Posts Tagged ‘ HDCVI’



The Science Behind HD-CVI

Written By:
Friday, April 4th, 2014

HD-CVI System

High Definition Composite Video Interface (HDCVI) is a brand new video transmission applied science in the CCTV world. This technology allows high definition video footage to be transmitted over coax cable at considerably longer distances than network based cameras. The overall cost of the HDCVI cameras are lower than most network cameras as well to further enhance their staying power.

The main feature that makes HDCVI cameras images so vibrant is the signal itself. The HDCVI technology modulates the image signal then transmits by using both base-band and quadrature amplitude modulation. Base-Band is a word that details signals that range of frequencies from zero hertz to a cut-off frequency or highest frequency signal. Digital base-band signal transfers the digital stream over baseband channels, normally an unfiltered wire such as coax.

Baseband Transmission

Quadrature amplitude modulation differs in implementation as QAM uses both analog and digital modulation. It can use either two analog signal messages or two digital streams. This is accomplished by modulating the amplitudes of the two carrier waves. QAM high efficiencies can be achieved by setting size limited by the noise for communication channels. Another way of describing QAM is the amplitude of the two carrier waves are 90 degrees out of phase with each other in quadrature. Making the way the signals are carried equivalently viewed as both while being phased modulated into a single carrier.

Quadrature

This new way to apply the science QAM effectively separates the brightness signal and hue to enhance image quality. Also the separation of the signals diminishes the cross talk or external radiation that interrupts the signal.

Currently the two camera types available are 1920H and 1280H which translates to 1080P and 720P respectively. These cameras are using a technology that is actually a group of technologies used as one called Auto Signal Compensation or ASC. A video signal such as the standard NTSC (National Television System Committee) has different synchronization pulses used for the receiver scan timing. The features of a waveform are in the details of the synchronization. Synchronization occurs in the video lines of the sequential scanning of horizontal lines starting in the upper left corner then going right until all lines are scanned. The operation will happen hundreds of times depending on how many TV lines. Once modifications of the horizontal sync are complete vertical synchronization waveforms are initiated. The actual shape of the wave form is affected in this application, ultimately giving an extremely vibrant color display. If you take the anti-interference ability of the HDSDI science and compare it with the HDCVI, the HDSDI is fairly poor when operating in a high frequency radiation areas. Radiation by definition is electric magnetic waves. This is considerably different than nuclear or thermal radiation. Electro-magnetic waves come from all electric devices. A standalone air-condition unit is a perfect example. The AC compressors inside puts off enough electromagnetic interference to scramble the video signals traveling down the coax cable should the lines be too close. By separating carrier waves and changing their shape the signal becomes resilient to interference.

Another aspect of the signal usage was a realization that other signals can be embedded in the blanking zone. Blanking interval was originally designed to blank out the receiver to allow time for retrace in the receiver.

It’s first implementation was the closed captioning system in TV for example.

Closed_Caption

We can now use the vertical blank for something else called two-way data communication. The end to end transmission can support features for PTZ control. Other non PTZ cameras that support RS485 control can be used. These cameras’ OSD menu can be accessed without having to run extra control wiring same as the PTZ. You will no longer have to pull extra cable for PTZ control either. Originally installers would use Cat5 cable to get around that old limitation on the analog systems. I would use a pair of wires for video. Another pair of wires for RS485 control. Then splice the remaining 2 pairs to have 2 wires for positive and 2 wires for negative on power supply. That is a nice little work around, but at long distances that does not work as single strand wire is not thick enough to carry the amps needed. With the new implementation of ASC it makes communication for control available.

HDCVI equipment is similar to HDSDI equipment in that you can you use RG6 or RG59 and not have any problems. You can use you standard connectors without any special requirements or the need to find obscure vendors for the connectors. Using standard cabling and connectors will allow for the same level of ease for installation as legacy CCTV cameras.

Comparing HDCVI to HDSDI both technologies can transmit an image at resolutions of 1080P and 720P. For distance of signal transmission the HDCVI has an enormous advantage over HDSDI. HDSDI can reach about 100 meters or 320 feet. HDCVI can transmit up to 500 meters or 1600 feet. To put those numbers into perspective HDSDI can have the camera at one end of a football field and the DVR at the other end. HDCVI can reach 5 times as far. If you have a huge piece of property you need to get High definition cameras HDCVI is the way to go. Of course keep in mind power for the cameras are subject to the same restrictions of older technologies when it comes to alternating or direct current electricity.

