What Is a DVI Extender?

A DVI (Digital Visual Interface) is a video connector designed to transport uncompressed digital video data to a digital display device, like an LCD screen or monitor. A DVI extender is used to extend the distance between a DVI display and a DVI-based computer.

Background to DVI Extenders
Older computer monitors were CRT (Cathode Ray Tube) displays. A CRT is an analog device dependent on an analog signal sent from computers through an internal graphics card to the monitor. The graphics card translated the data sent from the computer into an analog signal which was then displayed on the CRT monitor screen. Eventually, these CRT monitors were replaced by a new technology in video presentation, the LCD digital monitor. That's when DVI connectors came into the picture eventually followed by the DVI extender.

The early representation of the digital monitor was the Liquid Crystal Display (LCD). Consumers loved these monitors as they were much thinner and lighter than the CRT displays. However, when LCD screens were first introduced there needed to be some way to accept and adapt the analog signal to ensure backward compatibility with the majority of available computers setting on desktops. In order for the data to properly be presented on the LCD screen, the analog signal had to be converted into a digital format.

A group of computer industry leaders called the Digital Display Working Group (DDWG) developed a specification to provide this backwards compatibility. This specification defined that the DVI connector should accommodate both analog and digital interfaces. The initial implementation was the DVI-I (DVI-Integrated) connector. As computers transitioned away from the analog graphic conversion cards, a different connector DVI-D (DVI-Digital) was specified and it handles only digital signals.

DVI Over CAT5 - Distancing the Monitor
In most cases, a computer is within a few feet of a monitor. However, there are many scenarios where there is added benefit keeping the computer a distance away from the monitor, for example in computer rooms, testing environments, classrooms, hospitals, airports, shopping venues, or any area where it's better to keep the computer away from the general public. A DVI extender makes this possible by extending the distance of the DVI display from the computer. A type of network cable, called Cat5/Cat5e/Cat6, connects the two devices.

Using DVI over CAT5 extender, the monitor can be as much as 300 feet away from the computer. The picture delivered by the DVI over CAT5 is clear and without loss of signal or degradation. In fact, screen resolutions as high as 1920x1200 are supported using the DVI extender. CAT5 DVI extender units are delivered as a paired product with a transmitter and receiver. The transmitter connects to the source and the receiver connects to the DVI monitor.

Find the best deals on DVI Extender and DVI over CAT5 products at KVMSwitchTech. Call our support team Toll FREE and get your questions answered before you spend money on any other product. Our video extender products are used in to support military, government, education, digital signage, as well as, commercial and medical applications.

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How To Copy Videos to DVD

if you are like the rest of us, a quick glance into the closet towards that box in the back brimming with a collection of videos gathering dust in their obsolescence. With time, the deterioration of these tapes will begin and you will be stuck with miles of useless tapes that no one can ever watch again. The simple and smart thing to do with these would be to convert them all into DVD format. DVDs quality does not degrade with time and once you have converted them you will never again find yourself swearing as you fish tape from the inside of your VCR.

The simplest method of transferring VHS to DVD would be to attach the video and audio out lines from the VCR straight into your computer. The video can be saved to the hard drive as you watch it one last time as VHS and then it can be later saved as a DVD. Problem solved.

It might be wise to run and watch the VHS on your VCR and then through an editing program on your computer. Doing so will allow you to fine tune the output effectively neutralizing any imperfections in the taped recording or the effects of aging on the magnetic tape. Editing programs are widely available as free downloads on the internet and can turn most VHS tapes that have seen better days into rejuvenated versions that will entertain you for years to come. There is a lot to be said for storing a hundred DVDs in a storage rack versus a hundred VHS tapes in a huge cardboard box you can barely move let alone sort through.

One thing to consider when converting VHS to DVD would be the resolution issue. If the resolution during the conversion is reduced by up to half of the normal settings, you will be able to fit 2 or maybe even three movies onto one DVD. The quality of the movie won't be effectively reduced and there still is a lot to be said about storage space, even with DVDs.

There are also services available that will convert your VHS tapes to DVDs at a fairly reasonable price. One would be however be well advised to check with their policies and pricing before you cart 100 pounds of VHS tapes and hope for the best. All in all, the process of converting video to DVD is a simple procedure for anyone computer savvy, even if it is time consuming.

Do you want to copy videos to DVD? Visit our website to find perfect video to DVD converter....

