EVOLUTION OF CCTV TECHNOLOGY

Over the years CCTV technology, ability, and usefulness has evolved.  The earliest documented use of CCTV comes from Germany in 1942.  Cameras were used to observe the testing of rockets.  The components of the system were cameras and monitors.  The fundamental use of these early systems was simply live monitoring.  It is still a major use today.  Cameras can be placed where people cannot or do not want to be, whether it be near a rocket or in a sewer pipe.  Multiple camera systems also allow one person to monitor an area that would never be possible without them.

The next evolution of CCTV came from recording video.  By the early 1980’s VCR’s and multiplexers were being used between the cameras and monitors.  A multiplexer allows for multiple cameras to be seen on one monitor.  The iconic split screen of four cameras is made possible because of the multiplexer.  Before it watching four cameras meant using four monitors or a switcher that showed only one channel at a time.

The VCR changed the use of CCTV.  Now that the video was being recorded, it could be used as evidence of crimes.  It also expanded its abilities.  No longer was someone needed to monitor the live video.  A system could be installed and then forgotten about.  If there was an event there is now a record and it can be viewed after the fact.  The VCR took the place of the viewer for most of the time.  The technology was still clunky.  Tapes needed to be changed every day or rewritten.  That meant that either the user only had a day at the most of video or they had to keep a library of VHS tapes.  If there was a crime or event, the tape could be given to the authorities as proof.

In the early 2000’s the CCTV industry moved toward the digital age.  The VCR was replaced by the DVR.  DVRs made the CCTV system simple.  Firstly, with a DVR the multiplexer is built in.  That means there is one piece instead of two.  The cameras go straight into the DVR.  The second improvement is that the video is stored digitally on a hard drive.  No more tapes, the video is recorded internally.  Once the hard drive is full it can start writing over itself.  Depending on the size of the hard drive the unit can store days or months of video.  Also with the digital format, the video files are organized.  The user can look for video with a time search feature.  Since the format was digital the video could be downloaded to a DVD or a USB if it needed to be saved or given to the authorities.

In current surveillance systems the DVRs are equipped with on board video servers.  This allows a viewer to remotely log in through a PC or a smartphone.  Depending on the DVR they can do everything from view live footage or even download recorded video remotely.

The current cutting edge of CCTV technology is IP megapixel cameras.  Functionally, the use of the analog camera with DVR system and the IP (internet protocol) video system is the same.  The biggest difference between the two is resolution of the video.  Whether a VCR tape or the digital footage from a DVR, resolution has always been an issue.  A simple Youtube search of CCTV will show the standard quality of cameras being used even now.  With IP megapixel cameras the video is recorded at 5 times or higher resolution than standard analog video.  This allows for more detail from the video for evidence and it allows a single camera to monitor a larger area.  In 1996 Axis Communications developed the first IP camera, however they were not standardized until the formation of ONVIF and PSIA.

Technology aside the evolution of CCTV is about the people that use it.  From its earliest stage, it was only used by the few people who could afford it to monitor live video.  As it changed it was used mainly by businesses to record video.  Now because of the advancement to the field and the simplicity of the equipment, CCTV is being used by a wider group of people than ever.  Most systems are now being sold to small business and homes for the purpose of live monitoring with mobile devices.  People can view their cameras from anywhere and that peace of mind and security is the main attraction.

POSITION CCTV CAMERA INFO

HEIGHT AND LOCATION

1. Position the camera at a height where it cannot easily be tampered with.
2. Positioning a camera in a high traffic area allows you to monitor people entering and exiting different areas. The Camera in Figure 1 can monitor people entering and exiting 2 separate areas off a main hallway.
3. The Cameras in Figure 2 are positioned to monitor two high traffic hallways, and are making use of one installation location. When drilling holes or running wires, it is useful to plan the camera locations ahead of time – in the example shown, both cameras are making use of one cable hole.                                     

