Which Kind of Television Is Best for Your Home Theater?

Much debate has been made in the name of which television offers the best user experience. When you sit down in front of the big game, which television format is going to give you the best picture, the best price, and the best overall experience? While it may not be possible to say whether LCD, Plasma, or LCD is going to be the best choice for you, it is possible to put together a list of some of the pros and cons of each format to help you make a decision as to which format will offer you the most of what you want with the least of what you don’t want.

LCD
LCD televisions have been quite popular for some time now and have become something of an “industry standard” if there is such a thing for the television market at this point in time. The fact of the matter is that when you go to your local “big box” store and walk into the electronics section, most of what you see in front of you are LCD televisions. So why are LCDs so popular? One great advantage of LCD televisions is the fact that they offer very low glare and can be watched in a higher light environment than a plasma television. Another advantage of LCD will come at the end of the month in the form of a lower energy bill. LCD televisions as a rule tend to use less energy than some of the alternative televisions. While LCD televisions have a lot to offer, many people feel that plasma televisions offer a better picture at a lower cost.

Plasma
Plasma televisions were more popular several years ago than they are now but many people swear by them, and for good reason. Plasma televisions cannot be viewed as easily in high light situations as LCD televisions due to glare, but plasma screens are known to offer what many people consider to be a more vivid picture and deeper colors, especially blacks, than some of the alternative options. Another great feature of plasma televisions is their price. As LCDs and LEDs are gaining market share it is becoming possible to find some really great deals on plasma televisions. If you are planning on having a television for primarily home theater, lower light situations, then a plasma television may be exactly what you are looking for.

LED
LED televisions are essentially the next generation of LCD televisions, this is because the LED moniker refers to how new LCD televisions are backlit rather than an entirely new system onto itself. So when thinking of an LED television you can expect some of the same benefits as with an LCD like low power consumption, a thin physical build, and a great low light viewing experience with the added benefit of improved color saturation.

Whatever television you decide is the right choice for you, I’m sure you will be amazed with the high quality that many companies are offering across the spectrum of television formats these days. Basically, it’s hard to go wrong with a great new television!

The Digital Television Revolution

The 2012 London Olympics really brought home to me just what a massive technological jump in digital media has occurred during the last few years. There has been significant advances in digital compression and transmission.

This year, in addition to high definition broadcast, which made its appearance in the 2008 Beijing games, 3D television was also added to the line up, offering more channels and choices. With analogue television broadcast almost becoming extinct, digital televisions promise of delivering more for less has become a reality. Now, how did we arrive at this point and what does the future hold for digital multimedia?

Prior to the digital switchover, analogue television was resource hungry in terms of the amount of bandwidth required to carry a single channel. This is typically between 6 – 8 MHz depending on the type of video standard being used. This limited the number of channels which could be transmitted, since there is a finite amount of spectrum that must be shared with other services such as mobile, radio and two way communications.

What the digital standards of ATSC (North America) and DVB (Rest of the World) provided was the ability to reuse the existing analogue spectrum more efficiently. This meant a typical 8 MHz carrier used for analogue broadcast could be converted to DVB-T (Digital Video – Terrestrial) making it possible to carry 9 standard definition channels or 3 HD channels plus one SD channel for the same amount of bandwidth.

It would have required in excess of 70 MHz of frequency spectrum to achieve this with the old analogue standard. In addition to squeezing more channels into less space, digital television is much clearer and doesn’t suffer from ghosting or other artifacts which troubled analogue systems. Being digital also allows other features like improved digital sound, electronic program guide and subtitle support to be included.

Televisions are sold with the digital decoder integrated and older televisions can use a separate set top box. As technology advances, we will also see improvements in the compression techniques used, which means even more content for digital media, already this has enabled 3D broadcasts for some events such as the Olympics.

The Future

Eventually as fibre to the home is deployed worldwide, the all IP enabled set top box will replace the DVB standard, since the IP set top box has a distinct advantage over digital broadcast technologies, specifically multicast join requests. Unlike DVB-T or DVB-S, IP multicast allows the receiver to send a join message to the network for the desired channel then if the request is successful the broadcast is routed to the receiver, only the bandwidth for the requested channel is used. With the DVB standard, all available channels are being broadcast simultaneously, and the channel count is limited by the finite amount of channel bandwidth regardless of the compression techniques being used.

The IP set top box can support both selective multicast (one to many) and on demand unicast (one to one) broadcast, this allows for virtually unlimited amount of content. However, unlike DVB, IP set top boxes have to worry about latency and QOS, since there is traffic contention with both residential broadband and IP Telephony. A poorly implemented IPTV deployment can behave like analogue television in an over subscribed service provider network, unless the correct traffic management is in place.

High Definition

Today HD is regarded as premium content by most operators and is charged at a higher rate than SD (Standard Definition). However, over time this will change as people upgrade their televisions to HD models. Today there are two standards for digital HD broadcast, 720p and 1080i. The ‘p’ means progressive and the ‘i’ means interlaced. In 720p broadcast, the picture is made of 720 horizontal scan lines and a vertical resolution of 1280 pixels, which has the advantage that one frame represents a complete image.

In 1080i broadcast, the picture is made from two 540 horizontal scan images which when combined make 1080 lines. The vertical resolution becomes 1920 pixels. Most modern televisions support playback of 1080p, which is definitely more desirable than 1080i especially in fast moving sequences where motion blur can be experienced. However, on modern televisions the difference is barely discernible.

Initially the public uptake of HD was slow, the receivers were expensive and the available content was limited. HD television has really been an evolution rather than a revolutionary change for most of us and this is also true of digital television in general. As digital switchover continues worldwide and consumers replace their televisions, digital will become the new standard. However, it is unfortunate that technology won’t help to improve the content.

What Must Know in Mild Autism Spectrum Disorder

Mild autism spectrum disorder is a type of mental disorder that begins to show during the early childhood and continues throughout the life of the patient. Symptoms of mild autism are normally compared with Asperger’s Syndrome; a mental disorder that usually appears between the age of 5 and 9. On the other hand, mild autism spectrum disorder usually appears at the age of 3; the age that usually parents can notice the difference in their child from other children. Children experiencing this disorder usually show average or higher IQ levels.

A child with this disorder finds it difficult to start conversation or have friendship with other children. Or even if the child was able to begin the conversation, the chat will not last long. The special child may be playing with toys and completely unaware of what is happening in its surroundings, or probably stare at the toy for a long period of time. In addition, children with this kind of condition has difficulty in making or maintaining eye contacts and talking repetitive phrases or sentences that are read from books, watched on television, or heard from a previous conversation.

Also, the child shows mood swings at a very young age and displays poor motor ability. The dangerous part is the occasional head banging of the child with mild autism spectrum disorder. Keeping the environment safe is the best precaution to head banging such as putting padding on corners that can harm the child. It is frequently reported that children with symptoms of mild autism spectrum disorder are regularly picked by friends and punished in school. These people are ignorance of the child’s condition. Parents should let this people know how critical the child’s situation that if neglected can lead to severe case of autism.

There is no known cure for mild autism. However, treatment is focused on behavioral improvement, communication enhancement, and social interaction frequency. Early detection and immediate intervention have shown promising result for a child to have a better life as it reach an adult life. With prompt and right intervention, the child’s best potential can be achieved and become a productive member of the society.