DVR cards

A DVR card looks quite similar to the common computer video card in many PCs. However, when it comes to functioning, there are a lot of differences between them. DVR cards come with software that can be used to display and record information from multiple cameras at the same time. These are installed in computers to allow them to function as digital video recording (DVR) systems.

DVR cards are mostly used in surveillance systems to process the information received from a source such as a camera and pass it on to a storage device like a hard disk. In such a set up, there is more than one video out port. At these ports, the output from the security cameras is plugged in to the card. Once installed inside a computer, the card becomes active and is instantly recognized by the machine thanks to the accompanying software. Once properly installed, this card allows the user to digitally record signals on to his hard drive and then view it instantaneously.

Depending on need, you can also choose the quality of storage. DVR cards frames per second (fps) ranges are 30, 60,120,240 and 480. The fps also determines the time for which recording can be done. For a hard disk having 80 GB disk space, at 30 fps one can record for 320 hours. Similarly, at 120 fps, for an 80 GB hard disk drive, one can record for up to 80 hours. If you have a 960 GB hard disk, you can record for a whopping 3840 hours at the rate of 80 fps, which translates into 160 days or nearly 5 months.

Only a limited number of cameras are supported by the old DVR cards (launched nearly two years ago). If more cameras were needed, more cards had to be installed. This led to an increase in the workload of the computer that was unable to meet the memory demand and resulted in a system crash. Modern cards come with enhanced inbuilt processing power that reduces the burden on the computer.

With unmatched features, DVR cards have come to symbolize a much needed technology intervention in the field of surveillance and monitoring. In the coming years, with advanced features, DVR cards will completely replace its conventional rival.

Digital Cameras

Photographs are treasured all over the world. These images immortalize our happy memories and occasions. Cameras have been in use since ages, from the days of black and white photographs to more modern color ones. However, the conventional camera has one major drawback. It needs to be reloaded with new film when the roll runs out. This might prove to be a problem, especially if a person is on the move and film is not readily available. Moreover, film cannot be exposed to light, as all the images stored in it are likely to be destroyed. Because of all these shortcomings, digital cameras have emerged as a viable solution for photographers.

Digital cameras have bought about a significant change in the world of photography. These cameras offer the highest quality images, something, which cannot be matched by a conventional camera. The image quality or resolution of a digital camera is measured in pixels. A million pixels make up a megapixel, which is used to denote the power of a digital camera.

Digital cameras store images on a miniature memory chip instead of on film. In most modern digital cameras, the image captured can be instantly previewed on a small liquid crystal display (LCD) screen. The memory of a digital camera will vary, depending on the price of the unit. However, replacing the existing memory card or adding a new one can increase the memory. All digital cameras let the user transfer the images onto a computer for easy viewing and editing.

Most digital cameras come with an optical and digital zoom mode. The former is operated by an outward moving lens, which facilitates sharp, clear and close-up photographs. The latter is an in-built software that edits the edges and automatically enlarges the center of the image. However, photographs taken using digital zoom are of an inferior quality as compared to optical zoom.

When buying a digital camera, several brands and their features should be perused before making the purchase. A fixed budget should be kept in mind and a camera with the best features within the price range should be picked.

Casino Slots

Casinos introduced slot machines for the wives and girlfriends of gambling husbands with the intention that men would get more time to spend on gambling. In recent times, the game has become very popular amongst both men and women visiting the casinos. Instant jackpots and ease to play are some of the reasons why increasing number of people are drawn towards slot machines.

Casino slots can be classified into straight slots and progressive slots. Straight slots have set jackpot payouts according to the machines payout schedule. For instance, if playing on a straight quarter slot, winning a jackpot by betting on a quarter will give 200 coins, a two-quarter bet wins 600 coins, and the jackpot amounts to 2000 coins. On the other hand, progressive slot machines have jackpots tied into a bank of machines, a carousel of machines, or even other machines at a different casino. The progressive jackpot is displayed on an electric board, which is attached to the progressive slot machines. Further more, the progressive jackpot increases with every play on each slot machine of the progressive group. The payouts on progressive slots can reach to extremes and can range from several thousands to multi-million dollar payments.

A casino has many other attractions such as the 3-reel slot machine, 4-reel slot machine and the 5-reel slot machine. Often odds increase with more reels in a slot machine. The other attraction includes the fruit machine, and uses a video monitor in place of standard reels. Similar to these, various new slots are introduced in casino’s every season. Every time they come up better gimmicky names and enhanced digital effects, thus maintaining and increasing the attraction.

These slot machines are designed with a feel and look of the conventional mechanical models, but they work on a complete different principle. Dissimilar to the conventional mechanism the outcome of each pull in modern slots is controlled by a central computer inside the machine, and not by the motion of the reels.

