18
DVD Technical Notes
For further protection, the mechanical deck is insulated from the
DVP-S9000ES main chassis via dedicated supports.
A new Digital Signal Processor (DSP) handles 40 million
instructions per second (40 MIPS). The result is highly precise
control of the optical pickup, for supremely accurate readout of
the high-density DVD and SACD signal surface. The new DSP
also helps deliver superb high-speed search and special effects
playback. And it helps reduce the duration from disc insertion to
the start of playback.
This digital controller must speak to such analog devices as the
disc drive motor, tilt motor, and thread motor. For this purpose,
the system uses 20 MHz Sigma Delta modulation and a highly
linear 1-bit D/A converter. The result is 10-bit accuracy in the
motor control output voltages.
The base unit is mounted on a subchassis called the mechanical
deck. On the DVP-S9000ES, this is a self-contained box formed
of Sony’s Bulk Molding Compound (BMC). Long a fixture in
Sony anti-resonant design,
BMC is carefully
formulated for high strength
and high internal loss. Like
steel, it has the rigidity
required for its structural
purpose. But unlike steel,
BMC steadfastly resists
vibration and resonance.
BMC consists of calcium
carbonate — a principal
component of marble — glass
fiber reinforcement and
unsaturated polyester. The
material is subjected to
thermosetting and is formed into the mechanical deck floor, walls
and ceiling. Even the disc loading tray is made of non-resonant
BMC.
Mechanical Deck Insulators
High-Speed, High-Precision Servo DSP
Thoughtful touches and operating refinements make the
DVP-S9000ES a pleasure even before playback begins.
• Thick aluminum front panel. The DVP-S9000ES has serious,
down-to-business styling with a thick, uncluttered aluminum
front panel. The fluorescent display window is made of high
hardness acrylic resin, especially formulated to resist scratches.
• Short stroke controls. Front-panel buttons are designed to
respond to the lightest finger contact. Audio feedback in the
form of a defeatable beep tone confirms each command.
• LED/fluorescent display dimmer. To minimize distraction
during movie playback, the front panel fluorescent display can
be dimmed. When you dim the display, the player
simultaneously dims the front panel LEDs.
• Control Menu. With DVD-Video, SACD and CD playback
in a single chassis, the DVP-S9000ES is brimming with control
options and configuration possibilities. Sony organizes all the
options for maximum clarity and presents them on your
television screen.
• Luminescent remote control. Because owners will be
enjoying DVDs with the room lights turned down, the remote
control features glow-in-the-dark keys for Play, Stop, Pause
and Display.
• Sound feedback. Beep tones confirm your selections for both
front-panel and remote control commands. If you prefer, the
audio feedback can be deactivated.
• Picture Memory. Similar to the customizable desktop picture
on a PC, the DVP-S9000ES can display different scenes in the
Stop mode. These can include favorite video scenes stored in
memory, along with jacket pictures from CD Extra discs as
well as DVDs.
• Bit Rate Display. Users can track the variable bit rate of
MPEG-2 compression with on-screen displays of video and
audio bit rates.
• Layer and Pickup Display. The DVP-S9000ES can show an
on-screen graphic representation of your current position on
the disc, along with your current layer for dual-layer discs.
• Custom Parental Controls. You can password protect the
viewing of up to 300 DVDs, restricting playback to PG
versions (on compatible discs) or preventing playback
altogether.
• DVD, SACD and CD TEXT
TM
display. The DVP-S9000ES
provides scrolling front panel display for the text functions of
compatible discs.
• Enviromentally friendly. To conserve energy, power,
consumption in the Standby mode is less than 1 watt.
Operation automatically shuts down 30 minutes after Stop.
To reduce pollution, the printed circuit boards are halogen-free.
Performance Meets Refinement
Construction/
Conveniences
BMC Mechanical Deck
Fig. 22: The drive system uses an uncommonly powerful 40 MIPS DSP,
combined with an uncommonly accurate Delta Sigma 1-bit D/A converter.
Fig. 21: The mechanical deck is a sealed
enclosure, shown here with drawer open & closed
