Sony DVP-NS999ES User Manual
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ES Series DVD-Video/CD/SA-CD Players; Version 3.0
Page 34
Sony's Bulk Molding Compound (BMC) is remarkably anti-resonant.
And the honeycomb structure of Sony's mechanical deck floor is
extensively cross-braced, reducing resonance further still!
Precision Drive™ 2 system (all models)
The disc condition can have a major effect on proper readout. Ideally, the
disc should be flat, centered and free of dust, dirt and scratches. In the real
world, no disc is perfect. Slight imperfection in the location of the center hole
requires the player to follow a wobble in the track once per rotation. Tilt in the
disc surface requires similar, constant adjustment. There are also unavoidable
micron-level imperfections, including everyday scratches too small to be seen by
the naked eye. Compared to CD, DVD-Video and Super Audio CD use a smaller
pit size and shorter laser wavelength that place even greater urgency on
accurate tracking. Sony meets these challenges with the Precision Drive 2
system. Sony's system incorporates several advances.
Dynamic Tilt Compensation enables the lens to tilt with each undulation of
the disc. It operates by applying highly responsive servo tilt to the pickup.
This results in excellent stability for superior readout of warped or eccentric
discs.
Focus Bias Adjustment delivers accurate readout from scratched or dirty
discs.
Sony's High-speed Stepping Motor provides fast, silent access to DVD
chapters and CD tracks.
Responsive Servo DSP shortens the wait from the time you insert a disc
until playback begins.
In the real world, no optical disc is perfectly flat and centered. But with
Sony's Precision Drive 2 system, it certainly seems that way.