Casino Jackpots

Legend has it that the term “jackpot” originated at a time when riverboats with casinos traversed the Mississippi river. Stories suggest that an unbeaten and skilled poker player named Jack Rodgers saved all his winnings in a big iron pot. This was secured at his favorite casino. Rodgers decalred that if anyone could beat him they would win all his wealth. As this decalartion spread, people started referring to the large prize as ‘Jack’s Pot.’

It is possible that this legendary wealth came to be known as jackpot through the years. The terminology is still used to refer to winning a large prize. Today “Jackpot” is a popular slot machine game. The game is always played via the Internet.

The game is fairly simple. The slot machine downloads three randomly selected numbers or characters. A player has to insert a specified token to start the game. The numbers spin in an automated pattern. The objective of playing casino jackpot is to get identical numbers in all three slots after a spin.

Casino jackpot is a common slot machine game in all casinos. A major reason for this is because the game is almost always designed to attract a player. The stakes in casino jackpot are very small. People have to purchase tokens of very minimal value. Since the monetary denomination is less, people in turn tend to spend a lot without realizing. The game is designed to allow people to have occasional wins.

There are people who are reputed to have won enormous sums of money at a casino jackpot game. The game is a window to the entire casino experience. Casino jackpot accustoms people to take risks, preparing them for the larger casino games. The game is known to be highly addictive. This is a direct result of the low stakes in trhe game. People are always willing to take another chance at casino jackpot just in case the next spin proves to be lucky.


As early as the 11th century, a camera using a pinhole or lens was developed. This projected a specific image on a viewing surface. At that time, these images were preserved by manually tracing them, due to non-availability of adequate photographic technology and material. The first small and portable camera was invented in 1685. However it was not until 1826 that the first permanent photograph was made.

The word camera is derived from the Latin word ‘obscura latin,’ which means dark chamber. A photograph is a medium through which people can relive past events and revisit moments. From the days of stencils, black and white to color, cameras have come a long way.

A camera is essentially a lightproof box fitted with a lens. A shutter is used to collect incoming light and direct it onto the film within. There is a viewfinder, used to frame the scene and a mechanism that helps with focusing on the object. An external or internal flash maybe used to maximize lighting conditions.

The shutter speed controls the aperture through which light enters the camera. The higher the shutter speed the smaller the aperture, and vice versa. This mechanism controls the time during which light is permitted to enter the camera. Pinhole cameras use a tiny hole to focus on an image. Other cameras use a lens for focusing purposes. The focal length of a lens, which is the distance between the rear of the lens when set on infinity and the film, establishes viewing angle and the size of the viewed objects.

35-mm cameras are currently the most widely used cameras. Modern cameras are available in rangefinder and reflex models and use an integrated rapid film-transport mechanism. Lenses can also be interchanged with ease, using the same camera body. Photographers may use lens filters, flash bulbs, and tripods to support their photographic ventures.


This new year, celebrate with your family and catch all the emotions with the latest digital camera available on the market. Some brands have come up with top-of-the-heap models, and some are doing well with slight modifications. Camcorder brands are looking ahead for high competition as consumers are gradually upgrading to digital performers.

Sony continues to dominate the market with DCR-DVD403, with its never–before seen video reception and excellent low-light performance. Along with this model, the market giant has launched high definition (HD) with the HDR-HC1, the only available HD cam under $2,000. In the pipeline, there other players, too, like Canon, JVC, and Panasonic. Canon has launched a new camcorder in its Optura range that has proved to be one of the best this year. The brand has also introduced DVD formats like DC10 and DC20 to the market.

JVC has also introduced its trend-breaker Everio series that runs without a tape or DVD. This newer model runs on a 40GB Microdrive and amazes users with its still-image quality. At this time, the Everio G-series is, of course, a high-class performer, and its continuing price fall will make it easily affordable.

Panasonic placed among the most affordable and its manually controlled range is also doing well. The Panasonic SDR-S100 is a super-slim camcorder that has the best Panasonic features one might dream of.

Buyers however, are leaning toward tapeless camcorders. Removable flash memory and an internal hard drive that make the model slimmer and more portable are now the greatest hits. If you are looking for impressive image quality and all the digital features, then the above brands are suitable. But while buying the favorite model, still-image quality and other digital facilities should also be considered.

Camcorder Batteries

Digital camcorders of today have come along with highly efficient batteries that last longer and give you the utmost satisfaction. Camcorder makers in the recent years have striven ahead in making the battery life longer and longer. Thus, the hassle of charging your battery every time you need to shoot is minimized.

Reputable camcorder manufacturers like Sony, JVC, Panasonic, and Canon are now competing to give you a better battery performer. Meanwhile, the sizes of these camcorders—whether a DVD format or not–are getting smaller and smaller each day. With miniaturization arises the problem: a small camcorder means a smaller battery that would need to remain charged for a longer time span.

Most of these models, however, run on lithium batteries that not only last longer but also give better results. Professional camcorders, from the Sony or Canon genre for example, do give up to a three-year warranty on their batteries. But the market has something else to offer as well: unbranded but great performers. Lithium batteries made by less-reputed brands also work well. Thus, professional shooters as well as amateurs are increasingly depending upon these versions after the original battery dies out, as the less well-known brands are cheaper and continue to give the same output.

