The Design and Implementation of Digital-analog Integrated TV Software SDK System Based on SoC Chip
|Course||Electronics and Communication Engineering|
|Keywords||Digital TV SoC chip Software system design SDK software Drive digital-analog integrated TV|
In recent years, with the development of technology and the support of national policy, the digital television signal broadcast is gaining popularity than ever before. Thus, the structure of television industry is undergoing revolutionary changes, and the production of digital TV around the world increases every year. In pace with the coverage of the digital television broadcast signal in the second and third tier cities and the digital television signals changing from the STB to the digital TV integrated machine, the rapid development of digital television is not only a trend, but a reality.The core of the digital TV is the SoC chip. Since the chip has high integration and technical threshold, currently, the solution providers of digital TV SoC chip mostly monopolizes by foreign chip companies, basically concentrated in Taiwan and the United States. Especially for the SoC chip program of digital TV integrated machine is less and less. This issue is based on the first domestic CPU digital TV SoC chip, and at the same time it is compatible with the existing analog signal. It focuses on the SDK software module design and implementation in the self-developed of digital-analog machine terminal software and hardware solutions.Relying on the digital-analog integrated machine project of the self-developed SoC chip, this thesis proposes digital-analog machine terminal software and hardware solutions with self-intellectual property rights. Firstly, it generalizes the digital TV SoC chip specifications and briefly introduces the hardware platform and system design solution using on the subject. Then it designs and implements the digital TV software combined with digital TV hardware platform terminal solutions. The digital TV software system we studied includes system layer, middleware layer and application layer, and this paper makes a simple introduction to the architecture design and realization of these layers. Finally, it expounds the most important part of digital television and also the key implementation part of this thesis-system layer.System layer which is at the lowest level of the digital-analog integrated machine software system is the interface of software systems and hardware systems. The SDK software designed in this thesis is the core technology of system layer. SDK software closely integrated with the SoC chip, provides the drive program which can support the operation of the chip. It relates to a lot of modules and designs many technical points. Here elaborates the important module function and implementation of the SDK, including, ATV Tuner Module, ATV Demodulator Module, Analog Audio Module, Analog Video Module, Audio Decoder Module, and so on. It is also a key of the design and implementation of this thesis.