Today’s Digital Video Recorder or DVR security camera systems are an amazing bundle of new high quality technology. The security camera industry can also thank the personal computer industry as a contributor, because a lot of today’s DVR security camera systems use recently invented technology borrowed from the computer industry.
In this article we are going to describe how a typical DVR security camera system works.
Modern digital video security and surveillance systems are basically component systems. This means that essentially, the parts of the system are like plug n play items used in computers. All of the components do not have to be made by one manufacturer, they can differ in function and still work on the system, and they can usually be removed and replaced with something else and the system will continue to work.
This provides tremendous versatility in application because the DVR security camera systems are no longer required to use all of the same components. For example, an 8 channel system may have 6 bullet cameras and 2 Pan-Tilt-Zoom (PTZ) camera made by a totally different manufacturer.
Let’s take a closer look at how a DVR security camera system (and its individual components) works. The first component of the system is the camera. There are so many different type of cameras available today that we do not have the space for this article to cover them all. Instead, let look at how they work
DVR security cameras possess one primary function; transfer the reflecting light that is in its field of vision into electrical impulses that can be measured, manipulated, and compiled to create a digital video file. This information is then sent to the DVR and/or monitor for processing and viewing.
The camera does this by using one of two different electronic sensor chips called a Charged Coupled Device or CCD or a Complementary Metal Oxide Semiconductor or CMOS. Although both sensors work a little differently, the both yield the same end product–the electrical data that can be used to create a digital video file.
This is accomplished by the camera’s lens focusing the field of view onto one of these chips, which generally range from only 1/4″ to 1/2″ square. When the light strikes the sensor chip, small electrical impulses are created by the pixels in the chip. Each one can be measured and used to create the data that will be used to display the cameras field of view as a digital video.
At this point the signal is still an analog type signal. The camera sends this analog data through an analog-to-digital processor chip to convert the data into digital or binary format. The camera also contains a Digital Signal Processor or DSP chip that is used to make fine adjustments to the data. Once the digital information is ready it is sent via a video transmission cable or other means to the DVR, hence the name DVR security camera systems.
Once the signal reaches the DVR, it applies its own DSP technology along with a CODEC utility. Codec is an acronym for COmpression/DECompression. This utility program uses a special algorithm program that reduces the incredibly large file into just a fraction of its original size without sacrificing significant quality. Once this is accomplished the digital video file is compiled and is saved on the DVR’s hard disk drive and/or displayed on a system monitor.
It should be easy to see now why DVR security camera systems benefit from technological improvement in the computer world. Many PC based devices are used in security camera systems. For example, the DVR saves the digital video file to its hard disk drive for storage. USB Thumb drives can be used to update firmware and copy and transfer video footage. DSP and memory chips are directly related to the computer industry.
Even the monitors used today are basically the same as computer monitors but they may include a few extra input options. Monitors have gone from the bulky Cathode Ray Tube (CRT) type to the LCD type just like most computer monitors.
Security Camera King offers a wide selection of DVR security camera systems with everything you need to install it but the tools. Try one of our systems, the Elite Mini Economy, the Elite Mini HD, the Elite Series, or the Ultimate Series and see for yourself. The majority of our cameras come with a 1 year full warranty (some models have 2 years) and our DVRS have a 3 year warranty.
DVR Security Camera Systems Can Really Make Loading Video Easy
For some of the clearest playbacks as well as ease in finding what you are looking for on a surveillance video, DVR security camera systems offer the best. Depending on your individual needs, using multiplexing components, there is really no limit to the number of cameras that can be connected and finding the video from an individual camera is fairly simple, provided you have the right identification process set up in your computer.
Cameras are fed into a multiplexing system that is connected through DVR security camera systems and played back through your home computer. The computer can be readily used for other functions as the cameras record onto the hard drives, which are part of the DVR security camera systems. In most systems, at least two hard drives are installed in each of the units, with a capacity of about 300 gigabytes, for a total of 600, and can be set up to start recording over existing video when the drives are full.
Once hooked up and configured for your computer, playing back a recorded video is quick and easy. Simple choose the device and the individual camera, establish the time of the recorded video you want to view and choose play. The software used for DVR security camera systems should also allow for speeding through a video, going through a scene in slow motion or only viewing sections of the video in which activity has been recorded.
Save Video Clips For Future Use
In the event something illegal took place on the property, once the activity has been located, it can be saved to the computer’s hard drive or to a compact disk for sharing with the authorities or with the court. The images from DVR security camera systems are excellent when compared to those from a videocassette recorder and from the image on the computer, still photographs can be printed in full color.
While viewing the images on the computer screen, depending on the number of cameras connected to the system, the choice can be made for one and up to 16 cameras to be viewed simultaneously. When viewing and saving images from DVR security camera systems, it is possible to split the screen to show separate images at the same time and transfer those images for use in legal action later.
One issue with DVR security camera systems, some courts will require documentation to prove there was no digital enhancement performed to the digital images. Saving a copy on the computer as well as copying to a DVD can often deter any question about the validity of the image.
CCTV DVR Security Camera Blog: Keep Your Construction Site Safe with Security Cameras
If you work in the construction business, you know theft can be a problem. it is estimated that nearly one billion dollars worth of construction equipment and materials is stolen each year. without taking proper security measures, this number will continue to rise. Losing materials and equipment can delay your project, raise your insurance rates, and ruin your company’s reputation. Fortunately, there is something you can do help protect your business: Construction Site Security Cameras.
Construction Site surveillance is a great option for resolving a number of issues, including theft and vandalism. In the long run, it can save you time and money, and make your company even more efficient. if your construction sites often fall victim to theft or vandalism, a security camera can help you catch the criminals who are causing you harm, as well as offer an idea as to how they are gaining access to your site and what you can do to stop this from happening again in the future. Not only that, but having cameras in place, constantly monitoring what’s going on at your construction site can help settle disputes, monitor employees, and be used as the perfect witness in the event you find yourself in legal trouble.
If you’ve decided to purchase or install a video surveillance system, there are some things you should keep in mind. Here is a quick checklist for you to think about before making your purchase or having your cameras installed.
1. consider a weatherproof security camera. Cameras that are keeping watch over construction sites are often placed outdoors. Rain, hail, wind, lightning and other damaging weather can do a number on your cameras if you choose the wrong type.
2. Keep cameras out of areas that could be damage by your machinery. Cameras are pretty resilient but they are no match for a bulldozer or other heavy equipment. make sure you cameras are placed in areas where your machinery won’t cause them any harm.
3. place cameras in areas that are most vulnerable to crime. Do you have a certain area at your site that has suffered from vandalism or theft in the past? is there an area that is vulnerable due to its location or openness? You’ll want to consider putting cameras in these areas first.
4. was there ever an incident that wasn’t necessarily criminal but that you wish you could have caught on video? maybe you had employees goofing off, maybe you had an inspector lie about something he or she saw. consider these areas to be a high priority for placing cameras.
5. Do you already have some type of security? maybe actual security personnel or some type of fence that would be nearly impossible for a criminal to get past. if so, these areas may not be first on your list to receive camera placements.
6. Do you leave supplies that would be easy to steal unattended overnight? if so, these supplies need to be monitored. Lumber, steel, and other raw materials can be very expensive to replace and can seriously delay your project.
7. what type of area is your construction site located in? is it in a small rural residential area or a large suburban area? be aware of the crime rates in your area. if your construction site is in a note so nice part of town, consider placing cameras around the entire perimeter to detect any and all intruders.
DVR Hidden Security Camera, for the safety of our home
Our world is going through a period of greater than before mistrust because of the various despicable activities like bombings, drug peddling, illegal trafficking, misuse of public funds etc. and their consequences. These curses to the society are also the main reason why dvr hidden security camera have become so much more important in our times. The use of security cameras has increased tremendously.
This equipment is also known commonly as CCTV camera or closed circuit television. It has a great role to play in crime investigation. CCTV cameras are used for this function. They are capable of producing pictures or recordings for surveillance purposes, and can be either film cameras, or still cameras.
Dvr Security camera system is the intentional use of video cameras, which are usually hidden. In recent times, obscured security cameras are regularly used for keeping a close watch on regions, such as airports, banks, casinos, military areas, and grocery stores which call for supervision against attacks of many kinds. Simple to install and use, a dvr security camera is now usual amongst homes and businesses. The security and insurance benefits are invaluable.
Hidden dvr security cameras are not just used by undercover agencies. With technology moving forward, these tiny defense devices have become reasonably priced and available everywhere. They are now being expansively used as security camera systems to keep a watch over one's home or personal belongings. They are very widely used as baby monitors, to watch over the children when you are away from home and the kids are with the babysitter.
Business owners feel safer knowing that if any unpleasant activities were to happen in their office buildings or homes, then they could turn to their dvr security cameras and discover precisely what went on. Employees in an organization would feel safer knowing that theft prevention devices are protecting their place of work. Not everyone can meet the expense of a security guard, but a security camera system can be modified to fit everyone's budget.
Investigations have shown that these CCTV camera systems installed in areas vulnerable to crime led to a large reduction in crime rates. The cameras are tiny but their presence is potent. Not only do they reduce crime, but through that crime reduction, customers and neighbors feel safer as well.
The utilization of CCTV is exceptionally regular in banks and stores to check burglary, by recording evidence of criminal activity. In today's times, the scrutiny of public places and crowded regions is extremely indispensable. Furthermore, in factories and industries where workers work with dangerous material and risky machines, keeping a watch over the area is necessary to make help available speedily in case of a hazard.
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