Denon dvd-3800 产品宣传册

N E W   M O D E L   I N F O R M A T I O N

The DVD-3800 is endowed with PureProgressive

TM

technology to unleash the full impact of DVD-Video picture

quality. The DVD-3800 also uses a 12-bit, 108-MHz video D/A converter to faithfully preserve the delicate low-level

signals often lost during D/A conversion. With these advanced video image technologies, the DVD-3800 will reproduce

with the highest resolution, DVD images on Progressive-compliant monitors and projectors. For sound, it is Denon's

high-end AL24 Processing Plus, high quality audio D/A conversion, HDCD decoding, and Digital Bass Management

that will bring out the best of not only DVD-Audio discs, but your entire CD collection as well.

■

The DVD-3800's interlace to progressive converter is the new SiI504
Converter with PureProgressive

TM

circuitry from Silicon Image. The SiI504

features faster moving picture detection and improved film/video mode
recognition capability.

High-speed processing: This Sil504 Progressive Converter is capable

of processing 6 billion operations per second, providing the finest in
motion-adaptive de-interlacing.

Moving picture detection: PureProgressive

TM

features 2:3 pulldown

detection, which converts 24-fps Film based material to 60-fps TV/Video
playback, while also detecting Video based material, animation and graphics.
PureProgressive

TM

is capable of reproducing DVD-Video discs containing

both Film and Video material, as well as high picture quality progressive
video sources, while avoiding the flickering caused by detection delays of
these different formats. In processing moving video signals, a conventional
progressive converter performs detection on a full frame-by-frame basis,
while PureProgressive

TM

stores 4 fields of video signals in a 64-Mbit

SDRAM buffer, enabling the detection and processing on a pixel-by-pixel
basis to achieve greater precision in discriminating between moving and
still pictures.

Improved 2:3 pulldown detection: There are cases in which 2:3 pull-

down data signals on DVD-Video discs are not in sync. 
The PureProgressive

TM

converter will quickly detect the non-sequential

points and perform appropriate corrective measures at high speed to minimize
picture flickering.

It is now also possible to select Level Detection or Flag Detection as

the detection method used for Film and Video material. If an incorrect flag
was recorded or the difference between the video level and noise level is
very small and distinctions on the disc are difficult to detect, this selection
ensures optimum detection capability and minimizes picture quality degradation.

■

An extremely high-speed video D/A converter is a critical component in
superior quality digital video playback. The DVD-3800 therefore uses a 12-bit,
108-MHz video D/A converter to ensure highly accurate playback of deli-
cate, low-level video signals and give you a vivid picture that is faithful in
every detail. Oversampling of 4x is used for both Progressive and
Interlaced video signals, allowing more detailed D/A conversion. Higher
quality picture reproduction is also possible thanks to a filter with flexible
shutout characteristics that is used for the analog filter in the latter stage.
Furthermore, the DVD-3800 uses two separate video D/A converters to
process Progressive and Interlaced signals. This eliminates mutual
interference between the Progressive and Interlaced signals.

■

The NSV feature works in the digital domain to reduce noise in the video signal
frequency band in order to enhance video signal linearity.

■

The S/N ratio can be improved when unwanted signals of higher than
6.75 MHz following D/A conversion are cut. The DVD-3800 thus uses a
Super Sub Alias Filter that produces flat characteristics, ensuring that
adverse influences do not affect video signals inside the essential frequency
band, and folding noise is eliminated. In the DVD-3800, the Super Sub
Alias Filter is applied to the chroma signal as well as the luminance signal,
improving color reproduction.

■

DVD-3800 can pass below black video (PLUGE) via the progressive or
interlace video outputs for correct monitor setup and optimum picture quality.

■

Contrast, Brightness, Hue, Sharpness, and Gamma can be adjusted as
desired by the user.

■

Denon has further developed its proprietary AL24 Processing, an analog
waveform reproduction technology, to support the 192-kHz sampling frequency
of DVD-Audio. This new technology, AL24 Processing Plus, thoroughly 
suppresses quantization noise associated with D/A conversion of LPCM
signals to reproduce the low-level signals with optimum clarity that will
bring out all the delicate nuances of the music.

■

The DVD-3800 uses a 24-bit, 192-kHz audio D/A converter that is well
protected from noise caused by fluctuations in current from the power supply.
Since the level of quantization noise within the frequency range is uniform for
all frequencies, this D/A converter ensures that all the sound you hear is
as clear and noise-free as possible.