HDCVI technology uses a peer to peer type of transmission. This means there is a continuous transmission with no creation of packets such as in IP based cameras. IP cameras are subject to the normal rules of data transmission. That means packets are created then transmitted over the Ethernet cable. The packets need to arrive in the correct sequence and be spaced evenly apart.

Packets

Issues with network congestion, configuration mistakes, and improper queuing for the data stream will result in choppy and degraded video display. Those issues are inherent of an IP based system. There are extra steps an installer can take to reduce the jitter problem, but that takes advanced knowledge of the cameras themselves as well as advanced knowledge of networking in general.

To recap the HDCVI cameras do operate much better than IP camera systems or HDSDI systems. The HDCVI provide mega pixel quality like the HDSDI and IP cameras. They are not subject to the same outside interference the HDSDI devices are or IP systems. HDCVI have able to go 5 times the distance for video transmission than HDSDI or IP. The new technology is as simple to use as legacy equipment is. Lastly you get Mega pixel quality at analog camera prices.

If you would like to know more about HDCVI, how it compares to IP and Analog and how to connect the system together, check out our What is HD-CVI page.

facebooktwittergoogle_plusredditpinterestlinkedintumblrmail

i-502 Security Camera Law – Why this Marijuana Law is Necessary and How it Protects Your Investment

Written By:
Wednesday, April 2nd, 2014

marijuana security camera Law
After several studies were conducted over the last decade, Washington State legalized the recreational use (i-502) of marijuana after decades of it being outlawed based on information from the past. Partially because this is expected to stimulate both the local and state economies, several other states have begun to consider making similar changes in their laws. Politicians from across the country are closely watching how these controversial changes in the state laws will affect our society and economy.

The government of Washington state is strictly regulating this industry and part of these regulations make the use of security camera systems a requirement through i502 Initiative to be a part of this lucrative industry, which is expected to generate over 2 billion dollars in 2014. This is not only one way that a good security camera system can benefit people involved in this industry at any level. Security cameras can also be a good idea because this industry is more vulnerable to theft as a result of the national bank’s policies toward handling funds for these types of businesses. High quality security cameras can even be useful during the growing process. In this article we’re going to take a closer look at these applications.

Legal Requirements For Marijuana Security Camera Systems

To get a general understanding of what these state laws require we’ll take a look at how the Washington State Liquor Control Board i-502 law says that surveillance cameras must be used at any facility which is a licensed part of this industry. The DVR or NVR used to record the security camera footage must be accessible over the internet and be able to record video footage that is stamped with the accurate date and time. The DVR or NVR at any location which is a licensed part of this budding industry must also be protected by a lock box or similar method of preventing unauthorized tampering.

The security cameras have to be positioned in such a way that they can record video footage of the perimeter of the premises in order to be able to monitor both pedestrian and vehicular traffic traveling both ways.

At retail locations a fixed camera, which is able to identify all activity within twenty feet of all entry points, must provide video coverage of the point-of-sale areas at all licensed retail locations. There must also be additional cameras that are able to identify anyone inside this type of facility.

Growing facilities must have cameras that are capable of providing video in low light conditions located so that they will record video of all entrances from inside and outside the building and allow a viewer to easily identify the actions of anyone inside the building. Approaches to the premises must also be monitored with fixed security cameras. All areas where marijuana is grown must have a camera that provides an unobstructed view of any activity involving the plant, including the destruction of any waste.

Protecting the investment.

There are a couple problems facing this fledgling market because of the fact that federal government still considers this plant illegal even though these two states have made it legal and several other states have either already allowed the legal use of marijuana for medical purposes or are going to be voting on it in the near future. The first of these problems is that none of the financial institutions are offering financial services to any business that is involved in selling marijuana. The second problem facing this industry is the fact that the larger, national security camera installation companies will not provide their services to this type business.

The fact that banking institutions will not deal with these businesses means that it is becoming an all cash industry. A pound of marijuana sells for around 2,000 dollars so there is quite a bit of cash being handled and that combined with large amounts of the valuable product makes facilities at all levels of this process a tempting target for thieves. There have been reports of robberies happening all along the supply chain of this business: from the growing all the way to retail sites.