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Network Technology Improvements

To benefit from the central resources and communications, a remote user usually has at least one wide area connection to the central site. The bandwidth requirements for the wide area connection depend on the kind of network services that the employers want to use in their job. If remote employees are part of the IP telephony network, a call manager device may need to be placed remotely. The network architect must think through whether the remote users need access to video resources concurrently. This kind of access will impact bandwidth. For instance, streaming video may be used for a business meeting. These design decisions involve evaluating the bandwidth at the central site wide area connection as well.

Selecting a Permanent or On Demand link

The net architect chooses whether it is superior to use permanent or on-demand links to the central location. The architect works with the client to consider security, cost as well as availability requirements.

A high-speed Internet link is a good choice for outworkers. It is easy to install in remote offices and is also available in many hotels. Occasionally, asynchronous dialup links are the one and only remote access solution accessible to travelers. Personnel who travel can use a laptop with a modem and the current telephone net to connect to the enterprise.

Wide area network connections at teleworker sites can use the following technologies: Asynchronous dialup, ISDN BRI, Cable modems, DSL, Wireless and satellite, VPN, Traffic Flow.

Traffic flow on a net is analogous to the car traffic flow on metropolitan streets. Vehicles move from one place to another throughout the city. Data traffic created from applications moves from one place in the net to another. The route is usually defined by a Net Layer TCP/IP address. Depending on the quality of service policies configured in the net, the route can be influenced by additional factors like Transport Layer source and destination port numbers. Let's say, a host sends a request for a shared folder to a server in one traffic flow. The server examines the request and if the user has the expected permissions, returns the data to the user in another traffic flow.

Traffic Control

Without a method of traffic control, like traffic signs or alternative roads to retain the flow, traffic on the highways becomes congested. Nets also need a path to regulate traffic flows. Quality of service mechanisms are created to guarantee the smooth traffic flow of application data traffic on the net.

Traffic flow is very important for all the networks and this is what really differentiates a good for a bad network.

Manolis Skoras is a Cisco, Microsoft and HP Certified Trainer and systems-network engineer. Recently he created a blog about IT exams to help his students and people around the world to better understand the material they will be tested on, thus having greater success rates. Check Certify4Sure today!

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Useful Tips for Buying Used Personal computers

Within this modern era, hi-tech devices that have become expensive like the computers is usually replaced with less expensive ones.

Such cheap pc's mostly come by using used computers. Used computers is located in abundance in this used computer warehouses in various places, even from your area of the prospective buyer's residence. However there will be no guarantee of quality when investing in an used computer. The customer has to take his own personal risk in completing this task. But, if the buyer is ready to spend some cash in upgrading the exact level of the used computer and also some time checking the quality of the used pc before purchase, it will save him from loss. Used computers can save a bundle for the buyer when compared to buying a different computer. There are numerous who cannot afford to get a new computer such as students who do not have any source connected with income but certainly require computers. Intended for such people, used computers come to be a boon.

Also, used computers need not always be second hand computers. They can also be recertified or refurbished computers. Refurbished or recertified computers are those, which are checked for any faults, if any corrected and sold with a warranty ensuring the working condition of the computer to be perfect. Hence, such computers are considered to be the safest form of buying an used computer. Refurbished computers can be bought from many of the online stores at very less prices. Quality computer manufacturers also sell such kind of recertified or refurbished computers. However, certain measures need to be taken while buying such kind of computers. more information visit Computer Tips site to read more information

That prime aspect to become considered while investing in an used or refurbished computer is to discover a good printed one. There tend to be various companies which sell used computers or refurbished pc's. The main advantages for opting for a branded one is that it includes a warranty and also the customer can be sure that the parts used are of top quality.

While buying used or refurbished computers related software documents, licenses and paperwork have to be got from the seller as this will avoid stolen computers being passed off as used computers to the buyer. If possible working for some time on the used computer will determine its efficiency. Most of the reputed dealers would certainly allow the purchaser to make use of the computer for a shorter period to check the quality previous to purchase.

While checking for the efficiency of the used computer, it is good to check if the booting process is smooth, as most of the problems occur during booting and also to check all the sound drivers, video, graphics, monitor, mouse, keyboard etc. CD drives and hard disks also need to be checked. Another aspect is the support system offered for any used computer if technical or non-technical, support staff capabilities and the quantity of support staff which determine the caliber of service offered. If the purchaser is unsatisfied, he can very well think of yet another choice.

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