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For Immediate Release
ATSC Aproves Enhancements to DTV Standard
E-VSB Provides
Additional Flexibility
WASHINGTON, D.C., July 20, 2004 – The Advanced Television Systems Committee, Inc. (ATSC) has approved an amendment to the A/53C DTV Standard that adds a new optional mode of transmission called Enhanced VSB (E-VSB).Services transmitted in the E-VSB mode have additional forward error correction coding layers that allow reception under weaker signal conditions.
“E-VSB was
developed in response to the desire of broadcasters to add more flexibility to
the DTV Standard” said Mark Richer, ATSC president. “E-VSB was chosen from
among multiple technologies after a rigorous evaluation process that included
laboratory and field tests.”
E-VSB provides optional modes of operation
that allow broadcasters to trade-off data rate for a lower carrier-to-noise
threshold for some services. Examples of potential applications for E-VSB
include delivery of “fall back” audio, programming services targeted at small
DTV receivers with indoor antennas, non-real time transmissions of file-based
information to handheld and pedestrian receivers, and robust data broadcasting
to devices such as desktop and laptop computers. The ATSC has previously
published a number of related Candidate Standards that support the E-VSB
System. CS/T3-608 and CS/T3-609 provide
transport specifications, and CS/T3-606 provides enhancements to the ATSC PSIP
Standard (A/65). Enhancements to AC-3 audio (E-AC-3) are contained in documents
CS/T3-613 and CS/T3-614. ATSC Standards and Candidate Standards are available
at www.atsc.org/standards.html.
The Advanced Television Systems
Committee, Inc. is an international, non-profit organization developing voluntary
standards for digital television.The
ATSC member organizations represent the broadcast, broadcast equipment, motion
picture, consumer electronics, computer, cable, satellite, and semiconductor
industries.
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