《HDMI英文演示》教学课件

1、David Yao, Senior Sales Director, Silicon Image, Inc.Vincent Hsia, Senior FAE Manager, Silicon Image, Inc.Implementing NewHDMI 1.3 Features第1页，共29页。Specification released in June 2006Developed to meet evolving needs of the high-definitionmarketplaceBandwidth more than doubled from 165 MHz (4.95 Gbps

2、) to340 MHz (10.2 Gbps) to support Higher Resolution, FasterRefresh, and Deep ColorExtended color gamut for more natural and realistic colorSupport for lossless digital audioNew HDMI 1.3 Features OverviewLip sync timing compensationMini connector for cameras and camcordersInitialSpec1.32MoreBandwidt

3、h510Gb/sDeep Color2448 bitxvYCCWider ColorGamutDolby True HDDTS-HDLip SyncMini Connector第2页，共29页。35mmFilmEye3Human1 Mpixel10 Mpixel100 Mpixel1080pHDTVCinemaDisplay720pHDTV480pEDTVCompactDigital StillCameraDigital SLRCell PhoneCameraDigitalCinema 4KVCRSensor/RecorderDisplay0.1 MpixelHDMI HDMI1.21.0 1

4、.3Greater Bandwidth forHigher Resolution1440p/WQXGAApple第3页，共29页。4Smoother Motion Motion blur often occurs in LCDdisplays with 60Hz refresh rates LCD refresh rates increasing to120HzFaster Response Time For Gamers, response time is thedifference between life anddeath Faster refresh rate means faster

5、response time means living tofight another day!Greater Bandwidth forFaster Refresh第4页，共29页。Codinrb5 Billions of colorsEliminates artifacts that appear as bands orcontours Most noticeable in subtle gradations and tonaltransitionsIncreases contrast ratios for sharper images &greater detailMore accurat

6、ely represents original material Deeper color palette produces video more likeoriginal film Live events look more naturalSimplified example of tonal transitions with limited color paletteSimplified example of tonal transitions with extended color paletteCurrent world: limited to 24 bits/ pixel color

7、 16 million colorsNot good enough for todays displaysDeep Color allows 24, 30, 36 and 48 bits/pixelcolor depthSimulated low-bit color depthSimulated high-bit color depthloangGreater Bandwidth forDeep Color第5页，共29页。6Takes full advantageof color renderingcapabilities ofmodern digitaldisplays vs. older

8、 CRTtechnologyxvYCC Extended Color Gamut forRealistic and Natural ColorxvYCC is the nextgeneration HD colorspace standard IEC 619966-2-4vs. older ITUBT.709-5A collaborationbetween majorConsumer ElectronicsmanufacturerssRGBxvYCC第6页，共29页。7Maximum Audio PerformanceHDMI 1.3 adds support for Dolby TrueHD

9、& DTS-HD Master Audio formats Approved audio formats for Blu-ray &HD-DVD Lossless audio formats offer digitalsurround sound with same fidelity as thesound stage and movie theaterLossless Audio for a TrueDigital Cinema Experience第7页，共29页。8Advanced video processing in todays HDTVs sometimesintroduces

10、a delay in video output relative to audio output Results in loss of “lip sync” Distracts from viewing experienceHDMI 1.3 allows CE devices to automatically compensatefor such timing differences Results in synchronized audio and video Much more enjoyable viewing experienceAutomatic Lip SyncTiming Com

11、pensation第8页，共29页。9STBAVRScreenVideoProcessorWithout Lip Sync Compensation1. Signal delivered to AVR2. AVR delivers audio to speakers and video to HDTV3. Speakers present audio while HDTV still processing video4. HDTV presents video out of sync with audioHDTV第9页，共29页。10STBAVRScreenVideoProcessorWith

12、 Lip Sync Compensation1. HDTV communicates video processing delay via HDMI 1.32. Signal delivered to AVR3.AVR delays audio to speakers to allow for video processing4. Video and audio presented in syncHDTV第10页，共29页。11Thinner, shorter, narrowerCompatible with existing Type AconnectorPlug is slightly s

13、maller but Chassisreceptacle is much smallerRequested by Camcorder andDigital Still Camera makersRegular and Mini ConnectorsType-C Mini-Connector第11页，共29页。5 meters10 metersCable Equalization Theory2) Receivers can compensatefor that filter by applying anequal but opposite filter1) Cables are just a

