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fsphil / hacktv

Analogue TV transmitter for the HackRF
GNU General Public License v3.0
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EIA-608 closed captioning for NTSC #35

Open Zcooger opened 5 years ago

Zcooger commented 5 years ago

Hello. This ticket is made to suggest adding closed captioning signal (EIA-608) used to broadcast subtitles for the transmission in NTSC system.

LD-Decode guys announce support for decoding the CC data: https://www.facebook.com/groups/2070493199906024/permalink/2345606389061369/ Example capture of NTSC subtitles in the picture: https://www.youtube.com/watch?v=I0y_BjqE26A Technology Connections CC history video: https://www.youtube.com/watch?v=6SL6zs2bDks Technical data: https://en.wikipedia.org/wiki/EIA-608

fsphil commented 5 years ago

I'd like to add this at some point. I've only had a quick look, but so far I've been unable to find a copy of the specification.

fsphil commented 3 years ago

I don't have a decoder yet, there is one on the way so hopefully I can have a play with this soon.

fsphil commented 7 months ago

"soon" turned out to be two years. I've have had some success with EIA-608 on both NTSC and PAL. I'll try and get it published soon.... (but sooner than two years).