
phone vision

phonevision anedi prapanchamlooni mottamodati pae television vyavasthanu roopondinchadaaniki atyunnata radeo samstha roopondinchina project. idhi modata chikagolo abhivruddhi cheyabadindi mariyu praarambhinchabadindi, taruvaata newyork nagaram mariyu connecticut looni hartford loe tadupari trials jarigaayi.
charitra.
prakatanalu matrame television prasaranni deerghakaalamlo aacharaneeyamaina samsthagaa samardhinchalevani nammi, 1931 lone genious pae televisiontho prayogaalu chesindi. 1939 fibravari 2naa doubleu9exzevi prasaram ayinappudu, jenith modata chikagolo television chaanal 1nii aakraminchindi. W9xzv america yokka mottamodati yaantrikam kaani television stationlalo okati mariyu october 1940 varaku, chikagoloni ekaika television station. jenith ketayimpu taruvaata chaanal 2kii maarchabadindi. 1947loe, jenith paripuurnamaina pae television vyavasthanu prakatinchindi mariyu eee bhavanaku trademarkga "phonevision" anae paerunu enchukundi. 1950loe, public pae television pareekshaku sannahakamgaa, prayogaatmaka station atyunnata karmagaram nundi kshetra bhavananiki maari ks2xbsgaa maarindi.
juulai 1953loe, wisconsinlo chhaanel shuffling yokka dushprabhaavamgaa federal communications commission dwara wbbm-tvni chhaanel 4 nundi chhaanel 2kii marchinappudu jenith ks2xbsnu moosiveyavalasi vachindi. ks2xbs station yokka transmitter taruvaata chikago yokka modati vidya station, pbs member station doublutitidableu (chaanal 11) kuu viraalamgaa ivvabadindi.
1954loe, jenith thoorpu united stateslo pareekshalanu tirigi praarambhinchindi (newyork nagaramloni varr-tvlo, ippudu doubluedabluer-tvlo mariyu sameepamloni secoucus, newjerseeki licenses pondindi), taruvaata australia mariyu nyoojilaandlo videshee oppandaalapai charchalu jaripindi. idhi kanektikatlo kooda kontakaalam prasaram cheyabadindi. jaateeya vijayanni pondadamlo viphalamainappatiki, phone vision kosam gananeeyamaina mottamlo pracharam mariyu prakatanalu swalpakaalam kosam srushtinchabaddaayi.
kanektikatloni hartfordloni station doubleuhechtilo phone vision vyavastha kaneesam aidella paatu panicheestuu, 1968 praarambhamlo mugisindi. station pagatipuuta sampradaaya (chandha laeni) vinoda kaaryakramaalanu "swatantra" gaa nirvahistundi, aapai saayantram phone vision-encode prograamku maarutundi.
phone vision concept.
phone vision venuka unna bhaavanalo chalana chitraalanu prati chitraaniki $1 (dravyolbananiki sardubaatu) vadda home veekshakulaku andubaatulo unchadam untundi. prekshakulu television paina kuurchunna, television antenna leads loki mariyu telephone line loki kooda plug cheyabadina descrambler unitnu konugolu cheyalsi vachindi. cinema chudalanukune evarainaa phone vision operatorku coll chestaaru, athanu vaarini veekshakudi cuelo cherchaadu. phone linela dwara pampabade signal baaks signalnu decromble cheyadaaniki anumatistundi mariyu nela chivarilo, veekshakulu vaari saadhaarana telephone billupai cinema kosam billu cheyabadataru. jenith yokka 1951 modal tv setlalo konni phone vision kosam pratyeka connectornu kaligi unnaayi mariyu phone vision conceptnu vivarinche yajamani maanyuvallo oka vibhaganni kaligi unnaayi, elaa arder cheyaalo suuchanalu mariyu chalanachitra prasaaraala kosam oka schedulenu andistaayi.
america theatre yajamaanulu eee sevanu oka smaaraka parajayam anie pilicharu. ayithe, appati atyunnata sthaayi adhyakshudu yujeen eff. mcdonald, eee seva garjistuu vijayam saadhinchindi. modati 300 pareeksha gruhaalaku modatlo andubaatulo unna moodu chitraalu rendu samvatsaraala kante paatavi ayinappatikee, phone vision veekshakulalo kevalam 18 saatam mandhi matrame vaatini sinimaalalo chuusaaru, mariyu phone vision gruhaalalo 92 saatam vaaru intlo sinimaalu chuudataaniki ishtapadataarani nivedinchaaru.
saanketika samacharam.
veediyo lopaliki mariyu velupaliki alasyam chese geetanu marchadam dwara vyavastha nirvahinchabadutundi, idhi chitraanni slatluga kattiristundi (open venetian blind dwara chudatam vantivi). sagam slaatlu gananeeyamaina mottamlo kudivaipuku maarchabadataayi. decoding prakriyanu tippikotti, chitraanni tirigi amarchutuu, adhe mottaaniki paiga itara slaatlanu jaaravidichi. veediyo samacharam kooda dasalo tiragabadindi, nalupu mariyu telupu marpidi cheyabadindi. audeo "frequency inversion scrambling" dwara proses cheyabadindi, audeo spectramnu frequencylo 2.625 kz varaku maarchindi. idhi adhika pounahpunyaalu matrame unnatlayithe tappa, single side byaand radeo laaga dhwaninche audeonu utpatti chesindi.
audeo yokka decoding dual-conversion processor dwara cheyabadindi. audeo modata 31.5 kz paiki maarchabadindi, aapai 34.125 kz krindiki maarchabadindi, idhi 2.625 kz yokka nikara "down shift" nuu utpatti chesindi. 31.5 anedi 15.750 kz yokka kshitija samaantara sweep frequenseeki rettimpu, mariyu 34.125 kz anedi × 15.750, idhi soukaryavantamaina frequency suuchananu istundi. frequency tolerance entha gattiga undho, phone vision prasaram samayamlo encode cheyabadina audeo record cheyabadi, taruvaata saadhaarana network prograaminglo nadustunna intlo tayaaru chesina processorloki tirigi play cheyabadithe, punaruddharinchabadina audiolo swalpa frequency lopam kanugonavacchu. alaage, sthaanika vaanijya prakatnanu nadapadaniki station sthaanika samakaaleekaranaku marinappudu, pounahpunya maarpu vinabadutundi.
phone vision vyavastha yokka pradhana parimitulalo okati emitante, aalasya line lopaliki mariyu velupaliki maaradam valla, rangunu prasaram cheyalekapoyindi, endukante enn. tii. ess. sii. rangu prasaaraaniki avasaramaina 3.58 emm. hetch. jedd faze laaknu nirvahinchalekapoyindi. eee parimiti 1969loe chandha prograaming yokka eff. sii. sii. adhikaaramtho paatu vyavastha yokka pathanaaniki dohadapadindi.