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INTERACTIVE TELIVISION.

The  future  of  the  television  is  undoubtedly   digital .Television or video   signals  can  be   converted  from  their   normal  analogue  form  (continuously  varying )   into a  digital   form .Which  consists  of  a  series   of definite   pulses  rather  than  Morse   code  .Digital  signals   can  be transmitted  ,compressed,and  manipulated  by  computers  without  any " noise"affecting  the   data  .One  of  the  advantages    of   digital  technology  is   that   video  data  can  be  manipulated  to  make  interactive  television  possible.Interactive "  video on  demand  "(VOD) service  allow   users  to  watch  the  material  of  their  choice   from  a  large   central  video    vault .A  digital  server     enables   many  users  to  watch  the  same  film.Starting  at  different  times,by  sending  the video   data  in  small  " packets".to  them.Other  service  include  news programmes  ,games,music, and electronic shopping.With   the  latter  the  user  "scrolls" through  a  virtual   shop. and  uses  a  credit card to  buy  items.Which  are  then  delivered   to  the  home  within  days.
CINEMA  BY  COMPUTER.
Disney  productions'  toy story (1995)was  the  world's  first   feature  film   to  be generated  entirely  on   computer.A  team  of 27  animators  worked  on  the  film .producing  an average  of  31/2minutes  of  footage    per  week .Some    of  the  characters  and scenes  were   created   solely  on  computer,where  as  others  were  set up     with  models.
INTERACTIVE  TELEVISION




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