Tag: Triple play PIA
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I. Overview
"The key to understanding the future of TV is to stop watching TV as a TV. From the perspective of bit, thinking about TV can bring it the most benefit." In the trend of telecommunications, radio and television, and computer "three networks integration", in recent years, The new media field with innovative information dissemination as its core business has begun to actively explore. The TV and telecom industries have penetrated each other and spawned the market demand of “user-centric integrated businessâ€. The new media business represented by video business, The demand for converged terminals and high-value customers has greatly accelerated the process of network and service integration, providing users with a variety of channels and options for accessing information, meeting the needs of people's diversification, specialization and individualization.
The trend of technology development in recent years shows that the so-called triple play is not a simple extension and superposition of the three independent networks. It is “expressed as technically consistent, interconnected at the network layer, and infiltrated and intersected at the business layer†. New media technologies developed and applied based on the Internet are interpreting the process of mixing telecom, broadcast television, and computer networks into a seamless state.
The so-called RIA (RichInteractiveApplications) is essentially a presentation layer of network applications. It cooperates with the web-based logic layer and data layer, and combines the advantages of fast response and strong interaction between desktop applications and the scope of Web application. Wide and easy-to-deploy features simplify and improve user interaction for web applications, providing a richer, more interactive and responsive user experience.
Under the general trend of "three networks integration", the communication platform with the characteristics of aggregated information will become the "new media" form of deep integration of business. The video sharing website represented by YouTube has already supported its video sharing core module with mature FlashRIA technology, which proves the feasibility of developing information dissemination platform by using FlashRIA technology.
Second, the system architecture
In 2007, Communication University of China launched the development of new media disciplines and research on key technologies for new media. One of the tasks was to research and implement a new media information aggregation platform based on RIA. After the pre-system architecture and analysis design work, the RIA new media platform hardware terminal uses a touch screen and a flat-panel TV. Since the touch screen is interactive, the interactive response and dynamic information transmission of the user operation are realized by a browser/server (B/S) method, and the flat-panel television terminal can use the closed-circuit television to broadcast the platform content.
The main terminal of the platform, the B/S mode adopted by the touch screen, deploys the system application and the system database on the network server, and each terminal accesses the architecture mode of the platform server through a standardized browser. The server analyzes and processes the request from the browser, accesses the database, performs query statistics or transaction submission of related requests, and returns the result to the client browser through the server. With the deepening of the triple play process, the Internet application framework is adopted. Browser/server-based (B/S)-based architectures are becoming widely adopted architectures.
Compared with the C/S structure, the B/S structure system has many advantages such as “zero†maintenance of the client, low development cost, and good portability. The specific characteristics are as follows:
(1) The user interface is highly uniform. The B/S structure, especially the B/S client of FlashRIA technology, consists only of browsers and plug-ins. The interface is highly unified. Users do not need to understand the server-side situation. The application upgrades, extensions, and changes have almost no impact on users. No need to upgrade, extend, etc. of the client.
(2) Based on cross-platform, open standards. "Triple network integration" will definitely promote the formation of open standards. Only by forming a neutral standard relative to the hardware platform and operating platform can the network be truly integrated. More open standards such as XML and ECMAt (including Actiont, t) are available in the design. The openness of these standards allows any provider to write products that adhere to these standards, and users can deploy applications incrementally, and the user's application systems and data formats will not change as platforms and technologies change. Get tangible protection. From a developer's perspective, open standards mean platform freedom, developers can develop applications with multiple tools on an open application framework, and deploy them across multiple hardware platforms, operating systems, and database systems.
(3) Easy to deploy. Although different servers can use different protocols and different formats to transfer and process information, they use a unified universal client (ie, a web browser) to display information from different server sources in a consistent manner with all web-based application frameworks. The application interacts, and the network-centric application is stored centrally in the server and downloaded to the client as needed, eliminating the headache of version maintenance. Files written in standard languages ​​such as XML enable users to read and retrieve the information they need on different platforms. This greatly reduces deployment costs.
