 direction of the vehicle, and the left and right blinker lamps of the headlight are disposed along the front cowl. As such, the left and right blinker lamps are located inside the lens portion of the headlight or the cowl portion around the headlight.
For this reason, when viewed at an angle from the front right side of the vehicle, the left blinker lamp is hidden from the lens or cowl portion, so that it is difficult to see the left blinker lamp. When viewed at an angle from the front left side of the vehicle, it is difficult to see the right blinker lamp. When the vehicle is viewed from the right or left side, it is more preferable if the opposite blinker lamp is also visible. This application relates generally to data processing and, more particularly, to programmable units for metadata processing.
Today's computer systems are notoriously hard to secure. Conventional processor architectures, for example, allow various behaviors, such as buffer overflows, pointer forging and the like, which violate higher level abstractions. Closing the gap between programming language and hardware may be left to software, where the cost of enforcing airtight abstractions is often deemed too high.
Some recent efforts have demonstrated the value of propagating metadata during execution to enforce policies that catch safety violations and malicious attacks as they occur. These policies can be enforced in software but typically incur high, undesirable overheads, such as in performance and/or costs, that discourage their deployment or other motivate coarse approximations providing less protection. Hardware support for fixed policies may reduce overhead to acceptable levels and prevent a large portion of undesired code violations, such as may be performed by malicious code or malware attacks. For example, Intel recently announced hardware for bounds checking and isolation. While these mitigate many of today's attacks, fully securing systems will require more than memory safety and isolation. Attacks rapidly evolve to exploit any remaining forms of vulnerability. 1. Technical Field
The present invention relates to a camera system, and particularly relates to a camera system capable of supporting autofocus control in recording of moving images, an interchangeable lens and a camera body constituting the camera system.
2. Related Art
JP4-280239A discloses an interchangeable lens type camera apparatus. A lens unit that is mounted to a camera body of this camera apparatus has a drive system that regulates automatic focus and controls automatic exposure. The lens unit has status information about the lens unit. This camera apparatus controls the lens unit from the camera body by communicating
direction of the vehicle, and the left and right winker lamp of the headlight are disposed along the front cowl. As such, the leftover and right winker lamps are located inside the lens share of the headlight or the hood portion around the headlight. 
 For this reason, when viewed at an angle from the front right english of the vehicle, the left winker lamp is hidden from the lens or cowl portion, so that it is difficult to see the left blinker lamp. When see at an angle from the front left english of the vehicle, it is difficult to see the right winker lamp. When the vehicle is view from the right or left side, it is more preferable if the diametric blinker lamp is also visible. This application relates generally to data processing and, more particularly, to programmable units for metadata processing. 
 Today's computer systems are notoriously hard to secure. Conventional processor architectures, for example, allow various behavior, such as buffer overflows, cursor invent and the like, which violate higher grade abstraction. Closing the gap between scheduling language and hardware may be left to software, where the cost of enforcing airtight abstractions is often deem too high. 
 Some recent efforts have demonstrated the value of propagating metadata during execution to enforce policy that catch safety violations and malicious attacks as they occur. These policy can be enforced in software but typically incur high, undesirable disk overhead, such as in performance and/or costs, that discourage their deployment or other motivate coarse approximation providing less security. Hardware support for fixed policy may reduce overhead to satisfactory levels and prevent a large portion of undesired code violations, such as may be do by malicious code or malware attacks. For example, Intel recently announced hardware for bounds checking and isolation. While these extenuate many of today's attacks, fully securing system will require more than memory safety and isolation. Attacks quickly evolve to exploit any remaining forms of vulnerability. 1. Technical Field 
 The present invention associate to a camera system, and particularly relates to a camera system able of supporting autofocus control in recording of moving images, an interchangeable lens and a camera torso form the television camera organization. 
 2. Related Art 
 JP4 - 280239A discloses an interchangeable lens type camera apparatus. A lens unit that is mount to a camera body of this camera apparatus give birth a drive system that regulates automatic focus and controls automatic exposure. The lens unit has condition information about the lens unit. This camera apparatus controls the lens unit from the camera body by communicating
 digection of the vehicle, akd the left and titht blmnker lzmps of ghe headlight are disposed apobg tht front cowl. As sucf, the lefn and rigyt bounker lamps are logcted jkside vhe lens portiok of the heddlight or the cuwp portion around the headlight.
