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DVD START-UP PROGRAM FLOW CHART
data:Tm
D = 8cm
D = 12cm
NoDisc
Spindle Servo
Gain down
D-type = CD
D-type = DVD Dual
D-type = DVD
SGC
DVD Mode
SGC(Layer1)
data:pk1&pk2
pk2 > Th0
D-type = DVD Dual
Fofst Adj
DVD Mode
SGC(Layer0)
NO
Start
D-type :
Disc Type
D-type = DVD Single
1
Start
Vref
compensation
Kick
Spindle
pk0 > Th0
FG servo
500 rpm
CD Mode
DVD Mode
Fofst Adj
Fcs Aji
data:pk0
Fofst Adj
Fcs Adj
data:pk1 & pk2
one rev
not yet
done
data:Tm
Rising Time
Tm >Th1
Tm > Th2
Disc diameter identification
NO
NO
pk2 > pk1/3
pk0 > pk1
YES
NO
CD Mode
YES
YES
NO
YES
Th1=246 ms
Th : Time threshold
pk0 : S-Peak value
pk1 & pk2 : 1st & 2nd S-Peak value
YES
Th0 : Level threshold
Disc Type identification
NO
YES
1. Disc Identification
(This is a basic start-up program flow chart.)