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研究生:劉百振
研究生(外文):Pai-Chen Liu
論文名稱:數位機頂盒的影像品質研究:維持品質指標下改進測試生產力
論文名稱(外文):Video Quality in Set-Top Box:Improving Test Productivity While Retaining Quality Index
指導教授:林盈達林盈達引用關係蔡文錦蔡文錦引用關係
指導教授(外文):Ying-Dar LinWen-Jiin Tsai
學位類別:碩士
校院名稱:國立交通大學
系所名稱:電機資訊學院碩士在職專班
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:2006
畢業學年度:94
語文別:英文
論文頁數:57
中文關鍵詞:機頂盒機上盒影像品質自動化測試多媒體數位電視量測測試方法數位家庭
外文關鍵詞:set-top boxSTBvideoqualityautomated testtestmultimediadigital TVmeasurementtest methodologydigital home
相關次數:
  • 被引用被引用:1
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  • 下載下載:27
  • 收藏至我的研究室書目清單書目收藏:0
在數位家庭與多媒體產品中,數位機頂盒扮演著極為重要的溝通橋樑,其中讓使用者能直接感受到產品性能優劣的第一印象,莫過於影像與聲音的品質。然而一般影像測試時,需要使用各種不同的測試圖形,所以我們依據影像品質指標,提出一種組合式圖形測試方法:把二十四種個別單一的圖形,構成一種組合式圖形。另外,在數位機頂盒系統品質測試中,需要測試影音訊號輸出品質、數位壓縮的相容性與傳輸網路所造成的影響,若要全部測試則高達329,726,592項,故我們使用一台電腦控制了影音訊號源、數位壓縮設備、傳輸網路、影像聲音品質分析儀,實作了自動化測試系統,此一系統可以大大地縮短測試時間。綜觀上述之研究其優點:降低測試複雜性、縮短測試週期、提高產品競爭力進而大幅提升測試生產力。
Among many multimedia products, digital set-top box plays a key role as consumer promise equipment. The key performance index for a set-top box appears to be its video and audio quality. The video quality is benchmarked by many different types of video patterns. In this thesis, we propose a Video Combination Technique (VCT) to integrate twenty-four video sources into a single one. Thus, the benefits of VCT include lower test complexity, lower test cycles and cost saving. From the system quality point of view, there are testing network transmission layer, compression layer and video/audio output signal layer. All the tests are sum up to be 329,726,592 items. Therefore, we implement an automated test measurement system (ATMS) to save the test cycles and time. So set-top box manufacturing cost is lower and productivity is improved.
LIST OF FIGURES
LIST OF TABLES
CHAPTER 1. INTRODUCTION
CHAPTER 2. BACKGROUND
2.1 SET-TOP BOX CATEGORY OVERVIEW
2.2 SET-TOP BOX SYSTEM TOPOLOGY
2.3 LAYERS OF TEST ITEM
2.4 VIDEO QUALITY INDEX
2.5 COMPOSITE VIDEO
CHAPTER 3. PROBLEM STATEMENT
3.1 COMPLEX VIDEO PATTERNS
3.2 MPEG SIDE EFFECT
3.3 A LARGE NUMBER OF TEST CASES
CHAPTER 4. OPERATION MODEL
4.1 VIDEO COMBINATION TECHNIQUE (VCT)
4.2 AUTOMATION TEST MEASUREMENT SYSTEM (ATMS)
CHAPTER 5. IMPLEMENTATION
5.1 VCT
5.1.1 Video Scanning Line Assignment
5.1.2 Frame Editing Flow Chart
5.1.3 Guard Video Scanning Line
5.2 ATMS
5.2.1 Controller PC Working Flow Chart
5.2.2 Menu Tree of ATMS
5.2.3 System Implementation
CHAPTER 6. EVALUATION
CHAPTER 7. CONCLUSIONS AND FUTURE WORKS
REFERENCES
APPENDIX - ACRONYMS DEFINITION
[1] Chien-Chin Yen, “Trends of Interactive TV Trends of Interactive TV & Triple Play”, Chunghwa Telecom, The 13th Annual Wireless & Optical Communication Conference, Taipei, 2004.

