High Definition CCTV Cameras

High-definition CCTV cameras

As a CCTV installer, you always want to buy the best value cameras on the market. The current trends in video products have influenced our customers’ perception about security cameras. Large TV manufacturers like Samsung, LG, Sony geared up the launch of 11K TV resolution, so it is not a surprise that the CCTV market is also under pressure from consumers, who are demanding higher definition.

Analogue CCTV cameras have faded away from the market. In fact, I had a lot of difficulties in finding an analogue CCTV camera for one of my customers. We are left with two options, IP and high definition.

IP cameras like AXIS come with fantastic resolution. But, the expertise required to install them and the price sometimes doesn’t suit our clients’ budget. If you are upgrading an existing analogue system, you may have to rewire the whole place with CAT5 or CAT6. And this is an expensive option. So, what are the other options?

Analog high-definition CCTV cameras

In recent days, the demand for analog high definition has gone over the top. Many manufacturers have started manufacturing analog high definition CCTV cameras.

This article compares some of the analog high definition technologies available to us.

HD-SDI (High definition – serial digital interface)

The very first to start high definition in analog is HD-SDI. HD-SDI is capable of producing full HD or 1080p resolution. However, the high price and compatibility of them have pushed them to the last place.

HD-SDI was used in the early days of camcorders. The only reason they were not introduced in CCTV cameras is due to the fact that they were very expensive.

HD-CVI (High definition composite video interface)

HD-CVI or high definition composite video interface is the latest addition to the HD CCTV system. This technology is developed by Dahua. HD-CVI technology is capable of transmitting video signal via coaxial cable to a maximum of 500 meters. This is a big advantage compared with previous generation analog cameras. HD-CVI also makes it easy to transmit audio, video, and data with one single coax cable. HD-CVI has zero latency and this is another clear advantage compared with IP technology.

HD-TVI (High definition transport video interface)

HD-TVI was introduced in 2014. This is a DSP-TVI technology developed by an American company called Techpoint. HD-TVI chipset is used by Intersil, Hikvision, HanBang and much more.

When twisted cables are used, TVI clearly gives an advantage in running them for longer distances.

AHD (Analogue high definition)

AHD technology is developed by NextChip Korea. AHD supports 720p and 1080p video resolutions. AHD technology also has pros and cons, AHD chipsets are generally the cheapest among HD chipsets, hence the final product cost is slightly cheaper than HD-TVI or HD-CVI.

AHD cameras can transmit video signals through RG59 and RG6, hence it can transmit signal up to 500m without losing strength. It also supports audio over coaxial.

IP cameras

As far as IP cameras are concerned there is no cap on the maximum video resolution that you can get. Axis is one of the leading manufacturers of IP CCTV cameras and their AXIS Q3617-VE is capable of producing 6MP (3072×2048).

IP cameras have become easier to install and maintain, but it still requires a fundamental understanding of networking. In most cases, this is a challenge for installers.

What is the best option for me?

The verdict is, it all depends on your project requirement. If your customer is more concerned about video resolution, and if they are looking to use a video management system, IP cameras may be appealing to them. If most of your customers are small and medium size businesses, it may be good to look at analogue higher definition. And if you are planning for a long cable run, AHD is a good option. All analogue high definition cameras are very similar apart from HD-SDI, therefore it may be a good idea to check after sales support from your distributor as well.

Science and Technology – Definition by Real Life Examples

How someone could define what is Science and Technology?

Science is search for the profound knowledge. Scientists investigate the world around us. They observe how things work and develop ideas about ways to make them work better. Sometimes they try to test an idea to explain how something works. Scientists perform experiments to find out how things work. The knowledge that they discover is useful for many things. It can help to build new machines. It can help scientists to develop new medicines or cure a disease. Technology is the use of scientific knowledge to create new things.

Then what is an Inventor?

An inventor is a person who creates a new idea or device to perform a task. An invention is the new technology created. An inventor with a new idea or design for an invention may decide to have the idea protected. The idea gets protection from the law in a paper called a patent. A patent prevents other people from making, using, or selling the new idea without permission from the inventor. Some inventions are simply a better way of doing or building something. They may improve an existing technology. Other inventions are much more complicated.

Today’s technology has been in the process of development for thousands of years. New inventions are constantly changing how people work and play. They change how people think and live. The future constantly brings us even more changes. This will happen as we continue to learn about the world.

Do we depend on science and technology?

What did you do today? Did you talk on the telephone? Did you ride in a car or on a bus? Did you use a computer or turn on a light? If you did any of these things, you used technology.

Almost everybody uses some form of technology at work, home, or school. Computer programmers use computer technology to write a computer program. People may write letters using a computer program called a word processor. Many people work in the entertainment industry. Camera operators use television and motion-picture cameras. They use them to make TV shows and movies. Disc jockeys, or DJs, play records and CDs on the radio.

