FORM 2

T H E PATENTS ACT, 19
[39 OF 19701

COMPLETE SPECIFICATION

[SEE SECTION 10 & RULE 131

1 TITLE
Use of Conventional Two Dimensional High Definition Display and Ordinary Projector with An Auto Calibrated Active Shutter Glass Device To View Three dimensional Stereographic Images of a Multimedia Content

2 APPLICANT

NAME Valuable Innovations Private Limited,

ADDRESS 602, CENTRE POINT, 3. B. NAGAR,
ANDHER1- KURLA ROAD,
ANDHERI (E), MUMBAI - 400059.
INDIA

NATIONALITY INDIAN

The following specification particularly describes the nature of the invention and the manner in which it is to be performed:

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Introduction

Given the advances in the imaging technology, signal processing,
broadcasting, security and IT tools Digital cinema is providing high ROI
for producers as well as other stake holder of the film industry.
However, the demand of observing multimedia content with objects and
characters appearing as life size is rising. Owing to the new materials
based smart sensors watching of the available two dimension content into
a three dimensional format has become a pocket friendly and thrilling
experience.

Existing Technology

Live Stereoscopic capture, Non linear editing, Computer graphics
renderings, Smart Projection Technologies have lead to generation of
visually stunning images. It has open floodgates to en-cash the
transformation of box office hit 2 D movies of past into a 3D blockbusters
with mesmerizing effect.
Anaglyph images are used to provide a stereoscopic 3D effect, when
viewed with 2 color glasses viz. each lens has a chromatically opposite
color, usually red and cyan). Images have two color layers, superimposed, but they are offset with respect to each other to produce a depth effect. Mostly the main subject is in the center, while the foreground and background are shifted laterally in opposite directions. The picture contains two differently filtered colored images, one for each eye. When viewed through the "color coded" "anaglyph glasses", they reveal an integrated stereoscopic image.
The three-dimensional depth information can be reconstructed from two
images using a computer by corresponding the pixels in the left and right
images
The visual cortex of the brain equivalent to signal processing computer
fuses this into perception of a three dimensional scene or composition.

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Numerous add-on kits and eye wear for 3-D viewing are now available. These can be classified by the technique:
a) polarization, b) spectral division, and c) shutter glasses.
While all three techniques can be used with Cinema projectors, only polarization and spectral division work with dual-projection systems.

Limitations of the Existing solution

To view the content in 3D format, the viewers needs customized
infrastructure. However this mandatory infrastructure is associated with its intrinsic limitations.
• The existing active shutter glasses are expensive and needs
calibration from projector to projector and screen to screen.
• The headgear guzzles power and needs to be electrically charged
periodically
• The images lack in resolution, contrast and are poor in quality.
• Silver screen for projection is a must.
• Lack ergonomics in design, heavy due to battery.
• Poor impact, anti-scratch resistance
• It needs maintainenance for disinfection etc.

Inventors Solution

Unlike conventional methods which use three main techniques to provide
auto-stereoscopic vision i.e. parallax barrier, lenticular lens, head /eye
tracking to view a 3D content, the inventors have come out with a simple to install and maintainenance free, contagious disease free, unique, scalable, robust headgear to view the three dimensional content.

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Methodology

A spectator need to mount the state of art device with embedded active
glasses on his/her forehead. The binocular depth perception effect is
achieved with the help of these high frequency operated active shutter
glasses. The unique design of this special headgear prevents possibility of
spread of contact based infections, nausea or experiences of a headache.
The two dimensional content images displayed on the conventional high
definition television display through set top box or images displayed on
the screen of projector of a movie theatre are in-house generated at
predefined fixed frame rate.
Each image comprises of left and right frames. They are further sub
divided into multiple number of odd left and even right frame fields. With
an aid of ordinary projector the magnified image of these frames is
viewed by the auto-calibrated shutter glass headgear. The headgear is
designed in such a way that left and right frames are projected on the respective eyes at the same frame rate of projector or television display. The blacking out of the frames on respective eyes is achieved with the active shutter glass mechanism.
Two different images are revealed to each eye. The human brain without
any strain synthesizes the two images into a generally convincing notion
of depth. Speedy depolarization of the integrated images of these two
sources takes place due to extremely high shutter speed of this state of
the art headgear. This speed is synchronized with the speed of projector
device e.g. combined frame rate of e.g. 100 plus is obtained which leads
to seamless generation of flicker free image with constant brightness and
uniform contrast.
Active shutter glass switching frequency is synchronized once with precalibrated desired frame rate of projector or television display device through any communication device. Thus it makes it agnostic to the playing and viewing device.

