BrailleRing: a flexible Braille display

2020 ◽  
Vol 6 (2) ◽  
Author(s):  
Michael Treml ◽  
Dominik Busse ◽  
Andreas Dünser ◽  
Mike Busboom ◽  
Wolfgang L. Zagler
Keyword(s):  
Line Length ◽  
Blind People ◽  
Braille Display ◽  
Piezo Electric

AbstractThe “BrailleRing” is a refreshable Braille display that allows blind people to read tactile characters on the inside of a rotating ring. Dots are not displayed by moving pins, but by fixed patterns on rotating cuboids. The concept allows for a flexible line-length as well as for a more robust and easy-to-clean device, because it needs far fewer actuators than piezo-electric Braille displays, and these actuators are mechanically isolated from the Braille cells.

scholarly journals An Architecture Improvement of Electronic Braille Quran Based on Raspberry Pi

2019 ◽  
Vol 8 (11S2) ◽  
pp. 395-399
Keyword(s):  
Visually Impaired ◽  
The Other ◽  
Raspberry Pi ◽  
Blind People ◽  
Input And Output ◽  
University Of Technology ◽  
Start Up ◽  
Battery Consumption ◽  
Braille Display ◽  
Tolerable Level

An electronic braille (eBraille) Quran is a braille display that is use to aid the visually impaired and blind Muslims in their journey of understanding and appreciating the Quran in a much more convenient way. It is an invention of University of Technology Malaysia (UTM) since 2009 for the blind people to recite Quran through the Braille system. However, current architecture of eBraille Quran comprises of too many modular components, numerous microcontrollers and complexly designed. Another vital issue is that its architecture still uses old technologies where the firmware updating or data correction process cannot be done remotely. This makes it hard to maintain, repair, costly and time consuming. This study proposed an enhancement of current architecture with the latest technology of single board computer named Raspberry Pi 3B+. The architecture is first designed according to the existing features of the eBraille Quran. Then, a prototype circuit is developed and fabricated for testing purposes of the proposed architecture. Once the circuit is fabricated, an experiment is conducted to test on how well the new architecture manages the intended functionalities, controlling input and output of braille cells, the performance of start-up time and battery consumption. The result shows that the proposed architecture using Raspberry Pi manages to carry out all the proposed functionalities of eBraille Quran. The start-up time is also within tolerable level with only 1 second slower than the current architecture. Battery consumption on the other hand shows that using Raspberry Pi reduces the battery consumption by 1.2% per hour.

Prototype Development of Image Editing Systems Available for Visually Impaired People and Consideration of Their User Interfaces

2016 ◽  
Vol 20 (6) ◽  
pp. 961-967 ◽  
Author(s):  
Noboru Takagi ◽  
◽  
Shingo Morii ◽  
Tatsuo Motoyoshi ◽  
Keyword(s):  
User Interfaces ◽  
Visual Information ◽  
Blind People ◽  
Line Drawings ◽  
Prototype Development ◽  
Visually Impaired People ◽  
Sufficient Detail ◽  
The Matrix ◽  
Braille Display ◽  
Tactile Graphics

For example, when sighted scholars study mathematics and physics etcetera, they need to access visual information, e.g., graphs and pictures. Furthermore, sighted people can express their own ideas and opinions visually. On the other hand, blind people can access visual information if it is expressed tactilely, but find it difficult to express their ideas and opinions visually. We are therefore developing a computer-aided system enabling blind people to draw their own figures on their own. This system consists of a matrix braille display to edit computer line drawings. The matrix braille display enables the blind to feel a tactile graphic during editing. After explaining two input methods for elementary plane shapes, we discuss two methods for scrolling tactile graphics to make the matrix braille display large enough to show tactile graphics in sufficient detail. We then show experimental results for using input and scrolling, and conclude with discussion on the usability of input and scrolling.

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.

A Device for Magnification Measurement

1972 ◽  
Vol 30 ◽  
pp. 622-623
Author(s):  
J.A. Eades ◽  
A. van Dun
Keyword(s):  
Electron Microscope ◽  
Small Displacement ◽  
Private Communication ◽  
Piezoelectric Crystal ◽  
Double Exposure ◽  
Standard Methods ◽  
Elegant Method ◽  
The Right ◽  
Piezo Electric

The measurement of magnification in the electron microscope is always troublesome especially when a goniometer stage is in use, since there can be wide variations from calibrated values. One elegant method (L.M.Brown, private communication) of avoiding the difficulties of standard methods would be to fit a device which displaces the specimen a small but known distance and recording the displacement by a double exposure. Such a device would obviate the need for changing the specimen and guarantee that the magnification was measured under precisely the conditions used.Such a small displacement could be produced by any suitable transducer mounted in one of the specimen translation mechanisms. In the present case a piezoelectric crystal was used. Modern synthetic piezo electric ceramics readily give reproducible displacements in the right range for quite modest voltages (for example: Joyce and Wilson, 1969).

