WO2015189863A3 - A compliant mechanism for refreshable braille display using shape memory alloy - Google Patents

A compliant mechanism for refreshable braille display using shape memory alloy Download PDF

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Publication number
WO2015189863A3
WO2015189863A3 PCT/IN2015/050043 IN2015050043W WO2015189863A3 WO 2015189863 A3 WO2015189863 A3 WO 2015189863A3 IN 2015050043 W IN2015050043 W IN 2015050043W WO 2015189863 A3 WO2015189863 A3 WO 2015189863A3
Authority
WO
WIPO (PCT)
Prior art keywords
braille character
shape memory
memory alloy
braille display
braille
Prior art date
Application number
PCT/IN2015/050043
Other languages
French (fr)
Other versions
WO2015189863A2 (en
Inventor
Ankit Kumar PARSURAMPURIA
Dhruv Gupta
Pulkit SAPRA
Parigi Vedanti Madhusudhan RAO
Meenakshi BALAKRISHNAN
Rohan PAUL
Original Assignee
Indian Institute Of Technology Delhi
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Indian Institute Of Technology Delhi filed Critical Indian Institute Of Technology Delhi
Publication of WO2015189863A2 publication Critical patent/WO2015189863A2/en
Publication of WO2015189863A3 publication Critical patent/WO2015189863A3/en

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Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B21/00—Teaching, or communicating with, the blind, deaf or mute
    • G09B21/001—Teaching or communicating with blind persons
    • G09B21/003—Teaching or communicating with blind persons using tactile presentation of the information, e.g. Braille displays
    • G09B21/004—Details of particular tactile cells, e.g. electro-mechanical or mechanical layout
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B21/00—Teaching, or communicating with, the blind, deaf or mute
    • G09B21/001—Teaching or communicating with blind persons
    • G09B21/003—Teaching or communicating with blind persons using tactile presentation of the information, e.g. Braille displays

Abstract

The present invention describes a refreshable braille display (RBD) device. The refreshable device comprises a plurality of braille character cells, actuation means, and one or more cantilever strips. Each of the braille character cell parted into five layers, comprises a latching means to lock a tactile element in 'up' position. The actuation means secured within each of the braille character cell, comprises one or more shape memory alloy (SMA) wires for raising the one or more tactile elements. Each of the cantilever strips positioned in between the five layers of the braille character cell, and fastened with the actuation means. In another embodiment a plurality of braille character cells, each of the braille character cell being parted into two half cells.
PCT/IN2015/050043 2014-06-10 2015-06-08 A compliant mechanism for refreshable braille display using shape memory alloy WO2015189863A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN1575/DEL/2014 2014-06-10
IN1575DE2014 2014-06-10

Publications (2)

Publication Number Publication Date
WO2015189863A2 WO2015189863A2 (en) 2015-12-17
WO2015189863A3 true WO2015189863A3 (en) 2016-03-31

Family

ID=54834517

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IN2015/050043 WO2015189863A2 (en) 2014-06-10 2015-06-08 A compliant mechanism for refreshable braille display using shape memory alloy

Country Status (1)

Country Link
WO (1) WO2015189863A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020215141A1 (en) * 2019-04-25 2020-10-29 Universidade Estadual De Campinas Braille cell and braille communication device including the cell
CN110631167B (en) * 2019-09-23 2024-03-01 珠海格力电器股份有限公司 Controller, electric control equipment and control method of controller

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7462034B1 (en) * 2004-01-30 2008-12-09 Freedom Scientific, Inc. Braille display assembly
US20110269106A1 (en) * 2010-04-30 2011-11-03 David Schroeder Actuation mechanism for braille displays
WO2013179311A1 (en) * 2012-05-31 2013-12-05 Indian Institute Of Technology, Delhi A system for generating refreshable tactile text and graphics

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7462034B1 (en) * 2004-01-30 2008-12-09 Freedom Scientific, Inc. Braille display assembly
US20110269106A1 (en) * 2010-04-30 2011-11-03 David Schroeder Actuation mechanism for braille displays
WO2013179311A1 (en) * 2012-05-31 2013-12-05 Indian Institute Of Technology, Delhi A system for generating refreshable tactile text and graphics

Also Published As

Publication number Publication date
WO2015189863A2 (en) 2015-12-17

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