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The Design and Implementation of OSD in Digital Media SOC

Author: MaChao
Tutor: GengXiangMing
School: Shanghai Jiaotong University
Course: Signal and Information Processing
Keywords: OSD Digital media SOC Pipeline Alpha Blending FPGA
CLC: TN873
Type: Master's thesis
Year: 2009
Downloads: 92
Quote: 0
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Abstract


OSD is short for On Screen Displayer that can support game, information browse and some basic image processing functions, providing a strong support for man-machine conversation in digital media SOC (System on Chip) and has become an important component for the success in the market competition, especially in our days with the more and more powerful media processing engine.Base on the SOC requirement, such an OSD is analyzed and implemented: the raster scan system for display is coupled with image processing unit in order to reduce SOC CPU burden; the OSD can support a lot of features including six layers for display, graphic layer blending with video layer and some two-dimension image processing functions. In the design, base on OSD theory, we optimize the architecture of OSD and extend its application field by software and hardware co-design; meanwhile, due to OSD’s many features, we apply the programmable methodology on the design, which means customers can use the OSD IP in different ways on their needs, thus lightening repetitive jobs and reducing time. This paper is organized as follows. We firstly introduce principles of image processing about OSD system; in the second part, OSD system high level design is our major discuss objection; then, the detail knowledge about hardware design in the co-design, implementation and simulation is considered as the key part in the paper; at last, we analyze crucial challenges we encountered in the development and give our solutions.

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CLC: > Industrial Technology > Radio electronics, telecommunications technology > Radio equipment,telecommunications equipment > Terminal equipment > Display device,the display
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