Harman Kardon AVR80

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QX60 : LC74760-9004
OSD LSI
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20
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..... separator
SYNCDET 0
VCOJN 0
VCOouT □
FC 0
AMPJN 0
AMPouT □
SYNCIN 0
SEPc 0
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8-blt
latch
I I I
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and
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I I I I I I I
command
-
decoder
Horlzonul
Vert I cal Horlzont.11
Vert I cal Flashiniv
Display
RAM
character
character
d1splay
display reversal
contro I
wr I to
size s lze
position
position contro I
reg I ster
address
register reg I Ster
reg I ster
register register counter
I I I I
I
Fl ashing/
Horizontal Vert I cal Harlzon\11 Vertical
reversal
~Decoder~
Dispe.ly
s lze
s I ze
dot dot
contra I
-
RAM
counter counter counter counter
clrcul t
-11
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L
I I
~
Horlzont.t.l Ver\lcal
display display
position position
detection dl'tec'tlon
J_
I
r--
I
I
Char-act.er
Line
Decoder
control contra I
counter counter
I
I
I
~
Front
r
ROM
I I
I
I Timing
Synchronization
Character
output control
Shi ft
Conposlte
generator
signal generator
Background control
reg later
--
synchro-
Video output control
n I zet I on
s lgnal
~
separ-atOI"'
control
t
ts
ta
i,s
t
i7
t
t
i5
□ □
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HSYNCol!T VSYNCouT
41
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