Posts Tagged ‘ ccd’



Hidden Camera Equipment

Written By:
Tuesday, September 6th, 2011

Security Camera King has a full selection of hidden camera equipment to satisfy your needs.  Modern technology has resulted in a tremendous variety of disguised and hidden camera equipment.  As a matter of fact, the smallest hidden camera that we offer for sale is the size of a Phillips head screw!

How does hidden camera equipment work?  The following is a brief explanation.

First the camera must have a lens.  The lens’s duty is to gather the light reflected by the objects in its field of view and focus them onto a sensor chip no larger than 1/4 to 1/3 inches square.  Most often but not always, hidden cameras use 3.7 mm wide angle lenses.

The sensor chip is the key factor of a digital camera.  There are two different types of sensor chips and although they both work a little differently, the both produce the same result, electrical impulses that can be measured and used to create a digital video image.

The two sensor types that do this are either the Charged Coupled Device or CCD or the Complementary Metal Oxide Semiconductor or CMOS.  Without at least one of these sensors, the camera just wouldn’t be possible.  You can see that since the lens and sensor chips are so small they can easily be packaged in such a way that no one would suspect the hidden camera.

However, there are some electronic components that are required but these are normally wired in small Integrated Circuit (IC) chips which take up very little space.  One of these chips is an analog to digital converter.  Ironically the signal up to this point has been an analog signal and the analog to digital converter changes it to full binary or digital data.

Once the data has been finalized it is sent to the Digital Video Recorder or DVR.  The DVR differs depending on the type of camera.  Some cameras are hardwired to the DVR via a coaxial video transmission cable and others have their own on-board miniature DVRs that normally save their information to either on-board memory or portable media such as SD cards, Thumb flash drives, and the like.  The latter case allows for complete independence (and makes for great hidden camera equipment) for the camera; in other words it is self-contained and needs no wiring.  These units also usually operate on one-time-use or rechargeable batteries

So, with the above in consideration we can categorize hidden cameras and hidden camera equipment into two different categories.  One where the camera is wired through to a digital video system’s DVR; and standalone (and usually portable) self-contained units.

Security Camera King offers a full line of hidden camera equipment including the two categories mentioned above.  It would be a bit tedious to mention any properties or features of these cameras in the space that we have in this article.  But to make you aware of the vast supply Security Camera King has, we will list the different cameras that are available representing both categories we have previously mentioned.

Hidden Security Cameras

  • 420 TVL Motion Detector
  • 420 TVL Smoke Detector
  • 420 TVL Mirror
  • 420 Pinhole Security Camera
  • Fire Ceiling Sprinkler
  • Hidden Stick
  • Hidden Pen
  • Wired Button Camera with extra matching buttons
  • Phillips screw head
  • Hidden Wristwatch Camera
  • Desktop Speakers
  • Exit Sign
  • Wall Clock
  • Wired Alarm Clock
  • Wired Wall Clock with Humidity and Temp
  • Wired Cordless House Phone
  • Suspended Animation Clock
  • CD/Boombox
  • Wired Emergency Light
  • Wired Thermostat

Wireless Hidden Cameras

These cameras transmit their video data via an on-board transmitter to a corresponding receiver.

  • Button
  • Screw
  • Baby Monitor Stuffed Puppy
  • Motion Detector
  • Wall Clock
  • Exit Sign
  • Desktop Speakers
  • Vanity Mirror
  • Carbon Monoxide Detector
  • Wind Tunnel Fan
  • CD/BoomBox
  • Utility Box
  • Air Wick Air Freshner
  • Tissue Box
  • Smoke Detector
  • Emergency Light
  • Wall mirror

Hidden Camera Systems

  • Portable Cigarette Lighter
  • Mini Desk Clock
  • Sunglasses
  • Key Chain
  • Small or Large Spot Light
  • Motion Detector
  • Rearview Mirror
  • Electrical Outlet
  • Air Freshner
  • Air Purifier
  • Exit SIgn
  • Wall Clock
  • Alarm Clock
  • Boombox
  • Desk Lamp

Check out Security Camera Kings hidden camera equipment Web pages for more information or contact one of our security experts if you have any questions.

 

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High Quality Hidden Camera

Written By:
Friday, February 18th, 2011

There are situations when designing your digital video security and surveillance system that you should consider using a high quality hidden camera. These cameras come in a variety of types, shapes, and sizes and connect to your system just like any other digital video security camera.

Today’s technology has allowed the digital video camera to be incredibly small and still produce a full-size high quality video image. Because of this, a high quality hidden camera can be disguised or concealed in just about any object. This is important when effective covert security and surveillance monitoring is required because the key to success is not being detected.

