 relevant to the examination of claims to the present invention. However, it is respectfully submitted that none of the above-indicated patents disclose, teach, suggest, show, or otherwise render obvious, either singly or when considered in combination, the invention described and claimed herein. Transmission of data, such as television signal data representative of an image scanned, usually requires a substantial amount of data to be transmitted before a sufficiently useful reproduction of the image can be produced from a receiver receiving the data. Various systems have been proposed in which data derived from scanning an image is compressed before transmission, expanded upon reception and reproduced. The viewer at the receiver still has to wait for much of the received data to be received and reproduced before he can view a useful image.
It is an object of the invention to provide an improved encoding method and apparatus. The present invention relates, in general, to insulated steam injecting tubing and, in particular, to a new and useful device for sealing a port that communicates with an annular space between inner and outer tubulars of the unsulated steam injecting tubing, to maintain a vacuum in that space which was drawn through the port.
U.S. Pat. No. 4,396,211 to McStravick et al discloses an insulated tubular conduit for use in forming a tubing string a subterranean well. The conduiit comprises inner and outer tubing with an annular cavity formed therebetween. A fixture is provided for evacuating the gases from the annular cavity. This fixture include a clamp extending around the exterior of the outer tubing. A passage extends radially through the fixture and communicates with an evacuation port in the outer tubing. A plug, such as a tapered pin, surrounded by an annular seal, can be inserted into this passage. A vacuum hose connected to the fixture and communicating with the passage can be connected to a vacuum pump for drawing a vacuum from the annular cavity. After a suitable vacuum has been drawn, the pin which is a tapered pin, is driven into the vacuum port to close the annular cavity.
U.S. Pat. No. 1,472,019 to Hitch discloses a double walled receptacle in the form of a bottle having an outer shell and an inner shell wherein an air chamber is provided between the inner and outer shells. A tapered air passage is formed in the outer shell. A sleeve is clamped to the receptacle and provides a passageway and communication with the tapered air passage which, in turn, provides a passage for drawing air form the air chamber
relevant to the examination of claims to the present invention. However, it is respectfully submitted that none of the above - indicated patent unwrap, teach, suggest, show, or differently render obvious, either individually or when considered in combination, the invention described and claim herein. infection of data, such as television receiver signal datum representative of an image scan, usually requires a substantial sum of data to be transmitted before a sufficiently useful reproduction of the image can be produce from a receiver receiving the data. versatile systems have been proposed in which data derived from scan an image is compressed before transmission, expanded upon reception and reproduced. The spectator at the receiver still has to wait for much of the received data to be welcome and reproduced before he can view a useful image. 
 It is an object of the invention to provide an improved encoding method and apparatus. The present invention relates, in general, to insulated steam inject tubing and, in particular, to a modern and utilitarian device for seal a port that communicates with an annular space between inner and outer tubulars of the unsulated steam injecting tubing, to keep a vacuum in that space which was drawn through the port. 
 U.S. Pat. No. 4,396,211 to McStravick et al discloses an insulated tubular conduit for consumption in forming a tubing string a subterranean well. The conduiit comprises inside and outer tube with an annular cavity formed therebetween. A fixture is provided for evacuating the gases from the annular pit. This fixture include a clamp extending around the exterior of the outer tubing. A passage extends radially through the fixture and communicates with an elimination port in the knocked out tube. A plug, such as a tapered pin, surrounded by an annular seal, can be insert into this passage. A void hose connected to the fixture and communicate with the passage can be connect to a vacuum pump for drawing a vacuum from the annular cavity. After a suitable vacuum has been drawn, the fall which is a tapered pin, is driven into the void port to close the annular cavity. 
 U.S. Pat. No. 1,472,019 to Hitch discloses a double walled receptacle in the form of a bottle have an outer shell and an inner shell wherein an air bedroom is provided between the inner and out shells. A tapered air enactment is formed in the outer carapace. A sleeve is clamped to the receptacle and provides a passageway and communication with the tapered air travel passage which, in turn, provides a passage for drawing air travel form the air chamber
 repevant to the examinatiok of claims to tkw presxnt invsntion. Huwever, it is respectfully suumitred tyat none of the above-ivdicated iatents duscliwe, teach, snfgest, smjw, od othzrxise render obvlous, either singly or whet zousidered in combination, the inventiog descrobfd and claimed hertin. Trahsmission of data, such as televisikn signel data represemtative of an image scannef, uskally requires a skbstantial qmougr of data to be transmpcted before a sufficiently useful reproducgion pf the imate caj be producev from a receiver vvceivinc the dsta. Various syxteks yave been proposed in which data deriveq from scdnuing an image is compeewsed tefose tfqnsoisaipn, expanfed upon receltion and rwproduced. The viewet wn the received stilj ras to wait for much of the received daua to be received and reprodyced before he can vigw a usefuj image.
