Sony CCTV Systems Catalog page 4

Time-lapse
Time-lapse
recording technologies
recording technologies
Hybrid Recording (HSR-1/2)
The Sony HSR-1/2 digital time-lapse recorder uses both a hard
disk drive (HDD) and a DV (digital video) tape drive for storage.
The image data is first recorded onto the HDD and is then
transferred to DV tape. This "hybrid" approach to recording has
two major advantages.
The first advantage is reduced maintenance. Because the
DV tape drive works only while recording the image data being
transferred from the HDD, the tape transport and heads are
stationary most of the time.
This significantly reduces the need for head maintenance.
The second advantage is multiple protection. In the unlikely
event that the DV tape drive fails, recording continues onto the
HDD. Conversely, if the HDD fails, recording continues on the
DV tape.
Reality Regenerator (R2)
(SVT-168/168E/40E/S480ES)
The Reality Regenerator improves on conventional sharpness
enhancing techniques that artificially increase the apparent
sharpness of edges but at the same time also increases noise -
a combination which can result in unnatural, noisy pictures.
The Reality Regenerator minimizes these side effects by
reproducing a video signal very similar to the original. This is
achieved by first detecting edge information in the playback
signal and separating it into three parts (right, left and center),
and then adding this new signal to the original playback signal.
The result is very little noise and more accurate picture
reproduction during playback.
RealAction Recording
(SVT-168E/40E/LC300/DL224/S480ES)
Five Sony time lapse VCRs feature RealAction high density
recording. For example, conventional time lapse VCRs record
only 5 fields per second in 24 hour recording mode. However,
Sony RealAction technology allows recording of 20 fields per
second - three times as much information. This recording
density ensures smooth, natural recording of even fast moving
objects.
RealAction recording 20 fields/sec.
Normal time-lapse recording 5 fields/sec.
DV Tape Drive
<HSR Recording Process>
Original picture
After recording and
playback under VHS format
Edge
becomes
fuzzy
INTRODUCTION
DV Signal Transfer
Hard Disk Drive
Restored
edge
Almost no noise
and natural
waveform
Conventional Sharpness control
Noise
throughout
picture
Artificial
enhancement
at edge
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