[opendtv] Casio, Fujitsu Make Phone Digital TV Receiver Chip-Nikkei
- From: Craig Birkmaier <craig@xxxxxxxxx>
- To: OpenDTV Mail List <opendtv@xxxxxxxxxxxxx>
- Date: Tue, 30 Nov 2004 07:15:23 -0500
Casio, Fujitsu Make Phone Digital TV Receiver Chip-Nikkei
November 30, 2004 12:00am
Source: Nihon Keizai Shimbun America, Inc.
Nikkei English News: TOKYO (Nikkei)--Casio=20
Computer Co. (6952.TO) and Fujitsu Ltd. (6702.TO)=20
have jointly developed a high-performance OFDM=20
(orthogonal frequency division multiplexing)=20
demodulation chip for reception of terrestrial=20
digital broadcasts by cellular phones, the Nikkei=20
Business Daily reported in its Tuesday edition.
The new signal reception chip is more than 100=20
times as sensitive as devices made to date,=20
enabling even people on speeding trains to=20
receive and watch digital television broadcasts=20
on their phone screens.
Digital TV broadcasting for phones is expected to=20
become available in the first quarter of 2006, so=20
Casio and Fujitsu aim to have a commercial=20
product ready in time for this.
The plan is to make the new chip available first=20
to Casio Hitachi Mobile Communications Co. and=20
possibly to other handset makers later on.
A conventional OFDM demodulation chip analyzes=20
signal frequency and strength to compensate for=20
signal loss. The new chip also analyzes data=20
along the time axis, correcting the waveform as=20
the receiver passes through the shadows of=20
buildings or moves closer to or farther from=20
broadcast antennas. The circuitry also has a=20
function to adjust the tuner to pick up the=20
optimal signal when signals reflect off=20
buildings, and a supplementary antenna that=20
controls the directionality of the primary=20
antenna for reception of a stronger signal.
Casio designed the chip incorporating these three=20
extra features, and Fujitsu added memory and=20
peripheral circuitry to obtain a single-chip=20
solution.
<<Nikkei English News -- 11/29/04>>
<< Copyright =A92004 Nihon Keizai Shimbun America, Inc. >>
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