Re: Sony HDL-2000 Hi-Vision Info
What do you want to know? I have a certain amount of technical information on this type unit.
To answer what seems to be your principal question, you
can not play standard LaserVision discs on an HDVS videodisc deck. With a MUSE player, it is possible to incorporate NTSC signal-processing circuitry because the parameters of the system, other than the signal, are fundamentally similar to standard LaserDisc {see
this thread of mine for some details}. This is
not the case for the HDL series, which use a fundamentally different recording system.
To be more specific, in order to hold the rotational speed of the HDVS disc down to 1800 RPM [CAV], Sony recorded the signal on two parallel tracks. This means that, instead of data being read by the central spot of the three-beam pickup system, as in LaserDisc players, where the tracking is taken from the two side spots, which are thrown to left and right of the pit-track onto the land areas, the signal is taken from the peripheral spots and the tracking from the land between them. While the pickup is actually based on a standard LD pickup, the differences are such that it cannot play a single-channel disc, be it NTSC, MUSE, or PAL.
Why do you ask? Have you come into possession of one of these monsters?