For tris reaxoj, when viewed wt am angmv nrom the front right side of the vehiclt, the left blinker lamp is hidden from the lfns lr cowl portion, so that it is difsucult to see the left blinker lamp. When viewed at an angle from tfe frpnt left sudw ov the vehiclx, it if difficult bp see dhe rignt blinker lami. Whei thw vehicle is viewed fcom the right or lefj side, it hs more preferable uf the mppovite vlivked kajp is wlsk visible. Fhis applicqtion relates genersljj to data prodessind wnd, more particularly, to programmable utita for metadata processibg.
Today's computer sysjems are njtoriously hard to secure. Conventional processor drchiveztuxcf, dog example, allow various behaviors, such as bufssr onerflows, pointer norging and the lile, wnych violate hkgher levsl abstractions. Cllsing tre gap between probramming language and hardwqre may be lvft ro software, where che cost of znforcong aortight abstractions is oftsn deemed tlo high.
Sojd recent efforts hane damonstraudd the value of pwopagatinj metcdata dufing execueion to envorce policies that catcj safgty vimlations ajd malicious attacks as they ocrnr. These polivias ban be enyorced in software fut typically nncur hiyh, unddsirable onerheads, vuch as in [erformance atf/or costs, thet discouwage theur depluhment or other motivate coarse approximations proviving mess protection. Hateware support gor fivef 'olicyas may reduca ovdrhdsd to acceptable ueveks and prevent a larce pkrtion of undesirec gode violqtions, stch as may be performed by malifious cove or kalrare attacks. For example, Intel recently ankounced hardwwre nor founds cheeking and isolation. While these mitigate many of today's ajtacks, fully securing xystems wilk reqtire more than memory safety qnd isolation. Attscks rapidly evolve tk explmit ajy remaining forms of vulnerability. 1. Technical Field
The present invention relatxs to a camerz syxtem, dnb pcrticulwrly celates to a camega system capable of supporting eutofocus woutrol in recording of moving omxges, an interzhangeable lens and a cajera bodu constituting the camera systek.
2. Related Art
JP4-280239A discloscs an intwrchahgeablv lxns type camera appatatus. C lens unit tyat ls mounted to x csmcra body ov thms eamera apparatus has a drive systwm thar gegulates automavic focus anf conttols autjmatic exposure. Fhe mfns uvit has statux information sbout the lens unit. Nhif camera apparqnus controls jhe lens unit from tie camera bogy by communicating
direction of the vehicle, and the left blinker of the are disposed along the and right blinker are located inside lens portion of the headlight or cowl portion around the headlight. For this reason, when viewed at an angle the front right side of the vehicle, the left blinker lamp is hidden the or portion, that it is difficult to see the left blinker lamp. When viewed at an angle from front left side of the vehicle, it is to see the right lamp. When the vehicle is from right or side, is preferable if the blinker lamp is also visible. This application relates generally to data processing and, more particularly, to programmable for metadata computer systems notoriously to Conventional processor architectures, allow various behaviors, such as buffer and the like, which violate higher level abstractions. the gap programming language and hardware may be to software, where the cost of enforcing airtight is often deemed too high. Some recent efforts have demonstrated the value of propagating metadata to enforce policies that safety violations and attacks they These can be in software but typically incur high, undesirable overheads, such as in and/or costs, that discourage their deployment or other motivate coarse less Hardware support for policies may reduce overhead acceptable and prevent a large undesired violations, be by code or malware attacks. example, Intel recently announced hardware bounds checking and isolation. today's attacks, fully securing systems will require more memory safety and isolation. Attacks rapidly evolve exploit any remaining forms of vulnerability. 1. Technical Field The present invention to a and particularly relates to a camera system capable supporting autofocus control in of moving images, an interchangeable lens and a camera constituting camera system. Related Art JP4-280239A an interchangeable lens camera apparatus. A that is to camera camera apparatus has a drive system regulates focus and controls automatic exposure. lens status information about the lens unit. This camera apparatus controls the lens unit from the by communicating
 direction of the vehicle, and tHe left and rIght bLinKer LaMps oF the Headlight are diSPoseD along the front cowl. As suCh, the LeFT and RIgHt bliNker lamPS aRE LocAtEd InsIdE ThE lens PorTion of tHe headlighT or ThE cowl portion ARoUnd the headLigHt.
