Open Telecom, Inc.Open Telecom, Inc.

Open Telecom, Inc.

(Freelz Wheelchair Controller)

October, 2008

WELCOME!

Open Telecom, Inc.Open Telecom, Inc.

11

Teeth-clenching data acquisition system & power wheelchair control

Teeth-clenching data acquisition system & power wheelchair control

Original Technology developed by Korean instituteCommercializing & upgrade by Open TelecomMarketing by Open Telecom (www.open-telecom.com)

Original Technology developed by Korean instituteCommercializing & upgrade by Open TelecomMarketing by Open Telecom (www.open-telecom.com)

IT integrated power wheelchair

Open Telecom, Inc.Open Telecom, Inc.

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Contents----------------------------------------------

1. Technology overview

2. Comparison with the others

3. Technology

4. EMG-Power wheelchair

5. EMG-Tetris game

6. Market

Open Telecom, Inc.Open Telecom, Inc.

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1. Technology overview

○ Utilizing EMG signals from teeth-clenching, users are able

to operate computers, electronic devices and power

wheelchairs. (EMG:bioelectric signal generated by muscle

use)

○ Using this technology, commercial products can be

developed for the various applications.

○ Short-term Target products :

Wireless control power wheelchairs, PW control modules,

User training games

○ Long-term Target products :

Games, information input devices, computers

Open Telecom, Inc.Open Telecom, Inc.

442. Handicapped in the spinal cord

○ The spinal cord : Located in spine. Between the cervical vertebrae 1

and the lumbar 1, 2. Major data path between brain and body.

○ Heavily handicapped in spinal cord : The spinal cord in no.4 or no.5

of the cervical vertebrae is damaged, and can’t use both legs and

hands

===

○ Very limited to do rehabilitation

○ Required to have indirect control of mobility aids or IT devices

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3. Comparison with the others

Power wheelchair control using breath : Breath is not related

with power wheelchair directly. Taking long time to use it.

Our technology is using the movement of teeth and

chin(teeth-clenching), and it gives direct control to the

moving direction of power wheelchair. In addition,

supporter can control power wheelchair for the user within

some distance.

Open Telecom, Inc.Open Telecom, Inc.

3.1 Existing product

Input Devices

Who hasn't wished for more freedom? Our input

devices let you control your wheelchair just as

you like, making you independent and mobile

again.

Suck and blow controlThe wheelchair remains directly steerable; due to the continued mode, a signal is only required for a necessary change of direction.Chin controlThe complete chin control can be moved behind the seat by means of a swivel arm; swiveling, On/Off and MODE are activated by means of a separate multifunction switchFoot controlCan be used in 3-switch or 5-switch mode; the continued mode makes control of the wheelchair easier for the user; all functions can be activated.5-button keyboard controlLarge-surface touch sensors for MODE and driving direction as 5-switch mode.Buddy ButtonFreely positionable function/driving keys for entering driving signals and/or menu navigation.Calibratable mini joystickCalibration can be activated at any time by the user; self-control by means of force vectors and movement vectors display on the LCD.

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Open Telecom, Inc.Open Telecom, Inc.

3.2 Practice of suck & blow (Sip & puff)

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Open Telecom, Inc.Open Telecom, Inc.

3.3 Practice of chin control88

Open Telecom, Inc.Open Telecom, Inc.

3.4 Practice of Vision sensors & GPS

99

Open Telecom, Inc.Open Telecom, Inc.

3.5 Practice of EMG signals from teeth

1010

Open Telecom, Inc.Open Telecom, Inc.

3.6 Comparison(Breath and EMG-teeth)

○ Practice of heavily handicapped people in

spinal cord (no.4 or no.5 of the cervical

vertebrae is damaged, and can’t use both

legs and hands). 10 people in tests.

○ Speed of powerchair : 0.4m / sec

○ Test : Passing test path, and checking the

time and driving suite errors

If the user is out of the path more than 3

times, don’t count in test results(2 people)

1111

Open Telecom, Inc.Open Telecom, Inc.

3.7 Test resultsTeeth-clenching control way had

22% less driving time and 56%

less driving error out of path

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Open Telecom, Inc.Open Telecom, Inc.

13134. Technology, patents & copyrights

1) Sensor, data acquisition wireless devices and programs

Integrated in headset kit

2) Mouse & keyboard control program using teeth-

clenching Can be loaded to notebook or special

control panel module for power wheelchair

3) Interface system between control panel module and

joystick controller Supplied as system set which can

be installed

4) Embedded OS based data acquisition & power

wheelchair control system Supplied as special

control panel module based on specific joystick

controller

Open Telecom, Inc.Open Telecom, Inc.

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4.1 EMG : ElectroMyoGram)

EMG is bio-electric signal generated by using muscles

- Measured with various noise. Stable differential signal.

- Easy to acquire from skin.

- Signal processing is easier than

eyeball-movement or brain waves

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4.2 EMG Data Acquisition

- Basic movement: Teeth-

clenching

- Easy-to-do

- Not easy to be exposed to

others

- Electrodes on temporalis

muscle

- Headband or cap types

design

Open Telecom, Inc.Open Telecom, Inc.

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4.3 EMG-Power Wheelchair

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4.4 Power Wheelchair Control- Basic movement : Left-teeth, right-teeth,

both-teeth

- Control when it is stopped

Left-teeth clenching : Left-turn slowly

Right-teeth clenching : Right-turn slowly

Both-teeth clenching twice : Switch from

forward

to backward, backward to

forward

Both-teeth clenching long(more than 2

seconds) :

Moving forward or backward

- Control when it is moving forward

Left-teeth clenching shortly : Left-turn

slowly

Right-teeth clenching shortly : Right-turn

slowly

Left-teeth clenching long(more than 2

seconds) :

Quick left-turn

Right-teeth clenching long(more than 2

seconds) :

Quick right-turn

Both-teeth clenching : Stop

Open Telecom, Inc.Open Telecom, Inc.

18185. EMG-Tetris game- practicing users

1) Wireless data transmission part

(Green LED)

2) EMG sensors (Left & right)

3) Ground part (Center)

4) EMG-Tetris program

5) Serial : Initiating the program

6) Load up : Test program selection

7) Start the program

1

2

5

6

7

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1) Left tooth clenching shortly : Move left

2) Right tooth clenching shortly : Move

right

3) Both teeth clenching shortly : Rotate

4) Both teeth clenching long(1 second) :

Drop

5) Left tooth clenching long(2 seconds) :

Restart

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6. Market

Control device makers

Power wheelchair & joystick controller makers

Potentials-Heavily hands & legs handicapped people : 30,000 in Korea, about 3 million people worldwide

-Auxiliary potable input devices with portability : Meets the need in era of ubiquitous

-Games without hand operation of keyboard or mouse

Open Telecom, Inc.Open Telecom, Inc.

2020

Open Telecom, Inc.Open Telecom, Inc.

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Thank you !