Scientists use all sorts of technology to study the Earth and the Universe. Businesses often have telephones, fax machines, and computers. Graphic designers use desktop publishing programs to create books and magazines. Doctors frequently use medical technology. They use it to treat injuries, illnesses, and diseases such as cancer. Pilots fly airplanes and helicopters. Who knows what jobs will be created by new technologies in the future!

2011 Craftsman Tractors Exclusive: Turn Tight Technology!

A Zero-Turn For Every Homeowner And Every Yard!

Craftsman’s new & exclusive Turn Tight Technology gives Craftsman tractors the tightest turning radius of any yard or garden tractor in the industry.  For 2011 Sears will beat the turning radius on ALL other brands of yard and garden tractors, even the Cub Cadet!  This new technology is close to the practical limits of all the residential zero-turn mowers on the market today at a much better price.

This exciting new technology can only be found at Sears.

I personally like that this new feature will be offered on not just the higher priced tractors, but will be available on models ranging from $1399 to $2999.  Almost everyone will be able to buy a tractor with Turn Tight Technology if you want.

Here are some of the things you should know about Turn Tight Technology.

Turn Tight Technology Definition:

Turn Tight enables a tractor to cut around small landscape objects.  The new steering has an industry leading 8 inch radius on 2011 Craftsman Yard and Garden tractors.

Turn Tight Technology Explained:

“Turn Tight utilizes an innovative steering system accomplished through a patent pending control system that allows the front wheels to increase their turning range without contacting the mower deck or tractor chassis.  With this technology, the wheels turn to match their corresponding radius, i.e. the inside wheel matches the inside radius and the out side wheel matches the outside radius of the turn.” (This means the inside wheels have the same track and the outside wheels have the same track around an object.)

It is the tightest turning radius available on a non-zero turning tractor.  The turning radius on Craftsman Yard and Garden tractors now exceeds their closest competition by over 30%. (Craftsman’s 30% improvement represents an 8″ turning radius on a Craftsman YT vs. a comparable Cub Cadet with a 12″ turning radius)

Here is a quick list of the turning radius for other tractors as posted on these manufacturer’s websites for 2011:

  • 2011 Craftsman Yard & Garden Tractors:  8 inch.
  • 2011 Cub Cadet Series 1000: 12 inch.
  • 2011 Snapper, Husqvarna, and Poulan Pro: 14 inch.
  • 2011 Toro LX series: 15 inch.
  • 2011 Ariens Lawn Tractors: 16 inch.
  • 2011 Troy-Bilt: 18 inch.
  • 2010 Simplicity Broadmore:  18 inch.
  • 2011 John Deere 100 Series: 18 inch. (Yes, that’s what they list on johndeere.com!)

Turn Tight Facts:

A tractor’s turning radius is measured at the rear wheel when a tractor steering wheel is turned as far as possible while the tractor is moving. The smaller the radius, the easier it is to mow around obstacles and corners. 20 years ago 18 inches was considered quite good for a lawn, yard or garden tractor.

For the open areas, a tight turning radius allows you to quickly turn around and mow parallel to the last mowed swath in the opposite direction.  (If you are one of those people who likes a perfectly striped lawn this is a big advantage!) This is a big improvement from a tractor with a larger one.  The larger turning radius requires more time to turn around and many times you have to use reverse to get lined back up for the next parallel mowing path.

A tighter turning radius indicates a smaller turn.  As a result the tractor  is able to mow around smaller obstacles without having to back up.  This can save you a considerable amount of time when mowing a yard like mine with a lot of trees and landscape beds.  Since radius is 1/2 of a circles diameter, an 8″ turning radius will allow you to completely mow around a 16″ obstacle without backing up or making a second pass.

Tighter turning allows you to get around mowing obstacles like sheds, landscape beds and bird baths easier.  In many cases, you may not even need trim mower.

The Craftsman Mowers that feature Turn Tight!

These new 2011 models feature Turn Tight Technology: Craftsman YT 3000 46” Briggs & Stratton 21 hp Gas Powered Riding Lawn Tractor, Craftsman YT 3000 46” Kohler 22 hp Gas Powered Riding Lawn Tractor, Craftsman YT 4000 46” Briggs & Stratton 24 hp Gas Powered Riding Lawn Tractor, Craftsman YT 4500 54” Briggs & Stratton 26 hp V-Twin Gas Powered Riding Lawn Tractor, Craftsman YT 4000 42” Briggs & Stratton 24 hp Gas Powered Riding Lawn Tractor, Craftsman YT 3000 42” Briggs & Stratton 21 hp Gas Powered Riding Lawn Tractor, Craftsman GT 5000 54” Kohler 26 hp Gas Powered Riding Garden Tractor.