One daring robber cut a hole in the ceiling of warehouse where large amounts of pot was being stored and then used a rope to repel into the building. Once inside the thief gathered a significant amount of the valuable buds before figuring out that he couldn’t climb back down the way he came in and all the doors were locked from the outside. Another thief rammed a car through a warehouse door to gain entry. In yet another robbery people were dressed up like ninjas as they drove off on motorcycles after stealing thousands of dollars’ worth of product in broad daylight. These are just a small portion of the robberies which have been reported to officials and employee theft is always a concern in business.

Exacerbating the problem is the fact that all of the larger security camera companies won’t do new installations for anyone in this business. In many cases these security camera companies have terminated existing contracts without any advance notice. The fact that these businesses are such a tempting target combined with the hands off policy of the national security camera companies is creating an exceptional demand for the services of local security camera installation companies.

Helping to grow quality products.

Marijuana is in fact a weed that will grow in a wide variety of environments without any attention but to be able to consistently yield a quality product requires a lot more attention and care. There are many potential problems that can ruin these crops if you don’t address the issue quickly. Surveillance cameras can help to monitor the situation and allow you to respond quickly if the need arises.

In order to get a high quality bud, the moisture and lighting levels must be closely monitored and maintained throughout the growing cycle. These plants will need different amounts of these nutrients depending on the current stage of their life cycle and staying on top of the changing needs of the plant.

Insect and pest infestations are another thing that can be a sneaky and destructive problem which can ruin an entire crop. There have been studies published that say that there are 272 different types of insects and mites that can damage these plants. If an infestation by any of these critters begins then catching it early is the key to saving your crops.

The female of the species of plant is the only one that will produce the valuable bud. It is even possible for a whole room of marijuana plants to change sex, becoming males overnight if they are stressed enough in the early stages of growth. This stress can be caused by handling the plants too much, not being properly seated in the soil, poor lighting and many other possible factors.

The legal requirements, protecting the investment and that fact that surveillance cameras can help a business to consistently produce a quality product mean that finding quality video surveillance equipment and service are going to crucial for this industry for years to come.

For a cost effective approach to installing an HD Security in your Marijuana Retail Store, Marijuana Farm or Marijuana Distribution Center, check out an HD-CVI System from Security Camera King. It can record 720p over standard Coax cable and is Marijuana Law Compliant.

facebooktwittergoogle_plusredditpinterestlinkedintumblrmail

Farm Surveillance – Installing a Security System on your Farm or Ranch

Written By:
Friday, March 28th, 2014

image00

Farm Surveillance is important to every farm owner. One example is imagine it is night and you hear a persistent crying from your cow that is pregnant. You hurry and get on your feet, you pluck the soiled straw from your hair and look around anxiously. Has she decided to give birth tonight after all? You wonder if she is going into labor after all, as she has been showing signs of going into labor and it has been quite a while since she started showing these signs. It is a cold night and you have to endure the face-biting cold air. Weary from a sleepless night in your barn, you wait with grim determination for heavy labor to begin.

How many of us have spent so much time in our birthing stalls waiting for the moment?  I distinctly remember many such cold nights, sleeping near the cow that was showing signs, waking up at every sound she made and often checking her to make sure she was OK. Exhausted and shivering, I would look into the eyes of my frightened cow and wonder, “Isn’t there an easier way?”  Thankfully, there is.

It is as simple as adding a Surveillance System in your barn, so that you can keep an eye on your animals from the warm comfort of your home, instead of having to sleep on the floor next to your animals. This system can also be used to prevent any theft in your property for your equipment as well as your family. The security cameras can be set up to monitor your barn, feeding stations, birthing stalls, workshop, milking facilities, equipment, driveway, and home, to name a few.  These camera systems provide economical, cost-effective solutions and have literally hundreds of applications.  I tend to be frugal and thrifty when it comes to farming, but I judge a surveillance camera system to be a worthy investment for any rancher, worth every penny.

image03

What you should be looking for

Predictably, there are a vast quantity of different types and models of surveillance camera systems.  Some are expensive while some are very affordable. Some have a few basic features; others are more complex. It makes you think, “What kind of features do I want for my surveillance system?” Each ranch or farm has its own unique needs and therefore it would be impossible to make such broad generalizations. Even so, I have narrowed down some variables to what I think are the most important features for any farming operation. While in other projects the cameras do not need to be waterproof, when it comes to farming you need weatherproof cameras as they are exposed to the elements it is essential to have a weatherproof system. A surveillance camera can take on several different shapes, and some are mounted on walls, while others to the ceiling or roof.

Usually, basic video surveillance systems feature one camera that you would monitor via a computer. One of my favorite features that I have come across is a DVR that would let you view the live feed as well as go back into the footage for review either by utilizing a CMS or a smartphone application. Personally, I consider camera systems that allow you to view multiple locations at once to be the most effective. The quality of the video footage is very important. Most of the cameras that are high resolution come with infrared LED’s allowing you to view at low light situations and at night. Most Surveillance Systems are Wired, utilizing Siamese cable and BNC connections while others like IP systems utilize PoE (Power over Ethernet) with a Cat5e Cable and RJ45 connectors. These cameras also have the ability to have motion sensing, letting you add the cameras to your existing Alarm System. All of these features are great when trying to keep intruders away, protecting your livestock and equipment. Additionally you can set your DVR to send you alerts via e-mail. If you have the TechproSS Plus App you can set the app to send you notifications when the camera senses movement. With a Surveillance System in your Farm or Ranch you will have the ability to view your Property without having to leave the warm cozy bed and if there is ever an intruder it will let you see their position and give you time to react efficiently.

You can also view your property from anywhere in the world as long as you have your system connected to your network and it has Internet connection via your Internet Service Provider. This is possible for the simple fact that most camera systems DVRs are stand-alone units running a Linux OS that will allow the cameras to be networked. In the IP realm the cameras themselves serve as their own self sustained unit. The only reason you would have a Network Video Recorder (NVR) is when you want to record the camera feeds. The IP cameras will encode all the data and some also allow a microphone connection to the camera. In the Digital Video Recorders (DVR) you would need to add a microphone and send the line back to the DVR from the microphone’s location.

There are new technologies that have arrived recently to the United States that make it affordable to have High Definition cameras. HDCVI is that technology and SecurityCameraKing.com has this technology. HDCVI is cheaper than HD-SDI and IP, cables can be run longer than before at almost 5 times the distance. You can read more about this exciting new HDCVI technology here.

Of course there are numerous other features available and I couldn’t possibly list them all, but these are a few ideas to get you started.

Cow

Preventing Theft

With the widespread of unemployment, theft is spreading at a fast rate and mainly thieves are not waiting for night time. They are doing it at broad daylight when there is no one on the property, and there has recently been a dramatic increase of agricultural equipment and livestock stolen. With a fragile economic situation and with robbery festering in our country, purchasing a farm surveillance camera system becomes even more necessary. Although you may focus on outside thieves, sometimes your employees are the ones committing the crime especially if you have a large farming operation.

While each operation is unique in every way, a Surveillance System becomes an important investment that has large benefits to make a difference. Fortunately, there are numerous options and features available at affordable prices. This technology could and will make all the difference in how you farm. No more restless nights sleeping with your live stock. No more anxiety over stolen equipment or livestock.  No more wondering if your employees are doing their jobs or stealing from you.  With countless applications and positive results, these camera systems are paving the way to better security, stress-free farming, and safer lives. Next time you have some time come and visit SecurityCameraKing.com or give us a call toll free at 866-573-8878.

image01

facebooktwittergoogle_plusredditpinterestlinkedintumblrmail

The Differences Between HDCVI and Analog CCTV Security Camera Systems

Written By:
Thursday, March 27th, 2014

When it comes to closed circuit television or CCTV systems, there are lots of different brands and types of systems to choose from. I am going to cover the differences between standard analog systems and HDCVI or High Definition Composite Video Interface (analog’s replacement in the near future). For the price of a high-end analog CCTV system, you can get an HDCVI system that will knock your socks off!

Analog Closed Circuit Television System

Analog System

Analog camera systems are the vast majority of camera systems on the market that are in use by the typical surveillance consumer. The best way that I can describe what the footage from these cameras looks like is the typical 7-11 robbery video that you see on the nightly news. With a standard analog camera system, the highest resolution you will get is 960h or 928×480 and most will only produce a standard D1 resolution of 704×480 or essentially 480i. This is equivalent to what television stations broadcast up until June of 2009. After the transition, all “full-power TV Stations” went into broadcasting HD. One of the best examples of the quality of the new transmission is before the change all the news personalities never had to worry too much about their complexion, after the change you could see the pores on these people and the makeup artists had to start working overtime to deal with the added details in their clients.

With a traditional closed circuit camera system, you will typically have a DVR (Digital Video Recorder) for encoding and storing of the video. A cable from the DVR location to the camera location, typically either a plug-and-play premade cable or a Siamese cable; there also could be an Ethernet cable with baluns used as well. A balun simply converts an Ethernet cable to a standard BNC connection; some can also send power and audio over the same Ethernet cable. A power supply is needed to power the camera from the DVR location. A camera with a BNC connector on it typically is under 700TVL or 700 TV lines.

Some of the higher end analog systems have great picture quality and are suitable for some people on the market, but with the fact that as a society, we have grown to expect better definition on any image or video we see. Over time, we will look back on analog camera systems the way we look back at vintage footage.

HDCVI Closed Circuit Television System

HDCVI System

Now you are probably wondering what the heck, another acronym in the security industry! HDCVI actually stands for High Definition Composite Video Interface, but think of it as high definition over any cable type. With HDCVI you will currently be able to get 720p high definition video, with 1080p resolution video in the very near future. While you can technically run HDCVI over any existing security camera cabling that has copper in it, the better the cable the better the results you will see. Let me explain that a little further. To receive the absolute best picture out your HDCVI system you should use either RG59 or RG6 Siamese cable. With most RG59 and RG6 cables on the market, they have more copper in them than most other cable types, and the shielding that surrounds the core helps to prevent interference from outside sources. The next best cabling method would be Ethernet cable (Cat5e/Cat6), preferably a high quality, with baluns. This is because with all the options of cabling this is the second best cable as far as copper content. You can use standard Plug and Play BNC cables, but keep in mind that the better the cable the better the video.

With HDCVI camera systems, you do get the same truly closed circuit television system that you are used to with an analog system, unlike what you get with an IP megapixel camera system. What that means is that all the cameras come directly back to the DVR (Digital Video Recorder) which is where the video is encoded and stored on the internal hard disk drive. This isolates the cameras from the network unless you have the unit connected to the network. Even when the system is connected to the network, it is protected by a three failed attempt lockout. What that means is that even if someone finds the system, if they fail three times on guessing the password, the system locks the account from access and continues to keep on operating as normal. It just helps to prevent unauthorized access to your surveillance system. With the fact that the DVR is doing all of the encoding, this helps to prevent lag in the video. What that means is that what you are truly looking at is what is going on in real time and not having the second or so delay from the live shot to what you are seeing. This is typically a downfall in an IP megapixel camera system. Another advantage of HDCVI camera systems are that all the OSD (On Screen Display), PTZ (Pan Tilt Zoom) control, and audio can be transmitted over the single coaxial cable that is also sending the video from the camera to the DVR.

In conclusion, if you are looking for a new security system, you can go with different options. You can go the traditional analog camera system route and have it be obsolete in a year or so. You can go with an HD-SDI (High Definition – Serial Digital Interface) camera system, which will give you some temporary benefits over HDCVI right now, but will be obsolete in a few years. You can go with an IP megapixel system that will give you the ability to constantly upgrade over the years. Alternatively, you can go with an HDCVI system which has some minimal limitations on the resolution at the time being, but this is the technology that will wipe analog and HD-SDI camera systems off the market. The cost of these HDCVI systems are only a few dollars more than a high end analog system.

facebooktwittergoogle_plusredditpinterestlinkedintumblrmail

How to Connect HD-CVI Cameras to an HD-CVI DVR

Written By:
Wednesday, March 19th, 2014

HD-CVI is a brand new CCTV technology that delivers High Definition Video over Standard Coax Cable. In this article, I will explain various options on how to connect your HD-CVI Cameras to your HD-CVI DVR. All of the products I will show are available at http://www.securitycameraking.com.

The first option is the one we recommend the most.

