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| Description |
The
Virtual Laser Keyboard (VKB) leverages the power of laser and infrared
technology and projects a full-size keyboard onto any flat
surface. As you type on the laser projection, detection technology
based on optical recognition enables the user to tap the images
of the keys, complete with realistic tapping sounds, which
feed into the compatible Bluetooth-enabled PDA, Smartphone,
laptop or PC.
Unlike many small snap-on keyboards for PDAs, the Virtual
Laser Keyboard provides a full-size QWERTY keyboard. It is
also smaller and more convenient to use than the folding-type
keyboards made by some manufacturers and similar to them in
functionality. There are no mechanical moving parts whatsoever
in the Virtual Laser Keyboard. It provides a projected image
that is the perfect portable input device for PDAs. It's similar
in responsiveness to regular keyboards.
The light weight device weighs two ounces and is similar in
size to a disposable cigarette lighter. The Virtual Laser
Keyboard includes a self-contained, rechargeable lithium ion
battery. It provides the Virtual Laser Keyboard with its own
internal power supply, so it doesn't drain any battery power
from the PDA or PC. The battery lasts two to three hours,
more than enough time to do some instant messaging and SMS
messaging from the handheld device or to update calendar and
phone book entries.
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| Technology
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Step 1: Template creation (Projection Module)
A template of the desired interface is projected onto the
adjacent interface surface. The template is produced by illuminating
a specially designed, highly efficient holographic optical
element with a red diode laser. Note: the template serves
only as a reference for the user and is not involved in the
detection process. In a fixed environment, the template can
just as easily be printed onto the interface surface.
Step 2: Reference plane illumination
(Micro-illumination ModuleTM)
An infra-red plane of light is generated just above, and parallel
to, the interface surface. This light is invisible to the
user and hovers a few millimeters above the surface. When
the user touches a key position on the interface surface light
is reflected from this plane in the vicinity of the key and
directed towards the sensor module.
Step 3: Map reflection coordinates (Sensor Module)
Reflected light from user interactions with the interface
surface is passed through an infra-red filter and imaged on
to a CMOS image sensor in the sensor module. Custom hardware
embedded in the sensor chip (the Virtual Interface Processing
CoreTM) then makes a real-time determination of the location
of the reflected light. The processing core can track multiple
reflection events simultaneously and can thus support both
multiple keystrokes and overlapping cursor control inputs.
Step 4: Interpretation and communication (Sensor Module)
The micro-controller in the sensor module receives the positional
information corresponding to the light flashes from the sensor
processing core, interprets the events (e.g. keydown, keyup,
mouse or touchpad control etc..) and communicates them through
an appropriate interface to external devices.
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| Product Specifications
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| Keyboard Projection
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| Light source
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Red diode laser
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| Keyboard layout
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63 key / full sized QWERTY layout
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| Keyboard size
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295 x 95mm projected keyboard size
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| Keyboard position
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60mm from VKB unit
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| Required Projection surface
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Non-reflective, opaque flat surface
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| Visibility
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Good contrast up to 600 lux ambient illumination
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| Keyboard Sensor
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| Ambient illumination
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Works under all standard indoor illuminations up to 600 lux
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| Detection
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Rate Up to 400 characters per minute
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| Detection algorithm
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Multiple keystroke support
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| Effective keystroke
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Approximately 2mm
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| Operating surface
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Non-reflective, opaque flat surface
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| Visibility |
Any firm flat surface with no protrusions greater than 1mm |
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| Bluetooth
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| Bluetooth Spec
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Bluetooth v1.1 class 2
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| Bluetooth Profile Supported
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HID and SPP
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| Range of Frequency
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2.4 GHz Spectrum
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| Transmission range
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9m
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| Number of supported passkeys
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5
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| Electrical
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| Power Source
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Integrade, 3.6V rechargeable lithium-ion battery
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| Battery Capacity
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>120 minutes continuous typing
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| Charge Method
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Included 100-240V AC Wall Adapter
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| Dimensions
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Approximately 35 x 92 x 25mm (1.38" x 3.6" x 1")
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Golan Technology
VKB Distributor in U.S. and Canada
Tel: 1.800.339.0724
Fax: 408.830.1158
Contact: info@golan-tech.com
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