Micro & Mini Recorders & Small Cameras

Posts Tagged ‘tv’

Quickly Access Your Security System Through the Keychain Remote

You’ve just settled down for a good night’s sleep and as you’re drifting off, you wonder whether or not you armed your Home Security Alarm system.  If you don’t have a keychain remote access, you’ll just have to throw off the warm covers, walk through the cold house to the security system control panel, and double check it.

If you do have a keychain remote access, you can simply arm or disarm your security system with the touch of a button from almost any room in the house, or from outside the house as long as you are not too far away.  The small keychain remote clips to any key ring.  You can keep it with you at all times. 

Put it with your car keys so you never forget it or lose it.  As you’re pulling out of the driveway, you can quickly and easily arm your home security system from inside of your car, making your morning routine go much smoother.

Clip the keychain remote to a lanyard to protect vulnerable loved ones inside your home, too.  If you live with an older relative who doesn’t get around easily, they can keep the remote with them at all times so they have complete safety at their fingertips. 

The remote features a “panic” button much like a car’s remote alarm system, so if help is needed right away, the user simply pushes the panic button to send a signal to the alarm.  This gives you peace of mind whether you’re at home or not, knowing your loved one has the home security system right in the palm of their hand.

The convenient size of the keychain remote doesn’t compromise the size of the buttons you push to turn the home security system on and off.  Don’t you just hate it when the buttons are so tiny you can’t use them? 

This remote’s buttons are easy to use and clearly labeled, so you know you’re pressing the right keys.  It’s unlikely to go off in your pocket or purse, though, minimizing the risk of setting off a false alarm because a button was pushed accidentally.

Remote wireless access to your home security system is a must to make it convenient to use.  The main wireless remote that hangs on the wall allows you to program paging features so the system can notify you if it’s sounded an alarm, or to let you know a family member has arrived home safe and sound.  The wall remote allows one-touch access to the monitoring center, where dispatchers call the appropriate emergency personnel on your behalf quickly and effectively.

The key pad with paging system offers you the assurance of life-saving help at the touch of a button.  When your system is installed, make sure you ask several questions about how to use these features to contact the fire department, police, or ambulance services.  The one-touch connection is a powerful additional feature of the home security system.

Use the remote keychain access whenever you need the convenience of accessing your alarm from almost anywhere in your home.  It works together with the wireless remote that hangs on your wall, making a smooth, easy-to-use system that blankets you with protection.

About the Author

ADT is America's number-one home security provider. Help protect your home and family today with high-tech security equipment and round-the-clock monitoring from ADT Security Services.

KEYCHAIN REMOTE CONTROL $90.42 KEYCHAIN REMOTE CONTROL

Keychain Remote Control System $24.99 While safely sitting in your car, turn on your home's lights with the simple press of a button on your keychain remote.

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Learn How To Transfer DVR To DVD In No Time

To not miss your favorite daytime soaps, you record and save them into your DVR (Digital Video Recorder) to be viewed at a more convenient day and time.  However, storage in your DVR is not inexhaustible.  You have a choice of either erasing your older recordings, moving them out of your DVR into DVD (Digital Video Disk) or miss the latest on who did what to whom.  If you opt for moving out, you are at a quandary as your DVR doesn't come with a DVD recorder.  All is not lost as you can easily learn how to transfer DVR to DVD without too much of a headache.

An alternative to throwing out your current DVR and buying a new DVR with an in-built DVD recorder is the less costly option of purchasing an external DVD recorder.  When shopping around for a DVD recorder, it's important to test and buy one that gives you quality picture and sound of the final DVD.  Buy the correct type of recordable DVD media of quality as the cheaper ones are prone to defects and tend to cause frustration when they jam during recording or lousy output.

Let's move on from purchasing to connecting.  Stay focused, this is going to go fast.  Assuming there is prior connection from your entertainment media provider, may it be cable, satellite or antenna, to the DVR.  Connect the DVR to the DVD recorder, via audio and video cables, from the source's output ports, namely the DVR, to the target's input ports, namely the DVD recorder.  This method allows you to directly transfer earlier recorded or currently broadcasted shows to be burned onto DVD media.  A slight drawback to this method is that you have to know what the show is about.  Otherwise, you may be blindly sending unwanted shows for burning into DVD, thus wasting your media.

The solution is to obviously to watch the shows as they are sent from the DVR to the DVD recorder. Get another set of audio and video cables to connect the DVD recorder to the television.  In similar fashion as above, connect the DVD recorder's output port to the television's input port.  You can then easily halt the burning if the show's not worth recording to DVD.

Once you finish burning the desired shows into the DVD, the last step is to finalize the DVD before removing it from the DVD recorder.  Skipping this step may prevent the DVD from playing on other DVD players.

As you can see, it's not an impossible task to know how to transfer DVR to DVD.  Assuming you followed the rules but still can't see the recorded shows when playing the DVD media, it's possibly due to the television stations imposing some form of data protection on their channels and programs.

 

About the Author

Stuart is writing for many websites, He enjoys writing on wide range of topics such as how to transfer dvr to dvd and How To Record A Show From DVR To A Computer. You may visit for more details.

USB DVR (4 Video + 2 Audio Channels) $37.79 ​Overview:USB DVR device that turns your computer into an inexpensive AV-IN video recorder or surveillance sysPrimary Function: Audio and Video USB Capture DeviceMedia Source Inputs: 4 video channels, 2 audio channelsSuggested Source Devices: Security Cammeras, Surveillance Cameras, Mini DV Camcorders and HD Video CamerasTelevison, DVD PlayersSpecification:Dimensions:15.75in*1.89in*0.79in Weight:2.82oz

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Dish Network Hdtv Dvr Receivers- Now Get One Free

When you subscribe to DISH Network you'll get a free satellite TV system along with free installation in up to four rooms of your home. But did you know you can also get a free DISH Network HDTV (high definition TV) receiver, or a DVR (Digital Video Recorder) receiver to boot?

Here's what you get:

DISH Network HDTV Receiver

A DISH Network HDTV receiver allows you to view HD broadcasts, assuming of course you have an HD compatible TV set, giving you an almost lifelike picture. The HDTV receiver also broadcasts the audio portion of the program in Dolby Digital Surround Sound for a three-dimensional listening experience.

This receiver features HD and SD (standard definition) tuners so you can receive both HD and SD broadcasts, and an EPG (electronic program guide) so you can see what shows are on satellite TV.

DISH Network DVR Receiver

A digital video recorder is a hard drive unit that sits inside a DVR receiver. The DISH Network DVR receiver can digitally record up to 100 hours of satellite TV programming, plus it allows you to pause live TV so you can get a snack or answer the phone, then play the show you were watching when you're ready.

The DISH Network DVR receiver features a dual tuner so you can record two programs at the same time, record one program while watching another program, or record two programs while watching a pre-recorded program. It also features Picture-In-Picture so you can watch two shows at the same time.

DISH Network HDTV DVR Receiver

If you want superior picture and sound plus digital recording capability all one unit then for $199 you can purchase a DISH Network HDTV DVR receiver. This receiver gives you all the features of the two receivers mentioned above plus you can record up to 200 hours of programming.

