video encoding system3.docx

video encoding system3.docx

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videoencodingsystem3

（53of17413）

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UnitedStatesPatentApplication20110219258

KindCodeA1

Cooper;PaulR.;etal.September8,2011

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ContentInterruptions

Abstract

Techniquesthataddresscontentinterruptionsaredescribed.Inanimplementation,aninterruptionisdetectedattheclientdeviceinreceiptofastreamofcontentfromadistributionsystemthatistoberecordedlocallyinmemoryattheclientdevice.Astreamofcontentisgeneratedattheclientdeviceandthegeneratedstreamofcontentisrecordedtofilltheinterruptioninthestreamofcontentfromthedistributionsysteminthememoryoftheclientdevice.

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Inventors:

Cooper;PaulR.;（SanJose,CA）;VanderStaay;MattHenry;（SanJose,CA）;Williams;ChadMichael;（SanMateo,CA）

Assignee:

MICROSOFTCORPORATION

Redmond

WA

SerialNo.:

717697

SeriesCode:

12

Filed:

March4,2010

CurrentU.S.Class:

714/2;709/231;714/48;714/E11.023;714/E11.025

ClassatPublication:

714/2;709/231;714/48;714/E11.023;714/E11.025

InternationalClass:

G06F15/1620060101G06F015/16;G06F11/0720060101G06F011/07

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Claims

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1.Amethodimplementedbyoneormoremodulesofaclientdevice,themethodcomprising:

detectinganinterruptionattheclientdeviceduringreceiptofastreamofcontentfromadistributionsystemthatistoberecordedlocallyinmemoryattheclientdevice;generatingastreamofcontentattheclientdevice;andrecordingthegeneratedstreamofcontenttofilltheinterruptioninthestreamofcontentfromthedistributionsysteminthememoryoftheclientdevice.

2.Amethodasdescribedinclaim1,whereintherecordingofthegeneratedstreamofcontentisperformedinconjunctionwiththestreamofcontentfromthedistributionsystemtoformanuninterruptedstreamofcontentrecordedtothememoryoftheclientdevice.

3.Amethodasdescribedinclaim2,whereintheuninterruptedstreamofcontentisconfiguredinaccordancewithoneormoreMPEG2transportstreamprotocols.

4.Amethodasdescribedinclaim1,whereinthegeneratingutilizescontentthatispre-cachedinthememoryoftheclientdevice.

5.Amethodasdescribedinclaim1,whereinthegeneratingincludesgeneratingPAT/PMTvaluesforthegeneratedstreamofcontentattheclientdevice.

6.Amethodasdescribedinclaim1,whereinthegeneratingincludesgeneratingprogramclockreference（PCR）valuesforthegeneratedstreamofcontentattheclientdevice.

7.Amethodasdescribedinclaim1,furthercomprisinginsertingaflagtoindicatethattherecordationofthecontentstreamedfromthedistributionsystemincludesaninterruption.

8.Amethodasdescribedinclaim7,whereintheflagisconfiguredtocauseoutputofanotificationofexistenceoftheinterruptionatanapproximatebeginningofanoutputofthecontent.

9.Amethodasdescribedinclaim8,whereinthenotificationincludesanoptiontodeletetherecordation.

10.Amethodasdescribedinclaim8,whereinthenotificationdescribesanamountoftimeoftheinterruptionoccurredorwhereintherecordationofthecontentfromthedistributionsystemtheinterruptionislocated.

11.Amethodasdescribedinclaim1,whereinthegeneratedstreamofcontentincludesanerrormessage.

12.Amethodasdescribedinclaim11,whereintheerrormessagedescribesalikelycauseoftheinterruption.

13.Aclientdevicecomprisingoneormoremodulesimplementedatleastinpartbyhardwareandconfiguredto:

identifyanerrorconditionthatexistswithrespecttoreceptionofastreamofcontentfromadistributionsystemattheclientdevice;selectfromcontentthatisstoredlocallyattheclientdevicethatcorrespondstotheidentifiederrorcondition;andstreamtheselectedcontentinplaceofthestreamofcontentfromthedistributionsystemuntiltheerrorconditionisresolved.

14.Aclientdeviceasdescribedinclaim13,whereintheerrorconditionincludesaninterruptioninreceptionofthestreamofcontentfromthedistributionsystemattheclientdevice.

15.Aclientdeviceasdescribedinclaim13,furthercomprisingconfiguringoneormoreprogramclockreference（PCR）valuesintheselectedcontenttobuildanaudio/visualtimelinethatiscompatiblewithatimelineofthestreamofcontentfromthedistributionsystem.

