Posts Tagged ‘LED light’

Coldplay in Vancouver: When you give 119 per cent, you don’t need nuance

Úterý, Duben 24th, 2012

Few acts these days could sell out two shows at Vancouver’s Rogers Arena, but Coldplay, easily one of the hottest in the world, boasts cross-generational appeal.

The U.K. band has sold in the order of 55 million records and is sitting with another new hit album in Mylo Xyloto. Frontman Chris Martin promised Friday night’s crowd that they’d give “119 per cent,” and the band delivered on that rather random promise with a visually compelling and dynamic 90-minute performance.

The production was all about clever tricks and crowd-pleasing spectacles. One of the most impressive of these was the multicoloured LED light wristbands handed out to fans upon arrival. The radio-controlled lights lit up in dramatic unison once the band launched into the new album’s title track, and they were used throughout, turning the room into a giant Lite-Brite and the audience into part of the production.

Coldplay works hard, plays solidly, writes lovely, magnanimous songs with big, joyous melodies, and understands its audience, which means they are not above playing older hits, this time including In My Place, Yellow, The Scientist, Viva La Vida, Fix You, alongside invigorating, chest-walloping renditions of new tracks like Paradise and Every Teardrop Is a Waterfall, the fittingly dramatic show closer. And while Martin might not be the most natural performer, he makes the most of what he’s got.

Only a truly skilled showman can successfully play to a big room, and navel-gazing behaviour just doesn’t do. While Mick Jagger plays to the very back of the hall with the campy moves of a drag queen doing Tina Turner, Martin, who is superbly fit, opts for the utilitarian moves of a calisthenics instructor. If he’d dropped and given us 100 push-ups, it would not have been out of place.

The band – including guitarist Jonny Buckland, drummer Will Champion and bass player Guy Berryman – generously moved between the main stage and a B-stage connected by a catwalk. Martin covered all of it thoroughly, frequently praising the crowd, and stopping to catch a red bra thrown to him from a clearly diehard fan. In an effort to reach everybody, the foursome even squeezed into a row at the rear of the room during the encore for a rendition of Us Against the World.

Like its predecessor, U2, the band is not one to be accused of subtlety, which is a good thing in an arena, where the sound will never be fantastic, and the group will always be a speck to at least half the audience. And so, being literal wins out against nuance. On Clocks, Martin sang “Tides that I tried to swim against,” and made a swimming motion across the top of his piano. When a song was particularly inspirational, he’d fall to his knees, and then to the floor, in an act that at times came dangerously close to self-parody.

As the show went on, giant balls bounced among the crowd, the band’s clothes glowed with drabs of fluorescent paint and a piano rose from the B-stage on cue. We were covered with giant confetti, and dazzled by Spirographs, red lasers and overhead clouds of swirling colour. On the Rihanna duet, Princess of China, a projection of the Barbadian songstress appeared onscreen, while Martin, his T-shirt drenched, rocked the hell out of his piano seat and, voice breaking, sang his part.

Seriously fun

Pondělí, Únor 13th, 2012

YEARS ago, notebooks were the tool to access the Internet, emails and social networks. While smartphones are increasingly taking over the tasks now, notebooks are still in demand as many still prefer not to to squint over a mini screen to browse, play games or view videos. In this digital era where most office works are done on the computer, taking work home simply makes a notebook a must.

This sturdy looking notebook by the name of Samsung Series 7 Chronos comes in a matte silver exterior with a simple design that is not too flashy. The material used for the body makes it fingerprint resistant and does not collect dust easily. The back panel is kept flat, with no protruding panel to hint where the battery is.

Flipping the screen is easy with minimal resistance and can be tilted open up to 60 degrees. The engraved power button needs only a slight short pressure to turn it on. The Chronos starts up in only 18 seconds with the standard features — the fastest I have ever encountered — and the shut off motion takes around 20 seconds to go completely black.

I love the back-lit island keyboard on the Chronos and this is definitely helpful when working with the device during the night or in dimly lit rooms. The lighting of the F12 key for activating the notebook in Sleep Mode got this notebook a plus point from me. While working with the notebook, typing on the well-spaced keyboards is comfortable and the keys have a nice springy feel.