It seems as though there are almost as many high quality hidden camera models available as there are non-hidden models. As usage becomes more popular and demand increases, so does the variety of objects arrive on the market with these cameras embedded in them.

Most high quality hidden cameras use a 3.7 mm diameter lens and a 1/4″ or 1/3″ sensor. The sensor is what the lens focuses the light image on. It is also what is used to convert the light image into a potential electronic digital video image. There are two different sensors and every camera uses one; the Charged Coupled Device or CCD and the Complementary Metal Oxide Semiconductor or CMOS.

The rest of the internal working parts of a high quality hidden camera are just electronics. “Just electronics” doesn’t mean to lessen the sophistication and power of the technology, rather electronic technology as exponentially increased in the past several years. “Just electronics” means to imply that although there is a lot of circuitry, it can be accomplished by using very small Integrate Chip (IC) chips in a small amount of space.

Security Camera King offers a vast supply of high quality hidden cameras, hidden camera systems, and wireless high quality hidden cameras. The following is just a partial list of the items we offer:
420 TVL Motion Detector Camera. This is a high quality camera hidden inside a motion detector casing.
420 TVL Smoke Detector Hidden Camera. It looks just like a smoke detector; it functions as a high quality hidden camera.
Wired Color Sprinkler Hidden Camera. This camera looks like a commercial ceiling sprinkler that puts out fires.
Hidden Pen Color Camera with Audio. Now this is compact digital video technology and then pen actually functions as a pen.
Black and White Button Camera. This is an excellent example of the micro-small compact technology available today.
Black and White Screw Camera. Talk about small! This camera looks like the head of an ordinary Phillips type screw.
Hidden Watch Color Camera with Audio. Even James Bond didn’t have one of these!
Black and White or Color Wall Clock Cameras. Perfect for covert monitoring in the home or office.
Black and White Cordless House Phone. This unit has the camera hidden in the base. It also has a special high-power transmitter that can send the wireless video signal almost 2500 feet to the corresponding receiver.
Black and White CD/Boombox Camera. A fully functional music device with a camera inside.
Color Alarm Clock Camera. Think someone’s in your bedroom that shouldn’t be? This is a fully functional alarm clock.
Black and White Thermostat Camera. This unit does not function as a thermostat; it just looks exactly like one. It comes with an 8-hour rechargeable battery.
Color Emergency Light Camera. You’ve seen them before; the dual back-up power lights except these contain a high quality hidden camera.
Wireless Dog Baby Monitor Camera. Excellent for monitoring baby or toddler without the presence of a “scary” looking camera.
Wireless “EXIT” Sign Black and White Camera. Right this way folks, and please smile on your way out.
Color Wireless Motion Detector Camera.
Wireless Black and White Vanity Mirror. This camera activates when the mirror is touched; now that’s innovation.
Wireless Desktop Speakers. Full functioning speakers, but with a hidden camera inside. Great for use with computers.

This is just a partial listing of Security Camera King’s high quality hidden cameras. To see a complete line up of our products or to seek information on a specific model visit our “Hidden Security Cameras,” “Wireless Hidden Cameras,” and “Hidden Camera Systems” sections under “Security Cameras” on the navigation bar on the left side of our Web page.

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Hidden Camera With SD Card

Written By:
Wednesday, February 9th, 2011

There are times when covert camera monitoring and recording are necessary and one of the best devices for this purpose is a hidden camera with SD card. Thanks to recent technological advances in the computer world as well as in general electronics, a camera can be made as small as to fit in the shell of an average writing pen.

When it comes to the appearance of a hidden camera with SD card, there are many types from which to choose. These cameras come in “bare-bones” mini versions, where the camera is basically undisguised but is small enough to be hidden, to disguised versions that look (and often times function) as clocks, mirrors, safes, stuffed animals, and many more.

But what exactly is a hidden camera with SD card and how is it able to work? We’ll answer those questions and more in the following article.

The secret behind the success of the hidden camera with SD card is its incredibly small size. Another technological feature is its relatively low demand for power consumption. Yet another is the ability to save digital video images to an SD card, a relatively small device that can pack a big punch in memory capacity these days. Let’s start from the beginning.

A digital video security camera system works by capturing color digital video images with the camera, transmitting those images to the Digital Video Recorder or DVR unit, and saving them on the DVR’s hard disk drive and or displaying them on a monitor. Technically, a monitor is only needed for the system to set it up; that is, fine tune and adjust initial settings. However, if the user wants to monitor the digital video live (or later) the monitor will be needed. The important point here is that a digital video system can consist of just a digital video camera and DVR.

