【英文标准名称】:Informationtechnology-DataInterchangeon130mmRewritableandWriteOnceReadManyUltraDensityOptical(UDO)DiskCartridges-Capacity:30GbytesperCartridge-FirstGeneration
【原文标准名称】:信息技术.130mm可重写和一次写入的超密度光盘(UDO)盒带的信息交换.容量:每盒30Gbytes.第一代
【标准号】:ISO/IEC17345-2006
【标准状态】:现行
【国别】:国际
【发布日期】:2006-12
【实施或试行日期】:
【发布单位】:国际标准化组织(ISO)
【起草单位】:ISO/IECJTC1/SC23
【标准类型】:()
【标准水平】:()
【中文主题词】:数据交换;数据媒体;数据介质;数据处理;数据存储;定义;电子数据处理;信息交换;信息处理;信息技术;光盘;特性;规范(验收);存储体;写一次读多次(WriteOnceReadMany)
【英文主题词】:Dataexchange;Datamedia;Dataprocessing;Datastorage;Definition;Definitions;EDP;Informationinterchange;Informationprocessing;Informationtechnology;Opticaldisks;Properties;Specification(approval);Storagetarget;WORM
【摘要】:ThisInternationalStandardspecifiesthemechanical,physical,andopticalcharacteristicsofa130mmopticaldiskcartridge(ODC)thatemploysthermo-opticalPhaseChangeeffectstoenabledatainterchangebetweensuchdisks.ThisInternationalStandardspecifiestwotypes:-TypeRW(Rewritable)providesfordatatobewrittenreadanderasedmanytimesovertherecordingsurfacesofthedisk.-TypeWORM(WriteOnceReadMany)providesfordataoncewrittentobereadamultiplicityoftimes.ThistypeusesaWriteOnceReadManytimesrecordingmaterial(writtenmarkscannotbeerasedandattemptedmodificationsofthewrittenmarksaredetectable).Multisession(incrementalwriteoperations)recordingmaybeperformedonTypeWORMdisks.Thediskistwo-sidedwithanominalcapacityof15,0Gbytespersideandthecartridge(twosides)providesanominalcapacityof30,0Gbytes.ThisInternationalStandardspecifies:-theconditionsforconformancetestingandtheReferenceDrive;-theenvironmentsinwhichthecartridgesaretobeoperatedandstored;-themechanical,physicalanddimensionalcharacteristicsofthecartridgesoastoprovidemechanicalinterchangeabilitybetweendataprocessingsystems;-theformatoftheinformationonthedisk,bothembossedanduser-written,includingthephysicaldispositionofthetracksandsectors,theerrorcorrectioncodes,themodulationmethodsused;-thecharacteristicsoftheembossedinformationonthedisk;-thethermo-opticalcharacteristicsofthedisk,enablingprocessingsystemstowritedataontothedisk;and-theminimumqualityofuser-writtendataonthedisk,enablingdataprocessingsystemstoreaddatafromthedisk.ThisInternationalStandardprovidesforinterchangebetweenopticaldiskdrives.Togetherwithastandardforvolumeandfilestructure,itprovidesforfulldatainterchangebetweendataprocessingsystems.
【中国标准分类号】:L64
【国际标准分类号】:35_220_30
【页数】:164P;A4
【正文语种】:英语


【英文标准名称】:DimensionsofgasketsforflangestoBS4504.Specificationforspiralwoundgasketsforusewithsteelflanges
【原文标准名称】:BS4504管法兰用衬垫尺寸.第2部分:钢法兰用螺旋形绕制衬垫规范圈尺寸
【标准号】:BS4865Pt.2-1989
【标准状态】:作废
【国别】:
【发布日期】:
【实施或试行日期】:
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:
【中国标准分类号】:
【国际标准分类号】:
【页数】:
【正文语种】: