Colour CRT Monitors

Beam intensity illuminated sopts arthat prakshit bidnuoo ka ek pattern arthat pratirooop banane ke athwa frame buffer namnak memory area mei surakshit kiya jata hai is memory area mei sabhi screen points ki intensity values ke set ko surakshit kiya jata hai tatapshchat stord intensituy values ko refresh buffer se retrieve kiya jata hai or ek samaye par ek row athwa scan buffer se retrieve kiya jata hai tatah screen par panit kiya jata hai screen ke pratyek point ko pixel athwa pel joki picture element ka sanskshipt roop hai kaha ja sakta hai.

Raster scan display mei prati second 60 se 80 frames ka refreshing hota hai yadhyapi kuch systems ko ucch refresh rate ke liye design kiya jata hai kabhi kabhi refresh rates ki saykals par second athwa hartaj ke roop mei paribahshit kiya jata hai yah cycle ka tataoprye ek frame se hai pratyek scan line ke antt mei pahuchne par agli scan line ka p[radarshan aarambh karne ke liye electron beam sceen ke bayi or chali jati hai pratyek scan line ko refresh karne ke pashchat screen ke bayi or aane ko electron beam ka horizontal rates kaha jata hai pratyek frame joki ek second ke 1/80 se 1/60 we bhag mei pradarshit hota hai ke antt mei electron beam agle frame ko prarambh karne ke liye screen ke top left corner par wapas chali jati hai isey electron beam ka varticle retrets kaha jata hai.
Kuch raster scan systems ort television stes mei frame ko ek interlesd refresh processor ki sahayata se do posses mei pradarshit kiya jata ha9i pratham pass mei beam pratyek anue scan line ko top se bottom tak swap karti hai varticle sets ke pashchjat beam shesh scan lines ko swap karti hai scan lines ki is prakar ki interlacing dwara ham puri screen par display iske aadhe samaye mei dekh pate hai jitna ki isey samasta lines ko ek baar upar se niche arthat top se bottom scan karne mei lagta hai.

Ek colour crt monitoirs vibhinn rango ko utpann karne wale phosphorus ke sanyogan se screen par rangeen chitro ko banata hai.

Colour display utpann karne wale cathode ray tube mei phosphorus ko vibhinn cpmpunds se coat karke vibhinn rangeen chitro ko utpann nahi kiya jata hai balki run time par chune gaye characteristics ke adhar par rangeen chitro ko utpann kiya jata hai.

Colour display ka mukhye siddhant yah hai ki pratyek rang ko laal hara or neela in teen rango ke sanyogan se banaya ja sakta hai in teen rango ke vibhinn anupat mei prayog se vibhinn lakho rango ko utpann kiya ja sakta hai sobhagye se aese mulbhut phosphorus bhi uplabhd hai jo in teen aadhar rango ko utpann kar sakte hai atah taknik ke dwara inhe vibhinn sanyogano arthat combination mei asanyogit kiya ja sakta hai.

Colour display

Shedo mask vidhi

Beam penetration method

Rangeen chitro ko pradrshit karne ke liye random scan monitoirs beam penetration ka prayog karte hai is prakar ke monitirs mei prayog hone wali crt multilayer phosphor ka prayog karta hai isme crt par laal or hare phoshphur ki do layers ki coating ki jati hai jab ek kam gati wali beam crt ko strike karti hai toh kevel bahari laal rang ki bahari layer ko sakriye karti hai jabki teevr gati ki beam hare rang ki aantrik layer ko sakriye karti hai in gatiyo ke beech ki gati wali beams do anye rango narangi or peele rang pradan karti hai.

Colour display utpann karne ki is vidhi ka pramukh laabh yah hai ki yah khachili hoti hai parantu isse pradarshit hone wali images ki gunnvatta anye vidhi ki apeksha achi nahi hoti hai or yah vidhi kevel char rango laal hara narangi or peela ko pradarshit karne ki anumati pradan karti hai.