Europe Dithers Over Digital Radio

Is the continent's digital AM and shortwave system stillborn or still to be born?

3 min read

It’s been a year since Digital Radio Mondiale was supposed to spark a revolution. Shiny new radios would come fitted with DRM technology to receive a new, higher-­quality digital signal for shortwave and AM broadcasting. That in turn would pave the way for all-digital airwaves--first in Europe, and then in Asia, Latin America, and North America.

It never happened. The first DRM receivers were supposed to be on the market in time for last December’s holiday shopping [see photo, ”Stocking Stuffer]. But because of unspecified technical glitches--or maybe just cold feet on the part of manufacturers, who worried about whether the technology would truly take off--stores still lack radios. Now, with this year’s holiday season fast approaching, DRM backers are trying to drum up enthusiasm for the technology.

Keep Reading ↓Show less

This article is for IEEE members only. Join IEEE to access our full archive.

Join the world’s largest professional organization devoted to engineering and applied sciences and get access to all of Spectrum’s articles, podcasts, and special reports. Learn more →

If you're already an IEEE member, please sign in to continue reading.

Membership includes:

  • Get unlimited access to IEEE Spectrum content
  • Follow your favorite topics to create a personalized feed of IEEE Spectrum content
  • Save Spectrum articles to read later
  • Network with other technology professionals
  • Establish a professional profile
  • Create a group to share and collaborate on projects
  • Discover IEEE events and activities
  • Join and participate in discussions

Digging Into the New QD-OLED TVs

Formerly rival technologies have come together in Samsung displays

5 min read
Television screen displaying closeup of crystals

Sony's A95K televisions incorporate Samsung's new QD-OLED display technology.

Televisions and computer monitors with QD-OLED displays are now on store shelves. The image quality is—as expected—impressive, with amazing black levels, wide viewing angles, a broad color gamut, and high brightness. The products include:

All these products use display panels manufactured by Samsung but have their own unique display assembly, operating system, and electronics.

I took apart a 55-inch Samsung S95B to learn just how these new displays are put together (destroying it in the process). I found an extremely thin OLED backplane that generates blue light with an equally thin QD color-converting structure that completes the optical stack. I used a UV light source, a microscope, and a spectrometer to learn a lot about how these displays work.

Keep Reading ↓Show less