On 31.01.2017 09:51, Roman Rogóż wrote:
W dniu 2017-01-30 o 16:03, Gregoriusx pisze:
W dniu 2017-01-28 o 23:48, JaNus pisze:
(cross-post: pl.comp.pecet & pl.misc.elektronika )
- bo zdaje się, że niektórzy gracze już sobie odpuścili?
Walczą jeszcze:
HGST (Hitachi)
Seagate/Maxtor
Toshiba
WDC
Zawsze można spopularyzować "audiofilskie" podejście i wyższości zapisu
magnetycznego od flasha, a to stworzy rynek odbiorców o szczególnych
wymaganiach :)
Np. czarne skrzynki nadal zapisują na taśmach a nie na flashu
Pewien jesteś?
Otwieram taką wiki, a tam:
Other units used a single reel, with the tape spliced into a continuous
loop, much as in an 8-track cartridge. The tape would circulate and old
audio information would be overwritten every 30 minutes. Recovery of
sound from magnetic tape often proves difficult if the recorder is
recovered from water and its housing has been breached. Thus, the latest
designs employ solid-state memory and use digital recording techniques,
making them much more resistant to shock, vibration and moisture. With
the reduced power requirements of solid-state recorders, it is now
practical to incorporate a battery in the units, so that recording can
continue until flight termination, even if the aircraft electrical
system fails.
Otwieraam losowy link
http://www.newyorker.com/tech/elements/the-flight-data-recorders-slow-evolution
The most recent revolution in black-box technology came in 1990, with
the introduction of a Solid State flight-data recorder that could record
hundreds of parameters more than magnetic tape could handle. This
innovation was followed, two years later, by the first Solid State
cockpit voice recorder, but it wasn’t until 1995 that the memory of the
cockpit voice recorder reached its current capacity of two hours.
Tu solid state pojawia sie kilka razy:
https://www.bea.aero/uploads/tx_scalaetudessecurite/use.of.fdr_01.pdf
Obstawiam, zę używają, bo mają zapasy/jak działa, to po co wymieniać
/nowa skrzynka kosztuje, a nie dlatego, że taśmowe mają jakąś przewagę.
pzdr
bartekltg
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