Time code was being used by the government for all sorts of exciting
things, like recording A-bomb blasts. I'm sure the first variant was
used on conventional fast spooled movie film.
-Chuck Harris
jimlux wrote:
On 2/22/11 12:12 PM, Magnus Danielson wrote:
Hi Jim!
On 02/22/2011 02:34 PM, jimlux wrote:
On 2/21/11 10:12 PM, Michael Lombardi wrote:
I'm trying to determine the first product that could automatically
decode and display a digital time code. Digital time codes were
added to WWV in 1960 and WWVB in 1965. This was before they were
added to any satellite signals, or before they were added to LF
stations in Europe, such as DCF77. Telegraphic time codes, of
course, were around much earlier.
the IRIG standaards started in the late 50s, and I'm pretty sure that
they used time code when recording on instrumentation recorders earlier
than that. You'd record a bunch of analog signals using FM on a
multitrack recorder, and because the playback speed varies and the tape
stretches, you need something to recover actual timing.
The NASA 36 bit time-code seems to pre-date both IRIG and WWV broadcast.
NASA didn't exist until 1958, but I suspect that there were folks doing
time code and it just came along for the ride.
_______________________________________________
time-nuts mailing list -- [email protected]
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
