Wednesday, May 25, 2005

A Revolution in Home Entertainment Systems - Touchscreens & Media Servers

A Revolution in Home Entertainment Systems - Touchscreens & Media Servers By Steve Faber

Home entertainment systems have come a long way since you ooh’ ed and ahh’ed because your neighbor had a few pairs of speakers that actually fit flush into his walls. That’s old news now. Even homes in comparatively modest new developments are being outfitted with a full complement of audio, network, TV and telephone wiring. In many developments the builder offers a standard wiring package and various upgrades for additional wiring, speakers, wiring enclosures and even full control systems.

Systems have evolved to include sleek, wall-mounted touch screens that allow simple access to your music and other house functions such as security, lighting, HVAC, and motorized window treatments. A talented programmer can make these systems function with true “one touch” simplicity. It’s almost as if they’re reading your mind.

The touch screen’s advantage is that it can change the control interface to only show what you need at any one time. This affords tremendous flexibility while retaining the simplicity people desire. The touch screen interface is extremely powerful when combined with another technology that has come into prominence recently; the hard disc based media server. Your CDs are downloaded, or ripped, onto a hard drive. This combination allows your entire music catalog to be displayed on the touch screen for easy searching. You can typically search by artist, song title, genre, or album. Once the desired selection is located, you just touch it on the screen and it begins to play.

These hard drive servers use computer hard drives and modern compression techniques to store phenomenal amounts of music in a simple audio component less than half the size of a 200 disc CD changer. They function just like a typical CD player, not your computer, so they are reliable and easy to use.

Media servers have exploded in popularity recently because of the enormous popularity of compressed music formats such as MP3 and the fantastic array of functionality a disc based system allows. For those who have, or do, own CD mega changers, a hard drive music server will be like a breath of fresh air.

Access to any song is typically less than a second away. Contrast that to selecting disc 94 in your 300-disc CD changer when you are playing disc 201. With a multi-room audio system, you may be on the other side of your house trying to do this with a keypad or remote control. The wait for your changer to return the disc it was playing then trundle the carousel around to your desired disc can seem like an eternity.

Another advantage is easy cataloging. Most hard drive systems will recognize any CD you insert for ripping and if they don’t, they are connected to the internet for access to a giant database. This they access automatically to gather artist, album and track information. Gone are the days of using a keyboard or remote to tediously enter the information about your CDs into a CD changer. You can also stop worrying about which slot your discs are in. “Let’s see, was Led Zeppelin IV in slot 90 or 190?” Using a hard drive server frees up your CDs for use elsewhere such as your car, boat or vacation home.

In addition, since your CDs are not locked up in a changer, your collection is able to be enjoyed by many members of the family at once. With a changer, if someone is listening to it, all of the discs inside it are basically off limits. With a changer, not only are your CDs free for use in other locations but many hard drive servers provide multiple audio outputs.

Multiple outputs enable you to listen to different discs in different areas of the house if your system is so configured. For example, one person could be listening to Korn in the rec room while Bach’s Requiem is being played in the kitchen and Dire Straights in the bedroom. With a conventional CD changer, this is impossible.

You can also buy and store music from many online music services and store those on your hard drive server. Hard drive servers offer advantages over music files stored on a computer as well. Because they function like a traditional audio component, they are easier to use for many people. It is also easier to integrate them with touch screen based home control systems. This will begin to change as the popularity of multimedia PCs such as those running Microsoft XP Media Center Edition 2005 increases.

These units are many steps closer to delivering the long promised “convergence” between consumer electronics and computers. Multimedia PCs, also known as HTPCs [Home Theater PC] function as DVD players, personal video recorders (similar to a TiVO), and hard drive media storage.

They allow storage of digital photos for easy display on your TV or monitor. HTPCs can, of course, browse the net on your TV via your broadband connection. As hard drive storage becomes more economical and compression techniques become better, the storage of HD movies and HDTV programming will become commonplace.

Soon these types of servers and interfaces will become the norm rather than the exception. You'll think nothing of the amazing array of features offered and the ability to easily access your media collection throughout your home. Once a rarity, media servers, in one form or another, will be found in almost every home.