14、big filter2 meters3) Different lengths changeslope of attenuation receiver can targetparticular cable length14第12页，共29页。15Reference Cable EqualizerHDMI 1.3 measures Cat2cable output afterapplying an ideal“Reference CableEqualizer”This assumes thatreceivers will supportsuch cable, soHDMI 1.3 measures

15、receiver performanceagainst this same spec第13页，共29页。16Greater Bandwidth How?Source TerminationSerial transmission line basics Changes in impedance are bad Cause reflections back to the source of the signal Connectors frequently have impedancemismatches and cause some reflection High-impedance source

16、 will then bounce thatreflection back down the linebad signal quality第14页，共29页。17Potential ProblemHDMI CableSignal transmitted from driverPartial reflection back from connectorHigh-impedance source causes additional reflection第15页，共29页。18Source TerminationHDMI CablePartial reflection back from conne

17、ctorSignal transmitted from driverTerminated source swallows reflection第16页，共29页。19Source Termination Typical CableWithout source terminationWith source termination第17页，共29页。20Source Termination Worst-Case CableCable with high-impedance circuitry at input endcauses large reflection/degradation:But s

18、ource termination cleans up第18页，共29页。21Source Termination Spec ChangesPrevious HDMI Spec 1.2a and earlier hadrestrictions on Vh and VlHDMI Spec 1.3 reduces those restrictions whenconnected to 165MHz-capable sink第19页，共29页。22Greater Bandwidth How?Source Pre-EmphasisSource can use “Pre-emphasis” to imp

19、rove performance athigher speeds and longer cablesHDMI spec 1.2a and earlier had restrictions on Overshootthat prevented use of pre-emphasis1.3 removes those restrictions+1-10第20页，共29页。23Deep ColorHDMI 1.0-1.2a: 24 bits/pixelHDMI 1.3: 30-bit, 36-bit and 48-bit (10-, 12-, 16-bits/component) RGB 4:4:4

20、 and YCbCr 4:4:4第21页，共29页。24Deep Color Basic MechanismIncrease link clock and pack fatter pixels into more clocks 4 pixels into 5 clocks (for 30 bits/pixel) 2 pixels into 3 clocks (for 36 bits/pixel) 1 pixel into 2 clocks (for 48 bits/pixel)Primary Effects: Increased pixel clock rate (beyond 165MHz)

21、 New pixel packing definition and phase (includes all video-relatedsignaling: HSYNC, VSYNC) EDID indication (“upstream”) of Deep Color support GCP indication (“downstream”) of Deep Color mode and phaseNon-Effects: No change to HDCP No change to Data Islands, CTL periods (except for HSYNC, VSYNCindic

22、ation) No change to video timings第22页，共29页。TMDSChannelB0G0R0B1G1R1B2G2R2B3G3R3012Current 24-bit PackingPixel 0Pixel 1Pixel 2Pixel 3Time25第23页，共29页。B0B0B1B1G0G0G1G1R0R0R1R1B2B2B3B3G2G2G3G3R2R2R3R3TMDS36-bit Packing : 2 pixels/3 clocksPixel 0Pxl 0/1Pixel 1Pxl 2/3Channel012Time26Pixel 3Pixel 2第24页，共29页

23、。27xvYCC Color Gamut Metadata PacketxvYCC allows a much broader selection of colorsthan display devices can typically handleDisplays need to know how best to map “inputgamut” onto “display gamut” Otherwise image may look “cartoony”This requires knowledge of the input gamutGamut Metadata Packet carri

24、es this information第25页，共29页。28New Cable CategoriesHDMI 1.2a and earlier Cables could be individually rated for higher speeds and“eye” test methods scaled to frequency Required all cables to support HDTV rates (74.25MHz). Problem: End-user and vendor confusion, false claims,insufficient testing, etc

25、.HDMI 1.3 Defined Two Cable Categories Category 1: 74.25 MHz (2.23 Gbps) Sufficient to carry HDTV meets 99% of market need todaybut insufficient for 1080p 60Hz. Category 2: All supported HDMI rates 27MHz 340MHz (10.2Gbps) And beyond第26页，共29页。29Automatic Lipsync Timing CompensationLipsync Info from Sink Sink EDID specifies: Video Latency (one indication for Interlaced and one forProgressiv