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Circuit Descriptions, Abbreviation List, and IC Data Sheets

EN 147

FTL13U AA & AB

needed.

Remark:

Enabling the comb filter does not necessarily

mean that the signals will be combed.

•

The comb filter must be disabled in case of RGB and for
YPbPr-1fH, to avoid big horizontal shifts of the picture
caused by the comb filter processing.

•

The comb filter is also disabled at very low quality antenna
signals for AP due to vertical instability/scrolling effects.

Auto TV

The Auto Picture Control or in short AutoTV, aims at providing
the customer the best possible picture performance at any
time. Therefore, it performs real time processing of the video
signal and with this information, it decides to adapt several
video parameters throughout the whole chassis. The total
effect of Auto Picture Control on the screen can be selected by
the use of the remote control. The commercial name for the
feature is "Active Control".

The sets have three digital options: Progressive Scan, Pixel
Plus, and Movie Plus. The Progressive Scan mode has no
Pixel Plus enhancement. For 2fH inputs, only Progressive
Scan or Pixel Plus mode can be selected. For 3fH inputs no
digital options are available.
The aim of Movie Plus mode is to reduce the Halo artifacts
(halo's are artifacts introduced with the Natural Motion feature).
However, reducing halo's will result in motion judder. This is
then compensated by the FBX software.

The basic component for Auto TV is the FBX. It measures the
picture content and it has the most video control parameters on
board, like peaking, coring, DNR, and so on. With the presence
of the Eagle, additionally the color enhancement functions and
the LTI are controlled. Also, the light sensor, needed for
ambient light control, is supported via the OTC. Finally, vertical
peaking is mostly done in the Eagle, a little in the PICNIC, and
the motion compensation and DNR are done in the
FALCONIC.

Note:

See the R8 manual for a more detailed description.

9.6

Audio

9.6.1

Audio decoding

The audio decoder used for the USA is the ITT MSP3421 (item
7A02). It also decodes AM and NICAM signals.

9.6.2

Audio source selecting

Figure 9-10 Audio block diagram

The MSP covers a SIF (Sound Intermediate Frequency) input,
4 stereo inputs and one mono input. As this chassis needs
more inputs, a matrix IC (TEA6422D, item 7I17) is added. The
stereo inputs on this IC are:
•

AV1.

•

AV2.

•

AV3.

•

AV4 (YPbPr 1fH or 2fH/3fH).

•

Side I/O.

•

AV5 (DVI).

There are three separated outputs on the matrix IC, but only the
main output (MAIN_IN), going to the MSP, is used.

The MSP has the following inputs:
•

SIF input (this can be FM, AM, or NICAM).

•

MAIN_IN from matrix IC TEA6422D.

•

Center input.

An S/PDIF in/output is not foreseen.

9.6.3

Audio processing

All sets have an MSP3421, which can handle Virtual Dolby,
and has an output of 2 x 10 W_rms.

The following

outputs

are foreseen:

•

Monitor out: Front-end.

•

Headphone out.

9.6.4

Audio Amplifier Panel (Diagram A)

Introduction

Figure 9-11 Block diagram audio amplifier

This panel contains the audio filters and amplifiers necessary
for driving the speakers. The differential audio inputs (for
common mode immunity) come from the SSP (via connector
0388).
The PSU delivers the positive and negative supply voltage of
12 V_dc, as well as the +5V2 (standby) voltage.
After being filtered and amplified, the signals go to the speaker
section, where the (twin cone) low/mid range speakers and the
tweeters are driven (load impedance is 8 Ohm).

The headphone amplifier is a straightforward OpAmp amplifier
(IC7A07-A, MC33178D). It is supplied with +11V_AUD.