Steve Faber has almost 15 years in the custom installation industry. He is a CEDIA certified designer and Installer 2 with certifications from both the ISF and THX. His experience spans many facets of the industry, from the trenches as an installer and control systems programmer, and system designer, to a business unit director for a specialty importer of high end audio video equipment, a sales rep for a large, regional consumer electronics distributor, and principal of a $1.5M+ custom installation firm. Steve is currently is senior sales engineer for Digital Cinema Design, a CEDIA member firm in Redmond, WA. He is on the web at http://www.1touchmovie.com
Article Source: http://EzineArticles.com/



Wednesday, May 18, 2005

Flat Panel Displays - Beyond Plasma

Flat Panel Displays - Beyond Plasma By Steve Faber
The term set-top box will become something of a misnomer in the near future, as most displays will become too thin to allow a box to placed on top of them. As the price of plasma & LCD displays has plummeted and their image quality has improved, they are popping up in homes everywhere.

Although they are the darlings of the media and the generic for flat panel display in the minds of many, plasmas are about to be in a serious fight with other technologies for the flat panel crown.
LCD displays, seen on the desktop for years as computer monitors, and commonplace in smaller flat panel TVs, are finally increasing in size to the point they are becoming a rival to plasmas in the 42" – 50” size range. Picture quality is similar to plasmas; however LCDs are immune to the burn-in that can affect plasma displays. This burn-in occurs when plasma units are used to display static images such as video game screens and stock or sports tickers.

Plasmas generally have an edge in the ability to produce deeper blacks and more saturated colors than LCDs. Plasmas are also better at producing full motion video than LCDs because of the response time of the LCD panels, although this difference is disappearing.

LCD TVs are a bit more expensive than plasmas at 42" and larger sizes, but they should last a while longer. Plasma displays should last 20,000 – 25,000 hours and LCDs should give 30,000+ hours of useful life. However, the latest generation of plasma displays from NEC is claimed to have a 60,000 hour life. If that is an industry trend, the traditional lifespan advantage held by LCDs may soon disappear.

Currently Sony has a 42", NEC a 40", Sharp a 45", and Samsung a 40" LCD TV or display. Samsung also has the big one, a 46" that started shipping in early September of 2004. The Samsung 46" was the first consumer LCD video display to have a 1080 line native resolution. This allows it to display 1080p native when that format arrives for HDTV.

Other technologies are on the horizon as well. One that has shown great promise is OLED, for Organic Light Emitting Diode. Developed by Kodak and Pioneer, this technology has been used for a few years in car stereo and cell phone displays. It's just about ready for prime time. Philips has shown a 13" unit, Samsung a 17", and Seiko-Epson has shown a 40" prototype.

OLED’s advantages are many. It actually emits it’s own light, so it requires no backlight and has better contrast than a traditional LCD. OLED displays have a wide viewing angle like a plasma display. Power usage is very low, less than 1/2 that of a traditional LCD display. At around 2mm deep, OLEDs are much thinner than either a plasma or LCD.

They have a refresh rate about 1,000 times faster than a traditional LCD, so they will be far superior for video applications. They have fewer parts than LCD or plasma and can be manufactured using a novel ink jet printing process. This promises to keep prices low as the technology is implemented. It is expected to see sub 20" displays in stores by 2006 with larger units following one to two years later.

Other promising display technologies on the horizon include SED (Surface-conduction Electron-emitter Display) and carbon Nanotube. SED was developed by Canon, who began research into the technology in 1986. SED is basically the same principle as CRT, however there are important differences. The most important from a consumer standpoint is thickness. An SED display is only an inch or two thick, depending upon screen size.

The basic construction is two glass plates separated by a vacuum. One of the plates is coated with phosphors the other is mounted with electron emitters. Electrons are ejected when a voltage of about 16 to 18 V is applied to the emitters. These electrons are then accelerated by a higher voltage into a beam similar to that in a CRT display.

The visual advantages of SEDs are as for CRT displays, great color, deep black levels and quick motion response. These advantages, combined with the slim form factor, low cost and small power requirement should make for a real winner.

