Circuit Operating Descriptions
7-39
7-9 OSD
The on screen display circuit consist of a character generator decoder, video mixer, sync separator and sync gener-
ator, sync detector circuit.
The data is decoded and generates characters in syncro with composite video signal applied pin 19.
Also the sync detector circuit discriminates the presence of a video signal by detecting sync, if no sync is detected,
a blue screen is displayed. In other word, the OSD circuit displays character on the video when there is a video
signal or on blue screen when there is no video signal. (No sync).
21
2
CVin
2fsc
4 fsc
oscilator
Sync signal
generator
H
Background
video signal
CVout
Blue Background
Super impose
Dot display
control
Charater data
ROM
(128 charaters)
Control circuits
(display position.
blinking. etc.)
registers
On-screen display
RAM
H/V
seperation
Display data
readout
control
V
Sync-tip
clamp
6
7
CVin2
19
24
C-Sync Slice
Fig. 7-35 Block Diagram
Summary of Contents for SV-DVD50
Page 26: ...Exploded View and Parts List 3 10 Samsung Electronics MEMO ...
Page 88: ...VCR Deck Operating Description 8 12 Samsung Electronics Fig 8 14 Mecha Timing Chart ...
Page 102: ...VCR Deck Operating Description 8 26 Samsung Electronics MEMO ...
Page 109: ...Circuit Operating Descriptions 7 7 Fig 7 12 Block Diagram ...
Page 143: ...Circuit Operating Descriptions 7 41 3 Block Diagram Fig 7 38 LA70100M Block Diagram ...
Page 158: ...Block Diagram 10 2 Samsung Electronics MEMO ...
Page 159: ...Samsung Electronics 11 1 11 Wiring Diagram ...
Page 160: ...Block Diagram 11 2 Samsung Electronics MEMO ...
Page 162: ...Schematic Diagrams 12 2 Samsung Electronics 6 1 S M P S ...
Page 163: ...Schematic Diagrams Samsung Electronics 12 3 6 2 Power Drive ...
Page 164: ...Schematic Diagrams 12 4 Samsung Electronics DT701 6 3 Display Function ...
Page 165: ...Schematic Diagrams Samsung Electronics 12 5 6 4 System Control Servo ...
Page 166: ...Schematic Diagrams 12 6 Samsung Electronics 6 5 A V ...
Page 167: ...Schematic Diagrams Samsung Electronics 12 7 6 6 Hi Fi ...
Page 168: ...Schematic Diagrams 12 8 Samsung Electronics 6 7 A2 NICAM ...
Page 169: ...Schematic Diagrams Samsung Electronics 12 9 6 8 SECAM Option ...
Page 170: ...Schematic Diagrams 12 10 Samsung Electronics 6 9 OSD VPS PDC ...
Page 171: ...Schematic Diagrams Samsung Electronics 12 11 6 10 TM ...
Page 172: ...Schematic Diagrams 12 12 Samsung Electronics 6 11 Input Output ...
Page 173: ...Schematic Diagrams Samsung Electronics 12 13 6 12 DVD AV Decoder ...
Page 174: ...Schematic Diagrams 12 14 Samsung Electronics 6 13 DVD Servo ...
Page 175: ...Schematic Diagrams Samsung Electronics 12 15 6 14 DVD Audio Video ...
Page 176: ...Schematic Diagrams 12 16 Samsung Electronics MEMO ...