Entrances

Positioning a Camera at main entrance is a good way to monitor people entering or exiting your building. Pay attention to the lighting conditions throughout the day – if the doorway gets direct (bright) sunlight throughout the day, it may cause the image to become washed out, so it would be better to mount the Camera above the door instead of facing the door. In Figure 3, daylight is not an issue, so mounting the two cameras to face the door is fine.                                                            Distance Tips The further you wish to place the camera from the viewing or recording device, the higher the quality of the camera and cable should be. This will help ensure an acceptable image quality, and that minimal video quality is lost during transmission Keep the power supply as close to the camera as possible to ensure the optimal voltage is received. The further the power supply from the camera, the more power is lost, potentially affecting video quality and IR brightness Cameras should be placed out of reach of intruders Do not place wireless cameras within 15 feet of each other or within range of other wireless devices using the same frequency Wireless networks, cordless phones, and microwaves are the leading causes of interference using the 2.4GHz frequency

ENVIRONMENT

Weather Resistant vs. Weatherproof Locations

• Weather Resistant Cameras cannot be placed in a location where they will be exposed directly to the elements (rain, snow, etc.). These cameras should be placed in an area where they will be protected from the elements, such as under an overhang or awning (see Figure 4).
• Weatherproof Cameras can be placed in an area where they may be exposed directly to the elements (see Figure 5). However, it is still recommended that outdoor cameras be placed in an area where they will be protected from the elements.
• Submersible Cameras  are considered underwater cameras, and are designed for direct contact with water.

Environment Tips

• Make sure the power connections are not directly exposed to water and moisture, and shielded from other outdoor elements. Each camera has an IP Rating (Ingress Protection Rating) that determines the amount of exposure to water – please review the manual for the specific model prior to permanently mounting the camera
• Ensure that outdoor power cables, such as extension cords, are designed for outdoor use
• Over time the protective camera lens may become dirty. Clean the lens using a lint free cloth
• Weatherproof only means that the camera can be exposed to weather, such as rain and snow. Weatherproof cameras cannot be submerged under water
• Do not place the camera where rain and snow will hit the lens directly
  • You may want to consider purchasing a sunshade housing
• Cameras geared for cold weather, such as -10°C may work in conditions as low as -25°C, as the camera produces heat when plugged in

LIGHTNING 

Day vs. Night Lighting

• It is important to note the lighting conditions at different times of day and night
• In Figure 6, the camera has been positioned to monitor a Parking Area during the day. The lighting conditions are optimal, and a clear picture of cars and traffic is shown
• In Figure 7, the same camera is shown, facing the parking lot at night, however the lighting conditions are no longer optimal as the camera has been positioned facing directly at a spot light (as shown circled in Figure 6). When the light comes on at night, it causes a white-out and halo effect that takes up a large portion of the video image, and makes the remainder appear washed out

Lighting Tips

• For best results do not point the camera towards a light source
• Pointing the camera at a glass window intending to see outside may result in a poor image because of glare depending on the lighting conditions inside and outside.
• Do not have the camera in a shaded area looking out into a well lit area as this will display poor results. The light to the camera sensor in the front of the camera needs to be the same as the light at the focal target for best results.
• For night vision, additional IR LED lighting should be placed above the camera to ensure everything within the camera view is illuminated. See the Night Vision Guide for details.

OTHER

• When installing the camera, before screwing in the mounting bracket, check the image on the screen to see if the picture is acceptable and clear from direct sun or light
• Place cameras in the most strategic places where they can provide detailed, recorded video of every visitor (such as Entrances, Exits, Cash Registers, etc.)
• If possible, plug cameras into a surge protector, as just like any other electronic device, they are extremely sensitive to voltage changes and can fail prematurely.
• Consult the Lighting Guide and Night Vision Guides.

HOME SURVEILLANCE

If you are interested in protecting your home with a surveillance system, you should first grasp the concepts of the technology.  There are several home surveillance systems to choose from, making it in your best interest to learn all you can.

No matter how hard you may try, it can be nearly impossible to ask the right questions or complete your goals without first finding yourself overwhelmed by possibility.  There are many alternatives and “what ifs” to any home surveillance system.  Selecting which type is best for you can be a bit easier, if you know what they offer and which one will work the best for you.

Closed circuit television and several other types of electronic devices are much more common these days, and easier to operate than ever before.  They are also more affordable as well, and becoming more and more popular with home owners everywhere.  The basics behind closed circuit systems lets you know that the signals the camera picks up aren’t broadcast through the air, but instead sent directly to the monitor, which can be observed from virtually anywhere – at anytime.

If you learn more of the basic concepts involved with home surveillance systems, you can make more sense of the language when you talk to salesman and others in the trade.  If you aren’t familiar with any of the technology or systems at hand, you won’t know what salesman or others in the trade are talking about when you inquire about your home surveillance system.

Therefore, you should always strive to learn as much as you can about the terms and subjects of home surveillance.  It’s actually easier than you may think, as long as you keep it simple.  Once you have built the foundation, you’ll find it easier to learn more.

