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Track Format fe
DAT can record various kinds of information in addition to the
audio signal as illustrated below. Since the information, such
as sub-codes, are recorded in different areas, it does not
affect the audio signal, and enables post edit recording of the
data without erasing the audio signal.
Optional track 1
ete
———_—_______}—_
\BG
Marginal area
ub-code area 1
'ATF area 1
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jain area
2
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TF area 2
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Sub-code area 2
Margianl area
Optional track 2
Marginal area
located on the both margins of the tape for stable contact
between the tape and the rotating head. No data is recorded in
these areas.
Sub-code area 1 and 2
Sub-codes (start ID, skip ID, and program number) are
recorded in these areas. These data are recorded in two areas
to avoid burst error, and for easier access during high speed
search. The capacity of these areas is about four times of that
of a compact disc, and it contains many possibilities for the
future.
ATF (Automatic Track Finding/Following) area
1and2
The signal for tracking is recorded in these areas. It enables a
stable tracking performance of the rotating head.
Main area
The digital audio signal is recorded in this area. In addition to
the signal, Main IDs containing the data for sampling
frequency, parity bit, etc., are recorded together here.
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