Sony KD-34XBR2 Training Manual page 53

High Definition (HD) Video Path
A high definition signal can come from the DTV tuner in the QM board or externally from the TV' s rear video 5 or
video 6. See Figure 11-10 for signal flow to each board and Chart 11-5 for a video path list.
QM BD.
VIDEO
5,6
U BD.
Video 5 or 6 Input
Stage Board
Input U
Component B
Interface IC200
MID Processor QM
OSD QM
SW IC002 B
Y/C CRT Drive A
DTV
TUNER &
PROCESSOR
MID
PROCESS
COMPONENT
I/F
HD INPUTS
PASS-THROUGH
SERVICE MODE ENABLED
480p
720p
1080i
FIGURE 11-10 - HD VIDEO PATH
Chart 11-5 - High Definition Video Signal Path
Purpose
Input
Video buffer; H & V Sync
extraction
Signal determination
based upon sync freq.;
aspect ratio change; H
freq. change to 33.75kHz
Video buffer, User Menu
OSD
Video Pass through
Input = Component Video.
Output = RGB.
Adds Menu OSD from QM
board.
11. Video Process - HA-3 and RA-5A Chassis
OSD
IC002
SW.
HIGH DEF
B BD.
Stage Board
DTV Tuner QM
DTV QM
Process
MID QM
Processor
Combined with the Video 5 or 6 picture by the MID
Processor
50
HD
PIX
RGB OUT
TO C BD.
Y/C
CRT DRIVE
A BD.
8/30/01
10TVP12 1328
DTV Air Signal
Purpose
DTV Reception
Decodes one of 18 ATSC
formats. Input = Antenna
Outputs = component video.
Signal determination based
upon sync freq; aspect ratio
change; H freq. change to
33.75kHz. Combines pix.