The Bottom Line

If you want to watch satellite TV with the best picture and sound available, and you have an HD television, then you'll want to get DISH Network's HDTV receiver. If you want to digitally record all your favorite programs then you'll want to get their DVR receiver. And if you want the best of both worlds - the best picture and sound plus the ability to digitally record your shows with the touch of a button - then DISH Network's HDTV DVR receiver is what you're looking for.

Visit http://www.thesatellitetvguide.com/dish-network-hdtv.htm for more DISH Network HDTV information including DISH Network HDTV programming, HD receivers, and ordering information.

About the Author

USB DVR (4 Video + 2 Audio Channels) $37.79 ​Overview:USB DVR device that turns your computer into an inexpensive AV-IN video recorder or surveillance sysPrimary Function: Audio and Video USB Capture DeviceMedia Source Inputs: 4 video channels, 2 audio channelsSuggested Source Devices: Security Cammeras, Surveillance Cameras, Mini DV Camcorders and HD Video CamerasTelevison, DVD PlayersSpecification:Dimensions:15.75in*1.89in*0.79in Weight:2.82oz

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The Lessons That Must be Learnt From Whitehaven's Digital Switchover

Whitehaven in Cumbria, North West England today (17 October 2007) became the first town in England to have its analogue television signal switched off.

At 0200 British Summer Time the BBC2 analogue signal was switched off. The other analogue channels will be switched off on 14 November.

Whitehaven is being closely watched. The process being followed here is the model for the digital switchover to be followed by the rest of the UK between 2008 and 2012.

The selection of Whitehaven as the first English town was announced in June 2006. Since then there has been an intense programme of public information including letters to every household, public briefings, posters, radio and TV commercials and information drop in points.

Despite this massive public information and media campaign, Digital UK, the organisation responsible for managing the digital switch over, can only say that they think "that probably 90% of homes in Whitehaven are ready for the change". With 25,000 householders in the area that still leaves 2,500 that will be unable to access any television channels. It seems breathtaking that Digital UK can only say that "probably 90%" will be ready particularly when Ofcom report that almost 85% of all households in the UK can already receive digital television. Television is now a part of the fabric of our society. Such a major, centrally imposed change demands very tight scrutiny and control.

Judging by reports in the Sunday Times and the Mail on Sunday, most Whitehaven residents welcome the change. They look forward to the greater flexibility and programming options that digital provides. Most question the cost - "If the government are going to make billions selling off the airwaves why can't they do more to help pay for the transition?"

Good Question.

We think these concerns will only increase as many people have still to upgrade secondary televisons and video or DVD recorders.

A particular shock for many homes will be the loss of many portable televisions. Most portables are used in kitchens and bedrooms and get their signal through the attached aerial. Digital requires a much stronger signal. Indoor aerials do not receive sufficient signal for use with set top boxes so all portables potentially need connected to roof mounted antennae. The alternative is to buy, not only the obligatory set-top box for every tv and recorder, but also a powered signal boosting aerial with built in siganl amplifier.

Nevertheless, for the majority of households in Whitehaven the digital switch over seems to be going smoothly. Residents welcome the greater range of viewing choice and interactive options that digital television brings. For the 10% or so still to upgrade there is still time. The local electrical retailers and aerial erectors will be rubbing their hands with glee.

About the Author

Keioni writes on the Digital Switch Over for the web site www.thedigitalswitchover.co.uk. Whitehaven is the test site for the roll out of digital television across the whole of the UK. For more information visit us at The Digital Switch Over now.

Thomson ANT1500 Indoor Digital Antenna $32.99 Frequency Band: VHF, UHF Eliminates constant adjustments you just need to hang it, stand it up or lay it flat Receives HDTV broadcasts up to 1080i with higher quality images and more dimensional sound free Satellite HDTV HDTV Antenna HDTV 10.40" Height x 10.40" Width x 0.78" Depth ANT1500 www.rca.com Designed for maximum signal reception including HDTV, SDTV and FM radio formats, this flat digital TV antenna has a sleek home theater design that can be hung on a wall right behind your flat panel TV. Up to 40 Mile RCA ANT1500 ANT1500 Indoor Digital Antenna RCA

Indoor Outdoor Digital Thermometer Humidity Hygrometer (CEG8113) $10.99 FeaturesThis is a brand new digital thermometer hygrometer which shows in/outdoor thermo-hygrometer as well as relative indoor air humidity. Ideal for both indoor/ outdoor home use.SpecificationLCD Display: 55mm DiagonalCelsius / FahrenheitMax/Min Temperature Memory2 sensors for Indoor/outdoor (or 2 different temperature environments)Indoor Temp Range: -14 to 122 degF (-10 to 50 degC) Outdoor Temp Range: -58 to 158 degF (-50 to 70 degC)Humidity Range: 20%~99% Relative HumidityTemperature accuracy:+/-1.8degF(+/-1degC)Humidity accuracy: +/-5%RHTemperature resolutoin: 0.1degBattery: 1 x AAA (Not Included)Unit size: 10*6.5*1cmWeight: approx. 71g

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Security Dvrs for Surveillance and Safety From Apexcctv

In the early days, video from multiple security cameras were recorded using time-lapse VCRs and multiplexers. Due to recent advancements in recording technology, digital video recorders (DVRs) have started replacing many VCRs and multiplexers. DVR security camera systems record video on a hard drive-based medium, eliminating the need for a videotape. These sophisticated systems have the ability to manage multiple cameras as well as record and playback video locally or through the Internet.

Before choosing a DVR, decide how many cameras you want to connect to it. The video recording rate, which is calculated in frames per second (fps), should also play a major role in your buying decision. For high-end security systems, opt for a DVR that has a high recording rate; however, a camera with a low recording rate would be sufficient to meet most security needs.

There are two types of DVRs, PC-based models and stand-alone units. ApexCCTV offers both. PC-based DVRs come with 4, 8, 12, 16, or 32 camera inputs. These security DVR systems convert analog signals to digital signals and compress them. The compressed data is then stored on a hard drive for archiving and playback. By entering the date and time using their on-screen menus, PC-based DVR systems allow you to search and easily retrieve images and videos of any point in time.

You can access a DVR surveillance camera system from a remote location using any TCP/IP network or dial-up connection. The video that the security camera systems capture can even be viewed with client software. The PC-based DVR has the added advantage of allowing you to connect more cameras when you install multiple DVR cards in your computer. These capture cards are available from INOX, AverMedia, and GeoVision.

You can also opt for stand-alone DVR systems. It can be operated by the simple push of a button and does not require the use of a PC. They come with 4, 8, 9, or 16 camera inputs. Because their video is compressed less than PC-based units, stand-alone DVR security systemsoffer better picture quality. They have a single circuit board with software that is encoded on their chips. The software of these DVR surveillance systems is often more stable than PC-based DVRs.

Standalone DVR units are very efficient when used for home security. They allow you to monitor your security cameras while you watch TV. They also include an IR remote that lets you control the live video from your security camera. If you want to record and store this data, then get a stand-alone DVR model that includes a hard drive.

