6 Key Features to Check Before Buying a TV

!9# 6 Key Features to Check Before Buying a TV

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With a television being the focal point of a home entertainment system, you should be very careful when you are buying a new TV. Every year, huge numbers of television models with various specifications are launched on the market - LCD TVs, Plasma TVs, HDTVs, full HDTVs, CRT TVs, Micro-Display or Rear Projection TVs and OLED TVs. If you are looking to buy a new TV set and you are already confused about making your choice then consider the following important specifications:

How deep is your pocket?
The most important aspect while buying a television is probably the cost. LCD and Plasma televisions are more expensive than CRT televisions. Televisions with HDTV compatibility are more expensive in comparison to Standard Definition televisions. Before you go to buy a TV, check out the prices and compare them.

Number of Colors
Number of colors is one of the main features to be considered when buying a television. These days most televisions offer some 20 billion to 550 billion different colors. The number of colors reproduced determines the true-to-life quality of the image. Always go for High Definition if the quality of picture is important to you because it does justice to this feature.

Screen Size
Your viewing experience is directly related to the screen size. It is commonly known that the larger the screen the better but it is not so always. If you have a small room with a large TV, it will never be a pleasant experience. Screen size is primarily dependent on the size of the room. A 42-inch television set cannot be accommodated in a 10 feet by 8 feet room; rather it can fit well only in a 12 feet by 16 feet room. Any 34 inch television would work well for rooms measuring 10 feet by 8 feet. If you go for large-screen televisions, the minimum viewing distance should be around 7 feet.

Audio Quality
Sound quality is a very important factor - your best bet would be stereo with a simulated surround sound.  A HDMI or High Definition Multimedia Interface offers a digital audio and high definition video output through one port.

Resolution
Resolution of the television set is related to the screen size. The HDTV sets support different pixels. The HDTV compatible supports resolution of 1280 x 720 pixels, the HDTV broadcasts supports around 1080 active pixel lines with a 16.9 wide-screen format. The HDTV-compatible flat panels TVs can support 1920 x 1080.

Contrast Ratio
Contrast ratio is an important feature for superior picture quality. This ratio determines the difference between black and white, meaning that the higher the ratio, the darker will be the black portions and lighter will be the white portion when the contrast ratio is more. LCD TVs give a minimum contrast ratio of 500:1.

6 Key Features to Check Before Buying a TV

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1800securitycamera is your one stop shop for all your CCTV surveillance needs. We have a gigantic variety of CCTV products at a discount prices, like Infrared bullet camera, Infrared dome camera, digital video recorders, stand alone DVRs, power supplies, Bnc connector and accessories. We are direct importer of all our products. We Manufacture and Import directly from the source so you save. We have full in house sales and tech support for customers and offer Free ground shipping for order over .

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Q-See QSPDVR16 16 Channel Digital Video Recorder PCI Card

!9# Q-See QSPDVR16 16 Channel Digital Video Recorder PCI Card

Brand : Q-See | Rate : | Price : $499.99
Post Date : Nov 03, 2011 09:07:56 | Usually ships in 1-2 business days

QSPDVR16 is a PCI Card installed in a PC that will display and record live video from the camera connected to the Harddrive in PC.·The maximum display/recording rate is 100 fps under PAL format, and 120 fps under NTSC format. 1-16 channel video input, 1/4/6/8/13/16 screen display modes are available. Multi alarm triggering method: sensor alarm, motion detection, video loss, and ·HDD sources shortage. Supports schedule recording mode. Video compression format: MPEG4. 5 level recording quality options available, and the recording frame rate range from 1 to 30 fps adjustable for each channel. Recycling recording method available. Support multi-channel playback, searching by time/date and recording events, images can be zoom/capture/save/print/backup. Support remote surveillance and PTZ control through web browser, support dynamic domain name.

