[opendtv] Re: More NTSC B&W to NTSC Color
- From: "TLM" <TLM@xxxxxxxxxx>
- To: <opendtv@xxxxxxxxxxxxx>
- Date: Wed, 6 Feb 2013 20:28:23 -0800
So if a new standard were to be developed today for, say, high frame rate
video (48, 60, 72, 120), or whatever - should it support 1000/1001 or just
go integer and just cut the cord?
-----Original Message-----
From: opendtv-bounce@xxxxxxxxxxxxx [mailto:opendtv-bounce@xxxxxxxxxxxxx] On
Behalf Of Cliff Benham
Sent: Wednesday, February 06, 2013 8:03 PM
To: opendtv@xxxxxxxxxxxxx
Subject: [opendtv] Re: More NTSC B&W to NTSC Color
The FCC rules for b&W broadcasting about shutting off the color burst
remained in place until the late 1970s or early 1980s when they were changed
because newer broadcast equipment could not deal with a video signal that
didn't include color burst. [Newer equipment was synchronized with a single
'black burst' signal instead of the five H. drive, V. drive, sync, blanking
and subcarrier.]
I'm sure the networks as well as all the local stations continued to
broadcast at 30.00 Hz for B&W, switching to 29.97 for color broadcasts
during the B&W to color transition period which lasted well into the 1970s.
I doubt there was any complete switch countrywide 'all at once'
switch to 29.97 until well after the to the B&W rule was changed.
Cliff Benham
On 2/6/2013 6:13 AM, Kirk Bayne wrote:
> I still don't understand how the transition from 30.00fps NTSC B&W to
> 29.97fps NTSC Color was accomplished.
>
> Example: CBS broadcast some programs in Color from late 1953 till
> (full prime time color) 1966, did CBS switch from 30.00 to 29.97 for
> the Color broadcasts, then back to 30.00 for the B&W programs, or did
> CBS use
> 29.97 for all Network broadcasts (B&W and Color)?
>
> Kirk Bayne
>
>
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