HDCVI Wiring Option 1

As you can see in Option 1 this configuration utilizes Siamese Cable with a Distribution Box. The great thing about HDCVI (High Definition Composite Video Interface) as stated above is that you can achieve up to 720p resolution over Analog Coax Cable. To power the HDCVI cameras in this configuration you will need a distribution box. The one in this picture is a 4-channel distribution box. The 18-2 wire coming from the Siamese Cable connects into the distribution box and the other side connects into the female power lead, which then plugs into the power port of the camera. To see and record the video, you will connect the RG59 part of the Siamese Cable to the HDCVI Digital Video recorder (DVR) via a BNC Connector into the video input jack. The other side of the cable will connect to the BNC port on the camera via another BNC Connector.

In the next option, you will see the same sort of configuration except with a power plug instead of a distribution box.

HDCVI Wiring Option 2

In this option, you will use a 1amp minimum power supply to run power to one camera. If you have multiple cameras, either you can use separate power supplies or you can use 4-channel Output Switching Supply if you are powering up to 4 cameras, or an 8-Channel Power Supply for powering up to 8 cameras. In this configuration above for power, you will need a male power lead to connect to the power supply, attach the 18-2 wire from the Siamese cable, and attach the other end of the 18-2 into a female power lead. Then, just plug the power lead into the power port on the HDCVI camera. Keep in mind you will do this for each camera, even if using a 4-channel power supply. For video, the connections are the same as in option 1.

The next option is the simplest option but not highly recommended (although it does work and is good for novices).

HDCVI Wiring Option 3

In this option, we use a Plug and Play Power/Video Cable. There is no special wiring involved. For power, just plug the power supply into the power adapter of the plug and play cable, and then plug the other side of the cable into the power port of the HDCVI Camera. For Video, connect the BNC from the cable into the Video Input on the HDCVI Digital Video Recorder, and attach the other end to the BNC port of the camera.

In the next configuration the diagram consists of the same setup as above except with a distribution box as the power supply.

HD-CVI Wiring Option 4

In this configuration showing how to connect an HDCVI Camera to an HDCVI DVR, power is generated through a power distribution box. To send power to the camera using a plug and play video/power cable as shown above from the distribution box, you will need a female power lead. Connect the two wires of the female power lead to the port in the distribution box and connect the other end of the female power lead into the power port of the plug and play cable. Then, attach the other end of the plug and play cable to the HDCVI Camera. For video, plug the BNC from the cable into the HD-CVI Digital Video recorder and the other end into the camera.

In the next option, we move on to using Cat5e/Cat6 Ethernet cable for video and power transmission.

HDCVI Wiring Option 5

The great thing about High Definition Composite Video Interface (HD-CVI) is that video can be streamed through either Standard Coax Cable or Ethernet Cable. In the above diagram, the power starts with a plug-in power supply. In order to go from the power port on the power supply to the Ethernet cable, you will need to use a passive video and power balun. The power supply plugs into the power port of the balun and then the Ethernet Cable plugs into the RJ45 Jack of the Balun. Then the other side of the Ethernet cable is plugged into the RJ45 jack of the camera side Balun, and the camera’s power port connects to that balun. For video, The BNC from the Balun connected to the power supply is connected to the HDCVI Digital Video recorder and since the Ethernet cable is already plugged into the baluns, you just need to connect the camera’s BNC port to the other Balun.

In the last option in this article, we use the same configuration except with a distribution box.

HD-CVI Wiring Option 6

In this configuration, things get a little tricky. Instead of just plugging in the Ethernet cable using RJ45 Jacks, you will be working with the raw wires that are inside the Ethernet cable. You will use two of the wires for power and two wires for video. Whichever two wires you use, you have to make sure you use the same two wires on both ends.

For the power, connect the first pair of wires to the distribution box. On the camera side, connect those same two wires to a female power lead, and then attach the power lead to the power port on the HDCVI camera. For video, use another pair of wires from the Ethernet cable and attach both ends to passive video baluns. Connect one Balun to the HDCVI DVR and the other to the BNC port on the camera.

In conclusion, there are many different options to connect the HDCVI DVR to an HDCVI Camera. We highly recommend the first two options for best picture resolution and clarity. Plug and play cables are easy, but the clarity isn’t as good as standard coax cable. For more information on HDCVI, visit our “What is HD-CVI” page on our website at http://www.securitycameraking.com/what-is-hd-cvi.html.

facebooktwittergoogle_plusredditpinterestlinkedintumblrmail