• Recording Rate 120 FPS NTSC / Display at 480 FPS
• MPEG4 Compression
• Record Mode: Motion/Sensor/Schedule/Manual
• Software Included for Internet Monitoring / Networking
• Input Connector: BNC

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DVR Security Camera Systems

!9# DVR Security Camera Systems

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Security is one of the major issues in today's life. A DVR (Digital video recorder) security camera system is used to provide security. A digital video recorder (DVR) is a device that accepts analog signals from a security camera, converts it into digital format, and stores it on a hard drive (or on some other media). DVR also has a user interface to manage the captured videos. A DVR system also allows you to do setting of motion detection feature and controlling of PTZ security cameras. A DVR device used for security purpose is called as DVR security system.

A DVR security system records the video signals transmitted by a CCTV camera. These signals are then used for documentation and detection procedures. DVR security cameras transmit digital signals to a hard drive or a DVR security camera recorder. DVR security cameras have many features such as motion detection, night vision, remote access, ease of use, but the most important one is easy navigation. This feature allows you to jump to any video without rewinding or forwarding. Earlier security cameras used to transmit analog signals to a video tape recorder (VCR). Digital recording and storage definitely has advantages over analog signals.

A DVR security camera system has following advantages:

· In DVR security camera systems, recording quality is excellent. The images captured are very sharp and clear.

· Recording can be done on a hard disk so no need to buy and change the tape frequently as hard disk can store much more data in comparison to a tape.

· Automatic recording

· Low or almost no maintenance is required.

· You can record the data on a DVD, which can be erased whenever you want.

· Allows easy search of the video based on time, event or date.

With all the above mentioned advantages, a Security DVR system has some draw backs also. The draw backs are:

· Due to high compression rate, digital video occupies lot of space on the hard disk and hence the hard disk is easily filled up. There are few DVR security cameras systems, which uses motion detection feature to solve this problem to an extent. Motion detectors alert the camera for deciding the compression rate of the picture (that is when a picture with high compression is required and when with low compression).

· The other drawback with DVR systems is image distortion. Image distortion occurs, if the camera adjustment is not done properly at the time of set up.

· Output of DVR security camera systems can be a problem. Different DVR security cameras may require different software to view the file. Some DVR security cameras require codec installation to view the files. Some DVR cameras require a media player which is supported by that DVR security camera system. In some cases, DVR security camera system has its own media player and solves this problem.

DVR security camera systems are latest in surveillance technology. These cameras provide good quality pictures and videos. DVR security cameras are cost-effective. So if you are concerned about the safety of your family or business and want to safeguard your family then go for a DVR security camera system.

DVR Security Camera Systems

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SVAT CV301-8CH-008 8-Channel H.264 Smart DVR Complete Surveillance System (Includes 8 Indoor/Outdoor High-Resolution CCD Night-Vision Cameras)

!9# SVAT CV301-8CH-008 8-Channel H.264 Smart DVR Complete Surveillance System (Includes 8 Indoor/Outdoor High-Resolution CCD Night-Vision Cameras)

Brand : SVAT | Rate : | Price : $499.99
Post Date : Oct 18, 2011 16:09:13 | Usually ships in 1-2 business days

SVAT CV301-8CH-008 8-Channel H.264 Smart DVR Security System with Coaching iMenu (Includes 8 Indoor/Outdoor High-Resolution CCD Night-Vision Cameras)

• H.264 video compression allows recording of more than a month of footage
• Advanced motion-activated recording with multiple automatic or continuous recording combinations and schedules
• DVR retains user-set schedule when power is interrupted
• Customizable display modes-single and quad

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Q-See QS408-5 8 Channel H.264 Smart Recording DVR with Pre-Installed 500GB Hard Drive

!9# Q-See QS408-5 8 Channel H.264 Smart Recording DVR with Pre-Installed 500GB Hard Drive

Brand : Q-See
Rate :
Price : $240.00
Post Date : Oct 08, 2011 10:50:10
Usually ships in 1-2 business days

This 8 Channel DVR is apart of Q-See's superior line up of DVRs. This multi-functional DVR serves as an extra pair of eyes when you are away from your home or business. The QS408-5 uses the latest technology with H.264 video compression, providing excellent image quality while using minimum hard drive space. This DVR is great for connecting to a VGA, LCD, or a TV to get crisp, clear images. You can conveniently manage multiple cameras from anywhere in the world with remote internet monitoring. Have the peace of mind of knowing your product includes free lifetime technical support!

