第二代數(shù)字錄像機存儲方案及相關關鍵技術的研究.pdf

1、天津大學碩士學位論文第二代數(shù)字錄像機存儲方案及相關關鍵技術的研究姓名：王旭申請學位級別：碩士專業(yè)：信號與信息處理指導教師：俞斯樂2002.1.1一盔!!查蘭堡!：蘭些堡苧：——AbstractTheoriginalDigitalVideecorderisadevicewhichreceivesanalogTVsignalanddigitizesandcompressesittostoryintheharddiskTheharddiski

2、sarandomaccessdeviceSODigitalVideoRecorderh∞thefunctionssuch∞time—shiftingsimultaneousplayback，viewablestoWmetionandforwardbackwardscanning，eteThesecondgenerationDigitalVideoRecorderwillincorporateallthefunctionsoftheⅣPC

3、andDVDPlayerusedforentertainmentandobtaininginformationTheessentialfunctionsincludedigitalrecording(digitalvideoandaudiosignalstoring)，timeshifting，connectionwithinternet，DVDdecoding(includingKaranke)，simpletextandgraphi

4、ceditingandtext／graphic／video／andiosearchenginebasedonthelocalharddiskThesecondgenerationDigitalVideeCOrderisacomplexembeddedrealtimesystemInorderteducethecomplexityofthesoftwareandshortenthedevelopingperiod，achoiceofaem

5、beddedRTOSisneededInthisthesis，afterthediscussionaboutthebasicconet：ptandfunctionofOStheconceptofR∞SisprovidedBasedontheintroductionoftheworldwidefamouscommercialembeddedOS3andLinuxOSforthedevelopedsystemarealtimeOSsolut

6、ionadoptingareformedrealtimeLinuxispresented刀ehardwaredesignandproductioninthisworkisapartofthewholesystemhardwaredevelopmentforsolvingthedatastoragechallengeAfterdetailedanalyzingthecharacteristicsoffiveharddiskinterfac

7、es，accordingtotherequirementsofthedatatransferrateandthereductionofCOsttheIDBminterfaceiSfinallychosenforconnectingthesystemtotheharddiskSothishardwareWOrkiStomakeaIDE，A1‘AcontrollerintheformofPCIcardusingthePCI649chipma

8、debyCMDcorporationInchapter4ofthethesis，severalaspectsinvolvedinprogrammingLinuxblockdevicedriverareintroducedItconcretelyanalyzesthemalndatastructureintheharddiskdriverandprovidestheDMAreadandwritecompletionoftheidedisk

9、driverAfterinterpretingtheprivateregistersofPCI649。thisthesistakesaconcretefunctioninthedrivermadebymyselfasanexampletoshowhowtomodifythegeneticidedriveridediskjntheLinuxsourcecodetoidentifyanddrivetheIDEcontrollermadeby