Panasonic EURO 4 Chassis Technical Manual page 35

13.2. Teletext Processing Stage
General
As already briefly
microprocessor performs teletext processing as
well as Control processing. To perform teletext
processing the following elements are required:
:
Teletext (TTX), Video Programme Signal (VPS)
slicer used to extract the relevant information from the
video signal.
:
Acquisition stage
reception of both the Teletext (TTX) and Video
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mentioned earlier
allowing simultaneous
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Programme Signal (VPS). The VPS feature is not
used.
the
:
Display Timing which is used to ensure that the
text information is locked to the same timing as the
raster scan.
: Character ROM which provides the required
characters for display of text information on screen
:
Display Generator used to create the Text
display
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