Ep 30: Ex BBC Engineer Returns to Tell More About Teletext #TechTalk #Deepdive – Part II
Broadcast Focus · Russell Trafford-Jones
Audio is streamed directly from the publisher (media.rss.com) as published in their RSS feed. Play Podcasts does not host this file. Rights-holders can request removal through the copyright & takedown page.
Show Notes
Peter Weizel spent many years in the BBC working on Teletext and even wrote part of the standards so who better to continue guiding us on our journey into the first digital broadcasting on TV. Teletext is a pioneering pre-internet information distribution system. In part one, we heard about the inception of Ceefax at the BBC and the some of the inner workings of Teletext, its page and data structures, and its significant role in modern broadcasting technology. Part One: https://youtu.be/tbDB8FCOaV4
In part 2, we go into detail about data broadcasting, government interference, dynamic allocation of packets, using teletext for BBC internal staff information, regionalising CEEFAX
00:00 Welcome and Introduction
01:42 Ceefax Demo
02:11 Teletext Services and Features
03:03 Finding ways to apportion the VBI
05:11 Government Wants To Sell Teletext Space
07:15 Dynamic Allocation and Optimisation
11:18 Better Data Multiplexing
26:55 Test Equipment
31:05 Early Ceefax Architecture
33:23 Ceefax in the regions
39:49 BBC FAX service in Europe (WSTV)
45:28 Telfax – Ceefax for BBC Staff
49:04 Conclusion and Next Episode Teaser
Many thanks to Nathan Dane for bringing Teletext to the internet: https://www.nathanmediaservices.co.uk
Shout out to @ZXGuesser for the online interactive teletext viewer.
Wikipedia's summary of Ceefax: https://en.wikipedia.org/wiki/Ceefax
Wikipedia's summary of Teleteix: https://en.wikipedia.org/wiki/Teletext