Top-Down Processing and Visual Reorientation Illusions in a Virtual Reality Environment

2004 ◽  
Vol 63 (3) ◽  
pp. 143-149 ◽  
Author(s):  
Fred W. Mast ◽  
Charles M. Oman
Keyword(s):  
Virtual Reality ◽  
Visual Processing ◽  
Line Length ◽  
Perceptual Cues ◽  
Virtual Reality Environment ◽  
Top Down ◽  
Test Conditions ◽  
The Subject ◽  
Processing Mechanisms

The role of top-down processing on the horizontal-vertical line length illusion was examined by means of an ambiguous room with dual visual verticals. In one of the test conditions, the subjects were cued to one of the two verticals and were instructed to cognitively reassign the apparent vertical to the cued orientation. When they have mentally adjusted their perception, two lines in a plus sign configuration appeared and the subjects had to evaluate which line was longer. The results showed that the line length appeared longer when it was aligned with the direction of the vertical currently perceived by the subject. This study provides a demonstration that top-down processing influences lower level visual processing mechanisms. In another test condition, the subjects had all perceptual cues available and the influence was even stronger.

Centroid Extraction as a Process in Judgments of Line Length

2008 ◽  
Author(s):  
Clare K. Porac ◽  
Alan Searleman ◽  
Alicia Dunbar
Keyword(s):  
Line Length

The contribution of technologies to the inclusion of the student whit a visual disability: the "smart stick for blind people"

2018 ◽  
Author(s):  
Michele Aurelio ◽  
Stefania Cecchi ◽  
Mirca Montanari ◽  
Andrea Primavera
Keyword(s):  
Collaborative Teaching ◽  
Training Needs ◽  
Blind People ◽  
Visual Disability ◽  
Innovative Teaching ◽  
Digital Education ◽  
Design And Construction

Taking into consideration the complexity of the new, heterogeneous, and different training needs currently present in the classrooms, the school is called to respond them in an effective and concrete way through inclusive educational approaches centered on the students, none excluded. On this basis, the authors, supporting the importance of technology in innovative teaching, propose the design and construction of an intelligent white stick through an inclusive cooperative methodology. The presented device, presented in this paper, is inspired by an open and collaborative teaching, enhancing a responsible digital education, accepting the training needs of all the students present in the classroom, specifically the blind student, and the recognition of the diversity in view of the reduction of disability.

Petunjuk Waktu Untuk Tuna Netra Dengan Output Suara

2019 ◽  
Vol 10 (02) ◽  
pp. 1-7
Author(s):  
Aan Febriansyah ◽  
Muslim Fathillah ◽  
Nurdin Nurdin
Keyword(s):  
Special Needs ◽  
Blind People ◽  
Storage Unit ◽  
Level Indicator ◽  
Normal People ◽  
The Voice ◽  
Time Information ◽  
Voice Output

Nowaday time indicator as hour and calendar constitutes necessary for thing a lot of person to trip routines. In general, the clock and the calendar can only be seen by normal people. People with special needs, its example is blind will have difficulty in using the clock and the calendar Get bearing with that problem, therefore to help that blind is designed and made by time indicator tool with voice output. Generally, the tool's instructions when using RTC DS1307, is microcontroller ATmega16 and ISD 25 120. Information about hour, minute, date, month, and year obtained from DS1307 RTC is accessed using microcontroller ATmega16, then from the data when the information obtained is matched in the voice storage unit on ISD25120. As a results,will be obtained time information data such as voice. Besides, time setting, alarm, battery level indicator, and charge the battery with the sound as well is the tool is equipped permanently. Finally, this tool can help the blind people to be more independent in making it easier to tell the time in living day-to-day activities.

Touching Blind Bodies: A Critical Inquiry into Pedagogical and Cultural Constructions of Visual Disability in the Nineteenth Century

2018 ◽  
Author(s):  
Heather Tilley ◽  
Jan Eric Olsén
Keyword(s):  
Nineteenth Century ◽  
Visually Impaired ◽  
Blind People ◽  
Embodied Experience ◽  
Visual Disability ◽  
Visually Impaired People ◽  
Educational Challenges ◽  
Impaired People ◽  
The Senses ◽  
Cultural Constructions

Changing ideas on the nature of and relationship between the senses in nineteenth-century Europe constructed blindness as a disability in often complex ways. The loss or absence of sight was disabling in this period, given vision’s celebrated status, and visually impaired people faced particular social and educational challenges as well as cultural stereotyping as poor, pitiable and intellectually impaired. However, the experience of blind people also came to challenge received ideas that the visual was the privileged mode of accessing information about the world, and contributed to an increasingly complex understanding of the tactile sense. In this chapter, we consider how changing theories of the senses helped shape competing narratives of identity for visually impaired people in the nineteenth century, opening up new possibilities for the embodied experience of blind people by impressing their sensory ability, rather than lack thereof. We focus on a theme that held particular social and cultural interest in nineteenth-century accounts of blindness: travel and geography.

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