What is NTSC 4.43 versus NTSC 3,58 ?????
Keith Littleton
a NTSC video and television system. However,
he told us that it is a 4.43 ("color
reference frequency NTSC"), not the 3.58
("color reference frequency") system,
we have in the United States and Canada.
Can someone explain what the difference
between 4.43 versus 3.58 NTSC "system"
means? I was told that the 4,43 NTSC
is the "European NTSC".
How does 4.43 versus 3.58 effect the use
of a NTSC camcorder bought in the United
States?
Any advice about this problem would be
greatly appreciated.
Yours,
Keith
New Orleans, LA
Larry Jandro
on a keyboard and the electrons formed this:
> One of my wife's friends, in the Ukraine has
> a NTSC video and television system. However,
> he told us that it is a 4.43 ("color
> reference frequency NTSC"), not the 3.58
> ("color reference frequency") system,
> we have in the United States and Canada.
> Can someone explain what the difference
> between 4.43 versus 3.58 NTSC "system"
> means? I was told that the 4,43 NTSC
> is the "European NTSC".
It's a "poor man's" method of playing NTSC on PAL televisions, but
the color subcarrier of the NTSC must first be converted from 3.58
MHz to 4.43MHz. Some "multi-standard" VCRs can do this.
The idea was conceived back in the 70's long before inexpensive
standards converters became available.
Never caught on in the USA, but some European countries used it,
probably because it's relatively easy to do from NTSC to PAL, but
not in the reverse.
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Gary Tait
<kaol...@katie.vnet.net> wrote:
>One of my wife's friends, in the Ukraine has
>a NTSC video and television system. However,
>he told us that it is a 4.43 ("color
>reference frequency NTSC"), not the 3.58
>("color reference frequency") system,
>we have in the United States and Canada.
>Can someone explain what the difference
>between 4.43 versus 3.58 NTSC "system"
>means? I was told that the 4,43 NTSC
>is the "European NTSC".
>
>
NTSC is a colour coding method. the difference is
in the colour reference frequency,, the scan rates/lines
(I beleve it with be the Europen standard of 625 lines/25 FPS video),
and the audio offset (for broadcast signals)
>How does 4.43 versus 3.58 effect the use
>of a NTSC camcorder bought in the United
>States?
It most likely would not work.
David McCall
These are frequencies used for the color subcarrier in NTSC television systems.
There is a burst of this subcarrier at the beginning of each video line, then, that
same subcarrier is modulated by the color information. Amplitude modulated
for color level, and phase modulated for hue.
3.58 mhz is the frequency we use in North America.
4.43 mhz is the frequency they use in Japan.
I can't tell you why, or that it is actually true :-)
David
John Dyson
NTSC 4.43 is not really generally broadcast anywhere, but is a
compatibility mode generally for use in PAL countries.
Like the US, Japan uses 6MHz NTSC TV channels, and given the
4.2MHz available for video, and a 4.43MHz color subcarrier,
that wouldn't allow for color.
When arguing PAL vs. NTSC, and all of the various claims
(including the fact that some of the so-called PAL advantages
were actually specifically excluded from the NTSC back in
the late 1940's and early 1950's), the biggest 'advantage'
of PAL vs. NTSC is related to the wider channel widths available
in PAL countries and the higher subcarrier frequency. Given
the current spectrum allocations (both inter-channel and
intra-channel), the 4.43MHz subcarrier just does not fit in
the NTSC channels.
John
Larry Jandro
> 3.58 mhz is the frequency we use in North America.
> 4.43 mhz is the frequency they use in Japan.
AFAIK, 3.58Mhz is used by both the USA and Japan. The major
difference in the Japanese spec is that they do not use 7.5 IRE
setup. They're 0 (zero) like the PAL countries.
David McCall
Joseph Brown
> 4.43 mhz is the frequency they use in Japan.
I heard that there's no actual NTSC recording made in 4.43. It's used only
in playback of NTSC tapes on PAL TVs. All NTSC recordings are made in 3.38
and in Europe, when they want to playback NTSC, they use NTSC 4.43. The name
they gave it is : "NTSC playback on PAL TV"
Can somebody confirm this?
Larry Jandro
a keyboard and the electrons formed this:
> I heard that there's no actual NTSC recording made in 4.43. It's
> used only in playback of NTSC tapes on PAL TVs. All NTSC
> recordings are made in 3.38 and in Europe, when they want to
> playback NTSC, they use NTSC 4.43. The name they gave it is :
> "NTSC playback on PAL TV"
That's exactly what it is. The NTSC 3.58MHz subcarrier is
upconverted to 4.43 by the VCR so that the PAL monitor will lock to
it. No recordings are ever made using a 4.43 subcarrier. (AFAIK)
Maurice
Maurice <videoent...@btconnect.com>
www.videoenterprises-uk.co.uk
High Wycombe - UK
This message has been scanned for viruses
Essentially correct. 4.43 is a quasi-NTSC playback mode for PAL equipment if
they don't have proper NTSC. You can't record, nor even transfer from one to
the other.
"Joseph Brown" <joeb...@wdontspam.edu> wrote in message
news:cvfra.18112$0T5.2...@weber.videotron.net...
Thad Smith
While in Russia, I connected an NTSC camcorder to a PAL/SECAM/NTSC
multi-system TV. The luminance was OK, but there was only a slight
tinge of color. Most of the picture looked shades of grey, except for
strong reds which had a slight coloration. Might this be the effect of
the color subcarrier frequency difference?
Thad