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The Design and Application of Embedded Graphic User Interface for Digital TV Set-Top-Box

Author: ChenYanFei
Tutor: ZhaoYueSong
School: Wuhan University of Technology
Course: Applied Computer Technology
Keywords: Digital TV Set-top boxes Embedded Systems Graphical User Interface OSD
CLC: TN948.5
Type: Master's thesis
Year: 2005
Downloads: 412
Quote: 6
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Abstract


Embedded graphical user interface is a dialogue between embedded devices and user interfaces. With the increasingly widespread use of embedded devices in people's daily life, people are more and more urgent requirements of high-performance embedded human-machine graphical interface. In this context, the key technologies of embedded systems - Embedded GUI research has a very important significance. Digital TV STB (Set-Top-Box) is a typical embedded devices. It is a connected to a TV network terminal equipment, for the digital television signal is converted into an analog signal, by decoding restores the compressed image on the digitized sound signal to produce analog video and audio signals to be supplied to the viewers and quality television programs. It contains a digital TV demodulation and decoding core technology, therefore, the development of digital TV set-top boxes of this period is very important to promote the development of China's digital TV industry. Subject to the development of a digital TV satellite set-top boxes, embedded GUI research and practice, under the conditions of the hardware and software of the set-top box device, in order to meet its main functional requirements for the graphical user interface program development build a reliable embedded GUI platform. Made an overall analysis of digital TV set-top boxes throughout the system, GUI development, and implementation requirements, the overall design of the set-top box GUI system. First, given the modular design of the GUI system, the entire GUI system is divided into three modules: the graphics engine module, the core mechanism of the GUI module, GUI object module from the function. And divided the internal relations between the various modules, clear GUI system in the entire set-top box system-level relations. Then analyze the design and implementation of the various modules. Module design of the graphics engine, first start from the OSD device drivers, graphics display memory design, completed basic drawing and bitmap operations to achieve graphics engine. The core mechanism module design targeted programs, such as: work mode thread implemented client / server mode, the GUI system uses message-driven mechanism. GUI object module, the dialog box and the design of the control program. Finally, according to the demand, proposed a hierarchy is clear, user-friendly digital television user interface program, and completed the implementation of the main interface menu in the GUI system. Practice has proved that the GUI system better able to meet the requirements of the graphical user interface design.

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > TV > TV and television equipment > Television transmitter and receiver equipment
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