Access over 20 million homework & study documents

Case study -Digital Storage Media

Content type
User Generated
Type
Study Guide
Rating
Showing Page:
1/16
An Introduction to Digital Storage Media - Command and Control (DSM-
CC)
Vahe Balabanian, Liam Casey, Nancy Greene
Nortel
Chris Adams
Divicom
Copyright (c) 1996 Institute of Electrical and Electronics Engineers. Reprinted, with
permission, from IEEE Communications Magazine, November, 1996.
This material is posted here with permission of the IEEE. Such permission of the IEEE
does not in any way imply IEEE endorsement of any of the ISO/IEC MPEG's products or
services. Internal or personal use of this material is permitted. However, permission to
reprint/republish this material for advertising or promotional purposes or for creating new
collective works for resale or redistribution must be obtained from the IEEE by sending a
blank email message to info.pub.permission@ieee.org.
By choosing to view this document, you agree to all provision of the copyright laws
protecting it.
Abstract - DSM-CC (Digital Storage Media - Command and Control) is a very recent
ISO/IEC standard developed for the delivery of multimedia broadband services. Open
protocols in this area are essential for the widespread deployment of such services. Total
interoperability between service providers and consumers will require many different
aspects of broadband service delivery to be addressed. This article gives an introductory
overview of the different functions covered by the DSM-CC standard. Its purpose is to
convey the scope of the DSM-CC standard and the basic reference model that
underpinned the development of the standard.
1. Introduction
A major factor that will affect the deployment of broadband services to the home is the
availability of open application service protocols. Without such protocols, every service
delivered to the home would require its own interface to receive it. Open protocols would
allow set top boxes, PCs or other information appliances to access multiple services from
multiple service providers.

Sign up to view the full document!

lock_open Sign Up
Showing Page:
2/16
The MPEG-2 ISO/IEC 13818-1 Standard for encoding/decoding of video streams
contains an early version of DSM-CC where a simple stream control protocol for MPEG-
2 Transport Streams is introduced [2]. This work on DSM-CC has evolved to over 400
pages in the current ISO/IEC 13818-6 International Standard [1]. DSM-CC now provides
the protocols needed to deliver a complete application such as video on demand or home
shopping.
The Digital Audio-Visual Council (DAVIC), a non-profit association with a membership
of over 200 corporations from over 20 countries, is defining one of the first uses of DSM-
CC. DAVIC encourages the success of emerging digital audio-visual applications and
services over various networks by the timely availability of internationally agreed
specifications of open interfaces and protocols. DAVIC has adopted DSM-CC in its
DAVIC 1.0 Specification [3] where it is used as the protocol for control of multimedia
interactive sessions, the resources within the sessions, and for service level interactions.
As well, new work in DAVIC is applying DSM-CC to Internet access [4].
Use of DSM-CC for multimedia conferencing applications is taking place in ITU-T Study
Group 8 as part of the T.120 Multimedia Conferencing Recommendations, as well as in
an informative annex in DSM-CC.
DSM-CC is transport layer independent. In this way any application written to use DSM-
CC need not concern itself with the underlying transport layer the application will use
between the Server and the Client. The same application can be delivered over a
multitude of broadband networks, ranging from a pure MPEG-2 Transport Stream (TS)
network, to a Core ATM and a variety of access networks, with or without ATM, even
including high-speed local area networks (LANs), to end-to-end ATM networks.
This article gives a general introduction to DSM-CC. DSM-CC covers a number of
distinct protocol areas:
Network Session and Resource Control
Configuration of a Client
Downloading to a Client
VCR-like control of the video stream
Generic Interactive Application Services
Generic Broadcast Application Services - Data and User-User Object Carousel,
and Switched Digital Broadcast Channel Change
The key to DSM-CC is in its flexibility: Each protocol area can be used standalone, or in
concert with other protocol areas, depending on the application(s) being addressed. This
article gives a synopsis of each of the protocol areas, after the following section
introduces the basic reference model around which DSM-CC is built.
2. DSM-CC Functional Reference Model

Sign up to view the full document!

lock_open Sign Up
Showing Page:
3/16

Sign up to view the full document!

lock_open Sign Up
End of Preview - Want to read all 16 pages?
Access Now
Unformatted Attachment Preview
An Introduction to Digital Storage Media - Command and Control (DSM-CC) Vahe Balabanian, Liam Casey, Nancy Greene Nortel Chris Adams Divicom   Copyright (c) 1996 Institute of Electrical and Electronics Engineers. Reprinted, with permission, from IEEE Communications Magazine, November, 1996. This material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE endorsement of any of the ISO/IEC MPEG's products or services. Internal or personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution must be obtained from the IEEE by sending a blank email message to info.pub.permission@ieee.org. By choosing to view this document, you agree to all provision of the copyright laws protecting it. Abstract - DSM-CC (Digital Storage Media - Command and Control) is a very recent ISO/IEC standard developed for the delivery of multimedia broadband services. Open protocols in this area are essential for the widespread deployment of such services. Total interoperability between service providers and consumers will require many different aspects of broadband service delivery to be addressed. This article gives an introductory overview of the different functions covered by the DSM-CC standard. Its purpose is to convey the scope of the DSM-CC standard and the basic reference model that underpinned th ...
Purchase document to see full attachment
User generated content is uploaded by users for the purposes of learning and should be used following Studypool's honor code & terms of service.

Anonymous
Super useful! Studypool never disappoints.

Studypool
4.7
Trustpilot
4.5
Sitejabber
4.4