LG 710B - Page 18

 
6IDEO0RE!MP#IRCUIT
4HISCIRCUITAMPLIFIESTHEANALOGVIDEOSIGNALFROM
^6TO^6)TISOPERATEDBYTAKINGTHECLAMP
2'"DRIVEANDCONTRASTSIGNALFROMTHE-)#/-
)#
6IDEO/UTPUT!MP#IRCUIT
4HISCIRCUITAMPLIFIESTHEVIDEOSIGNALWHICHCOMES
FROMTHEVIDEOPREAMPCIRCUITANDAMPLIFIEDITTO
APPLIEDTHE#$4CATHODE
6IDEO0ROCESSOR#IRCUIT
6IDEOPROCESSORCIRCUITCONSISTSOFTHEVIDEODRIVE
OUTPUTBLOCK4HEVIDEODRIVE)#)#RECEIVESTHE
VIDEOSIGNALFROM0#4HEGAINOFEACHCHANNELIS
CONTROLLEDBY-)#/-THROUGH))#
4HECUTOFFCIRCUITCOMPENSATEDIFFERENTVOLTAGEOF
EACHCHANNELBETWEENTHECATHODEANDTHE'OFTHE
#$4