【英文标准名称】:Shipborneequipment--Reliabilityassessmentcriteria
【原文标准名称】:船载设备.可靠性评定标准
【标准号】:JISF0810-1997
【标准状态】:现行
【国别】:日本
【发布日期】:1997-04-21
【实施或试行日期】:
【发布单位】:日本工业标准调查会(JP-JISC)
【起草单位】:TechnicalCommitteeonShips
【标准类型】:()
【标准水平】:()
【中文主题词】:可靠度;船舶;航行信令装置;航海仪器;雷达
【英文主题词】:marineinstruments;;radar;reliability
【摘要】:この規格は,船用機器の基準使用条件の下における性能維持及び保全の指標とするための機器の信頼性評価基準について規定する。
【中国标准分类号】:U04
【国际标准分类号】:47_020_01
【页数】:12P;A4
【正文语种】:日语


【英文标准名称】:Informationtechnology-Codingofaudio-visualobjects-Part20:LightweightApplicationSceneRepresentation(LASeR)andSimpleAggregationFormat(SAF)
【原文标准名称】:信息技术.音视对象的编码.第20部分:轻型应用像幅表示法(LASeR)和简单聚合形式(SAF)
【标准号】:ISO/IEC14496-20-2006
【标准状态】:作废
【国别】:国际
【发布日期】:2006-06
【实施或试行日期】:
【发布单位】:国际标准化组织(IX-ISO)
【起草单位】:ISO/IECJTC1/SC29
【标准类型】:()
【标准水平】:()
【中文主题词】:视听;视听资料;传播技术;数据格式;数据传送;定义;编码;信息技术;交互式;多媒体;多路传送
【英文主题词】:Audiovisual;Audiovisualmaterials;Communicationtechnology;Dataformats;Datatransfer;Definition;Definitions;Encoding;Informationtechnology;Interactive;Multimedia;Multiplex
【摘要】:ThisInternationalStandarddefinesascenedescriptionformat(LASeR)andanaggregationformat(SAF)respectivelysuitableforrepresentinganddeliveringrich-mediaservicestoresource-constraineddevicessuchasmobilephones.LASeRaimsatfulfillingalltherequirementsofrich-mediaservicesatthescenedescriptionlevel.LASeRsupports:-anoptimizedsetofobjectsinheritedfromSVGtodescriberich-mediascenes;-asmallsetofkeycompatibleextensionsoverSVG;-theabilitytoencodeandtransmitaLASeRstreamandthenreconstructSVGcontent;-dynamicupdatingofthescenetoachieveareactive,smoothandcontinuousservice;-simpleyetefficientcompressiontoimprovedeliveryandparsingtimes,aswellasstoragesize,oneofthedesigngoalsbeingtoallowbothforadirectimplementationoftheSDLasdocumented,aswellasforadecodercompliantwithISO/IEC23001-1todecodetheLASeRbitstream;-anefficientinterfacewithaudioandvisualstreamswithframe-accuratesynchronization;-useofanyfontformat,includingtheOpenTypeindustrystandard;and-easyconversionfromotherpopularrich-mediaformatsinordertoleverageexistingcontentanddevelopercommunities.TechnologyselectioncriteriaforLASeRincludedcompressionefficiency,butalsocodeandmemoryfootprintandperformance.Otheraimsincluded:scalability,adaptabilitytotheusercontext,extensibilityoftheformat,abilitytodefinesmallprofiles,feasibilityofaJ2MEimplementation,errorresilienceandsafetyofimplementations.SAFaimsatfulfillingalltherequirementsofrich-mediaservicesattheinterfacebetweenmedia/scenedescriptionandexistingtransportprotocols:-simpleaggregationofanytypeofstream;-signalingofMPEGandnon-MPEGstreams;-optimizedpacketheadersforbandwidth-limitednetworks;-easymappingtopopularstreamingformats;-cachemanagementcapability;and-extensibility.SAFhasbeendesignedtocomplementLASeRforsimple,interactiveservices,bringing:-efficientanddynamicpackagingtocopewithhighlatencynetworks;-mediainterleaving;and-synchronizationsupportwithaverylowoverhead.ThisInternationalStandarddefinestheusageofSAFforLASeRcontent.However,LASeRcanbeusedindependentlyfromSAF.
【中国标准分类号】:L81
【国际标准分类号】:35_040
【页数】:
【正文语种】:英语