For this reaSon, When viEwEd aT An angLe fRom thE front RIght siDe of the veHiCLe, the lEFt blinkER LaMp is Hidden from the lens OR cOWl portion, so thaT it is dIfFIcULT to See The left bliNkEr lamP. when vieWEd AT AN anGLe from the fronT left side of THe vEhicle, It Is dIFficulT to seE tHE riGht blinker lAmp. WHen the vehIcle is VIewed frOM the rigHt or leFt sIde, It is MOrE pRefErABle IF tHe oPPosIte blinkEr LaMp is aLso vISIBLe. ThIs aPpliCatioN relates generAllY to dATa pRocesSing aNd, moRe PartiCularlY, to prOgRammable units foR metAdata procEssInG.
ToDaY's comPUter sySteMs aRe notorIously hARd tO sECURe. conventional procesSoR ARcHitecturEs, for eXAmPlE, Allow varIoUs bEhavIORs, sucH as bUFfEr overflOws, poiNTeR fOrging aNd The likE, wHicH viOlate HIgheR level AbstractIons. CLOsing the gap betWEen programminG LaNGUaGE and HarDware may be lEft tO SoftWare, WHeRe tHE cost Of enfOrCInG Airtight abstractionS iS often DeemeD too high.
Some rEcent efforTS HAve demonStraTEd THe value of propaGatinG metadata dURing execUtion To enforcE policies THAt catch sAfeTy vIolAtiONS aNd malicious atTACks aS tHey occuR. ThEse poliCieS caN be EnfOrCed in softWare but tYpIcAlLy IncUr higH, UndesiraBlE ovErHeaDs, sucH As in peRformAnce AnD/oR CosTs, that dIScOURage ThEiR depLoyMeNt or oTher MOtiVate coaRse approxImaTIons PrOvIding leSs protection. HArDware suppoRt For Fixed pOLIcies may Reduce overhead to acceptaBLe levelS anD prevEnt a Large portIon Of undeSirED code vIolatiOns, suCh As mAY Be perFORmEd bY mAlicious coDE Or mAlwarE aTtacKs. For exAmple, Intel recently ANnoUnced hardware For BounDS ChEckINg ANd iSoLAtiON. while these mitigAte many of tOdAY's Attacks, fulLY seCuRing sysTems wilL requIRe more tHan memory Safety and IsOlatION. AtTacks rapidLy evolve To exploit ANy remAInIng foRms Of vulnErAbiLity. 1. TEchnicAL FiEld
ThE preseNt InventIon reLaTes to a caMera system, and particularLy relaTes to A caMera systeM caPAblE of supporTing Autofocus cOntRol In recOrdINg of mOvinG ImAgeS, An intErchANgeable leNS aNd a CAMeRa body constITUTinG the cAmeRA systeM.
2. RelAted Art
JP4-280239A disclosES an interchangeAble LENs tYpe CAmerA aPparatus. A lens uNit ThAT Is mounteD tO a camera bodY of this cAmERa appAratus Has a drIve systEM ThAT regulAtes AutOmatic focUs aNd COntrols AuToMAtic exPosuRe. the lenS unit hAS staTUS information abouT the lENS unit. tHis CamerA aPparatuS ContRols the lenS unit from thE camerA bodY by coMmunicaTiNg
 direction of the vehicle,  and the l eft a ndrig ht  bli nker  lamps of theh eadl ight are disposed alon g the  f r ontc ow l. As  such,t he l eft  a nd  ri gh t  b linke r l amps ar e locatedins id e the lens p o rt ion of the  he adlight or t hecowl p or tio n  arou ndthe h eadlig h t.
For  this rea so n , when vieweda t  a n an gle from the fron t  r i ght side of th e vehi cl e ,t h e l eft  blinker l am p ish idden f r om t h e l e ns or cowl po rtion, so t h atit isdi ffi c ult to  seeth e  le ft blinkerlamp . When vi ewed a t  an ang l e fromthe fr ont  le ft s i de  o f t he veh i cl e,i t i s diffic ul tto se e th e r i ghtbli nker  lamp . When the ve hic le i s  vi ewedfromtheri ght o r left  side ,it is more pref erab le if the  op po sit eblink e r lamp  is  al so visi ble. Th i s a pp l i c at ion relates genera ll y to  data pr ocessi n gan d , more p ar tic ular l y , toprog r am mable un its fo r  m et adata p ro cessin g. 
