> Eric Thompson wrote:
> >
> > Who else besides NEC makes these on-screen display generators.  I've
> > been thinking about doing a text only display...
>
> Me too.  I've always been impressed by the crisp, clear textual displays
> most VCRs and TVs can generate on an NTSC display.
>
> Are these chips something you could actually get along with
> documentation ?  Chances are good you might even be able to
> gen-lock them (for overlay of text) to an incoming NTSC signal.

Just remember I got some data sheets from Philips regarding this kind of chips.

The Philips part is PCA8516 *Stand alone OSD* (OSD for On Screen Display? )

They sent me the complete data sheets by mail and guess it can be also
dowloaded from their web page (http://www.semiconductors.philips.com)

Interfaces to a CPU via I2C (400Kbaud) or 3 wire serial interface ( 1Mbaud)
for data/command transfer. Characters can be displayed at different sizes
and positions, make it blinking, etc.

There is no graphich display capability as far as I understand. The chip is
designed to be used in camcorder applications or high end TV.

Would be nice to play with such a thing ! ;-)


Luis Fernandez Cormenzana
RadioBit Sistemas, S.L.

Fax/Tel:+34-6-585 64 57
e-mail: radiobit@dragonet.es