Interesting news on ATSC data standard

[Gregg Lengling]

Subject: ATSC Publishes IP Multicast Specifications for Data
Broadcasting
From: ATSC

A Bridge Between the Internet and Digital Television

The Advanced Television Systems Committee (ATSC) has approved and
published a
new standard designed to enable next-generation applications of data
broadcasting. ATSC Standard A/92 'Delivery of IP Multicast Sessions over
ATSC
Data Broadcast', specifies the delivery of Internet Protocol (IP)
multicast
sessions, the delivery of data for describing the characteristics of a
session, and usage of the ATSC A/90 Data Broadcast Standard for IP
multicast-
based Data Broadcast Services.

Standard A/92 defines a model whereby standard IP network terminology
and
concepts can be applied to the transmission of IP multicast services in
an
ATSC transport stream. Regis Crinon, Ph.D., the principal architect of
the
new standard explained, "When creating, inserting, and transporting IP
packets through a transport stream, rules need to be established to
define
what constitutes an IP network or sub-network and how services on such
network can be discovered. This is critical for all implementations, as
there
is the strong potential for IP address conflicts without such rules.
A/92
truly establishes a bridge between Internet Protocols and ATSC
Protocols."

ATSC Standard A/92 defines a variety of ways for signaling an IP
multicast
service within the service description framework defined by the A/90
specification. Detailed usage recommendations are provided for each
scenario.

"With this important ancillary specification for the ATSC Data Broadcast
Standard, broadcasters and other service providers are positioned to
participate in a wide range of new services to consumers," said Mark
Richer,
President of ATSC.

The A/92 standard, and all other technical documents, are available from
the
ATSC Web site at http://www.atsc.org/standards.html



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Gregg R. Lengling
RCA P61310 61" 16x9
gregg@camelcomm.com