16.Oneormorecomputer-readablemediacomprisinginstructionsthatarestoredthereonthat,responsivetoexecutionbyaclientdevice,causetheclientdevicetoperformoperationscomprising:

responsivetoarequesttooutputcontentthatwasrecordedlocallyattheclientdevice,determiningthataninterruptionoccurredinthestreamingofthecontenttotheclientdevice;andoutputtinganotificationoftheexistenceoftheinterruptionintherecordingofthecontent.

17.Oneormorecomputer-readablemediaasdescribedinclaim16,whereinthedeterminingisperformedbydetectingaflaginthecontent.

18.Oneormorecomputer-readablemediaasdescribedinclaim16,whereinthestreamingisperformedfromadistributionsystemthatisremotetotheclientdeviceandassessableviaanetwork.

19.Oneormorecomputer-readablemediaasdescribedinclaim16,whereintheoutputtingofthenotificationisperformedbeforeoutputtingthecontent.

20.Oneormorecomputer-readablemediaasdescribedinclaim16,whereinthenotificationdescribesalikelycauseoftheinterruptionandanamountoftimeconsumedbytheinterruption.

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Description

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BACKGROUND

[0001]Contentmaybeobtainedfromavarietyofdifferentsourcesforrecordingbyaclientdevice.Forexample,theclientdevicemaybeconfiguredasadigitalvideorecordertorecordtelevisioncontentforlaterviewing,thereby"timeshifting"aviewingofthecontent.Whenobtainingthiscontentviaanetworkconnection,however,theremaybeinstancesinwhichthenetworkconnectionisunreliable.

[0002]Thisunreliabilitymayhaveanumberofundesirableconsequences,suchasresultingindegradedandevenmissingportionsofthecontentthatwascommunicatedviatheconnection.Additionally,thisunreliabilitymayevencausetraditionaltechniquesthatwereusedtorecordthecontenttofail.Forexample,thetraditionaltechniquesmaystoprecordingaltogether,therebyresultinginalimitedrecordingofaninitialportionofthecontent,ifatall.Inanotherexample,thetraditionaltechniquesmayresultinafracturedrecordingofthecontent,whichresultedinrecordationofthecontentasmultipleseparatepotionsthatweredividedbytheinterruptions.

SUMMARY

[0003]Techniquesthataddresscontentinterruptionsaredescribed.Inanimplementation,aninterruptionisdetectedattheclientdeviceinreceiptofastreamofcontentfromadistributionsystemthatistoberecordedlocallyinmemoryattheclientdevice.Astreamofcontentisgeneratedattheclientdeviceandthegeneratedstreamofcontentisrecordedtofilltheinterruptioninthestreamofcontentfromthedistributionsysteminthememoryoftheclientdevice.

[0004]Inanimplementation,aclientdevicecomprisesoneormoremodulesimplementedatleastinpartbyhardwareandconfiguredtoidentifyanerrorconditionthatexistswithrespecttoreceptionofastreamofcontentfromadistributionsystemattheclientdevice.Theoneormoremodulesarealsoconfiguredtoselectfromcontentthatisstoredlocallyattheclientdevicethatcorrespondstotheidentifiederrorconditionandstreamtheselectedcontentinplaceofthestreamofcontentfromthedistributionsystemuntiltheerrorconditionisresolved.

[0005]Inanimplementation,oneormorecomputer-readablemediacompriseinstructionsthatarestoredthereonthat,responsivetoexecutionbyaclientdevice,causetheclientdevicetoperformoperationsthatincluderesponsivetoarequesttooutputcontentthatwasrecordedlocallyattheclientdevice,determinethataninterruptionoccurredinthestreamingofthecontenttotheclientdevice;andoutputanotificationoftheexistenceoftheinterruptionintherecordingofthecontent.

[0006]ThisSummaryisprovidedtointroduceaselectionofconceptsinasimplifiedformthatarefurtherdescribedbelowintheDetailedDescription.ThisSummaryisnotintendedtoidentifykeyfeaturesoressentialfeaturesoftheclaimedsubjectmatter,norisitintendedtobeusedasanaidindeterminingthescopeoftheclaimedsubjectmatter.

BRIEFDESCRIPTIONOFTHEDRAWINGS

[0007]Thedetaileddescriptionisdescribedwithreferencetotheaccompanyingfigures.Inthefigures,theleft-mostdigit（s）ofareferencenumberidentifiesthefigureinwhichthereferencenumberfirstappears.Theuseofthesamereferencenumbersindifferentinstancesinthedescriptionandthefiguresmayindicatesimilaroridenticalitems.

[0008]FIG.1isanillustrationofanenvironmentinanexampleimplementationthatisoperabletoemploytechniquesthataddresscontentinterruptions.

[0009]FIG.2isanillustrationofanexamplesystemshowingadistributionsystemandaclientdeviceofFIG.1ingreaterdetailasaddressinganinterruptioninreceptionofastreamofcontent.

[0010]FIG.3isaflowdiagramdepictingap