Archive for the ‘TV & Home Theater’ Category


HDTV: Power of Perception

 

HDTV TV

By Anne Ahira

Somewhere between the picture and the audio lies a magic that cannot be destroyed when you know the secret. This is magic that the world’s greatest magicians could never replicate and it is show on the screen of television.

Through new innovations, there are newer and more exciting ways to view the world. High Definition Television (HDTV) is the magician and the media of the world is its stage.

The illusions are the images and the viewer’s perception is changed. As it stands, we view the world through our televisions in analog, although it is sent to our televisions in a digital format. The image is converted into analog and is shown in half the quality that it is capable of. However, soon, this will all change.

Most networks are now transmitting in DTV, or digital video. The allowance is there for better quality of video and audio, but only if you have an HDTV to view it at its best.

This is why the perception is changing. While DVDs are digital video, the DVD players must convert them to analog to view them properly. With HDTV, that conversion is not needed.

However, HDTV is not the same as DTV, or digital video, it is simply a bi-product of DTV. Digital video allows for two different types of image compatibility. The low quality is SDTV, which is equal to the highest quality of analog video, and the high quality is HDTV.

The pixel resolution for HDTV is approximately 1920X1080 pixels per square inch and has a frame rate of between 24 frames per second, progressive to 60 frames per second, progressive.

This essentially means that the image can be clearer without actual degradation of the signal and move at a higher speed without skipping, jumping, or synchronization issues with the audio. This gives you a clearer image and more reliable audio.

However, not everything is formatted for HDTV. Most DVD movies are not formatted for High Definition and, while they still play on an HDTV, the quality of the image is not as clear and crisp as the manufacturers advertise.

The reason for this is the difference between digital video and HDTV. On a lower quality SDTV, you will have a beautiful image that is clear and perfect, because, while the frame rate is the same, as is the aspect ratio, the pixel size is not the same.

The pixel size on a SDTV is the same as the pixel size on an analog television, which is approximately 704X480 pixels per square inch. This difference in pixels means that the SDTV can still show images that are from analog devices without the drop in image quality.

Some HDTV manufacturers have taken this into consideration and added an SDTV connector that converts the images to provide better quality visual perception and maintain the HDTV quality audio, as well. You can find an HDTV of any format, as well as SDTV formats, in any retail electronics store, as well as at online markets, like Amazon.



What Are The Advantages to Having a Wireless Cable Modem

 

Wireless Cable

By Anne Ahira

If you have a household with multiple computers, or even have a laptop, it is easy to understand the frustration of being tied down with cables.

The hassle of untangling wires when you are needing to get to a single cord, or tripping over wires while moving around, especially with small children, can become hazardous to your entire family.

These are only a couple of the problems you will no longer have to face once you go with a wireless cable modem.

Some of the concerns when switching to wireless is the signal. In truth, a wireless connection is just as strong as one that is directly connected to your cable modem. Not to mention that a wireless cable modem is very simple to set up.

There are very little configurations that are required. Some wireless cable modems have a radius of 328 feet indoors and 1,312 feet outdoors. That basically means that in a space with walls it has a range of 328 feet, however, in an open area it has a range of 1,312 feet.

Furthermore, you can have several connections on the same network without bogging it down. So, there is no need for you to worry about a wireless connection.

Another concern is that a wireless connection is not safe from computer hackers who would use the connection to steal your personal information that may be stored on the computer.

A wireless cable modem has an internal security setting that can be set, as well as a firewall to protect your information. So, as long as those protocols are configured in your wireless security options, it will be completely safe to surf the net without the worries of having an intruder.

This is due to the WEP (wired equivalent privacy) key. The WEP key is set up in the wireless security options of the wireless cable modem and prevents hackers, as well as viruses, from attacking your network.

Wireless cable modems are great for networking home, or office computers and terrific if you want to be able to access the internet in any room of the house without the restraint of wires, nor additional equipment that would normally come with setting up a wired network.

No matter where you are in your home, or office, with a wireless cable modem you will be able to access the internet with ease. You can have your wireless cable modem in the kitchen and surf the net in your bedroom, or in your living room.

There are no limits to the possibilities. Now that you have the information, you can make the choice on what would be best for you.