Unusual software carriers. (Was :Vinyl Data- Classic Computers )

[Gordon J. C. Pearce MM3YEQ]

On Thu, 2008-10-02 at 00:02 -0400, Roy J. Tellason wrote:

> I've also been curious for some time as to how one could "pick off" a specific 
> scan line to get at whatever data was in there,  so if that circuit is online 
> anyplace I'd be interested in taking a look at it,  even if it's not 
> precisely the same thing.

Detect vsync then count hsync pulses.  Or, if you can make it accurate
and stable enough, a monostable.

Gordon