Security DVR systems provide detailed images and crystal clear video that do not degrade. They also allow you to record video for a longer period of time and let you pause the video without distorting the picture. To upgrade your surveillance system, a DVR from ApexCCTV is a great choice.

About the Author

ApexCCTV committed to you and recognize that customer service is the key to success. We do our best to nurture a business philosophy of continual improvement, known as Kaizen. The key elements of Kaizen are quality, effort, involvement of all employees, willingness to change and communication.

KWorld 4-Channel 120 fps PC DVR Capture Card & Surveillance Software $270.99 Turn your PC into a Pro-Grade Security DVR with this amazing DVR Card and Software from KGuard. Include's the latest KGuard Surveillance Software! This powerful software has all the features the pros require, yet it's simple enough for anyone to install and use. It's easy to install. This card simply plugs into a PCI slot on the back of your computer. Then you can connect all of your cameras to it. Once your cameras are hooked up, just install the software and you are ready to record and view your cameras. Plus when you purchse your card from us you get FREE Lifetime Technical Support too! Choose a card that has enough video inputs to cover the maximum number of cameras you need to use. Computer/Cameras not included. This card can view and record a total of 120 fps. That means that if you are using 4 cameras, then you will record 30 images per second. If you use 8 cameras, then you record at 15 fps each (120 divided by 8).

AVerMedia AVerTV HD DVR Video Capture Card $108.99 The AVerTV HD DVR - is a High Definition / Analog video capture card. It s equipped with HDMI input and through the included Dongle Cable, users will have Component, S-Video and Composite Video input interfaces as well. This Allows users to connect to their Cable / Satellite Set-Top-Box, Gaming Console and HD Video recorders to capture High Definition and Analog video content on their PC. The package includes our AVer MediaCenter software application with advanced software encoding algorithm engine and built-in schedule recording features. Users can capture HD video up to 1080i, and save it in MPEG-2 or H.264 file format (which can be used to playback on your iPod or PSP gaming device) as well as program start and end times of TV shows from your HD Cable / Satellite Set-Top-Box.

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All-round Portable Digital Video Recorder-great Guard in Life

What’s new in Globeoffer? Let’s go to Globeoffer new products. Multifunction Gps DVD players Car love fans, Mini pen DVR for detectives and various kinds of music watch player for all people. What I recommend today is an all-round portable digital video recorder.

This wireless portable DVR features portable hand size fixed, flexibility, simple operation, High-Definition video effects, video recording clearly. it also extends to great infrared functions ( suitable day/night working ), When you want to record in the night or ray is not bright, press the infrared Light Switch, then the Infrared Work Indicator will light on ” Green”, and the machine will record the video in white and black.
It records in hours and in turns, max 2GB memory to recording voice and video simultaneously. Small device great functions.

This machine can be used as below condition and more:
Police patrol
It is widely applied in the traffic enforcement and mobile police affairs of corresponding agencies.
Police patrol, help the police record the outside landscape of the vehicle and the conditions when driving and the relevant incidents. It supplies the insurance company with the evidence of claims.
Meeting recording
Help the secretary to record the whole meeting in voice and video,  never miss any important points, replace the traditional record way through pen and paper.
Report visiting
Great assistant to journalists, this portable DVR can help them to record the vivid interview. Traditional voice recorder is out of date. New digital video recorder has been the good partner for journalists and reporters.
Room surveillance
It also can act as security camera in home surveillance. It will keep an eye on your room undetectablely when your house is invaded by burglar.
While you are out for activity, out for picnic or on the beach, this Portable DVR can take the role of a digital Video Camera, help you record the happy moment. It is convenient to connect the PC via USB cable and transfer data of the device directly. Take it in pocket, quickly snap exciting moments anytime anywhere.

About the Author

interesting in consumer electronics and gadgets, like car dvd players, car monitors, car mp3 players, stylish mp3/mp4 players, camera and camcorders.

Mini Spy Car Key Chain Camera DVR Video Audio Recorder $15.99 The car key Chain mini DVR is the smallest DVR in the world until now ,it is 15g only, but the video still very clear and vivid even if you are moving when you record video because it is 100% 640x 480 pixels and 30 frame/second.

dvr mini inalámbrico (Ypy-282) $122.03 dvr mini inalámbrico (Ypy-282)

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Sunglasses Camera Sunglasses DVR Spy Sunglasses Camera DVR Wholesale Security Camera

Sunglasses DVR Camera is the newest and most advanced spy camera with built in Video Recorder in the world. Unlike other device of this type, This sunglasses records everything you see and hear, without connecting to MP4 or other Recording source. 
 
Sunglasses DVR Camera Features
 Capture video for evidence 
 Cool sunglass shape
 Great for surveillance and Investigation 
 Quality Polarized Sunglass Lens from brand named manufacturer. 
 1.3 mega pixels pinhole CMOS hidden camera for clear digital recording. 
 User friendly operation button for easy control.
 Sleek and elegant design looks good on both men and women users.
 A must have hidden camera and highly recommended device for journalist, traffic police, travelers, etc. 
 Easy connection with PC/Laptops, no driver needed 
 Built in 2G memory for up to 5 hours of video recording. 
 Extended memory slot for TF/Micro SD card. 
 Real time recording, never let memorable moments sneak away. 
 

Sunglasses DVR Camera Technical Parameter 
 Power Supply?built-in 550mAh li-polymer rechargeable battery 
 Power duration: 4-5 hours 
 Power Adaptor: 5V DC/500 mAh 
 Built-in 2GB memory, support TF card Max 2GB 
 Camera hardware resolution: 1.3m pixels.
 Reading Speed > 700kbs, write >500Kbs  
 Resolution?640*480  
 Playing Speed: 30fps 
 Audio?Stereo 
 Power Consumption: <0.4W 
 Video Format: 3GP
 Card Slot: TF/Micro SD card 
 *Physical weight 39g with battery 
 Working Temperature: 0 C - 60 C 
 Storage Computer: -20 C - 80 C 
 -Operating System: Win98?WinMe, WinXP, Win2000, Windows Vista
 -Accessories?USB cable, User manual  

About the Author

Omejo technology (Hong Kong) Co., Ltd

Motion-Activated Camera Recorder DVR $350 This Motion Activated Mini-Security Recorder is compatible with any camera and records up to 10 Hours on to a Secure Digital Memory Card. This versatile DVR gives you choices, just like full size DVR?s from Manual Record, Scheduled Record, Motion Detection Recording, Time and Date Stamp all packed into one small device. The Video is stored on a portable SD Card. Video can be viewed directly from the Security Recorder using a TV or through Windows Media Player by simply removing the SD Card and placing it into your computer's Card Reader. (Supports 256 MB Card or above, not included)The Motion-Activated Mini-Security Recorder IncludesMotion Activated Security Recorder2 Audio/Video CablesAC Power AdapterManualQuick Installation GuideSize2 1/2" x 3 1/2" x 1"