The Chronos comes with a 14-inch screen to go with the AMD Radeon HD6490 Hybrid Graphics, making colours come alive. The LED display screen fares nicely under the sun with its anti-reflective system that prevents glare. This makes the screen stays clear and visuals are comfortable to view at any lighting condition.

As an entertainment tool, the Chronos with its dynamic screen is a heaven for avid gamers and movie lovers alike. The Movie Color that turns on every time a video or movie is playing accentuates colours. The mode turns off automatically after viewing to manage energy use. With a screen that covers almost to the edge, multimedia activities on the Chronos becomes pleasant and satisfying.

With the Intel Core i7 inside the Chronos, tasks are done fast and effortlessly. Opening a few tabs at once while playing a YouTube video or as you chat is no burden for this notebook, nor is working on various programs at the same time. This makes juggling the music player, Word document and browsing a breeze.

While clicking on icons produce fast response, I find the touchpad a bit slow to react and this makes it a bit hard to move the cursor around. Perhaps this is the only weakness in terms of hardware.

Standard programs that come with this notebook can assist you to work through your school assignments or office tasks. Programs such as Microsoft Office 2010, Sticky Notes and a whole range of Windows Live features make the Chronos a mini office of sort. To share your work, you can use the Windows Fax and Scan or plug in to any bigger screen using the HDMI port at the side for a direct presentation.

This notebook will definitely be useful to anyone who wants to take their work home. You will also find the preloaded Samsung programs useful, especially for multimedia purposes.

Plessey to make white power LEDs in Plymouth

Čtvrtek, Únor 9th, 2012

Plessey has acquired University of Cambridge spin-out CamGaN, and will be using its technology to make white power LEDs in Plymouth.

Its critical intellectual property is a way of growing LED-quality GaN on silicon substrates.

“This technology is the product of substantial R&D investment over the past decade and the plans for its commercial development within Plessey have tremendous potential,” said co-inventor Professor Sir Colin Humphreys, director of Cambridge’s centre for GaN.

It if can be done commercially, growing LED-grade GaN on silicon offers significant cost savings over the more costly sapphire and SiC substrates currently used.

“Our solutions harness novel, patent-protected technologies that increase the epiwafer throughput of standard MOCVD reactors by more than 40%,” claimed CamGaN. “By increasing throughput without compromising quality, this technology offers the ability to decrease costs of LED dies by up to 80%.”

Belgian company EpiGaN and Welsh wafer maker IQE also have GaN-on-Si technology.

“We believe this acquisition positions us among the first commercial players to successfully manufacture high-brightness LEDs on 6in. silicon substrates,” said Plessey.

White outputs of 150 lm/W are planned for late Q4 2012.

This is a high efficacy. Is Plessey sure?

“The 150 lm/W figure is based on the normal benchmark of 350mA input current - 1W input. Hence we have to achieve >600mW light output, which is over 60% efficiency from the combined blue light output and phosphor conversion to white light,” Plessey marketing manager Derek Rye told Electronics Weekly. “This is recognised as a challenging target, but one we believe is achievable by around the end of 2012.”

First samples have peak emission at 460nm, said Plessey, and the technology extends to other wavelengths such as cyan and green.

The firm also announced plans to release a range of chips for lighting: “These smart lighting products will enable intelligent energy management, remote control, controlled dimming and automated response to ambient conditions.”

Light up dog toys and accessories that really shine

Středa, Leden 18th, 2012

It’s this time of year, when it gets dark so early, that those of us with dogs start thinking about blinky lights for their collars.

But the world of light-up dog products has gotten a lot more sophisticated than that.

These days, in addition to the collar lights, there are collars themselves that light, leashes, and even toys.

Among the best, Unleashed has decided, are those made by Nite Ize.

Karin and her ever-playful Border Collie Dean tried out one of the brand’s collars, as well as their glowing ball and flying disc. They were a hit. And having seen the two playing in the park with the ball — I have to say it’s one of the best night toys I’ve ever seen. People — not just dogs — wanted that super-cool ball, with it’s disco-like color changes.

