The 4 Camera DVR
or Digital Video Recorder takes video images from our
surveillance cameras, turns those video images into digital images, and then
stores this video footage on a digitally formatted drive. This is useful when
you need to store your video surveillance.
However, the DVR is really a DVMR or Digital Video Multiplex
Recorder with many simple features that can help you manage your video
surveillance recordings, so that you can find stored video, play it, and erase
it if and when you choose to. To simplify, lets call this the 4 Camera DVR and explain to you its
benefits.
The
DVR is the most efficient way to organize surveillance video footage, because it
lets you view what you want, when you want it. It even has a remote viewing
feature so that you can see your live or recorded video surveillance when you
are travelling or when away from your surveillance base of operations.
Understanding multiplexer technology within Digital
Video Recorders
When a Digital Video Recorder with Multiplexer functions is used,
the incoming video signal is encoded with temporal information. This information
can be assigned to any given number of incoming signals.
If
signals are inbound from 3 or 5 cameras, then the segments of video footage
arrive and are given time slot data, meaning information specific to the
location or 'slot' they arrived in, and then saved into memory as archived data.
Once saved, someone who wants to call up the information for specific time and
events from specific or general camera locations may do so and thus manage their
video surveillance recordings.
Impressive & Useful
Features
Video Motion Detection & Activation: The DVR
has a built in video motion detector that allows you to start recording video
footage when there is movement. So if you have a home or office with 4 or 16
rooms, and only 1 room encounters someone moving in it, than only the camera in
that particular room will trigger the recording feature on the DVR
system.
Video Output: The DVR also lets you watch the
events on all of the cameras connected to it in real time. That means that if
you want to check who is knocking at your front door while you want to watch who
is at your back door, your kids at home, your employees at the office, or your
customers in your retail store, you can see them all at the same time...live.
The DVR video output simply connects to a computer monitor or a video monitor in
order to show you the many different camera views that are actively
happening.
Remote Access: The DVR lets you watch video
footage from anywhere you can gain access to the internet with. You can watch
all cameras connected to the DVR, and you can even give other people permission
to remotely view the footage. This feature does not interfere with operation of
the system, so you may watch and record, and replay what you see simultaneously.
Large Video Storage Capacity: The DVR can hold up
to 800 Gigabytes of video footage. Bulk amounts of video surveillance can
accumulate in removable hard disk drives. You can purchase 250 GB or 320 GB hard
drives, giving you maximum video storage. The storage capacity can be
expanded without the need for formatting new drives. This is helpful when you
need to remove a storage drive and replace it without wasting time reformatting
drives to be congruent with the DVR system.
Other benefits that
make using a DVR for Video Surveillance
High Speed Review: The DVR lets you go to
specific times and dates of footage, giving you the ability to find video images
at a high speed, as opposed to rewinding or forwarding a magnetic video
cassette. You can also search for specific footage by looking at the footage of
separate cameras.
CD Burner: The DVR has a built in CD burner in
order to make copies of video footage. You can make copies of stored video
footage, and play them on a desktop or laptop computer. This is very helpful
when you want to show someone evidence or proof that an event happened by
bringing them the proof to view at their location. This is also an effective
when making a back up of video surveillance recordings.
Time & Date Stamp: In order to be admitted as
evidence, most judicial courts require that video surveillance contain a time
and date stamp. Therefore, it can be acknowledged that an event or action did
occur at a specific time.
Central Monitoring Center: The DVR is
capable of networking with up to 300 systems, used by casinos, airports,
maritime security installations, hotels, buildings, and outdoor camera
configurations. This feature lets you connect extended volumes of cameras to
inter-connected DVRs in order to set up a focal point for viewing and recording
all video surveillance imagery.
Reliability: People use our DVR because it
works similar to a computer but is not a computer. It will never freeze or crash
like a computer operating system, nor is it susceptible
to a computer virus attack even if it is part of your home or office
network.