Basically that’s exactly what a hidden camera with SD card is; a digital video camera with a DVR. The key component of the digital video camera is the sensor that is used to create the digital video image. One of two different types of sensors, a Charged Coupled Device or CCD or a Complementary Metal Oxide Semiconductor is used. Generally speaking, a CCD provides the highest quality image at the price of power consumption while a CMOS provided a good quality image at a much lower demand for electrical power.

As technology continues to increase, the power demands for the CCD become much less and the quality for the CMOS becomes even better. Since many hidden cameras with SD card are standalone units placed inside other objects to disguise their appearance, power consumption may be an issue. For that reason many hidden camera with SD cards use CMOS sensor chips.

Although the CCD and the CMOS work a little differently, they both produce the same outcome, a relatively high-quality digital video image. They do this by transferring light images into electrical impulses. These impulses can be measured and compiled into data that creates a digital video image.

One of the most impressive features of digital video cameras is that they can produce these high quality digital video images with a CCD or CMOS the size of a square that is only 1/4 inch! In addition, a wide angle lens is usually used to focus the image on the sensor and these lenses are often as small as 3.7 mm in diameter. Obviously, the small sensor chip and lens combination “paves the way” for camera to be used in other devices as a hidden or disguised camera.

After the camera has created the data for a digital video image micro-circuit technology take over from there. First, an on-board analog-to-digital converter chip transfers the analog data into digital data. Then another circuit compiles and condenses the data to create a digital video file. The digital video file is saved by the DVR, however this cameras DVR records to an SD (Secure Digital) card instead of a hard disk drive.

SD cards are non-volatile memory containers that are used in many electronic devices such as cameras, cell phones and MP3 players. All the user has to do is remove the SD card, plug it into their computer, and download the digital video file created by the hidden camera with SD card.

On-board power for hidden cameras with SD cards may be supplied by a battery, or the camera may actually tap into the power of the device in which they are hidden.

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CCTV Digital Camera

Written By:
Monday, January 31st, 2011

If the Digital Video Recorder or DVR is the heart of a digital video security system, then the CCTV digital camera must be the eyes. The cameras used today are top-notch technological wonders that provide high quality color video images. The have a vast selection of optional features that make their use extremely flexible and easy to use under almost any application.

A Closed Circuit Television or CCTV digital camera are the eyes of a digital security system because they are the devices that “see and capture” the action. There are many types of CCTV digital cameras available but they all “see and capture” using one of two similar methods. To describe how a CCTV digital camera works without getting too technical, we’ll tell you about their sensors and other parts of the cameras and how they integrate to get the job done.

Let’s divide the average CCTV digital camera into three parts: 1) The lens; 2) The sensor; and, 3) The analog-to-digital converter and all other supporting electronics.

The Lens
There are essentially two different type of lenses used in CCTV digital cameras. The first we’ll mention is the “fixed lens.” The fixed lens is so named because the focal length of the lens is stationary or fixed. This indicated that the lens as a definite range of focus as well as a fixed field of view. These lenses are excellent for cameras that are used in applications where the distance between the subject or object being recorded and the camera is usually constant. Examples of these uses include retail store shoplifting coverage, equipment monitoring, gate entrance monitoring, room surveillance, etc.

The varifocal lenses have a variable focal length. This means that these lenses can zoom in or zoom out on subjects or objects and be manually focused. This lens is a bit more expensive than a fixed lens. Applications for this lens would include uses where the camera position is changed on a regular basis or the field of view is changed often.

Either type of lens has basically the same function: Manipulate the light emitted by the image in the camera’s field of vision, so that it presents an incredibly high quality image that is focused on the cameras incredibly small sensor.

The Sensor
There are also two different type of lenses used in CCTV digital cameras. They take the focused light image and convert it into tiny electrical charges that can be used to create a digital video file or image. The two sensors used are the Charged Coupled Device or CCD and the Complimentary Metal Oxide Semiconductor or CMOS. At one time the CCD produced a high quality image than the CMOS at a slightly higher cost in price for the sensor. The CMOS on the other hand, used far less electricity to complete the task of creating the electronic video image. As time and technology progresses, the newer CCDs use less electricity and the newer CMOSs produce a higher quality image so that they are relatively similar in power usage, quality and cost.

Whether it’s a CCD or a CMOS, the sensor, with the help of supporting electronic circuitry, pass the image which at this point is in analog format, to the analog-to-digital converter.