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Any change in the projecting device or image will automatically synchronize the shutter speed of headgear (by wireless connectivity with central server) without sacrificing the quality of the image percepted by the viewer's brain,
The unique flip button provision on the headgear enables it to toggle the left image on right eye and vice versa if needed.
The overall system contains a standardized hardware synchronization
device in the vicinity of two dimensional media display or movie screen,
ordinary projector, headgear and viewer. This device helps the headgear
sensor to synchronies the active shutter glass frame rate with that of the
high definition two dimensional content being displayed on any of the
conventional source as cited above. The seamless synchronization is
achieved by duplex wireless communication involving receiving and
transmission of frame rate of displayed/projected content and speed of
shutter glass data. The device thus calibrates the headgear and leads to
generation of a three dimensional image

Schematic Flow of Process
Figure -1 describes the seamless integration of various entities associated
while watching a stereographic media - two dimensional image display
device, ordinary projection device, projection screen, proprietary head gear with toggle switch and wireless connector and viewer.
Figure 2A is a diagram of the Head Gear
Figure 2B is a diagram highlighting the parts of the Head Gear
Figure 2C is a diagram containing the design of the buttons on the Head
gear
Figure 3A & 3 B contains the diagram of the infrared sensor
Figure 4 describes the infrared sensor

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Detailed Description of the Preferred Embodiments

Figure 1 shows the tabular description of the article / entities associated with watching a stereographic media.

Figure 2A shows the head gear device for watching the stereographic
media

Figure 2B shows the main parts of the head gear and figure 2C the button
design. The head gear consists of a spectacle like device comprising of
two handles and buttons on each of the joint of the handle with the front
frame and Active shutter glasss encompassed within the front frame.

Figure 3 A& 3B shows the infra red sensor

Figure 4 shows the diagramatic view of the sensor
In the present invention the viewer wears the head gear which initially
needs to be synchronised with the media to be viewed. The
synchronisation is done once with pre-calibrated desired frame rate of
projector or television display device through any communication device.

The shutter glasses in the head gear consists of high frequency operated active shutter glasses and buttons on both the sides of the head device as indicated. Such buttons essentially for the purpose of toggling the left image on right eye and vice versa.

Salient features of Invention

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(1). State of the art headgear is an auto calibrated device
independent of choice of projector and image displaying
media.
(2). It functions even on the cost existing two dimensional multi-
media display device, normal projector to generate a three dimensional image in most economical way.
(3). Flip button provision on headgear enables it toggles left image
on right eye and vice versa if needed.
(4). Unlike the existing linear polarization based watching of 3d
content, inventor's technique gives viewers freedom to tilt
their head and look about the theater/room naturally with no
loss of 3D perception and brightness.
(5). Moreover, the exhibitors can operate with an existing
projector unlike two projector combinations which is a basic need of most of the exiting 3d cinema infrastructure.
(6). The unique engineering modular design, material - optics,
auto sterilizing, ergonomic of the proprietary headgear gives
comforts to view the seamlessly generated stereoscopic
images.
Moreover, advantage is economical and secured, distribution
of synthetically generated 3 0 content through low bandwidth
infrastructure avoiding the capturing and transmission of the
terabyte based media files leading to choking of bandwidth.
The 3D technology performs at high frames (>40) per second
per eye (total > 100 FPS). This high video frame rate
eliminates flicker, offers exceptional color fidelity and imparts superior picture depth which otherwise lacks in existing stereographic display systems.
It almost matches the organic/natural co-ordination and high
resolution of the image captured by left and right eye in real
life viewing.

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(10). One can event watch the 3d content from a high end
television to LCD, TFr, Plasma Monitors, High resolution
handset etc.
(11). One can use them even while traveling and viewing
multimedia content on touch screen or entertainment displays in auto/aviation industry, exhibitions etc.
(12). No loss of brightness due to absence of any filters at all
stages.
(13). Existing storage devices can be use for pre-or-post recorded
version.
(14). It supports all the internationally followed standards of
television broadcast thus enhancing effects of true home
theatre.
(15). It gives unprecedented freedom of expression to the viewers
which otherwise was not feasible.
(16). Extended application in health and education sector viz.
architect can showcase designs in stereoscopic 3D, professors
can show stereoscopic 3D models of ancient cities, and
models of the human body, complex engineering design, and
corporate presentations can be done in stereoscopic 3D
offering a simple, low cost, high-quality stereoscopic 3D for
the masses

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We claim

1 a combination of a standardized hardware synchronization device in
the vicinity of two dimensional media display or movie screen,
ordinary projector, headgear and viewer for generation of 3
dimensional sterographic images.

2 a headgear device as in claim 1 comprising of of a spectacle like
device having two handles and 2 buttons on each of the joint of the handle with the front frame and Active shutter glasses encompassed within the front frame

3 A Flip button provision on the device as in claim 2 enabling toggling
of left image on right eye and vice versa if needed.

4 Synchronsable shutter glasses on the head gear as in claims 1 - 2
above.