Posts Tagged ‘ monitor’



Surveillance Spy Cameras

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Wednesday, December 1st, 2010

If you need to keep an eye on someone without them getting an eye on you try using surveillance spy cameras. Actually, these cameras not only allow you to keep an eye on someone but also something like a pet, a house, a boat or some other type of property.

What exactly is a surveillance spy camera? Typically, a surveillance spy camera is a special type of digital video security and surveillance camera.

A digital video security camera usually has one of three different shapes. Box cameras look like rectangular box shapes and are typically mounted on walls, posts, and other areas. Bullet cameras resemble box cameras but have rounded ends, hence the name “bullet.” Dome cameras are normally flush mounted on a ceiling or wall and have a small protective bubble or dome that covers the camera. The presence of these cameras is somewhat obvious and their usually is no attempt to hide or disguise them.

Surveillance spy cameras on the other hand are digital video cameras that are much smaller, so small in fact that they are often hidden or disguised as other objects. They may contain their own Digital Video Recorder or DVR and power supply and be an entire standalone system, or they may require an external power supply and be incorporated into an entire digital video security system that has both hidden and visible cameras, a standalone DVR with a Digital Signal Processor or DSP, and a monitor.

How can surveillance spy cameras be so small? Let’s look at how a full-size digital video security camera works then will look take a look at a surveillance spy camera. Digital video cameras have three main components within the camera; the lens, a sensor chip, and the electronic circuitry used to operate the sensor chip and convert its information into digital data (a series of 1s and 0s).

The lens is a highly machined mechanically functioning glass (or plastic) that focuses the cameras field of view onto the sensor chip. Generally, the higher quality and type of lens, the higher quality of the video produced. Lenses determine how far, how wide, and how detailed the target area will appear.

There are two types of sensor chips, a Charged Coupled Device or CCD and a Complimentary Metal Oxide Semiconductor or CMOS. These two chips work a little differently but accomplish the same objective, transferring light energy into electrical energy. These chips are usually square or at least rectangular in shape and usually range from 1/4 inch to 1 inch in size.

Electronic circuitry is used to interpret the chip, read its information, and convert it from an analog signal into digital data. The electronic circuitry may also provide other functions such as audio recording and movement of different camera parts.

Surveillance spy cameras contain the same components but the components are designed to be very, very small while still performing the needed task. For example, most of these cameras are extremely small. Their lens is not a full size variable lens but is a very small wide angle lens instead. This eliminates the need for a large lens attachment.

Secondly, surveillance spy cameras usually use one of two sizes for their CCDs or CMOSs, 1/4 inch or 1/3 inch. The incredibly small sizes of these sensor chips allows them to be used (hidden or disguised) in very small objects such as ink pens (see Security Camera King’s product # HC-PEN for example) or wristwatches (see our product # HC-Watch).

Finally, with the latest improvements in Integrated Circuit (IC) chip technology, incredibly complex circuits can be made in circuit chips that are only 1/4 inch in size also. For example, the electronic circuitry needed to activate and read the sensor, convert the information into digital data, and transmit it wirelessly to a corresponding receiver can be fit with a IC chip less than an inch in size.

In addition, surveillance spy cameras can also have their own miniature DVR in the form of a small memory chip. As computer memory technology advances, these chips become smaller yet hold more data. The data on the memory chip can be downloaded to a personal computer using a USB cord.

Security Camera King has a very wide assortment of surveillance spy cameras available for purchase. These cameras come in all sizes and types (view the products individually on-line by clicking on the left hand side of the page “Security Cameras” then “Hidden Security Cameras” or “Wireless Hidden Cameras” or “Hidden Camera Systems.”

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Wireless Security Camera with Recorder

Written By:
Wednesday, October 6th, 2010

A wireless security camera with recorder can be your answer to an easy to install and easy to operate security device. Technological advancements in electronic components and computer development have made a wireless security camera with recorder a reliable security device that is reasonably priced to fit just about any budget. Use more than one wireless camera with a recorder and you can create your own total coverage wireless security system.

Digital video security systems are becoming extremely popular these days for business use as well as in the home. In addition, there are so many features and/or options available that these systems can be placed just about anywhere for any application.

In this article, we’ll briefly describe a standard digital video security camera system and then elaborate on the differences between it and a wireless security camera system. Finally, we’ll list some of the features and/or options that are available for a wireless security camera with recorder.

A standard digital video security camera with recorder system is a component system that consists of one to many cameras, a Digital Video Recorder or DVR, and a monitor. The system operates with the camera “capturing” digital video and sending it to the DVR (which normally includes a processor as well). The processor creates a digital video file which is stored on the DVR and can be viewed immediately (live) or at a later convenient time.

