ViewLock
II PIR25 PIR100 TapeLock HindSight Portable CCTV
System
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ViewLock
Video Encryption System
> Line cut and rotate video scrambling with
user programmable encryption keys
> DC power consumption < 65 mA at 12
Volts DC
> Optimised for use with video surveillance links -
fast "lock-in" time, tolerant to noise & interference
> Rugged & weatherproof miniature
housings
> On screen display of status |
Microwave and cabled video surveillance links are insecure and are open
to the threat of interception. Viewlock safeguards the operational
integrity of such links, by scrambling the video during transmission,
making it impossible to intercept and decrypt the surveyed scene.
Viewlock II's advanced digital processing, coupled with the use of
multiple encryption keys, offers the the very best in security.
Viewlock II builds on over 5 years experience with the highly
successful Viewlock I range of video encryption systems. Viewlock II
improves on all the best features and functions of the original system
such as fast lock-in time, excellent picture quality, and in noise
performance whilst the size has been halved to a package of only 23 x
60 by 100 mm. Furthermore, current consumption has been dramatically
reduced and Viewlock II requires a mere 65 mA from a 12 Volt DC supply.
Viewlock II is able to offer such performance gains, at such low
current, by incorporating a dedicated chip (ASIC) to perform all the
scrambling functions. The use of an ASIC chip also improves security
and reliability as the system is highly integrated and fewer components
are required.
Viewlock II is now the worlds leading encryption system for the
protection of video transmissions by the police, military and
government security agencies.
Video scrambling
Viewlock II randomly cuts and rotates each active picture line,
offering a very high level of picture concealment and security whilst
maintaining link compatibility. Viewlock II even automatically
configures itself for 525 line NTSC or 625 line PAL operation and is
therefore compatible with almost any transmission system used
throughout the world.
Optimised for use with RF &
microwave links
Viewlock II has been optimised to operate with demanding transmission
systems such as RF & microwave video links. It has a very fast
"lock-in" time, excellent decoded picture quality and high tolerance to
multipath and noise. Indeed, robust in-field performance is a major
strength of the Viewlock II system and its operation is virtually
transparent to any link, resulting in little or no effect on range or
performance.
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Typical Viewlock Application
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Highly secure
Secure algorithms, seeded by an unreadable primary key, are used to
generate the cut and rotate sequences. Only if the primary keys match
will the decoder be able to decrypt the received video. Security may be
further enhanced by the addition of a user down-loadable 32 byte
secondary key set which is used to randomise the cut sequences even
more, to an incredible 10 ^1,850 possibilities.
Covert
installation
Viewlock II’s rugged construction, small dimensions and low DC power
requirement make the system ideal for covert installations.
Furthermore, its wide operating temperature range and weatherproofing
to IP65 specifications, means that permanent outdoor operation is not a
problem.
On
Screen Display
Viewlock II includes an on-screen-display as standard showing
information about the status of the link. The OSD shows "Secure" when
the link has been successfully encoded and decoded, and "Insecure" when
the video has not been scrambled. To aid fault finding and installation
Viewlock II also displays additional messages such as "No Link", when
there is no video at the input of the decoder, and "No Video" when the
encoder’s input is absent.
| Technical
Specification |
| Outline Specification: |
Dimension |
127 x 60 x 23 mm |
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Operating temperature range |
-10°C to + 70°C |
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Weight |
220g (approx) |
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DC power input |
6 to 17 V DC at <0.8
Watts
(eg < 65 mA at 12 V) |
| |
EMC compliance |
EN5502 Class A &
EN50082-1
FCC part 15B class A |
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| Video: |
Scrambling method |
Active line cut & rotate |
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Number of cut points |
256 |
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Video standards |
PAL & NTSC
525 & 625 lines
(auto switching) |
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Video input / output |
BNC 1 Vpp 75R |
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Digital sampling |
8 bits |
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Signal to noise |
> 55 dB weighted (> 60dB typ) |
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Differential gain |
< + 5 % |
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Differential phase |
< + 5 deg |
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Lock-in time |
< 0.25 sec (typical) |
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* Product specification may be subjected to change
without prior notice
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