臺灣博碩士論文加值系統

近年來，監視系統已經自傳統的影帶式的類比監視系統轉變為數位化的監視系統，然而，自影像與聲音訊源端到監視系統接收端的訊號仍是以類比型式在傳送，因此即始是數位化的監視系統仍需如傳統類比式系統那般建造類比傳輸網路，使得訊號品質最終仍在傳輸時受到限制，監視區域亦侷限在訊號不會過度衰竭之距離。
隨著寬頻網路存取的普及，影像與聲音這類資料量大的可已數位化的型式透過網路載體傳送，影像與聲音訊號之品質將不會受到距離或環境等因素影響而有差異，所以，本文設計了一個以網路連結為基礎之監視系統，並提出了許多克服網路傳輸影音問題之技術。此新一代的監視系統乃是以分散式運算架構組成，因此我們可以嵌入式的RISC處理器設計中央系統，它有極佳的網路連結能力，並且可完全遠端存取與控管，樹狀的監視網路連結架構可使管理集中或分散，成為一有彈性之監視系統，對於監視系統網路化後所產生的頻寬、同步、資料傳送等問題，本文提出數個特殊技巧將其解決，並經實驗測試，另加入了於嵌入式的監視系統上未曾有的DVD多區段備份子系統，提升大容量儲存媒體存取能力。

Surveillance system has been changed from traditional tape based analog system to digitally recorded system in recent years. However, signals between video and audio sources and receiving site are transmitted in analog form, digitalized surveillance system still needs analog transmission infrastructure to be built as analog surveillance system does, leads to quality of signal limited, and monitoring area is also limited.
With the broadband Internet access, video and audio signals could be delivered through network carrier in digital form. Quality of video and audio are not affected by monitoring area or environmental noises, hence we built an Internet connected surveillance network, and proposed many technique to support delivering audio and video on the net. This new generation of surveillance system is organized as distributed architecture, so computations are distributed, such that we built the system on embedded RISC processor. With the great networking capability, the system is completely remote accessible. The hierarchical network architecture could allow control permissions centralized or de-centralized, results in a flexible surveillance system. We also proposed several techniques to solve the issues that networked surveillance system encountered, such as bandwidth, synchronization, and data transmission issues. Pluses a DVD multi-session backup subsystem to enhance accessibility of large capacity mediums.

中文摘要 i
Abstract ii
Acknowledgement ii
Table of Contents iv
List of Figures vi
List of Tables vii
Chapter 1 Preface 1
1.1 Motivation 1
1.2 Background 2
1.3 Paper Structure 4
Chapter 2 Preliminaries 5
2.1 Embedded System 5
2.2 Embedded Operating Systems 8
2.2.1 uClinux 9
2.2.2 Windows CE 11
2.2.3 ARM Linux 12
2.3 Embedded Processors 14
2.3.1 RISC vs. CISC 14
2.3.2 MIPS 16
2.3.3 SuperH 17
2.3.4 ARM 18
2.3.5 XScale 20
Chapter 3 Designing the System 21
3.1 Introduction 21
3.1.1 System Overview 22
3.1.2 Network Topology 24
3.1.3 Delivering Data 26
3.2 Hardware System 29
3.2.1 The EP9312 Microprocessor 29
3.2.2 Hardware Architecture 32
3.2.3 Data Backup Interface 33
3.3 Applied Software Technologies 34
3.3.1 ActiveX 34
3.3.2 DirectX 36
3.3.3 MMX & SSE Extensions 37
3.4 Software System 40
3.4.1 Software Architecture 40
3.4.2 Bandwidth Allocater 46
3.4.3 A/V Snchronization 48
3.4.4 Delivering MPEG Video 50
3.4.5 File System Management 51
3.4.6 Decoupling Data Stream 54
3.4.7 Recorded Data Backup 56
Chapter 4 Experiments and Results 58
Chapter 5 Conclusions and Future Works 62
References 63





List of Figures
FIGURE 2-1 APOLLO GUIDANCE COMPUTER AND CONTROL PANEL 6
FIGURE 2-2 UCPENGUIN AND UCLINUX LOGO 10
FIGURE 2-3 NETWINDER, A 275MHZ STRONGARM BASED DESKTOP COMPUTER 13
FIGURE 2-4 RISC V.S. RISC 15
FIGURE 2-5 MIPS64 20KC ARCHITECTURE 16
FIGURE 2-6 SUPERH LOGO 17
FIGURE 2-7 SAMSUNG ARM920T BASED PROCESSOR 19
FIGURE 3-1 A TWO-TIER SURVEILLANCE NETWOR 24
FIGURE 3-2 DATA FLOW OF A TWO-TIER SYSTEM 25
FIGURE 3-3 DATA FLOW OF TRANSPARENT MODE 26
FIGURE 3-4 DATA FLOW OF PASS THROUGH MODE 27
FIGURE 3-5 DATA FLOW OF CONTROL MESSAGES 28
FIGURE 3-6 SIMPLIFIED BLOCK DIAGRAM OF EP9312 29
FIGURE 3-7 THE HARDWARE ARCHITECTURE OF SURVEILLANCE CENTER 32
FIGURE 3-8 CONNECTING DVD/CD REWRITABLE DRIVE TO STATIC MEMORY INTERFACE 33
FIGURE 3-9 EMBEDDING CLIENT APPLICATION INTO BROWSER 35
FIGURE 3-10 PARATICAL FAST 1-D DCT ALGORITHMS WITH 11 MULTIPLICATIONS 38
FIGURE 3-11 PARALLEL INDIRECT 2-D DCT 39
FIGURE 3-12 THE SOFTWARE ARCHITECTURE OF SURVEILLANCE CENTER 41
FIGURE 3-13 LAYERED COMPONENTS VIEW OF SURVEILLANCE CENTER 42
FIGURE 3-14 THE SOFTWARE ARCHITECTURE OF CLIENT APPLICATION 44
FIGURE 3-15 THE BANDWITH ALLOCATER 47
FIGURE 3-16 AUDIO/VIDEO SYNCHRONIZATION 49
FIGURE 3-17 DATA STORAGE STRUCTURE 52
FIGURE 3-18 DECOUPLING AND AUTOMATIC FRAME DROPPING 54
FIGURE 3-19 ORGANIZATION OF ISO-9660 FILE SYSTEM 57
FIGURE 3-20 BATCH RECORDING 57
FIGURE 4-1 THE EDB9312 DEVELOPMENT PLATFORM 58
FIGURE 4-2 CUSTOM DESIGNED EP9312 DEVELOPMENT BOARD 59
FIGURE 4-3 SIMPLE ONE-TIER SURVEILLANCE NETWORK 59
FIGURE 4-4 REMOTE LIVE VIEW SCREENSHOT 61

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