Part-I - Controller General of Patents Designs and Trademarks

(12) PATENT APPLICATION PUBLICATION (21) Application No.2545/MUM/2010 A
(19) INDIA
(22) Date of filing of Application :15/09/2010 (43) Publication Date : 21/06/2013
(54) Title of the invention : REFRESHABLE BRAILLE DISPLAY USING STEPPER MOTORS
(51) International classification :G09B21/00
(31) Priority Document No :NA
(32) Priority Date :NA
(33) Name of priority country :NA
(86) International Application No
:NA
Filing Date
:NA
(87) International Publication No : NA
(61) Patent of Addition to Application Number :NA
Filing Date
:NA
(62) Divisional to Application Number
:NA
Filing Date
:NA
(71)Name of Applicant :
1)SHINDE SATYAJEET
Address of Applicant :C 4/12, AWCHS LTD., SALUNKE
VIHAR, WANWADI, PUNE-411 022, Maharashtra India
(72)Name of Inventor :
1)SHINDE SATYAJEET
(57) Abstract :
Refreshable Braille display using stepper motors enables visually impaired individuals to read digital textual information as
Braille at a very low cost. The mechanism consists of circular wheels 10 that have Braille characters pre-embossed on their rims
and the wheels themselves are mounted axially on individual stepper motors 8, whose rotation is controlled by a microcontroller
6. The digital textual information is input from a personal computer into the microcontroller 6. via USB port 4, which then
generates signals for the stepper motors such that the wheels rotate so as to position the desired Braille characters on the top-most
point of the wheel. Once all the ten wheels have been rotated and the ten characters are positioned at the top-most point of each of
the wheels, the user can slide his/her finger(s) across the display window 2 and read the text. Subsequent characters can be
displayed similarly.
No. of Pages : 10 No. of Claims : 2
The Patent Office Journal 21/06/2013 13600