[78-L] Grooved video discs 78rpm resp. 1500rpm (''mechanical TV'')

[neechevoneeznayou at gmail.com]

I've seen the images online, some site about the history of television.

At 30 lines, the images are hardly big enough to call a postage stamp on 
a modern computer screen.

joe salerno


On 10/11/2012 5:27 AM, Benno Häupl wrote:
> .
> Scottish inventor John Logie Baird devolped a system using grooved discs
> that could reproduce moving pictures of 30 lines. Has anybody here seen
> (or own) a grooved video disc made according to this standard (around 1928)?
>
> BTW, currently there is on ebay.de a Telefunken/Decca video disc player
> up for auction, with some 70 discs. The grooved records turn at a speed of
> about 1500 revs/min.  It dates from the early 1970s. It fascinated me even
> when it was launched: you track grooves with a diamond needle and you get
> a color picture and sound!
>
> Only about 3,000 copies were sold, plus a TOTAL of about 30,000 discs!
>
> http://www.ebay.de/itm/RARITAT-TED-Bildplattenspieler-Telefunken-TP-1005-1975-VINTAGE-/290784965248
>
> So, does anybody on this list own a grooved Baird disc that runs at 78rpm?
>
> Benno
> .
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-- 
Joe Salerno