The Analog-to-Digital Converter
CCTV digital cameras produce their finished product, the video image, in a binary or digital format. Since the equipment used along the way to produce the image does so basically using analog methods, the analog-to-digital converter is necessary to transform the analog signal into digital data. This converter is usually a relatively small Integrated Circuit (IC) chip that is designed specifically for this purpose. It must be very powerful and extremely fast in order to convert the signal for use in real-time (live).

When the signal leaves the analog-to-digital converter, it is now in digital form and ready to be sent to the DVR and/or monitor. This is done by one of two different methods as well. Either the signal is carried to the DVR using a video transmission cable (which in most cases is an RG-59 coaxial cable), or wirelessly converting the signal into a radio signal that can be transmitted for the camera to a corresponding receiver.

This should give you some working knowledge on how a CCTV digital camera works. If you need additional information or considering a purchase, please contact one of our security experts today using on-line “Live Chat” or by toll-free telephone at 866-573-8878.

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Infrared Wireless Security Camera

Written By:
Sunday, January 30th, 2011

An infrared wireless security camera offers the ease of do-it-yourself installation and the versatility of total darkness digital video recording. Weather you choose and indoor or outdoor type camera, these cameras can be mounted just about anywhere provided you can provide them with a power source to operate. In addition, infrared wireless security cameras do not require any other special add-on equipment to function.

Infrared wireless security cameras are used for many different applications. The following is just a short, partial list of some of those uses:
• Residential Indoor Applications. In areas that are not always lit, such as storage areas, garages, or any room that is dark. These cameras are excellent for use as baby monitor cameras.
• Industrial (and/or Commercial) Indoor Applications. In any area that is not well lit especially storage facilities, chemical or hazmat storage and use areas, retail store “back” rooms, night time exits and entrances, etc.
• Residential Outdoor Applications. Anywhere outside the house that you want to cover a perimeter zone that surrounds the house: Drive ways, garages or shops not attached to the main home, entrance gates, boats, and barns.
• Industrial (and/or Commercial) Outdoor Applications. Outside store perimeters, no-trespassing areas that may be difficult to patrol in darkness, night-time (or no-light condition) equipment operation areas, rooms and offices that are vacant at night, areas where money and other valuables are stored.

These cameras have the added advantage of performing as a normal visible light digital video camera when sufficient light is available and as an infrared light digital video camera when there is an insufficient amount of light. When the cameras are operating under visible light conditions, they provide a high-quality color display; and when operating under infrared conditions they provide a high-quality black and white or monochromatic video image.

As the description indicates, an infrared wireless security camera does not require the use of a video transmission cable. Non-wireless cameras must have an RG-59 coaxial or similar cable run from each camera to the Digital Video Recorder or DVR. This cabling can complicate installation and some users may feel that, although the cable can be hidden most of the time, when it is visible it can be obtrusive.

Infrared wireless security cameras use one of many different types of wireless technologies to send their video data to a corresponding receiver, or directly to a DVR unit that has a built-in receiver. One of the most popular wireless technologies used for this purpose is the 2.4 or 5.8 GHz technology due to its crisp, clear mostly interference free transmission/reception. (This is the same technology used on many landline-based wireless telephones.)

If the signal is received by a corresponding wireless receiver, the receiver is usually located near the DVR unit and is connected to it by a cable. Some DVRs made specifically for wireless applications have on-board receivers that “catch” the cameras’ transmission and relay it directly to the DVR for further processing.

Most infrared wireless security cameras radio technologies are based on something called a Line Of Sight range or LOS. An LOS range means the camera’s maximum transmission range is based on LOS. This means the camera’s maximum transmission is specified based on a situation where there is an unobstructed view (or LOS) between the camera and the receiver. Although obstructions do not usually cancel the transmission, they do reduce the maximum range based on their material composition.

The interesting thing about infrared wireless security cameras is that they are intrinsically sensitive to infrared radiation. The digital video camera uses one of two sensors, a Complimentary Metal Oxide Semiconductor or CMOS or a Charge Coupled Device CCD, to convert light images into electrical signals that create digital video images. Both of these sensors can detect not only visible light, but infrared light of the near-infrared wavelength. Furthermore, the cameras’ sensors can “see” the infrared light, but the human eye cannot. There for the light used for infrared illumination is literally invisible to the human eye.

Infrared wireless security cameras normally used infrared Light Emitting Diodes or LEDs to create the illumination for the camera. These LEDs may be configured in an array surrounding the camera lens, off to the side, or entirely separate on an infrared “illuminator.” Generally, the more LEDS the longer the range of capturing in total darkness conditions. For that reason, always check the specifications before purchasing the camera to make sure it meets your required range.

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