[opendtv] Re: Color Affiliate - B&W Network
- From: Gary Blievernicht <garybliev@xxxxxxxxx>
- To: "opendtv@xxxxxxxxxxxxx" <opendtv@xxxxxxxxxxxxx>
- Date: Thu, 7 Feb 2013 06:06:44 -0800 (PST)
My recollection based on working at the CBS affiliate in the 70's was that we
would generally do a glitch take to the network from local programming. I
suspect that in the 60's the case was the same. i.e. the network might be at
29.97 and the local station at 30.0 and all would be fine, excepting the glitch
switch. If the station needed to "super" or "key" something over the network
generally the station would gen-lock the synchronization generator to the
network for the transition and key, then get back out of gen-lock as soon as
possible. This was in the 70's and the station and the network were both
29.97 by then.
I don't know if a local synch generator would have sufficient margin to have
genlocked to a source that was 1000/1001 incorrect.
________________________________
From: Kirk Bayne <lis2lis2@xxxxxxxxxxx>
To: opendtv@xxxxxxxxxxxxx
Sent: Thursday, February 7, 2013 3:24 AM
Subject: [opendtv] Color Affiliate - B&W Network
It seems that, prior to the Jetsons Color broadcast
in the 1960s, the ABC Network feed was 30.00fps B&W.
Prior to the Jetsons, it must have been a challenge
for affiliates of ABC that had local Color ability
(or were affiliated with NBC or CBS also) to have
to change between 30.00 and 29.97.
With the technology available then, it wasn't possible
for a local affiliate to convert 30.00 to 29.97.
I don't recall reading anything about this type of
problem during the transition to Color though.
Kirk Bayne
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