Sony VPH-G90U Product Sheet

Multiscan Projector

VPH-G90U/G90M

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MULTISCAN PROJECTOR

C

ontinuing to strive for
excellence in projectors, Sony

has developed the VPH-G90*
Multiscan Projector offering
uncompromising picture quality.
The Flagship Model in Sony’s
extensive range of CRT projectors,
the VPH-G90 combines extremely bright, precisely
focused images with ease of operation and
professional level of reliability.
Sony is a world leader in the advanced technologies
that are necessary to achieve projected images of
outstanding quality, as evidenced in the VPH-G90’s high
performance 9-inch electromagnetic CRTs and HACC
lenses. Accepting a wide range signal frequencies of
up to 135 MHz makes it possible to images from
sources that include conventional video, HDTV and
high frequency computer signals. In addition, the
advanced circuitry of the VPH-G90, including the
proprietary Sony Digital Reality Creation technology,
delivers high quality of image reproduction.
In professional applications, especially in multiple
projector ‘virtual reality’ and simulation applications,
the numerous features engineered into the VPH-G90
really prove their worth.
In large venue applications, the outstanding picture
performance of the VPH-G90 Multiscan Projector makes
it the only possible choice.

*The VPH-G90 is available in two different models: the VPH-G90U for

countries operating at 100-120 V and the VPH-G90M for 220-240 V AC.

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High Resolution, High Brightness and High Contrast

The VPH-G90 uses advanced technologies to provide bright
and high contrast images.
9-inch electromagnetic focus CRTs featuring ultra-fine
phosphors, low capacity electronic guns and new magnet
coils that allow a very small spot size, are the fundamental
factors for precise images. Hybrid HACC lenses contribute
to the projection of brighter and crisper images. Optical
Coupling technology means that images are reproduced in
high contrast.
Together with these mechanical technologies, Sony has also
taken advantage of many new electronic developments. A
135 MHz-wide RGB bandwidth enables the VPH-G90 to
handle high resolution computer signals. It also includes new

high-voltage
circuitry for
brightness and a
new video output
circuit for both
high resolution
and high
brightness.
In summary, the
VPH-G90 harnesses
the best available
technologies to
reproduce
extremely precise
and bright images
from a broad
range of sources.

Accurately Focused Images

To optimize picture focus, the VPH-G90 adopts built-in Axis
Quadrupole/Diagonal Quadrupole (AQP/DQP) technology as
well as another new development, Hexa Pole Adjustment.

In CRT projectors, beam distortion is likely to occur at the
screen edges, with a consequent distortion of the spot
shape. These technologies correct this beam distortion to
give clearer and more detailed images from corner to
corner of the screen.

Digital Reality Creation

Sony DRC (Digital
Reality Creation)
technology
generates pictures
which have four
times the
resolution of
conventional video
signals. Unlike
conventional linear
interpolation
which uses filtering
techniques, DRC
generates a high
resolution signal by
referring to
memorized
waveform patterns.
The VPH-G90 uses DRC to project
higher density pictures in which details
of the objects are enhanced.

3-dimensional Comb Filter and 3-line Filter

The VPH-G90 incorporates two kinds of electronic filtering
technologies to separete the luminance signal and the
chrominance signal. The 3-line Filter combines the data of
three neighboring lines from the original signal to generate
each interpolated line. For NTSC video reproduction, the
3-dimensional Comb Filter provides separation of luminance
and chrominance signals referring not only the lines but also
continuance fields. These filtering technologies reduce dot
interference and cross color.

Picture Orbiting/Scan Line Shift Function

Similar to the ‘screen saver’ function for computer monitors,
the Sony Picture Orbiting Function and Scan Line Shift
Function reduce the risk of CRT burn in projectors. CRT
burn is caused by prolonged image projection. For still
images, the Picture Orbiting Function rotates the projected
image at intervals that can not be detected by the human
eye. Similarly, the Scan Line Shift Function, continuously
shifts the sacn lines of the image to avoid CRT burn with
video images.

Power Saving Mode

Power consumption is reduced when the power saving
mode of the VPH-G90 is set to on. When the projector
detects that there has been no input signal for 10 minutes,
it automatically enters power saving mode.

The projector quickly resumes full operation as soon as an
input signal is detected or any operational key is pressed.

Multi-language On-screen Menu

The multi-language on-screen menu is provided to simplify

operations. The
on-screen menus
can be displayed in
any one of seven
languages: English,
French, German,
Italian, Spanish,
Japanese and
Chinese.

SYSTEM EXPANDABILITY AND VERSATILITY

SUPERB PICTURE QUALITY

CONVENIENT OPERATING FEATURES

9-inch electromagnetic focus CRT

DRC board

On-Screen Menu

Comprehensive Input Connections

The VPH-G90 has connections for RGB Component
(Y/R-Y/B-Y), HDTV*, Y/C and composite video input signals.
It also has two slots for optional interface boards from the
Sony IFB Series. By connecting an optional Sony Signal

Interface Switcher PC-3000 fitted with appropriate IFB
Series boards, several inputs can be connected
simultaneously.

* The VPH-G90 supports 1125/60/2:1 and 1125/59.94/2:1 (SMPTE-240M/

274M) HDTV systems.

PICTURE

VIDEO MEMORY:

CTRL

No . 10

SET

SETTING1

CONTRAST

SET

BR IGHT

SETTING2

COLOR

INPUT

HUE

INFO

SHARP

SEL: SEL: / EXIT:ENTER MENU

PNUIT-A

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