DVR Camcorder Pen Camera Recorder $200 The Covert 4Gb DVR Camcorder Pen Camera Records Hours of Audio and Video with Just One Click. And It Even Writes! One Touch Color Digital Recording Looks and Functions Like an Ordinary Pen 4Gb for up to 30 Hours of Video and Audio Recording Upgrade to 8Gb for 60 Hours of Recording, or the 8Gb Audio Activated Version Direct USB Connection to PC Over 2 Hour Battery Life Available Models:4Gb (30 Hours) at Video Size 352 x 288 Resolution 8 GB (60 Hours) at Video Size 640 x 480 Resolution 8 GB Audio Activated (30 Hours) Video Size 1280 x 960 Resolution The world's first mini DVR Camcorder Pen Recorder that is both a camera and recorder that looks, feels, and writes like a normal pen. Just press the covert button on the pen and record all the action. Or, upgrade to the audio activated version for no-touch recording and a new level of covert recording. To watch video, simply plug into a standard USB port. No drivers or outside power source needed. Press the button to begin recording. Plug the pen into the USB port of your computer to download video. Watch/Save the recorded video on any computer. Perfect for covert recording at your next business meeting or interview. Uses For The Hidden Pen Camera Video Recorder: Sting operations Law enforcement Journalists Office meetings Conversations Home / Office security Features: High resolution recording Photograph / webcam / audio recording device Four-in-One Wire free and portable Built-in DVR for easy recording Plugs directly into your computer for fast review & transfer Car adapter for charging on-the-go Includes: 1 Pen Recorder USB Charger/Transfer Cord    Audio Activated Pen Camera Recorder (8GB), 1280 x 960 Resolution: Highest Quality Portable Audio Activated / One Touch Spy Camera Built Into Ordinary Looking Pen 4-In-1 Surveillance: Camera, Camcorder, Web Camera, Audio Recording In One One Touch Color Digital Recording Looks And Functions Like An Ordinary Pen Records Up To 30 Hours Continuous Direct USB Connection To PC For Easy Transfer/Review Features: High resolution recording Photograph / webcam / audio recording device Four-in-One Wire free and portable Built-in DVR for easy recording Plugs directly into your computer for fast review & transfer Car adapter for charging on-the-go Specifications: Recording resolution: 1280 x 960 pixel Recording frames: 30 FPS Image ratio: 4:3 Recording format: AVI Video encoding: M-JPEG Time setting: Optional user set Photo resolution: 20

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Making the Right Choice While Looking for Cctv Security Camera

There are normally six things to look at before Selecting a CCTV security systems;

1. Camera Selection

2. Recording Options

3. Detection

4. Time and Date Stamping

5. Cable and Connectors

6. Camera Protection

1.0 Camera Selection

1.1 Location

Is the camera to be located indoors or outdoors? If outdoors then you need to ensure that it is appropriate for the environmental conditions that are likely to be encountered such as rain, snow, sun-glare, low light etc. Outdoor CCTV camera security systems Outdoor cameras should either be classed as weather resistant or mounted in a special enclosure to provide protection. All CCTV outdoor cameras provided by Voltek are weather resistant and the cable entry points are sealed. The leads are of sufficient length to enable connections to be made inside the building.

1.2 Light Levels

Choosing the right camera based on the amount of available light is very important for an effective security system. An ordinary colour or even monochrome camera will not give very good pictures in low light conditions although the monochrome will perform better than an equivalent colour one. Solutions available for low light conditions can include:

* B&W cameras with built in IR illumination

* Colour Day / Night cameras

* Use of additional security lighting

* Use of a separate IR illuminator in conjunction with a monochrome camera. When using IR illumination ensure that the range of the illuminators is adequate for your needs.

Light levels are usually measured in lux and although full daylight can be around 10,000 lux, dusk can be as low as 1-10 lux, complete darkness is 0 lux and side street lighting can also be less than 1 lux in some cases. The closer a camera is rated to 0 lux the better its performance in low light levels.

1.3 Colour, Black and White or Day Night Cameras

B&W cameras generally provide better image quality than colour ones at lower light levels. They are also usually cheaper than colour ones of equivalent specification. Colour cameras require the availability of good lighting and will generally provide better recognition capability. Day Night cameras provide the best of both worlds in an external environment. They operate as colour cameras during the day (or in good light conditions) and automatically change to B&W when the light levels drop. All Voltek Day Night cameras are supplied with built-in Infra-red illuminators which enable the cameras to see in darkness.

1.4 Wired or Wireless

Wireless CCTV cameras are easier to install. There is no cabling to run from the camera to the receiver and they are ideal for temporary applications, rapid deployment or where running cable is not desirable. TheDay Night wireless Security CCTV cameras cameras do however require a power source and whilst most will have the capability to be powered by batteries these do not have a very long life - a matter of hours in some cases. Wherever possible the cameras should be powered by the mains. Typical range for wireless camera systems is 100m free-space but this can reduce significantly to around 20 meters in a typical household environment. In some cases there is also the potential for interference when using wireless systems.

1.5 Visible Deterrence or Covert / Discreet Monitoring

For visible deterrence the use of larger cameras housed in traditional enclosures are ideal. For covert or discreet applications Voltek supplies Discreet or Covert Cctv Security Cameras that are:

* Very small and can be installed in covert locations, or

* In enclosures designed to disguise the presence of a camera.

Many of the cameras manufactured by Voltek are both stylish and discreet in the design of their enclosures and this makes them very suitable for domestic applications.

1.6 Audio

If the ability to monitor or record sound is important then the camera needs to have a built-in microphone. This enables one-way audio monitoring. Some cameras such as the SuperCam2 from Voltek have a 2-way speech facility that enables you to speak with your visitor without answering the door.

1.7 Camera Viewing Quality

The resolution, size and type of camera sensor will influence the quality of the viewable image.

Resolution – This is expressed as the number of television lines (TVL) that the camera is capable of producing. The higher the TVL value the greater the resolution and hence the quality of the images. A typical entry-level camera will be around 300 TVL with higher resolution cameras having a value of 400+ TVL.

Size – A larger image sensor will give a better image definition than a smaller sensor. For example, a 1/3” image sensor will produce a better image than a 1/4 ” sensor.

Type – There are 2 types of image sensor. CMOS sensors are mass-produced and used in entry-level cameras to provide cost savings. CCD sensors are used in professional CCTV cameras and provide a higher quality image.

It is important to remember that the quality of the recorder also influences the quality of the CCTV footage. For example, if you use a high-resolution camera but a low-resolution recorder then the CCTV footage that is captured will still be of low resolution.

1.8 Single Camera or Multiple Camera Systems

Do you need to protect and view a single area or multiple areas? If you are likely to require protection of additional areas at a future date then consider buying a system that can be expanded as and when required. Voltek has a range of products that will allow you to connect and use up to 4, 8 or even 16 cameras. These include:

Switchers - These are units that enable a multi-camera system to switch between the various cameras. The switching can be done in a number of ways:

* Manually by the user

* Automatic sequential switching between cameras

* Upon detection of movement by a PIR camera.

