Teletext was an early mainstream precursor to the web that became successful in the UK and France: hundreds of low-res pages a day streamed in the invisible overscan margins of the TV signal. It died with analog television; archivists are finding the original data can be recovered from VHS tapes.
Technology is changing that. The continuing boom in processor power means it’s now possible to feed 15 minutes of smudged VHS teletext data into a computer and have it relentlessly compare the pages as they flick by at the top of the picture, choosing to hold characters that are the same on multiple viewing (as they’re likely to be right) and keep trying for clearer information for characters that frequently change (as they’re likely to be wrong).
It's an interesting study in horsepower: it takes such "phenomenal processing power" to accurately and reliably scan VHS recordings of text that we're only now on the cusp of being able to do so.
That hundreds, even thousands of frames of each teletext page are required to OCR each one is also a powerful tribute to just how astoundingly awful VHS is.
Mister Rogers sings “Won’t You Be My Neighbor?” on the February 19, 1968 debut of Mister Rogers’ Neighborhood and then on the final episode August 31, 2001.
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Want to keep the dentist away? A little tooth care at morning and night isn’t bad, but it won’t keep the stains from smoking or fried foods at bay for long. If you enjoy your food and want to avoid the consequences, an upgrade from that old analog toothbrush can make a huge difference. Among […]
If your office works at all, it uses Microsoft Office. Those icons for Word, PowerPoint, and Outlook are as familiar around some workplaces as the coffee machine. So familiar, in fact, that they get taken for granted – and rarely used to their full potential. Whether you need a crash course in the essential tools […]
It’s a great time to be a maker. 3D printers are on store shelves for anyone to buy, and coder kits like Arduino and Raspberry Pi are letting kids as young as 9 or 10 dive into the Internet of Things. Here are a few examples of our favorite tech toys, all priced low enough […]