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DLP chips equip handsets with nHD pico projectors

Posted: 24 Feb 2010     Print Version  Bookmark and Share

Keywords:DLP chip  digital light processor  pico projector 

nHD DLP chips

Texas Instruments Inc. has unveiled its latest digital light processor (DLP) chip that will enable the smallest of mobile phones with nHD resolution pico projectors at the Mobile World Congress.

"Our new nHD chipset for DLP pico projectors will enable even those thin flip phones to build in a projector," said TI's Frank Moizio, manager, DLP Emerging Markets business.

TI pioneered the MEMS technique of creating millions of movable micromirrors on a chip which reflect the light projected onto them thereby forming images on any projection screen—from the "big screen" at the digital cinema, to home projection TVs and now to hand-held pico projectors.

The nHD format (640 x 360 pixels) allows DVDs to be viewed at nearly their full resolution for sharp images even when they are projected at sizes over 50-inch diagonal.

TI's micromirrored chip reflects light from the source supplied by the OEM, which is usually three LEDs—red, blue, green—with which contrast ratios can be better than 1,000:1. A new low power Pico DPP2601/2607 ASIC/processor handles all the internal management functions for the micromirrors including power management.

TI's previous generation DLP chips are already in two mobile phones—available as a snap-on addition to the LG "Expo" smart phone and built into the Samsung W9600. Both these smart phones are of the "candybar" form factor which can accommodate the larger size of previous TI pico projector DLP chips.

The new nHD chipset, on the other hand, is small enough to fit in even the thinnest "flip" style mobile phone.

DLP pico projectors will soon begin appearing in digital cameras too, according to optical module maker Asia Optical, which announced that it was supplying digital cameras makers with DLP pico projection modules to begin appearing in commercial products later in 2010.

More than a dozen manufacturers are already using TI's DLP chipsets for free-standing pico projectors—most about the size of a pack of playing cards—including Optoma and Hewlett Packard—which are used for business presentations, gaming, embedded media players and as notebook accessories.

- R. Colin Johnson
EE Times





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