Circuit Descriptions and Abbreviation List
EN 140 EM5A P/M9.
• Most algorithms are located in the embedded processor of
the PICNIC, because of time-critical calculations, and
because most picture analysing and correction circuits are
present in the PICNIC. Some parts of the algorithms are
located in the main software, because the outcome needs
to be send to other I
2
C devices.
9.19.2 “Switch On” Behaviour
Below find the start up sequence:
1. After the power is applied, the Standby supply starts
oscillating, generating the +5V2 (and +3V3). A reset (POR)
is generated and the OTC is awakened.
2. Next step is the check whether the set needs to be in
“Standby” mode or not. Therefore, the NVM content is read
and the Standby-bit is checked. If the set is to stay in
Standby, there is no further action.
3. If the set will switches “on”, first the degaussing will be
activated (12 seconds).
4. Meanwhile the MSP is reset and the Standby line is pulled
low, leading to a full semi standby mode (5 V and 8V
switched on)
5. The OTC waits until the +5V and the +8 V are fully present.
This is done by checking the AD-input of the OTC. The
+5V, +8V, and I
2
C protection-algorithms are activated.
6. The HOP is instructed via the I
2
C-bus to start the drive.
7. Via the SUP-ENABLE signal, the main supply is activated.
The Line Deflection circuitry is supplied now with the V
BAT
,
and the EHT generation can start.
8. During start-up of the deflection, I
2
C traffic must be
disabled for 250 ms to avoid data corruption. If flashes or
spikes are generated during EHT start-up, I
2
C data could
be disturbed or corrupted.
9. After deflection is powered up completely, all the other
protection-algorithms are activated.
10. The black current stabilisation loop in the HOP is switched
on. Some extra checking is done to ensure that the loops
are completely stabilised.
11. The OTC sets all the necessary parameters for a correct
sound and image and unblanks the picture.
9.20 Abbreviation List
2DNR Spatial (2D) Noise Reduction
3DNR Temporal (3D) Noise Reduction
AARA Automatic Aspect Ratio Adaptation:
algorithm that adapts aspect ratio to
remove horizontal black bars; keeping
up the original aspect ratio
ACI Automatic Channel Installation:
algorithm that installs TV sets directly
from cable network by means of a
predefined TXT page
ADC Analogue to Digital Converter
AFC Automatic Frequency Control: control
signal used to tune to the correct
frequency
AGC Automatic Gain Control: algorithm that
controls the video input of the feature-
box
AM Amplitude Modulation
ANR Automatic Noise Reduction: one of the
algorithms of Auto TV
AR Aspect Ratio: 4 by 3 or 16 by 9
Artistic see OTC 2.5: main processor
ASF Auto Screen Fit: algorithm that adapts
aspect ratio to remove horizontal black
bars but without throwing away video
information
ATV See Auto TV
AUDIO_C Audio Centre
AUDIO_L Audio Left
AUDIO_R Audio Right
AUDIO_SL Audio Surround Left
AUDIO-SR Audio surround right
AUDIO_SW Audio Subwoofer
Auto TV A hardware and software control
system that measures picture content,
and adapts image parameters in a
dynamic way
BC-PROT Protection signal to the uP for a too
high Beam Current.
BG System B and G
BLC-INFO Black Current Info
B-SC1-IN Blue SCART1 in
B-SC2-IN Blue SCART2 in
B-TXT Blue teletext
CL Constant Level: audio output to
connect with an external amplifier
ComPair Computer aided rePair
CRT Cathode Ray Tube or picture tube
CSM Customer Service Mode
CTI Colour Transient Improvement:
manipulates steepness of chroma
transients
CVBS Composite Video Blanking and
Synchronisation
CVBS-TER CVBS terrestrial
DAC Digital to Analogue Converter
DBE Dynamic Bass Enhancement: extra
low frequency amplification
DC-filament Filament supply voltage
DFU Direction For Use: description for the
end user
DNR Digital Noise Reduction: noise
reduction feature of the box
DSP Digital Signal Processing
DST Dealer Service Tool: special remote
control designed for dealers to enter
e.g. service mode
DVD Digital Versatile Disc
DYN-FASE-COR Dynamic phase correction, to correct
the phase of the H-drive
Eagle Feature box IC performing peaking,
zooming and sub pixel LTI in both
horizontal and vertical direction, CTI
and other colour features
EHT Extra High Tension
EHT-INFO Extra High Tension information, used
for contrast reduction, vertical and
horizontal amplitude correction, beam
current protection, and flash detection.
EPG Electronic Program Guide: system
used by broadcasters to transmit TV
guide information (= NexTView)
EW East West, related to horizontal
deflection of the set
EW-DRIVE The drive signal for the EW-transistor
EXT External (source), entering the set via
SCART or via cinches
EMF Electro Magnetic Force
FALCONIC SAA4992H, feature box IC performing
Digital Natural Motion, 3DNR, and
vertical zoom and vertical peaking
FBL Fast Blanking: DC signal
accompanying RGB signals
FBL-PIP The fast blanking signal for PIP
FBL-TXT The fast blanking signal for TXT. It has
a higher priority than FBL-PIP
FBSCO Fixed Beam Current Switch Off, a 140
V dip detection to activate the black
switch off circuit
FBX Feature Box: part of small signal /
separate module which contains 100
Hz processing, extra featuring and
AutoTV algorithms (FBX6= based on
PICNIC, FBX7= based on PICNIC and
Eagle)
FDS Full Dual Screen
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