But while purchasing these unbranded batteries from a retail outlet in your city or from an online store, take caution. You need to understand few criteria. You should compare prices and warranties, if available, on the battery. The credibility of the online store or the manufacturer and the longevity of the power provider can be of much help to you. It has occurred many a time that people have simply paid for a particular battery on the web and are still finding it difficult to have it delivered.

Buy Home Theater Systems

You can build a nice home theater system if you have a clear idea of what to purchase and what to look for. Essentially, a home theater system has a television set, DVD player, and stereo surround system. All three play important roles to make the system flawless, but the television is perhaps the most important component you have to purchase.

While buying the television, you should look for these features: resolution, surround sound capability, and video component. The more resolution, the better the picture quality.

In order to amplify sound and audio depth, surround sound uses multiple channels and speakers. Of the various surround sounds, Dolby Surround, Matrix Surround, Dolby ProLogic, and Dolby Digital 5.1 are acceptable.

The quality of picture depends on the resolution. That’s why a large-screen TV may not have the picture quality of a small-screen TV with higher resolution. A screen between 35 and 50 inches will be good enough if you want to enjoy your favorite movie in your living room. High-definition televisions, or HDTVs, receive digital signals and are therefore essential for picture and sound clarity. Most televisions come with video components like Composite Video and S-Video inputs, and that should suffice for you.

The DVD player you are going to buy should have a six-channel decoder, video outputs, and additional disc formats. You will require a six-channel decoder as well as five surround speakers (center, two front, and two back) for surround sound.

Your sound system will comprise two components: the receiver/amplifier and the speaker system. Your new receiver should have the following features: Dolby Digital ready, subwoofer power, Digital-ready 5.1 inputs, subwoofer output, and audio inputs.

Good speakers are crucial for getting the best audio experience from your sound system.

If different speakers are of different brands, the overall sound quality will suffer. So go for five identical speakers, as they will work better for your home theater.

Buy Hidden Cameras

The demand for Hidden Cameras has increased in current times, prompted by an increase in the rate of crime. They are known by various names such as Hidden Cameras, spy cams, nanny cams, etc., but all of them serve the same purpose –to provide covert surveillance of a particular area. Hidden Cameras are bought to keep vigil over a place that is beyond the line of vision.

The type of Hidden Camera to be bought would depend on the size and the lighting of the room that is to be surveyed. Most Hidden Cameras have lighting adjustments that allow them to record images in both bright as well as dark light conditions. The most important part of a Hidden Camera is its lens. The lens should be able to focus images from even distant parts of the room.

Another important aspect to be considered while buying Hidden Cameras is to consider its concealing ability. The camera should be small enough to be hidden in a part of the room. The camera should itself not be seen, but must have a clear range of vision. Plain miniature cameras may do the trick if it is possible to attach them to camouflaging surfaces such as table-lamps, ceiling fans, frames of paintings, etc. Also, there are several utility items available that are, in fact, Hidden Cameras. Tiny cameras can be hidden into clocks, radios, pens, watches, spectacle frames, teddy bears and even buttons. If there is no place to hide the camera effectively, such an object may be bought.

For a room, a fixed Hidden Camera with cables is sufficient. But for a moving purpose, there are wireless Hidden Cameras. These cameras can display images on a remote monitor without the hassle of wires. There are also cameras that can be connected to the USB ports of computers, and images can be uploaded onto the internet over large distances.

There are hundreds of possibilities when it comes to buying Hidden Cameras. It is necessary to keep the requirement in mind and buy a camera catering to your needs. Price is not important when it is the question of keeping a protective watch over your children, adults or employees.

Buy DVDs

With the advance of technology at a rapid rate, people have options for new and easy ways to carry information along with them. DVDs are the perfect items available as they can store large chunks of data of different format.

DVD stands for Digital Versatile Disc. DVDs have a greater storage capacity than ordinary CDs and maintain a higher quality of performance. Apart from video and audio files, DVDs can hold various interactive tutorials, games, computer files, and much more. Buying DVDs has therefore become a better alternative than CDs.

In this fast-growing world, DVD sales have increased tremendously. To buy DVDs through the Internet is much easier than going to the shops. Before buying it online, a secured credit card transaction has to be ensured. It is always better to buy a branded DVD rather than a cheap one.

People buy DVDs for their personal use as well as to give as presents to their loved ones. You can buy DVDs of the latest music albums and movies. The audio and video files stored in DVDs possess more clarity and its additional features are highlighted to a greater extent. The abundant availability of recordable and rewritable DVDs has made a boom in the DVD industry. Rewritable DVDs can be used as many times as you wish.

Nowadays, a countless number of pirated DVDs are sold illegally. It is causing a great damage to the film industry as it is common to get DVDs of the latest movies before their actual release in theatres.