Thomas J. Norton

The recent decision by Samsung to cease selling Blu-ray and Ultra HD Blu-ray players (at least in the U.S.), reported elsewhere on this site, has been taken by many as foreshadowing the death of video on physical media. Add in Oppo’s cessation of player manufacturing last year, and the statistically significant falloff in disc sales (confirmed locally by a recent, dramatic reduction in the shelf space devoted to video discs at my nearest Best Buy), and, the news certainly isn’t encouraging.

But the imminent death of the disc isn’t yet in sight. The disc market is still profitable, and the studios haven’t yet slowed down churning out both new and older titles. Check out The Digital Bits website for their weekly lists of releases and then tell me that video discs are on life support. They may be limping, but as a wise man once said, “It ain’t over ‘till it’s over.”

Lasers, or Light Amplification by Stimulated Emission of Radiation, have been with us for half a century. A laser produces a highly focused (spatially coherent) beam of light having a very specific wavelength, the latter depending on the design and application. They’re used in medicine, industry, laser printing, barcode scanners, CD, DVD, and Blu-ray players, laser light shows, and innumerable other applications.

Lasers can also be used as a light source for digital projection. While this is still under development, we’re likely to see it first in movie theaters. Lasers can not only produce a much brighter image—which can help overcome the dimness of 3D presentations—but also offer cost benefits to theater owners. Conventional xenon lamps are expensive to replace, and have a useful life of perhaps 1000 hours (some theaters try to stretch this as much as possible, often with negative effects on picture quality). A laser light source can stretch this by at least twenty-fold or even more. While replacement lasers will likely be significantly more expensive to early on, they’ll still be cheaper per hour of use. Another possible cost saving might come from using a centralized “light farm,” with the light from a single remotely located bank of lasers routed to multiple projectors via fiber optics.

The gear has been packed back up and the rooms cleared. The demo material has been tossed into suitcases, destined to end up in an obscure corner of each exhibitor's factory, the place where overplayed and now unloved recordings go to die. And copious notes have been made on what worked and what needs to be improved.

After a long, hot summer (in more ways than one!), the audio and A/V show season recently kicked off with the annual CEDIA Expo. CEDIA stands for the Custom Electronics Design and Installation Association, and as the name implies, it caters to attendees in the business of installing custom home theaters and media rooms. As such it also offers a wide range of training sessions to supplement its trade show exhibits.

In recent years CEDIA has moved beyond traditional A/V gear and into peripheral products such as home automation, security, and home health assistance — areas a custom install company might find useful in expanding its services. But traditional audio and video are still CEDIA's core attractions, and in showcasing both current and new products it draws a huge contingent from the A/V press.