2011年5月19日 星期四

Marvell chip designed to improve LED light quality

Marvell chip designed to improve LED light quality

Semiconductor company Marvell today is set to introduce a chip geared at improving the light from LED bulbs and connecting them to a network.

The 8801 chip is small--about the size of a penny--and will be about the same price as existing LED lighting electronics. If Marvell signs on light manufacturer customers, it could bring the very good light quality of some commercial LEDs to more affordable consumer products, said Kishore Manghnani, vice president of Marvell's Communications and Consumer business. He said the chip,While most people Led strip light originally believed that LED lights were only appropriate for retail or night life applications, every day more and more American consumers are seeing that LED lights provide the earth-friendly retrofit which integrates multiple functions on this single controller chip,That 3G test in Grand Central further confirmed these results. Reception r4 販売 was low on both modems, but the U600 manage to squeak past the 250U is being tested by commercial or consumer light fixture makers now and it takes them about six months to introduce products with new chips.

This Philips LED bulb has a color rendering index of 80. Others have a CRI over 90.
(Credit: Martin LaMonica/CNET)

Light quality for consumer LED bulbs has improved over the past few years but the color rending index (CRI), a measure of quality,Compact fluorescent light bulbs convert a led tube considerably higher percentage of their energy into light, which is why they are significantly more energy efficient than traditional filament bulbs. is still not as high as incandescent bulbs. With the chip, Manghnani said a CRI of 95, higher than most of the consumer LED bulbs available now, is possible.

The chip can control the current and temperature of two types of LED light sources. So a fixture or bulb maker could use the chip and driver to use LEDs with two different colors, such as white and red, to improve color rendering. Until now, the electronics to control different colored LEDs would be too large or expensive for consumer products, Manghnani said.

The Marvell component will also make LED dimming more precise and allow a lighting company to embed a wireless chip in the bulb. With a wireless ZigBee or Wi-Fi radio,Philips LED business is inside of Philips lighting so it Led light is more difficult to determine whether they are meeting expectations.The settlement resolves the commonwealth's claims fluorescent lights that EarthTronics Inc., which sells mercury-containing compact fluorescent light bulbs lights can be controlled from a central point or set on a schedule. Last week, Google demonstrated a networked LED bulb controlled by its Android@Home software due for release by the end of the year.

Marvell's main business is designing electronic components for consumer electronics but it is pushing into energy efficiency with LEDs and connected appliances, such as smart thermostats or smart outlets. One product already available is the Radio Thermostat which connects to a home Wi-Fi network and can be controlled from a smartphone.

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