(plasma) (rear projection) – (lcd) lcd tv subject 1.picture 2.sound 3.connection 4.information...
TRANSCRIPT
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平面顯示器電子系統設計技術要項
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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
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Subject
1. Picture2. Sound3. Connection4. Information5. Reception6. Multimedia function
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Picture Quality Factors
• Brightness• Contrast• Color• Sharpness• Viewing Angle• Response Time• Uniformity• Jaggy• Jerky
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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
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Brightness
More backlight
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Contrast
Whiter and blacker
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Gamma Correction
The detail of black and white field
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Color - cross color Cross-color
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Color – flesh tone correction
Too healthy
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Color – white balance & color temperature
Black Body Locus
5300K6500K9300K
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Color Temperature
NormalWarm Cool
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Sharpness
More clear edge
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Viewing AngleGood
Bad Lower contrast, color
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Response Time
Tailing
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UniformityMura
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Jaggy
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Jerky – 3:2 pull-down
Film modeVideo mode
Artifact
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Jerky – motion blur
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Panel Technology: IPS vs MVA
IPS (In plane switch)
MVA(Multi-domain vertical
alignment)
View angel Excellent Good
Response time Acceptable Acceptable
Contrast Good Good
Brightness OK OK
Quality control Hard to control OK
Yield Low High
Cost High Low
Technology Owner
Hitachi Fujitsu
User Hitachi, LG Phillip Samsung, Sharp, CMO, AUO
Source: JPMorgan estimates, December 2003
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POSTENHANCE.
POSTENHANCE.
PQ Decision Weighting in LCD TV
TUNERTUNER
IFIF
LUMA/CHROMA
SEP
LUMA/CHROMA
SEP
SYNC SEP
SYNC SEP
CHROMA PROC
CHROMA PROC
LUMAPROC
LUMAPROC
SCALERSCALER
AUDIOPROC
AUDIOPROC
CONTROLCONTROL
DATAPROC
DATAPROC
RF
IF
CVBS
SIF
CS
HS/VS
YUV
RGB
IR/KBD
De-int.De-int.
CVBS
S
YPbPr
SCART
PC VGA/DVI1394
STB DVI/HDMI
LCD panel
480i/576i480p/576p
1080i720p
NTSCPAL
SECAM
STEREODECODER
STEREODECODER
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Subject
1. Picture2. Sound3. Connection4. Information5. Reception6. Multimedia function
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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)
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Virtual Surrounding Process
• Good sound can improve visual effect
• An auxiliary selling point:– SRS– BBE– Virtual Dolby
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Some Real Surrounding Technology• Dolby Pro Logic
• Dolby Digital
• DTS
• THX Surround EX / Dolby Digital EX
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Subject
1. Picture2. Sound3. Connection4. Information5. Reception6. Multimedia function
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RF connections
• NTSC (F-connector)
• PAL/SECAM (IEC connector)
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Analog video connections
• CVBS
• S-video
• YPbPr/YCbCr
• SCART
• EIA-J D– D1-D5
• D-sub
HD support: 480P/1080I/720P
Japan D formatsD1: 480ID2: 480PD3: 1080ID4: 720PD5: 1080P
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Digital video connections
• DVI– DVI-I– DVI-D– DVI-A– HDCP (High-speed Data Content Protection)
• 1394
• HDMI
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Audio connections
• Baseband audio– RED: Right channel– WHITE: Left channel
• Sub-woofer
• Digital audio– Coaxial– Optical
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Standard Connections
CVBS/S-video
YPbPr
YPbPr(HD) CVBS/S-video
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Subject
1. Picture2. Sound3. Connection4. Information5. Reception6. Multimedia function
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Closed Caption
• Allows the viewer to read TV program dialogue or voice conversations as on screen text
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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
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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
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Teletext Pages
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Subject
1. Picture2. Sound3. Connection4. Information5. Reception6. Multimedia function
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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
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World TV Systems
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TV Channel Allocation
North America Japan
UHF
VHF-L
VHF-H
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Analog Stereo Sound
• BTSC– North America, South America,
Taiwan• EIA-J
– Japan• Zweiton M
– Korea• Zweiton (A2)
– Germany
Stereo
Mono
SAP
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Digital Stereo Sound
NICAM• Near Instantaneous Companded
Audio Multiplexer• First digital audio transmission• Near CD quality
for Europe, China, South-east Asia
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Various Models by Region
PAL NTSC
EU AP China NA Japan Korea TW SA
Tuner PALSECAM
PALNTSC
PAL(CN-
multi.)
NTSC NTSC-J NTSC NTSC NTSC
Stereo
NICAMA2
NICAMA2
NICAM MTS EIA-J A2-M MTS MTS
I/O SCARTS/CVBS(YPbPr
)
S/CVBSYPbPr
S/CVBSYPbPr
S/CVBSYPbPr
S/CVBSD-conn.
S/CVBSYPbPr
S/CVBSYPbPr
S/CVBSYPbPr
Teletext
YES YES - - - - - -
CC/V-chip - - - YES - - - YES
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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
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World DTV Systems
Pushed by FCCPulled by HDTVPulled by
HDTV
Pulled byMulti-channel service
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Subject
1. Picture2. Sound3. Connection4. Information5. Reception6. Multimedia function
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VGA Timing Modes
Standard Resolution Refresh-rateVGA 640 x 480 60/75 HzSVGA 800 x 600 60/75 HzXGA 1024 x 768 60/75 HzWXGA 1280 x 768 60/75 HzWXGA 1280 x 720 60/75 Hz
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Add-on Features
• Card reader6-in-1, show the content from DSC media
• Hard discVideo recording
• WirelessAny room, any place
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LCD TV電子設計所需的基本功夫硬體設計• 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
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Thank You!