Re: PAL Video

[P3D John W Roberts <roberts@xxxxxxxxxxxxxxxxx>]

>Date: Wed, 6 Nov 1996 14:20:55 -0600
>From: P3D  <ReiPetras@xxxxxxx>
>Subject: PAL Video

>PAL was not invented by the British. It was invented by the German -  Prof.
>Walter Bruch. As an advantage to the NTSC system PAL has a built in error
>correction for the transmission of the color information.
>Since the East German government didn't want their people watch the West
>German television they chose the SECAM system (but slidely different than
>SECAM used in France). Both PAL and SECAM were introduced many years later
>than NTSC.

>Reiner

I believe someone once told me that PAL requires the storage of a line of
video information for the error correction to work. If this is correct,
do you recall how this was stored in the days before digital memories?
I have the impression that they used some sort of delay line.

John R


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