Hitachi 61HDX98B Manual page 8

BLOCK DIAGRAM EXPLANATION FRONT END
MPEG VIDEO DECODER, NTSC UPCONVER-
SION, OSD:
What ever signal is requested by the consumer as the
source for viewing is processed through this block and is
output to the YUV D/As.
YUV/DAs:
This block takes the digital signals provided to it and
converts them to an analog signal which is usable by the
signal processing circuits.
All signals are routed out through the line labeled 2.14
YUV/YIQ, (NTSC Signal up converted to 480P or 2.14
HYPBPR which is the HDTV output as 1080I.
MPEG/AC-3 AUDIO DECODER:
This block processes the audio component from the
ARM/TRANSPORT or the block A/Ds AUDIO, which
is the NTSC audio processed by the Pro Logic decoding
circuit, labeled as 5.1, (Front Left, Front Right, Center,
Rear Left and Rear Right + Sub Woofer audio also called
LFE. Then this block processes the signal and outputs all
audio to the Audio D/As.
AUDIO D/As:
This block is the Digital to Analog converter which con-
verts the digital audio signal sent to it by the ARM/
TRANSPORT block and converts it to a usable analog
signal to be processed by the audio output section.
The audio labeling is comprised of the following:
L/R = Audio Front Left and Right
LS/RS = Rear or Surround audio Left and Right
C/LFE = C for Center and LFE for Sub Woofer, also
called Low Frequency Effects.
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