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ID:36460512
大小:2.14 MB
页数:75页
时间:2019-05-10
《HDMI接口在DVD系统中的实现及应用》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、西北工业大学硕士学位论文HDMI接口在DVD系统中的实现及应用姓名:钟媛申请学位级别:硕士专业:计算机软件与理论指导教师:何华灿20060301r『L『业人掌帕r}化沦史HDM!接【1^DVD系统中的t州发f、i川ABSTRACTHDTViscomingtOeverybody’Shouse,whichwillcausearevolutionnamed。‘digitalhome”.ThespecificationfortheinterfacetotheHDTVisanimportantpartofthewholes
2、pecificationforHDTV.Attheendof2002,theHDMlSpecificationVersion1.0released.HDMIistheonlytransmissioninterfacethatCansenduncompresseddigitalaudioandvideostreambysingleline.ItisnecessaryforthedevelopmentoftheDVDplayertointroducetheHDMItechniquetotheDVDplayerasth
3、einterfaceofthedigitalmediatransmission.ZORANCo.willreleaseaDVDreferencedesignwiththeHDMIinterface,Vaddis@778.ItusestheDVDdecoderchipZR36778andHDXtremechipZR36721.1wasfortunatetoparticipateinthisprojectaddingaSWmoduletosupportHDMItransmission,includingEDIDrea
4、dingandHDCPencryption,basedontheZORANDVDplayerreferencedesignandthespecificationofZR36721.ThisthesisiSbasedonmyWOrkinZORANCo..First.wein廿oducetheHDMIspecificationandcompareitwiththeDVI,andthendiscussethewholeprocessofdesignwhichaddsanewSWmoduleontheZORANDVDpl
5、ayerreferencedesigntosupportHDMI.Atthelast,weanalyzetheresolutionlimitationofDVDandthereasonwhywehaveHD-JPEG.WediscussethedisplayprocessofHD-JPEGandimprovetheDCTdecoderarithmetictodecreasetheJPEGdecodingtime.ThenewarithmeticiscalledPPRT(PerfectPrecisionRelaxT
6、ransform).Itusesdisplacementoperationtodothepictureencodeinganddecodinginsteadofthemultiplicationoperation.ThismethodCanimprovetheJPEGdecodeingtimeandensurethedistortionofthepictureiSintherangethatCanbeallowed.ThisSWmoduleisusedintheZORANDVDplayerwithHDMIrefe
7、rencedesign,whichreleasedin2005.Andthecustomers,likeTOSHIBA,Samsung,alreadymassproductedtheHD-DVDmodelswiththisfeature.KeyWordsHDTV,HDMI,HDCP,HD—JPEG,PPRT铺带绪论第一章绪论1.1课题研究背景【t-6】1.1.1HDMI的出现背景随着生活的数字化,大家似乎已经对“家庭影院”这个名词不再陌生,追求着具有真实音频、视频效果的高品质视听效果。因此,这两年不断出现了满足大
8、家需求的数字电视、高清数字电视,即所谓的D'FV、HDTV。数字电视从演播室到发射、传输、接收过程中的所有环节都是使用数字电视信号,或对该系统所有的信号传播都是通过由二进制数字所构成的数字流来完成的,高速的数据流传输速度保证了数字电视的高清晰度,克服了模拟电视的先天不足。高清晰数字电视的接口技术标准是整个商清晰数字电视标准的重要部分。随着各种数字显示终端的日益普及,人们推
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