RECORD1

Cam5.gif (886 bytes) cam5r.gif (881 bytes)

ptz1l.jpg (7969 bytes) Logo1.jpg (23753 bytes) PTZ1.jpg (7743 bytes)

Cam3.gif (861 bytes) Dome2.gif (2422 bytes) Cam4.gif (592 bytes) Cam1.gif (928 bytes)

ANALOG RECORDING

svtl200.gif (6211 bytes) svtl400.gif (9122 bytes) svts3100.gif (8709 bytes)

These are typical Time-Lapse VCR's.

Many makes & models are available from 2 hour to 960 hour recording times.

But, a warning about Analog Recording!

Analog Vs. Digital Recording

Time lapse VCRs using VHS tape have been the key to video surveillance recording

for a very, very long time............Until now..................

Here are some of the key reasons to move from analog tape technology to computerized digital recording technology.

Time-Lapse VHS - (Analog)	Digital Recording
Slow image capture rates per camera in 24+ modes	Nothing to Store or manage
Must change, manage and store VHS tape daily	Individual camera control (Color, tint, bright etc.)
Search times extremely long and tedious	No daily labor or attention required to replace tape
No Remote Access	No tape to replace
VCR must be maintained frequently	Less moving parts to wear out, no scheduled maintenance
Multiplexer required to switch camera sources to VCR	Multiplexing function is built in
POS data is overlaid onto video	POS data goes to a searchable database, may trigger recording
Original tape is usually surrendered to authorities	Copy given to authorities, original remains on hard drive or CD-R and may be protected permanently.
Individual image may only be printed with a special video printer	Print images to any standard computer printer
Unstable playback of single or multiple images in all modes	View multiple cameras simultaneously, synchronize stored or live images, and view while recording, downloading or copying
Cannot search & playback while recording	View and record multiple sites & cameras simultaneously, locally or remotely
No searchable data	Search by time, date, alarm or transaction data.
Linear recording only

VHS Technology
In VHS applications cameras feed to a device called a multiplexer. The purpose of this device is to switch the VCR input from one camera to the next. The result is an analog tape with images constantly cycling between camera sources. This makes linear viewing of an individual camera virtually impossible (unless, of course, there is only one camera). Digital systems allow for clear & precise playback of a single camera or multiple cameras, even in pause/still and frame by frame. A major advance in video surveillance is the capture of point of sale (POS) transaction data. In VHS systems, an external unit in line between the multiplexer and the VCR overlays the data onto the video as text. This allows POS data to be seen with the video, albeit over top of the images. If a store monitor is used, it may be necessary to add a switcher to display multiple live cameras. DVR's record this data separately and can search this data for any requested information.