Posted by Richard Crowley on 10/10/06 17:36

"Radium" wrote ...
> In the old days when only B&W TV existed, was anythere any such thing
> as a "subcarrier" in the video signal?

No.

> B&W TV had only greyscale. So I think that there would be something
> similar to color subcarrier, except the "colors" would actually be
> different shades of gray along with black and white.

Not really by conventional terminology. The b/w ("grayscale")
video is *baseband* video where the instantaneous voltage
of the video at any given point along the line directly represents
the brightness of the image at that point.
This is actually the definition of the "Y" part of "Y/C" or any
of the other component schemes based on "Y".

[Back to original message]