减少按键数量 电容感测器造就三星WiFi超薄手机（Reduce the number of keys, capacitive sensors make Samsung WiFi ultrathin mobile p.doc

减少按键数量 电容感测器造就三星WiFi超薄手机（Reduce the number of keys, capacitive sensors make Samsung WiFi ultrathin mobile p 减少按键数量电容感测器造就三星Wi-Fi超薄手机（Reduce thenumber of keys,capacitive sensorsmake SamsungWi-Fi ultra-thin mobile phones）减少按键数量电容感测器造就三星Wi-Fi超薄手机（Reduce thenumber ofkeys,capacitive sensorsmake SamsungWi-Fi ultra-thin mobile phones）This articleis contributedby mask5166Pdf documentsmay experiencepoor browsingon theWAP side.It isremended thatyou firstselect TXT,or downloadthe sourcefile tothe localview.Mobile OEMusers usuallyimplement productdifferentiation byadding featuresand capabilities.This is a goodthing,but thereare alsodisadvantages-too manyfeatures canmake mobilephones moredifficult to control.Synaptics hassimplified theuser interfaceand mademanipulation easier.In Samsungs SPH-V6800slide GSMcamera phone,which supportsWi-Fi,Synaptics usesa capacitive sensor tocontrol thesefunctions insteadof aseries ofmechanical keys.Another advantageof Synapticsscheme isused todesign amore slimand smoothto mobilephone.On the mobilephoneinterface,the termZero Dfor thenext One-D(basically isthrough someform ofsearch inclosed loop.Two-D ismore flexible,meaning cursorscan movearound.).Zero Dis thetechnology usedby mostmobile OEM,says ClarkFoy,vice presidentof marketingat Synaptics.These productstend to be easierto use,but willrequire moreadvanced designs.Synaptics hascreated aslim design,can replacefor selectionfunction inmost casesfour orfive tothe rockerbutton.Without thiscapacitive sensor,the SPH-V6800would bemuch thicker,and becauseof itsrich functionality,the phonewould notbe toothin.In additionto Wi-Fi anda1million300thousand pixelcamera,SPH-V6800has a2inch TFTdisplay screen,MP3/AAC audioplayback,voice recognition,MPEG-4recording,video ondemand,TV andEVDO etc.A classofkeyscalled MOD(Multimedia ondemand)has appearedin the MP3player.The typical3keys providepause/play,fast forwardand backwardfunctions,respectively.With theslim fashionhas beemainstream mobilephone design,the MODis embeddedin theouter hingeor dewin thelift covertype mobilephone,so theirsize mustbe verythin.In manycases,these keysare theonly partexposed tothe externalenvironment.In additionto drivingtheMP3function,when yousearch fora menustructure,the MODkey canalso be used asthe navigationkey(upper,lower,left,right).On SPH-V6800,the traditionaldigital keyboardstill retainsmechanical buttons,but allother controlsare doneby capacitivesensors.Find thelist ofsongs and the phonebook can be pletedin twoways:use thecheck keyon theside of themobilephone orthe up/down switch.Samsung mayhave plannedto usethe sensorto implementit,but decidednot to do so.The Synapticssensor prisesa flexiblecontact,a flexiblesensor mountedon themechanical keyboardkeys below,so theentire planecanbe used as a two-dimensional inputdomain,support games,Inter aess,data inputand otherfunctions.Although notimplemented inSPH-V6800,the displaydomain canbeusedasa sensor.At thebottom of the camera,asensorsensor(clear)provides directinput supportat thetop of the display.The advantagesof thisimplementation include:due tobe placedin theplastic below,so it can providehigher resolutiontouch performance,and getbetter protection;design canachieve better;and slightlybending ability of sensors,and resistancesensors arenot todo.Figure:Samsung SPH-V6800mobilephonecapacitivesensortocontrolcertain functions,replacing some ofthemechanical buttons.Multiple sleepmodes,one ofthe keyelements ofa mobilephone suessis tominimize thepower consumption.To thisend,Synaptics designersensure thepower economyof sensorIC ponents.It supportsseveral powermodes,including deepsleep(power consumptionof lessthan15A),a sleepmode withsupport wakeup(70micro),and sleepmode(100a).Samsung isvery strictwith itsquality.Only throughvery stringentquality certificationcan theprogram berecognized,Foy said.Samsungs modelis differentfrom theway it is developedand designed.Samsung doesa lot of paralleldesign,and thendecides what todo-what toretain,what toimprove andwhatto remove.Many otherOEM tendtobemore streamlinedat theplanning stage,they domore upfrontdesign work,and thenselect afew cellphones fordevelopment.The multimediaprocessing ofSPH-V6800is aomplishedby thehigh pass(Qualm)MSM6500chip groupwith EVDOfunctionality.6500provide a direct connectionwith QualmRF chipset,RF chipsetis partof QualmRadioOne architecture,RadioOne isadirectconversion wirelesstechnology,itispossible touse multi band and multi-mode RFdesign plexityminimization.From theperspective ofSPH-V6800imaging,the cameraprovides1million300thousand pixelresolution forstill imagesand motionvideo,it also has thefunction ofencoding anddecoding.The6500chipset providessufficient horsepowerand hardware aeleration,so thedesigner doesnot needa stand-alone applicationprocessor forvideo orgames.The multimediafeature,SPH-V6800was originallydesigned forthe Koreanmarket,and Koreanslike tohave alotofmultimedia contenton theirphones,says BrianRodriguez,senior productmanagement directorat QualmCDMA technologies.So,from amultimedia pointof view,The phoneran outof all6500chipset functions.To reducethe costofthesystem,he said,the integrationof allbaseband audio,video andimage features,and thespecial datacircuit,with aspecial ARMprocessor formultimedia anddata machineeven forsuch asimage,video,audio andother multimediaGPS orsomeofthe keyfunctions ofhardwareaelerationcharacteristics.As withQualms otherproducts,the6500chipset hasthe samegpsOne engine.It alsouses satellitesand worksto providefast andaurate locationservices forE911emergency calls.6500supports radiofrequency dualreceive architecture,thus providingthe abilityto providesimultaneous orindependent GPSservices.One ofSPH-V6800s biggestchallenges inengineering isthe thickness,says Rodriguez.SPH-V6800slim appearanceincreases theplexity ofRF andantenna subsystem,the interferencefree mobilephone moredifficult.The pressuretoremovean externalantenna isalso greater.But theabilityof6500chipset todeal withmultibandandmulti-mode makesthe wirelessplexity problemeased.Another keyponent ofthe SPH-V6800isa10channel busswitch forconnecting orinsulating aspecific path,the TIoftheSN74CBTLV3861DGVR.It isimplemented by16.4x5mm smallvolume DGVpackages.Aording toTI,the DGVpackage aountsfor lessthan35%of QSOPor TSSOP.The IDTalsohasthe same10channel busswitching element.However,the leakagecurren