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Switch-A-View
Xerox researchers have developed a novel color printing technology that allows
multiple images to be combined in a single hard copy print, yet allows users to
view the images one image at a time by exposing it to a specific color of
light. It is the first time that alternating detailed pictorial images have
been displayed by controlling the light. Called “Switch-A-View” printing, the
Illuminant Multiplexed Imaging technology allows multiple pictures to be
embedded in printed objects. The technology grew out of the company’s extensive
investigations in color, which account for nearly 40 percent of the Xerox
research budget.
Technology Description
The Switch-A-View technology exploits the manner in which human color
perception adapts in the presence of narrow-band light sources with a collage
of overlapping images. The result: two entirely separate — and quite detailed —
images can be printed on a single piece of paper, but only one of them will be
seen under blue light, for example, and the other will be seen only under red
light. It’s a more sophisticated version of the children’s trick of using
colored cellophane to reveal the “secret message.” Different effects can be
created with the hidden images, including simple animation and changing or
disappearing images.
The patent-pending technique depends on specialized color management software
and and a calibrated color printer. Viewing of the individual images is
accomplished by switching back and forth between narrow-band light sources,
such as colored LED’s, or a single color displayed on a monitor.
Normally, color images are produced by varying the amounts of cyan, magenta and
yellow to control the color. With Switch-A-View, the cyan, magenta, and yellow
colorants are used to absorb the red, green, and blue lights, respectively.
The Switch-A-View technology is a form of extended imaging, or hyper imaging,
where more information and value is contained in an image than is immediately
apparent upon initial viewing. The sudden change in the perceived image with a
change in illumination has a significant visual impact that is useful for
drawing the observer’s attention and providing amusement. The use of
multiplexed imaging does require control over the illumination under which
prints are viewed. Environments that are naturally dark and have controlled
artificial lighting, therefore, offer natural venues for the use of
Switch-A-View imaging.
Applications
- Advertising - packaging, apparel, film
- Entertainment - movie theatres, night clubs, books, posters, trading cards,
novelty imaging
- Security and Authentication - encoded coupons and tickets, counterfeit
protection
- Color Science Education
Intellectual Property Summary
Xerox is investigating an array of ‘hidden imagery’ technology to enable today’
s documents to communicate in more sophisticated ways or offer new levels of
security. These technologies include Glossmark™ printing and Correlation Marks,
in addition to Swith-A-View.
For your convenience and review, we have provided a sample of selected patents
from our portfolio.
| U.S.
7379588 |
Systems for spectral
multiplexing of source images to provide a composite image, for rendering the
composite image, and for spectral demultiplexing the composite image to obtain
a normalized color image |
| U.S. 7269297 |
Illuminant-neutral gray component
replacement in systems for spectral multiplexing of source images to provide a
composite image, for rendering the composite image, and for spectral
demultiplexing of the composite image |
| U.S.
7230738 |
System for spectral
multiplexing of source image to provide a composite image with noise encoding
to increase image confusion in the composite image, for rendering the composite
image, and for spectral demultiplexing of the composite image |
| U.S. 7155068 |
Systems for spectral multiplexing
of source images to provide a composite image, for rendering the composite
image, and for spectral demultiplexing the composite image, which achieve
increased dynamic range in a recovered source image |
| U.S.
7376264 |
Systems for spectral
multiplexing of a source image and a background image to provide a composite
image, for rendering the composite image, and for spectral demultiplexing of
the composite images |
| U.S. 7215792 |
Systems for spectral multiplexing
of source images to provide a composite image with gray component replacement,
for rendering the composite image, and for spectral demultiplexing of the
composite image |
| U.S.
7127112 |
Systems for spectral
multiplexing of source images to provide a composite image, for rendering the
composite image, and for spectral demultiplexing of the composite image by use
of an image capture device |
| U.S. 7218785 |
Systems for spectral multiplexing
of source images to provide a composite image, for rendering the composite
image, and for spectral demultiplexing of the composite image |
| U.S.
7130488 |
Systems for spectral
multiplexing of source images including a textured source image to provide a
composite image, for rendering the composite image, and for spectral
demultiplexing of the composite image |
| U.S. 7136522 |
Systems for spectral multiplexing
of source images to provide a composite image, for rendering the composite
image, and for spectral demultiplexing of the composite image to animate
recovered source images |
For Licensing Information
To learn more about licensing the Switch-A-View technology.
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United States