A unit shown by Toshiba at a Japanese trade show in April of 2005 even had it’s contrast ratio up to an incredible 100,000 to 1 by significantly reducing black luminance. Even if the specs were a bit inflated this would still amount to a fantastic contrast ratio, on the order of 5 times that of a traditional CRT. Toshiba has indicated they will move to this technology for all displays over 40” by 2006.

One fly in the SED ointment however. On April 21st, 2005 US firm Nano-Proprietary has filed a suit against Canon in the U.S. District Court of the Western District of Texas, alleging that the surface (SED) televisions that Canon plans to release violates a licensing agreement signed 5 years ago between the Japanese giant and Nano-Proprietary.

The pace of change in the home theater and entertainment display market has just kept accelerating. There are some promising technologies around the corner that will allow, as usual, higher performance, lower cost and more compact form factors. As prices for advanced technologies plunge and technology improves, it will make it even easier for the average person to have a fantastic media system almost anywhere in their home.

Steve Faber has almost 15 years in the custom installation industry. He is a CEDIA certified designer and Installer 2 with certifications from both the ISF and THX. His experience spans many facets of the industry, from the trenches as an installer and control systems programmer, and system designer, to a business unit director for a specialty importer of high end audio video equipment, a sales rep for a large, regional consumer electronics distributor, and principal of a $1.5M+ custom installation firm. He currently is senior sales engineer for Digital Cinema Design in Redmond, WA. He is on the web at http://www.1touchmovie.com
Article Source: http://EzineArticles.com/



Sunday, May 08, 2005

EDTV: What You Should Know Before You Make That Purchase

EDTV: What You Should Know Before You Make That PurchaseBy Simon Canfield.

Enhanced Definition Television – also known as EDTV – is one of the many modern viewing technologies of our time. Often confused with HDTV capability, this is actually a compromise between standard TV and HDTV. In fact, the visual benefits are at least twice that of standard television, since EDTV technology offers a minimum resolution of 480p when used on a monitor. As a result, you’ll find that this type of system is more expensive than standard television, yet cheaper than HDTV technology.

While there’s been a hew and a cry to purchase the more expensive – and higher quality – HDTV, there are actually some advantages to the “second best” EDTV version. First, there can be as much as a $1200 price difference between the two, and – in some scenarios – the viewing quality of EDTV is superior to that of its pricier counterpart. For instance, there’s only a 10% difference in quality when you’re viewing two plasma TVs that have been produced by the same manufacturer, but the EDTV soars above HDTV when the incoming picture has a lower resolution than the monitor’s regular resolution. This is because EDTV technology allows it to align better with the incoming signal.

If you have an extensive DVD collection, or simply prefer watching movies via DVD, then the EDTV will offer a better video experience. Why? Simply because the DVD, which offers a 480p picture matches perfectly with that of EDTV –which is also 480p. That, in addition to the fact that most content isn’t high definition, but happens to have a pixel count that matches beautifully with the “lower quality” EDTV system, makes this a better buy. Higher contrast ratios are also better in the EDTV arena, which makes the viewing of darker scenes more superior. In fact,even high definition quality transmissions only suffer a 10% difference in quality between EDTV and HDTV – yet, the price of the former is significantly less.

It’s a given that if you purchase a set that’s of lower quality, then even EDTV resolution will suffer. If you’re going to invest in a system that offers higher technology, then you should also be prepared to make the same decision when it comes to investing in the set which will receive the images. So, models that come from Sony, Pioneer or Panasonic will tend to offer a better video experience thanthat which comes from an inferior manufacturer.

The bottom line is that – dollar for dollar – buying an EDTV system is a smarter decision than purchasing the HDTV.When comparing price, difference in viewing quality and the ratio of programs that are actually offered to the general public in a high definition format, the EDTV wins, hands down. So, before you go out and spend about $1200 more than you need to, consider investing your hard-earned money into the EDTV technology. You’ll rarely notice the difference – until you check your bank book, that is; then the difference will become obvious. After all, there’s always the possibility that the chasm between the two systems may increase in the future, but think of all of themoney that you can save, in the meantime.
(c) 2005 Simon Canfield - All Rights Reserved
Simon Canfield is a hi-tech enthusiast and freelance author.
AllAboutHeadPhones.comBigScreenTVsecrets.com
Article Source: http://EzineArticles.com/