I was just old enough to be on the older end to appreciate this toy and to reall... | Hacker News

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		vel0city on July 10, 2023 \| parent \| context \| favorite \| on: A quick look back at when Microsoft made an intera... I was just old enough to be on the older end to appreciate this toy and to really dig the neat tech tricks it was pulling off. Thanks for making this cool toy. I always wondered what signaling the TV transmitter was looking for in the video stream. Was it extra data in the closed captioning area?

vitovito on July 10, 2023 [–]

This looks like the relevant patent for it: https://patents.google.com/patent/US6281939B1/en "Method and apparatus for decoding data encoded in the horizontal overscan portion of a video signal"

Zeetah on July 10, 2023 | [–]

Good job finding it. The patient calls out two other key patents.

It also describes how the data is encoded.

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