Whats the deal with Macrovision?
Macrovision is an analog copy protection system which relies on illegal (overvoltage) synch pulses in a non-visible part of the picture to confuse the video auto gain control in VHS vcrs and prevent them from recording video signals properly. Unfortunately, many projectors are especially sensitive to synch pulse levels, and can not display a stable image if Macrovision is present. (I suspect that this may have something to do with the reported occasional incompatability of the LP350 with certain line doublers, which may include the Macrovision signal in the RGB output, thereby preventing the projector from synching to the signal – can anyone with an iScan and an LP350 please test and either confirm or refute this hypothesis?) Macrovision is on many prerecorded videotapes, and will be output from any DVD player if the DVD you are playing tells the player to output it. If Macrovision is affecting your projector, causing it to periodicly lose synch when DVDs and or videotapes are played,
