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Uniform Resource Identifiers for Television Broadcasts (RFC2838)

IP.com Disclosure Number: IPCOM000003437D
Original Publication Date: 2000-May-01
Included in the Prior Art Database: 2000-Sep-13
Document File: 5 page(s) / 10K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

D. Zigmond: AUTHOR [+2]

Abstract

World-Wide Web browsers are starting to appear on a variety of consumer electronic devices, such as television sets and television set-top boxes, which are capable of receiving television programming from either terrestrial broadcast, satellite broadcast, or cable. In this context there is a need to reference television broadcasts using the URI format described in [RFC 2396]. This document describes a widely-implemented URI scheme to refer to such broadcasts.

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Network Working Group D. Zigmond

Request for Comments: 2838 WebTV Networks, Inc.

Category: Informational M. Vickers

Liberate Technologies, Inc.

May 2000

Uniform Resource Identifiers for Television Broadcasts

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 (2000). All Rights Reserved.

1. Introduction

World-Wide Web browsers are starting to appear on a variety of

consumer electronic devices, such as television sets and television

set-top boxes, which are capable of receiving television programming

from either terrestrial broadcast, satellite broadcast, or cable. In

this context there is a need to reference television broadcasts using

the URI format described in [RFC 2396]. This document describes a

widely-implemented URI scheme to refer to such broadcasts.

2. Television URI

The basic structure of a television URI is:

tv:

where broadcast is a description of the data source. The description

takes the form of a DNS-style identifier for a particular broadcaster

or television network. For example:

tv:wqed.org the WQED station

tv:nbc.com the NBC network

3.1. Scheme-only form

A simplest form of the "tv:" URI scheme is used to refer to the

"current" or "default" channel:

tv:

This URI refers to whichever television broadcast is currently being

received by the device. It is often used in combination with HTML

content that is actually being broadcast along with the audio and

video, where the meaning of "current broadcast" is quite unambiguous

(because it is the broadcast along with which the content containing

the URI was received). This is in fact the most common usage of the

"tv:" scheme today, and is explicitly referenced by the recently

published specification of the Advanced Television Enhancement Forum

[ATVEF 1.1].

3.2 DNS-style identifiers

Television broadcasts traditionally have been identified in a variety

of ways. All terrestrial television broadcasters are assigned call

signs (such as "KDKA" or "WQED") to identify their signal. These are

generally assigned by national authorities (such as the Federal

Communications Commission in the United States) and are world unique.

The global namespa...