
bernard jey. letchner

bernard jey. letchner (25 janwari 1932-11 aprail 2014) ack electronics engineer aur poorv upaadhyaksh, aar. see. aeye. prayogashaalaaen they, jahan unhone television aur soochana pradarshan praudyogikiyon key vibhinn pahaluon koo cover karate hue 30 varshon taka kaam kiya.
jeevani.
letchner kaa janm 1932 mein newyork shahar, newyork mein huaa thaa. way badey hue aur nyu york key nyu roshell mein hyee school mein padhaai kii. unake "maukhik itihas" kii yaadon key anusaar, way apane hyee school key varshon key dauran pahale seey hii radio aur tv receivers mein bahut ruchi rakhate they. unhone vyaavsaayik roop seey upalabdh kiton key saath sett banaae.
phir, unhone newyork shahar key kolambiya vishvavidyalaya mein electrical engineering kaa adhyayan kiya, jisamen yuu. aiss. key liye dou saal kii seva baadhit hui.aiss. sanyukt raajya america aur germany mein senaa signal core. unhone bee praapt kiya.aiss.ee.ee. 1957 mein degree.
1957 mein, vaha takniki karmchari key sadasya key roop mein prinston, nyu jersey mein aar. see. aeye. prayogshalaon mein shamil hue aur video engineering key vibhinn pahaluon jaise kii ack home video tape recorder, dou-tarfa cable tv sevaaon (paye-tv aur interactive shopping), tv tunor aur tv prasaran camers parr kaam kiya. unhone inn vikaason parr kaam karane vaale vibhinn aar. see. aeye. anusandhaan samoohon kaa netritva kiya.
aar. see. aeye. mein pahale seey hii kaam karate hue, unhone prinston vishvavidyalaya aur harvard school off business mein snaatak kaary kiya.
burney kaa nidhan 11 aprail, 2014 koo huaa.
sakriya matricks pataa.
george aich. heilmyer, joe letchner key ack saal baad aar. see. aeye. prayogshalaon mein shamil hue they, ney 1964 mein taral chrystal key saath kaam karna shuru kiya. heilmyer key netritva mein ack team ney pahala taral chrystal display (ell. see. dee.) vikasit kiya. letchner tv screen parr lcd lagu karane key iraade seey prayason mein shamil hoe gaye. iss uddeshya key liye, letchner kii team ney kuchh panktiyon aur stambhon key saath saral matricks lcd kaa adhyayan kiya. yeh spasht hoe gayaa kii seemit vipareetata aur pratikriya gati key kaaran ack pratyaksh-drive sambodhan yojana (nishkriya matricks sambodhan) dwara sambodhit karane yogya chitra tatvon (pixel) kii sankhya key liye kadee seemaaen theen. letchner ney sabse pahale pratyek lcd pixel key samanantar ack sandharitra koo jodkar aur ack kshetra-prabhaav transister key madhyam seey isake avesh koo niyantrit karke iss prakaar key pradarshan key liye ack "namuna-aur-pakad" takneek lagu kii. baad mein, iss takneek koo sakriya matricks kahaa gayaa, jisamen patali-film transister (tii. aff. tii.) kaa upayog kiya gayaa. isase madad millie kii aar. see. aeye. kaa ardhchaalak sanchaalan mose-fait vikas (see. aim. oh. aiss. 4000 shrinkhala) key netaaon mein seey ack thaa. newyork mein aar. see. aeye. mukhyalaya mein ack samvaadaata sammelan mein, 1968 mein asatat ghatakon kaa upayog karate hue 36 pixel key saath iss tarah key ell. see. matricks display kaa pradarshan kiya gayaa aur tv panels key liye avadharana kii vyavaharyata koo dikhaaya gayaa. 1969 mein ack sambandhit prakaashan huaa.
aar. see. aeye. ney ell. see. dee. parr prayason koo cumm curr diyaa aur 1976 mein shesh sanchaalan koo betch diyaa. letchner ney unnat video pranaliyon parr apana kaam kendrit kiya. way inn gatividhiyon key liye aar. see. aeye. key karmchari upaadhyaksh baney. iss haisiyat seey way 1989 seey 1990 taka ack nae aich. dee. tii. vee. maanak key liye geneva mein "comitte consultatiff international porr laa radio" (see. see. aaee. aar., abb itu-aar.) mein americi pratinidhimandal key sadasya they.
letchner doori.
letchner doori chart usa ishtatam dekhane kii doori koo darshaata haye jiss parr maanav aankh ack aich. dee. tii. vee. resolution key vivaran koo sabse achchi tarah seey sansaadhit curr sakati haye.
udaaharan key liye, 42 inch (110 semi) poorna hd tv (1080pee) key liye ishtatam dekhane kii doori haye.
letchner ney kaee americi gharon mein maap laker ack darshak aur unake television screen key beach vishisht doori parr shodh kiya. unake sabhi aankadon seey sankalit ausat doori saamane aaee. iss doori koo dekhate hue, ack poorna hd tv (1080pee) screen key aakar key saath ishtatam dekhane kaa resolution pradaan karega.
jaba jee ney rca kaa adhigrahan kiya aur 1987 mein david sarnoff anusandhaan kendra koo shree international koo diyaa, tou letchner ney jaldi sevaanivritti leey lii. letchner ney maanak samitiyon aur sambandhit sangathanon mein seva karane vaale swatantra salaahkaar key roop mein apana kaam jaari rakhaa aur saath hii patent mamalon mein ack visheshagya gawah key roop mein bhee kaam kiya.
sadasyata aur puraskar.
letchner aaee. aaee. ee. ee., society forr information display (sid) aur society off motion picture aind television engineers (aiss. aim. pee. tii. ee.) key sadasya they. way taau beeta paaee, etaa kappa nue aur sigma xi sammaan samitiyon key sadasya they.
1971 mein, unhein matricks pradarshan mein unake utkrisht yogdan key liye sid fraans rais darne puraskar kaa pahala praaptakarta naamit kiya gayaa thaa aur 1983 mein, unhein sid mein unake yogdan key liye beatrice vijeta puraskar kaa pahala praaptakarta naamit kiya gayaa thaa. 
unhein 1996 mein david sarnoff padak aur 2001 mein society off motion picture aind television engineers (aiss. aim. pee. tii. ee.) dwara aaj kii television pranaliyon key liye aavashyak praudyogikiyon mein unake kaee yogdan key liye pragati padak seey sammaanit kiya gayaa thaa. letchner koo dou aar. see. aeye. prayogshala utkrisht upalabdhi puraskar aur vigyaan mein ack david sarnoff team puraskar milaa.
2000 mein, unnat television pranali samiti (aeye. tii. aiss. see.) ney bernard jey. kii sthaapana kii. unake sammaan mein letchner puraskar. 2011 mein, unhein sakriya matricks ell. see. dee. aiss. (aeye. aim. ell. see. dee.) key siddhant kii kalpana karane key liye aaee. ee. ee. ee. juuna-ichi nishizawa padak milaa.
chayanit prakaashan.
letchner ney pradarshan aur television pranaliyon key kshetron mein vyaapak roop seey prakaashit kiya haye. unake paas duss sanyukt raajya america patent bhee hain.

