Originally Posted by Glimmie
Get a copy of the "Sony 9pin protocol". I assume you have a copy of the LD RS232 commands.
Take an old PC with two serial ports and write a translator. I would use C but a compiled BASIC could be used as well. Even an old 16mhz DOS machine can easily handle this task. When you get it working you can even port it to a single board computer with a FLASH disk boot.
I was thinking of possibly using a semi-custom microcontroller board with two UARTs on it, one set up for 232, the other for 422. The real difficulty is that, from what I've seen of the Sony protocol, it doesn't quite map 1-to-1 with the LDP protocol (which is completely covered in the V8000 manual). One big issue is that the frame code on a CAV LD can be assigned arbitrarily, to any number of consecutive fields (well, there's probably a limit, but many discs have them assigned per film frame, 3-2-3-2) so I can't just interpret the frame numbers into drop-frame timecode via a lookup table. Maybe the complete 9-pin protocol documentation will help sort things out.
Originally Posted by pkepneriv
Ok everyone what do you think would be better? I have a VSX-1019-AH currently. Would it be best to get a RF AC-3 modulator and connect it to my current receiver or should I get an older receiver that has THX, AC-3 input and all the bells and whistles? What would make for the best sound and video screnerio?
My preference would be to use an external demodulator or decoder. All kinds of things may fail on a receiver over time, such as power amplifier or control circuitry. If you use an outboard unit, you can change receivers, or possibly go on to "separates" in time. I currently have two Yamaha DDP-1 units, external processors which take in the AC-3 RF signal (as well as Dolby Digital via coaxial or optical SPDIF) & output 5.1-channel analog. One of these will work on any receiver which has analog multichannel inputs.
I'll probably be looking to sell one soon, as I have arranged to acquire a Pioneer unit which includes some other functions & a volume control. It doesn't handle dts, but I'm not likely to need that, so I could just use it directly with a power amp if my receiver gave up the ghost.