Key Techniques Research Of Smart TV Software Platform

With the implementation of the "Tri-network convergence" and "promotingbroadband speed" projects, the “smart TV” has become the most popular keywords after3DTV in TV industry. Moreover, smart TV platform becomes one hot research topicafter the smart phone platform. In all research of smart TV software platform, theAndroid-Based and Web-Based smart TV platform attract more attention. However,the original android system cannot support digital television broadcasting service, andits multimedia system cannot support the special requirements of television. These havebecome the primary problem of android-based smart TV platform development. Inaddition, along with the content becoming richer and the emergence of tremendoussmart TV applications, overloaded information makes the human-computer interactionbecome more complex, and it is more difficult to match the massive content with theindividual needs. With the smart TV platform being opened, security issues becomeanother focus of concern.Aiming at these problems, based on the industrialization of key technologies ofSichuan strategic emerging industries major project for “Development andindustrialization for new digital home smart terminals of Tri-network convergence”, themain research of this thesis includes: TV and multimedia convergence technology,voice-based interactive Web technology, context-aware key technology based on thevideo image object recognition, smart TV system security model and technicalarchitecture.The main works and innovations of this thesis are as follows:1. Propose a multimedia terminal architecture model for smart TV. Based on thethorough analysis of the original Android multimedia framework and the digital TVbroadcasting framework, along with the multimedia characteristics of TV, this thesisproposes a terminal architecture model which integrated TV and multimedia, and aseries of solutions for TV middleware, multimedia engine and corresponding resourcemanagement. This thesis implements functional converging between broadcasting andinternet. 2. Propose a web multi-service architecture model based on voice interactive.Aiming at web applications hosting needs, this thesis proposes the smart TV webarchitecture, and extends the TV native applications and voice interaction capabilitiesinto web architecture by JavaScript extensions mechanism. The web architecture makesthe smart TV become a full voice-interactive web multi-service terminal.3. Propose the overall architecture of context-aware based on user behavior, as wellas context-aware model and algorithms for video-based image object recognition. Inorder to perceive the user behavior and to provide personalized services, this thesisresearches and designs a kind of smart TV context-aware architecture based oncollaborating between terminal and cloud-service. Moreover, according to thetheoretical modeling on the specialty image recognition, an object’s outline training andrecognition algorithms of the dynamic background are designed. Experiments show thatthe model and the object recognition algorithm reserve higher capacity. This researchlays a good foundation for the future personalized service study in terms of userbehavior context.4. Propose a security architecture model for smart TV platform. In order to solvethe system security concerns in the open platform, the security architecture for theandroid-based smart TV platform is desired. Thus, a complete security model for smartTV platform is submitted. Moreover, based on the security model and achieved schema,more emphasis is given on the system security loading, end to end security guaranteeapplication, anti-tampered video content and anti-cracked CA. The related technologyresearch is adopted as an optimization technology solution by smart TV standard groupof the CVIA (CHINA VIDEO INDUSTRY ASSOCIATION).