Multiple Security CCTV cameras with Switchers The cameras are connected to the switcher and the output from the switcher can be viewed on a TV or it can be connected directly to the recording device such as the VCR or DVD recorder. CCTV switchers can typically allow connection of upto 4 or 8 cameras. The Spectrum control units from Voltek also have additional built-in functionality such as automatic video activation and time and date stamp. It is important to remember however that using a switcher will only allow you to view and record one camera at a time.

Standalone DVRs - Use of digital video recorders allows single or multi-camera systems to be viewed and / or recorded simultaneously.

Voltek supplies a range of 4, 8 and 16 channel DVRs allowing you to install a very comprehensive cctv system.

PC-Based Security Systems - These make use of a PCI card that is fitted inside your computer. They will allow connection of upto 4, 8 or 16 cameras and help turn your existing PC into a sophisticated cctv system.

2.0 Recording Options

If you want to be able to record your CCTV footage then the following factors need to be taken into account:

* Maximum length of recording time required

* Quality of recording

* Method of recording:

o Continuous

o Manual

o Event Led - i.e. when your system detects motion

* Recording Equipment

o Analogue

o Digital

* Capability for storage, retrieval and transfer of cctv footage

2.1 Domestic VCR

This is a simple and low cost option that can provide good quality footage recorded in real time. VCRs can be used to provide continuous recording of up-to 8 hours or event led recording when used in conjunction with a PIR camera and a VCR activator. When using PIR cameras to carry out event led recordings you need to consider the start-up time for the VCR. For example, if the recorder takes a few seconds to actually begin recording each time it receives the signal from the camera then the event may have elapsed before it is recorded (a person walking across the camera range may have passed the field of view before the image is captured on tape). In these situations a separate PIR detector could be used to trigger the recording and overcome this problem. The other thing to bear in mind is that you cannot set the VCR to record a TV channel whilst the camera input is selected.

2.2 Domestic DVD Recorder

These operate on a similar principle to the domestic VCR but offer the additional benefits of:

* Higher quality digital recording

* Increased storage capacity

* Improved search and retrieval capability

However, for disk only recorders the start-up time before recording actually commences is generally longer than a VCR. To overcome this it is recommended that recorders with a built-in hard drive are used

2.3 Standalone Digital Video Recorders

These are rapidly becoming the most popular method of recording CCTV footage. Essentially a DVR is a standalone piece of hardware that is designed exclusively for recording CCTV footage. It has a number ofDigital Security camera recorders clear advantages over the traditional analogue systems and these include:

* Storage Capacity – Days, weeks and even months of high resolution recording is possible through use of large capacity hard drives

* Consistent Quality Recording – No deterioration of image quality no matter how many you overwrite onto the recording device or how long you store the images for

* Viewing and Retrieval – Quick and easy access of footage due to digital format

* Transfer and Storage – The digital format allows ease of transfer and storage of footage. Transfer and storage capability is further enhanced by DVRs with built-in CD writers and USB ports.

* Remote Access – Many DVRs have the capability for remote access from anywhere in the world through use of a remote PC

* Multiplexed Recording – Capability to view and record multiple cameras simultaneously.

2.4 PCI Cards

These are digital video capture cards that can be fitted inside your existing PC to allow the connection of multiple CCTV cameras. The functionality and benefits of PCI cards is very similar to that of DVRs.

3.0 Detection

Even with systems that have a very long recording capacity, it is not always desirable to record continuously. Event-led recording is a more efficient means of capturing relevant footage and can be achieved by:

3.1 PIR Movement Detectors

Some cameras have PIR detectors built-in and for those that don’t it is possible to install a separate PIR as part of the overall system. In multiple camera systems with PIRs the footage that is being displayed on screen will automatically change to the area that has detected movement.

3.2 Video Motion Detection

This is used in digital CCTV systems and works by analysing the video signal from a camera. Changes in signal are recognised as movement and subsequently used to trigger recording if required. All Voltek digital systems allow users to mark one or more rectangular areas within the display screen and only when motion is detected within these areas will the system begin recording. Where possible, use of PIR movement detection is preferable rather than video motion detection, as it more reliable particularly for external use.

4.0 Time and Date Stamping

This feature superimposes the time and date onto your CCTV footage. Having this feature can be really useful to identify when an event occurred and was recorded, particularly if the footage is to be used for evidence purposes. For domestic systems Voltek offers a separate time and date generator that can be added to your system. The Spectrum control CCTV securyty cameras has this facility already built-in. The facility is also integral to all the Voltek range of digital CCTV systems.

5.0 Cable and Connectors

Security camera wires connectors Cameras can be connected in a variety of ways. All our domestic cameras are supplied with 20m of cable and scart and / or phono plugs to connect directly into your TV, VCR or DVD recorder. All our professional cameras are supplied with 20m of cable and BNC connectors that will plug into our range of digital recorders. The Voltek camera leads can be extended upto 100m in total by the use of appropriate extension leads. Co-axial cable with a local power supply to the camera can enable the camera to be sited upto 250m away from the monitor or recording device. Detailed information on connectors and cable for each of the Voltek cameras is available on the relevant product page on the website.

6.0 Camera Protection

If your camera is likely to be a target for vandals then consider protecting it with one of Voltel wire cages is a Security camera wire cages

must. This not only saves your Security cameras from Vandalas but protects any evidences collected during the vandal acts.

We at For your Home along with Voltek really hope the following guide will help you in selecting the perfect security cameras for Your Homes and Gardens

About the Author

We at For your Home are well experienced in helping you make better homes and gardens. You are always welcome to visit our better home and garden online store at http://www.foryourhome.co.uk and our complete home security CCTV cameras systems at http://www.foryourhome.co.uk/home-security/c/1115.html

Q-see QSDT4PCRC DVR Video Capturing Device - PCI $116.15 Q-see QSDT4PCRC DVR Video Capturing Device - PCI

Qsdt4Pcrc Dvr Video Capturing Device - Pci $118.47 turn Your Desktop Pc Into Your Own Surveillance System With This Q-see Pc Based Security Solution. The Qsdt4pcrc Pci Dvr Card Uses Software H.264 Compression For Maximum Storage With Little Loss Of Quality. This Dvr Card Stores Video Directly On Your Pc Hard Drive, Records Real-time Video For Accurate Monitoring, And Offers Multiple Recording Options Including Motion Detection. *Brand Name: Q-see [BY8743] UPC: 645439228719 UNSPC: 43201500 12L x 12W x 9H 2 LB

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VGA to DVI-D Coverter Converts Analog Video Signals to Digital Video Signals

Another item available in the category of video converters is the VGA to DVI-D Converter. This device is capable of connecting your VGA video source to digital DVI monitors or projectors. By converting the hosts’ analog VGA signal to a DVI-D signal, it allows the digital display device to be connected seamlessly. Supporting video resolutions up to 1600x1200, this conversion device is compatible with single link DVI, UXGA, SXGA, XGA, SVGA and VGA.

