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The Transmission of IP Over the Vertical Blanking Interval of a Television Signal (RFC2728)

IP.com Disclosure Number: IPCOM000003323D
Original Publication Date: 1999-Nov-01
Included in the Prior Art Database: 2000-Sep-13
Document File: 18 page(s) / 45K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

R. Panabaker: AUTHOR [+3]

Abstract

This document describes a method for broadcasting IP data in a unidirectional manner using the vertical blanking interval of television signals. It includes a description for compressing IP headers on unidirectional networks, a framing protocol identical to SLIP, a forward error correction scheme, and the NABTS byte structures.

This text was extracted from a ASCII Text document.
This is the abbreviated version, containing approximately 6% of the total text.

Network Working Group R. Panabaker

Request for Comments: 2728 Microsoft

Category: Standards Track S. Wegerif

Philips Semiconductors

D. Zigmond

WebTV Networks

November 1999

The Transmission of IP Over the Vertical Blanking Interval of a

Television Signal

Status of this Memo

This document specifies an Internet standards track protocol for the

Internet community, and requests discussion and suggestions for

improvements. Please refer to the current edition of the "Internet

Official Protocol Standards" (STD 1) for the standardization state

and status of this protocol. Distribution of this memo is unlimited.

Copyright Notice

Copyright (C) The Internet Society (1999). All Rights Reserved.

1. Abstract

This document describes a method for broadcasting IP data in a

unidirectional manner using the vertical blanking interval of

television signals. It includes a description for compressing IP

headers on unidirectional networks, a framing protocol identical to

SLIP, a forward error correction scheme, and the NABTS byte

structures.

2. Introduction

This RFC proposes several protocols to be used in the transmission of

IP datagrams using the Vertical Blanking Interval (VBI) of a

television signal. The VBI is a non-viewable portion of the

television signal that can be used to provide point-to-multipoint IP

data services which will relieve congestion and traffic in the

traditional Internet access networks. Wherever possible these

protocols make use of existing RFC standards and non-standards.

Traditionally, point-to-point connections (TCP/IP) have been used

even for the transmission of broadcast type data. Distribution of

the same content--news feeds, stock quotes, newsgroups, weather

reports, and the like--are typically sent repeatedly to individual

clients rather than being broadcast to the large number of users who

want to receive such data.

Today, IP is quickly becoming the preferred method of distributing

one-to-many data on intranets and the Internet. The coming

availability of low cost PC hardware for receiving television signals

accompanied by broadcast data streams makes a defined standard for

the transmission of data over traditional broadcast networks

imperative. A lack of standards in this area as well as the expense

of hardware has prevented traditional broadcast networks from

becoming effective deliverers of data to the home and office.

This document describes the transmission of IP using the North

American Basic Teletext Standard (NABTS), a recognized and industry-

supported method of transporting data on the VBI. NABTS is

traditionally us...