The Nite Ize products were definitely designed for durability and hours of play in poor lighting. With our winter dog walking schedule currently in full swing, where most of the walks occur before or after daylight, these products were perfect for keeping Dean safe and busy.

I felt Dean was safer when he wore the “Nite Dawg” orange LED collar on our evening walks. Instead of merely wearing a blinking light, this collar glowed orange, the entire way around his neck — much easier to see. The collar kept him visible while crossing the busy streets of Baltimore and running around the park. Also, the collar is lightweight.  At around $17.50, I’d definitely say this collar is a great buy for anyone who walks or plays with their dog at night.

The “Flashflight dog discuit” ($16) was a lot of fun and the LED light has lasted for over two months of repetitive play each night. The disc is easy to throw and dog-mouth friendly for catching and sometimes biting (especially for a Border Collie with an abnormally long tongue that tends to get bitten during Frisbee games!).  The battery housing is also covered by durable rubber so I didn’t have to worry about Dean biting through it and getting a mouthful of battery.

The Meteorlight K-9 led dog ball was by far my favorite (as it was Dean’s).  After losing countless balls inthe dark, this one was almost impossible to lose!  We tried the disco version that appears to glow in all the colors of the rainbow.  The ball is also mouth friendly not like other hard plastic lighted balls that we’ve tried.  The on/off button is a bit tricky but the LED light has never turned off after long throws and hard bounces.  At $12, I would buy a dozen of the Meteorlights to use during the winter!

We also found, and confirmed it online after an adventure with the ball in a stream, that it’s water resistant.

The Verdict: I’d give the NIte Dawg and Meteorlight ball 5 paws. The Flashflight discuit was also fun but due to the price comparison with other discs and Dean’s love of the ball, he knocked the rating down to 3.5 paws.

With Sony’s New Crystal LED Display, Color - and Costs

Středa, Leden 11th, 2012

Sony demoed a 55-inch prototype model of a next-generation television that it calls a “crystal LED display” at CES on Tuesday.

It’s claimed to be the first 55-inch full HD self-emitting display using LEDs as the light source.

Sony claims the display offers better contrast, more color and faster video image response times than its existing LCD displays.

The company is “trying to address the life cycle problem with OLEDs, which have had a horrid service life in TVs, typically dropping to about half their original capability within 12 months,” Rob Enderle, principal analyst at the Enderle Group, told TechNewsWorld.

Many TV makers are currently banking on organic light-emitting diode (OLED) screens.

Sony’s technology is different from other manufacturers, Sony Electronics Vice President Brian Siegel said, though he declined to provide details regarding other aspects of the technology.

The prototype demoed at CES had a 55-inch screen and a resolution of 1,920 by 1,080, Sony said. Full HD uses about 6 million LEDs, divided equally among red, green and blue.

Sony’s new displays consist of RGB LED light sources equal in number to their resolution in pixels, meaning that a screen with a resolution of 6 million pixels will have 6 million LEDs.

To achieve this, three ultrafine LEDs — one each in red, green and blue — are put together to create a pixel.

The LEDs are mounted directly on the front of the display.

This improves the efficiency with which the LEDs use light, offers images with higher contrast in both light and dark environments, and provides a wider color gamut than NTSC screens. It also improves video image response time and offers wider viewing angles than existing LCD and plasma displays.

Power consumption is less than 70 watts, Sony claims. The display has a viewing angle of about 180 degrees.

Sony’s crystal LED display is a direct-view matrix of LEDs, as opposed to an LED-backlit LCD, according to NPD DisplaySearch Research Vice President Paul Semenza.

Direct-view LED displays are usually made for outdoor billboards or large indoor signs and are meant to be viewed from tens of meters away. The screen adds to the interest in the technology race for large-sized flat panel TVs, Semenza said.

However, the method used — clustering RGB diodes to form a full color pixel — is not new. This approach is used to make conventional LED panels.

The pixels crated are usually square. They’re spaced evenly apart and are measured from center to center when calculating resolution.

Jerry-Tron” at Cowboys Stadium in Denver, claimed to be the largest HDTV screen in the world, uses conventional LCD panels with a twist. Each pixel consists of four LEDs — two red, one green and one blue — instead of the more usual three, one of each color. The screen measures 160 by 72 feet.