Its key features include easy installation, requirement of no special tools or software for immediate operation and output picture adjustment of brightness, contrast, color, RGB level and H-V position. By converting VGA to DVI-D signals, it has enabled users to connect computers equipped with HD-15 video connections, to the new DVI (digital visual interface) video display format. Working methodology follows simple plug and play functionalities. By connecting the VGA cable to the input side of the converter and then connecting the DVI monitor or projector to the DVI output, signal conversion between analog to digital is made possible. It automatically detects the input resolution while the output resolution and refresh rate can be selected through the On Screen Display menu and front panel push buttons.

The VGA to DVI-D Converter box has a VGA 15 Pin HD female input connector along with a DVI-D Single Link or VGA 15 Pin HD female output connector. The other type of Video Converter mostly used is DVI-D to VGA Converter. It also has an in built auto detect feature which helps in detecting the VGA resolution coming from the PC to the DVI-D video monitor. Regulatory approvals from FCC and CE have also been given to this device. It is designed in a manner so that it has two outputs, one to connect a DVI-D monitor and one to connector a VGA monitor to a computer with VGA output. An ideal product for applications where traditional analog video graphic cards need to be connected to DVI compliant digital monitors, it ensures that the connection between the VGA to DVI-D output works.

About the Author

Jennifer Luec is an acknowledged writer in this industry.
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Surveillance Dvr Software

Digital video recovering software or DVR helps in complete monitoring control and access from the computer. It is a personal video recorder which records video in a digital format on to a disk drive or some other format.

The video capture and playback to and from the disk is enabled by stand alone set-top boxes and software for PC. Some televisions are already come with DVR hardware and software built within the television. But for those who need to install should know what they are looking for.

The important features one should look for installing DVR software. Those are:-

? Motion Detection Function- various DVR software programs offer different levels of motion detection function and you should consider about them before selecting one. Choose that software which has the capability to detect movement as soon as any kind of movement is detected. One more option is there, you can go for software which allows the camera to remain focused on the object and help track it.

? Control and Configuration of Cameras- you should look for cameras which have properties to adjust the images on each camera. Though some basic software applications allow the system to automatically adjust images but are not as good as manually adjusting the cameras. Instead you can go for those programs which have functions like zoom, tilt or pan features.

? Maintenance of Alarm/ Event logs- software with facilities to record and track events which causes the surveillance system to be triggered. This will give a better understanding of the reason which caused the trigger. It would be better to choose such system.

? Storing and Search Feature- find out software which allows to store the video images being recorded as well as carry out searching by using certain criteria’s. This helps in reviewing the information recorded and could be stored much easier. All this characteristics make your software an efficient one.

To get a good DVR you should spend a little more time on research. You should find your software according to what your requirements are which will ensure you to use the maximum out of the surveillance system.

DVR programs are designed to get most out of your camera which is connected to your computer. This helps in checking your employees though you are far away from them. Apart from monitoring you can playback previous recordings of more than one camera and could be accessible to your computer.

About the Author

Global PC Consultants is one of the leading service providers for Laptop and PC repair in New York City(NY). Whenever you need reliable company for computer support and service or laptop repair and service in New York City (NY) mainly Manhattan, Brooklyn, Bronx, Queens, Long Island or Staten Island, we are the best choice for all your needs

AVerMedia AVerTV HD DVR Video Capture Card $108.99 The AVerTV HD DVR - is a High Definition / Analog video capture card. It s equipped with HDMI input and through the included Dongle Cable, users will have Component, S-Video and Composite Video input interfaces as well. This Allows users to connect to their Cable / Satellite Set-Top-Box, Gaming Console and HD Video recorders to capture High Definition and Analog video content on their PC. The package includes our AVer MediaCenter software application with advanced software encoding algorithm engine and built-in schedule recording features. Users can capture HD video up to 1080i, and save it in MPEG-2 or H.264 file format (which can be used to playback on your iPod or PSP gaming device) as well as program start and end times of TV shows from your HD Cable / Satellite Set-Top-Box.

Elgato Video Capture $84.99 Software Complete Product 10020840 www.elgato.com Transfer video to your Mac from a VCR, DVR, camcorder, or any other analog video device as an iTunes-ready H.264 or MPEG-4 file. Elgato Video Capture's easy-to-use software assists you through every step, from connecting an analog video source to recording the video on your Mac and choosing how you will watch and share it. Mac Intel-based Mac Turn Analog Video into iTunes-Ready Files: There is no easier or more convenient way to transfer home video to your Mac Elgato Video Capture records from analog video sources in the H.264 or MPEG-4 formats that are native to iTunes Your video is captured in real-time and no lengthy re-encoding is necessary; the video is immediately ready to sync with an iPod, iPhone, or Apple TV, to play in QuickTime, to edit in iMovie, or to upload directly to YouTube Put Family Memories on your Mac, and More: The era of VHS tapes is winding down, and after three decades there is a lot of video content to transfer for modern playback devices What?s more, any video stored on magnetic tape (such as VHS, Video8 and Hi8) has a limited life span and deteriorates over time Elgato Video Capture provides an easy way to bring those precious memories into iTunes, to edit them in iMovie, and to share on the Web Video to your Mac from a DVR, DVD Player, or Set-Top Box: Perhaps you?ve been given a DVD from a family event or reunion and you want to share it by posting it on your website or on YouTube you?ve saved some great movies and TV shows on your DVR and want to play them back on your iPod Elgato Video Capture can connect and capture video to your Mac from any device that has composite ?RCA? or S-Video outputs. It also comes with a SCART adapter Every step is made simple: Elgato Video Capture is very easy to use The software Assistant guides you through every step, from connecting an analog video source to capturing video that is optimized for the way you want to use it The software offers a simple tool to trim the beginning and end of the captured video It takes just one click to add your video to iTunes to sync with an iPod, iPhone or Apple TV; to play in QuickTime; to upload directly to YouTube; or to open in iMovie ready for editing Elgato Systems Video Capture Video Capture - Complete Product Video Editing Processor: Macintosh computer with Intel Core Duo Operating System: Mac OS X v.10.5.6 Leopard or later Memory: 512 MB of RAM Others: Built-in USB 2.0 port QuickTime 7.6 or later iTunes 8.1 or later Not Applicable Graphics/Multimedia Elgato Mac OS

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LCD TV Installations

LCD Televisions generally used where you want a larger screen size and wider viewing area. The primary advantages of LCD televisions are their wider visible range and their ability to display accurate tonal ranges and true blacks. LCD TV which are the first in the world to come with a built in Blu-Ray drive. The 52, 46, 42 and 37" models will offer Full HD resolution whereas the 26 and 32 inches will offer 1,366×768 pixels.

LCD TV Installations displays, by contrast, utilize electric charges to twist and untwist liquid crystals, which causes them to block light and, hence, emit blacks. The higher the voltage passing through the liquid crystals in a given pixel, the more fully those crystals untwist and effectively block light all of which makes these pixels darker. You can throw away the DVR as the built in Blu-Ray recorder can record up to 21 hours of HD content on a double layer 50GB Blu-Ray disc. Other features include digital tuner, 1 bit amplifier which powers the bottom mounted speaker.