It is an object of the invention to provida an mmororcq wnfoding method and apparatus. The present invenejom gelates, in generaj, to insulayef xjeam injecting tubiny ahd, in particular, tl a new and yseful dedice for sealing a port that conmunicates wpth qn annular space bztween inner and outet tubulars of the unsulcted sfeam injectlng tubinf, to maintain a vxculm it that skxce which was drarn througi the port.
U.S. Pat. No. 4,396,211 tj McStravifk et al discloses an indulatgd tubglar condult for use in forming a tubing string a subtetrateat well. Tke concuiit comprisqs inner and ooter tubiug witf an annulzr cavivy formed thqrebetween. A xlxture is prmvided fjr ecacuqting tfd gases from tne annulag eavity. Thus fixture include a zmamp extending cxoobd the exteriot ow tre onter egbing. A passdge dxtdmds rxdially thrijgh yhe fixture and commgnicztes with an evacustlon port un the otter tubing. A plug, such as a takered 'in, sucroundrd fy an annular seal, can be insedted into thls passage. A dacumm hjse connecced to the fixture and communicating witi the passage can be cobnected to a vacuum kump for drawmng a dacuum frmm the annular cavitt. After a suitablt vacuum has been drawn, the phn whlch is a tapered pin, is driven into the vacuum port to close the annular xavity.
N.S. Pat. No. 1,472,019 to Hitvh divcjpses a douulx walled receptacke in the form of a bottle haviig an outes fhell and an inner shell whetekn an air chaober is provided between the innrr and outer shells. A tapered aor passage is formed in bhe outer shelm. A slvgve is clamped to the recepcacle qnd procided a passagewah amd communicwtioi wnth the tapered air passage which, in tuen, provides a passege for drawlnn air rorm tre air chamber
relevant to the examination of claims to invention. it is submitted that none teach, show, or otherwise obvious, either singly when considered in combination, the invention and claimed herein. Transmission of data, such as television signal data representative of image scanned, usually requires a substantial amount of data to be transmitted before sufficiently reproduction the can be produced from a receiver receiving the data. Various systems have been proposed in which derived from scanning an image is compressed before expanded upon reception and The viewer at the receiver has wait for of received to be received reproduced before he can view a useful image. It is an object of the invention to provide improved encoding apparatus. The invention in to insulated steam and, in particular, to a new for sealing a port that communicates with an space between and outer tubulars of the unsulated injecting tubing, to maintain a vacuum in that which was drawn through the port. U.S. Pat. No. 4,396,211 to McStravick et al discloses tubular conduit for use forming a tubing a well. conduiit inner and tubing with an annular cavity formed therebetween. A fixture is provided evacuating the gases from the annular cavity. This fixture include extending the exterior of outer tubing. A passage radially the fixture and communicates evacuation in A such a tapered pin, surrounded an annular seal, can be into this passage. A fixture and communicating with the passage can be to a vacuum pump for drawing a from the annular cavity. After a suitable vacuum has been drawn, the which is pin, is driven into the vacuum port to the annular cavity. U.S. No. 1,472,019 to Hitch discloses a double walled receptacle the of a having an outer and an inner wherein an air provided between inner outer air passage is formed in the shell. sleeve is clamped to the and passageway and communication with the tapered air passage which, in turn, provides a passage for form the air chamber
 relevant to the examination oF claims to tHe preSenT inVeNtioN. HowEver, it is respecTFullY submitted that none of thE abovE-iNDicaTEd PatenTs disclOSe, TEAch, SuGgEst, ShOW, oR otheRwiSe rendeR obvious, eiTheR sIngly or when cONsIdered in coMbiNation, the invEntIon desCrIbeD And clAimEd herEin. TraNSmissiOn of data, sUcH As teleVIsion siGNAl Data Representative of aN ImAGe scanned, usualLy requIrES a SUBstAntIal amount oF dAta to BE transmITtED BEfoRE a sufficientlY useful reprODucTion of ThE imAGe can bE prodUcED frOm a receiver ReceIving the dAta. VarIOus systEMs have bEen proPosEd iN whiCH dAtA deRiVEd fROm ScaNNinG an image Is CoMpresSed bEFORE traNsmIssiOn, expAnded upon recePtiOn anD RepRoducEd. The ViewEr At the ReceivEr stiLl Has to wait for mucH of tHe receiveD daTa To bE rEceivED and reProDucEd beforE he can vIEw a UsEFUL iMage.
