Circuit Descriptions and Abbreviation List
EN 118
9.
9.2
Block Diagram
Figure 9-1 Block diagram
The Tuner/splitter (item 1200) is a PLL tuner and delivers the
IF-signal, via audio and video SAW-filters, to the HIP (High-end
Input Processor.) The HIP has the following functions:
•
IF modulation.
•
Video source select and record select.
•
Color decoder.
•
Synchronization.
Seven video input/output connections (with audio connections)
are available:
1.
Front: interfaces CVBS, SVSH.
2.
AV1: interfaces CVBS, RGB- and YUV-input (1fH)
3.
AV2: interfaces CVBS and Y/C (meant for VCR-
connection.)
4.
AV3+AV4: interfaces YPbPr/RGB (HD) inputs (2fH.)
5.
Monitor out: interfaces CVBS out.
6.
Audio out: interfaces external front and surround speakers.
The HIP delivers YUV and sync signals to the PICNIC. This IC
takes care of:
•
Analog to Digital conversion and vice versa.
•
60Hz interlaced to 60Hz progressive scan conversion.
•
Panorama mode.
•
Noise reduction.
•
Dynamic contrast.
The '2fH features'-block in the diagram gives several options:
•
For Digital Scan, the PICNIC is required.
•
For Natural Motion, the FALCONIC is required.
•
For Pixel Plus, the EAGLE is required.
After the PICNIC, the YUV-signals are fed to the FALCONIC for
'Natural Motion,' followed by the Eagle for 'Pixel Plus'
enhancement (if present.) The processed YUV signals (from
Eagle or PICNIC) are, together with the sync-signals from the
PICNIC, then fed to the HOP (High-end Output Processor.)
This IC handles the video control and geometry part. The RGB-
signals for CC/OSD (from the
µ
P) are also inserted via the
HOP. The video part delivers the RGB signals to the CRT-
panel and the geometry part delivers the H-drive, V-drive, E/W-
drive, and TILT-drive signals.
Both deflection circuits are 'hot' and located on the LSP. The
HOP drives them. To make a galvanic separation, the Line
Drive is driven via transformer 5410 and the Frame Drive via
transformer 5621.The horizontal output stage generates some
supply voltages and the EHT voltage, focus voltage and Vg2
voltage.
VERT
HORZ
ROTATION
CRT
AUTO
SCAVEM
SCAVEM
R
G
B
TDA933X
HIP
YUV
H
A
/V
A
IF
FILTER
TUNER
PIP/DW MODULE
EXT
I/O
HD
JACK
TOP
CNTRL
KEYBRD
TDA932X
SAA4978
SAA4992
T8F24EF
SAW
COMB
FILTER
TUNER
PIP/DW
UV13XX
F-TYPE
PICNIC
RGB
TILT
COLD
HOT
HFB
FRAMEDRIVE-
FRA
CVBS-TXT
VIF
IF
E/W
H
D
E/W
FLASH
RAM (EPG)
NVM
(PROGRAM)
DRAM
(TXT)
FLASH
RAM (SW)
OTC
(
µ
P)
SAA5801
MSP
MSP34XX
TDA7490
IF
FILTER
DW
PROC.
VIF YUV
FBL
SIF
BOCMA
VIDEO
AUDIO
IR
RECEIVER
SUPPLY
VBAT (141V)
VSOUND (+/-16V)
EHT
180V
VTUN
+11V
+8V
+5V
+5V2 STANDBY
SIF
AUDIO-PIP
TDA7490
NJM4556
L/R
HP
L/R
HP
SW/C
RGB-TXT
HFB
V
SYNC
V
SYNC
HOP
MAINS 110V
CL 26532058_018.eps
050602
FALCONIC
FM
FM
FM
5
2
FM
1
3
FM
4
EAGLE
TDA9178
YUV
OUT
YUV50
H
D100
/V
D100
YUV_EAGLE
OUT
TOPIC
*
*
*
*
DASHED ITEMS
ARE ONLY PRESENT
IN SETS WITHOUT "EAGLE"
LOW
POWER
STBY
POWER
ON/OFF
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