Philips EL1.1U Service Manual page 129

Circuit Descriptions, Abbreviation List, and IC Data Sheets
I Monochrome TV system. Sound
carrier distance is 6.0 MHz
2
I C Integrated IC bus
2
I D Integrated IC Data bus
2
I S Integrated IC Sound bus
IB In Band channel
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
ITU-656 The ITU Radio communication Sector
(ITU-R) is a standards body
subcommittee of the International
Telecommunication Union relating to
radio communication. ITU-656 (a.k.a.
SDI), is a digitized video format used
for broadcast grade video.
Uncompressed digital component or
digital composite signals can be used.
The SDI signal is self-synchronizing,
uses 8 bit or 10 bit data words, and has
a maximum data rate of 270 Mbit/s,
with a minimum bandwidth of 135
MHz.
ITV Institutional TeleVision; TV sets for
hotels, hospitals etc.
JOP Jaguar Output Processor
LS Last Status; The settings last chosen
by the customer and read and stored
in RAM or in the NVM. They are called
at start-up of the set to configure it
according to the customer's
preferences
LATAM Latin America
LCD Liquid Crystal Display
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
LORE LOcal REgression approximation
noise reduction
LPL LG.Philips LCD (supplier)
LS Loudspeaker
LVDS Low Voltage Differential Signalling
Mbps Mega bits per second
M/N Monochrome TV system. Sound
carrier distance is 4.5 MHz
MOP Matrix Output Processor
MOSFET Metal Oxide Silicon Field Effect
Transistor, switching device
MPEG Motion Pictures Experts Group
MPIF Multi Platform InterFace
MUTE MUTE Line
NC Not Connected
NICAM Near Instantaneous Compounded
Audio Multiplexing. This is a digital
sound system, mainly used in Europe.
NTC Negative Temperature Coefficient,
non-linear resistor
NTSC National Television Standard
Committee. Color system mainly used
in North America and Japan. Color
carrier NTSC M/N= 3.579545 MHz,
NTSC 4.43= 4.433619 MHz (this is a
VCR norm, it is not transmitted off-air)
NVM Non-Volatile Memory: IC containing
TV related data such as alignments
O/C Open Circuit
OOB Out Of Band channel
OSD On Screen Display
EL1.1U
OTC On screen display Teletext and
Control; also called Artistic (SAA5800)
P50 Project 50: communication protocol
between TV and peripherals
PAL Phase Alternating Line. Color system
mainly used in West Europe (color
carrier= 4.433619 MHz) and South
America (color carrier PAL M=
3.575612 MHz and PAL N= 3.582056
MHz)
PCB Printed Circuit Board (same as
"PWB")
PCM Pulse Code Modulation
PCMCIA Personal Computer Memory Card
International Association
PDP Plasma Display Panel
PFC Power Factor Corrector (or Pre-
conditioner)
PIP Picture In Picture
PLL Phase Locked Loop. Used for e.g.
FST tuning systems. The customer
can give directly the desired frequency
POD Point Of Deployment: A removable
CAM module, implementing the CA
system for a host (e.g. a TV-set)
POR Power On Reset, signal to reset the uP
Progressive Scan Scan mode where all scan lines are
displayed in one frame at the same
time, creating a double vertical
resolution.
PSIP Program and System Information
Protocol: A standard for (broadcast)
digital television. PSIP consists of
channel mapping data, program guide
data, information about closed
captions and content advisory ratings,
and other data related to the current
and future programs.
PTC Positive Temperature Coefficient,
non-linear resistor
PWB Printed Wiring Board (same as "PCB")
PWM Pulse Width Modulation
QAM Quadrature Amplitude Modulation;
modulation method
QTNR Quality Temporal Noise Reduction
QVCP Quality Video Composition Processor
RAM Random Access Memory
RGB Red, Green, and Blue. The primary
color signals for TV. By mixing levels
of R, G, and B, all colors (Y/C) are
reproduced.
RC Remote Control
RC5 / RC6 Signal protocol from the remote
control receiver
RESET RESET signal
ROM Read Only Memory
R-TXT Red TeleteXT
RRT This is one of the PSIP tables received
via an ATSC compliant transport
stream. In case of the OpenCable
compliant transport stream, RRT is
received via the out of band SI
SAM Service Alignment Mode
S/C Short Circuit
SCART Syndicat des Constructeurs
d'Appareils Radiorecepteurs et
Televisieurs
SCL Serial Clock I
SCL-F CLock Signal on Fast I
SD Standard Definition
SDA Serial Data I
SDA-F DAta Signal on Fast I
SDI Serial Digital Interface, see "ITU-656"
SDRAM Synchronous DRAM
9. EN 129
2
C
2
C bus
2
C
2
C bus