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Tuesday, April 12, 2011
 LG Introduces Tweet-TV and Glasses-Free 3D Mobile DTV
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Message Text: The future will fit in the palm of your hand. The first mobile digital TV that displays 3D images broadcast via the ATSC Mobile DTV Standard is being demonstrated by LG Electronics at the 2011 NAB Show here this week.

The prototype 7-inch receiver is designed with auto-stereoscopic capability that eliminates the need for special viewing glasses to see 3D TV images.

LG also showcases a social network services application for the first time. Viewers engaged with Tweet-TV would be able to interact with program content and submit their comments on programs. The broadcaster consolidates the real-time comments and transmits those short messages with the video and audio, enabling a transparent conversational overlay. The application enables viewers to carry on an open discussion of program content or reply to questions that could be part of an audience quiz.

In addition, to show how local TV broadcasters can now offer more than just linear TV channels, LG Electronics is showing its first Android-enabled smartphone prototype equipped with Mobile Digital TV (MDTV) reception, which offers conditional access functionality for future subscription broadcasts and the capability of receiving "non-real time" data such as electronic coupons or "real-time" data reception with applications like Tweet-TV.

In collaboration with Roundbox, LG is demonstrating the new "Tweet-TV" mobile DTV application that will allow viewer "tweets" to be displayed interactively on a mobile DTV receiver while a program is airing. A Harris MDTV transmitter will deliver viewer tweets that are received as data files and displayed in a transparent panel over a portion of the LG mobile DTV screen, a prototype version of an LG Android smartphone.

In the Las Vegas demonstration, the 3D signals are being internally transmitted at the Convention Center to receivers throughout the North Hall. Receiving the signal is LG?s prototype receiver built around the LG2161 demodulator chip and LG-exclusive 3D formatting circuitry that combines the side-by-side left and right images for viewing without the need for 3D eyewear commonly used for 3D TVs.

The seven-inch barrier-type LCD display shows 3D images. With its built-in antenna, the device also receives conventional 2D 416?240 resolution MDTV broadcasts and scales images up to 800?480 resolution. It also functions as an attractive digital photo frame when not being used as a Mobile DTV receiver.

Non-real time services such as electronic couponing and video-on-demand are made possible by the versatile ATSC Mobile Digital TV standard now being deployed by broadcasters throughout the U.S. KLAS-TV 8 (RF channel 7) is transmitting digital coupons for electronics stores and restaurants during CES.

The smartphone prototype for both the Electronic Coupon and Tweet-TV demonstrations is LG?s first full-touch CDMA device with built-in Mobile DTV circuitry. Running the Android 2.2 (Froyo) operating system and LG?s second-generation MDTV chip, the fully-featured Smartphone includes a 3.2″ HVGA screen, 3 megapixel camera, GPS and Wi-Fi capability, and other features such as an accelerometer, digital compass, and ability to play back a variety of audio and video codecs.

LG Electronics is producing the components for Mobile DTV reception ? the LG2161R single chip design that includes both the tuner and demodulator in a seven-by-seven millimeter square package. This key component of mobile DTV receivers already can be found in a variety of new products being introduced by various manufacturers this year for mobile DTV, from laptop USB accessory receivers to prototype netbooks with integrated mobile DTV tuners.
 
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