29 Apr
2004
29 Apr
'04
10:46 a.m.
I only know plasma panels from earlier days, when they
were applied by
their original inventor to the terminals of the PLATO system. Those
[...]
addressing in core memories. So those plasma panels
had inherent
memory, no refresh needed.
I have a plasma display on my HP Intyegral, and I am darn sure it gets
continuosuly refreshed, The video controller, on logic board B, is an HP
custom chip with some DRAM hung off it. The signals to the display itself
are very similar to those used to drive a dot matrix LCD panel -- there
seems to be a dot clock, horizontal sync (start of a new line), vertical
sync, and a number of data lines.
That panel takes an 18V or so power input, but there's certainly a
step-up converter on the back of the panel.
-tony