LCD displays consume the most power when displaying a very dark or black image. This is a difficult process, and despite recent improvements in LCD black levels, only the best LCD displays have managed to topple the 500:1 contrast ratio barrier. The one continual drawback here for LCD is off axis viewing, when black levels consistently drops. Yet, while many are aware of the susceptibility of plasmas to burn-in, few realize that even LCD TVs have their own problems they suffer from a phenomena known as image sticking.

All the Digital TVs that include LCD television or plasma TV differ depending up on how many pixels per inch make up the image, number of scan lines over the screen and the aspect ratio. The aspect ratio shows how wide is the screen in relation to its height. In early televisions and standard digital televisions the 4:3 is the aspect ratio is still followed which means the width will be slightly longer than the height of the screen.

LCD TV sets, screen burn-in are probably one of the most debated topics by those in favor of LCD display technology. Though image sticking and burn-in yields practically the same visual impact on the display panel, yet these two phenomena are completely different in their nature. For more details http://www.av-setup.com

About the Author

Representing LCD TV Installations in the http://www.av-setup.com

Handheld HD DVR Recorder with Touchscreen $600 Product Overview:Connect the Handheld HD DVR Recorder to almost any camera for instant recordingTouchscreen DVR makes it easy to control recordingRecords in the highest resolution 1280 x 960 at 30 fpsCaptures video onto removable SD card for easy viewing and transferChoose from motion-activated, scheduled, or standard modes of recordingIncluded remote control lets you control the DVR from a distance to only record what mattersTouchscreen DVR Makes Recording Professional Surveillance Footage Fast & EasyThis Handheld HD DVR Recorder connects to almost any surveillance camera and allows for fast and professional grade recording. The high resolution Handheld HD DVR Recorder features touchscreen controls that make capturing up to 200 minutes of video footage onto a removable SD card, simple. Video footage can be reviewed on the HD DVR?s screen directly or you can quickly and easily remove the SD card for easy viewing on both Mac and PC. The added wireless remote control makes it easy to start and stop recording on-the-fly for fast and easy recording.Key Benefits:Records video footage and pictures in high resolution HDChoose from multiple recording modesOne button recording makes it easy to capture footage on-the-goRemote control makes it easy to start and stop recordingPocket size design lets you record footage without bulky equipment - perfect for recording footage from body worn surveillance camerasPlug & play technology records onto a removable SD cardEasily transfer your footage to any computer with the included USB cordFeatures:Records in True 720p recording resolution at up to 60FPS videoSaves photos in high resolution 720p (1280 x 960) JPG formatChoose between standard, motion activated, scheduled, or event recordingSimple touch screen interfaces makes recording very easyFrame counter and time stamp on all of the footageRemote control includedDVR is built to be small enough to easily carry yet still large enough to have a clear 2.36" 480x234 color LCD displayRecords to SD CardUSB connectionWindows and Mac compatiblePopular Uses:Use with a body worn camera for on-the-go covert recordingAttach to a wired or wireless camera for recording from a distanceA perfect accessory for law enforcement, private investigators, or consumersUse as a surveillance system with the motion activated or scheduled recording modesIncludes: HD Touch Screen Handheld DVR Wireless remote Wired remote HD connection cable USB cable AC adapter Protective carrying case Earphones

DVR with Built In LCD  $1959.95 Introducing the amazing new 40 GB DVR Package 3.5" TFT Color LCD Display 80 HR. MPEG 4 VIdeo ?pocket size? Digital Video Recorder. Smaller than a standard ?Walkman? type cassette player at an incredible 5.1? x 3.3? x 1.3? and weighting in at only 13 ounces makes this unit the perfect ?body worn? surveillance recorder.This Digital Video Recorder requires no cumbersome adaptors for RCA connection to your camera. Simply plug in your RCA video and/or audio source to the supplied connector cable. MPV-330 features an internal 40 GB mini 2.5? hard drive that record 80 full hours of real time color video (MPEG 4) and audio. Recordings may be viewed by the built-in 3.5 inch full color TFT LCD or an External Monitor or TV via RCA Output Jack. A full function ?business card size? IR Remote Control is included for ease of viewing.MPV-330 records for four hours per charge of the built-in rechargeable lithium ion battery pack. Unlike other units, the rechargeble battery is easily removable, so if you need addition record time in the field, a spare battery can be quickly installed for another 4 hours recording. The MPV-330 can also be utilized as an external hard drive to store or read data or image files via USB interface.Unit includes IR Remote Controller, AC Adaptor/Recharger, RCA Connector Cables, Mini USB 2.0 Cable, Earphones, User Manual, Lithium Ion Battery and Warranty.

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Xenon PH4104AV DVR Product Review

Xenon is an emerging star in the field of Video Security hardware.  Xenon makes a full line of high-quality security cameras, digital video recorders (DVR), and accessories.  The PH4104AV is the 4 channel version of their DVR with h.264 encoding, which greatly increases the efficiency of video data storage (h.264 is also used with Blu-Ray DVD).  Models with 8 and 16 channels are also available (PH4108AV, PH4116AV).   The specifications for the 8 and 16 channel models are similar to the 4 channel system, but multiplied.  The DVR includes support for either an internal SATA hard drive (max 1000 GB) and/or a recordable CD drive.

Product Design:

The Xenon DVR design includes an embedded microprocessor (ARM7) running a uClinux (pronounced “you see linux”) operating system.  The firmware is burned into flash memory, making it more stable and reliable than software programs running from a standard hard disk drive.   Software for managing large installations with multiple DVR systems, called “Centralized Management System” (CMS), is part of the package.  Data can be archived either over the network or over a USB (1.1) port.

The technology behind the DVR video processing is sourced from Techwell, a San Jose, California company that designs highly integrated video processing ICs.   The TW2700 is a RISC architecture microcontroller capable of real-time 4-channel video compression for security applications.  It can compress/decompress 4 full-size video data streams simultaneously.  Multiple TW2700 modules are used for the 8 and 16 channel systems.

DVR Features:

These systems can playback 4 channels simultaneously, making review of video much more productive.  For example, if we were reviewing video from a hotel, we could synchronize the 4 playback channels to watch a hallway, an elevator exit, the lobby, and finally the parking lot.  In this way we could monitor the travel of an individual through the facility.

A VGA output for connecting to a local monitor is included.  The speed of record and playback (NTSC) is 120 frames per second (fps).  Many installations will not need a local monitor except during startup and troubleshooting, since most functions can be accessed over a network.

The systems from Xenon are equipped with sophisticated motion detection analysis of the video image.  The software allows you to define active sensing regions of the viewing area, and the control of sensitivity.  Software analysis of video image for the determination of situation is called <i>Video Analytics</i>.  If, for example, a camera is monitoring a room at a time of day when there should not be any activity, if the camera detects changes in the scene, the DVR can automatically send an email and/or close a relay which could be used to activate an alarm.  Motion detected triggered recording is also possible, greatly increasing the efficiency of the storage in some environments.

The DVR family is fully “web enabled”, allowing you to view the data through Internet Explorer (currently Firefox and Safari browsers are not ActiveX capable, preventing compatibility) or a web enabled mobile device.  The Xenon interface allows control of most of the DVR functions, as opposed to some alternative DVR interfaces, which only allow monitoring of data, often not even allowing backup of data over the network.