The first thing to know is that the camera is responsible for all images that are displayed on the monitor or captured.  The performance of the camera will vary on the reflected light available on the area that you are surveying, the quality of the components that you are using, and the overall performance of the camera.  Some cameras are high quality, while others can be very poor and lack in direction.

Overall quality with a home surveillance system however, will greatly depend on the weakest area of the chain.  To get the most from your system, you should always make sure that each and every component is of the same quality.  This way, you can get great display images without having to worry about shoddy quality.  If you do your research and compare, you can even get great quality at very affordable prices.

When you select the home surveillance system that you will be using, you should always take the time to research and compare.  If you understand the basic concepts of home surveillance, you’ll have a much easier of time of selecting your equipment and components.

To make the best decision possible, you’ll need to look at certain areas of home surveillance systems, such as the illumination, lighting, resolution, sensitivity, and the video signal that is sent to the monitor.  The quality will vary among the different options you have available, which is why you should always look for the best system that you can afford.  This way, you’ll have the surveillance protection you need for your home – at a price you can afford.

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KEJADIAN RAGUT DI JB.

TYPES OF SECURITY CAMERAS

Crime doesn't just happen in dark alleys and in stores but also in homes. Crime can happen to anyone anywhere, even in your own home. This is why personal security is so important these days. Many people are able to sleep better at night knowing that they have their own security guard watching everything all day every day, usually with security cameras. Finding the right personal security can be expensive. So how do you get personal security without breaking the bank?

The answer is to get your personal security with security cameras but you have to know about the different types of cameras that are available before you choose what to use. Here are some of the different types of cameras for security that are available.

1: Black and white security cameras – These cameras have been used since the beginning and are known as being classic for any home security. Plus with these cameras for security you will find that the resolution is higher than it is on the color cameras. Not to mention that the images on these cameras is a lot easier to enhance than the color images are.

2: Color security cameras – Everyone likes to see things in color more than they do in black and white and these cameras for security will give you a real life depiction of any images.

3: Wireless security cameras – These are becoming more popular every day because they have everything that most people love about cameras for security without having all of the annoying wires to go with it.

4: Dome security cameras – These cameras are used for low profile security and will allow you to follow any movement inconspicuously.

5: Hidden security cameras – These are the cameras for security that a lot of people prefer because they are small and can be easily hidden. Many people will use these types of cameras for nanny cams to keep their children safe.

6: Bullet security cameras – These types of cameras are used outdoors more often because they are perfect for monitoring outdoors. They are cameras that are known for being rugged and also weatherproof.

Now that you know about the different types of security cameras that are available, you need to know what some of the features are.
One: Cameras for security can be remote controlled most of the time. This makes it more convenient for you.

a: There are motion sensors that will be able to turn on your camera and tell you when danger is near.

b: Many of the security cameras are able to pick up audio and video.

c: You can find cameras for security for both indoor use and outdoor use.

Security cameras are a great way to protect your home against a break in because usually when a burglar sees that you have one, they will move on to a home without one. So knowing this, you will be able to relax more. It is not hard to find the cameras for security that will fit your needs. All it takes is some research and time.

Man Kills Woman For Having New Boyfriend 'Too Soon'

(10 October) A man reportedly shot his ex-girlfriend to death in a shopping mall because she had a new boyfriend.

Police arrested Mr. Boonlert Ladlod, 35, from Mueang District, Chumphon province, in connection with the murder of Ms. Piyakron Homlarp, 34, a resident in Thasae district.

Initial investigation suggested that the victim was a worker in a coffee shop inside Chumphon′s branch of Tesco Lotus.

CCTV camera had recorded the time when Mr. Boonlert allegedly fled the scene by his motorcycle. The image of Mr. Boonlert captured in the CCTV was later confirmed by witnesses that he was the alleged murder.





The man then confessed of murder, after the police pressed charge against him.

Explaining his motives, Mr. Boonlert said that he and Ms. Piyakorn decided to end their two-year relationship prior to the incident, and Ms. Piyakorn promised she would not date any other man until Mr. Boonlert is over her.

However, Mr. Boonlert believed that Ms. Piyakorn broke the promise, as he had seen her with another man in the mall. He felt insulted by the sight, and decided to commit the crime.

The alleged murderer said he threw the gun in Tha Taphao canal, but the police had yet found it.https://www.facebook.com/photo.php?v=516336188460158

CCTV LENSES & ANGLES