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时间: 2019-12-24 18:55
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【应用笔记】AN569:串行数字接口(SDI)惯性同步视频解码器参考设计(SDIFlywheelVideoDecoderReferenceDesign)本应用笔记描述了基于当前AlteraSDIMegaCore功能模块的串行数字接口(SDI)惯性同步视频解码器参考设计。ThisapplicationnotedescribestheSerialDigitalInterface(SDI)FlywheelVideoDecoderreferencedesignbasedonthecurrentAltera®SDIMegaCore®function.TheSDIflywheelvideodecoderisusedinvideoprocessorstohandlerealvideosignalstreamingwithoutnoiseorinterruptions.TheSDIflywheelvideodecodersynchronizesitsinternally-generatedvideotimingtotheincomingvideostream,andprovidesthehorizontalandverticaltimingstotheotherblocksinthevideoprocessor.Aftersynchronizing,theSDIflywheelvideodecodercontinuouslycomparesitsinternaltiminginformationwiththeinputvideostream.Wheneveradifferenceoccurs,theSDIflywheelvideodecoderdoesnotimmediatelyresynchronizewiththeinputvideostream,butinstead,continuestogeneratevideotiming.TheinternaltimingusuallyresumesinsyncwiththeSDIflywheelvideodecoderiftheinputvideostreamcontainsonlyafewcorrupteddatawords.Ifthevideostreamisswitchedtoadifferentsourceorstandardcausingthesynchronizationtogooff,theSDIflywheelvideodecoderresynchronizeswiththeincomingvideostream.AN569:SDIFlywheelVideoDecoderReferenceDesignMay2009AN-569-1.0IntroductionThisapplicationnotedescribestheSerialDigitalInterface(SDI)FlywheelVideoDecoderreferencedesignbasedonthecurrentAlteraSDIMegaCorefunction.TheSDIflywheelvideodecoderisusedinvideoprocessorstohandlerealvideosignalstreamingwithoutnoiseorinterruptions.TheSDIflywheelvideodecodersynchronizesitsinternally-generatedvideotimingtotheincomingvideostream,andprovidesth……