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Digital TV goes mobile in Japan

Posted: 19 May 2004 ?? ?Print Version ?Bookmark and Share

Keywords:ntt docomo? kddi? mobile phone? digital tv broadcast? 3g handset?

NTT Docomo Inc. and KDDI Corp. are showing prototype mobile phones capable of receiving terrestrial digital TV broadcasts.

KDDI has been working with Japan Broadcasting Corp. (NHK) to develop a mobile phone that can receive digital TV programs and simultaneously download related program data. The team demonstrated digital TV reception last year, but the system was about the size of a paperback book. All functions and an antenna have since been incorporated into a 140g handset based on an available 3G handset.

The battery employed for the handset provides power for about two hours of TV reception.

Japan's terrestrial digital TV broadcasts include mobile broadcasting as well as high-definition programming on regular home receivers. Mobile broadcasting will begin sometime next year using a H.264 codec that will make use of the limited bandwidth for mobile broadcasting. The downloading of program data is expected to be a key application for future mobile phones.

NTT Docomo has shown a concept model it says demonstrates how TV functions can be integrated into mobile phones. The prototype consists of mobile handset and a dock with a hard-disk drive in it. The handset fetches desired programs from the hard drive.

Leading Edge Design, a Japanese industrial design house, designed Docomo's concept model.

- Yoshiko Hara

EE Times

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