It is an object of ThE INvEntion to ProvidE An ImPRoved encOdIng MethOD And apParaTUs. the preseNt inveNTiOn Relates, In GeneraL, tO inSulAted sTEam iNjectiNg tubing And, in PArticular, to a neW And useful deviCE fOR SeALing A poRt that commuNicaTEs wiTh an ANnUlaR Space BetweEn INnER and outer tubulars of ThE unsulAted sTeam injecting Tubing, to maINTAin a vacuUm in THaT Space which was dRawn tHrough the pORt.
U.S. Pat. NO. 4,396,211 to Mcstravick Et al disclOSEs an insuLatEd tUbuLar CONdUit for use in foRMIng a TuBing strIng A subterRanEan WelL. ThE cOnduiit coMprises iNnEr AnD oUteR tubiNG with an aNnUlaR cAviTy forMEd therEbetwEen. A FiXtURe iS providED fOR EvacUaTiNg thE gaSeS from The aNNulAr cavitY. This fixtUre INcluDe A cLamp extEnding around tHe Exterior of ThE ouTer tubING. A passagE extends radially through THe fixtuRe aNd comMuniCates with An eVacuatIon POrt in tHe outeR tubiNg. a plUG, Such aS A TaPerEd Pin, surrounDED by An annUlAr seAl, can be Inserted into this paSSagE. A vacuum hose cOnnEcteD TO tHe fIXtURe aNd COmmUNIcating with the pAssage can bE cONnEcted to a vaCUum PuMp for drAwing a vAcuum FRom the aNnular cavIty. After a SuItabLE VacUum has been Drawn, the Pin which iS A tapeREd Pin, is DriVen intO tHe vAcuum Port to CLosE the aNnular CaVity.
U.S. pat. No. 1,472,019 To hitch disCloses a double walled recePtacle In the ForM of a bottlE haVIng An outer shEll aNd an inner sHelL whErein An aIR chamBer iS PrOviDEd betWeen THe inner anD OuTer SHElLs. A tapered aIR PAssAge is ForMEd in thE outEr shell. A sleeve is cLAmped to the recePtacLE And ProVIdes A pAssageway and coMmuNiCATion with ThE tapered air Passage wHiCH, in tuRn, provIdes a pAssage fOR DrAWing aiR forM thE air chambEr
 relevant to the examinati on of clai ms to  th e p re sent  inv ention. Howeve r , it  is respectfully submi ttedth a t no n eof th e above - in d i cat ed  p ate nt s  d isclo se,  teach,  suggest,sho w,  or otherwis e  r ender obvi ous , either sin gly  or wh en  co n sider edin co mbinat i on, th e inventi on descri b ed andc l ai medherein. Transmiss i on of data, suchas tel ev i si o n  si gna l data rep re senta t ive ofa ni m a ges canned, usual ly requires a s ubstan ti ala mountof da ta tobe transmit tedbefore asuffic i ently u s eful re produc tio n o f th e  i ma geca n  be pr odu c edfrom a r ec ei ver r ecei v i n g  the  da ta.Vario us systems ha vebeen pro posed  in w hich  d ata d erived  from  s canning an imag e is  compress edbe for etrans m ission , e xpa nded up on rece p tio na n d  r eproduced. The vie we r at  the rec eivers ti ll has to w ai t f or m u c h ofther ec eived da ta tob ere ceivedan d repr od uce d b efore he c an vie w a usef ul im a ge.
It is an o b ject of the i n ve n t io n  topro vide an imp rove d  enc odin g  m eth o d and  appa ra t us .  The present invent io n rela tes,in general, t o insulate d s team inj ecti n gt ubing and, inparti cular, toa  new and  usef ul devic e for sea l i ng a por t t hat  co mmu n i ca tes with an a n n ular  s pace be twe en inne r a ndout ertu bulars of  the uns ul at ed  s tea m inj e cting tu bi ng,  t o m ainta i n a va cuumin t ha ts pac e which wa s draw nth roug h t he  port .
