Philips F21RE, Руководство по обслуживанию

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Circuit Descriptions, List of Abbreviations, and IC Data Sheets
EN 99 F21RE AB 9.
9.5.2 Audio path
Front audio inputs (SNDL/R_FRONT) are connected to the
TEA6422 (item 7810) on the AV-Interface.
The headphone output signal (DS_AUDIO_L/R) from the DW
module is routed to the front panel.
9.6 Auto TV
The Auto Picture Control (or AutoTV) aims at giving the
customer the best possible picture performance at any time.
Therefore, it does a real time processing of the video signal
and, as a result, it decides to adapt several video parameters
throughout the whole chassis. The user can choose the total
effect of the Auto Picture Control on the screen via the remote
control.
AutoTV consists of a set of algorithms that perform the
following tasks:
•
Auto Noise Reduction:
–
Input: noise measurement done in PICNIC.
– Output: noise reduction of PICNIC, coring of PICNIC,
TOPIC (if present), or EAGLE (if present).
• Auto Sharpness:
–
Input: steepness information and band energy in
PICNIC.
– Output: sharpness settings in PICNIC, TOPIC (if
present), or EAGLE module (if present).
• Auto Ambient Light (in combination with histogram):
–
Input: light sensor information (from TV monitor).
– Output: is depending on the user setting of Active
Control. If "maximum", saturation and contrast of the
HOP and histogram settings in PICNIC. If "medium",
only HOP saturation and PICNIC histogram.
• Auto colour:
–
Input: user smart mode choice.
– Output: colour features of the EAGLE (or TOPIC), like
green enhancement and skin tone correction.
The FTV E-Box has no own light sensor, instead they is
featured in the TV monitors. The E-box is involved in the image
control loop for these light sensors. The 42" F19D and 50”
FM25 monitor do not have a light sensor.
The user can select four different settings: OFF, MIN, MED and
MAX. The setting does not change the amount of the influence
of the algorithms on the screen, but partly switches algorithms
ON (see table below).
Table 9-5 Active Control settings
(*) In MEDIUM, the monitor contrast coupling of ambient is not
working.
(**) When the light sensor is not present, ambient light control
is not possible and the setting of the AutoTV button is limited to
OFF/ON.
(***) Independent of Active Control is OFF/MIN/MED/MAX.
Dependent of colour enhancement setting (in picture menu)
and smart picture mode.
9.7 Abbreviation list
ADC Analogue to Digital Converter
AM Amplitude Modulation
AP Asia Pacific
ATSC Advance Television Systems
Committee
AV External Audio/Video
AVI Audio and Video Interface
B/G Monochrome TV system. Sound
carrier distance is 5.5 MHz
BTSC Broadcast Television Standard
Committee. Multiplex FM stereo sound
system, originating from the USA and
used in LATAM and AP-NTSC
countries
CBA Circuit Board Assembly (Printed
Circuit Board)
ComPair Computer aided rePair
CSYNC Composite SYNC
CVBS Composite Video Blanking and
Synchronization
DAC Digital to Analogue Converter
D/K Monochrome TV system. Sound
carrier distance is 6.5 MHz
DFU Directions For Use: owner's manual
DNR Dynamic Noise Reduction
DRAM Dynamic RAM
DSP Digital Signal Processing
DTS Digital Theatre Sound
DVD Digital Video Disc
DW Double Window
E-box Electronic box (Receiver box)
EEPROM Electrically Erasable and
Programmable Read Only Memory
EU EUrope
EXT EXTernal (source); entering the set by
SCART or cinch (jack)
FALCONIC Field And Line CONverter IC
FBX Feature BoX
FLASH FLASH memory
FM Field Memory or Frequency
Modulation
FSP FTV System Protocol
FTV Flat TV (plasma screen)
HD High Definition
HFB Horizontal FlyBack
HP HeadPhone
I Monochrome TV system. Sound
carrier distance is 6.0 MHz
I2C Integrated IC bus
I2S Integrated IC Sound bus
IF Intermediate Frequency
Interlaced Scan mode where two fields are used
to form one frame. Each field contains
half the number of the total amount of
lines. The fields are written in "pairs",
causing line flicker.
IR Infra Red
IRQ Interrupt ReQuest
LATAM LATin AMerica
LED Light Emitting Diode
L/L' Monochrome TV system. Sound
carrier distance is 6.5 MHz. L' is Band
I, L is all bands except for Band I
LS LoudSpeaker
M/N Monochrome TV system. Sound
carrier distance is 4.5 MHz
MOSFET Metal Oxide Semiconductor Field
Effect Transistor
MPEG Motion Pictures Experts Group
NC Not Connected
Active Control OFF MIN MED MAX ON (**)
Auto Ambient off off on (*) on off
Auto Color (***) (***) (***) (***) (***)
Auto Histogram on on on on on
Auto Sharpness on on on on on
Auto Noise off on on on on