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平面顯示器 電子系統設計技術要項

平面顯示器 電子系統設計技術要項. 平面顯示器. 電漿 ( Plasma) 背投 ( Rear Projection) 液晶穿透式 微機電反射式 矽上液晶反射式 液晶 ( LCD)  LCD TV 是未來的明星工業. Subject. Picture Sound Connection Information Reception Multimedia function. Picture Quality Factors. Brightness Contrast Color Sharpness Viewing Angle

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平面顯示器 電子系統設計技術要項

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  1. 平面顯示器電子系統設計技術要項

  2. 平面顯示器 • 電漿 (Plasma) • 背投 (Rear Projection) • 液晶穿透式 • 微機電反射式 • 矽上液晶反射式 • 液晶 (LCD)  LCD TV 是未來的明星工業

  3. Subject • Picture • Sound • Connection • Information • Reception • Multimedia function

  4. Picture Quality Factors • Brightness • Contrast • Color • Sharpness • Viewing Angle • Response Time • Uniformity • Jaggy • Jerky

  5. A Typical Picture Specification • Screen Size : 30" (76 cm) • Visible Screen Size : 75 cm (29,53”) • Display : LCD WXGA Active Matrix TFT technology • Resolution 1280x768 (x3) pixels • Response time LCD : 16 ms • Brightness : 450 cd/m2 • Contrast Ratio : 350:1 • Viewing Angles : 176H/176V • Anti Reflex Coated Screen

  6. Brightness More backlight

  7. Contrast Whiter and blacker

  8. Gamma Correction  The detail of black and white field

  9. Color - cross color Cross-color

  10. Color – flesh tone correction Too healthy

  11. Color – white balance & color temperature Black Body Locus 5300K 6500K 9300K

  12. Color Temperature Normal Warm Cool

  13. Sharpness More clear edge

  14. Viewing Angle Good Lower contrast, color Bad

  15. Response Time Tailing

  16. Uniformity Mura

  17. Jaggy

  18. Jerky – 3:2 pull-down Artifact Film mode Video mode

  19. Jerky – motion blur

  20. Panel Technology: IPS vs MVA Source: JPMorgan estimates, December 2003

  21. PQ Decision Weighting in LCD TV CONTROL TUNER IR/KBD RF STEREO DECODER AUDIO PROC IF NTSC PAL SECAM IF DATA PROC SIF CVBS YUV CVBS LUMA PROC De-int. LUMA/ CHROMA SEP S SCART YPbPr CS CHROMA PROC SCALER 480i/576i 480p/576p 1080i 720p SYNC SEP HS/VS POST ENHANCE. LCD panel RGB PC VGA/DVI 1394 STB DVI/HDMI

  22. Subject • Picture • Sound • Connection • Information • Reception • Multimedia function

  23. A Typical Audio Specification Example • Sound Power • 20 W RMS • 40 W Music Power • 4 On Board Speakers • Separate Headphone • Audio line output • Optical SPDIF output • AC-3 in HDTV broadcasting • Dolby Virtual (surrounding process)

  24. Virtual Surrounding Process • Good sound can improve visual effect • An auxiliary selling point: • SRS • BBE • Virtual Dolby

  25. Some Real Surrounding Technology • Dolby Pro Logic • Dolby Digital • DTS • THX Surround EX / Dolby Digital EX

  26. Subject • Picture • Sound • Connection • Information • Reception • Multimedia function

  27. RF connections • NTSC (F-connector) • PAL/SECAM (IEC connector)

  28. Analog video connections • CVBS • S-video • YPbPr/YCbCr • SCART • EIA-J D • D1-D5 • D-sub  HD support: 480P/1080I/720P Japan D formats D1: 480I D2: 480P D3: 1080I D4: 720P D5: 1080P

  29. Digital video connections • DVI • DVI-I • DVI-D • DVI-A • HDCP (High-speed Data Content Protection) • 1394 • HDMI

  30. Audio connections • Baseband audio • RED: Right channel • WHITE: Left channel • Sub-woofer • Digital audio • Coaxial • Optical

  31. Standard Connections CVBS/S-video YPbPr CVBS/S-video YPbPr(HD)

  32. Subject • Picture • Sound • Connection • Information • Reception • Multimedia function

  33. Closed Caption • Allows the viewer to read TV program dialogue or voice conversations as on screen text

  34. V-chip • A program content advisory data • Respond to the advisory data by blocking content that the viewer finds objectionable • FCC approved a program rating system in March 1998 • All new TV sets (13 inches and larger) sold within US should have it by January 2000 CC/V-chip  For the US, Canada, and Brazil

  35. Teletext tele - text • It is a format to transmit data within a video signal • Data rate is a few MBit/s • Accepted global standard (WST) • Secure delivery data channel • Data error checking • Low cost • Uni-directional  From 1 page to 1,000 pages

  36. Teletext Pages

  37. Subject • Picture • Sound • Connection • Information • Reception • Multimedia function

  38. TV Color Systems 1. NTSC M NTSC-J NTSC 4.43 2. PAL I D B, B1, G, H N M Nc 3. SECAM D, K, K1, L B, G

  39. World TV Systems

  40. TV Channel Allocation VHF-L VHF-H UHF Japan North America

  41. Analog Stereo Sound • BTSC • North America, South America, Taiwan • EIA-J • Japan • Zweiton M • Korea • Zweiton (A2) • Germany Stereo Mono SAP

  42. Digital Stereo Sound NICAM • Near Instantaneous Companded Audio Multiplexer • First digital audio transmission • Near CD quality  for Europe, China, South-east Asia

  43. Various Models by Region

  44. Digital TV Digitize the transmission to have user get: • High quality AV • No noise, high definition, real surrounding • More program access • Hundreds of program in same spectrum • Information service • EPG: Electronic Program Guide • PPV: Pay Per View • Broadband Internet access • On-line shopping

  45. World DTV Systems Pulled by Multi-channel service Pushed by FCC Pulled by HDTV Pulled by HDTV

  46. Subject • Picture • Sound • Connection • Information • Reception • Multimedia function

  47. VGA Timing Modes StandardResolutionRefresh-rate VGA 640 x 480 60/75 Hz SVGA 800 x 600 60/75 Hz XGA 1024 x 768 60/75 Hz WXGA 1280 x 768 60/75 Hz WXGA 1280 x 720 60/75 Hz

  48. Add-on Features • Card reader 6-in-1, show the content from DSC media • Hard disc Video recording • Wireless Any room, any place

  49. 硬體設計 類比及數位電路設計 數位系統與微算機設計 通信系統理論 電磁波原理 數位信號處理 電視學 系統設計 液晶顯像原理 色彩學與光學量測 類比與數位電視系統 系統架構分析與整合 軟體設計 微算機程式 演算法 計算機組織 即時作業系統 軟體工程 電視學 LCD TV電子設計所需的基本功夫

  50. Thank You!

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