Moshe Nissim (moshe++at++orad.co.il)
Wed, 29 Jul 1998 16:56:51 -0700
> Say you have 3 pipes, and needed 60 Hz, each pipe would render at
> 20Hz but would be genlocked & swapreadied to render at 120 degrees
> out of phase with each other. Every 60 Hz vertical retrace therefore,
> one of the pipes would have completed rendering the channel and that
> pipe will send LVDS digital video to the display generators where
> you take either digital or analog video to the display. All display
> generators are daisy chained on the LVDS bus, so you need only tap
> one DG board for the final output.
Congratulations on the new product!
But as usual, some questions:
- what is a LVDS ? What physical form does it take? (single coax?, etc.)
- Is the alpha channel transferred as well?
- Do all the pipes have to be on the same machine? (assuming a
different,
networked, software sync mechanism)
- How are drops handled? (in the above example, one pipe taking longer
than 3/60 seconds to complete rendering pass)
Is there a software sync (is the "sending to LVDS" triggered by a
software call? Or by fixed scheduling in the DPLEX doughter boards?)
- What is exactly meant by "tap one DG board for the final output"?
Does the pipe that is connect to the outputting DG do actual rendering?
Is the DPLEX hardware on it different?
- Is the whole framebuffer transferred or just one DG output channel?
Bye,
Moshe
----
Moshe Nissim
Orad Hi-Tec Systems
moshe++at++orad.co.il
972 9 7676862
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