Quality: With traditional VCR or Mini DV
tape recorders, the operator has to replace cassette tapes after time or the
quality would degrade. The DVR does not need someone to replace the recording
medium, namely, the hard disk drives that store the video imagery.
Q: How long can this DVR record for?
A: All of our DVR's recording times vary from 4 - 5 days to 4 - 5 weeks long,
all depending upon how the DVR is set or configured. (see the explanations below
to better understand DVR recording times)
Q: Is it easy to set or configure a DVR?
A: Yes, it is very easy to set the DVR. The reason why people may be
apprehensive about buying a Digital Video Recorder is because it appears
complicated, unlike a simple looking VHS Recorder with 6 or 7 buttons. A DVR has
many buttons, many features, yet a DVR is not really difficult. All you need to
program one is a few minutes to read some basic instructions, and a little bit
of practice.
DVR Recording Time Explanations
The following
explanations shows you the many factors involved in determining how long your
Digital Video Recorder will record for. Once you take each factor into account,
you can get the most recording time you choose to get.
1) Quantity of Cameras
If you hook up 1 or 2 cameras to your DVR, you will take up very little
resources of the recording space in the hard drive of the DVR and be able to
record for a very long time. If you connect 4 or 8 or 16 cameras, you will have
less recording space available for the DVR to utilize and reduce the amount of
time you can record for. However, you can always increase your recording
capabilities by purchasing an additional hard drive to operate inside your DVR,
a feature we are proud to offer.
2) Motion Activation Setting
If you set your DVR to begin recording upon the detection of motion (such as
a person coming into a room, or a door opening), then you will increase the
recording space, giving you lots of time to record for. If you do not use the
Motion Activation Setting, and you have the DVR in a continuous recording mode,
you will decrease your recording time. Our Digital Video Recorders Motion
Activation Setting helps eliminate constant recording of an area that may or may
not have any activity to capture.
In addition to Motion Activation Settings, our DVR has 'predictive' and
'intermediate' frames technology. One way to save recording space is for our DVR
to 'recognize' certain patterns and predict the actions based on analyzing an
environment over time, then determining if any new stimulus (such as motion)
should activate the DVR's recording mechanism. This comes in handy when a video
surveillance camera is monitoring a hallway or doorway that rarely has activity,
helping to conserve video recording time.
3) Resolution & Frame Rate
If you set the DVR to capture video surveillance at a high quality image
level, then the DVR will have less recording time available. An example might be
the desire to have the DVR capture the color of a person's eyes. If you slightly
reduce the Resolution or image detail of the DVR, then you will have more
recording time available.
The DVR resolution setting operates by increasing or decreasing the amount of
video images it saves to memory. If you choose to record at a high resolution
setting, you will capture and commit to electronic memory more details of more
'frames' or pictures of moving images then you would at a lower resolution.
Because you capture more at higher resolution, you are left with less 'recording
volume' to store video on. However, our DVR is able to still capture fairly high
quality image details without sacrificing too much recording space.
Additional Questions and Answers explained:
Q: How does a Spyzone DVR work?
A: Our DVR takes raw, composite video signals from our Spy Cam ™
surveillance cameras and encodes that video by compressing it into a digital
mpeg 4 algorithm. Once this signal has been digitally converted, it is then
stored onto a hard drive disk along with additional data, such as time, date,
indexing (enhances search features when looking for specific segments over
hundreds of hours of video footage), predictive and intermediate frames, color
temperature, etc.
Q: How does Predictive Framing work, and is it used only for commercial
environments?
A: Predictive Framing takes an image and records all of the details
about that image, then compares this archetype or outline to the daily patterns
in an encoded format. Then it records primarily the differences or variations in
activity. This alleviates congestion of a hard drive(s) with redundant
information, and overall, increases the recording time of the DVR.
As for who uses Predictivate Framing, most users are commercial users but . .
. homeowners who have areas that are off limits tend to appreciate Predictive
Framing. This technology saves recording space, as well as viewing time during
playback.
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