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Video Surveillance Systems Cost Profile

!9# Video Surveillance Systems Cost Profile

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Two Technologies

In short, there are two generations of technology for video surveillance systems. They are the old analog system and the modern Internet protocol (IP)-based system, respectively. The criterion of demarcation, which are analog and IP is not attempted in this article clearly and to eliminate confusion. The biggest confusion is the calculation of the two technologies and the relative effectiveness of them. This article attempts toprovide a more precise big picture of cost benefits to people who are considering a video surveillance system for their organizations.

Three Cost Areas

There are 3 major cost areas as far as the installation of video surveillance system is concerned. System design is another cost area although some organizations apply common layman sense in lieu of engaging consultants for design.

o Cameras at various specified locations of the organization
o Cabling fabric connecting cameras to the monitoring centre
o Video Footage recorder at the monitoring centre

Cameras

Roughly an IP camera is 5 times the cost of an analogue camera. What does the big extra price offer to the customer? Top of the list is clarity. The maximum clarity of an analogue camera is lower than 800 x 600 dots of resolution (called VGA) on a display screen. An IP camera provides 1280 x 1024 dots (Super VGA) and this resolution is about 3 times higher than VGA. There are IP cameras with VGA resolution and they are cheaper than SVGA. There is no analogue camera with SVGA as VGA is the limit imposed by analogue production technology. The higher resolution means higher clarity. It allows IP camera footage to be used by the police to track down criminals or to cover a wider geographic area. An IP camera also consists of computer chips to give them some level of intelligence. The intelligence allows us to talk to the camera at the monitoring centre or over the Internet.

Cabling Fabric

IP camera uses standard and low cost computer cabling system for connection whereas analogue camera uses co-axial cable which is more expensive and being phased out. Cabling is very site dependent but it is certain that IP has cost advantages in many respects. One important implication is the potential for integrating video surveillance into standard information system networks for operation and maintenance.

Video Recorders

With the advent of low cost PC systems, most Digital Video Recorders (DVR) for analogue cameras have turned to PC based these days. They do not look like PC and cannot be opened or modified like a standard PC. These Recorders use electronics to convert analogue signals from the camera to digital on an individual camera basis. The design of DVR is therefore dependent on the number of these converters built in. Common numbers are 4, 8 and 16. If you install a DVR with 16 camera capacity, you will need to buy another DVR when you want to install the 17th camera at a later date. IP based video recorders do not have this limitation and the maximum number is whatever the software people set for their software design.

Cost Profiles of Two Technologies

We provide some cost-benefit information of 5 types of surveillance systems herewith. We use the maximum camera number of the system as the index and the cost per camera as the indicator. The cost per camera (NZD) does not include cabling or site work as they cannot be easily assumed.

At the low cost and low benefit end are 2 DVR systems based on analogue cameras with 720 x 576 resolutions. The cheapest one can handle 4 cameras max and the next one up is for 8 cameras max.

The other 3 systems are IP based. They are for 12, 32 and 64 maximum cameras respectively. The price goes up gradually.

Interesting Observations

The price of IP-12 is higher than analogue-12 if the latter exists. However, it is utmost interesting to note that the cost of analogue systems will go up very fast at the level of 32 or 64 cameras if such systems exist. If we use 2 DVR systems of 16 cameras each to get 32 cameras max, the total cost would be cheaper than one IP-32 system. However, some people prefer having one system to two or multiple systems from an operation and maintenance perspective.

The graphs (not shown in this text based article) are meant for illustrating the effect of camera number in the system on the cost of the system. We wish to summarize into 3 observations below.

o Cost per camera goes up with the number of camera. This is a phenomenon most people do not expect. In fact, the benefits also go up because larger systems provide a better economic basis for development.

o IP appears to be more expensive than analogue if we ignore the maximum camera limitation and forget about benefits.

o It is fair to say that analogue systems would be adequate for very small sites, and IP system should be given preference for bigger sites.

Video Surveillance Systems Cost Profile

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