--- Duncan Webb <[EMAIL PROTECTED]> wrote:  
> It is simple enough to get the time from teletext,
> every second a packet 
> 30 is sent on magazine 8 which contains the date and
> time. 

I'm not sure if this is the same method as mentioned
above, but I know that some VCRs are able to set their
time based on a VBI XDS packet which is detailed here:
http://captioning.robson.org/articles/general/nv-line21.html
under the section "XDS data".  I guess only a few
channels will generate this packet.

I played around a little with the ZVBI library:
http://zapping.sourceforge.net/ZVBI/index.html
They provide an example program called "network.c"
Which decodes the network id XDS packet of the current
channel.  You just have to modify it to use the device
of your choice (/dev/vbi0 or whatever).  This could
probably be modified to get the time of day packet.  I
can try it when I get a chance.

Jim

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