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ENGINEERING TIP #12 –
The quest for higher storage capacity
To increase storage capacity for a specific size of
cartridge and length of tape, a higher frequency signal
is required. Simply put, data needs to be more closely
together on a tape in order for it to become a higher
capacity media.
While conventional audio & video analog signals
are mostly low frequency waves, digital data signals
are much more precise and critical. Therefore advanced
technological innovations must be adopted in order to
create high capacity data media products.
The need to improve the intensity of a signal at
high frequency…
Generally, the playback signal at a low frequency
is “big”, whereas the playback signal at a
high frequency is “small”. (Please see the
diagram below)
High capacity media needs high frequency signals to
pack much more data into certain sizes of media. Therefore,
intensity of a signal must be improved to be sufficiently
“high” for a high frequency signal. To meet
this requirement, Sony has the technology to enhance
the intensity of a signal at high frequency.
A comparison…
The chart on the below clearly shows how much Sony
tape manages the intensity of signals as compared to
a reference tape around the high frequency area. (Chart
refers to DDS reference performance)
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