I have modulated diodes to almost 1 Ghz. Around 1 Ghz they start to have interesting intracavity effects. The drivers are nothing magical to get to 10 Mhz for video. Old cathode driver chips for fast CRTs and a booster transistor will get you there.
You need a resonant scanner for the horizontal. I have one I no longer need at 3.89 Khz, PM me, I'll sell it to you at my cost, unless you live in one of the nations I cannot export to.
if you notice, 3.89 x 4 = 15,570 Hz NTSC rate.
This guy got banned here, but he has Youtube videos and finally, after realizing MEMs chips made his "great new secret technology" obsolete, posted some details at laser pointer forums. He filed a piece of steel sheet to resonate at the PAL Horizontal line frequency. So you would use a resonant scanner and a normal galvo. You phase lock your clock off the resonant scanner with a probe beam or other means to pick up the resonance. The probe beam scans a diffraction grating to make the pixel clock, this helps with linearizing the display as the resonant scanner does not produce a ramp waveform but a sinusoid. SLTVM did not linearize, and his stuff still came out decent because the sync board he ripped out of the TV had the "parabolic" correction for the TV yoke and screen curvature nonlinearity.
His downfall was making a A&& of himself here, we have enough engineers and PhDs and skilled tinkers here that we could not stand his blurry pictures and attempts at finding a licensee without disclosing details. While we respect proprietary research here, he blew it with his annoying posts. Which is a shame, because the way he did it could have been mass produced for cheap. It was his masters project, and you are supposed to disclose somewhat if your college is paying the bills.
Good Luck,
Steve
Some Links,
http://laserpointerforums.com/member...laser-scanner/
http://www.youtube.com/results?searc...sltvm2007&aq=f
http://www.youtube.com/results?searc...sltvm2007&aq=f
http://www.fpga4fun.com/
http://www.knjn.com/
Steve
Last edited by mixedgas; 09-23-2010 at 15:24.
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When I still could have...