Network Working Group N. Earnshaw
Request for Comments: 4078 BBC Research and Development
Category: Informational S. Aoki
TokyoFM Broadcasting
A. Ashley
NDS Limited
W. Kameyama
GITS, Waseda University
May 2005
The TV-Anytime Content Reference Identifier (CRID)
Status of This Memo
This memo provides information for the Internet community. It does
not specify an Internet standard of any kind. Distribution of this
memo is unlimited.
Copyright Notice
Copyright (C) The Internet Society (2005).
Abstract
The Uniform Resource Locator (URL) scheme "CRID:" has been devised to
allow references to current or future scheduled publications of
broadcast media content over television distribution platforms and
the Internet.
The initial intended application is as an embedded link within
scheduled programme description metadata that can be used by the home
user or agent to associate a programme selection with the
corresponding programme location information for subsequent automatic
acquisition.
This document reproduces the TV-Anytime CRID definition found in the
TV-Anytime content referencing specification, and is published as an
RFC for ease of access and registration with the Internet Assigned
Numbers Authority (IANA).
Table of Contents
1. Introduction ....................................................2
2. Ancestry ........................................................3
3. Notation Used in This Document ..................................3
4. The CRID URL Scheme .............................................3
5. Examples of CRID Syntax .........................................4
6. Usage ...........................................................4
6.1. Normative Specification ....................................4
6.2. Role of Domain Name System (DNS) Namespace .................5
6.3. CRID Resolving .............................................5
6.4. CRID Related Metadata ......................................5
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