Tv.spin

Mike Cook · 2006-04-01 17:36

Is it possible to get a schematic for the TV.SPIN object?

Thanks

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Mike
"OEM NMEA GPS Module" Now available on ebay for only $17.49
http://www.allsurplus.net/Axiom/

http://www.allsurplus.net/CNC/

Mike Cook · 2006-04-01 17:59

Found this post from Jon:

For color composite video out you need three pins, three resistors, and an RCA jack: 
 
  A12 -----[noparse][[/noparse] 1.1k ]-----*-----> composite out
                        |
  A13 -----[noparse][[/noparse] 560  ]-----*
                        |
  A14 -----[noparse][[/noparse] 270  ]-----+

So that answers the initial question. Is it possible to do an overlay on top of another video signal?

Thanks,

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Mike
"OEM NMEA GPS Module" Now available on ebay for only $17.49
http://www.allsurplus.net/Axiom/

http://www.allsurplus.net/CNC/

Jon Williams · 2006-04-01 18:22

I think you would need a sync detect circuit on the incoming video and use that to trigger the tv.spin object; some sort of signal mixing would be required as well.

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Jon Williams
Applications Engineer, Parallax

Kaos Kidd · 2006-04-03 14:28

What about overlaying two Spin.TV outputs?

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Just tossing my two bits worth into the bit bucket

KK
·

Jon Williams · 2006-04-03 14:31

You could have two cogs writing to the same RAM buffer and then one TV object handling the rest. The frame buffer address would need to be known to any cog that wants to write to it.

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Jon Williams
Applications Engineer, Parallax

Post Edited (Jon Williams (Parallax)) : 4/3/2006 3:15:24 PM GMT

Kaos Kidd · 2006-04-03 14:43

Thanks Jon!
I though it would be something along thoes lines, but I wasn't sure.

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Just tossing my two bits worth into the bit bucket

KK
·

Tv.spin

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