obtain the original video signal; wherein the target terminal device has the authority to use the original video signal.

2. The system according to claim 1, characterized in that The acquisition module comprises: A first camera is used to collect high-resolution video signals of the first activity site; wherein the first camera includes: an 8K ultra-high-definition camera and a 4K ultra-high-definition camera; High frame rate camera, used to capture high frame rate video signals of fast-moving scenes; An ultra-high-definition live switcher, used for switching and synthesizing the high-resolution video signal and the high-frame-rate video signal to obtain an original video signal; An encoding device, configured to encode the original video signal according to a preset first encoding format to obtain an encoded video signal; The transmission device is used to send the encoded video signal to the data processing module through an Internet channel.

3. The system according to claim 1, characterized in that The data processing module is also used for: Receive multiple encoded video signals corresponding to multiple activity sites respectively; transcode and encrypt the multiple encoded video signals to obtain multiple encrypted video signals.

4. The system according to claim 3, characterized in that The data processing module also includes: A signal receiving unit, used for receiving a plurality of encoded video signals corresponding to a plurality of activity sites respectively; A transcoding module, configured to perform transcoding processing on the plurality of encoded video signals respectively according to a preset second encoding format to obtain a plurality of transcoded video signals; An encryption module, used for respectively encrypting the plurality of transcoded video signals to obtain a plurality of encrypted video signals; The storage unit is used to store the multiple encrypted video signals.

5. The system according to claim 4, characterized in that The encryption module is used to adopt a digital copyright management standard to encrypt the multiple transcoded video signals respectively to obtain multiple encrypted video signals.

6. The system according to claim 1, characterized in that The data distribution module comprises: A program distribution module, used to obtain transmission parameters corresponding to the target terminal device, and transmit the encrypted video signal to the content distribution network module according to the transmission parameters; The content distribution network module is used to send the encrypted video signal to the edge server through the Internet channel, so as to send the encrypted video signal to the target terminal device through the edge server.

7. The system according to claim 4, characterized in that The system further comprises: a program on demand module; the program on demand module is used for: Acquiring a plurality of encrypted video signals stored in the storage unit; Receiving a first processing request from the target terminal device through a web page and / or an APP client, so as to process the obtained multiple encrypted video signals according to the first processing request; wherein the first processing request includes at least one of the following: a search request, a browse request, and a video-on-demand request; If the first processing request is the on-demand request, obtaining verification information corresponding to the target terminal device, and comparing the verification information with a pre-stored authorization list to obtain a comparison result; If the comparison result indicates that the target terminal device has the on-demand permission, obtaining a target video signal corresponding to the on-demand request, and sending the target video signal to the target terminal device; The target terminal device is used to decrypt and decode the target video signal to obtain a video signal corresponding to the on-demand request.

8. The system according to claim 2, characterized in that The first camera has a maximum resolution of 7680x4320 and a maximum frame rate of 120 frames per second.

9. The system according to claim 1, characterized in that The maximum frame rate corresponding to the high frame rate camera is 120 frames per second.

10. The system according to claim 1, characterized in that The target terminal device is a terminal corresponding to the theater screen.

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