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May 18, 2007
SAMSUNG And ROHDE & SCHWARZ Win TV Technology's
Star Award For A-VSB Mobile DTV Technology At NAB
2007
The TV Technology STAR Awards Celebrate
Top Technological Innovations
in Broadcasting.
RIDGEFIELD PARK, N.J., May 2, 2007 -
Samsung Electronics and Rohde & Schwarz announced that their
co-developed Advanced-VSB (A-VSB) Mobile DTV system has won TV
Technology magazine's STAR Award (Superior Technology Award Recipient) at
the 2007 National Association of Broadcasters (NAB) convention. A-VSB
is a proposed open standard, ready to roll out
in time for the February 2009 transition to all-digital
TV broadcasting, that broadcasters can implement at low cost,
providing an all-new distribution channel to reach consumers with
live TV on the go via portable media devices,
whether traveling by car, bus, train, or walking down
the street. Together, Samsung Electronics and Rohde & Schwarz
have developed A-VSB as a dramatic enhancement to the
Advanced Television Systems Committee (ATSC) digital TV transmission standard.
"For
Samsung, NAB was a resounding success because we achieved
our goals of demonstrating a Single Frequency Network and
mobile reception using bandwidth-efficient ? rate Turbo and 10
byte SRS," said John Godfrey, Vice President, Government &
Public Affairs, Samsung Information Systems America, Inc. "Winning the
STAR Award is icing on the cake and we're
proud to accept this prestigious honor.
"For Rohde &
Schwarz , NAB 2007 was a great success," said
Mike Simon, Manager Advanced Technology, Broadcast Division, Rohde &
Schwarz. "Being recognized for proposed contributions to the ATSC
Standard is an honor. We look forward to the
future and completion of this work that will bring
new extensibility to the ATSC Standard and opportunities for
broadcasters."
Broadcasters' requirements are clear, and Samsung and Rohde
& Schwarz are confident A-VSB is the only system
to meet the broadcasters' requirements. A-VSB was created in
response to broadcasters' need for a single independently evaluated,
open, not proprietary standard, so the national market isn't
fragmented and consumers aren't confused. Also, broadcasters need a
solution quickly, in time to launch new commercial services
before the Feb. 2009 transition to all-digital TV broadcasting
(the analog shut-off) changes the landscape for TV broadcasting,
and A-VSB can meet that need.
For the duration of
NAB, live A-VSB transmissions were sent from local Sinclair
Broadcast Group TV station KVMY Las Vegas to mobile
receivers operating on a chartered bus in the Convention
Center area, using the station's current transmitter and frequency.
The same programming was re-transmitted at a second frequency
on a separate low-power Single Frequency Network (SFN). The
SFN was set up with the support of ION
Media Networks (which previously has conducted limited testing of
A-VSB in Tampa, Florida) and was operated under an
experimental license to ION from the Federal Communications Commission.
The SFN had three transmitter sites, two located on
structures north and south of the Convention Center along
the Las Vegas Strip and one inside the Convention
Center at the ATSC Digital TV Hot Spot. The
SFN demonstration showed how A-VSB makes it easy for
broadcasters to maintain complete signal coverage and transmission, filling
in gaps between buildings and behind mountains for maximum
service quality.
The technology is being standardized in ATSC, and
an ATSC-supervised lab test was conducted in November 2006,
with field tests to be mounted in the first
half of 2007. A completed standard is targeted for
2007, with implementation by broadcasters and consumer electronics manufacturers
beginning soon afterward, aiming toward widespread commercial services before
the February 2009 transition to all-digital TV broadcasting in
the United States.
Samsung announced at NAB 2007 that to
support the rapid development of new services and new
businesses for broadcasters, Samsung intends to make A-VSB evaluation
kits (including prototype transmission and reception equipment) available on
a limited basis to broadcasters and other partner companies
in the third quarter of 2007.
What is Advanced-VSB?
A-VSB
technology builds on the current ATSC transmission standard to
enhance the ability of receivers to display television broadcasts
while in motion, both indoors and outdoors. It also
allows broadcasters to include multiple "turbo-coded" streams within the
current main stream, resulting in stronger, clearer signal transmission.
In addition, A-VSB eases the synchronization of broadcast signal
timing among different towers in a Single Frequency Network
(SFN). SFNs can improve the quality of broadcast service
by providing uniform signal strength throughout a service area,
so that receivers can receive a stronger signal from
a nearby transmitter and take advantage of the spatial
separation of multiple transmitters to mitigate obstacles such as
hills and buildings.
A-VSB is backward compatible-broadcasters can implement A-VSB
technology with no impact on legacy (non-A-VSB) digital TV
receivers, which will ignore the added information in the
signal while continuing to receive the main TV stream
(e.g., High-Definition TV programming). In addition, as A-VSB technology
helps broadcasters deploy SFNs to fill gaps in the
coverage of their service area, owners of legacy receivers
may find their reception quality is also improved.
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