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Circuit Operating Descriptions
13-39
Samsung Electronics
13-9 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. 13-35 Block Diagram
Summary of Contents for DVD-V5450
Page 23: ...Reference Information 14 12 Samsung Electronics Fig 14 14 Mecha Timing Chart Kaiser II ...
Page 37: ...Reference Information 14 26 Samsung Electronics MEMO ...
Page 49: ...Product Specification 2 12 Samsung Electronics MEMO ...
Page 109: ...Operating Instructions 12 60 Samsung Electronics MEMO ...
Page 237: ...Troubleshooting 5 34 Samsung Electronics MEMO ...
Page 247: ...Exploded View and Parts List 6 10 Samsung Electronics MEMO ...
Page 263: ...Block Diagram 8 2 MEMO Samsung Electronics ...
Page 265: ...PCB Diagrams 10 2 Samsung Electronics 10 1 VCR Main PCB COMPONENT SIDE ...
Page 266: ...PCB Diagrams 10 3 Samsung Electronics CONDUCTOR SIDE ...
Page 267: ...PCB Diagrams 10 4 Samsung Electronics 10 2 DVD Main PCB COMPONENT SIDE ...
Page 268: ...PCB Diagrams 10 5 Samsung Electronics CONDUCTOR SIDE ...
Page 270: ...9 1 9 Wiring Diagram Samsung Electronics ...
Page 271: ...Wiring Diagram 9 2 MEMO Samsung Electronics ...