[2] Jack Krooss, “MediaPump MediaSplice Technology Overview”, Optibase Inc., , http://www.optibase.com/

[3] Radyne ComStream Inc., “Video Performance Measurements in DTV Transmission Systems”, A Tiernan White Paper, May 2001.

[4] D K Fibush, “Video Testing in Modern Television Systems”, International Broadcasting Convention, 12-16 September 1996, Conference Publication No. 428, IEE, 1996.

[5] IEEE Std 511-1979, “IEEE Standard on Video Signal Transmission Measurement of Linear Waveform Distortion”, December 11, 1979.

[6] P Kavanagh, “Patterns For All Formats”,International Broadasting Convension, 14-18 September 1995, IEE 1995.

[7] Tektronix Inc. Ltd., “A Guide to Picture Quality Measurements for Modern Television Systems”, white paper, http://www.tek.com/Measurement/
App_Notes/Technical_Briefs/digital_QoS/25W_14000_1.pdf

[8] Michael Robin; Michael Poulin, “Digital Television Fundamentals: Design and Installation of Video and Audio Systems”, McGraw-Hill, 1997.

[9] Nishida, Y.; Nakasu, E.; Aoki, K.; Kanda, K.; Mizuno, O.;”Statistical analysis of picture quality for the digital television broadcasting”, Broadcasting Convention, International (Conf. Publ. No. 428) 12-16 Sept. 1996 Page(s):337 – 342.

[10] Koga, T.; Yokosawa, K.; Ashizawa, K.; Hontani, H., ”Improvement of degraded picture quality due to scanning frequency difference between TV camera and PC display with CRT”, Circuits and Systems, 2004. MWSCAS '04. The 2004 47th Midwest Symposium on Volume 1, 25-28 July 2004 Page(s):I - 309-12 vol.1, Digital Object Identifier 10.1109/MWSCAS.2004.1353989.
[11] Tektronix Inc. Ltd., “NTSC Video Measurements”, white paper.

[12] “Video Reference”, http://www.videotest.com/video_ref.html

[13] Leader Instruments Corp., “Differential Phase and Gain Revised”, Teleproduction Test Volume 1, Number 12.

[14] Harmonic Inc., “Guidelines for Video Quality Evaluations”, white paper.

[15] Tektronix Inc. Ltd., “A Guide to Digital Television Systems and Measurements”.

[16] David K. Fibush, “Video Testing in a DTV World”, SMPTE Journal, 2000.

[17] Mike Knee, Snell & Wilcox Ltd., “A Single-ended Picture Quality Measurement for MPEG-2”, http://www.snellwilcox.com/

[18] John Watkinson, Snell & Wilcox Ltd., “The Engineer’s Guide to Decoding & Encoding”, http://www.snellwilcox.com/

[19] John Fletcher, Michael Prior-Jones, “MPEG-2 Video Quality Versus Quantiser Scale”, BBC Research & Development, UK.

[20] George Gazzam, Sam Knight, “USE OF DIGITAL VIDEO TECHNOLOGY FOR REAL-TIME EXERCISE MONITORING AND DEBRIEF OF COLLECTIVE TRAINING APPLICATIONS”, L-3 Communications Link Training and Simulation.

[21] John Watkinson, “Television Fundamentals”, JButterwirth-Heinemann, 1996.

[22] Tektronix Inc. Ltd., “NTSC Systems Television Measurements”.

[23] Tektronix Inc. Ltd., “Measuring Noise in Video Systems”.

[24] Andrew F. Inglis & Arch C. Luther, “Video Engineering 2nd Edition”, McGraw-Hill, 1996.
[25] J. Lauterjung, “A Measurement System For The Test Of DVB Receivers”, International Broadcasting Convention, 14-18 September 1995, Conference Publication No. 413, IEE 1995.
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