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研究生: 劉書宏
Liu, Shu-Hung
論文名稱: 適用於數位視訊介面之減少轉換機率的有效編碼方法
Efficient Transition Minimization Coding for Digital Visual Interface(DVI)
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: 2006
畢業學年度: 94
語文別: 英文
論文頁數: 65
中文關鍵詞: 最小化傳輸差分信號數位視訊介面
外文關鍵詞: DVI, TMDS
相關次數: 點閱:71下載:2
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  • 液晶顯示器在整體系統功率消耗中佔了很大的部份。除了液晶面板及背光模組之外,有很大一部分的功率耗損(約10 %)消耗在液晶顯示器的匯流排上。拜低功率顯示科技,例如自我激光式二極體(OLED)的發明,以及越做越小的顯示控制器之賜,液晶顯示器匯流排在功率消耗上將會扮演越來越吃重的腳色。在本論文中提出一個可以減少轉換機率的編碼方法,稱為Efficient-TM。它適用於一種液晶顯示器(LCD)上的數位串列顯示介面,數位視訊介面(DVI)。Efficient-TM編碼方法提高了原先使用在DVI規格中的最小化傳輸差分信號(TMDS)編碼方法的效率以及減少資料的轉換機率。我們所提出的設計在整體的傳輸上能節省更多的功率消耗。根據實驗結果顯示,使用我們所提出的編碼方法可以減少34.47 %的轉換次數並且能減少29.35 %的功率消耗。

    The Liquid Crystal Displays (LCDs) consume a significant portion of the total system power dissipation. Besides LCD panel and backlight, a significant fraction (around 10%) of the power consumption is consumed by the LCD bus. With the advent of new display technology like self-emitting organic LED (OLED) and shrinking feature size of I/O controllers, the impact of power consumption of LCD bus will become more and more important in the future. In this thesis, we proposed a transition minimization coding scheme, called Efficient-TM, for the Digital Visual Interface standard (DVI), a digital serial display interface for LCDs. The Efficient-TM coding increases the efficiency of the original Transition Minimized Differential Signaling (TMDS) encoding algorithm which is used in DVI and reduces the transition counts further. Although our proposed design incurs power overhead for encoder and decoder, it saves more power on the DVI channel. From experimental results, the proposed coding scheme reduces 34.47% of transition counts. And the total power reduction is 29.35%.

    Chapter 1 Introduction           1 1.1 Motivation                1 1.2 Our Contributions            4 1.3 Thesis Organization           4 Chapter 2 Background            5 2.1 Analog CRT to Digital Display 5 2.2 Digital Display Interface       7 2.3 DC Balanced Mechanism         15 2.4 Digital Visual Interface (DVI)    16 2.5 TMDS Encoding Algorithm        19 2.6 TMDS Decoding Algorithm        23 2.7 Previous Work              25 Chapter 3 Efficient Transition Minimization Coding 38 3.1 TMDS Algorithm Analysis        38 3.2 Efficient-TM Encoding          41 3.3 Efficient-TM Decoding          44 Chapter 4 Experimental Results       47 4.1 Simulation Environment         47 4.2 Verification               48 4.3 Simulation Results           49 4.4 Gate-Level Simulation Results     51 4.5 Analysis                 54 4.6 Power Model of Physical Wire     54 4.7 Overall Power Consumption Saving   55 Chapter 5 Conclusions and Future Work  59 5.1 Conclusions               59 5.2 Future Work               59 Reference                    61

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