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1、[公开号]:US6933862B2[专利名称]：POWERCONSUMPTIONSTABILIZATIONSYSTEMANDMETHOD[公开日]:Aug.23,2005[国际分类]:H03M7/00;H03K17/16[申请号]:10/684,992[申请日]:Oct.14,2003[发明人]：RobertM.R.Neff,PaloAlto,CA(US)[申请人]：AgilentTechnologies,Inc.,PaloAlto,CA(US)[优先权号]：US2005/0078016A1Apr.14,2005
2、[同族专利]：[发明摘要]：Asourcesignalisprovided.ThesourcesignalisXORedwithascramblingrandomsignaltogenerateascrambledsignal.Thescrambledsignalistransmittedthroughthedigitallogiccircuit.ThescrambledsignalisXORedwiththedescramblingrandomsignallogicallyidenticaltothescram
3、 blingrandomsignaltoproduceadescrambledsignaliden ticaltothesourcesignal.Inoneembodiment,thescramblingrandomsignalistransmittedthroughthedigitallogiccircuitandusedasthedescramblingrandomsignal.Inanotherembodiment,thescramblingrandomsignalanddescram blingrando
4、msignalaregeneratedindependentlyusingpseudo-randomnumbergenerators.Inyetanotherembodi ment,thescramblingrandomsignalisself-synchronizingandiscontainedwithinthepatternofthescrambledsignal.[发明领域（关键词）]：Thetechnicalfieldofthisdisclosureisdigitallogiccircuits,part
5、icularlydigitallogiccircuitshavingapowerconsumptionstabilizationsystemandmethodsofstabilizingpowerconsumption.[发明背景]：Powerconsumptioninmanydigitallogiccircuitsisafunctionofthenumberofsignallevelchangesoccurringinthecircuit.Thereislowpowerconsumptionwhensignal
6、levelsareconstantandhighpowerconsumptionwhenthesignallevelschangeoften.Forexample,transmittingthesequence10101010requirestwicethepowerof10001000andfourtimesthepowerof00001000foracircuitwherethepowerconsumptionisdependentonthefrequencyoftran sition.Inlargedigi
7、talchips,logiccircuitsmaybeclassifiedascontrolordataflowcircuits.Controlcircuitsdeterminewheredatagoesorwhatoperationwilloccur.Dataflowcircuitshandletheactualinformationbeingprocessed,suchasimplementingarithmeticoperations.Dataflowcircuitsalsopassdatathrought
8、hecircuitsfromonelocationtoanother,suchasfromaregisterfiletoamemoryunit.Dataflowcircuitpowerconsumptiondependsonthenumberoftransitionsinthedataasitpropagatesalongthedatapath.Thepowerconsu