U. S . P at. No.  4,396,21 1 t o  McS tr av ick etal disclosesan  insulated  t ubu lar co n d uit foruse in forming a tubing stringa s ubter rane an well.The  condu iit compri ses in ner a nd  ou t e r tub i n gwit han annular c avi ty fo rm ed t herebet ween. A fixture is pro vided for eva cua ting t he  ga s es fro mt hea n nular cavity. T his fixtur ei nc lude a cla m p e xt endingaroundthe e x teriorof the ou ter tubin g.  A p a s sag e extendsradially  throught he fi x tu re an d c ommuni ca tes  with  an ev a cua tionport i nthe ou ter t ub ing. A p lug, such as a taperedpin, s urrou nde d by an a nnu l arseal, can  beinserted i nto  th is pa ssa g e. Avacu u mhos e  conn ecte d  to the f i xt ure a nd  communicat i n g  wi th th e p a ssagecanbe connected to a vacuum pump fo r dr a w ing  av acuu mfrom the annul arca v i ty. Afte ra suitablevacuum h as beendrawn,  the p in whic h is a tape redpin , is driv enin t o the v ac uu m  portto c lo se the  annul a r ca v i ty.
U.S. Pat. No . 1,4 7 2 ,019t o H itchdi scloses a do uble walle d receptacl e in t he f orm o f a bot tl e havi ngan  outer she l l and aninner  shellwh erei n a n aircham b e r isprov id edbetween t h e  i n ne ra ndoute r she ll s. A  tapereda ir passa gei s forme dint h e oute r  s h e ll. A slee veis cl a m ped to the rece p ta c le an d prov ides a  passag e way  a nd comm uni c a tion with  the tape r edai r pa ssage wh ic h, i ntur n,  provides a pas sage for  drawing a ir for m t h e ai r  chamb er 
 relevant_to the_examination of claims to_the present_invention._However, it_is_respectfully submitted that_none of the_above-indicated patents disclose, teach,_suggest, show, or_otherwise_render obvious, either singly or when considered in combination, the invention described and claimed_herein._Transmission of_data,_such_as television signal data representative_of an image scanned, usually_requires a_substantial amount of data to be transmitted before_a_sufficiently useful reproduction_of the image can be produced from a receiver_receiving the data. Various systems have_been proposed in_which_data_derived from scanning an_image is compressed before transmission, expanded_upon reception and reproduced. The viewer_at the receiver still has to wait_for much of the received data_to be received and reproduced_before he_can view a useful image.
It_is an object_of the_invention to provide_an improved encoding method and apparatus._The present invention_relates, in general, to insulated steam_injecting_tubing and, in_particular,_to_a new_and useful device_for_sealing a_port_that communicates with an annular space_between_inner and outer tubulars of the unsulated_steam injecting tubing, to_maintain_a vacuum in that_space which was drawn through_the port.
U.S. Pat. No. 4,396,211 to_McStravick et_al discloses_an insulated tubular conduit for use in forming a tubing string_a subterranean well. The conduiit comprises_inner and outer tubing_with an_annular_cavity formed therebetween._A_fixture is_provided for evacuating the gases from the_annular cavity._This fixture include a clamp extending_around the exterior of_the_outer tubing. A passage extends radially_through the fixture and communicates with_an evacuation port in the_outer_tubing._A plug, such as a_tapered pin, surrounded by an annular_seal, can be_inserted into this passage. A vacuum hose_connected_to the fixture and communicating with_the_passage can be connected to a_vacuum_pump_for drawing a vacuum from_the annular cavity. After a suitable_vacuum has been drawn, the pin which is a_tapered pin, is_driven into the vacuum port_to_close_the annular cavity.
U.S. Pat. No. 1,472,019 to Hitch discloses a_double walled_receptacle in the_form of a bottle having an outer shell and an_inner shell wherein an air chamber is_provided between the inner and outer shells. A tapered air passage_is formed in the outer shell. A sleeve_is clamped to the receptacle and provides_a passageway and communication_with_the tapered air passage which, in turn,_provides_a_passage_for drawing air_form the air_chamber