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研究生: 邱詠偉
Chiou, Yung-Wei
論文名稱: 應用於資料保密的數位視訊介面上減少像素內與像素間資料傳輸變動的編碼方法
Trans-pixel Transition Minimization for Digital Video Interface with High-Bandwidth Digital Content Protection
指導教授: 邱瀝毅
Chiou, Lih-Yih
學位類別: 碩士
Master
系所名稱: 電機資訊學院 - 電機工程學系
Department of Electrical Engineering
論文出版年: 2007
畢業學年度: 95
語文別: 英文
論文頁數: 77
中文關鍵詞: 編碼方法資料保密數位視訊介面
外文關鍵詞: DVI, HDCP, encoding method
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  • 在目前的研究上,液晶顯示器在整個系統的功率消耗中佔了重要的部份,且液晶顯示器匯流排的功率消耗大略佔了整個系統的10%。隨著高解析度液晶顯示器的增加,消耗在液晶顯示器上的功率也就隨著增加。而液晶顯示器的匯流排在功率消耗上也就因為這各因素而迅速的成長。在本論文中提出一個新的編碼方式,用來降低液晶顯示器匯流排的功率消耗。此種編碼方法是應用在具有資料保密功能(HDCP)的數位視訊介面上(DVI)。在具有資料保密功能的數位視訊介面上傳送影像資料時,可以保護資料不容易被外界竊取。根據實驗的結果顯示,使用所提出來的編碼方法來進行影像的傳送,可以減少23.43% 的資料傳輸變動次數並且能減少22.74% 的功率消耗。

    Liquid Crystal Display (LCD) consumes a significant amount of power in a computer system. Among the sources of LCD system power consumption, LCD bus contributes around 10% of the total amount. With the ever increasing of the LCD resolution, the power consumption of a LCD system increases. The power consumption of the LCD bus will also grow rapidly. In this thesis, we propose a new encoding method for the Digital Visual Interface (DVI) standard with High-Bandwidth Digital Content Protection (HDCP), which is used to protect the image data transmitted through the DVI interface. The experimental results indicate that the proposed encoding method reduces 23.43% of transition counts on the physical layer and 22.74% for total power consumption.

    Chapter 1 Introduction 1 1.1 Motivation 3 1.2 Our Contributions 4 1.3 Thesis Organization 4 Chapter 2 Background 5 2.1 Digital Display Interface 5 2.1.1 Serial protocol standards 7 2.1.2 Digital interface standards 10 2.2 High-Bandwidth Digital Content Protection 14 2.2.1 HDCP cipher 17 2.3 TMDS Encoding Algorithm 19 2.3.1 XNOR/XOR step 20 2.3.2 DC balance step 21 2.4 TMDS Decoding Algorithm 22 2.5 Previous Work 24 2.5.1 TMDS without HDCP protected 24 2.5.2 TMDS with HDCP protection 31 Chapter 3 Proposed coding 34 3.1 TMDS Encoding algorithm analysis 34 3.2 Property of HDCP protected data 37 3.3 Proposed Encoding algorithm 39 3.4 Proposed Decoding algorithm 42 3.5 Trans-pixel Transition Minimization encoding method VS. S-TMDS 43 Chapter 4 Experimental Results 45 4.1 Simulation Environment 45 4.2 Verification 46 4.3 Trans-pixel Transition Minimization encoding method VS S-TMDS encoding method 49 4.4 The Trans-pixel Transition Minimization encoding method 52 4.5 Gate-Level Simulation Results 54 4.6 Power Model of Physical Wire 56 4.7 Overall Power Consumption Saving 57 4.8 The DC balance effect of the proposed encoding method 61 Chapter 5 Conclusions and Future Work 63 5.1 Conclusions 63 5.2 Future Work 63 Chapter 6 Appendix 64 References 73

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