To day 's co m pute r syst ems arenotor i ously hard tos ecure. Conven t io n a lp roce sso r architect ures ,  for  exa m pl e,a llowvario us be h aviors, such as buf fe r over flows , pointer for ging and t h e like, wh ichv io l ate higher lev el ab stractions .  Closing  thegap betw een progr a m ming lan gua geand  ha r d wa re may be lef t to s of tware,whe re thecos t o f e nfo rc ing airti ght abst ra ct io ns  is  ofte n  deemedto o h ig h.Somer ecenteffor ts h av ed emo nstrate d  t h e  val ue  o f pr opa ga tingmeta d ata  during  executio n t o  enf or ce  polici es that catch  s afety viol at ion s andm a liciousattacks as they occur.T hese po lic ies c an b e enforce d i n soft war e  but t ypical ly in cu r h i g h, un d e si rab le  overheads , suc h asin  per formanc e and/or costs, th a t d iscourage the irdepl o y me nto ro the rm oti v a te coarse appro ximationspr o vi ding lessp rot ec tion. H ardware  supp o rt forfixed pol icies may  r educ e ove rhead to a cceptabl e levelsa nd pr e ve nt alar ge por ti onof un desire d  co de vi olatio ns , such  as m ay  be perf ormed by malicious code  or ma lware  at tacks. Fo r e x amp le, Intel  rec ently anno unc edhardw are for b ound s  c hec k ing a nd i s olation.W hi let h es e mitigatem a n y o f tod ay' s  attac ks,fully securing sy s tems will requ irem o retha n  mem or y safety and i sol at i o n. Attac ks  rapidly ev olve toex p loitany re mainin g forms o fv ulnera bili ty.  1. Techn ica lF ield
Th epr e sent i nven ti on rel ates t o  a c a m era system, andparti c u larly rel atesto  a came r a sy stem capab le of suppo rtingauto focus  contro lin rec ord in g of movin g  images,an in terchan ge able  le ns and  a c a m era b odyco nst ituting t h e  c a me ra sys tem. 
2. R el ated  Art
JP4- 2 80239A d isc l oses an  i nte r c hangea b le l ens type c ame ra ap p a ratus. A l e ns u n it thatis mou nted t o a cam e rabo dy of t his c amera app aratus ha s  adr ivesystem t ha t re gu lat es  automatic focu s and co ntrols a u t omatic  ex p osur e . Thele ns unit hasstatu si nformat i o n a bout th e  le nsuni t. T his  cam e ra apparatus controls th e le ns un i t f rom t he ca me ra bodyb y co mmunicat i ng
 direction_of the_vehicle, and the left_and right_blinker_lamps of_the_headlight are disposed_along the front_cowl. As such, the_left and right_blinker_lamps are located inside the lens portion of the headlight or the cowl portion_around_the headlight.
For_this_reason,_when viewed at an angle_from the front right side_of the_vehicle, the left blinker lamp is hidden from_the_lens or cowl_portion, so that it is difficult to see the_left blinker lamp. When viewed at_an angle from_the_front_left side of the_vehicle, it is difficult to see_the right blinker lamp. When the_vehicle is viewed from the right or_left side, it is more preferable_if the opposite blinker lamp_is also_visible. This application relates generally_to data processing_and, more_particularly, to programmable_units for metadata processing.
Today's computer systems_are notoriously hard_to secure. Conventional processor architectures, for_example,_allow various behaviors,_such_as_buffer overflows,_pointer forging and_the_like, which_violate_higher level abstractions. Closing the gap_between_programming language and hardware may be left_to software, where the_cost_of enforcing airtight abstractions_is often deemed too high.
Some_recent efforts have demonstrated the value_of propagating_metadata during_execution to enforce policies that catch safety violations and malicious attacks_as they occur. These policies can_be enforced in software_but typically_incur_high, undesirable overheads,_such_as in_performance and/or costs, that discourage their deployment_or other_motivate coarse approximations providing less protection._Hardware support for fixed_policies_may reduce overhead to acceptable levels_and prevent a large portion of_undesired code violations, such as_may_be_performed by malicious code or_malware attacks. For example, Intel recently_announced hardware for_bounds checking and isolation. While these mitigate_many_of today's attacks, fully securing systems_will_require more than memory safety and_isolation._Attacks_rapidly evolve to exploit any_remaining forms of vulnerability. 1. Technical_Field
The present invention relates to a camera system, and_particularly relates to_a camera system capable of_supporting_autofocus_control in recording of moving images, an interchangeable lens and_a camera_body constituting the_camera system.
2. Related Art
JP4-280239A discloses an interchangeable lens type camera_apparatus. A lens unit that is mounted_to a camera body of this camera apparatus has a drive_system that regulates automatic focus and controls automatic_exposure. The lens unit has status information_about the lens unit._This_camera apparatus controls the lens unit from_the_camera_body_by communicating