The standard digital video camera contains one of two sensor chips that convert light energy into measurable electrical energy that can be used to create a video image. The lenses focus the field of view of the camera on these sensors. The chips are the Charged Coupled Device or CCD and the Complimentary Metal Oxide Semiconductor or CMOS.

After the sensor chips have created electrical data that can be used to create a digital video file, they send this data to the DVR and processor via a video transmission cable, usually an RG-59 coaxial cable. Each camera must be connected to a separate cable that is run from the camera to the DVR/processor. The processor than performs the necessary work required to convert the electrical data into a digital video file.

The processor is much like the processor in a personal computer, however security camera systems processors are highly specialized processors that are made to perform specific tasks necessary for digital video security systems. One important task of the processor is to reduce the size of the incredibly large digital video file without sacrificing the quality of the video. It does this by using a COmpression/DECompression or CODEC utility. Once the processor creates the digital video file it can be viewed on a monitor or stored on the DVR for archiving or to be viewed at a later time.

A wireless security camera with recorder system is operates in basically the same manner. The major difference with this system is that the wireless security camera does not use a coaxial video transmission cable to send the video data to the recorder. Instead, it converts the data into radio signals and sends the data as a radio wave to a receiver which is connected to the recorder.

There are a few variations on how the camera prepares and sends its wireless data. The most common method is for the camera to have an on-board transmitter and antenna that transmits a radio signal to a corresponding receiver. Many different radio frequencies and technologies are used, but the most common is the 2.4 or 5.8 GHz band technology. This is the same sort of wireless technology used on land based wireless telephones. Once the receiver accepts the signal it passes it on to the DVR/processor via a wired connection.

Another type of wireless camera is the Internet Protocol ready or IP ready wireless camera. This camera has its own web server technology that allows it to be connected directly to the internet. It normally connects wirelessly to the internet by sending its signals to your broadband wireless modem or router. The recorder can be connected anywhere there is internet access.

There are many features/options available for a wireless security camera with recorder. Here is a partial list:

  • • Indoor/outdoor cameras
  • • Day/night/infrared vision cameras
  • • Pan-Tilt-Zoom (PTZ) cameras
  • • Audio recording
  • • Battery (rechargeable) powered cameras
  • • Hidden/disguised covert surveillance cameras

This should give you some basic information about how a wireless security camera with recorder works and some the optional features that are available.

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Residential Security Camera

Written By:
Wednesday, June 9th, 2010

Nothing can provide you with more peace-of-mind about your home than a residential security camera. If you want to be able to “look-in” on your home during the work day, monitor your home from a distant location (for instance, when on travel), or have the ability to record the perimeter as well as the interior of your home, then a residential security camera system is for you. Not only do residential security cameras provide you with the means for real-time security monitoring but thanks current technological advances, they are affordably priced as well.

A typical monitoring system for the home includes from one to many residential security camera(s), a processing unit, a monitor, and a digital video recorder or DVR. There are systems that can use a personal computer in place of the monitor, processor, and DVR and these can save you even more money on the price of the system as a whole.

A residential security camera may be an indoor or an outdoor type camera. Outdoor cameras differ from their counterparts by being enclosed in a case that protects them from the weather and other environmental elements. Often times, outdoor residential security cameras are rated as to the protection they afford from damage by external matter. This rating, called an Ingress Protection code or IP code is based on an International Electrical standard. Most outdoor residential security cameras, unless they will be covered by some other type of covering or protection should be rated IP66 or IP67.

Both ratings indicate that the camera housing protects the inner contents one hundred percent from dust. This is what the first “6” is the code represents. However, and IP66 rating means that in addition, it can withstand powerful jets of water from any direction (the last “6” in the rating). IP67 rated cameras mean that in addition to the protection from dust, they can be submerged in up to one meter of water.

A residential security camera is a digital video Closed Circuit Television (CCTV) camera that can produce high quality color video. In addition to this standard feature, cameras may be able to produce video images in settings where there is very little light or no visible light at all. This is due to the image sensor chips that are used, either a Charged Coupled Device or CCD or a Complimentary Metal Oxide Semiconductor or CMOS. These integrated circuit chips are able to produce electrical impulses from light that is focused on them from the lens. These electrical impulses are further translated into digital video data.

