Color Key Block Diagram - Samsung S3C2416 User Manual

LCD CONTROLLER
Window0
(Background)
Window1
(Foreground)
Window0
(Green)
Window1
(Red)
21-24
Mask bit of COLVAL to
compare with Window color
DIRCON
Compare
Figure 21-6. Color Key Block Diagram
Window1
(Blue)
Figure 21-7. Color Key Operations
COMPKEY
COLVAL Frame Buffer
R'G'B'
Selected
Window
Match with COLVAL :
Unmatched with CONVAL :
Window0
(Green)
COLVAL
(0Xff0000)
Key area: Match with COLVAL area
Non-Key area: Unmatched with COLVAL area
S3C2416X RISC MICROPROCESSOR
Unselected window
Selected window
Key
area
Non-Key
area
Window1
(Blue)