(4) Multimedia dynamic application. Applications based on web application frameworks are typically dynamic applications that deliver dynamic data, support communication and collaboration, and combine audio, image, animation, video, and more, all under the control of the user. Communication and collaboration form the basis of a web application framework that can be written to enhance communication and collaboration.
The RIA under the B/S architecture is a next-generation network application service that combines the best user interface functions of desktop applications with the fast, low-cost deployment of web applications and the real-time and fast communication of interactive multimedia communication. FlashRIA uses FlashPlayer to provide a runtime environment that can host compiled applications (swf files, delivered via HTTP). The client uses an asynchronous architecture to connect to an existing back-end application server (such as PHP), which is safe, scalable, and good. Adaptable new service-oriented model driven by the adopted Web services. Integrated communication technology that combines sound, video and real-time conversations gives RIA an unprecedented online user experience. The following image shows the RIA application model:
The compatibility terminal of the platform - the flat-panel TV adopts the closed-circuit television broadcasting mode, and also has the characteristics of "easy deployment", and only needs to be adjusted to the corresponding channel when deploying.
Third, the network communication method based on FlashRIA technology
Due to the advantages of Flash's vector graphics system, FlashPlayer's high penetration rate and cross-platform, it has a unique advantage in the transmission of network images, animations and videos. After solving the communication problem with the server, Flash is used as the The presentation layer of the information dissemination platform can deliver various types of requests to the server through network communication, and can develop a network-based information dissemination platform with a good user experience.
Presentation layer: Designed with Flex framework, it is finally compiled into a swf file that can be accessed through a browser.
Server side: PHP + MySQL database.
For the purpose of dynamic interaction, communication between swf and the server can be implemented in a variety of ways:
(1) AMF protocol mode: AMF (Action Message Format) is a communication protocol developed by Adobe. It can quickly serialize and deserialize FlashActionScriopt objects, and transfer data in binary compression. It can interactively include any data format such as numbers, strings, objects, pictures, etc. It has high data security and fast transmission, thus providing Flash Player and server. A lightweight, high-performance communication method.
(2) XML method: Communication method based on XML standard, which has wide versatility and is convenient for exchanging data between different systems.
Fourth, the function module structure
The RIA-based information dissemination platform is a system that integrates and integrates information from multiple parties and distributes it through the network. Its functional module is different from traditional information publishing applications. It not only pays attention to the release of its own information, but also focuses on the integration of external information resources. The following diagram depicts the hierarchical architecture of platform functions:
Hierarchical architecture of information dissemination platform based on RIA
(1) Basic video module
As the most widely used information dissemination method in modern society, video has been widely accepted and become an indispensable part of the information dissemination platform. The video module designed by this platform adopts the flv format video file originally supported by FlashRIA technology, and the presentation layer design corresponding player, which is convenient for the user to control the video playback process, and record the video related information in the MySQL database, and realize the uploading of the video in the background. Delete and other operations.
(2) Content aggregation and mashup
As an information dissemination platform, rich and comprehensive information is essential, and the development of content aggregation technology has facilitated the integration of effective information. On the one hand, XML can be parsed, RSS can be parsed, and information from different data sources can be integrated on the same platform. On the other hand, if the information source does not provide an RSS feed, you can analyze the specific page and find the required clip by means of regular expressions. After the integration of the information is completed, the integrated information can also be considered to be "mashed up", so that the degree of correlation between the information is further improved, thereby providing users with richer and more vivid information.
(3) Combined with communication services
The new media under the triple play will present a business model that is connected to the communication service. This is a personalized, subscription-based, and active push-based instant service that breaks the user's terminal limitations and makes information services ubiquitous.
V. Summary
The integration of the three networks is an inevitable trend of technology and business development. The broadcasting industry has also entered an era of emphasizing participation and interaction. The RIA new media technology for triple play is different from the traditional one-way broadcast media for many years. The core is to aggregate different information sources and interactive experiences. Its development will bring about a comprehensive innovation of the media service system, so as to better meet the strong interaction and business diversity needs of users.
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