A day/night vision residential security camera can produce high quality color video in very low light conditions. A night vision infrared (IR) residential security camera can produce high quality color video when there is visible light and high quality black and white or monochrome video under infrared conditions.
A night vision IR residential security camera works by providing its own IR light to illuminate the target area. Generally, these cameras have an array of IR Light Emitting Diodes (LEDs) that surround the camera lens or are next to it that “flood” the target area with IR light. Light that is invisible to the human eye but can be seen by the CCD or CMOS. The LEDs work like an invisible spot light. This particular type of residential security camera works great as a baby monitor or nursery camera. In addition, these cameras can also record audio.

Residential security cameras can be on their own standalone system which includes a DVR to record the video or they can be networked. There are IP ready residential security cameras. IP (Internet Protocol) cameras can be networked using the internet. This means that you can monitor your home cameras any time and any place there is access to the internet. These residential security cameras are particularly useful for people that must travel or as nanny cams that can be monitored from work computers during the workday.

There are several other features or options that are available on residential security cameras as well. Cameras can be purchased with pan, tilt, and zoom options that allow the camera to me moved horizontally or vertically to increase the field of view. In addition, zoom lenses can enlarge subjects using telephoto lenses.

A residential security camera has the versatility to be used anywhere throughout the home. In addition there are several monitoring and recording options available and all can be purchased an installed for an affordable price.

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CCTV Video Security Surveillance Equipment

Written By:
Friday, May 28th, 2010

CCTV video security surveillance equipment or closed circuit television video security surveillance equipment can provide all of your security and monitoring needs. Contemporary CCTV video security surveillance equipment offers several features and great versatility along with affordable prices that make this equipment and excellent choice for business and residential applications.

CCTV video security surveillance equipment consists of a few basic components that make up the security systems. Each of these components offers convenient and often highly technologically advanced features that create the versatility of the system such that the equipment can be used for nearly any situation or application. In addition, there are several additional components that can be added to a basic system with ease.

Basic CCTV video security surveillance equipment consists of the following five items:

  • Digital video camera(s)
  • A processor or capture board
  • A monitor
  • A digital video recorder or DVR

Probably the most important component is the digital video camera. Digital cameras for CCTV video security surveillance come in a variety of types, sizes, and functions. Cameras can be classed as either indoor or outdoor cameras. The major difference between the two is that outdoor cameras are built within a casing or enclosure that protects the sensitive electronic components of the camera from the weather and other environmental elements.

These cameras often contain an International Electrical standard code rating that provides the user with a description of the ability of the camera to withstand penetration by liquids and particles. This rating known as an Ingress Protection code or IP code is normally an IP66 or an IP67 for an outdoor CCTV video security camera. IP66 means that the camera is impervious to dust and that powerful water jets from any direction shall have no harmful effects. A rating of IP67 means the camera is impervious to dust and can be submerged in water up to 1 meter in depth.

CCTV video security surveillance equipment cameras can be purchased with other specialized features. Most of these features are based upon recent technological innovations and may increase the cost of the camera depending on the feature and its range of function but are well worth the expense.

For example, most CCTV video cameras create video using a small sensor chip called a Charged Coupled Device or CCD. The CCD converts the light transmitted through the camera lens into an electrical charge that can be detected and used to create high quality digital video. Some CCDs are so sensitive that they can produce high quality video with very little visible light. These cameras, are called day/night vision cameras. Other cameras, called Infrared (IR) night vision cameras can produce a high quality color image when there is visible light present and can produce a high quality monochromatic or black and white image under total darkness conditions when absolutely no visible light is present.

Other features that can be included on CCTV video cameras include a pan, tilt, and/or zoom function, the ability to record audio, and the ability to transmit the video signal from the camera to a receiver using radio waves.

Pan and tilt functions permit the camera to be moved in different directions allowing the camera to cover a wider area of view than one that is stationary. Using pan and tilt functions, one camera may be able to cover the area that may take two or three stationary areas to cover. The zoom function also allows the camera to take advantage of enlarging the field of view, much like a telephoto lens. Cameras can be purchased with the individual pan, tilt, and zoom functions or they can be offered collectively, often referred to as PTZ cameras.

PTZ cameras can be controlled manually, by remote control, and by programming. Programming functions for PTZ cameras can provide automatic tracking functions when utilized with automatic motion detection. For example, the camera can follow a car traveling through a parking lot or an individual in a specific area.
Wireless CCTV video security surveillance equipment normally uses the 2.8 MHz or 5.8 MHz radio band to transmit the video image from the camera to the receiver, which then sends it along to the processor. Cameras come with built-in antennas and circuitry that send the images.

CCTV video security surveillance equipment has seen tremendous technological improvements in just the past few years making the equipment versatile and affordable for just about any application.

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