Software Upgrading; Abbreviation List; Cycle Generator; Light Sensor - Philips 50pf9966 Service Manual

EN 112 9. FTP2.2U AA
All mentioned blocks (from "Cycle Generator" to "HSV-to-RGB
Converter" are implemented in the main software. Via I
RGB values are sent to the EPLD (where a selection is made
between "active" and "passive" mode) and again via I
Inverter board is addressed.
In "passive" mode, the RGB values from the "HSV-to-RGB
Converter" are used, while in "active" mode the picture content
is used to steer the ambient lights.

Cycle Generator

The Cycle Generator (for fade in/out) starts with a long press
on the "On/Off" button on the RC. It stops when the button is
released.

Light sensor

The light sensor influences the Brightness: when the room is
darker, the ambient light is reduced. The amount of dimming is
set according to an algorithm in the Auto TV software. In
"active" Ambient Light mode, the light sensor does not
influence the Brightness.
Ramp Up/down
The Brightness is changing with a speed from min. to max. in
2 s.
HSV to RGB converter.
The HSV (Hue, Saturation, Value) values are converted to
RGB values.
Outputs
The outputs are RGB values and can individually be
decreased.
The EPLD
In "passive" mode, the EPLD sends the info from the OTC
directly to the inverter board. In "active" mode, the EPLD
calculates the RGB values. Hue and Saturation are not
adjustable, Brightness is adjustable.
9.12.3 Inverter Board
This board is for Service a "Black Box". This means that it is not
repairable on component level, but if it is defect, the board must
be swapped. See the Spare Parts List for the order code.
Some specifications:
•
There are three inverters to drive the lamps, each inverter
drives the Left and Right lamp for one color.
•
DC-to-AC converter: 2.3 kV.
•
Able to drive Cold Cathode Fluorescent Lamps (CCFL).
There are two lamp units, three lamps (RGB) per unit= six
lamps.
•
The lamps are driven with Pulse Width Modulation (PWM).
•
The inverters and lamps are supplied with 12V from main
supply.

9.13 Software Upgrading

In this chassis, you can upgrade the Main software via
ComPair. This offers the possibility, to replace the entire SW
image without having to remove the flash-memory from its
socket. You can find more information on how this procedure
works in the ComPair file. It is possible that not all sets are
equipped with the hardware, needed to make software
upgrading possible.
To speed up the programming process, the firmware of the
ComPair interface can be upgraded. See Chapter "Service
Modes ..."; paragraph "ComPair" - "How To Order" for the order
number.
See the FTL13 manual for a (more) detailed description.
Circuit Descriptions, Abbreviation List, and IC Data Sheets

9.14 Abbreviation list

2
C, the
2
C the
1080i 1080 visible lines, interlaced
1080p 1080 visible lines, progressive scan
2CS 2 Carrier Sound
2DNR Spatial (2D) Noise Reduction
3DNR Temporal (3D) Noise Reduction
480i 480 visible lines, interlaced
480p 480 visible lines, progressive scan
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 channels
directly from a 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
B/G System B and G
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
CBA Circuit Board Assembly (or PWB, or
PCB)
ComPair Computer aided rePair
CSM Customer Service Mode
CTI Color 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
DFU Direction For Use: description for the
end user
DNR Digital Noise Reduction: noise
reduction feature of the box
DPL Dolby ProLogic
DSP Digital Signal Processing
DST Dealer Service Tool: special remote
control designed for dealers to enter
e.g. service mode
DVD Digital Versatile Disc
DVI Digital Visual Interface