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Technical Information
Construction of the DAT cassette
Safety tab
Identification holes (x4)
Loading grip
Slider lock
Track Format
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
Marginal area
Sub-code area 1
ATF area 1
~
=
E
sod
;
oe)
IBG
Main area
=
Ro)
=
ATF area 2
3
Sub-code area 2
e
Marginal area
Optional track 2
Marginal area
ATF (Automatic Track Finding/Following) area 1 and 2
Located on the both margins of the tape for stable contact
The signal for tracking is recorded in these areas. It
between the tape and the rotating head. No data is
enables a stable tracking performance of the rotating head.
recorded in these areas.
Main area
Sub-code area 1 and 2
The digital audio signal is recorded in this area. In addition
Sub-codes (start ID, skip ID, and program number) are
to the signal, Main IDs containing the data for sampling
recorded in these areas. These data are recorded in two
frequency, parity bit, etc., are recorded together here.
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.
44
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