Tactile display as a braille display for the visually disabled

2005 ◽  
Author(s):  
H.R. Choi ◽  
S.W. Lee ◽  
K.M. Jung ◽  
J.C. Koo ◽  
S.I. Lee ◽  
...  
Keyword(s):  
Tactile Display ◽  
Visually Disabled ◽  
Braille Display

Design Exploration of Affordable Refreshable Braille Display Technology for Low-Income Visually Impaired Users

2017 ◽  
Author(s):  
Anthony S. Walker ◽  
Shraddha Sangelkar
Keyword(s):  
Developing Countries ◽  
Low Income ◽  
Visually Impaired ◽  
Developed Countries ◽  
Tactile Display ◽  
Influential Factor ◽  
High Price ◽  
Digital Information ◽  
The Cost ◽  
Braille Display

People with visual disability need assistance in reading and writing by converting text to braille. Braille allows tactile display of the information for the visually impaired. Refreshable braille displays are commonly available in developed countries for a high price with the number of cells the display contains being the most influential factor on that price. Low-income blind individuals from developing countries cannot afford an expensive refreshable braille display, which in turn limits their access to digital information. The purpose to this paper is to explore design options for reducing the cost of refreshable braille displays. The paper begins with a summary of currently available refreshable braille displays on the market and their features. Next, the design requirements are explored for developing a low-cost device for visually impaired users in the developing countries. The paper also explains the state-of-the-art technologies for actuating the braille dots that may reduce the cost of the device. Finally, the recommendations for reducing the cost of these displays are presented.

A Braille Display System for the Visually Disabled Using a Polymer Based Soft Actuator

2009 ◽  
pp. 427-442 ◽  
Author(s):  
Hyouk Ryeol Choi ◽  
Ig Mo Koo ◽  
Kwangmok Jung ◽  
Se-Gon Roh ◽  
Ja Choon Koo ◽  
...  
Keyword(s):  
Display System ◽  
Soft Actuator ◽  
Visually Disabled ◽  
Braille Display

A NEW BRAILLE DISPLAY SYSTEM DESIGN USING A POLYMER-BASED SOFT ACTUATOR TACTILE DISPLAY

2008 ◽  
pp. 239-248
Author(s):  
Ja Choon Koo ◽  
Hyouk Ryeol Choi ◽  
Kwangmok Jung ◽  
Jae-do Nam ◽  
Young kwan Lee ◽  
...  
Keyword(s):  
System Design ◽  
Tactile Display ◽  
Display System ◽  
Soft Actuator ◽  
Braille Display

scholarly journals Toward Low-Cost Highly Portable Tactile Displays with Shape Memory Alloys

2007 ◽  
Vol 4 (2) ◽  
pp. 57-70 ◽  
Author(s):  
R. Velázquez ◽  
E. E. Pissaloux ◽  
M. Hafez ◽  
J. Szewczyk
Keyword(s):  
Shape Memory ◽  
Active Element ◽  
Low Cost ◽  
Tactile Display ◽  
Helical Springs ◽  
Niti Sma ◽  
Air Convection ◽  
Tactile Displays ◽  
Forced Air ◽  
Visually Disabled

This paper presents a new concept of low-cost, high-resolution, lightweight, compact and highly portable tactile display. The prototype consists of an array of 8 × 8 upward/downward independent moveable pins based on shape memory alloy (SMA) technology. Each tactile actuator consists of an antagonist arranged pair of miniature NiTi SMA helical springs capable of developing a 300 mN pull force at 1.5 Hz bandwidth by using simple forced-air convection. The proposed concept allows the development of 200 g weight tactile instruments of compact dimensions which can be easily carried by a visually disabled user. A detailed technical description of the SMA active element, tactile actuator and tactile display is presented and discussed. Preliminary perceptual results confirm the effectiveness of the display on information transmission.

On the Formulation and Functioning of a Micro Haptics Actuator Based Unit Braille Display Cell

2020 ◽  
Vol 12 (3) ◽  
pp. 209-216
Author(s):  
Moumita Ghosh ◽  
Subham Ghosh ◽  
Manish Mukhopadhyay ◽  
Biswarup Neogi
Keyword(s):  
Tactile Display ◽  
Blind People ◽  
Soft Data ◽  
Display Board ◽  
Display Unit ◽  
Working Principle ◽  
Linear Actuators ◽  
Braille Display ◽  
Conventional Computer ◽  
Language Text

: The article focusses on the working principle of devising a display board and introduction to a working model of a single unit of a novel prototype of a computer display board for blind people. Objective: The developed prototype is aimed at converting a conventional computer screen to a braille screen based tactile display board. The arrangement will enable the blind people to accesses soft data as a converted braille language text. In addition, the position of the write-up will also be recognizable by the blind. Methods: The system employs six number of micro linear actuators providing haptics feedback. Results: The ABCD display unit was tested with the blind and was found to be received well by the community. According to the survey, this raised dot mechanism is very effective for blind communication.

Design of Braille Display System Based on Piezoelectric Actuator Array

2012 ◽  
Vol 201-202 ◽  
pp. 625-629
Author(s):  
Xiao Liang ◽  
Guo Ping Li ◽  
Zhi Ming Xu
Keyword(s):  
Piezoelectric Actuator ◽  
Word Segmentation ◽  
Tactile Display ◽  
Chinese Characters ◽  
Display Device ◽  
Display System ◽  
To Receive ◽  
Braille Display

According to the situation that conditional Braille book is difficulty in publication and its amount is small. This paper puts forward a tactile display system which can transform content of common e-book to Braille information, and the blind comprehend the text by touching the Braille formed by the tactile display device. This Braille tactile display system extracts Chinese characters by OCR technology. The text recognized is segmented into word blocks according to the rule of Braille word segmentation before transforming to double-phoneme mandarin Braille. It uses dsPIC30F2010 to receive Braille signal and then controls the piezoelectric actuator array to output corresponding displacement.

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