The Negatives:

The documentation for the Xenon system, which was obviously authored by someone for whom English is a second language, and the graphics for the GUI, seem a bit awkward.  One of the evaluation units arrived setup for Chinese, and required instructions from Xenon’s tech support group to correct.   However, the negatives are easily outweighed by the positives.  Xenon’s tech support proved competent when needed.  This is a high quality system at a reasonable price.

DVR technology has improved significantly in the last few years.  A DVR that only recently was considered hi-tech and “state-of-the-art” looks surprisingly primitive today.  Prices are also much more reasonable.

Xenon PH4104AV 4 Channel DVR Product Description

CPU:  ARM 7

Video CODEC:  Techwell TW2700

OS:  uClinux

Interface:  GUI operation with IR controller, Keypad, and USB Mouse

Video Input:  4X (PAL/NTSC), BNC connector

Video Output:  Composite Video (1V P-P, BNC) and 1 x SVGA

Audio Input:  4X Audio in, BNC type

Audio Output:  1X Audio out, BNC type

Video Display:  1, 4 Spilt Screen

Video Standard:  PAL, NTSC

System Resource:  4 channel record, 4 channel playback, 4 channel simultaneous networking. Real-time Pentaplexer (Current Record, Playback, Live, Network)

Motion Detection:  16 x 12 grids per channel with 5 level sensitivity adjustment

Record Method:  Time scheduled, Motion Detection, Alarm, Manual

CMS:  Supports Central Management System

Compression Type:  Video only or Video combined with Audio

Video CODEC:  H.264 Baseline Profile, L3.1

Video Compression Rate:  2Mbps-4Mbps, Adjustable

Audio CODEC:  OggVorbis, 16 Kbps 

Audio Compression Rate:  64 Kbps

Video Quality:  30 fps

Local storage:  Supports: 1000 GB SATA HDD, CD-R/W

Backup:  Support USB Flash, USB HDD, USB CDRW

Network protocol:  TCP/IP, UDP, PPPoE, RTSP, RTP, SMTP, HTTP

Alarm Input:  4

Alarm output:  2, Email

LAN port:  1 x RJ45 with 10/100M

USB port:  1 x USB1.1

Pan/Tilt control port:  1 x RS485

Power:  110V-240V, 50Hz-60Hz

Power Consumption:  28W

Operation Temperature:  -10C-55C

Humidity: 10-90%

About the Author

Brian Bradshaw is a Video Security System Specialist in North Texas. For more information:
B.V. Technology Video Surveillance Systems

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Compression of Video and Audio Signals

Video compression

At present there are used a few compression methods. The oldest of them (JPEG, H-261, MPEG-2) use groups of pixels (covering some area, for example 8 bits x 8 bits). These methods don't analyze the actual structure of the image. This generation of compressors may be used in the case of lower resolutions when transmission speed isn't less than 64kbps.
More effective compression is offered by second generation of algorithms. These algorithms (e.g. MPEG-4) carry out a kind of scene analysis before realization of adequate compression procedure. They make out that image can be divided into fragments in more effective way. Image which consists of pixels with the same features can be divided into specific groups, and this operation significantly improves compression process. To achieve such analysis procedure, a model of human perceiving has been employed (HVS - Human Vision System) .
Typical second generation encoder consists of following modules: segmentation, motion estimation, outline and texture coding. The system offers compromise between compression rate and the quality of the image after decompression.

Video compression standards: H-261, H263

The H-261 system has been created for ISDN networks with 64 kbps bandwidth. The H-261 standard allows compression rates from 100:1 to 2000:1, however the higher compression ratio, the lower quality of decompressed image. The codec works in two modes: intra frame - INTRA and inter frame - INTER.

During the INTRA compression mode, the frame is being divided into blocks sized by 8x8 pixels. Then they are compressed using Discrete Cosines Transform (similar to JPEG).
In INTER mode, only changes which have been occurred between following frames are being saved. However, it has to be marked that at least once every 123 frames the compression in INTRA mode has to be carried out.
Development of H.263 standard has been meant to secure video signal compression for low bandwidth networks, about 28.8 to 33.6 kbps.
H-263 is a modernized version of the H-261 standard. In comparison with the original version, half-pixel motion compensation has been employed instead of pixel motion compensation. The header has been reduced, detection and transmission of error correction have been abandoned, and new optional modes of operation have been integrated.

MPEG-4 compression

MPEG-4 is the newest video compression standard which quickly becomes popular, also in the case of video streaming. In comparison with previously presented standards, it integrates effective methods for multimedia data.
New attitude consists in interrelation of data contents with the role for human perception, and extraction of so called audio-visual objects (AVO). There have been integrated solutions allowing scalability of data representation in many dimensions, that is space, time, quality and computational complexity.
The standard has been adjusted to many types of telecommunication networks and can operate at rates from 64 to 1024 kbps.
The concept of MPEG-4 allows transmission of single or several audiovisual AV objects from the sender to the receiver, however before the transmission begins, the initial exchange of information between the encoder and decoder has to be carried out. This way, the convenient algorithm classes and the tools essential for effective use of the link can be settled. Obviously, the coder protects audiovisual objects against errors.

Audio compression

Data stream from audio compression is significantly smaller than video data stream. However, the compression is normally performed to minimize the total bandwidth.
Simple reduction of link's bandwidth can be achieved by reduction of bit rate (sampling frequency) and reduction of amplitude resolution.

Depending on transmission type, various samplings are used:

Sampling frequency - Application

8.00 kHz - Telephony

16 kHz - Multimedia communication

22.05 kHz - Personal computers

32.00 kHz - Digital radio and television

44.10 kHz - CD - Audio

48.00 kHz - DAT cassette recorders, HDTV

96.00 kHz - DVD

This is not full version of article. Read more HERE

About the Author

Author is IT, CCTV and network specialist.
More information about CCTV, television, cables and antennas can be found on DIPOL web site.

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CCTV $66.51 Closed circuit television (CCTV) is experiencing a leap in technology using digital techniques and the Internet. The new edition of this high-level professional reference retains the particulars that made the first edition a success, including the details of CCD cameras, lenses, coaxial cables, fiber-optics, and system design, but it is expanded to cover all video compression techniques used in the ever increasing assortment of digital video recorders (DVRs) available on the market today. It also serves to clarify the technology of data networking. The theoretical section explains the various compression techniques, such as MPEG-1, MPEG-2, JPEG, Wavelet, H.261/263, JPEG-2000, MPEG-4, etc. Networking is also a new and unknown area for many CCTV installers and this is explained in a brand new section.The challenge of selecting the right system from such a wide variety of new technologies available in CCTV has been compounded by the advent of DVRs. This new edition of the book CCTV demystifies DVR technology. -Covers brand new digital video recorder (DVR) compression techniques, image quality, measuring and networking-Fully illustrated with dozens of photographs, tables, checklists, charts, diagrams and instructions-Encompasses CCTV standards for U.S., Europe, and Australia