dept of cse
Smart quillSmart quill
y 2) WORKING
y 3) FEATURES
y 4) APPLICATIONS
y 7) CONCLUSION
y 8) REFERENCE
y Smart quill was invented by Lyndsey Williams of Cambridge
University along with British Telecommunications.
y Smart quill is a pen, which remembers the words that writes and
then transfer them into computer text.
y Smart quill contains sensors that records movement by using by
using earth¶s gravity irrespective of the platform used
y Smart quill works by measuring the pen¶s movements and
matching them to the movements that produce the words and
letters programmed into its memory.
y User can enter information into these pens by simply pressing a
button and accelerometers are used to sense the movements of
the pen using earths gravity system
The text written can be read on a tiny screen on the
side of the pen and it has a light at its tip which allow
the user to use it even dark
HANDWRITING RECOGNITION AND
y User can train the pen to recognize particular handwriting
y If someone else picks your Smart Quill and tries to write with
it- it won¶t
HANDWRITING RECOGNITION AND
There are two techniques used for this purpose
Handwriting recognition Software
y This technology uses a device called Accelerometer which is
used for measuring motion
y A tiny accelerometer in a pen could be used to detect the stops
and starts, arcs and loops of handwriting, and transmit this
information to a small microprocessor that would make sense
of it as text.
y Two types of accelerometer
1)Two axes accelerometer:- measures acceleration in two axes.
2)Three axes accelerometer:-measures acceleration in three
axes. ex..tronics +/-2g
HANDWRITING RECOGNITION SOFTWARE
y This software embedded in the microprocessor of the pen is
used to recognize handwriting of the user.
y Two phases in handwriting recognition
y In this phase, the recorded acceleration signals are then
transcripted to it¶s original form.
y Firstly, we have to know pen¶s spatial orientation.
y Secondly, we have to succeed in the double integration.
Fig. represents the acceleration signals recordedFig. represents the acceleration signals recorded
while one is writing a small capital Bwhile one is writing a small capital B
y In this phase the characters and signatures are recognized.
y We use a simple Euclidian distance as the
comparison process, and of course the decision
process is the smaller distance found
In Fig , we can see the accelerometers signals recordedIn Fig , we can see the accelerometers signals recorded
during Yanis signing processduring Yanis signing process
DISPLAY SCROLLS USING TILT SENSORS
y By tilting the pen user can chose applications and
scroll through without using scroll buttons
y This is done by using Micro Electro-Mechanical
Systems(MEMS) tilt sensors to measure tilt angle with
COMMUNICATION WITH OTHER DEVICES
y The current prototype hooks up to the PC via a cable and
electronic docking station called as ³inkwell ³
y Future models can receive email and pager messages via
a wireless messaging system.
y It uses 4MB EEPROM .
y Up to 10 pages of notes can be stored locally on the pen
y The data is stored in the pen locally until it is copied to the
y Smart quill works on AAA(Antiaircraft Artillery Battery)
battery. It can continuously work 25 hrs with a single AAA
y The pen has automatic on/off system.
y ǲSpatial sensing systemǳ
y Intuitive user interface
y 3D mouse
y Power saving
y Smart quill is all mobile
y It has accelerometer errors.
y It is inconvenient for persons with handtremors.
y Bigger size than a normal pen.
y Errors are introduced in the system due to thermal
variations in the spring
1. Replace keyboard with SmartQuill
2. Input to other devices
3. Handheld computer applications
4. The wireless messaging system which allows two way
5. Supports speech recognition.
6. Third party to add on applications
y The estimated cost of this futuristic pen is only $100.
y SmartQuill is convenient for use.
y Keyboards become so tiny you require needle-like fingers
to operate them and screens that need constant cursor
controls to read simple text. The introduction of
SmartQuill is the best solution for this
y R.Baron, R. Plamondon, ³Acceleration measurement with an
instrumented for sign verificationand handwriting analysis´ , IEEE
Trans .Vol IM-38
y E.Millien, C.Roux, ³Users input to design of a ³communicating pen´,
Smart Objects Conference, 2003