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研究生:張益瑞
研究生(外文):I-Jui Chang
論文名稱:地面數位視訊廣播應用之迷你型SCART機上盒系統設計與建構
論文名稱(外文):Design and Implementation of a Mini SCART Set-Top Box System for DVB-T Applications
指導教授:白英文白英文引用關係
指導教授(外文):Ying-Wen Bai
學位類別:碩士
校院名稱:輔仁大學
系所名稱:電子工程學系
學門:工程學門
學類:電資工程學類
論文種類:學術論文
論文出版年:2010
畢業學年度:98
語文別:中文
論文頁數:67
中文關鍵詞:數位視訊地面廣播機上盒歐洲標準類比影音傳送介面矽晶片調諧器
外文關鍵詞:DVB-TSet-Top BoxSCARTSilicon Tuner
相關次數:
  • 被引用被引用:0
  • 點閱點閱:308
  • 評分評分:
  • 下載下載:7
  • 收藏至我的研究室書目清單書目收藏:0
在本篇論文中,我們提供了一個系統設計的方法可以強化數位機上盒的研發流程,並且協助我們在進行硬體整合與設計時有效降低系統發展階段的錯誤率並提高產品設計品質。藉由這些方法與步驟,我們逐步實現了一個入門級地面數位視訊廣播機上盒系統的完整建構過程,因為高整合性的系統單晶片與矽晶片調諧器的選用合宜,並且結合機構外觀的需求,我們成功地將系統電路使用的空間小型化,並獲得最佳的印刷電路板經濟尺寸(長54mm x寬52mm),同時電源電路的良好配置與低電源漣波也有效地降低了整體功率消耗而且USB播放功能提供了多媒體娛樂的享受並擴展產品附加價值。為了提高系統穩定度與確保高速訊號的傳輸特性,我們聚焦在印刷電路板佈局、疊構配置的處理、特性阻抗的計算與重要效能的調校,而且在完整的測試架構規劃下,我們能充份驗證與改善射頻接收效能與影音訊號的輸出,並且針對過程中面臨到的各種問題提出合適的解決對策,使產品達到小型化、輕量化與高品質的設計目標。有鑑於數位機上盒的應用範圍相當廣泛,因此我們也提出了實際應用在智慧卡模組的電源失效偵測電路設計。
In this paper we provide a system design method to enhance the research and development process of a Set-Top Box which also assists us in making the hardware integration work. Our implementation reduces the probability of errors at the system development stage and improves the product design quality. By means of this method and procedure we progressively achieve a complete implementation process for the entry-level DVB-T Set-Top Box. We select a high integration of system-on-chip (SOC) and silicon tuner, and require a high standard of both product mechanical design and appearance design. We successfully minimize the total area of the system and obtain the most economic PCB (Printed Circuit Board) dimension, at 54mm x 52mm. Meanwhile the power supply circuit reduces the total power consumption efficiently due to its good configuration and low power ripples. Furthermore, the USB playback function provides the enjoyment of multimedia entertainment and extends the product’s added-value. To increase the system’s stability and to guarantee the characteristics of high speed transmission we focus on the PCB layout and the stack-up configuration, the calculation of the characteristic impedance and the performance adjustment for several major target items. Under an intact test environment set-up plan we are able to verify the reception performance of the front-end and the output of audio and video signals. Thus we can come up with the proper solution for any issue we may be facing during the design period and let the design object approach miniaturization, weight reduction and high quality. According to the number of applications of the Set-Top Box, its range will be extended by different conditions of use, so here we also provide an actual application design including a power failure detection circuit for the smart card module.
中文摘要…..…………………………………………………………..…………………i
英文摘要………………………………………………...………………………………ii
誌謝…..…………………………………………………..……………………….….…iii
目錄…..…………………………………………………..……………………….….…iv
表目錄………………………………………………….…………….…………….…vi
圖目錄…………………….…………………….…………………..………………..vii
符號說明……………….…………………….…………………..…………………..ix
專有名詞表……………….…………………….…………………..…………………..x
一、 緒論 ......................................................................................................... 1
1.1 研究動機......................................................................................... 1
1.2 相關研究綜覽................................................................................. 2
1.3 論文架構......................................................................................... 3
二、 數位電視的觀念........................................................................................... 5
2.1 前言................................................................................................. 5
2.2 數位電視的優勢............................................................................. 5
2.3 數位廣播系統的差異…................................................................. 7
2.4 MPEG-2原理簡介.......................................................................... 8
2.4.1 MPEG-2系統架構................................................................. 8
2.4.2 MPEG-2編碼與解碼架構..................................................... 9
2.4.3 數位電視壓縮標準未來發展............................................... 10
2.5 數位電視解析度探討..................................................................... 10
2.6 數位電視與數位機上盒的市場趨勢............................................. 12
三、 系統整體設計與實現................................................................................... 14
3.1 系統應用面簡介............................................................................. 14
3.2 系統研發設計流程......................................................................... 15
3.3 硬體架構與組成............................................................................. 17
3.3.1 電源電路設計架構............................................................... 22
3.3.2 調諧器的應用與前端設計................................................... 24
3.3.3 印刷電路板佈局設計........................................................... 28
3.4 系統性能量測方式建構…............................................................. 31
3.4.1 射頻接收靈敏度測試架構................................................... 31
3.4.2 載波/雜訊比測試架構......................................................... 32
3.4.3 反射損失與電壓駐波比測試架構....................................... 32
3.4.4 影像與聲音訊號測試架構................................................... 33
3.4.5 紅外線接收器測試架構....................................................... 34
3.4.6 主要零件工作溫度量測....................................................... 35
3.5 系統軟體架構................................................................................. 36
3.5.1 系統軟體組成....................................................................... 36
3.5.2 使用者介面說明................................................................... 38
3.5.3 數位機上盒作業系統比較................................................... 40
3.6 智慧卡模組電源失效偵測電路設計............................................. 41
3.7 電磁干擾中輻射測試的改善......................................................... 45
3.8 印刷電路板特性阻抗的計算......................................................... 48
四、 設計驗證與結果........................................................................................... 51
4.1 射頻接收靈敏度測試..................................................................... 51
4.2 載波/雜訊比測試........................................................................... 55
4.3 週邊功能測試................................................................................. 57
4.3.1 紅外線接收器測試............................................................... 57
4.4 相關產品設計比較......................................................................... 58
五、 結論............................................................................................................... 60
5.1 總結................................................................................................. 60
5.2 未來規劃與方向............................................................................. 60
參考文獻………………………………………………………………………...…..…62
附錄……………………………………………………………………….……………67
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